CN106466710A - Chute preheating cover and chute pre-heating mean - Google Patents
Chute preheating cover and chute pre-heating mean Download PDFInfo
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- CN106466710A CN106466710A CN201510519574.4A CN201510519574A CN106466710A CN 106466710 A CN106466710 A CN 106466710A CN 201510519574 A CN201510519574 A CN 201510519574A CN 106466710 A CN106466710 A CN 106466710A
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Abstract
A kind of chute preheating cover and chute pre-heating mean, including：Shell, described shell one side near chute in preheating is the first face, and described first face offers cavity；Inner lining structure in institute's cavity pocket of outer cover, includes electric heater in described inner lining structure, for producing the heat that described chute is preheated.The present invention is heated to described chute by the electric heater in inner lining structure, realize the preheating of chute, inner lining structure and shell can be incubated to described chute, reduce excessive heat loss in chute heating process, decrease the thermal loss in chute warm, the speed of chute preheating can be accelerated, shorten the preheating time of chute, save resource and cost.Additionally, heating to described chute by electric heater in the present invention, heating process avoiding the use of naked light, extending the service life of described insulation material, it is to avoid frequently change described insulation material, decrease the generation of rubbish, more energy-conserving and environment-protective.
Description
Technical field
The present invention relates to smelting processing field, particularly to a kind of chute preheating cover and chute pre-heating mean.
Background technology
Chute is widely used in smelting processing field, for connecting smelting furnace, holding furnace and casting machine,
The liquid of melting is made to flow through.By chute transmit melt liquid, can be efficient, safe make high-temperature fusion
Liquid shifts in different smelting equipments.
Due to the liquid of flowing in chute, often temperature is very high, and melt liquid is in different smelting equipments
Transfer needs to try one's best and keeps high temperature.Therefore before smelting processing, need first convective tank to be preheated, make
Chute temperature raises, it is to avoid when melt liquid flows through chute, produce stronger heat exchange and chute between and
Make fused solution temperature reduction, affect metallurgy and foundry quality.
But the method that in prior art, convective tank is preheated exists, and heat time heating time is longer, energy loss relatively
Big problem.
Content of the invention
The problem that the present invention solves is to provide a kind of chute preheating cover and chute pre-heating mean, to shorten chute
Preheating time, reduce energy loss.
For solving the above problems, the present invention provides a kind of chute preheating cover, is used for being arranged on described chute
Convective tank is preheated it is characterised in that being included：
Shell, described shell one side near chute in preheating is the first face, and described first face offers
Cavity；
Inner lining structure in institute's cavity pocket of outer cover, includes electric heater in described inner lining structure, for producing
The heat that life is preheated to described chute.
Optionally, described inner lining structure also includes：Wrap up the insulation material of described electric heater, described insulation
Material and described electric heater constitute zone of heating；
It is filled with heat-insulation layer between described zone of heating and described shell.
Optionally, the liquid that described chute melts for transmission, the liquid flow direction along along described chute,
The length of described zone of heating and described chute equal length.
Optionally, described electric heater is resistance wire.
Optionally, described resistance wire is in wavy being distributed in described zone of heating.
Optionally, described zone of heating is located in described cavity and surrounds in described cavity towards described first
The groove in face.
Optionally, described heat-insulation layer offers U-lag towards described first face, and described zone of heating covers in institute
State bottom and the side wall of U-lag, the groove that described zone of heating surrounds liquid flowing side in vertically described chute
To section be semicircle.
Optionally, the direction that liquid flows along along described chute, the groove that described zone of heating surrounds runs through institute
State chute preheating cover.
Optionally, vertically in the section of liquid flow direction in described chute, described zone of heating surrounds groove
Width equal with the width of described chute inwall.
Optionally, described insulation material is identical with described insulation layer material.
Optionally, the material of described heat-insulation layer is refractory material.
Optionally, described shell is iron shell.
Optionally, described shell is connected with described chute by loose-leaf mode, and described chute preheating cover is used for
Cover on described chute in preheating, be additionally operable to expose described chute in non-preheating.
Optionally, described chute preheating cover also includes being arranged at described first face and covering described cavities open
Protection network.
Optionally, described protection network is ceramic fibre net.
Optionally, described shell includes the second face that is relative with described first face and not offering cavity, institute
State chute preheating cover also to include：It is opened in the reserved opening in described shell second face, described reserved opening runs through institute
State inner lining structure.
Optionally, described reserved opening adopts porcelain bushing to protect.
Optionally, described reserved opening includes the gas reserved opening for being passed through protective gas into described cavity,
Described gas reserved opening is used for being connected with the device providing protective gas.
Optionally, described gas reserved opening also includes pagoda joint, and described gas reserved opening passes through described treasured
Tower joint is connected with the device providing protective gas.
Optionally, described reserved opening also includes the electricity for setting and described electric heater connected power source line interface
Source reserved opening, described power supply reserved opening is used for being connected with the device providing described electric heater power supply.
Optionally, described reserved opening also includes the temperature reserved opening for arranging thermometer, and described temperature is pre-
Mouth is stayed to be used for being connected with the device obtaining thermometer data.
Optionally, described temperature is calculated as thermocouple thermometer.
Accordingly, the present invention also provides a kind of chute pre-heating mean, including：
Chute preheating cover provided by the present invention is provided, and described chute preheating cover is arranged on described chute
On；
It is passed through protective gas, make to be formed protective gas atmosphere in described chute；
Preheat described chute using described electric heater.
Optionally, described chute is used for the liquid of transmission melting, is providing described chute preheating cover and by institute
After stating the step that chute preheating cover is arranged on described chute, before being passed through the step of protective gas,
Described chute pre-heating mean also includes：The liquid flow direction along along described chute, preheats cover to described chute
Two ends carry out sealing treatment.
Optionally, the step carrying out sealing treatment to described chute preheating cover two ends includes：Protected using fire resisting
Warm cotton preheats cover two ends and carries out sealing treatment to described chute.
Optionally, the step being passed through protective gas includes：Described protective gas is noble gases.
Optionally, it is passed through the pressure of described protective gas in the range of 0.05MPa to 0.2MPa.
Optionally, included using the step that described electric heater preheats described chute：Carry out adding by electric heater
The time of heat is no less than 6 hours.
Compared with prior art, technical scheme has advantages below：
The present invention is heated to described chute by the electric heater in inner lining structure, realizes the preheating of chute,
Inner lining structure and shell can be incubated to described chute, reduce excessive heat in chute heating process
Amount loss, decreases the thermal loss in chute warm, can accelerate the speed of chute preheating, contracting
The preheating time of short chute, save resource and cost.Additionally, passing through electric heater in the present invention to described
Chute is heated, and avoids the use of naked light in heating process, extends making of described insulation material
With the life-span, it is to avoid frequently change described insulation material, decrease the generation of rubbish, more energy-conserving and environment-protective.
Optionally, in the alternative of the present invention, heat-insulation layer in described inner lining structure and parcel electric heating
The insulation material of device can be refractory material, it can be avoided that in prior art silicic acid cotton material use, energy
Enough avoid the ingot casting that silicic acid cotton material comes off and causes to be mingled with, affect the one-tenth such as ingot casting composition and ingot quality
Product defect produces dust additionally it is possible to reduce in production process, reduces occupation disease risk.
Optionally, in the alternative of the present invention, described chute preheating cover also includes protection network, described anti-
Protecting wire net opens up the opening of cavity on the first face of chute and described first face when covering preheating.Described
Protection network be prevented from heat-insulation layer and insulation material using tired, aging when drop and pollute fused solution
Body, reduces material and the possibility that the ingot casting causing in casting process is mingled with such as drops, improve ingot casting
Quality.
Optionally, in the alternative of the present invention, described resistance wire is distributed in described zone of heating in polyline shaped
Interior to obtain larger heating surface (area) (HS, vertically in the section of liquid flow direction in described chute, by heating
The width of described groove inner wall that layer surrounds is equal with the width of described chute inwall, and along along described chute
Liquid flow direction, the length of described zone of heating and described chute equal length.That is, described add
Thermosphere covers the surface of whole chute, can make the diverse location thermally equivalent of described chute, so that institute
State chute consistent without position temperature, described chute can be reduced and answer temperature uneven and deform upon, ftracture
Deng the possibility of damage, the service life of described chute can be extended.
Brief description
Fig. 1 to Fig. 4 is the structural representation that chute provided by the present invention preheats cover first embodiment；
Fig. 5 to Fig. 6 is the structural representation that chute provided by the present invention preheats cover second embodiment；
Fig. 7 is the flow chart of chute pre-heating mean one embodiment of the present invention.
Specific embodiment
From background technology, it is long to there is heat time heating time in the method that in prior art, convective tank is preheated,
The excessive problem of energy loss.Analyze heat time heating time in conjunction with the method that prior art convective tank is preheated
The reason long problem：
In prior art, generally chute is covered using silicic acid cotton, then tapped into firelock burning natural gas straight
Row heating.But, if silicic acid cotton lid must be excessively tight, firelock easily goes out；Tight, opening as operculum is excessive
When, radiating is too fast, thermal loss excessive increase preheating time, and gas consumption is many, and waste of resource increases
Cost.
And cover chute using silicic acid cotton, it is also easy to produce debris during winding, can cause to cast in casting process
Ingot is mingled with, and affects ingot casting composition and ingot quality.And service life is short, it is frequent to change, and is also easy to produce
Rubbish, not environmentally, inconvenient operation, injures greatly to the respiratory tract of people, easily causes occupation disease.
For solving described technical problem, the present invention provides a kind of chute preheating cover, including：
Shell, described shell one side near chute in preheating is the first face, and described first face offers
Cavity；Inner lining structure in institute's cavity pocket of outer cover, includes electric heater in described inner lining structure, is used for
Produce the heat that described chute is preheated.
The present invention is heated to described chute by the electric heater in inner lining structure, realizes the preheating of chute,
Inner lining structure and shell can be incubated to described chute, reduce excessive heat in chute heating process
Amount loss, decreases the thermal loss in chute warm, can accelerate the speed of chute preheating, contracting
The preheating time of short chute, save resource and cost.Additionally, passing through electric heater in the present invention to described
Chute is heated, and avoids the use of naked light in heating process, extends making of described insulation material
With the life-span, it is to avoid frequently change described insulation material, decrease the generation of rubbish, more energy-conserving and environment-protective.
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
Referring to figs. 1 to Fig. 4, show that chute provided by the present invention preheats the structural representation of cover first embodiment
Figure.
It should be noted that the present embodiment illustrates taking the chute preheating cover of rafifinal chute as a example,
The present invention should not be limited with this.
With reference to Fig. 1, show the top view of described chute preheating cover 100 vertical chute planes.In conjunction with reference
Fig. 2, shows the side view along A direction in Fig. 1.
It should be noted that described chute 101 is used for the liquid of transmission melting, described chute preheats cover 100
Preheated for being arranged on convective tank 101 on described chute 101.
Described chute preheating cover 100 includes：Shell 110, described shell 110 is in preheating near chute
101 one side is the first face, and described first face offers cavity.
Inner lining structure 120 in described shell 110 cavity, described inner lining structure 120 includes electric heating
Device 123, for producing the heat that described chute 101 is preheated.
Described shell 110 is used for making the molding of described inner lining structure 120 and protecting described inner lining structure 120, institute
State inner lining structure 120 to be located in the cavity of described shell 110 to form the chute covering described chute 101
Preheating cover 100.Specifically, in the present embodiment, described shell 110 is iron shell.
In the present embodiment, preheat cover 100 for ease of arranging described chute, so that described chute preheating cover 100
Cover described chute, described shell 110 is connected with described chute by loose-leaf mode, described chute preheating
Cover 100 is used for being covered with described chute 101 in preheating, is additionally operable to expose described stream in non-preheating
Groove 101, in order to the radiating of described chute 101.
Specifically, in the present embodiment, described shell 110 is connected with described chute 101 by hinge 126.
Realize the connection of loose-leaf mode between described chute preheating cover 100 and described chute 101 using hinge 126,
Described chute preheating cover 100 can be made to be arranged on described chute 101, when needs carry out being incubated, heat
When, close described chute preheating cover 100, covers described chute 101, improves heats；And be not required to
When carrying out being incubated, heating, open described chute preheating cover 100, so that described chute 101 is smoothly radiated fall
Temperature.
Additionally, along along described chute 101 liquid flow direction, the length of described chute preheating cover 100 with
The equal length of described chute 101.In the present embodiment, in described chute 101, liquid is along the stream of " L " shape
Groove 101 flows.Therefore, described chute preheating cover 100 is parallel to the shape of described chute 101 plane
For " L " shape, but the present invention to described chute preheating cover 100 parallel to described chute 101 plane shape
Shape is not intended to be limited in any, in other embodiments of the invention, when liquid flows along " I " shape chute 101,
Described chute preheating cover 100 is also " I " shape parallel to the property of described chute 101 plane, described chute
The shape of preheating cover 100 is adapted with the property of described chute 101.
Include electric heater 123 in described inner lining structure 120, with providing, described chute 101 is preheated
Heat.Additionally, described inner lining structure 120 also includes wrapping up the insulation material 124 of described electric heater 123,
Described insulation material 124 and described heater 123 constitute zone of heating 121.
Described zone of heating 121 is used for producing heat, and described heat preheats to described chute 101.
Described electric heater 123 preheats to described chute 101 as thermal source heating in warm.
Using electric heater 123, described chute 101 is heated and be advantageous in that, can avoid adding using naked light
Heat, it is to avoid the other materials of described chute preheating cover 100 is impaired in warm, reduces rubbish and produces,
Low-carbon environment-friendly.
In the present embodiment, described electric heater 123 is resistance wire.Additionally, for improving described electric heater 110
Heating surface (area) (HS, shorten chute 101 preheating time, improve the efficiency of heating surface, resistance wire be in wavy point
It is distributed in described zone of heating 121.Specifically, in the present embodiment, described resistance wire is distributed in square-wave-shaped
In described zone of heating 121.
The insulation material 124 wrapping up described electric heater 123 is used for slowing down produced by described electric heater 123
Heat loss, is incubated to described electric heater 123, makes the heat that described electric heater 123 produces as far as possible
For preheating to described chute 101.
Described inner lining structure 120 also includes being filled between described zone of heating 121 and described shell 110
Heat-insulation layer 122.
The effect of described heat-insulation layer 122 is that described chute 101 and described electric heater 123 are incubated,
Avoid heat loss, improve the pre- thermal efficiency of described chute 101, energy saving.
Described heat-insulation layer 122 opens up fluted 125 towards described first face, and described zone of heating 122 covers
The bottom of described groove and side wall.Therefore described zone of heating 121 is located in described cavity, and in described sky
Intracavity surrounds the groove 125 towards described first face.
When described chute preheating cover 100 be covered on described chute 101 when, described groove 125 with described
Space in chute 101 is connected, and forms cavity.Described chute 101 is being preheated or is being carried out
During melting, thermal convection current can be formed in described cavity such that it is able to improve described chute preheating
Cover 100 efficiencies of heating surface to described chute 100, shorten heat time heating time, save energy.
In the present embodiment, described heat-insulation layer 122 offers U-lag towards described first face, described heating
Layer 121 covers in the bottom of described U-lag and side wall.The groove 125 that therefore described zone of heating 121 surrounds
In vertically described chute 101, the section of liquid flow direction is semicircle.
Further, for increasing the heating surface (area) (HS of described zone of heating 121, improve the efficiency of heating surface, and make described
Chute 101 diverse location thermally equivalent.In the present embodiment, liquid flowing in vertically described chute 101
In the section in direction, the width D phase of the width d of described groove 125 inwall and described chute 101 inwall
Deng,
It should be noted that for making described chute 101 diverse location thermally equivalent, to avoid described chute
101 answer diverse location temperature contrast and the damage such as deform, ftracture.In the present embodiment, along described chute
The direction of liquid flowing in 101, the equal length of the length of described heat-insulation layer 122 and described chute 101,
Therefore, the equal length of the length of described zone of heating 121 and described chute 101.That is, it is described
Inner lining structure 120 covers entirely described chute 101.
Also, it should be noted for reducing manufacture difficulty, reducing manufacturing cost, in the present embodiment, described
The groove that heat-insulation layer 122 opens up towards described first face runs through described chute preheating cover 100, therefore described plus
The groove 125 that thermosphere 121 surrounds also extends through described chute preheating cover 100.But groove 125 runs through described
The way of chute preheating cover 100 is only an example, in the other embodiment of the present invention, can be according to technique
Need, the groove that described heat-insulation layer 122 is opened up towards described first face can be in described preheating cover 100
In be divided into some sections, thus, described groove 125 is also just divided into some sections, and the present invention is without limitation.
Additionally, in the present embodiment, in the section of liquid flow direction in vertically described chute 101, institute
The section stating groove 125 is semicircle, so that when described chute preheating cover 100 is covered in described chute 101
The cavity that when upper, groove 125 and described chute 101 are formed has more preferable convection effects.But it is described
The cross sectional shape that zone of heating 121 surrounds groove 125 is that semicircular way is only an example, in the present invention
In other embodiment, described zone of heating 121 can also surround the groove 125 that section is square or rectangular,
The cross sectional shape that the present invention surrounds groove 125 to described zone of heating 121 is not limited.
In described zone of heating 121, insulation material 124 is identical with the material of described heat-insulation layer 122, therefore,
Described heat-insulation layer 122 and described zone of heating 121 can processing and manufacturing simultaneously, thus reducing procedure of processing,
Reduce manufacturing cost.In the present embodiment, the material of described heat-insulation layer 122 is refractory material.
Specifically, described refractory material is Al93 refractory material.Al93 refractory material exists for alumina content
More than 93% high alumina refractories, refractoriness is higher, can bear higher temperature.Therefore, Al93
The service life of refractory lining is longer, it can be avoided that frequently changing inner lining material, reduces the product of rubbish
Raw, environmental protection low-carbon (LC).
Additionally, in the present embodiment, described chute 101 is used for transmitting the aluminum of melting in the melting of rafifinal
Using the liner of Al93 refractory material, liquid, is also avoided that introducing is extra in therefore described chute preheating cover 100
Impurity, it is to avoid inner lining material pollute chute 101 in molten aluminum liquid.
It should be noted that protection network 130, described protection are additionally provided with the first face of described shell 110
Net 130 covers described cavities open.Arrange described protection network 130 to be advantageous in that, can be in convective tank
During 101 preheatings and whole melting, reduce coming off etc. of described inner lining structure 120 and cause convective tank
101 and chute 101 in melt liquid pollution, reduce additional contamination produce possibility.
Specifically, in the present embodiment, described protection network 130 is ceramic fibre net.Ceramic fibre is a kind of
Fiber posts lightweight refracrory, has the advantages that lightweight, high temperature resistant, heat stability is good, low thermal conductivity,
Can effectively be reduced using ceramic fibre formation protection network 130 and decline into chute in preheating and fusion process
101 liner 121, reduces the introducing of additional impurities.Additionally, the protection that network structure ceramic fibre is formed
Net 130 will not impact to the thermal convection current between described chute preheating cover 100 and described chute 101,
The efficiency of heating surface of described chute preheating cover 100 will not be impacted.
In conjunction with reference to Fig. 3 and Fig. 4, wherein Fig. 3 shows the sectional view in Fig. 1 along B-B ' line, Fig. 4
Show the sectional view along C-C ' line in Fig. 1.
In the present embodiment, described shell 101 also includes relative with described first face and does not offer cavity
Second face.Described chute preheating cover 100 also includes：It is opened in the reserved opening in described shell second face, institute
State reserved opening and run through described inner lining structure 120.
For improving the stability of described chute preheating cover 100 functions, it is to avoid described reserved opening in preheating and
Sustain damage in fusion process, in the present embodiment, described reserved opening adopts porcelain bushing to protect.
In conjunction with reference to Fig. 3, for preventing melt liquid from aoxidizing, described chute 101 is being preheated and is being adopted
During carrying out melting with described chute 101, the melt liquid in described chute 101 needs to be in guarantor
In the atmosphere of shield gas, therefore for ease of forming the atmosphere of protective gas, this reality in described chute 101
Apply in example, described reserved opening includes the gas reserved opening 140 for being passed through protective gas into described cavity,
Described gas reserved opening 140 is used for being connected with the device providing protective gas.
Described gas reserved opening 140 includes the gas external tapping 141 on described second face, for carry
Device for protective gas is connected.
Described gas reserved opening 140 also includes the gas via-hole 142 being connected with described gas external tapping 141,
Described gas via-hole 142 runs through described shell 110 and described inner lining structure 120.Protective gas through gas outside
Interface 141, enters in described chute 101 by described gas via-hole 141, is formed and protect in described chute
Shield gas atmosphere.
Being passed through for ease of protective gas, described gas reserved opening 140 is gas pagoda interface.Specifically,
Described gas external tapping 141 is gas pagoda interface.And gas pagoda interface can also improve described gas
The reliability of body reserved opening 141, and improve the convenience of handling.
In the present embodiment, described gas reserved opening 140 adopts porcelain bushing to protect.That is, it is described
It is provided with the porcelain bushing being connected with gas external tapping 141, described protective gas leads in gas via-hole 142
Cross described porcelain bushing to be passed through inside described chute preheating cover 100, with prevent inner lining structure 120 material with
Protective gas enters in chute, the melt liquid in pollution chute.
In conjunction with reference to Fig. 4, described reserved opening is also included for setting and described electric heater 123 connected power source line
The power supply reserved opening 150 of 153 interfaces, described power supply reserved opening 150 is used for and provides described electric heater 123
The device of power supply is connected.
Specifically, in the present embodiment, described power supply reserved opening 150 includes the electricity on described second face
Source interface 151, for being connected with the device providing described electric heater 123 power supply.
Described power supply reserved opening 150 also includes the power vias 152 being connected with described power interface 151,
Described power vias 152 run through described shell 110 and described inner lining structure 120.Described electric heater 123
Power line 153 is arranged in described power vias 152, realizes described electric heater 123 and externally fed electricity
The electrical connection in source.
In the present embodiment, described power supply reserved opening 150 adopts porcelain bushing to protect.That is, it is described
It is provided with the porcelain bushing being connected with power interface 151, described power line 153 sets in power vias 152
It is placed in described porcelain bushing, to protect described power line 153, improve the heating of described chute preheating cover 100
The stability of function.
Further, for obtaining the temperature of described chute 101, to improve to described chute 101 the pre-heat treatment
Control ability, in the present embodiment, described reserved opening also include for thermometer 161 interface is set 161
Temperature reserved opening 160, described temperature reserved opening 160 is used for being connected with the device obtaining thermometer data.Tool
Body, in the present embodiment, described thermometer 161 is thermocouple thermometer.
Thermocouple thermometer is to carry out thermometric instrument according to pyroelectric effect, has certainty of measurement height,
The wide advantage waiting of range ability, and thermocouple thermometer is primarily adapted for use in high temperature warm area.Therefore adopt
Thermocouple thermometer 161 obtains chute 101 temperature, is conducive to improving the control of troposphere 101 the pre-heat treatment
Ability processed, shortens heat time heating time, improves the efficiency of heating surface.
Specifically, described temperature reserved opening 160 includes running through described shell 110 and described inner lining structure 120
Temperature through hole 162, described thermometer 161 is arranged in described temperature through hole 162, described for obtaining
The temperature of chute 101.
Described thermometer reserved opening 160 also includes the temperature interface 163 positioned at described shell second face, is used for
The setting conllinear interface of thermocouple, is connected with the device obtaining thermometer 161 data.
In the present embodiment, described thermometer reserved opening 160 adopts porcelain bushing to protect.That is, institute
State and in temperature through hole 162, be provided with the porcelain bushing being connected with temperature interface 163, described thermometer 161
It is arranged in described porcelain bushing, to protect described thermometer 161 in use from damage.
With continued reference to Fig. 1, preheat cover 100 for ease of placing described chute, so that described chute preheating cover 100
It is covered in above described chute 101, described chute preheating cover 100 also includes being arranged at described shell 110
The handle 170 on surface, for carrying operation.
In the present embodiment, circulus is formed on the second face of described shell 110 to constitute handle 170.
Specifically, handle 170 can be formed by welding circulus on the second face of iron shell 110,
The present invention generation type of handle 170 is not restricted it is also possible to formed described shell 122 while
Form the handle 170 of circulus.
With reference to Fig. 5 to Fig. 6, show that chute of the present invention preheats the structural representation of cover second embodiment.
With reference to Fig. 5, show the top view of the vertical described chute surface direction of described chute preheating cover 200.
In conjunction with reference to Fig. 6, show the sectional view along D-D ' line in Fig. 5.
The present embodiment is first consisted in first embodiment difference, described temperature reserved opening and described power supply
Reserved opening merges into electric preformed hole 280 in the present embodiment.
Specifically, described electric reserved opening 280 includes：Run through described shell 210 and described inner lining structure
220 electrical via 284, described thermometer 283 and power line 285 may be contained within described electrical via
In 284.
Described electric reserved opening 280 also includes：It is arranged on described shell 210 second face, for arranging
The electric heater interface 282 of described electric heater 223 power line 285 interface and be used for arranging described thermometer
The thermometer boss 281 of 283 interfaces.Described electric heater interface 282 is powered with providing described electric heater 223
The device of power supply is connected, and described thermometer boss 281 is used for and the device phase obtaining thermometer 285 data
Even.
Further, described electrical equipment reserved opening 280 is also adopted by silicon carbide ceramics casing protection, described to prevent
Thermocouple thermometer 283 and electric heater 210 power line 285 are impaired in use.Specifically,
Described electrical via 284 side wall is provided with silicon carbide ceramics sleeve pipe, described thermocouple thermometer 161 and institute
State power line 151 and may be contained within described silicon carbide ceramics sleeve pipe, to protect described thermocouple thermometer 161
With described power line 151.
It should be noted that in the present embodiment, described electric heater interface 282 is located at described thermometer boss
Above in the of 281, and the way that described electric heater interface 282 is disposed opposite to each other with described thermometer boss 281 is only
For an example, the position relationship to described electric heater interface 282 and described thermometer boss 281 for the present invention
Do not do any restriction.In other embodiments of the present invention, described electric heater interface 282 can also be located at institute
State below thermometer boss 281, or described electric heater interface 282 is same with described thermometer boss 281
To setting.
With continued reference to Fig. 5, the present embodiment and first embodiment also differ in that described chute preheating cover
200 and described chute 201 connected mode be by rotary shaft 226 realize connect.
Connect the benefit of the way of described chute preheating cover 200 and described chute 201 using rotary shaft 226
It is that the length connecting between described chute preheating cover 200 and described chute 201 is longer, therefore described stream
Connective stability between groove preheating cover 200 and described chute 201 is higher, and the life-span is longer.
Accordingly, the present invention also provides a kind of chute pre-heating mean, including：
Chute preheating cover provided by the present invention is provided, and described chute preheating cover is arranged on described chute
On；It is passed through protective gas, make to be formed protective gas atmosphere in described chute；Using the preheating of described electric heater
Described chute.
With reference to Fig. 7, the flow chart showing chute pre-heating mean one embodiment of the present invention.
Step S100 is first carried out, chute preheating cover provided by the present invention is provided.Described chute preheating cover
Concrete structure with reference to described in previous embodiment, the present invention will not be described here.
Further it is provided that after described chute preheating cover, described chute preheating cover is arranged on chute.
In the present embodiment, described chute preheating cover shell is connected with described chute by loose-leaf mode.Therefore,
The described chute preheating step that is arranged on described chute of cover is specially closed described chute preheating cover, with
Described chute preheating cover is made to cover described chute.
Execution step S200 afterwards, is passed through protective gas into chute, to form protective gas in chute
Atmosphere.
It should be noted that described chute is used for the liquid of transmission melting, in the present embodiment, for reducing energy
Amount loss, improves the efficiency of heating surface, and execution step S100 offer described chute preheating cover simultaneously will be pre- for described chute
After the step that heat cover is arranged on described chute, execution step S200 be passed through protective gas step it
Before, described chute pre-heating mean also includes：Execution step S150, the liquid flow direction along along described chute,
Described chute is preheated with cover two ends and carries out sealing treatment.
In the present embodiment, described chute preheating cover two ends are covered using fire resistant heat preserving cotton, to close described stream
The two ends of groove preheating cover, reduce in the composition that described chute is preheated, heat is pre- from described chute
Heat cover two ends loss, to improve the efficiency that described chute is preheated, save energy.
Convective tank preheated and fusion process afterwards in, in described chute melt liquid need locate
It is therefore desirable to be passed through protective gas to form protective gas in described chute in the atmosphere of protective gas
Atmosphere, to described chute preheat cover two ends carry out sealing treatment also be beneficial in described chute formed protection
The atmosphere of gas, can save protective gas, reduces cost.
In the present embodiment, described chute preheating cover includes the gas reserved opening being arranged in insulation construction,
The step being therefore passed through protective gas includes：By described gas reserved opening and the device phase providing protective gas
Even, described protective gas is passed through by described gas reserved opening.It is passed through described using described gas reserved opening
Protective gas, will not destroy the covering to described chute for the described chute preheating cover, it is possible to reduce thermal loss,
Improve the efficiency of heating surface.Specifically, the protective gas being passed through is noble gases, in the present embodiment, described guarantor
Shield gas is high purity argon or nitrogen.
If it should be noted that the flow being passed through described protective gas is excessive, easily in fusion process
Melt liquid is caused to roll, so that the oxide layer that molten liquid surface is formed enters inside melt liquid,
So that melting is insufficient, occur being mingled with phenomenon during ingot casting；Due to described chute preheat cover and
Chute does not fully seal, if the shield gas flow rate being therefore passed through is too small, is difficult to shape in chute
Become protective gas atmosphere.So, in the present embodiment, the pressure being passed through described protective gas is in 0.05MPa
To in the range of 0.2MPa.
After air in emptying chute, and formation protective gas atmosphere in chute, execution step S300,
Preheat described chute using the electric heater in described chute preheating cover.
Specifically, in the present embodiment, described chute preheating cover includes electric heater, the electricity of described electric heater
Source line interface is arranged at described chute preheating cover surface.Preheat described chute hence with described electric heater
Step includes：Described power supply reserved opening is connected with the device providing described electric heater power supply, makes institute
State chute preheating cover electric heater to realize electrically connecting with power supply, open described electric heater, so that described electricity
Chute described in hot tolerance is preheated.
The purpose that described chute is preheated is to carry out drying dehumidification to described chute, and makes described
Chute temperature reaches preset value, if therefore preheating time is too short, cannot dry described chute completely,
Or described chute temperature is unable to reach preset value.So, in the present embodiment, pre- using described electric heater
The step of the described chute of heat includes：The time heated is no less than 6 hours.It should be noted that it is right
The time that described chute is preheated is not easy to long, if preheating time is long, can increase electric cost,
Improve production cost, therefore when the temperature of described chute reaches preset value, can select to start melting.
To sum up, the present invention is heated to described chute by the electric heater in inner lining structure, realizes chute
Preheating, inner lining structure and shell can be incubated to described chute, reduce in chute heating process
Excessive heat loss, decreases the thermal loss in chute warm, can accelerate chute preheating
Speed, shortens the preheating time of chute, saves resource and cost.Additionally, passing through electric heating in the present invention
Device heats to described chute, avoids the use of naked light in heating process, extends described insulation
The service life of material, it is to avoid frequently change described insulation material, decrease the generation of rubbish, more supernumerary segment
Can environmental protection.Additionally, in the alternative of the present invention, described chute preheating cover also includes protection network, described
Protection network opens up the opening of cavity on the first face of chute and described first face when covering preheating.Institute
State protection network be prevented from heat-insulation layer and insulation material using tired, aging when drop and pollute melting
Liquid, reduces material and the possibility that the ingot casting causing in casting process is mingled with such as drops, improve ingot casting
Quality.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (28)
1. a kind of chute preheating cover, be used for being arranged on convective tank on described chute preheated it is characterised in that
Described chute preheating cover includes：
Shell, described shell one side near chute in preheating is the first face, and described first face offers
Cavity；
Inner lining structure in institute's cavity pocket of outer cover, includes electric heater in described inner lining structure, for producing
The heat that life is preheated to described chute.
2. chute preheating cover as claimed in claim 1 is it is characterised in that described inner lining structure also includes：Bag
Wrap up in the insulation material of described electric heater, described insulation material and described electric heater constitute zone of heating；
It is filled with heat-insulation layer between described zone of heating and described shell.
3. chute preheating cover as claimed in claim 2 is it is characterised in that described chute is used for transmission melting
Liquid, the liquid flow direction along along described chute, the length of described zone of heating and described chute length phase
Deng.
4. chute preheating cover as claimed in claim 2 is it is characterised in that described electric heater is resistance wire.
5. chute preheating cover as claimed in claim 4 is it is characterised in that described resistance wire is in wavy distribution
In described zone of heating.
6. chute preheating cover as claimed in claim 2 is it is characterised in that described zone of heating is located at described cavity
Interior and surround the groove towards described first face in described cavity.
7. chute as claimed in claim 6 preheating cover is it is characterised in that described heat-insulation layer is towards described first
Face offers U-lag, and described zone of heating covers in the bottom of described U-lag and side wall, described heating
The section of groove liquid flow direction in vertically described chute that layer surrounds is semicircle.
8. chute as claimed in claim 7 preheating cover is it is characterised in that the liquid flowing along along described chute
Direction, the groove that described zone of heating surrounds runs through described chute preheating cover.
9. chute as claimed in claim 7 preheating cover is it is characterised in that vertically liquid flowing in described chute
In the section in direction, the width that described zone of heating surrounds groove is equal with the width of described chute inwall.
10. chute as claimed in claim 2 preheating cover is it is characterised in that described insulation material and described insulation
Layer material is identical.
11. chute preheating covers as claimed in claim 10 are it is characterised in that the material of described heat-insulation layer is fire resisting
Material.
12. chute preheating covers as claimed in claim 1 are it is characterised in that described shell is iron shell.
13. chutes as claimed in claim 1 preheating covers it is characterised in that described shell by loose-leaf mode with
Described chute is connected, and described chute preheating cover, for covering in described chute in preheating, is additionally operable to
Expose described chute in non-preheating.
14. chute preheating covers as claimed in claim 7 are it is characterised in that described chute preheating cover also includes setting
It is placed in described first face and cover the protection network of described cavities open.
15. chute preheating covers as claimed in claim 14 are it is characterised in that described protection network is ceramic fibre net.
16. chute preheating covers as claimed in claim 1 are it is characterised in that described shell includes and described first
Face relatively and does not offer the second face of cavity, and described chute preheating cover also includes：It is opened in described outer
The reserved opening in shell second face, described reserved opening runs through described inner lining structure.
17. chute preheating covers as claimed in claim 16 are it is characterised in that described reserved opening adopts porcelain bushing
Protection.
18. chute preheating covers as claimed in claim 16 are it is characterised in that described reserved opening is included for institute
State the gas reserved opening being passed through protective gas in cavity, described gas reserved opening is used for and provides shielding gas
The device of body is connected.
19. chute preheating covers as claimed in claim 18 are it is characterised in that described gas reserved opening also includes treasured
Tower joint, described gas reserved opening is passed through described pagoda joint and is connected with the device providing protective gas.
20. chute preheating covers as claimed in claim 16 are it is characterised in that described reserved opening is also included for setting
Put the power supply reserved opening with described electric heater connected power source line interface, described power supply reserved opening is used for and carries
Device for described electric heater power supply is connected.
21. chute preheating covers as claimed in claim 16 are it is characterised in that described reserved opening is also included for setting
Put the temperature reserved opening of thermometer, described temperature reserved opening is used for and the device phase obtaining thermometer data
Even.
22. chute preheating covers as claimed in claim 21 are it is characterised in that described temperature is calculated as electric thermo-couple temperature
Meter.
A kind of 23. chute pre-heating means are it is characterised in that include：
Chute preheating cover as described in claim 1 is to claim 22 any one claim is provided, and will
Described chute preheating cover is arranged on described chute；
It is passed through protective gas, make to be formed protective gas atmosphere in described chute；
Preheat described chute using described electric heater.
24. chute pre-heating means as claimed in claim 23 are it is characterised in that described chute is used for transmission melting
Liquid, described chute preheating cover is being provided and described chute preheating cover is being arranged on described chute
After step, before being passed through the step of protective gas, described chute pre-heating mean also includes：Along institute
State liquid flow direction in chute, described chute is preheated with cover two ends and carries out sealing treatment.
25. chute pre-heating means as claimed in claim 24 it is characterised in that preheat cover two ends to described chute
The step carrying out sealing treatment includes：Using fire resistant heat preserving cotton, described chute is preheated with cover two ends to seal
Close process.
26. chute pre-heating means as claimed in claim 23 are it is characterised in that be passed through the step bag of protective gas
Include：Described protective gas is noble gases.
27. chute pre-heating means as claimed in claim 26 are it is characterised in that be passed through the pressure of described protective gas
By force in the range of 0.05MPa to 0.2MPa.
28. chute pre-heating means as claimed in claim 23 are it is characterised in that preheat institute using described electric heater
The step stating chute includes：It is no less than 6 hours by the time that electric heater is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519574.4A CN106466710A (en) | 2015-08-21 | 2015-08-21 | Chute preheating cover and chute pre-heating mean |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519574.4A CN106466710A (en) | 2015-08-21 | 2015-08-21 | Chute preheating cover and chute pre-heating mean |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106466710A true CN106466710A (en) | 2017-03-01 |
Family
ID=58229175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510519574.4A Pending CN106466710A (en) | 2015-08-21 | 2015-08-21 | Chute preheating cover and chute pre-heating mean |
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| Country | Link |
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| CN (1) | CN106466710A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106825457A (en) * | 2017-03-14 | 2017-06-13 | 派罗特克（广西南宁）高温材料有限公司 | A kind of built-in type electrical heating chute |
| CN114130988A (en) * | 2021-12-03 | 2022-03-04 | 广东鸿图南通压铸有限公司 | Method for reducing temperature loss of die-casting trough |
| CN114393201A (en) * | 2022-01-07 | 2022-04-26 | 江苏省沙钢钢铁研究院有限公司 | Long launder baking device and baking method for vacuum induction furnace |
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| US20050126738A1 (en) * | 2003-12-11 | 2005-06-16 | Tingey John S. | Heated trough for molten metal |
| US20090078723A1 (en) * | 2004-12-30 | 2009-03-26 | Outotec Oyj | Launder for casting molten copper |
| CN102858479A (en) * | 2010-04-19 | 2013-01-02 | 诺维尔里斯公司 | Molten metal leakage confinement and thermal optimization in vessels used for containing molten metals |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106825457A (en) * | 2017-03-14 | 2017-06-13 | 派罗特克（广西南宁）高温材料有限公司 | A kind of built-in type electrical heating chute |
| CN114130988A (en) * | 2021-12-03 | 2022-03-04 | 广东鸿图南通压铸有限公司 | Method for reducing temperature loss of die-casting trough |
| CN114393201A (en) * | 2022-01-07 | 2022-04-26 | 江苏省沙钢钢铁研究院有限公司 | Long launder baking device and baking method for vacuum induction furnace |
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