CN103286286B - The continuous casting apparatus that the mo(u)lding of magnesium or magnesium alloy composition is cast continuously and continuous casing - Google Patents

The continuous casting apparatus that the mo(u)lding of magnesium or magnesium alloy composition is cast continuously and continuous casing Download PDF

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Publication number
CN103286286B
CN103286286B CN201310055489.8A CN201310055489A CN103286286B CN 103286286 B CN103286286 B CN 103286286B CN 201310055489 A CN201310055489 A CN 201310055489A CN 103286286 B CN103286286 B CN 103286286B
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Prior art keywords
bakie
continuous casting
motlten metal
casting mold
holding furnace
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CN201310055489.8A
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CN103286286A (en
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浅川亮史
蛭川谦
蛭川谦一
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Kobe Steel Ltd
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Kobe Steel Ltd
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Priority claimed from JP2012036727A external-priority patent/JP5855972B2/en
Priority claimed from JP2012036728A external-priority patent/JP5859874B2/en
Priority claimed from JP2012036726A external-priority patent/JP5798945B2/en
Priority claimed from JP2012036729A external-priority patent/JP5789540B2/en
Priority claimed from JP2012036730A external-priority patent/JP5830410B2/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of CN103286286A publication Critical patent/CN103286286A/en
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Abstract

The present invention provides continuous casting apparatus and the continuous casing of a kind of casting continuously that can stably carry out magnesium alloy.Continuous casting apparatus possesses: the holding furnace keeping the motlten metal of magnesium or magnesium alloy；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.

Description

The continuous casting apparatus that the mo(u)lding of magnesium or magnesium alloy composition is cast continuously and continuous casing
Technical field
Continuous casting apparatus that the mo(u)lding that the present invention relates to constitute magnesium or magnesium alloy (following, to they are referred to " magnesium alloy ") casts continuously and continuous casing.
Background technology
In the past, in the continuous casting apparatus of magnesium alloy, such as shown in patent documentation 1, the motlten metal of magnesium alloy is supplied to continuous casting mold via bakie from holding furnace, solidifying through once cooling, cooling twice based on direct water-cooling of based on continuous casting mold, the extending direction along continuous casting mold carries out drawing and is formed as mo(u)lding.This continuous casting apparatus generally can be categorized as horizontal (horizontal type) continuous casting apparatus shown in vertical (vertical-type) continuous casting apparatus and patent documentation 1.
[citation]
[patent documentation]
[patent documentation 1] Japanese Unexamined Patent Publication 2005-296975 publication
But, the continuous casting apparatus proposed in patent documentation 1 cannot stably carry out the continuous casting of magnesium alloy due to a variety of causes.
Summary of the invention
The present invention makes in view of above-mentioned point, it is provided that the continuous casting apparatus of a kind of casting continuously that can stably carry out magnesium alloy and continuous casing.
In order to solve described problem, the continuous casting apparatus of first aspect present invention possesses: holding furnace, and the motlten metal of magnesium or magnesium alloy is kept by it；Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Heater, described bakie is heated by it；Described continuous casting mold, it is connected with described bakie；Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing, and described continuous casting apparatus is characterised by having: laser detector, it is arranged on the top of described bakie, and measures the motlten metal face height of motlten metal in this bakie；Bakie cover plate, the peristome on the top of its inaccessible described bakie, and have make the laser light launched from described laser detector laser light mechanism and can be to the visuognosis mechanism carrying out visuognosis in described bakie, described heater has: wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface, and described wall portion has: side of sidewall portion, and it is U-shaped under being formed as overlooking, and houses described bakie in inside；Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie, and, there is the bottom wall part resettlement section housing described bottom wall part in the bottom of described bakie, by enable the forwards movement of described bakie make described bakie and described wall part from.
The continuous casting apparatus possessing this structure can carry out employing the mensuration of the motlten metal face height of the motlten metal in the bakie of laser detector by the laser light mechanism of bakie cover plate.And, molten metal surface can be easily verified that by the visuognosis mechanism of bakie cover plate.
It addition, the continuous casting apparatus of second aspect present invention is characterised by, the heat resistant glass plate formed by heat resistant glass that partially or fully uses at described bakie cover plate is used as described laser light mechanism and described visuognosis mechanism.
Possess in the continuous casting apparatus of this structure, owing to heat resistant glass plate makes laser light, therefore bakie cover plate partly or wholly can make laser light.That is, bakie cover plate partly or wholly become laser light mechanism such that it is able to measure motlten metal face height.Being additionally, since heat resistant glass plate transparent, therefore bakie cover plate partly or wholly has visibility.That is, bakie cover plate partly or wholly become visuognosis mechanism such that it is able to confirm the situation of motlten metal in bakie.
It addition, the continuous casting apparatus of third aspect present invention is characterised by, described laser detector is set in the position leaving more than 500mm from the motlten metal face of described motlten metal.The continuous casting apparatus possessing this structure is prevented from the situation that laser detector breaks down because of heat.
In order to solve described problem, the continuous casing of fourth aspect present invention uses any of the above-described kind of continuous casting apparatus flatly to pull out magnesium or the mo(u)lding of magnesium alloy and cast, it is characterized in that, including: utilize described laser detector via the laser determination step of the motlten metal face height of described bakie cover plate mensuration motlten metal；According to the motlten metal face height measured in described laser determination step, regulate the quantity delivered regulating step of the quantity delivered of the described motlten metal supplied from described holding furnace, in described quantity delivered regulating step, when a diameter of more than 85mm of the described mo(u)lding pulled out from described continuous casting mold, described quantity delivered is regulated in the way of the described motlten metal face height that measured by the described laser detector centrage away from described continuous casting mold becomes more than 350mm, when the diameter of the described mo(u)lding pulled out from described continuous casting mold is less than 85mm, described quantity delivered is regulated in the way of the described motlten metal face height that measured by the described laser detector centrage away from described continuous casting mold becomes more than 300mm.
The continuous casing carrying out this operation monitors motlten metal face height in laser determination step, can suitably keep the quantity delivered of motlten metal according to the diameter of mo(u)lding.Therefore, it is possible to the pressure of motlten metal is remained more than certain such that it is able to the stably continuous cast divine force that created the universe.It is additionally, since use bakie cover plate, therefore, it is possible to confirm the situation of molten metal surface.
In order to solve described problem, the continuous casting apparatus of fifth aspect present invention possesses: holding furnace, and the motlten metal of magnesium or magnesium alloy is kept by it；Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Heater, described bakie is heated by it；Described continuous casting mold, it is connected with described bakie；The conveying roller mo(u)lding to sending from described continuous casting mold is utilized to carry out the draw-off gear of drawing, described continuous casting apparatus is characterised by, described feeding molten metal pipe possesses: for motlten metal pipe portion, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Holding section, it is located at described for motlten metal pipe portion and make this confession motlten metal pipe portion engage with described holding furnace, and described confession motlten metal pipe portion has: hangs down in described holding furnace and accepts the base end part of the described motlten metal sent by pressue device；The rake making described motlten metal move continuously with described base end part via the first bending part；Continuously and hang down in described bakie with described rake via the second bending part and spray the leading section of described motlten metal, described rake is inclined to rise towards described second bending part side from described first bending part side, its angle of inclination is with respect to the horizontal plane 1～10 degree, described holding section has lip portions, this lip portions is arranged on described base end part, and dismount freely relative to the snap fastener being arranged on the holding furnace cover plate that the peristome of described holding furnace is covered, described heater has: wall portion, its side being arranged in described bakie and lower section, and it is opposed with the side of described bakie and bottom surface；Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface, and described wall portion has: side of sidewall portion, and it is U-shaped under being formed as overlooking, and houses described bakie in inside；Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie, and, there is the bottom wall part resettlement section housing described bottom wall part in the bottom of described bakie, by enable the forwards movement of described bakie make described bakie and described wall part from.
Possesses the continuous casting apparatus of this structure by making the inclination for motlten metal pipe portion with more than 1 degree, and at the end of feeding molten metal, the motlten metal of the second bending part is promptly discharged to the first bending part side, thus without there is the situation that motlten metal drips because of the gravity of motlten metal from the second bending part, the motlten metal deficiency of the second bending part takes a turn for the better.The casting fault caused as a result of which it is, dripped by the motlten metal from the second bending part disappears, and, even if in the cleaning carried out after feeding molten metal terminates, the cleaning for motlten metal pipe portion is also easy, and therefore the cleaning of feeding molten metal pipe improves.And, even if in the starting stage of feeding molten metal, motlten metal also moves in zooming mode in for motlten metal pipe portion, and the situation that motlten metal drips from the second bending part because of the gravity of motlten metal will not occur.As a result of which it is, prevent the disorder of the liquid level of the motlten metal in bakie, and prevent inactive gas being involved in motlten metal, improve casting property.
Additionally, in continuous casting apparatus, by the inclination making rake have less than 10 degree, and make the contraction in length of leading section, the Distance Shortened that drips that motlten metal drips from the second bending part, the most especially in the starting stage of feeding molten metal, it is possible to prevents the disorder of the liquid level of motlten metal in bakie, and it being prevented from inactive gas being involved in motlten metal, casting property improves.
In addition, in continuous casting apparatus, the holding section i.e. lip portions supplying motlten metal pipe portion to engage with holding furnace snap fastener on the holding furnace cover plate being arranged on holding furnace is made to dismount freely, thus, after feeding molten metal terminates, at short notice feeding molten metal pipe can be dismantled from holding furnace, suppress into Min. therefore, it is possible to the temperature for the motlten metal in motlten metal pipe portion declined.As a result of which it is, in the generation amount of motlten metal solidfied material few stage, it is possible to cleaning for motlten metal pipe portion, therefore the cleaning of feeding molten metal pipe improves.
And, continuous casting apparatus is by using described feeding molten metal pipe, and at the end of feeding molten metal, the casting fault that making drips from the motlten metal of feeding molten metal pipe causes disappears, even and if in the cleaning carried out after feeding molten metal terminates, the cleaning of feeding molten metal pipe is also easy, and therefore the cleaning of continuous casting apparatus improves.And, even if in the starting stage of feeding molten metal, it is also possible to prevent the disorder of the liquid level of motlten metal in bakie, and be prevented from inactive gas being involved in motlten metal, improve casting property.
It addition, the continuous casting apparatus of sixth aspect present invention is characterised by, described pressue device is the pump possessing motlten metal stream, possesses the insertion section sending mouth inserting described motlten metal stream in the way of dismounting freely in the end of described base end part.
Possesses the continuous casting apparatus of this structure by possessing insertion section, thus after feeding molten metal terminates, can will dismantle from pump for motlten metal pipe portion at short notice, suppress into Min. therefore, it is possible to the temperature for the motlten metal in motlten metal pipe portion declined.As a result of which it is, in the generation amount of motlten metal solidfied material few stage, it is possible to cleaning for motlten metal pipe portion, therefore the cleaning of feeding molten metal pipe improves further.
It addition, the continuous casting apparatus of seventh aspect present invention is characterised by, at least one of surrounding on the length direction in described confession motlten metal pipe portion is covered by heater.
Possesses the continuous casting apparatus of this structure by covering by heater for motlten metal pipe portion, and the temperature for the motlten metal in motlten metal pipe portion can be declined and suppress into Min., therefore in feeding molten metal, motlten metal solidfied material will not be produced, it is possible to prevent the motlten metal blocking that motlten metal solidfied material causes in for motlten metal pipe portion.
Additionally, the continuous casting apparatus of eighth aspect present invention is characterised by, described confession motlten metal pipe portion is made up of the pipe being formed continuously between described base end part, described first bending part, described rake, described second bending part and this each several part of described leading section.
Possess the continuous casting apparatus of this structure by being made up of a pipe for motlten metal pipe portion, connect between by each portion for motlten metal pipe portion, produce gap etc. thus without due to the bad connection between each portion.As a result of which it is, in feeding molten metal, it is possible to prevent motlten metal from the situation of the leakages such as the gap for motlten metal pipe portion.
It addition, continuous casting apparatus will be by being made up of a pipe for motlten metal pipe portion, from without producing difference of height due to the bad connection between each portion.This difference of height easily accumulates motlten metal, easily produces motlten metal solidfied material.But, in the present application, owing to there is no difference of height for motlten metal pipe portion, therefore in for motlten metal pipe portion, it is not likely to produce motlten metal solidfied material, it is possible to prevent the motlten metal blocking that motlten metal solidfied material causes further.
It addition, the continuous casting apparatus of ninth aspect present invention is characterised by, at least one party in described described first bending part for motlten metal pipe portion and described second bending part is formed as arc-shaped.
Possess the continuous casting apparatus of this structure by least one party in the first bending part and the second bending part being formed as arc-shaped, thus motlten metal is difficult to lodge in the first bending part and the second bending part, it is possible to the generation of suppression motlten metal solidfied material.As a result of which it is, the motlten metal blocking that motlten metal solidfied material causes can be prevented further.And, be formed as the first bending part of arc-shaped and insertion that the second bending part can make brush in pipe etc. clean fixture is easily carried out.
In order to solve described problem, the continuous casting apparatus of tenth aspect present invention possesses: holding furnace, and the motlten metal of magnesium or magnesium alloy is kept by it；Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Heater, described bakie is heated by it；Described continuous casting mold, it is connected with described bakie；Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing, and described continuous casting apparatus is characterised by, described heater has: wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface, and described wall portion has: side of sidewall portion, and it is U-shaped under being formed as overlooking, and houses described bakie in inside；Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie, and, there is the bottom wall part resettlement section housing described bottom wall part in the bottom of described bakie, by enable the forwards movement of described bakie make described bakie and described wall part from.
The side of bakie and/or bottom surface can be heated by the continuous casting apparatus possessing this structure, it is possible to maintain the temperature of the motlten metal lodging in bakie.Therefore, it is possible to use the bakie of the non-built-in electric heater in side or bottom surface.
It addition, heater can make the wall portion supporting electric heater separate with bakie, when washing bakie, it is possible to make bakie separate from heater and only bakie be washed.
It addition, the continuous casting apparatus of the present invention the 11st aspect is characterised by, the described wall portion of heater has groove portion on the face opposed with the side and/or bottom surface of described bakie, and described electric heater is arranged in described groove portion.
Possessing the continuous casting apparatus of this structure owing to arranging electric heater in the groove portion in wall portion, therefore when installing to bakie, electric heater will not contact with bakie.
Additionally, the continuous casting apparatus of the twelfth aspect of the present invention is characterised by, being also equipped with heater control portion, this heater control portion controls by the heating-up temperature of described heating devices heat to accumulate in the way of the motlten metal in described bakie becomes design temperature.
Possess the continuous casting apparatus of this structure and possess the side to bakie or bottom surface is heated and is able to maintain that the heater of temperature of the motlten metal lodging in bakie, therefore can use the bakie of non-built-in electric heater.And, bakie can separate with heater, it is possible to is separated from heater by bakie and only washes bakie.
It addition, the continuous casting apparatus of the present invention the 13rd aspect is characterised by, described heater control portion possesses: molten metal temperature determination part, and it measures the temperature of the motlten metal accumulated in described bakie, and exports motlten metal mensuration temperature information；Storage part, its storage accumulates in the design temperature i.e. motlten metal design temperature information of the motlten metal in described bakie；Monitoring unit, it monitors that described motlten metal measures the motlten metal of temperature information and measures the motlten metal design temperature whether temperature is the described motlten metal design temperature information being stored in described storage part, and exports monitoring result；Configuration part, it is according to described monitoring result, sets the heating-up temperature of described electric heater in the way of the motlten metal design temperature of the described motlten metal design temperature information making the temperature accumulating in the motlten metal in described bakie become to be stored in described storage part.
The continuous casting apparatus possessing this structure monitors the temperature of motlten metal by monitoring unit, and configuration part sets the heating-up temperature of electric heater according to monitoring result.Therefore, it is possible to the motlten metal lodging in bakie is maintained into design temperature.
In order to solve described problem, the continuous casing of fourteenth aspect of the present invention uses above-mentioned continuous casting apparatus to manufacture the mo(u)lding of magnesium alloy, it is characterized in that, described molten metal temperature determination part is utilized to measure the temperature of the motlten metal accumulated in described bakie, described motlten metal measures whether temperature is the described motlten metal design temperature being stored in described storage part to utilize described monitoring unit to monitor, utilize described configuration part according to the described monitoring result of described monitoring unit, the heating-up temperature of described electric heater is set in the way of the motlten metal design temperature of the described motlten metal design temperature information making the temperature accumulating in the motlten metal in described bakie become to be stored in described storage part.
The continuous casing carrying out this operation monitors the temperature of motlten metal by monitoring unit, and is set the heating-up temperature of electric heater according to monitoring result by configuration part.Therefore, it is possible to the motlten metal lodging in bakie is maintained into design temperature.
In order to solve described problem, the continuous casting apparatus of the fifteenth aspect of the present invention possesses: holding furnace, and the motlten metal of magnesium or magnesium alloy is kept by it；Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Heater, described bakie is heated by it；Described continuous casting mold, it is connected with described bakie；Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing, described continuous casting apparatus is characterised by, the part at least connected with described mo(u)lding in described continuous casting mold is made up of the material that the pyroconductivity at 20 DEG C is 10～150W/m K, described heater has: wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface, and described wall portion has: side of sidewall portion, and it is U-shaped under being formed as overlooking, and houses described bakie in inside；Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie, and, there is the bottom wall part resettlement section housing described bottom wall part in the bottom of described bakie, by enable the forwards movement of described bakie make described bakie and described wall part from.
Possesses the continuous casting apparatus of this structure by the material that pyroconductivity is 10～150W/m K at using 20 DEG C in the part connected with mo(u)lding of continuous casting mold such that it is able to suitably the mo(u)lding being made up of magnesium alloy is cooled down.Specifically, it is made up of the material of the pyroconductivity (20 DEG C) of below 150W/m K by the part connected with mo(u)lding making continuous casting mold such that it is able to prevent and the formation of the concaveconvex shape on mo(u)lding quick refrigeration mo(u)lding surface together.I.e., it is possible to produce the mo(u)lding with good surface configuration.
On the other hand, it is made up of the material of the pyroconductivity (20 DEG C) of more than 10W/m K by the part connected with mo(u)lding making continuous casting mold such that it is able to avoid the decline (decline of productivity ratio) of the casting speed caused with the most time-consuming situation of cooling of mo(u)lding.And, it is made up of the material of the pyroconductivity (20 DEG C) of more than 10W/m K by the part connected with mo(u)lding making continuous casting mold such that it is able to avoid chapping of the surface produced because the desuperheating during solidification of mo(u)lding is insufficient.
It addition, continuous casting apparatus is owing to possessing described continuous casting mold, and the mo(u)lding with good surface configuration can be produced.It is additionally, since and possesses described continuous casting mold such that it is able to guarantee sufficient productivity ratio.
It addition, the continuous casting apparatus of the present invention the 16th aspect is characterised by, the part at least connected with described mo(u)lding in described continuous casting mold is made up of the material that the pyroconductivity at 20 DEG C is 100～150W/m K.
The continuous casting apparatus possessing this structure is made up of the material of the pyroconductivity (20 DEG C) of more than 100W/m K the part connected with mo(u)lding making continuous casting mold, and can promptly mo(u)lding be cooled down, therefore, it is possible to raising casting speed such that it is able to guarantee sufficient productivity ratio.That is, according to this continuous casting mold, it is possible to realize both formedness and the productivity ratio of the surface configuration of the mo(u)lding of manufacture.
In order to solve described problem, the continuous casting apparatus of the present invention the 17th aspect possesses: possess: holding furnace, and the motlten metal of magnesium or magnesium alloy is kept by it；Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；Heater, described bakie is heated by it；Described continuous casting mold, it is connected with described bakie；Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing, described continuous casting apparatus is characterised by, described continuous casting apparatus possesses fixed plate, this fixed plate connects the joint face configuration of described continuous casting mold in the face of described bakie, and engage with described continuous casting mold and be fixed on described draw-off gear, described heater has: wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface, and described wall portion has: side of sidewall portion, and it is U-shaped under being formed as overlooking, and houses described bakie in inside；Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie, and, there is the bottom wall part resettlement section housing described bottom wall part in the bottom of described bakie, by enable the forwards movement of described bakie make described bakie and described wall part from.
The continuous casting apparatus possessing this structure is engaged by the fixed plate making continuous casting mold be locked to draw-off gear, and can be fixed relative to draw-off gear by continuous casting mold.Thus, continuous casting mold is fixed on draw-off gear by continuous casting apparatus via fixed plate, therefore when by draw-off gear drawing mo(u)lding apply power to draw-off gear side disperse, it is possible to prevent continuous casting mold tilt and mo(u)lding with situation about being drawn in the acclivitous state of above-below direction or right and left.
It addition, the continuous casting apparatus of the present invention the 18th aspect is characterised by, described draw-off gear possesses: correct frame post and left frame trestle, and they are arranged on the both sides of the described continuous casting mold being connected with described bakie away from each other；Right scaffold and left scaffold, they are respectively arranged on described correct frame post and described left frame trestle, and extend along horizontal direction；Multiple described conveying rollers, they drawing direction along described mo(u)lding between described right scaffold and described left scaffold leave setting；Board stop, it is respectively provided with on described right scaffold and described left scaffold, and engage described fixed plate between described right scaffold and described left scaffold, described fixed plate is formed with the through hole corresponding with the external diameter of described continuous casting mold, it is embedded in described continuous casting mold at this through hole, and the two ends of this fixed plate have been locked to described board stop.
The continuous casting apparatus possessing this structure engages fixed plate in the board stop be located at draw-off gear, and embeds continuous casting mold to the through hole of this fixed plate such that it is able to firmly fixed relative to draw-off gear by this continuous casting mold.
It addition, the continuous casting apparatus of the present invention the 19th aspect is characterised by, it is U-shaped that described board stop is formed as cross section, and described fixed plate is locked to described board stop with the state that two ends are held.
Possess the continuous casting apparatus of this structure by board stop being formed as cross section U-shaped, and can easily fixed disassembly plate.
Additionally, the continuous casting apparatus of the present invention the 20th aspect is characterised by, described bakie possesses the jut prominent to described fixed plate side, described fixed plate is fastened by described jut and retention mechanism, described continuous casting mold embeds described through hole, and is fastened by described fixed plate and retention mechanism.
Fixed plate is fastened by the continuous casting apparatus possessing this structure with bakie, and is fastened with fixed plate by continuous casting mold, it is possible to bakie, continuous casting mold, draw-off gear, fixed plate are firmly fixed and be integrally forming.
It addition, the continuous casting apparatus of the present invention the 21st aspect is characterised by, described fixed plate is made up of rustless steel or steel.
Possesses the continuous casting apparatus of this structure owing to utilizing the metal of the intensity with regulation to form fixed plate, therefore when by draw-off gear drawing mo(u)lding apply power disperse further to draw-off gear side, prevent further continuous casting mold tilt and mo(u)lding with situation about being drawn in the acclivitous state of above-below direction or right and left.
[invention effect]
According to the present invention the first to the third aspect, using the teaching of the invention it is possible to provide a kind of situation that the bakie detachable cover plate on bakie top just need not be able to confirm that molten metal surface, and can monitor, control the continuous casting apparatus of motlten metal face height with easy structure.
It addition, according to a fourth aspect of the present invention, using the teaching of the invention it is possible to provide a kind of situation that the bakie detachable cover plate on bakie top just need not be able to confirm that molten metal surface, and can monitor, control the continuous casing of motlten metal face height with easy structure.
According to the present invention the 5th to the 9th aspect, the mo(u)lding of manufacture does not produce defect, and the cleaning after feeding molten metal terminates is excellent.And, in the feeding molten metal pipe and continuous casting apparatus of the present invention, motlten metal will not be occurred to drip the casting fault caused.And, according to the present invention the 5th to the 9th aspect, it is possible to prevent molten metal leakage and the situation of motlten metal blocking.
According to a tenth aspect of the present invention, heater is to heat from outside for the bakie used in continuous casting apparatus used for magnesium alloy, and the structure that can separate.Therefore, when bakie is washed, it is not necessary to consider distribution situation about being soaked in water, and, the movement at cleaning is easy, it is possible to realize cleaning the raising of property, and the process during washing of bakie becomes easy.
According to the present invention the 11st aspect, heater, when bakie is installed, does not has contacting of bakie and electric heater, it is possible to avoid the breakage of electric heater, it is possible to the easiness that maintenance processes, and extends the life-span of electric heater.
According to the twelfth aspect of the present invention, owing to being to carry out, for the bakie used in continuous casting apparatus used for magnesium alloy, the structure that heats and can separate from outside, the process during washing of therefore bakie is easy.It is additionally, since to maintain the motlten metal lodging in bakie and becomes the scope of design temperature, therefore, it is possible to produce the mo(u)lding of high-quality.
It addition, according to the present invention the 13rd, 14 aspects, by heater control portion, the motlten metal lodging in bakie is maintained and becomes the scope of design temperature, therefore, it is possible to produce the mo(u)lding of high-quality.
According to the present invention the 15th, 16 aspects, by using the material of the pyroconductivity of setting in the part connected with mo(u)lding of continuous casting mold, it is possible to produce the mo(u)lding with good surface configuration.It is additionally, since mo(u)lding to be cooled rapidly, therefore, it is possible to guarantee sufficient productivity ratio.It is additionally, since and possesses described continuous casting mold such that it is able to produce the mo(u)lding with good surface configuration.It is additionally, since and possesses described continuous casting mold such that it is able to guarantee sufficient productivity ratio.
According to the present invention the tenth the seven to two 11 aspect, by using fixed plate to be fixed relative to draw-off gear by continuous casting mold, even if therefore continuous casting mold being applied the power of inclination when by draw-off gear drawing mo(u)lding, this continuous casting mold is also unaffected.
Accompanying drawing explanation
Fig. 1 is the sketch of the structure of the continuous casting apparatus of the first embodiment representing the present invention.
Fig. 2 is the sketch of the structure of the bakie of the first embodiment representing the present invention.
Fig. 3 is the flow chart of the content of the continuous casing of the first embodiment representing the present invention.
Fig. 4 is the sketch of the structure of the continuous casting apparatus representing existing example.
Fig. 5 is the sketch of the structure of the continuous casting apparatus representing existing example.
Fig. 6 is the sketch of the structure of the continuous casting apparatus representing second embodiment of the present invention.
Fig. 7 is the sketch of the structure of the feeding molten metal pipe representing second embodiment of the present invention.
Fig. 8 is the sketch of the fixing means to holding furnace of the feeding molten metal pipe representing Fig. 7.
Fig. 9 is the sketch of the insertion section of the feeding molten metal pipe representing Fig. 7.
Figure 10 is the sketch of the structure representing the die-cast device employing conventional feeding molten metal pipe.
Figure 11 is the axonometric chart observed above the right side from face side of the continuous casting apparatus of third embodiment of the present invention and obtain.
Figure 12 is the structure chart of the structure in the heater control portion representing the continuous casting apparatus constituting third embodiment of the present invention.
The exploded perspective view that Figure 13 is the bakie of the structure by the continuous casting apparatus illustrated in Figure 11 and heater is decomposed.
Figure 14 is the axonometric chart observed above the right side from rear side of the bakie of third embodiment of the present invention and obtain.
Figure 15 is the rearview obtained from back side observation of the bakie of third embodiment of the present invention.
Figure 16 is the amplification stereogram amplified by the heater illustrated in Figure 13.
Figure 17 is the viewed from above of the heater of third embodiment of the present invention and the top view that obtains.
Figure 18 is the sectional view of the structure of the continuous casting apparatus of the 4th embodiment representing the present invention.
Figure 19 is the sectional view of the structure of the continuous casting mold of the 4th embodiment representing the present invention.
Figure 20 is the integrally-built sketch of the continuous casting apparatus of the 5th embodiment representing the present invention.
Figure 21 is the axonometric chart of the structure of the fixed plate that possesses of the continuous casting apparatus of the 5th embodiment representing the present invention and periphery thereof.
Figure 22 is the top view of the structure of the fixed plate that possesses of the continuous casting apparatus of the 5th embodiment representing the present invention and periphery thereof.
Figure 23 is the sketch of the involutory order in the position of the fixed plate that the continuous casting apparatus of the 5th embodiment employing the present invention for explanation possesses, a () is the sketch representing situation about fixed plate being installed to the jut of bakie, b () is the sketch representing situation about fixed plate being arranged on the jut of bakie, (c) is the sketch of the situation representing the through hole that continuous casting mold is installed on fixed plate.
Figure 24 is the sketch of the involutory order in the position of the fixed plate that the continuous casting apparatus of the 5th embodiment employing the present invention for explanation possesses, a () is the sketch of the situation representing the position (lower end of the opening of horizontal line L and continuous casting mold) being adjusted bakie by lowering or hoisting gear, (b) is the sketch of the situation in the board stop representing and fixed plate being arranged on chassis body.
Figure 25 is the figure representing the result mo(u)lding manufactured being utilized to stero microscope and observation by light microscope.
Detailed description of the invention
It is described with reference to the embodiments of the present invention.It should be noted that in the following description, for same structure, mark same title and symbol, detailed.And, in the following description, it is described separately continuous casting apparatus and continuous casing according to embodiment.
<the first embodiment>
Hereinafter, first embodiment of the present invention is described with reference to Fig. 1～Fig. 5.Hereinafter, first describe the object lesson of the prior art associated with the first embodiment of the present invention in detail, then, carry out the explanation of concrete structure.
[object lesson of prior art]
In the past, such as in list of references 1 (Japanese Unexamined Patent Publication 2011-173148 publication), a kind of horizontal continuous casting apparatus for the mo(u)lding of magnesium alloy is cast continuously was disclosed.
As shown in Figure 4, continuous casting apparatus 1410 disclosed in list of references 1 possesses: fusing stove (not shown), holding furnace 1420, pressue device 1430, feeding molten metal pipe 1440, bakie 1450, mold mounting disc 1460, continuous casting mold 1470, draw-off gear 1480.Wherein, the peristome 1451 on bakie 1450 top is provided with the bakie cover plate 1452 of the stainless steel shielded by motlten metal from air atmosphere.
It is arranged such bakie cover plate 1452 and the motlten metal of magnesium alloy is because, from air atmosphere shielding, the reason that the reactivity of the motlten metal of magnesium alloy the most as is known is the highest.That is, the motlten metal M of magnesium alloy due to the contacting of air, and generate oxide, or easily absorb hydrogen, the quality of mo(u)lding W can decline.Therefore, in order to prevent such quality from declining, bakie cover plate 1452 is set and shields, and in bakie 1450, import the inactive gas G such as argon (Ar) gas and be formed as inactive gas atmosphere.
It addition, such as disclose a kind of vertical continuous casting device that the mo(u)lding of magnesium alloy is cast continuously in list of references 2 (No. 4273860 publications of Japanese Patent No.).
In continuous casting apparatus 1500 disclosed in this list of references 2, as shown in Figure 5, being provided with, on continuous casting mold 1502 top, the continuous casting mold cover plate 1503 that rustless steel (SUS) is made, the molten metal surface of the motlten metal M of the magnesium alloy being supplied in continuous casting mold 1502 from holding furnace 1501 is shielded by this continuous casting mold cover plate 1503 from air atmosphere.And, (the frequency band domain of microwave is 20～30GHz to configure microwave motlten metal face level determination device in the way of without compromising on the function of shielding of continuous casting mold cover plate 1503 on this continuous casting mold cover plate 1503, its radiation angle is less than 30 °) 1504, thus, the control of the motlten metal face height of motlten metal is carried out.
But, when using the bakie cover plate 1452 of stainless steel, continuous casting mold cover plate 1503 that bakie 1450 or continuous casting mold 1502 are shielded as list of references 1,2, there is the such problem of situation that cannot confirm molten metal surface.
So, in the case of continuous casting apparatus 1410 as list of references 1, towards mo(u)lding W injection cooling water injection direction towards the continuous casting mold 1470 on the sidewall being arranged on bakie 1450, therefore cooling water may between continuous casting mold 1470 and mo(u)lding W enter.As it has been described above, the reactivity of the motlten metal of magnesium alloy is the highest, the extremely sharp chemical reaction may be produced.Therefore, in this case, need to confirm that the situation of molten metal surface stops casting immediately, but cannot so carry out.
If dismounting bakie cover plate 1452, then can carry out the confirmation of molten metal surface, but in hypothesis inactive gas G is filled in bakie 1450, the mixed volume of the growing amount of oxide (field trash) etc. or hydrogen increases, and the quality of mo(u)lding W can be caused to decline.Accordingly, there exist all the time or dismantle intermittently the undesirable problem of situation of bakie cover plate 1452.
When assuming to dismantle bakie cover plate 1452 in casting and confirm molten metal surface, there is following worry.Such as, in the case of continuous casting apparatus 1410 as list of references 1, structurally, the eject position of cooling water shortens with the distance of the peristome 1451 on bakie 1450 top.Therefore, the cooling water sprayed towards the mo(u)lding W taken out from continuous casting mold 1470, it may happen that splash and be mixed in bakie 1450, produces the extremely sharp chemical reaction.
That is, in casting, wish to do one's utmost to avoid to dismantle bakie cover plate 1452, and on the other hand, it is desirable to carry out the confirmation of molten metal surface.
It addition, in order to stably manufacture mo(u)lding W, it is desirable to monitor and control motlten metal face height, used microwave motlten metal face level determination device 1504.Microwave motlten metal face level determination device 1504 has the transmission and reception unit 1505 sending reception microwave towards molten metal surface and the control portion (not shown) being connected with this transmission and reception unit 1505, but microwave cannot pass through continuous casting mold cover plate 1503.Therefore, when microwave motlten metal face level determination device 1504 to be arranged, need the gap (through hole) being provided for making microwave pass through in continuous casting mold cover plate 1503 grade.If considering, the generation of oxide (field trash) etc. prevents or being mixed into of hydrogen prevents, then there are the undesirable problem in gap arranging continuous casting mold cover plate 1503 grade together with microwave motlten metal face level determination device 1504.
Therefore, first embodiment of the present invention provides a kind of bakie cover plate that need not dismantle bakie top to be just able to confirm that the situation of molten metal surface, and it is easy structure, and can monitor, control continuous casting apparatus and the continuous casing of motlten metal face height.Hereinafter, the explanation of the concrete structure of first embodiment of the present invention is carried out.It should be noted that the premise of the continuous casting apparatus of the first embodiment is to possess: the holding furnace that the motlten metal of magnesium alloy is kept；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.But, in the following description, omit explanation and the diagram of a part for said structure sometimes.
[continuous casting apparatus]
First, an example of the overall structure of continuous casting apparatus is described with reference to Fig. 1.As it is shown in figure 1, continuous casting apparatus 11 possesses fusing stove (not shown), holding furnace 12, pressue device 13, feeding molten metal pipe 14, bakie 15, mold mounting disc 16, continuous casting mold 17, draw-off gear 18.It should be noted that this continuous casting apparatus 11 both can be so-called horizontal (horizontal type), it is also possible to be vertical (vertical-type), but in the following description, illustrate in case of horizontal.
In the case of the continuous casting apparatus 11 of described structure, it is formed with motlten metal M melted in fusing stove (not shown) and is frozen into the motlten metal path 19 flowed before mo(u)lding W by continuous casting mold 17.Motlten metal path 19 is so that motlten metal M flows successively through fusing stove (not shown), holding furnace 12, feeding molten metal pipe 14, bakie 15, mold mounting disc 16, the mode of continuous casting mold 17 are formed.The peristome described later 122,152 that motlten metal path 19 is formed due to the top in this motlten metal path 19 is covered by holding furnace cover plate 123, bakie cover plate 153 etc. respectively, and is substantially integrally formed into air-tight state.
It addition, be provided with pressue device 13 in holding furnace 12, the mobility of motlten metal M improves.
Motlten metal M is melted in fusing stove (not shown), and to the motlten metal of motlten metal path 19 supply.In fusing stove melted and in the motlten metal M of holding furnace 12 supply, usually contain that zero point is several～the field trash of the size of about 2mm.
It addition, mo(u)lding W is the slab (ingot bar) being cast motlten metal M continuously by continuous casting apparatus 11 and making it solidify, such as, it is cast into the pole that diameter X (with reference to Fig. 2) is tens～about 100mm.
Holding furnace 12 is the stove temporarily accumulated with the state being incubated into the temperature of regulation by the motlten metal M supplied from fusing stove (not shown), is generally formed into hermetic container shape.Holding furnace 12 specifically includes that and is generally formed into container-like holding furnace main body 121；Will be formed in the holding furnace cover plate 123 of peristome 122 obturation on the top of this holding furnace main body 121.Holding furnace 12 is provided with: be taken into by the motlten metal M supplied from fusing stove (not shown) supplies motlten metal mouth 12a；The feeding molten metal pipe 14 that motlten metal M in holding furnace 12 is supplied to bakie 15；The pressue device 13 being connected with the pressurized gas supply portion 134 being arranged in holding furnace main body 121.
In space between surface and the holding furnace cover plate 123 of the motlten metal M in holding furnace 12, the inactive gas G such as argon or helium is injected and is full of with the state of compression, as the blanketing gas avoiding motlten metal M to aoxidize.Therefore, the holding furnace 12 possessing holding furnace cover plate 123 and pressue device 13 becomes gas-pressurization type holding furnace.It is arranged on holding furnace cover plate 123 or the top of holding furnace main body 121 for motlten metal mouth 12a.
Holding furnace main body 121 is to accumulate the container of such as bottomed cylindrical of motlten metal M, and fusing amount is hundreds of kg～about several tons.Side wall upper part in this holding furnace main body 121 is provided with the pressurized gas supply portion 134 of the supply mouth forming inactive gas G.
Holding furnace cover plate 123 is by inaccessible for the peristome 122 of holding furnace main body 121 and become air-tight state in making holding furnace 12, and the motlten metal M in preventing holding furnace main body 121 and atmosphere and aoxidize such lid.Holding furnace cover plate 123 is arranged on the top of the peristome 122 of holding furnace main body 121 in mode to be opened/closed.This holding furnace cover plate 123 is such as made up of the tabular component of corrosion resistance, the stainless steel etc. of excellent heat resistance.It is provided with providing holes 123a making feeding molten metal pipe 14 pass at this holding furnace cover plate 123.
Pressue device 13 is the pressing mechanism pressurizeing the motlten metal M in holding furnace 12, e.g. utilizes the device that the surface of the motlten metal M in holding furnace 12 is pressed by compressed gas.Pressue device 13 is made up of the pressing mechanism of gas pressurized mode.Hereinafter, illustrate in case of enumerating the pressue device 13 of use gas pressurized mode.
Pressue device 13 such as possesses: the compressor 131 being compressed gas；The control device 132 that this compressor 131 is controlled；For driving compressor 131 and controlling the power supply 133 of device 132.The pressurization of pressue device 13 is different according to the kind of motlten metal M etc., is 1～100kPa.
It should be noted that, when the pressurization of pressue device 13 is less than 1kPa, the power pressing motlten metal M weakens, thus in motlten metal path 19, the flow velocity of the motlten metal M of flowing is slack-off, therefore by the motlten metal throughput of the time per unit of filter 14c described later less than desirable amount, the most preferred.And, when being pressurized above 100kPa of pressue device 13, the power pressing motlten metal M becomes strong, and thus in motlten metal path 19, the flow velocity of the motlten metal M of flowing accelerates, therefore faster than desired speed by speed during continuous casting mold 17, the most preferred.And, the dangerous increase of molten metal leakage, the most preferred.
Compressor 131 is such as made up of the compressor etc. being compressed the inactive gas G such as argon or helium, is connected with the pressurized gas supply portion 134 of holding furnace main body 121 via the pipe arrangement of inactive gas supply.
Feeding molten metal pipe 14 is the pipe arrangement for being supplied to bakie 15 by the motlten metal M in holding furnace 12, and at one end side has holding furnace side opening portion 14a, has bakie side opening portion 14b in another side.This feeding molten metal pipe 14 is the pipe arrangement that will link between holding furnace 12 and bakie 15, and holding furnace side opening portion 14a is arranged in the bottom in holding furnace 12, and bakie side opening portion 14b is arranged in the top in bakie 15.In holding furnace 12, feeding molten metal pipe 14 is configured to the state hung down from providing holes 123a of holding furnace cover plate 123, this holding furnace cover plate 123 forms the end face of holding furnace 12, and the holding furnace side opening portion 14a of lower end is arranged in the position between the bottom in the top layer of the motlten metal M forming oxide-film and the motlten metal M of accumulation sludge.This feeding molten metal pipe 14 such as stainless steel tube or steel pipe by internal diameter is 80mm is constituted.
Bakie 15 is the stove temporarily accumulated with the state of insulation by the motlten metal M supplied from holding furnace 12.Bakie 15 is the container of sealed shape, specifically includes that and is shaped generally as container-like casing 151；The bakie cover plate 153 of the peristome 152 on the top of this casing 151 inaccessible.
Bakie 15 is provided with: the filter 14c that the motlten metal M in this bakie 15 is filtered；For the mold mounting disc 16 continuous casting mold 17 being arranged on the outside side wall of bakie 15.It should be noted that for the motlten metal M in this bakie 15, owing to bakie 15 connects with holding furnace 12 via feeding molten metal pipe 14, become state motlten metal M pressurizeed by described pressue device 13.
Casing 151 is formed with the feeding molten metal mouth 154 supplied to continuous casting mold 17 by motlten metal M on the sidewall of continuous casting mold 17 side.
Bakie cover plate 153 is the lid becoming air-tight state in peristome 152 obturation of casing 151 is made bakie 15 by opening and closing freely.Bakie cover plate 153 is by making the space on the motlten metal M in casing 151 become the confined space of full inactive gas G, and prevents motlten metal M from aoxidizing with atmosphere.
Filter 14c is arranged in the way of stopping the flowing of motlten metal M, is supplied to continuous casting mold 17 with the state purified by motlten metal M.That is, filter 14c is for stoping the field trash in motlten metal M from bakie 15 to the flowing of continuous casting mold 17 side (downstream) or the filter of removal of inclusions.Filter 14c is such as made up of the metal cancellous structure of rustless steel etc..
Mold mounting disc 16 is the component for continuous casting mold 17 is fixed on bakie 15, is folded between outer wall 155 and continuous casting mold 17, and this outer wall 155 is provided with the feeding molten metal mouth 154 sprayed by the motlten metal M in casing 151.Mold mounting disc 16 is such as made up of the substantially a ring-shaped component of thermostability, end side (upstream side) is fixed on bakie 15 with the state connected with the feeding molten metal mouth 154 of casing 151, and another side (downstream) is fixed on continuous casting mold 17 with the state connected with the inlet of continuous casting mold 17 (not shown).
Continuous casting mold 17 be the motlten metal M being supplied in mould from the feeding molten metal mouth 154 of bakie 15 is cooled down while send from this continuous casting mold 17, thus mold the cooling mold of the shape of regulation.Continuous casting mold 17 has such as die face to the substantially tubular that bar-shaped mo(u)lding W casts continuously.This continuous casting mold 17 is such as made up of the structure of high copper, aluminium alloy, rustless steel or the graphite of pyroconductivity.Being provided with such as at continuous casting mold 17: chiller (not shown), it includes the water collar forcibly once cooled down this continuous casting mold 17 and mo(u)lding W or the cooling water nozzle device etc. carrying out cooling twice；Feeding lubricating device (not shown), it supplies lubricant to the casting plane of continuous casting mold 17 and prevents mo(u)lding W to be sintered in casting plane.The substantially upstream side opening of the continuous casting mold 17 of tubular connects with the feeding molten metal mouth 154 of bakie 15.
Draw-off gear 18 is device mo(u)lding W pull-out carried from continuous casting mold 17, such as, possesses multiple roller 18a, the 18b etc. rotated by electro-motor (not shown).Roller 18a such as transmits the casting direction of mo(u)lding W along the downside near the opening from continuous casting mold 17, configures multiple in the downside of mo(u)lding W, be configured with roller 18b in the upside opposed with this roller 18a in the way of laying.
The mo(u)lding W carried by draw-off gear 18 can be cut into specific length by power saws (not shown) etc. and carry out keeping.
The overview of the overall structure of continuous casting apparatus 11 is as described above.In the present invention, in the device of this structure, as in figure 2 it is shown, at the laser detector 110 being arranged over the motlten metal face height of the motlten metal M in this bakie 15 is measured of bakie 15.
Laser detector 110 launches laser in bakie 15, and this laser reflecting the motlten metal M touched in bakie 15 carries out light, thus measures and the distance of motlten metal M, i.e. motlten metal face height.
Therefore, the bakie cover plate 153 of the present invention needs the laser light mechanism 153a with the laser light making laser detector 110.
It addition, the bakie cover plate 153 of the present invention is for the situation of visuognosis molten metal surface, and need that have can be to the visuognosis mechanism 153b carrying out visuognosis in bakie 15.
The bakie cover plate 153 of the present invention is preferably used as laser light mechanism 153a and visuognosis mechanism 153b at the heat resistant glass plate formed by heat resistant glass that partially or fully uses of bakie cover plate 153.At this, the situation of the heat resistant glass plate formed by heat resistant glass is used as the local at bakie cover plate 153, can list such as stainless steel bakie cover plate 153 local arrange from surface the through hole portion (not shown) to the back side, and this hole portion install heat resistant glass plate form.Hereinafter, this form is referred to as visuognosis window.Can be arranged when arranging visuognosis window multiple, using a visuognosis window as laser light mechanism 153a use, and other visuognosis window be used as visuognosis mechanism 153b.
It addition, it is overall all to use the situation of the heat resistant glass plate formed by heat resistant glass to refer to utilize heat resistant glass plate to form bakie cover plate 153 at bakie cover plate 153.Like this, owing to heat resistant glass plate is transparent, therefore bakie cover plate 153 itself can have laser light mechanism 153a and visuognosis mechanism 153b.
It should be noted that laser detector 110 be preferably provided at from motlten metal M be the position of more than 500mm.When arranging distance than it in short-term, due to motlten metal M heat and probability that laser detector 110 breaks down raises, possibly cannot continue or discontinuously and stably mensuration motlten metal face height.
Continuous casting apparatus 11 from the description above, bakie cover plate 153 have make from laser detector 110 launch laser light laser light mechanism 153a and can be to the visuognosis mechanism 153b carrying out visuognosis in bakie 15, and, there is above bakie 15 laser detector 110 that the motlten metal face height to the motlten metal M in bakie 15 is measured.Therefore, the bakie cover plate 153 that need not dismantle bakie 15 top is just able to confirm that the situation of molten metal surface, and motlten metal face height can be monitored, be controlled.
[continuous casing]
If using continuous casting apparatus 11 described above, then it is capable of monitoring well, controlling the continuous casing of motlten metal face height.
As it is shown on figure 3, described continuous casing is the method pull-out of mo(u)lding W level cast continuously, including laser determination step S1, quantity delivered regulating step S2.
Laser determination step S1 is the described step being measured motlten metal face height via bakie cover plate 153 by laser detector 110.
Laser determination step S1, in the casting continuously of the mo(u)lding W of magnesium alloy, continues or carries out intermittently.Time interval when persistently carrying out can arbitrarily set.For example, it is possible to be set to every 1 minute, every 5 minutes etc..
The data of the motlten metal face height measured in this step such as send to the control device 132 shown in Fig. 2, or sometimes show its content in the display devices such as not shown monitor.
Then the motlten metal face height that the quantity delivered regulating step S2 carried out corresponds to measure in laser determination step S1 regulates the step of the quantity delivered of the motlten metal M from holding furnace 12 supply.
The data of the motlten metal face height sent in laser determination step S1 send to control device 132 as mentioned above, or sometimes show its information in the display devices such as not shown monitor.
Therefore, control device 132, according to the program being stored in advance in the storing mechanisms such as hard disk, the most suitably regulates the pressure of compressor 131, thus regulates the quantity delivered of the motlten metal M supplied to bakie 15 from holding furnace 12.Namely be based on the data of motlten metal face height and the quantity delivered of motlten metal M is carried out feedback control.
Row are as an example, when the diameter X of the mo(u)lding W pulled out from continuous casting mold 17 is more than 85mm, in the way of the motlten metal face height H that measured by the laser detector 110 centrage CL away from continuous casting mold 17 becomes more than 350mm, i.e., when X >=85mm, in the way of H >=350mm, regulate the quantity delivered of the motlten metal M supplied from holding furnace 12.
Additionally, when the diameter X of the mo(u)lding W pulled out from continuous casting mold 17 is less than 85mm, in the way of the motlten metal face height H that measured by the laser detector 110 centrage CL away from continuous casting mold 17 becomes more than 300mm, i.e., when X ＜ 85mm, in the way of H >=300mm, regulate the quantity delivered of the motlten metal M supplied from holding furnace 12.
So, by assuring that with the diameter X matched motlten metal face height of mo(u)lding W, it is possible to suitably obtain the pressure of motlten metal M.Therefore, it is possible to stably continuous cast divine force that created the universe W.
It should be noted that regulation can be carried out by operator's pressure based on the information regulation compressor 131 shown on the display apparatus from the operation of the quantity delivered of the motlten metal M of holding furnace 12 supply.
The upper limit of the motlten metal face height H of motlten metal M not specially provided for, but in the case of getting too close to the upper end of peristome 152 of bakie 15, bakie cover plate 153 may damage, or may overflow from peristome 152 when the quantity delivered of operating molten metal M mistakenly.It is therefore preferable that be set as the gap that the upper end away from peristome 152 at least keeps about 100mm.
Thus, in the case of either the diameter X at mo(u)lding W is more than 85mm or in the case of the diameter X of mo(u)lding W is less than 85mm, when becoming motlten metal face below height H (below the height 350mm or below 300mm of the centrage CL away from continuous casting mold 17) respectively provided, improve the pressure of compressor 131, and increase the quantity delivered of motlten metal M.Otherwise, when the upper end of motlten metal identity distance peristome 152 becomes within 100mm degree, reduce the pressure of compressor 131, and reduce the quantity delivered of motlten metal M.Control if so, the motlten metal face height of motlten metal M can be maintained suitable scope the most all the time, it is possible to suitably keep the pressure of motlten metal M, therefore, it is possible to stably continuous cast divine force that created the universe W.
Continuous casing from the description above, can measure motlten metal face height via bakie cover plate 153 by laser detector 110, and, can suitably regulate this motlten metal face height according to the diameter X of mo(u)lding W.That is, the bakie cover plate 153 that need not dismantle bakie 15 top is just able to confirm that the situation of molten metal surface, and can monitor, control motlten metal face height.
<the second embodiment>
Hereinafter, with reference to Fig. 6～Figure 10, second embodiment of the present invention is described.Hereinafter, first describe the object lesson of the prior art associated with second embodiment of the present invention in detail, then carry out the explanation of concrete structure.
[object lesson of prior art]
In the past, in continuous casting apparatus, in order to the feeding molten metal pipe that the motlten metal lodging in holding furnace uses to bakie supply is existed various structure, such as list of references 3 (No. 3179289 publications of Japanese Patent No.) records the feeding molten metal pipe of the following structure of oriented die casting machine supplying melting metal.
As shown in Figure 10, the motlten metal M sent from motlten metal discharge portion 2131, in die-cast device 2111, is supplied by the feeding molten metal pipe 2101 of list of references 3 to die casting sleeve 2141.And, motlten metal discharge portion 2131 possesses substrate 2134 and injection sleeve 2132, and be suspended in the holding furnace 2121 accumulating motlten metal M, this substrate 2134 is equipped with motlten metal stream 2135, and this injection sleeve 2132 maintains the injection piston 2133 slided along above-below direction and is fixedly installed on substrate 2134 in inside.
Feeding molten metal pipe 2101 possesses one end to the bleed pipe 2103 hung down in holding furnace 2121 and engages with the other end for motlten metal pipe 2102 for motlten metal pipe 2102 with substrate 2134 engages and hang down, the movable tubes 2104 that is inserted in die casting sleeve 2141 to engage with bleed pipe 2103 in the way of above-below direction lifting freely, has for motlten metal pipe 2102 and rolls inclination that is oblique and that rise towards bleed pipe 2103.And, feeding molten metal pipe 2101 is in order to prevent the oxidizing fire of the motlten metal M to die casting sleeve 2141 supply, and possesses the gas injection nozzle 2105 for being blown into by inactive gas to motlten metal M in the upper end of bleed pipe 2103.
In motlten metal discharge portion 2131, by making injection piston 2133 slide along above-below direction in injection sleeve 2132, and the motlten metal M accumulated in holding furnace 2121 is accommodated in motlten metal stream 2135, sending for motlten metal pipe 2102 to feeding molten metal pipe 2101.Further, in feeding molten metal pipe 2101, it is supplied in die casting sleeve 2141 via the bleed pipe 2103 connected with for motlten metal pipe 2102 and movable tubes 2104 to the motlten metal M sent for motlten metal pipe 2102.
But, in the feeding molten metal pipe 2101 of list of references 3, owing to the tilt angle theta for motlten metal pipe 2102 is big, therefore the motlten metal M's dripped in die casting sleeve 2141 by bleed pipe 2103 and movable tubes 2104 from the end for motlten metal pipe 2102 drips apart from elongated, especially in the starting stage of feeding molten metal, the liquid level of the motlten metal M in die casting sleeve 2141 is disorderly, there is the problem by producing the defects such as blow hole from the mo(u)lding manufactured by the die casting (not shown) of die casting sleeve 2141 supplying melting metal M.It should be noted that when being blown into inactive gas to motlten metal M, due to the disorder of the liquid level of motlten metal M, produce being involved in motlten metal M of inactive gas, the mo(u)lding of manufacture easily produces the defects such as blow hole.
It addition, in feeding molten metal pipe 2101, it is securely engaged by screw thread etc. for motlten metal pipe 2102 and substrate 2134, and the top board 2122 for motlten metal pipe 2102 and holding furnace 2121 is securely engaged also by screw thread etc..Therefore, when feeding molten metal pipe 2101 being cleaned after feeding molten metal terminates, being dismantled from top board 2122 (holding furnace 2121) and substrate 2134 by feeding molten metal pipe 2101 (for motlten metal pipe 2102) and need for a long time, the motlten metal M therefore remained in feeding molten metal pipe 2101 solidifies.As a result of which it is, the cleaning of feeding molten metal pipe 2101 needs long-time, there is cleaning property and decline such problem.
Therefore, second embodiment of the present invention is made in view of described problem, there is provided a kind of when being used in continuous casting apparatus, the mo(u)lding manufactured will not produce defect, and feeding molten metal terminate after the feeding molten metal pipe of cleanings excellence and employ the continuous casting apparatus of this feeding molten metal pipe.Hereinafter, the explanation of the concrete structure of second embodiment of the present invention is carried out.It should be noted that the premise of the continuous casting apparatus of the second embodiment is to possess: the holding furnace that the motlten metal of magnesium alloy is kept；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.But, in the following description, omit explanation and the diagram of a part for said structure sometimes.
[feeding molten metal pipe]
It is described with reference to the feeding molten metal pipe of the continuous casting apparatus of the present invention.
As shown in Figure 6, Figure 7, feeding molten metal pipe 21 is used in the pressurization by pressue device 241 and the continuous casting apparatus 221 that supplied by the motlten metal M accumulated in holding furnace 231 to bakie 251.Here, motlten metal M is to melt in fusing stove (not shown) and to the motlten metal of holding furnace 231 supply, be made up of magnesium alloy.
Further, feeding molten metal pipe 21 possesses for motlten metal pipe portion 22, holding section 28 (lip portions 29).Hereinafter, each structure is illustrated.It should be noted that about the structure i.e. holding furnace 231 of continuous casting apparatus 221, pressue device 241, bakie 251 etc., described below.
The metal tube supplied by the motlten metal M accumulated in holding furnace 231 it is disposed between holding furnace 231 and bakie 251 to bakie 251 for motlten metal pipe portion 22, corrosion resistance, the stainless steel tube of excellent heat resistance or steel pipe etc. can be used, and, in the case of magnesium alloy, preferably being made up of the raw material not comprising the Ni that the corrosion resistance making them declines, internal diameter is such as 80mm.Further, as it is shown in fig. 7, possess base end part the 23, first bending part 24, rake the 25, second bending part 26, leading section 27 for motlten metal pipe portion 22, and engaged with holding furnace 231 by holding section 28 described later.And, preferably it is made up of base end part the 23, first bending part 24,1 pipe being formed continuously between rake the 25, second bending part 26 and each portion of leading section 27 for motlten metal pipe portion 22 but it also may be to be formed as 1 pipe by bonding or deposition etc. by combining continuously between multiple pipes.
In base end part 23 is the motlten metal M hanging down to from holding furnace cover plate 233 and lodging in holding furnace 231 and accept the part of the motlten metal M sent by pressue device 241 described later, it is made up of straight tube.And, as long as the position of the lower end of base end part 23 is in motlten metal M, and be not particularly limited, but it is preferably placed between the bottom (orlop) of the top layer (the superiors) of the motlten metal M forming oxide-film and the motlten metal M of accumulation sludge.
First bending part 24 is disposed between base end part 23 and rake 25 and makes base end part 23 and rake 25 continuous print part, is made up of bending tube.The bending angle α of the first bending part 24 suitably sets in base end part 23 hangs down holding furnace 231 and in the way of the tilt angle theta of rake 25 inclination regulation.
Rake 25 is disposed between base end part 23 and leading section 27 and makes base end part 23 and leading section 27 continuous print part via the first bending part 24 and the second bending part 26, makes motlten metal M move to leading section 27 from base end part 23.Further, rake 25 is made up of straight tube.
Rake 25 has from the first bending part 24 side towards the inclination of liter the second bending part 26 side.Further, the tilt angle theta of rake 25 is with respect to the horizontal plane 1～10 degree.It is preferably 3～5 degree.
Here, in the case of the tilt angle theta of rake 25 is less than 1 degree, at the end of feeding molten metal, the motlten metal of the second bending part 26 is not discharged to the first bending part 24 side, and is stranded in rake 25.As a result of which it is, the motlten metal deficiency of the second bending part 26 deteriorates, produce and drip the casting fault caused from the motlten metal of the second bending part 26, and the motlten metal being stranded in rake 25 solidifies, and the cleaning of feeding molten metal pipe decline.And, when the tilt angle theta of rake 25 is more than 10 degree, need the extension of the leading section 27 hung down in bakie 251.Its result is, the motlten metal dripped by leading section 27 from the second bending part 26 drip apart from elongated, especially in the starting stage of feeding molten metal, the liquid level of the motlten metal of bakie 251 produces disorder, or produce inactive gas being involved in motlten metal being sealing in bakie 251, casting property declines, and the mo(u)lding manufactured produces the defects such as blow hole.
Second bending part 26 is disposed between rake 25 and leading section 27 and makes rake 25 and leading section 27 continuous print part, is made up of bending tube.The bending angle β of the second bending part 26 by due to leading section 27 to bakie 251 be inserted into etc. and hang down and rake 25 tilt the tilt angle theta of regulation in the way of suitably set.
Leading section 27 is to hang down in bakie 251 and spray the part of motlten metal M, is made up of straight tube.And, if the insertion method of leading section 27, leading section 27 lower end position can by ejection bakie 251 in the accumulation layer of formation motlten metal M, and be not particularly limited.
As it has been described above, be made up of straight tube for the base end part 23 in motlten metal pipe portion 22, rake 25 and leading section 27, thus, the feed path of motlten metal M becomes the shortest, it is possible to will suppress into Min. for the decline of the molten metal temperature in motlten metal pipe portion 22.
Holding section 28 is disposed on for motlten metal pipe portion 22, and makes the part engaged for motlten metal pipe portion 22 with holding furnace 231.And, holding section 28 has lip portions 29, this lip portions 29 is arranged on the base end part 23 for motlten metal pipe portion 22, and dismounting is freely relative to the snap fastener 235 (with reference to Fig. 8) being arranged on the holding furnace cover plate 233 covered by the peristome 232 of holding furnace 231.Thus, after feeding molten metal terminates, it is possible at short notice feeding molten metal pipe 21 (for motlten metal pipe portion 22) is dismantled from holding furnace 231.As long as it should be noted that the structure of holding section 28 dismounts freely to the snap fastener 235 being located at holding furnace cover plate 233, being not limited to lip portions 29.
Here, as shown in Figure 8, snap fastener 235 is commercially available engaging apparatus, preferably toggle folder 236.Toggle folder 236 is that the action utilizing bar 236a can carry out the joint of 2 components and the fixture of the releasing of this joint.
Hereinafter, the fixing and demolition of feeding molten metal pipe 21 (for motlten metal pipe portion 22) are described.
As shown in Figure 8, the base end part 23 for motlten metal pipe portion 22 is inserted to the installing hole (not shown) being located on the one of the pressue device 241 i.e. support plate 237 of pump 242 (with reference to Fig. 7).Further, use the toggle folder 236 in four corners being arranged on support plate 237, support plate 237 is fixed in the holding section 28 (lip portions 29) for motlten metal pipe portion 22.In fig. 8, record two toggle folders 236, and record the holding section after joint 28 (lip portions 29) and the state of support plate 237.It follows that inserting for the motlten metal pipe portion 22 installing hole 234 on the holding furnace cover plate 233 being located in holding furnace 231 of support plate 237 will be fixed on.Then, use the toggle folder 236 of the surrounding being arranged on installing hole 234, support plate 237 is fixed on holding furnace cover plate 233, thus feeding molten metal pipe 21 (for motlten metal pipe portion 22) is fixed on holding furnace 231 (holding furnace cover plate 233).In fig. 8, record two toggle folders 236, and record the support plate before joint 237 and the state of holding furnace cover plate 233.
It should be noted that, when the pressue device (not shown) of employing gas pressurized mode described later is as pressue device 241, it is also possible to the holding section 28 (lip portions 29) for motlten metal pipe portion 22 is directly fixed on by toggle folder 236 the holding furnace cover plates 233 of holding furnace 231.
It should be noted that, the use order of feeding molten metal pipe 21 as be described hereinafter is recorded like that, when accumulating motlten metal M in holding furnace 231, make the bar 236a of whole toggle folders 236 to engaging releasing direction action, thus release the joint of holding furnace cover plate 233 and support plate 237, and release the joint of support plate 237 and holding section 28 (lip portions 29), in this condition from holding furnace 231 via feeding molten metal pipe 21 to bakie 251 supplying melting metal M.And, after feeding molten metal terminates, will dismantle from holding furnace 231 for motlten metal pipe portion 22 (base end part 23).
As shown in Fig. 7, Fig. 9, described feeding molten metal pipe 21, when using the mechanical pump (pump 242) possessing motlten metal stream 244 as pressue device 241, is preferably provided with mouthful 244b that sends to motlten metal stream 244 and dismounts the insertion section 210 inserted freely in the end of the base end part 23 for motlten metal pipe portion 22.
Here, be directed to send, at motlten metal stream 244, the end that the groove portion 244c that mouthful 244b formed is inserted into the insertion section 210 that mouthful 244b dismounting inserts freely of sending of motlten metal stream 244.Further, the size of groove portion 244c is formed with the size of the end of base end part 23 on an equal basis or bigger.
The structure of insertion section 210 is not defined to the structure that Fig. 9 records, it is also possible to be other structure.Such as, although not shown but it also may be the end diameter reducing from base end part 23 and prominent reducing diameter part.
It follows that preferred embodiment (variation) of the feeding molten metal pipe 21 described in Shuo Ming.
As it is shown in fig. 7, feeding molten metal pipe 21 is preferably at least one of structure around covered of the length direction for motlten metal pipe portion 22 by heater 211.Further, heater 211 is made up of the heating wire of heating under the effect supplied from the electric current of not shown power supply unit, it is possible to use known heating wire.At least one of structure around of the length direction of heater 211 is also covered it should be noted that feeding molten metal pipe 21 can also be the heat-insulation layer 212 by being made up of insulation materials such as glass cottons.
It addition, feeding molten metal pipe 21 preferably covers for 30～more than 90% on the length direction in motlten metal pipe portion 22.When the coverage rate of heater 211 is less than 30%, easily produces temperature for motlten metal pipe portion 22 and decline.And, even if the coverage rate of heater 211 is more than 90%, the further suppression declined for the temperature in motlten metal pipe portion 22 also cannot be expected.It should be noted that the coverage rate of heat-insulation layer 212 is preferably also the 30～90% of the length direction of heater 211 (for motlten metal pipe portion 22), its reason is identical with described heater 211.
[continuous casting apparatus]
It follows that explanation employs the continuous casting apparatus of the present invention of described feeding molten metal pipe.
As shown in Figure 6, continuous casting apparatus 221 is that the motlten metal M making metal solidifies and the device of continuous cast divine force that created the universe W in continuous casting mold 261.Continuous casting apparatus 221 possesses holding furnace 231, pressue device 241, feeding molten metal pipe 21, bakie 251, continuous casting mold 261, draw-off gear 271.It should be noted that continuous casting apparatus 221 both can be so-called horizontal (horizontal type), it is also possible to be vertical (vertical-type), describe the situation of horizontal (horizontal type) in figure 6.
Hereinafter, each structure is illustrated.It should be noted that about feeding molten metal pipe 21 as it has been described above, therefore omit the description.
Motlten metal M is motlten metal that is melted and that supply to holding furnace 231 in fusing stove (not shown), is made up of magnesium alloy.And, as shown in Figure 6, mo(u)lding W is the slab (ingot bar) being cast motlten metal M continuously by continuous casting apparatus 221 and making it solidify, such as, be made up of the pole of a diameter of tens～about 100mm.As shown in Figure 6, mo(u)lding W is pulled to casting direction by the conveying roller 272 of draw-off gear 271, thus pulls out from the mold face of continuous casting mold 261.Transmitted by conveying roller 272 from the mo(u)lding W of mold face pull-out, the most also carried out cooling twice forcibly by the cooling water discharged from chiller (not shown).Then, mo(u)lding W is pulled by conveying roller 272 and carries to determined location, is cut into desired length.
The motlten metal M supplied from fusing stove (not shown) is temporarily accumulated by holding furnace 231 with the state being incubated into the temperature of regulation.Holding furnace 231 is shaped generally as hermetic container shape, is the container of the bottomed cylindrical accumulating motlten metal M, such as, is made up of the structure that internal diameter is 1m, the degree of depth is 1.5m and capacity is about 350kg.Side wall upper part in this holding furnace 231 is provided with the supply mouth (not shown) of inactive gas.And, holding furnace 231 is provided with the pressue device 241 pressurizeing motlten metal M.
As shown in Figure 6, Figure 7, pressue device 241 is the device sent to the base end part 23 for motlten metal pipe portion 22 from holding furnace 231 by motlten metal M by pressurization.The pressuring method of pressue device 241 is also not particularly limited, can list gas pressurized mode, pump pressuring method or both by the way of etc., preferably pump pressuring method.And, the pump 242 as the pressue device 241 of pump pressuring method includes mechanical pump, electromagnetic pump etc., preferably mechanical pump.It should be noted that the pressurization of pressue device 241 is preferably 1～100kPa.
As shown in Fig. 7, Fig. 9, mechanical pump (pump 242) is preferably provided with: be equipped with the matrix part 243 of the motlten metal stream 244 of stream as motlten metal M；Inside be located at the sending into mouth 244a side of motlten metal stream 244 of this matrix part 243 and by motlten metal M to the impeller 245 sent for the base end part 23 in motlten metal pipe portion 22；The rotary shaft 246 linked with this impeller 245；Drive the motor unit 247 that this rotary shaft 246 rotates；The pump being connected with this motor unit 247 controls device 248, pump power supply 249.In this mechanical pump (pump 242), by driving impeller 245 to rotate, motlten metal M is pressurizeed, by this pressurization, motlten metal M is passed out to the inside of base end part 23 (for motlten metal pipe portion 22).
It should be noted that, mechanical pump (pump 242) motlten metal discharge portion 2131 as shown in Figure 10 is such, can be to be slided along above-below direction by the injection piston 2133 making the inside of the injection sleeve 2132 being fixedly installed on the substrate 2134 being equipped with motlten metal stream 2135 be kept, and pump motlten metal M being pressurizeed and being sent.And, electromagnetic pump can use known pump.
The pressue device of gas pressurized mode is preferably provided with not shown being compressed the inactive gas such as argon or helium and compressor compressed gas being supplied in holding furnace, the control device controlling this compressor, driving compressor and the power supply of control device.In this pressue device, by utilizing compressor compressed gas to be supplied in holding furnace, and is pressurizeed in the surface of the motlten metal accumulated in holding furnace, by this pressurization, motlten metal is passed out to the inside of feeding molten metal pipe (for motlten metal pipe portion).
The motlten metal M supplied via feeding molten metal pipe 21 from holding furnace 231 is temporarily accumulated by bakie 251 with the state of insulation.Bakie 251 is shaped generally as container-like.And, internally installed at bakie 251 has the filter (not shown) filtered the motlten metal M in this bakie 251 and separated by useless field trash.And, bakie 251 and be formed in the bottom of the sidewall of continuous casting mold 261 side by motlten metal M to continuous casting mold 261 supply for motlten metal mouth.It should be noted that for the motlten metal M in this bakie 251, owing to this bakie 251 connects with holding furnace 231 via feeding molten metal pipe 21, motlten metal M becomes the state pressurizeed by pressue device 241.
Continuous casting mold (casting mold) 261 is to cool down from the motlten metal M supplying motlten metal confession to be given in mould of bakie 251 and send, and is thus shaped to the cooling mold of the shape of regulation.Continuous casting mold 261 such as has the die face to the substantially tubular that bar-shaped mo(u)lding W casts continuously.And, continuous casting mold 261 is such as made up of the material of high copper, aluminium alloy, rustless steel or the graphite of pyroconductivity.It should be noted that continuous casting mold 261 is such as by being folded in being connected for the mold mounting disc 252 between motlten metal mouth of this continuous casting mold 261 and bakie 251 with bakie 251.
Continuous casting mold 261 is provided with such as: the chiller (not shown) that the water collar the most once cooled down this continuous casting mold 261 and mo(u)lding W or the cooling water nozzle device etc. carrying out cooling twice are constituted；Supply lubricant to the casting plane of continuous casting mold 261 and prevent mo(u)lding W to be sintered in the feeding lubricating device (not shown) of casting plane.
Draw-off gear 271 carries out drawing for the mo(u)lding W sent from bakie 251 via continuous casting mold 261.Draw-off gear 271 can use known draw-off gear, such as, by a pair conveying roller 272, mo(u)lding W is carried out drawing.
It should be noted that the feeding molten metal pipe 21 of the present invention not only can use in described continuous casting apparatus 221, it also is able to use in the die-cast device 2111 shown in Figure 10.And, in the same manner as in time being used in continuous casting apparatus 221, when being used in die-cast device 2111, the feeding molten metal pipe 21 of the present invention also can play the effect that the mo(u)lding of manufacture will not be made to produce the cleanings excellence after defect and feeding molten metal terminate.And, when being used in die-cast device 2111, the feeding molten metal pipe 21 of the present invention also can play will not occur motlten metal drip the casting fault caused and be prevented from molten metal leakage, motlten metal block such effect.
[the use order of feeding molten metal pipe]
It follows that as a example by continuous casting apparatus, the use order of feeding molten metal pipe is described.
(1) as shown in figs. 6-9, the insertion section 210 of feeding molten metal pipe 21 (base end part 23) is dismounted it is inserted into pressue device 241 (the sending a mouthful 244b of motlten metal stream 244) freely.Then, snap fastener 235 (toggle folder 236) is used to be engaged with the support plate 237 of pressue device 241 holding section 28 (lip portions 29) of feeding molten metal pipe 21 (base end part 23).Thus, pressue device 241 is fixed in feeding molten metal pipe 21 (base end part 23) dismounting freely.
(2) the feeding molten metal pipe 21 being fixed on pressue device 241 is inserted in holding furnace 231, uses snap fastener 235 (toggle folder 236) to be engaged with the holding furnace cover plate 233 of holding furnace 231 by support plate 237.Thus, feeding molten metal pipe 21 is dismounted it is fixed on holding furnace 231 freely.It should be noted that the leading section 27 of feeding molten metal pipe 21 is waited also by insertion and is inserted in bakie 251.
(3) from fusing stove (not shown), motlten metal M is supplied in holding furnace 231, in holding furnace 231, accumulates the motlten metal M of ormal weight.
(4) drive pressue device 241, via feeding molten metal pipe 21, motlten metal M is supplied in bakie 251 from holding furnace 231.Now, by whole snap fasteners 235 (toggle folder 236) to engaging the joint releasing direction operation, engagement release portion 28 (lip portions 29) and support plate 237, and the joint of support plate 237 and holding furnace cover plate 233 is released.As a result of which it is, when feeding molten metal pipe 21 and holding furnace 231 fixing is released from, motlten metal M is supplied to bakie 251.Then, being cast as mo(u)lding W to the motlten metal M of bakie 251 supply by continuous casting mold 261, the mo(u)lding W after casting is pulled out from continuous casting mold 261 by draw-off gear 271, and is cut into specific length.
Now, the rake 25 due to feeding molten metal pipe 21 has the inclination of 1～10 degree, it is possible to prevent motlten metal M from dropping onto the molten metal surface of bakie 251 or the situation that its distance (length of leading section 27) of dripping is elongated from the second bending part 26.As a result of which it is, the disorder of liquid level of the motlten metal M of bakie 251, inactive gas be involved in disappearance, casting property improves.
(5) owing to terminating casting, and stop the driving of pressue device 241, stop the supply of motlten metal M based on feeding molten metal pipe 21.It follows that base end part 23 and the leading section 27 of feeding molten metal pipe 21 are dismantled from holding furnace 231 and bakie 251, the inside of the feeding molten metal pipe 21 after dismounting is cleaned.
Now, owing to the rake 25 of feeding molten metal pipe 21 has the inclination of 1～10 degree, and motlten metal M promptly discharges to the first bending part 24 side, and therefore the motlten metal deficiency of the second bending part 26 takes a turn for the better, and the drip casting fault that causes of motlten metal disappears.And, the amount remaining in the motlten metal M in feeding molten metal pipe 21 also disappears, and the cleaning of feeding molten metal pipe 21 becomes easy.
It addition, feeding molten metal pipe 21 is dismounted by holding section 28 (lip portions 29) is fixed on holding furnace 231 freely, then, by fixing releasing in described order (4).And, insertion section 210 is dismounted insertion pressue device 241 freely by feeding molten metal pipe 21.Its result is, can carry out at short notice feeding molten metal pipe 21 from holding furnace 231 and the dismounting of pressue device 241, suppress into Min. therefore, it is possible to the temperature of the motlten metal M in feeding molten metal pipe 21 (for motlten metal pipe portion 22) declined.As a result of which it is, feeding molten metal pipe 21 easily cleans.
<the 3rd embodiment>
Hereinafter, with reference to Figure 11～Figure 17, third embodiment of the present invention is described.Hereinafter, first describe the object lesson of the prior art associated with third embodiment of the present invention in detail, then, carry out the explanation of concrete structure.
[object lesson of prior art]
In the past, the bakie such as list of references 4 (Japan Patent 3668245) used in the continuous casting apparatus of magnesium alloy was open like that, in order to maintain the temperature of the motlten metal of accumulation, and was built-in with electric heater at diapire and sidewall.
But, about the cleaning of the bakie that the motlten metal of magnesium alloy is accumulated, when casting diverse alloy, in order to avoid the residual of front nonrecoverable alloying component, need by washing, the magnesium alloy on the inner peripheral surface being attached to bakie to be carried out.
But, according to conventional bakie, owing to being built-in with electric heater, it is therefore desirable to wash in the way of avoiding electric heater and electric wiring to be soaked in water, the most inconvenient.
Further, since be built-in with electric heater, therefore bakie becomes weight, and situation about moving at cleaning to wash bakie causes high effort for.
Therefore, third embodiment of the present invention is the invention founded in view of described problem, it is provided that the easy heater of process, the continuous casting apparatus possessing this heater and continuous casing when a kind of bakie for use in continuous casting apparatus used for magnesium alloy carries out heating and can separating and washes.Hereinafter, the explanation of the concrete structure of third embodiment of the present invention is carried out.It should be noted that the premise of the continuous casting apparatus of the 3rd embodiment is to possess: the holding furnace that the motlten metal of magnesium alloy is kept；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.But, in the following description, omit explanation and the diagram of a part for said structure sometimes.
[continuous casting apparatus 31]
As shown in figure 11, continuous casting apparatus 31 is for casting continuously from the motlten metal (hereinafter referred to as " motlten metal ") of the magnesium alloy of not shown holding furnace supply via feeding molten metal pipe 32, and manufactures the mo(u)lding W of magnesium alloy.
As shown in Figure 11～Figure 13, continuous casting apparatus 31 possesses: accumulate the bakie 33 of motlten metal；The continuous casting mold 34 of casting molten metal；The not shown chiller that motlten metal is cooled down；By the mo(u)lding W of the magnesium alloy of casting to the draw-off gear 35 of horizontal direction (the arrow A direction illustrated in Figure 11) drawing；The heater 36 that bakie 33 is heated；The heater control portion 350 that heater 36 is controlled.
In the following description, on the basis of continuous casting apparatus 31, the direction represented by the arrow A illustrated in Figure 11 is referred to as front side, its rightabout side is referred to as rear side and illustrates.And, about left and right directions, on the basis of the situation from front side continuous casting apparatus 31, it is referred to as right side and left side illustrates.
As shown in figure 13, bakie 33 possesses: has peristome 38 on top and accumulates the casing 37 of motlten metal；By the bakie cover plate 316 (with reference to Figure 11) of peristome 38 obturation；The not shown mold installing plate of continuous casting mold 34 is installed on the front surface at casing 37；Bolt component 340.
As shown in Figure 14, Figure 15, casing 37 has the inner space 37a for accumulating motlten metal, accumulates the motlten metal from feeding molten metal pipe 32 supply.And, as shown in Figure 13～Figure 15, casing 37 is formed: make motlten metal supply motlten metal mouth 330 (referring specifically to Figure 13) to what the continuous casting mold 34 being arranged on not shown mold installing plate flowed into；Discharge the outlet 311 of motlten metal；The bottom wall part resettlement section 315 that the bottom wall part 324 (with reference to Figure 16) of heater 36 described later is received；The bolt component fixed part 311b that bolt component 340 is fixed.
As shown in figure 13, it is through hole, the bottom of front surface by casing 37 for motlten metal mouth 330.By this for motlten metal mouth 330, the motlten metal accumulated in the 37a of inner space is supplied to continuous casting mold 34.
The bottom of the right flank of the through casing of outlet 311 37, is after the casting is completed for the hole discharged by the motlten metal in the inner space 37a accumulating in casing 37.
It addition, outlet 311 is when casting, as shown in figure 15, the spigot 341 inserting bolt component 340 seals.Additionally, as shown in figure 15, the bottom surface 39 constituting casing 37 rolls tiltedly towards outlet 311, in order to be easily drained the motlten metal of accumulation.
As shown in figure 14, the position that is the most U-shaped and that extend to the right from the right flank of casing 37 of opening upward when bolt component fixed part 311b is to observe from side.
It addition, when the top of bolt component fixed part 311b is formed and observes from front and back otch 311c, 311c of substantially V shape.Further, make the stopper 343 of bolt component 340 be locked to this otch 311c, and bolt component 340 is fixed.
As shown in Figure 14 and Figure 15, bottom wall part resettlement section 315 is the hole formed towards front side from the back side of casing 37, houses the bottom wall part 324 (with reference to Figure 16) of heater 36 described later.
As shown in figure 11, mold installing plate (not shown) is the parts for installing continuous casting mold 34 in the front-surface side of casing 37.
As shown in figure 13, bolt component 340 has: the columned spigot 341 sealing outlet 311；The handle part 342 extended from the rear end of spigot 341.Handle part 342 is the position for the spigot 341 being inserted into outlet 311 carries out drawing.
It addition, as shown in figure 15, handle part 342 has stopper 343, and this stopper 343 extends along horizontal direction and is locked to the otch 311c of bolt component fixed part 311b.
As shown in Figure 11 and Figure 13, bakie cover plate 316 is by the component of peristome 38 obturation, prevents the motlten metal accumulating in the 37a of inner space from contacting with exogenous QI and the situation of oxidation occurs.
As shown in figure 11, continuous casting mold 34 is arranged on the mold installing plate (not shown) of bakie 33, is to carry out, for the motlten metal flowed into from bakie 33, the parts that cast.And, continuous casting mold 34 is formed stream (not shown), the cooling medium being used for enabling to spray from cooling medium (not shown) enters in continuous casting mold 34.
Chiller (not shown) is the device for being supplied to the stream (not shown) being formed on continuous casting mold 34 by the cooling mediums such as water, cooling gas.
As shown in figure 11, draw-off gear 35 is the device of the cylindrical member possessing rotation, will be positioned in the mo(u)lding W on the cylindrical member of rotation to horizontal direction drawing.
As shown in figure 11, heater 36 is device adjacent and that heat bakie 33 with bakie 33.As shown in figure 16, heater 36 possesses: sheathed heater 320；The wall portion 321 that this sheathed heater 320 is supported；The cover component 322 of the outer surface in covering wall portion 321.
Sheathed heater 320 is to possess spiral helicine heater in the inside of metal hollow pipe and fill the electric heater of the good insulant of conduction of heat, is accommodated in heater incorporating section 326 described later.It should be noted that in the present embodiment, as the structure for heating, use sheathed heater 320 to illustrate, but the present invention is not defined to this sheathed heater 320, can be heating wire etc..
Wall portion 321, for supporting sheathed heater 320, is preferably formed by heat-barrier material.And, as shown in Figure 16, Figure 17, wall portion 321 has: overlook the most U-shaped side of sidewall portion 323；It is formed at the bottom wall part 324 of the lower side of side of sidewall portion 323.
As shown in FIG. 16 and 17, side of sidewall portion 323 has bakie resettlement section 325, and this bakie resettlement section 325 is the space that can house bakie 33 in inside.Further, side of sidewall portion 323 houses bakie 33 in bakie resettlement section 325, and arranged opposite with the side of bakie 33.
As shown in FIG. 16 and 17, bottom wall part 324 is that the lower side from side of sidewall portion 323 extends to the position in bakie resettlement section 325.And, bottom wall part 324 is housed in the bottom wall part resettlement section 315 of the bakie 33 housed by bakie resettlement section 325, and arranged opposite with bottom surface 39.
It addition, side of sidewall portion 323 and bottom wall part 324 are in inner peripheral surface side, i.e. on the face arranged opposite with the side and bottom surface 39 of bakie 33, it are formed with the heater incorporating section 326 of storage sheathed heater 320, and receive sheathed heater 320.And, heater incorporating section 326 becomes the sheathed heater 320 of storage not from the degree of depth that inner peripheral surface is prominent.
Additionally, as shown in figure 16, the lower right-hand side at side of sidewall portion 323 is formed with outlet resettlement section 327, and this outlet resettlement section 327 is the space of outlet 311 grade for housing bakie 33.
As shown in FIG. 16 and 17, cover component 322 is the metal component covered by the outer peripheral face of side of sidewall portion 323 and bottom wall part 324 to prevent heat radiation.
As shown in figure 12, heater control portion 350 is for the structure being controlled the heating-up temperature of the sheathed heater 320 being arranged on heater 36, has: not shown molten metal temperature determination part；Not shown heater heating determination part；Storage part 352；Monitoring unit 351；Configuration part 353.
Not shown molten metal temperature determination part is such as laser detector etc., the temperature measuring the motlten metal accumulated in bakie 33 device exported to monitoring unit 351 by this motlten metal being measured to mensuration temperature information.
It addition, not shown electric heater heating determination part is such as thermocouple etc., the electric heater being measured the heating-up temperature of sheathed heater 320 and this being measured to measures the device that temperature information exports to configuration part 353.
Storage part 352 storage lodges in the design temperature i.e. motlten metal design temperature information of the motlten metal of bakie 33.
Whether monitoring unit 351 carries out measure the motlten metal temperature information measuring temperature from the motlten metal of not shown molten metal temperature determination part output is the supervision being stored in the motlten metal design temperature in the motlten metal design temperature information of storage part 352, and monitoring result exported to configuration part 353.
Configuration part 353, based on the monitoring result exported from monitoring unit 351, carries out the setting of the heating-up temperature of sheathed heater 320 in the way of becoming the motlten metal design temperature being stored in storage part 352.
It addition, the heater that configuration part 353 is fed back from not shown heater heating determination part output measures temperature information, suitably adjust the heating-up temperature of sheathed heater 320, it is to avoid the damage of the most thermally-induced bakie 33 of sheathed heater 320.
It follows that simply illustrate the using method of the continuous casting apparatus 31 of embodiment.
As shown in Figure 11 and Figure 13, flow into via the motlten metal of feeding molten metal pipe 32 supply and accumulate in the inner space 37a of bakie 33.Further, motlten metal flowing out to continuous casting mold 34 for motlten metal mouth 330 via bakie 33.
In continuous casting mold 34, except motlten metal is in addition to bakie 33 flows into, the cooling medium supplied from chiller (not shown) also enters via the not shown stream (not shown) being formed at continuous casting mold 34, cools down motlten metal and produce mo(u)lding W in continuous casting mold 34.
Further, since continuous casting mold 34 is continuous with the inner space 37a of bakie 33, therefore accumulating in the mo(u)lding W that the pressure of the motlten metal in the 37a of inner space acts in continuous casting mold 34, the mo(u)lding W in continuous casting mold 34 is forced out.
The mo(u)lding W cast out in continuous casting mold 34 is hardened and drawing in continuous casting mold 34 in the rear end continuous print mode with the mo(u)lding W of drawing by draw-off gear 35.Then, by after mo(u)lding W drawing in continuous casting mold 34, the motlten metal lodging in bakie 33 flows into again in continuous casting mold 34, casts continuously and produces a series of mo(u)lding W.
Additionally, in the present embodiment, utilize molten metal temperature determination part (not shown) to measure the temperature of the motlten metal in bakie 33 all the time, monitor whether to be in the situation in the range of motlten metal design temperature by monitoring unit 351 (with reference to Figure 12).Therefore, even if just in case becoming outside the scope of motlten metal design temperature, configuration part 353 also controls the heating-up temperature of the sheathed heater 320 of heater 36, thus maintains all the time and become the design temperature being stored in storage part 352.
It addition, heat up device 36 for the installation of bakie 33, as shown in figure 13, the rear side of bakie 33 is made to be housed in bakie resettlement section 325 towards moving in the bakie resettlement section 325 of heater 36.
By above installation, the sheathed heater 320 being bearing on the side of sidewall portion 323 of heater 36 is opposed with the side of bakie 33 and can heat.And, the sheathed heater 320 being bearing in the bottom wall part 324 of heater 36 is opposed with the bottom surface 39 of bakie 33 and can heat.
Above, illustrate structure and the using method of the continuous casting apparatus 31 of embodiment, but the continuous casting apparatus 31 according to embodiment, can be heated the side of bakie 33 or bottom surface 39 by heater 36, therefore, it is possible to maintain the temperature of the motlten metal accumulated in bakie 33.
It addition, according to the continuous casting apparatus 31 of embodiment, owing to possessing the heater 36 that bakie 33 is heated, the bakie 33 of non-built-in electric heater therefore can be used.
Further, since bakie 33 can separate with heater 36, therefore when washing bakie 33, it is possible to make bakie 33 separate from heater 36, and only bakie 33 is washed.
Therefore, bakie 33 without consider avoid electric heater and electric wiring by the situation of water-soaked, and, the movement at cleaning becomes easy, it is possible to increase clean property.
It addition, according to the wall portion 321 that sheathed heater 320 is supported of embodiment, owing to being formed by heat-barrier material, therefore, it is possible to the heating that suppression is produced by sheathed heater 320, it is possible to realize the raising of safety.
Additionally, according to the heater incorporating section 326 of embodiment, owing to keeping sheathed heater 320 in mode discontiguous with bakie 33, therefore when the installation of bakie 33, it is possible to avoid contact with and the state of affairs of breakage.And, the wall portion 321 of embodiment possesses cover component 322 due to face side outside, and therefore the heat of sheathed heater 320 is difficult to become separated in flight.
This concludes the description of the continuous casting apparatus 31 of embodiment, but the present application is not limited to the structure of continuous casting apparatus 31 of embodiment.Such as, in addition to the heater 36 of embodiment, it is also possible to also set up flat heater and arranged opposite with the front-surface side of bakie 33, the front surface of bakie 33 is heated.
It should be noted that, in embodiments, the continuous casting apparatus 31 using horizontal (horizontal type) to horizontal direction casting illustrates, but the invention is not limited in this, the continuous casting apparatus to vertical (vertical-type) of vertical direction casting also is able to the invention of application.
<the 4th embodiment>
Hereinafter, the 4th embodiment of the present invention is described with reference to Figure 18 and Figure 19.Hereinafter, first describe the object lesson of the prior art associated with the 4th embodiment of the present invention in detail, then carry out the explanation of concrete structure.
[object lesson of prior art]
In the past, in vertical continuous casting device, motlten metal imported by hole along the mold of tubular arranged in the way of above-below direction connection from the opening on top, and utilize to conduct oneself with dignity the mo(u)lding opening from bottom is discharged or drawing, be thus continuously manufactured by mo(u)lding.On the other hand, in horizontal continuous casting apparatus, from the opening of a side, motlten metal is imported the mold of the tubular arranged in the way of hole connects along horizontal direction, and supports and drawing mo(u)lding from the opening of the opposing party, be thus continuously manufactured by mo(u)lding.
When being compared with horizontal continuous casting apparatus by vertical continuous casting device, it is respectively present pluses and minuses, is used separately according to carrying out the requirement of scene that casts.
From the viewpoint of manufacturing efficiency, described vertical continuous casting device, horizontal continuous casting apparatus are applied under multiple scenes, therefore relevant to continuous casting apparatus technical research is carried out actively, especially with respect to the mold affecting greatly mo(u)lding, is just carrying out various research.
Such as, a kind of continuous casting mold is disclosed in list of references 5 (Japanese Unexamined Patent Publication 2006-110558 publication), wherein, the internal diameter casting mold continuously is formed towards the cone-shaped that casting direction broadens with predetermined angular, further, the material that be more than 0.7cal/cm sec DEG C (293W/m K) by pyroconductivity and yield stress is more than 250MPa is constituted.
The continuous casting mold recorded according to this list of references 5, play following effect, that is: when aluminum or aluminum alloy (following, to they are referred to " aluminium alloy ") is cast, it is possible to there is the mo(u)lding of good surface configuration with high production rate manufacture.
But, the technology that list of references 5 is recorded is the technology relevant to the continuous casting mold solving the intrinsic problem of aluminium alloy, is not the technology relevant to magnesium alloy.Therefore, even if the technology that list of references 5 is recorded to be simply applied to the continuous casting of magnesium alloy, the most also can not get the effect as during the casting continuously being applied to aluminium alloy.Specifically, if the technology that list of references 5 is recorded to be applied to the continuous casting of magnesium alloy, then become mo(u)lding surface after casting and form the result of deep concaveconvex shape.
Therefore, the 4th embodiment of the present invention provides a kind of whenever carrying out when the casting continuously of mo(u)lding that be made up of magnesium alloy, it is possible to produce continuous casting mold and the continuous casting apparatus of the mo(u)lding with good surface configuration.Hereinafter, the explanation of the concrete structure of the 4th embodiment of the present invention is carried out.It should be noted that the premise of the continuous casting apparatus of the 4th embodiment is to possess: the holding furnace that the motlten metal of magnesium alloy is kept；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.But, in the following description, omit explanation and the diagram of a part for said structure sometimes.
[continuous casting apparatus]
First, the structure of the continuous casting apparatus D of the continuous casting mold 41 of the present invention is possessed with reference to Figure 18 explanation.
It should be noted that, about continuous casting mold 41 and continuous casting apparatus D, illustrate in case of enumerating so-called horizontal (horizontal type), but the present invention can also be applied to continuous casting mold and the continuous casting apparatus of vertical (vertical-type).
Continuous casting apparatus D is to manufacture the device of the mo(u)lding W of magnesium alloy by horizontal continuous casting.Further, continuous casting apparatus D possesses: accumulate the bakie 420 of motlten metal M；The coupling member 47 linked with this bakie 420 and motlten metal M is sent to the direction of arrow；The ceramic nozzle 44 that the motlten metal M sent from this coupling member 47 is sent to the direction of arrow again；Carry out cooling down by the motlten metal M for sending from this ceramic nozzle 44 and be formed as the continuous casting mold 41 of mo(u)lding W；Mo(u)lding W for sending from this continuous casting mold 41 carries out the draw-off gear 430 of drawing.
Additionally, continuous casting apparatus D possesses not shown cooling water conveying pipe and lubricating oil conveying pipe, by these conveying pipes, import (with reference to Figure 19) by cooling down water and lubricating oil cooling water-supplying hole 45 and the lubricating oil supply hole 46 externally to continuous casting mold 41 described later.And, continuous casting apparatus D can also possess the holding furnace (not shown) keeping the motlten metal M from fusing stove supply and supply motlten metal pipe (not shown) from holding furnace to the motlten metal of bakie 420 supplying melting metal M.
[continuous casting mold]
It follows that continuous casting mold 41 is described with reference to Figure 19.
The motlten metal M imported to the direction of arrow from ceramic nozzle 44 is cooled down by continuous casting mold 41, manufactures the mo(u)lding W of the diameter of regulation.
Further, continuous casting mold 41 presents the generally a cylindrical shape of the internal diameter of the external diameter same size with the mo(u)lding W manufactured, and forms cooling water-supplying hole 45 and lubricating oil supply hole 46 (with reference to Figure 19 (a)).
It should be noted that multiple Component compositions can also be constituted by continuous casting mold 41.
The cooling water sent here from not shown cooling water conveying pipe is imported to continuous casting mold 41 surface and mo(u)lding W surface by described cooling water-supplying hole 45, thus cools down two components.And, the lubricating oil sent here from not shown lubricating oil conveying pipe is imported to mo(u)lding W surface by described lubricating oil supply hole 46, it is possible to suitably send mo(u)lding W.
Motlten metal M (mo(u)lding W) contacts with the inner peripheral surface 41a of continuous casting mold 41, sends to the direction of arrow simultaneously but it also may the radially inner side at this inner peripheral surface 41a arranges mold ring 43 (with reference to Figure 19 (b)).In this case, motlten metal M (mo(u)lding W) is sent to the direction of arrow while contacting with the inner peripheral surface 43a of mold ring 43.
It should be noted that about the structure of continuous casting mold, illustrate Figure 19 (a), (b) the two structure, but be not defined to this structure.
The part connected with mo(u)lding W in continuous casting mold 41 is made up of the material that the pyroconductivity at 20 DEG C is 10～150W/m K.
This part is made up of the material of the pyroconductivity (20 DEG C) of below 150W/m K, it is possible to prevent and the formation of the concaveconvex shape in mo(u)lding W quick refrigeration mo(u)lding W surface together.I.e., it is possible to produce the mo(u)lding W with good surface configuration.
On the other hand, this part is made up of the material of the pyroconductivity (20 DEG C) of more than 10W/m K, it is possible to avoid the cooling with mo(u)lding W to expend very much the decline (decline of productivity ratio) of the casting speed that the time is caused together.And, this part is made up of the material of the pyroconductivity (20 DEG C) of more than 10W/m K, it is possible to that desuperheating when avoiding mo(u)lding W to solidify is insufficient and the chapping of the surface that produces.
It should be noted that the part connected with mo(u)lding W is preferably made up of the material that the pyroconductivity at 20 DEG C is 100～150W/m K.
This part is made up of the material of the pyroconductivity (20 DEG C) of more than 100W/m K, thus, is promptly cooled down by mo(u)lding W, it is possible to increase casting speed, it can be ensured that sufficiently productivity ratio.
At this; the part connected with mo(u)lding W is that the inner peripheral surface 41a part of the continuous casting mold 41 contacted with mo(u)lding W (or motlten metal M) when casting is (when arranging mold ring; inner peripheral surface 43a part); specifically, it is away from the part that inner peripheral surface 41a (inner peripheral surface 43a) is 2mm contacted with mo(u)lding W to radial outside.
That is, at least this part in continuous casting mold 41 is made up of described material, it is possible to play described effect.In other words, as long as the part being made up of described material in continuous casting mold 41 is more than 2mm to radial outside away from the inner peripheral surface 41a (inner peripheral surface 43a) contacted with mo(u)lding W.
As long as it should be noted that the part at least connected with mo(u)lding W in continuous casting mold 41 is made up of described material, it is of course also possible to be that the entirety of continuous casting mold 41 is made up of described material.
It should be noted that about the kind (metal species) of concrete material, and it is not particularly limited, as long as meeting described pyroconductivity.E.g. rustless steel, lead, carbon etc..
About continuous casting apparatus D, component beyond continuous casting mold 41 is also not particularly limited, as long as using the component of following such structure.
Bakie 420 is the groove of the motlten metal M accumulating magnesium alloy.
Ceramic nozzle 44 is the nozzle being made up of the pottery with thermostability, is supplied to continuous casting mold 41 by the motlten metal M in bakie 420.Further, bakie 420 and continuous casting mold 41 are linked by ceramic nozzle 44 via coupling member 47.It should be noted that about coupling member 47, as long as constituting by having the pottery etc. of thermostability.
Draw-off gear 430 is the device that the mo(u)lding W sent from continuous casting mold 41 carries out drawing, such as, rotates by motor (not shown).Further, draw-off gear 430 is multiple in the configuration of the downside of mo(u)lding W in the way of laying.
Motlten metal M is metal melted in fusing stove (not shown), is made up of magnesium alloy.And, mo(u)lding W is that the continuous casting mold 41 by continuous casting apparatus D carries out casting and the concretionary slab of motlten metal M (ingot bar), such as, manufactures in the way of presenting the pole shape of a diameter of tens～about 100mm.
[action of continuous casting apparatus]
It follows that explanation possesses the action of the continuous casting apparatus D of the continuous casting mold 410 of the present invention.
As shown in figure 18, in continuous casting apparatus D, the motlten metal M of the magnesium alloy lodging in bakie 420 passes through ceramic nozzle 44 from bakie 420 via coupling member 47, is directed in continuous casting mold 410.Then, motlten metal M is the desuperheating via inner peripheral surface 41a in continuous casting mold 410, starts solidification (with reference to Figure 19 (a)) from the face (surface) contacted with inner peripheral surface 41a.
Here, between the inner peripheral surface 41a of the surface of motlten metal M (mo(u)lding W) and continuous casting mold 410 (mold bulk 41), form lubricating film coated by the lubricating oil that supplies from lubricating oil supply hole 46.And, by draw-off gear 430, mo(u)lding W is moved with the speed of regulation along the inner peripheral surface 41a of continuous casting mold 410 (mold bulk 41) with the speed drawing specified, the mo(u)lding W therefore solidified.Further, mo(u)lding W is carried out forcing cooling by the cooling water supplied from cooling water-supplying hole 45.
Via above action, by continuous casting apparatus D, cast divine force that created the universe W continuously.
It should be noted that about other the casting condition etc. do not expressed, as long as using known casting condition etc..
[embodiment]
It follows that the comparative example of the embodiment of the important document meeting the present invention with the important document being unsatisfactory for the present invention is compared, specifically it is illustrated.
(continuous casting mold)
As continuous casting mold, prepare following three mold.
Continuous casting mold No.1
Mold title: Copper casting mould
Mold material: chromium-copper
Pyroconductivity: 376 (W/m K)
Structure: the structure shown in Figure 19 (a), mold bulk 41 is made up of above-mentioned material.
Continuous casting mold No.2
Mold title: carbon sleeve mold
Mold material: carbon
Pyroconductivity: 120 (W/m K)
Structure: the structure shown in Figure 19 (b), mold ring 43 is made up of above-mentioned material.It should be noted that mold bulk 41 is made up of Copper casting mould.
Continuous casting mold No.3
Mold title: rustless steel mold
Mold material: SUS304
Pyroconductivity: 16 (W/m K)
Structure: the structure shown in Figure 19 (a), mold bulk 41 is made up of above-mentioned material.
(motlten metal and mo(u)lding)
Magnesium alloy JIS " MC2 " alloy (=ASTM " AZ91 ") is used as motlten metal.And, the mo(u)lding of manufacture a diameter of
(evaluation)
For the mo(u)lding manufactured, utilize the entity microscope observing surface configuration (face shaping shown in Figure 25) relative to the positive side of casting direction.And, use the cross section of observation by light microscope and casting direction equidirectional, be i.e. 4mm (the cross section micro-shape shown in Figure 25) away from upper end.This observed result (photo) is as shown in figure 25.
(research of result)
The pyroconductivity of continuous casting mold No.1 (Copper casting mould) has exceeded the higher limit that present invention provide that.Therefore, productivity ratio is bad, and the surface configuration of mo(u)lding is poor.
The pyroconductivity of continuous casting mold No.2 (carbon sleeve mold) meets the scope that present invention provide that.Therefore, productivity ratio is good, and the surface configuration of mo(u)lding is good.
The pyroconductivity of continuous casting mold No.3 (rustless steel mold) meets the scope that present invention provide that.Therefore, productivity ratio is good, and the surface configuration of mo(u)lding is good.But, compared with No.2, productivity ratio is slightly worse.
It should be noted that when the casting speed of continuous casting mold No.1 is 1, continuous casting mold No.2 is 0.58, continuous casting mold No.3 is 0.27.
That is, according to the present invention, when casting the mo(u)lding being made up of magnesium alloy continuously, it is ensured that practical productivity ratio can be applied to, and the mo(u)lding with good surface configuration can be manufactured.
<the 5th embodiment>
Hereinafter, the 5th embodiment of the present invention is described with reference to Figure 20～Figure 24.Hereinafter, first describe the object lesson of the prior art associated with the 5th embodiment of the present invention in detail, then, carry out the explanation of concrete structure.
[object lesson of prior art]
In the past, in horizontal (horizontal type) continuous casting apparatus, as shown in conventional list of references 6 (Japanese Unexamined Patent Publication 11-170014 publication), the aperture position by adjusting the refractory body nozzle to continuous casting mold guiding motlten metal or shape are attempted, and make the uniformity of temperature profile within continuous casting mold, thus reduce the danger outside surface stacking (inverse segregation) or fracture.
But, in casting continuously, utilizing draw-off gear during continuous casting mold drawing mo(u)lding, this continuous casting mold is pulled to casting direction and is tilted, and mo(u)lding is sometimes to be drawn in the acclivitous state of above-below direction or right and left.When such mo(u)lding has angle and is drawn, mo(u)lding can be cast deviously, or the position on the top of conveying roller that the position of the lower end of mo(u)lding possesses with draw-off gear is inconsistent, therefore there is the problem that mo(u)lding goes upward to conveying roller.And, when mo(u)lding described above has angle and is drawn, the gap between continuous casting mold inside and mo(u)lding can produce deflection, accordingly, there exist the Temperature Distribution within continuous casting mold and becomes uneven and that the quality of mo(u)lding declines problem.
Therefore, even if the 5th embodiment of the present invention provides a kind of power tilted when by draw-off gear drawing mo(u)lding to put on the continuous casting apparatus that continuous casting mold is also unaffected.Hereinafter, the explanation of the concrete structure of the 5th embodiment of the present invention is carried out.It should be noted that the premise of the continuous casting apparatus of the 5th embodiment is to possess: the holding furnace that the motlten metal of magnesium alloy is kept；The motlten metal supplied from holding furnace is accumulated therein, and the bakie that the motlten metal of accumulation is supplied continuously to continuous casting mold；It is arranged between holding furnace and bakie the feeding molten metal pipe supplied by motlten metal to bakie；The heater that bakie is heated；The continuous casting mold being connected with bakie；The conveying roller mo(u)lding to sending from continuous casting mold is utilized to carry out the draw-off gear of drawing.But, in the following description, omit explanation and the diagram of a part for said structure sometimes.
[continuous casting apparatus]
As shown in figure 20, continuous casting apparatus 51 utilizes continuous casting mold 550 to make the motlten metal M of metal solidify and continuous cast divine force that created the universe W (mo(u)lding).At this as shown in figure 20, continuous casting apparatus 51 possesses holding furnace 510, bakie 520, feeding molten metal pipe 530, pressue device 540, continuous casting mold 550, draw-off gear 560, fixed plate 570, lowering or hoisting gear 580.
Motlten metal M is to melt in fusing stove (not shown) and to the motlten metal of holding furnace 510 supply, such as, be made up of magnesium alloy or aluminium alloy etc..And, as shown in figure 20, mo(u)lding W is by the continuous casting molten metal M of continuous casting apparatus 51 and to make its concretionary slab (ingot bar), such as, be made up of the pole of a diameter of about tens mm.As shown in figure 20, mo(u)lding W is pulled to casting direction by the conveying roller 563 of draw-off gear 560, is thus pulled out from the mold face of continuous casting mold 550.Transmitted by conveying roller 563 from the mo(u)lding W of mold face pull-out, and forcibly carried out cooling twice by the cooling water discharged from chiller (not shown).Then, mo(u)lding W is pulled by conveying roller 563 and carries to determined location, and is cut into desired length.
The motlten metal M supplied from fusing stove (not shown) is temporarily accumulated by holding furnace 510 with the state being incubated into the temperature of regulation.As shown in figure 20, holding furnace 510 is shaped generally as hermetic container shape.As shown in figure 20, holding furnace 510 is the container of the bottomed cylindrical accumulating motlten metal M, such as, be made up of the container that internal diameter is 1m, the degree of depth is 1.5m and capacity is about 350kg.Side wall upper part in this holding furnace 510 is provided with the supply mouth (not shown) of inactive gas.
As shown in figure 20, the pressue device 540 pressurizeing motlten metal M is installed in holding furnace 510.And, in the space between surface and the end face of this holding furnace 510 of the motlten metal M in holding furnace 510, inject using the state of compression and be filled with the inactive gas as blanketing gas avoiding motlten metal M that oxidation occurs.Therefore, the holding furnace 510 being provided with pressue device 540 becomes gas-pressurization type holding furnace.
Bakie 520 is the container temporarily accumulated with the state of insulation by the motlten metal M supplied from holding furnace 510.And, internally installed at bakie 520 has the filter (not shown) filtered the motlten metal M in this bakie 520 and separated by useless field trash.And, on bakie 520 and in the bottom of sidewall, it is formed with two motlten metal M is discharged and is used for supplying motlten metal mouth H to what continuous casting mold 550 supplied1(with reference to Figure 22).And, on bakie 520 and be formed for motlten metal mouth H1Sidewall on be formed with jut 520a for fixing locking fixed plate 570 (with reference to Figure 22 and Figure 23).It should be noted that for the motlten metal M in this bakie 520, as shown in figure 20, owing to this bakie 520 connects with holding furnace 510 via feeding molten metal pipe 530, thus motlten metal M becomes the state pressurizeed by pressue device 540.
Motlten metal M in holding furnace 510 is supplied by feeding molten metal pipe 530 to bakie 520.As shown in figure 20, one end side is installed on holding furnace 510 to feeding molten metal pipe 530, and side, the other end is installed on bakie 520.Feeding molten metal pipe 530 such as stainless steel tube or steel pipe by internal diameter is 80mm is constituted.
Pressue device 540 pressurizes to holding furnace 510 is internal.Pressue device 540 is such as made up of the device utilizing compressed gas to press the surface of the motlten metal M in holding furnace 510.The pressurization value of pressue device 540 according to metal species of motlten metal M etc. and different, for example, 1～100kPa.
Continuous casting mold (mold) 550 is to from the confession motlten metal mouth H of bakie 5201The motlten metal M being supplied in mould carries out cooling down and being sent, and is thus shaped to the cooling mold of the shape of regulation.Such as shown in Figure 21, continuous casting mold 550 is shaped generally as tubular to cast bar-shaped mo(u)lding W continuously.And, continuous casting mold 550 is such as made up of copper, aluminium alloy, rustless steel or the graphite that pyroconductivity is high, selects according to the metal species etc. of motlten metal M.
As shown in Figure 21 and Figure 22, continuous casting mold 550 possesses two at this, and its upstream side opening supplies motlten metal mouth H with bakie 5201Connection.It should be noted that continuous casting mold 550 such as can be by being folded in the confession motlten metal mouth H of this continuous casting mold 550 and bakie 5201Between mold mounting disc (not shown), come be connected with bakie 520.And, continuous casting mold 550 as shown in figure 22, is also embedded into the through hole H being formed at fixed plate 5702In, as shown in figure 21, by bolt (retention mechanism) B1It is anchored on this fixed plate 570.
Continuous casting mold 550 is provided with such as: the chiller (not shown) being made up of the water collar that this continuous casting mold 550 and mo(u)lding W are the most once cooled down or the cooling water nozzle device etc. that carries out cooling twice；The feeding lubricating device (not shown) supplying lubricant to the casting plane of continuous casting mold 550 and prevent the casting plane of mo(u)lding W from sintering.
Draw-off gear (casting machine main body) 560 via continuous casting mold 550 from bakie 520 drawing mo(u)lding W.As shown in Figure 20 and Figure 21, draw-off gear 560 possesses: the chassis body 561 being made up of correct frame post 561A, left frame trestle 561B, right scaffold 562A and left scaffold 562B；Conveying roller 563；Board stop 564.
As shown in Figure 21 and Figure 22, correct frame post 561A and left frame trestle 561B is separated from one another and is arranged on the both sides of the continuous casting mold 550 being connected with bakie 520.And, as shown in Figure 21 and Figure 22, right scaffold 562A and left scaffold 562B is respectively arranged on correct frame post 561A and left frame trestle 561B, and extends along horizontal direction and formed.And, as shown in figure 21, conveying roller 563 arranges multiple between right scaffold 562A and left scaffold 562B, the drawing direction setting separated from one another along mo(u)lding W.Owing to draw-off gear 560 possesses this structure, and as shown in figure 21, by conveying roller 563, the mo(u)lding W sent from continuous casting mold 550 is carried out drawing.It should be noted that correct frame post 561A and left frame trestle 561B, right scaffold 562A and left scaffold 562B, board stop 564 are made up of the material of high rigidity respectively.
It is U-shaped that board stop 564 is formed as cross section as shown in figure 22, and fixed plate 570 is preferably engaged with the state at clamping two ends by board stop 564.So, continuous casting apparatus 51 is U-shaped by board stop 564 is formed as cross section, and can easily fixed disassembly plate 570.
Fixed plate (mold support plate) 570 engages with continuous casting mold 550 and is fixed relative to draw-off gear 560 by this continuous casting mold 550.As shown in Figure 21 and Figure 22, fixed plate 570 is formed as tabular, configures in the face of the joint face connecting continuous casting mold 550 of bakie 520.And, as shown in Figure 21 and Figure 22, fixed plate 570 is formed with the through hole H making continuous casting mold 550 embed2.Further, continuous casting mold 550, as shown in Figure 21 and Figure 22, is embedded through hole H by fixed plate 5702, and its two ends are locked to the board stop 564 of draw-off gear 560, utilize bolt (retention mechanism) B2Fasten.So, continuous casting apparatus 51 engages fixed plate 570 in the board stop 564 be located at draw-off gear 560, and continuous casting mold 550 embeds the through hole H of this fixed plate 5702, it is possible to firmly fix this continuous casting mold 550 relative to draw-off gear 560.
It addition, as shown in Figure 21 and Figure 22, fixed plate 570 is also by bolt (retention mechanism) B3And tighten together with the jut 520a of bakie 520.And, as it has been described above, to the through hole H of fixed plate 5702The continuous casting mold 550 embedded is also by bolt (retention mechanism) B1And tighten together with fixed plate 570.Like this, fixed plate 570 is fastened by continuous casting apparatus 51 with bakie 520, and is fastened with fixed plate 570 by continuous casting mold 550, thus, bakie 520, continuous casting mold 550, draw-off gear 560, fixed plate 570 are integrally forming, and can firmly fix.
Fixed plate 570 is preferably made up of rustless steel or steel.Like this, in continuous casting apparatus 51, the metal of the intensity having regulation by utilization forms fixed plate 570, and make by during draw-off gear 560 drawing mo(u)lding W apply power disperse further to draw-off gear 560 side, thus prevent continuous casting mold 550 from tilting further and mo(u)lding W with situation about being drawn in the acclivitous state of above-below direction or right and left.
Lowering or hoisting gear 580 makes bakie 520 lift along above-below direction.Lowering or hoisting gear 580 as shown in figure 20, is arranged in mounting portion 560a of chassis body 561, and is placed with bakie 520 at an upper portion thereof.Further, lowering or hoisting gear 580 is by making bakie 520 lift, and it is involutory with the position of the above-below direction of draw-off gear 560 to carry out the continuous casting mold 550 being installed on bakie 520.
Possess the continuous casting apparatus 51 of above structure by make continuous casting mold 550 be locked to draw-off gear 560 fixed plate 570 engage, and continuous casting mold 550 can be fixed relative to draw-off gear 560.Thus, in continuous casting apparatus 51, owing to continuous casting mold 550 is fixed on draw-off gear 560 via fixed plate 570, so that by draw-off gear 560 drawing mo(u)lding W time apply power to draw-off gear 560 side disperse, prevent continuous casting mold 550 from tilting and mo(u)lding W with situation about being drawn in the acclivitous state of above-below direction or right and left.
Therefore, according to continuous casting apparatus 51, by using fixed plate 570 to be fixed relative to draw-off gear 560 by continuous casting mold 550, even if being therefore applied with, when by draw-off gear 560 drawing mo(u)lding W, the power making continuous casting mold 550 tilt, this continuous casting mold 550 is also unaffected.Thus, continuous casting apparatus 51 can carry out the position involutory (level is involutory) of continuous casting mold 550 and draw-off gear 560 accurately, therefore, it is possible to make the uniformity of temperature profile of the mo(u)lding W within continuous casting mold 550, it is possible to increase the quality of the mo(u)lding W of manufacture.
Hereinafter, with reference to Figure 23 and Figure 24, the order that the position employing fixed plate 570 of continuous casting apparatus 51 is involutory is simplyd illustrate.First as shown in Figure 23 (a), by with bakie 520 faced by the way of configure fixed plate 570, as shown in Figure 23 (b), at bakie 520 for motlten metal mouth H1Through hole H with fixed plate 5702Position consistency state under, utilize bolt B3Both are fastened.Then, as shown in Figure 23 (c), continuous casting mold 550 is made to pass the through hole H of fixed plate 5702And it is installed on the confession motlten metal mouth H of bakie 5201, pass through bolt B1Continuous casting mold 550 and fixed plate 570 are fastened.
It follows that as shown in Figure 24 (a), by lowering or hoisting gear 580 (not shown), make bakie 520 move in the way of making the lower end of the opening of continuous casting mold 550 become the position of horizontal line L.Here, horizontal line L is as shown in the single dotted broken line of Figure 20, represent the dummy line of the transport road extraction along the mo(u)lding W formed by multiple conveying rollers 563.Further, as shown in Figure 24 (b), bolt B is passed through2Fixed plate 570 is anchored on board stop 564.By above order, it is possible to continuous casting mold 550, fixed plate 570, draw-off gear 560 are fixed into and are integrated, and it is involutory with the position of draw-off gear 560 to carry out continuous casting mold 550.
If casting the most continuously, the most as shown in figure 20, it is consistent with the transport road of conveying roller 563 i.e. horizontal line L from the lower end of the mo(u)lding W of continuous casting mold 550 drawing, therefore, it is possible to the suppression phenomenon that is bent upwards at above-below direction or right and left of mo(u)lding W, mo(u)lding W are multiplied by the phenomenon of conveying roller 563.And, in the past, when from continuous casting mold 550 drawing mo(u)lding W, continuous casting mold 550 self is pulled along casting direction (Figure 20) and is tilted, thus the angle of the mo(u)lding W being drawn changes, thus, continuous casting mold 550 is internal and gap (clearance) between mo(u)lding W is it some times happens that deflection.But, as the continuous casting apparatus 51 of the present invention, by continuous casting mold 550, fixed plate 570, draw-off gear 560 are integrally fixed, and be prevented from continuous casting mold 550 self along casting direction (Figure 20) by pulling the situation of run-off the straight.Therefore, according to the continuous casting apparatus 51 of the present invention, compared with prior art, it is possible to increase the quality of mo(u)lding W.
According to above such continuous casting apparatus and continuous casing, it is possible to stably carry out the continuous casting of magnesium alloy.And, by by the way of carry out an invention and embodiment, specifically understand continuous casting apparatus and the continuous casing of the present invention, but the purport of the present invention is not defined to above-mentioned record, it is necessary to the record of scopes based on claims is widely interpreted.And, the various changes that carry out based on above-mentioned record, change etc. are also contained in the purport of the present invention certainly.
[symbol description]
11 continuous casting apparatus
12 holding furnaces
121 holding furnace main bodys
122 peristomes
123 holding furnace cover plates
123a providing holes
12a is for motlten metal mouth
13 pressue devices
131 compressors
132 control device
133 power supplys
134 pressurized gas supply portions
14 feeding molten metal pipes
14a holding furnace side opening portion
14b bakie side opening portion
14c filter
15 bakies
151 casings
152 peristomes
153 bakie cover plates
153a laser light mechanism
153b visuognosis mechanism
154 for motlten metal mouth
155 outer walls
16 mold mounting discs
17 continuous casting molds
18 draw-off gears
18a, 18b roller
19 motlten metal paths
110 laser detectors
CL centrage
G inactive gas
M motlten metal
W mo(u)lding
S1 laser determination step
S2 quantity delivered regulating step
1410 horizontal continuous casting apparatus
1420 holding furnaces
1430 pressue devices
1440 feeding molten metal pipes
1450 bakies
1451 peristomes
1452 bakie cover plates
1460 mold mounting discs
1470 continuous casting molds
1480 draw-off gears
1500 continuous casting apparatus
1501 holding furnaces
1502 continuous casting molds
1503 continuous casting mold cover plates
1504 microwave motlten metal face level determination devices
1505 transmission and reception units
21 feeding molten metal pipes
22 for motlten metal pipe portion
23 base end parts
24 first bending parts
25 rakes
26 second bending parts
27 leading sections
28 holding sections
29 lip portions
210 insertion sections
221 continuous casting apparatus
231 holding furnaces
241 pressue devices
251 bakies
261 continuous casting molds
271 draw-off gears
31 continuous casting apparatus
33 bakies
34 continuous casting molds
35 draw-off gears
36 heaters
37 inner spaces
320 sheathed heaters
321 wall portions
322 cover components
350 heater control portions
41 continuous casting molds (mold)
The inner peripheral surface of 41a mold bulk
43 mold rings
The inner peripheral surface of 43a mold ring
44 ceramic nozzles
45 cooling water-supplying hole
46 lubricating oil supply holes
47 coupling members
420 bakies
430 draw-off gears
D continuous casting apparatus
51 continuous casting apparatus
510 holding furnaces
520 bakies
520a jut
530 feeding molten metal pipes
540 pressue devices
550 continuous casting molds
560 draw-off gears
561 chassis body
560a mounting portion
561A correct frame post
561B left frame trestle
The right scaffold of 562A
The left scaffold of 562B
563 conveying rollers
564 board stops
570 fixed plates (mold support plate)
580 lowering or hoisting gears
B1、B2、B3Bolt (retention mechanism)
H1For motlten metal mouth
H2Through hole

Claims (23)

1. a continuous casting apparatus, it possesses:
Holding furnace, the motlten metal of magnesium or magnesium alloy is kept by it；
Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；
Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Heater, described bakie is heated by it；
Described continuous casting mold, it is connected with described bakie；
Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing,
Described continuous casting apparatus is characterised by having:
Laser detector, it is arranged on the top of described bakie, and measures the motlten metal face height of motlten metal in this bakie；
Bakie cover plate, the peristome on the top of its inaccessible described bakie, and have make the laser light launched from described laser detector laser light mechanism and can to carrying out the visuognosis mechanism of visuognosis in described bakie,
Described heater has:
Wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；
Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface,
Described wall portion has:
Side of sidewall portion, it is U-shaped under being formed as overlooking, and houses described bakie in inside；
Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie,
Further, there is in the bottom of described bakie the bottom wall part resettlement section housing described bottom wall part,
By enable the forwards movement of described bakie make described bakie and described wall part from.
Continuous casting apparatus the most according to claim 1, it is characterised in that
The heat resistant glass plate formed by heat resistant glass that partially or fully uses at described bakie cover plate is used as described laser light mechanism and described visuognosis mechanism.
Continuous casting apparatus the most according to claim 1 and 2, it is characterised in that
In the position leaving more than 500mm from the motlten metal face of described motlten metal, described laser detector is set.
4. a continuous casing, the method uses the continuous casting apparatus according to any one of claim 1～3 flatly to pull out magnesium or the mo(u)lding of magnesium alloy and cast, it is characterised in that
Including:
Utilize described laser detector via the laser determination step of the motlten metal face height of described bakie cover plate mensuration motlten metal；
According to the motlten metal face height measured in described laser determination step, regulate the quantity delivered regulating step of the quantity delivered of the described motlten metal supplied from described holding furnace,
In described quantity delivered regulating step,
When a diameter of more than 85mm of the described mo(u)lding pulled out from described continuous casting mold, described quantity delivered is regulated in the way of the described motlten metal face height that measured by the described laser detector centrage away from described continuous casting mold becomes more than 350mm
The diameter of the described mo(u)lding pulled out from described continuous casting mold less than 85mm time, in the way of the described motlten metal face height that measured by the described laser detector centrage away from described continuous casting mold becomes more than 300mm, regulate described quantity delivered.
5. a continuous casting apparatus, it possesses:
Holding furnace, the motlten metal of magnesium or magnesium alloy is kept by it；
Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；
Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Heater, described bakie is heated by it；
Described continuous casting mold, it is connected with described bakie；
Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing,
Described continuous casting apparatus is characterised by,
Described feeding molten metal pipe possesses:
For motlten metal pipe portion, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Holding section, it is located at described for motlten metal pipe portion and make this confession motlten metal pipe portion engage with described holding furnace,
Described have for motlten metal pipe portion: hangs down in described holding furnace and accepts the base end part of the described motlten metal sent by pressue device；The rake making described motlten metal move continuously with described base end part via the first bending part；Continuously and hang down in described bakie with described rake via the second bending part and spray the leading section of described motlten metal,
Described rake is inclined to rise towards described second bending part side from described first bending part side, and its angle of inclination is with respect to the horizontal plane 1～10 degree,
Described holding section has lip portions, and this lip portions is arranged on described base end part, and dismounts freely relative to the snap fastener being arranged on the holding furnace cover plate covered by the peristome of described holding furnace,
Described heater has:
Wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；
Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface,
Described wall portion has:
Side of sidewall portion, it is U-shaped under being formed as overlooking, and houses described bakie in inside；
Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie,
Further, there is in the bottom of described bakie the bottom wall part resettlement section housing described bottom wall part,
By enable the forwards movement of described bakie make described bakie and described wall part from.
Continuous casting apparatus the most according to claim 5, it is characterised in that
Described pressue device is the pump possessing motlten metal stream, possesses the insertion section sending mouth inserting described motlten metal stream in the way of dismounting freely in the end of described base end part.
7. according to the continuous casting apparatus described in claim 5 or 6, it is characterised in that
At least one of surrounding on the length direction in described confession motlten metal pipe portion is covered by heater.
8. according to the continuous casting apparatus described in claim 5 or 6, it is characterised in that
Described confession motlten metal pipe portion is made up of the pipe being formed continuously between described base end part, described first bending part, described rake, described second bending part and this each several part of described leading section.
9. according to the continuous casting apparatus described in claim 5 or 6, it is characterised in that
At least one party in described described first bending part for motlten metal pipe portion and described second bending part is formed as arc-shaped.
10. a continuous casting apparatus, it possesses:
Holding furnace, the motlten metal of magnesium or magnesium alloy is kept by it；
Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；
Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Heater, described bakie is heated by it；
Described continuous casting mold, it is connected with described bakie；
Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing,
Described continuous casting apparatus is characterised by,
Described heater has:
Wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；
Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface,
Described wall portion has:
Side of sidewall portion, it is U-shaped under being formed as overlooking, and houses described bakie in inside；
Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie,
Further, there is in the bottom of described bakie the bottom wall part resettlement section housing described bottom wall part,
By enable the forwards movement of described bakie make described bakie and described wall part from.
11. continuous casting apparatus according to claim 10, it is characterised in that
Described wall portion has groove portion on the face opposed with the side and bottom surface of described bakie,
Described electric heater is arranged in described groove portion.
12. according to the continuous casting apparatus described in claim 10 or 11, it is characterised in that
Being also equipped with heater control portion, this heater control portion controls by the heating-up temperature of described heating devices heat to accumulate in the way of the motlten metal in described bakie becomes design temperature.
13. continuous casting apparatus according to claim 12, it is characterised in that
Described heater control portion possesses:
Molten metal temperature determination part, it measures the temperature of the motlten metal accumulated in described bakie, and exports motlten metal mensuration temperature information；
Storage part, its storage accumulates in the design temperature i.e. motlten metal design temperature information of the motlten metal in described bakie；
Monitoring unit, it monitors that described motlten metal measures the motlten metal of temperature information and measures the motlten metal design temperature whether temperature is the described motlten metal design temperature information being stored in described storage part, and exports monitoring result；
Configuration part, it is according to described monitoring result, sets the heating-up temperature of described electric heater in the way of the motlten metal design temperature of the described motlten metal design temperature information making the temperature accumulating in the motlten metal in described bakie become to be stored in described storage part.
14. 1 kinds of continuous casings, the method uses the continuous casting apparatus described in claim 13 to manufacture the mo(u)lding of magnesium alloy, it is characterised in that
Described molten metal temperature determination part is utilized to measure the temperature of the motlten metal accumulated in described bakie,
Described motlten metal measures whether temperature is the described motlten metal design temperature being stored in described storage part to utilize described monitoring unit to monitor,
Utilize described configuration part according to the described monitoring result of described monitoring unit, in the way of the motlten metal design temperature of the described motlten metal design temperature information making the temperature accumulating in the motlten metal in described bakie become to be stored in described storage part, set the heating-up temperature of described electric heater.
15. 1 kinds of continuous casting apparatus, it possesses:
Holding furnace, the motlten metal of magnesium or magnesium alloy is kept by it；
Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；
Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Heater, described bakie is heated by it；
Described continuous casting mold, it is connected with described bakie；
Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing,
Described continuous casting apparatus is characterised by,
The part at least connected with described mo(u)lding in described continuous casting mold is made up of the material that the pyroconductivity at 20 DEG C is 10～150W/m K,
Described heater has:
Wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；
Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface,
Described wall portion has:
Side of sidewall portion, it is U-shaped under being formed as overlooking, and houses described bakie in inside；
Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie,
Further, there is in the bottom of described bakie the bottom wall part resettlement section housing described bottom wall part,
By enable the forwards movement of described bakie make described bakie and described wall part from.
16. continuous casting apparatus according to claim 15, it is characterised in that
The part at least connected with described mo(u)lding in described continuous casting mold is made up of the material that the pyroconductivity at 20 DEG C is 100～150W/m K.
17. 1 kinds of continuous casting apparatus, it possesses:
Holding furnace, the motlten metal of magnesium or magnesium alloy is kept by it；
Bakie, the described motlten metal supplied from described holding furnace is accumulated in inside, and is supplied continuously to continuous casting mold by the described motlten metal accumulated by it；
Feeding molten metal pipe, it is arranged between described holding furnace and described bakie and is supplied to described bakie by described motlten metal；
Heater, described bakie is heated by it；
Described continuous casting mold, it is connected with described bakie；
Draw-off gear, it utilizes the conveying roller mo(u)lding to sending from described continuous casting mold to carry out drawing,
Described continuous casting apparatus is characterised by,
Described continuous casting apparatus possesses fixed plate, and this fixed plate connects the joint face configuration of described continuous casting mold in the face of described bakie, and engages with described continuous casting mold and be fixed on described draw-off gear,
Described heater has:
Wall portion, its side being arranged in described bakie and lower section, and opposed with the side of described bakie and bottom surface；
Electric heater, it supports by described wall portion, and opposed with the side of described bakie and/or bottom surface,
Described wall portion has:
Side of sidewall portion, it is U-shaped under being formed as overlooking, and houses described bakie in inside；
Bottom wall part, it extends in the lateral described side of sidewall portion in the bottom of described side of sidewall portion, and opposed with the bottom surface of described bakie,
Further, there is in the bottom of described bakie the bottom wall part resettlement section housing described bottom wall part,
By enable the forwards movement of described bakie make described bakie and described wall part from.
18. continuous casting apparatus according to claim 17, it is characterised in that
Described draw-off gear possesses:
Correct frame post and left frame trestle, they are arranged on the both sides of the described continuous casting mold being connected with described bakie away from each other；
Right scaffold and left scaffold, they are respectively arranged on described correct frame post and described left frame trestle, and extend along horizontal direction；
Multiple described conveying rollers, they drawing direction along described mo(u)lding between described right scaffold and described left scaffold leave setting；
Board stop, it is respectively provided with on described correct frame post and described left frame trestle, and engages described fixed plate between described correct frame post and described left frame trestle,
Described fixed plate is formed with the through hole corresponding with the external diameter of described continuous casting mold, has been embedded in described continuous casting mold at this through hole, and the two ends of this fixed plate are locked to described board stop.
19. continuous casting apparatus according to claim 18, it is characterised in that
It is U-shaped that described board stop is formed as cross section,
Described fixed plate is locked to described board stop with the state that two ends are held.
20. continuous casting apparatus according to claim 18, it is characterised in that
Described bakie possesses the jut prominent to described fixed plate side,
Described fixed plate is tightened together with described jut by retention mechanism,
Described continuous casting mold embeds described through hole, and is tightened together with described fixed plate by retention mechanism.
21. continuous casting apparatus according to claim 19, it is characterised in that
Described bakie possesses the jut prominent to described fixed plate side,
Described fixed plate is tightened together with described jut by retention mechanism,
Described continuous casting mold embeds described through hole, and is tightened together with described fixed plate by retention mechanism.
22. according to the continuous casting apparatus according to any one of claim 17～21, it is characterised in that
Described fixed plate is made up of steel.
23. continuous casting apparatus according to claim 22, it is characterised in that
Described steel is rustless steel.
CN201310055489.8A 2012-02-22 2013-02-21 The continuous casting apparatus that the mo(u)lding of magnesium or magnesium alloy composition is cast continuously and continuous casing Expired - Fee Related CN103286286B (en)

Applications Claiming Priority (10)

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JP2012036727A JP5855972B2 (en) 2012-02-22 2012-02-22 Continuous casting equipment
JP2012-036726 2012-02-22
JP2012036728A JP5859874B2 (en) 2012-02-22 2012-02-22 Continuous casting apparatus and continuous casting method
JP2012-036730 2012-02-22
JP2012-036727 2012-02-22
JP2012036726A JP5798945B2 (en) 2012-02-22 2012-02-22 Continuous casting mold and continuous casting equipment
JP2012-036728 2012-02-22
JP2012036729A JP5789540B2 (en) 2012-02-22 2012-02-22 Heating device, continuous casting device and continuous casting method
JP2012-036729 2012-02-22
JP2012036730A JP5830410B2 (en) 2012-02-22 2012-02-22 Molten metal supply pipe and continuous casting equipment

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