CN1943911A - Magnesium alloy underflow type horizontal continuous casting machine - Google Patents
Magnesium alloy underflow type horizontal continuous casting machine Download PDFInfo
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- CN1943911A CN1943911A CN 200610117885 CN200610117885A CN1943911A CN 1943911 A CN1943911 A CN 1943911A CN 200610117885 CN200610117885 CN 200610117885 CN 200610117885 A CN200610117885 A CN 200610117885A CN 1943911 A CN1943911 A CN 1943911A
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Abstract
The present invention relates to material preparing technology, and is especially one kind of underflow type horizontal continuous magnesium alloy casting machine. The underflow type horizontal continuous magnesium alloy casting machine includes one melting furnace on the ground for smelting, purifying, holding and maintaining magnesium alloy melt; one protecting gas mechanism over the melting furnace to mix gases from outside cylinders and feed the gas mixture to the crucible in the melting furnace; one melt blocking mechanism; one crystallizer for solidifying magnesium alloy melt; one horizontal underflow channel connecting the crystallizer to the melting furnace for magnesium alloy melt to flow through; and one roller type drawing mechanism on the ground. The present invention can avoid the oxidation contamination of magnesium alloy melt.
Description
Technical field
The present invention relates to a kind of equipment of technical field of material, specifically is a kind of magnesium alloy underflow type horizontal continuous casting machine.
Background technology
Magnesium is one of the abundantest element of reserves on the earth, account for 2.35% of earth crustal mass, magnesium proportion has only 1.74, only be equivalent to 2/3 of aluminium, 1/4 of iron, magnesium alloy has that specific strength specific stiffness height, heat-conductivity conducting are good, damping vibration attenuation, electromagnetic shielding, easily shape and advantage such as recovery easily, can be widely used in the industries such as automobile, Aero-Space, electronics and military project, reaches the purpose of effective reduction life cycle energy consumption.But, present 90% magnesium alloy parts adopt casting die production, expansion along with the magnesium alloy range of application, magnesium alloy deformation product (as extrudate, rolling, punching press, forging parts) will become its development trend according to estimates, produce the then magnesium alloy continuous casting blank of essential high-quality of modified product such as various extrudates: any surface finish, interior tissue are evenly tiny, cleaning and segregation are little.
The continuous casting unit is as the necessaries of producing various continuous casting billets, existing research in the prior art, as produce vertical casting machine, circular-arc type continuous casting machine and the horizontal caster etc. of cast steel, and produce the continuous up-casting machine of electrician's copper bar, produce the vertical semi-continuous casting machine of aluminium ingot and horizontal caster etc.But because magnesium alloy has very active chemical property; very easily produce oxidation, burning with the oxygen reaction; and magnesium liquid contacts the danger that generation " hydrogen is quick-fried " also arranged with water; at present produce the conticaster of steel, copper, aluminium owing to there are not special-purpose safeguard procedures, can't avoid contacting and the possibility of magnesium liquid water breakthrough thereby be not suitable for the continuous casting of magnesium alloy of liquid magnesium alloy and oxygen.The seventies is once relevant for the report of vertical magnesium alloy continuous casting machine, but this conticaster still adopts direct water spray mode to carry out the secondary cooling, in case cast failure, magnesium metal liquid easily takes place to be contacted with cooling water and causes the danger of " hydrogen is quick-fried ", simultaneously, the continuous casting billet length of vertical casting machine is subjected to its device-restrictive and very limited, and production efficiency is low, in fact be a kind of D.C.casting production, can't realize real continuous casting.
Find through literature search prior art; Chinese patent publication number: CN01105715.7; name is called: horizontal conticaster dedicated for Mg-alloy; in this patent: place the crucible that has seal cover and protective gas input unit in the body of heater; the crucible below is provided with the covering flux pond; the outer along continuous straight runs at pouring furnace sidepiece sprue gate is equipped with fourplatemold; the fabricated structure that crystallizer adopts interior cover of graphite water conservancy diversion cover and red copper and steel overcoat to constitute, the sprocket-type structure that haulage gear adopts direct current generator to drive.The apparatus and process thinking is fine, but has shortcoming such as equipment complexity, melt transmission channel are fragile, high temperature maintenance difficult and do not realize industrialization.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of magnesium alloy underflow type horizontal continuous casting machine is provided.Melt after melted directly enters the crystallizer coagulation forming through undercurrent type passage, and continuous drawing goes out the high-quality magnesium alloy strand of different shape.
The present invention is achieved by the following technical solutions, the present invention includes melting furnace, gas shield mechanism, the stifled mechanism of melt plug, undercurrent type passage, crystallizer and roll-type haulage gear.Melting furnace is placed on the ground, is used for melting, purification, static and insulation magnesium alloy fused mass; Gas shield mechanism places melting furnace top, sends in the melting furnace crucible after the gas that extraneous gas cylinder is transported mixes, and forms gas shield melting environment; The stifled mechanism of melt plug is welded on melting furnace crucible lower inside, plays the effect of switch magnesium alloy fused mass, and is communicated with undercurrent type passage level in the melting furnace.Undercurrent type passage is communicated with melting furnace crystallizer level outward, all is fixed together with screw and melting furnace by ring flange, and undercurrent type passage and crystallizer are respectively in order to flow through and to solidify magnesium alloy fused mass; Roll-type haulage gear and melting furnace, undercurrent type passage and crystallizer keep same straight line level, are provided with on the ground, and the ingot blank after will solidifying pulls straight in crystallizer.
Described melting furnace comprises body of heater, crucible, resistance wire pallet, resistance wire, crucible holder and leakage hole.Body of heater is positioned at the melting furnace outside, comprises furnace wall, furnace bottom and insulation material, and the cylindrical metal bucket that is welded with steel plate is the furnace wall, is furnace bottom at the bottom of the metal bucket, and building in the furnace wall and on the furnace bottom has one deck insulation material; Crucible is positioned at the middle part of body of heater cavity, is welded by mild steel, is the container that directly contacts with magnesium alloy fused mass, and movably bell is arranged, and is seated on the crucible holder, and crucible holder and furnace bottom welding are fixing.Resistance wire place on the resistance wire pallet, and the insulation material of resistance wire pallet and body of heater is fixed together by high-temp glue between body of heater and crucible.Have leakage hole in the furnace bottom side, be used to discharge crucible and damage the melt that flow out the back.
Described melt plug is blocked up mechanism, comprises plug and stopper.At crucible lower inside welding plug, stainless steel is made, and plug hollow can be in order to the magnesium alloy fused mass of flowing through, and upper interface is tapered, arranges that vertically the stopper head is also tapered, and stopper blocks upper interface under the ambient pressure effect, stops the melt-flow warp in the crucible; Plug bottom interface is wedge shape, and is horizontally disposed.
Described undercurrent type passage is the stainless steel tube of a hollow, and an end is wedge shape, matches the flanged dish of the other end with the bottom interface of plug.
Described crystallizer links to each other with undercurrent type passage, is divided into overcoat and interior cover.In cover hot charging graphite cannula, graphite cannula contact with high-temperature fusant to form once and cools off, and along casting direction graphite cannula attenuate gradually, once cools off to grow from weak to strong.Outer putting by undercurrent type passage one side has ring flange.Between overcoat and the interior cover is water cavity, passes to cooling water, and cooling water forms the secondary cooling from crystallizer tail end ejection cooling ingot blank.
The roll forming of the upper and lower carry-over pinch rolls of described roll-type haulage gear is identical with the ingot blank shape of being cast, and the geometric center of geometric center and crystallizer drives carry-over pinch rolls by direct current generator on same level height.
During work, at first adopt stopper to block the upper interface of plug, resistance wire is passed to different big or small electric currents, melting in the crucible in melting furnace, purification, static and insulation magnesium alloy fused mass.Loosening stopper, melt directly enters in the crystallizer by undercurrent type passage.Crystallizer is passed to cooling water, and alloy melt contacts with graphite cannula and obtains once cooling, forms solidified shell, contact with the cooling water of crystallizer water jacket ejection then and obtain the secondary cooling, finally be frozen into magnesium alloy ingot blank, start the throwing system simultaneously, rotate the continuous drawing ingot blank by carry-over pinch rolls.
Biggest advantage of the present invention is that magnesium alloy fused mass after melted is through undercurrent type passage, directly enter the crystallizer coagulation forming, stop in the casting process melt and contacted and produce oxidizing fire with air and pollute, finally drawn out the high-quality magnesium alloy strand of different shape.Deft design is convenient to installation, dismounting, cleaning and the replacement of undercurrent type passage and crystallizer; Compact conformation, floor space, the advantage that cost is low is particularly suitable for medium-sized and small enterprises.
The present invention is suitable for the continuous casting of magnesium alloy, the round base of production specification 40-200mm diameter, the square billet of section 10-200mm * 100-300mm.
Description of drawings
Fig. 1 is a structural representation of the present invention
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.As shown in Figure 1, present embodiment comprises melting furnace, gas shield mechanism, melt plug bridging structure, undercurrent type passage, crystallizer and roll-type haulage gear.
Described melting furnace (single melting magnesium alloy fused mass 300-2000kg, the enterprise of suitable different scales) can be used as an integral body and is located on the ground, comprises body of heater 1, crucible 4, resistance wire 5, resistance wire pallet 12, crucible holder 13 and leakage hole 14.Body of heater 1 is positioned at the melting furnace outside, comprises furnace wall, furnace bottom and insulation material, and the cylindrical metal bucket that is welded with the 6-8mm steel plate is the furnace wall, is furnace bottom at the bottom of the metal bucket, and all building in the furnace wall and on the furnace bottom has the thick insulation material of one deck 100mm; Crucible 4 is positioned at the cavity middle part of body of heater 1, is welded by the thick mild steel of 15-20mm, is the container of melting magnesium alloy fused mass, and movably bell is arranged, and is seated on the crucible holder 13, and crucible holder 13 is fixing with the furnace bottom welding of body of heater 1.Resistance wire 5 is between body of heater 1 and crucible 4, and power 80-400KW places on the resistance wire pallet 12, and the insulation material of resistance wire pallet 12 and body of heater 1 is fixed together by high-temp glue.At the bottom of the furnace wall of body of heater 1, have leakage hole 14, discharge the melt that leaks in case crucible 4 damages the back.
Described gas shield mechanism 2 places body of heater 1 top, extraneous gas cylinder is carried and the FS that comes
6And CO
2Mix the back and be sent in the crucible 4, prevent the oxidation and the burning of melt by the 10mm metal tube.
The stifled mechanism of described melt plug comprises plug 6 and stopper 3, plays the effect of switch magnesium alloy fused mass.At the high position welding plug 6 of crucible 4 inner distance bottom 150mm, stainless steel processes, and plug 6 hollow hole diameter 40mm can be in order to the magnesium alloy fused mass of flowing through, and last interface is tapered, vertically arranges.Diameter is that stopper 3 heads of 50mm are also tapered, and outer boundary pressure and cone-shaped interface form and closely cooperate, and blocks the melt in the crucible 4; Lower interface is horizontally disposed, is wedge shape, is communicated with undercurrent type passage 7 levels.
Described undercurrent type passage 7 is stainless steel tubes of a hollow, and internal diameter 50mm is in order to the magnesium alloy fused mass of flowing through, one end is wedge shape, match with the bottom interface of plug 6, the flanged dish of the other end, undercurrent type passage 7 is fixing with melting furnace 1 with screw 8 by this ring flange.
Described crystallizer 9 is communicated with undercurrent type passage 7 levels, is the container of magnesium alloy solidification, is processed by red copper, and wall thickness 5mm is divided into overcoat and interior cover, and is by the ring flange that puts outward that crystallizer 9 is fixing with melting furnace 1 with screw 8.In cover hot charging graphite cannula 15, contact with high-temperature fusant and to form once cooling, and along casting direction graphite cannula attenuate gradually, once cool off and grow from weak to strong, help the formation of solidified shell and do not produce shortcoming.Between overcoat and the interior cover is water cavity, passes to cooling water, and cooling water forms the secondary cooling from crystallizer 9 tail ends ejection cooling ingot blank 10, and cooling water pressure is 1 hydraulic pressure, and the angle of water spray is 15-20 ℃.The interior cover of crystallizer 9 and the concrete geomery of graphite cannula 15 can be cast the round base of 40-200mm diameter and the square billet of section 10-200mm * 100-300mm according to the product design of different size.
Described roll-type haulage gear 11 is located on the ground, the ingot blank 10 that crystallizer 9 comes out after solidifying inserts in the carry-over pinch rolls roll forming of roll-type haulage gears 11, roll forming is identical with the shape of ingot blank 10, and the geometric center of the geometric center of roll forming and crystallizer 9 is on sustained height.Drive carry-over pinch rolls by direct current generator and rotate, frictionally pulls straight ingot blank 10.
Claims (10)
1; a kind of magnesium alloy underflow type horizontal continuous casting machine; comprise melting furnace; gas shield mechanism; melt plug is blocked up mechanism; undercurrent type passage; crystallizer and roll-type haulage gear; it is characterized in that: melting furnace is placed on the ground; be used for melting; purify; static and the insulation magnesium alloy fused mass; gas shield mechanism places the melting furnace top; the gas that extraneous gas cylinder is transported is sent in the melting furnace crucible after mixing; the stifled mechanism of melt plug is welded on melting furnace crucible lower inside; play the effect of switch magnesium alloy fused mass; and be communicated with undercurrent type passage level in the melting furnace; undercurrent type passage is communicated with melting furnace crystallizer level outward; undercurrent type passage and crystallizer all are fixed together with screw and melting furnace by ring flange; undercurrent type passage and crystallizer are respectively in order to flow through and to solidify magnesium alloy fused mass; roll-type haulage gear and melting furnace; undercurrent type passage and crystallizer keep same straight line level; be provided with on the ground, the ingot blank after will solidifying pulls straight in crystallizer.
2, magnesium alloy underflow type horizontal continuous casting machine according to claim 1, it is characterized in that, described melting furnace comprises: body of heater, crucible, the resistance wire pallet, resistance wire, crucible holder and leakage hole, body of heater is positioned at the melting furnace outside, comprise the furnace wall, furnace bottom and insulation material, the cylindrical metal bucket that is welded with steel plate is the furnace wall, it at the bottom of the metal bucket furnace bottom, building in the furnace wall and on the furnace bottom has one deck insulation material, and crucible is positioned at the middle part of body of heater cavity, is the container that directly contacts with magnesium alloy fused mass, and movably bell is arranged, be seated on the crucible holder, crucible holder and furnace bottom welding are fixing, and resistance wire is between body of heater and crucible, place on the resistance wire pallet, and the insulation material of resistance wire pallet and body of heater is fixed together by high-temp glue, has leakage hole in the furnace bottom side, is used to discharge crucible and damages the melt that flow out the back.
3, magnesium alloy underflow type horizontal continuous casting machine according to claim 2 is characterized in that, described furnace wall and furnace bottom are welded with the 6-8mm steel plate, the thick 100mm of insulation material; Crucible is welded by the thick mild steel of 15-20mm, resistance wire power 80-400KW.
4, magnesium alloy underflow type horizontal continuous casting machine according to claim 1, it is characterized in that described melt plug is blocked up mechanism, comprises plug and stopper, at crucible lower inside welding plug, plug hollow, upper interface is tapered, vertically arranges, the stopper head is also tapered, stopper blocks upper interface under the ambient pressure effect, and plug bottom interface is wedge shape, and is horizontally disposed.
5, magnesium alloy underflow type horizontal continuous casting machine according to claim 4 is characterized in that, described stopper diameter is 50mm.
6, magnesium alloy underflow type horizontal continuous casting machine according to claim 1 is characterized in that, described undercurrent type passage is the stainless steel tube of a hollow, and an end is wedge shape, matches the flanged dish of the other end with the bottom interface of plug.
7, magnesium alloy underflow type horizontal continuous casting machine according to claim 1, it is characterized in that, described crystallizer links to each other with undercurrent type passage, be divided into overcoat and interior cover, interior cover hot charging graphite cannula, graphite cannula contacts with high-temperature fusant and forms once cooling, and along casting direction graphite cannula attenuate gradually, once cooling grows from weak to strong; Outer putting by undercurrent type passage one side has ring flange, is water cavity between overcoat and the interior cover, passes to cooling water, and cooling water forms the secondary cooling from crystallizer tail end ejection cooling ingot blank.
8, according to claim 1 or 7 described magnesium alloy underflow type horizontal continuous casting machines, it is characterized in that described undercurrent type passage, internal diameter 50mm.
9, according to claim 1 or 7 described magnesium alloy underflow type horizontal continuous casting machines, it is characterized in that described crystallizer is processed by red copper, wall thickness 5mm.
10, magnesium alloy underflow type horizontal continuous casting machine according to claim 1, it is characterized in that, the roll forming of the upper and lower carry-over pinch rolls of described roll-type haulage gear is identical with the ingot blank shape of being cast, the geometric center of geometric center and crystallizer drives carry-over pinch rolls by direct current generator on same level height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610117885 CN1943911A (en) | 2006-11-02 | 2006-11-02 | Magnesium alloy underflow type horizontal continuous casting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610117885 CN1943911A (en) | 2006-11-02 | 2006-11-02 | Magnesium alloy underflow type horizontal continuous casting machine |
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| CN1943911A true CN1943911A (en) | 2007-04-11 |
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| CN 200610117885 Pending CN1943911A (en) | 2006-11-02 | 2006-11-02 | Magnesium alloy underflow type horizontal continuous casting machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836975A (en) * | 2011-06-24 | 2012-12-26 | 北京有色金属研究总院 | Zinc alloy horizontal continuous casting system solidified under pressure and vibration |
| CN103341621A (en) * | 2013-07-03 | 2013-10-09 | 大连理工大学 | Subsurface-flow casting method |
| CN105344958A (en) * | 2015-10-30 | 2016-02-24 | 东北大学 | Same-level multi-strand continuous casting device and method for magnesium alloy |
| CN105522125A (en) * | 2016-01-22 | 2016-04-27 | 浙江天宁合金材料有限公司 | Device for overcoming blow hole defect of horizontal continuous casting products of lead brass |
-
2006
- 2006-11-02 CN CN 200610117885 patent/CN1943911A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836975A (en) * | 2011-06-24 | 2012-12-26 | 北京有色金属研究总院 | Zinc alloy horizontal continuous casting system solidified under pressure and vibration |
| CN103341621A (en) * | 2013-07-03 | 2013-10-09 | 大连理工大学 | Subsurface-flow casting method |
| CN103341621B (en) * | 2013-07-03 | 2015-04-08 | 大连理工大学 | Subsurface-flow casting method |
| CN105344958A (en) * | 2015-10-30 | 2016-02-24 | 东北大学 | Same-level multi-strand continuous casting device and method for magnesium alloy |
| CN105522125A (en) * | 2016-01-22 | 2016-04-27 | 浙江天宁合金材料有限公司 | Device for overcoming blow hole defect of horizontal continuous casting products of lead brass |
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Open date: 20070411 |