CN100400198C - Double roll super high speed continuous casting production line for thin magnesium strip - Google Patents
Double roll super high speed continuous casting production line for thin magnesium strip Download PDFInfo
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- CN100400198C CN100400198C CNB031439799A CN03143979A CN100400198C CN 100400198 C CN100400198 C CN 100400198C CN B031439799 A CNB031439799 A CN B031439799A CN 03143979 A CN03143979 A CN 03143979A CN 100400198 C CN100400198 C CN 100400198C
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Abstract
The present invention provides a double-roller super high speed continuous casting production line for a thin magnesium plate strip, which belongs to the field of metal melting and casting technology. The present invention relates to technical equipment for smelting and continuously casting magnesium and magnesium alloy, particularly to a double-roller super high speed continuous casting production line for a thin magnesium and magnesium alloy plate strip. The production line mainly comprises a smelting furnace, a heat insulation furnace, an integral front box overflow nozzle, an active type siphon pipe and a double-roller super high speed continuous casting machine, wherein the smelting furnace, the heat insulation furnace and the double-roller super high speed continuous casting machine adopt stage type installation. Magnesium liquid transport adopts the active type siphon pipe. A ceramic foam filter is respectively arranged in the heat insulation furnace and the integral front box overflow nozzle. A lubricant is sprayed on double rollers, and gas protection is adopted in the process of production. A rapid solidification system is used for innovating process flow so as to reduce the production cost of the magnesium plate strip and enhance productivity. Thus, gradually increased requirements for the thin magnesium alloy plate strip by magnesium industrial development can be met.
Description
Technical field
The invention belongs to smelting non-ferrous metal and foundry engieering, equipment, especially belong to magnesium and magnesium alloy sheet band continuous casting equipment unit.
Technical background
At present magnesium alloy plate is to adopt extruding and rolling method manufacturing basically, and shortcoming is that complex process, productivity ratio are low, price is high, width is little, thin more difficulty more etc.Magnesium alloy belongs to the close-packed hexagonal crystal structure, have only a slide surface in room temperature, so the plastic deformation ability of magnesium alloy is than aluminium alloy difference.General magnesium alloy extruding requires magnesium alloy ingot to strip off the skin earlier, and the blank that strips off the skin, extrusion die and pressure measuring cylinder all will be preheating to extrusion temperature, and typical extrusion temperature is 300-450 ℃, and extrusion ratio is got about 10-100 usually.Because friction and distortion in extrusion process produce a large amount of heat, also might cause the product burning, become waste product.From the sheet material that extruder comes out, bending is bigger, could use after needing to correct, but because coercivity is very big, rectification need be carried out after annealing or at a certain temperature.In addition, residual stress is very big in the plate, also should not directly use.This shows that the production cost of extruding is very high.The cold rolling poor performance of magnesium alloy, thickness are the generally palpus hot rolling of slab of 11-70 millimeter, and thickness is that the thin plate of 0.8-10 millimeter generally adopts hot rolling or cold rolling.Because the magnesium alloy slip system is few, plasticity is poor, and resistance of deformation is big, the sensitiveness of cold rolling sclerosis is strong, and coercivity is very big, and very sensitive to rate of straining, the deformation temperature narrow range, viscosity is big, and is mobile poor, volumetric heat capacity is little, and therefore the easy oxidizing fire of high temperature etc. no matter be hot rolling or cold rolling, rolling condition is required tight, for example the temperature of roll preferably will maintain 200-250 ℃ the little volume under pressure of scope, multi-pass, and operation is numerous and diverse, produces difficulty.Especially for the magnesium alloy thin sheet material of thickness below 1 millimeter, the production difficulty is bigger, and cost is higher.
The tissue of the magnesium alloy anode sheet material of producing with extruding or milling method is anticorrosive very unfavorable to battery, especially Bao magnesium alloy anode sheet material, the one, product defects is many, the 2nd, crystal grain, crystal boundary, impurity, superfluous phase and defective are elongated significantly along the surface, form the corrosion micro cell of sheet, thereby promote breakaway corrosion.The technology itself of extruding or rolling magnesium alloy plate can cause that residual stress is arranged in the light sheet, and except general corrosion resistance difference, Sensitivity of Stress Corrosion is also stronger, and the magnesium alloy thin slice counter stress corrosion susceptibility that uses at magnesium manganese laminated cell is the strongest.The tissue of extruding or rolling magnesium alloy plate is not suitable for the requirement of magnesium cell anode, and stress corrosion and breakaway corrosion take place the both easily, cause the anode material stratiform to peel off, and reduces the utilization rate of magnesium.
Extruding and milling method are made the needs that the magnesium alloy plate production procedure can not be satisfied the magnesium industry development.Development and Production rate height, production cost continuous casting technology and equipment unit low, the measured magnesium alloy plate of matter have very significant meaning.This type of technology and equipment unit all is the forward position research and development problem of present world magnesium industry circle,
The difficulty reason: roll gap stem bar difficult design, process of setting control and complete machine interlock difficult coordination, speed is too fast.
Overcome method: utilize the flash set technology system separately to coagulate together and moulding, the innovation flow process.
Also be not used in the twin-roll continuous casting unit that the magnesium sheet band is produced both at home and abroad.Because compare with other material, the greatest difficulty of the twin-roll continuous casting of magnesium sheet band is the as easy as rolling off a log oxidation of magnesium alloy liquation, burning even blast.In addition, the thermal capacitance of magnesium alloy and latent heat are less, deformation performance is relatively poor.Therefore the design of the twin-roll continuous casting of magnesium alloy must meet the characteristics of magnesium alloy, because violent chemical reaction takes place with nearly all refractory material that is used for aluminium alloy in magnesium alloy easily, the melting of magnesium alloy and continuous mode of movement are different from aluminium alloy, the casting roller lubricant of aluminium alloy is not suitable for magnesium alloy yet, so existing aluminum alloy plate materials twin-roll continuous casting unit is not suitable for the production of magnesium alloy plate.The thermal capacitance of magnesium alloy and latent heat are also little than aluminium alloy, and the control of casting process technology is difficulty relatively.Especially the magnesium alloy liquation is very harsh to the material requirements of feed mouth at strip casting process, the certain high temperature mechanical performance should be arranged, good heat insulating, the reaction of different liquid magnesium alloy also should have the ability that prevents the liquid magnesium alloy burning again, and existing material can't meet the demands.
Summary of the invention
The present invention seeks to: a kind of two roller high-speed continuous casting production lines that are applicable to that magnesium and magnesium alloy sheet band are produced are provided.
The two roller high-speed continuous casting production lines of magnesium sheet band mainly comprise: smelting furnace (1), holding furnace (2), two roller high-speed continuous casting machines (6), integrated preceding case overflow lip (5), active siphon pipe (3,4).Smelting furnace (1), holding furnace (2) are adopted in the acquisition of liquid magnesium alloy, and carry out melting and insulation under gas shield, to satisfy in a large number and the continuously supply requirement of two roller high-speed continuous casting machines to the high-quality liquid magnesium alloy.Carry for the safety and steady that guarantees liquid magnesium alloy, adopt smelting furnace (1), holding furnace (2), two roller high-speed continuous casting machines (6) staged to install.Magnesium liquid is carried to shift between smelting furnace (1) and holding furnace (2) and is adopted active siphon pipe (3), and magnesium liquid shifts in the conveying of holding furnace (2) and two roller high-speed continuous casting machine (6) equipment rooms and adopts active siphon pipe (4).Be mingled with and the double-roller continuous casting machine requirement magnesium alloy liquation supply of high purification continuously the method that adopts magnesia ceramic foam filter (7) to filter based on easy formation of magnesium alloy liquation.Before the case overflow lip adopt integrated design, make simple in structure, area of dissipation is little, magnesium alloy liquation flow process is short in case oxidation and constricted flow problem.In order to prevent the heat insulation effect of preceding case of the same case of liquid magnesium alloy and overflow lip generation chemical reaction and raising and overflow lip, integrated preceding case overflow lip (5) adopts crucible constant temperature oven structure, and overflow lip liner polymorphic structure material adopts extraordinary composite manufacturing.The casting process liquid magnesium alloy is with needing lubricant control liquid magnesium alloy with heat exchange and diffusion and chemical reaction etc. between two rollers between two rollers, lubricant adopts with the magnesium alloy liquation chemical reaction, polluted product does not take place, have the magnesium alloy of prevention liquation burning capacity simultaneously, with two rollers in conjunction with good suspension.
Description of drawings
In the accompanying drawing 1, smelting furnace, 2, holding furnace, 3,4 active siphon pipes, 5, integrated before the case overflow lip, 6, two roller high-speed continuous casting machine, 7, magnesia ceramic foam filter.
Briefly explain below in conjunction with the accompanying drawing content:
Smelting furnace (1) is with resistance furnace or main frequency furnace melting Magnesium and magnesium alloys, and holding furnace (2) is protected with resistance The temperature stove is processed the Magnesium and magnesium alloys liquation, adopts tabular magnesia ceramic foam filter in holding furnace (2) (7) cutting apart liquation is two parts; Smelting furnace (1), holding furnace (2), two roller high-speed continuous casting machines (6) Be that staged is installed, carry magnesium with active mode siphon pipe (3) between smelting furnace (1) and holding furnace (2) And liquid magnesium alloy, use active mode siphon pipe between holding furnace (2) and two roller high-speed continuous casting machine (6) equipment (4) carry Magnesium and magnesium alloys liquid. In the integrated front case overflow lip (5) magnesia ceramic foam is installed Filter, the stream lip of integrated front case overflow lip (5) is (solidifying with the lower roll of two roller high-speed continuous casting machines (6) Gu roller) the side kiss connects; Two roller high-speed continuous casting machines (6) adopt the horizontal casting mode.
The specific embodiment:
Embodiment:
The melting heat-insulation system of magnesium adopts the twin-stage stove of smelting furnace (1) and holding furnace (2), smelting furnace (1), holding furnace (2), two roller high-speed continuous casting machines (6) adopt step-wise manner to install, melting furnace resistor stove or main frequency furnace melting magnesium and magnesium alloy, handle magnesium and magnesium alloy liquation with electric resistance holding furnace, carry magnesium and liquid magnesium alloy with active siphon pipe (3,4), adopting tabular magnesia ceramic foam filter (7) to cut apart liquation in holding furnace (2) is two parts; In the case overflow lip (5) magnesia ceramic foam filter is installed before integrated, magnesium liquid is thermostatic control in the preceding case, the magnesium melt liquid surface height controlling adopts automatically and manual dual control device, and the stream lip of integrated preceding case overflow lip (5) connects with lower roll (solidifying roller) the side kiss of two roller high-speed continuous casting machines (6); Two roller high-speed continuous casting machines (6) adopt the horizontal casting mode, the roller linear resonance surface velocity is 10～100 meters/minute, by the rotating speed of regulating two rollers, the heat-transfer rate of roller, the degree of depth and the temperature of overflow lip stream lip place liquid, can produce the magnesium alloy sheet band of 0.1～3mm different-thickness, different cultivars; The suspension that the lubricant on two rollers surface is made up of magnesium hydroxide 2～3%, sodium alkyl sulfonate 0.3%, potassium fluoborate 1% and distilled water.Whole process of production adopts gas shield.
It is same as the prior art that present embodiment is not stated part.
The two roller high-speed continuous casting production lines of magnesium sheet band of the present invention carry out the productivity continuous casting experiment of the magnesium alloy sheet band of 0.1～3mm thickness, and operations is functional, requirement up to specification.The two roller high-speed continuous casting production lines of magnesium sheet band of the present invention have productivity ratio height, safe and reliable, reduced investment, and the magnesium alloy thin plate and band material amount of being produced is good.
Claims (6)
1. the two roller high-speed continuous casting production lines of magnesium sheet band mainly comprise: smelting furnace (1), holding furnace (2), active siphon pipe (3,4), case overflow lip (5) before integrated, two roller high-speed continuous casting machines (6), the smelting equipment that it is characterized in that magnesium or magnesium alloy is made up of multistage stove, smelting furnace (1), holding furnace (2) and two roller high-speed continuous casting machine (6) adopt staged to lay, the conveying of magnesium liquid is shifted and is adopted active siphon pipe (3,4), magnesium liquid is carried to shift between smelting furnace (1) and holding furnace (2) and is adopted active siphon pipe (3), magnesium liquid shifts in the conveying of holding furnace (2) and two roller high-speed continuous casting machine (6) equipment rooms and adopts active siphon pipe (4), the stream lip of case overflow lip (5) connects with the lower roll side kiss of two roller high-speed continuous casting machines (6) before integrated, by rotating two rollers the magnesium alloy sheet band of liquid metals towing moulding different cultivars.
2. the two roller high-speed continuous casting production lines of magnesium sheet band according to claim 1 is characterized in that: melting furnace resistor stove or main frequency furnace melting magnesium and magnesium alloy, insulation furnace resistor stove is handled magnesium and magnesium alloy liquation.
3. the two roller high-speed continuous casting production lines of magnesium sheet band according to claim 1, it is characterized in that: magnesium liquid is thermostatic control in the preceding case of integrated preceding case overflow lip, the magnesium melt liquid surface height controlling adopts automatically and manual dual control device.
4. the two roller high-speed continuous casting production lines of magnesium sheet band according to claim 1 is characterized in that: holding furnace (2) and integrated before magnesia ceramic foam filter is installed in the case overflow lip (5).
5. the two roller high-speed continuous casting production lines of magnesium sheet band according to claim 1, it is characterized in that: whole process of production adopts gas shield.
6. the two roller high-speed continuous casting production lines of magnesium sheet band according to claim 1 is characterized in that: the suspension that the lubricant that two rollers use is made up of magnesium hydroxide 2～3%, sodium alkyl sulfonate 0.3%, potassium fluoborate 1% and distilled water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031439799A CN100400198C (en) | 2003-08-07 | 2003-08-07 | Double roll super high speed continuous casting production line for thin magnesium strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031439799A CN100400198C (en) | 2003-08-07 | 2003-08-07 | Double roll super high speed continuous casting production line for thin magnesium strip |
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| Publication Number | Publication Date |
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| CN1473675A CN1473675A (en) | 2004-02-11 |
| CN100400198C true CN100400198C (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031439799A Expired - Fee Related CN100400198C (en) | 2003-08-07 | 2003-08-07 | Double roll super high speed continuous casting production line for thin magnesium strip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2567760A1 (en) * | 2010-04-27 | 2013-03-13 | Sun Xing Chemical & Metallurgical Materials (Shenzhen) Co. Ltd. | High-efficiency continuous casting-rolling method for forming magnesium alloy plate |
| CN103586305A (en) * | 2013-11-26 | 2014-02-19 | 山东银光钰源轻金属精密成型有限公司 | Plate expanding machine for magnesium pipe |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463744C (en) * | 2006-05-09 | 2009-02-25 | 赣南师范学院 | Casting machine with vacuum siphon tapped magnesium alloy |
| CN100417471C (en) * | 2006-05-19 | 2008-09-10 | 清华大学 | Over-flow type maguesium alloy melt quantitative transfering apparatus |
| CN100463732C (en) * | 2006-05-22 | 2009-02-25 | 苏州有色金属加工研究院 | Casting-rolling process and equipment for magnesium alloy slab |
| CN103722140A (en) * | 2014-01-17 | 2014-04-16 | 上海西重所重型机械成套有限公司 | Continuous cast-rolling process and continuous cast-rolling process system for magnesium alloy plate and strip |
| CN105689670A (en) * | 2016-04-19 | 2016-06-22 | 江苏中科亚美新材料有限公司 | Magnesium alloy production operation line |
| CN106735077B (en) * | 2016-12-29 | 2020-08-25 | 江苏中翼汽车新材料科技有限公司 | Double-furnace die-casting alloy smelting device |
| CN107116189B (en) * | 2017-06-26 | 2023-03-21 | 太原科技大学 | Magnesium alloy casting-rolling liquid supply system and alloy liquid level control method thereof |
| CN111780553B (en) * | 2020-05-14 | 2022-04-12 | 西安航空职业技术学院 | Refined magnesium liquid transfer device |
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| US4960164A (en) * | 1988-01-26 | 1990-10-02 | Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. | Method of continuously casting a thin strip |
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| JPH10102178A (en) * | 1996-09-25 | 1998-04-21 | Furukawa Electric Co Ltd:The | Directly cast and rolled sheet of al-mg-si alloy, and its production |
| JPH10296403A (en) * | 1997-05-01 | 1998-11-10 | Sumitomo Metal Ind Ltd | Method for controlling strip thickness in twin-roll caster |
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Patent Citations (9)
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| CN86101396A (en) * | 1985-03-05 | 1986-11-19 | 克洛纳·洪堡·多茨 | The equipment and the method that are used for the melted metal insulation |
| CN85100314B (en) * | 1985-04-01 | 1987-10-07 | 东北工学院 | Asynchronous constant extension rolldown speed proportion technique and the device |
| US4960164A (en) * | 1988-01-26 | 1990-10-02 | Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. | Method of continuously casting a thin strip |
| CN1013080B (en) * | 1988-03-02 | 1991-07-10 | 北京科技大学 | A kind of cold-rolled thin sheet asymmetrical rolling new technology |
| JPH0810909A (en) * | 1994-06-22 | 1996-01-16 | Sumitomo Metal Ind Ltd | Casting method by strip continuous casting apparatus of twin roll side pouring type |
| JPH0910897A (en) * | 1995-06-22 | 1997-01-14 | Sumitomo Metal Ind Ltd | Method for continuously casting thin cast strip |
| JPH10102178A (en) * | 1996-09-25 | 1998-04-21 | Furukawa Electric Co Ltd:The | Directly cast and rolled sheet of al-mg-si alloy, and its production |
| JPH10296403A (en) * | 1997-05-01 | 1998-11-10 | Sumitomo Metal Ind Ltd | Method for controlling strip thickness in twin-roll caster |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2567760A1 (en) * | 2010-04-27 | 2013-03-13 | Sun Xing Chemical & Metallurgical Materials (Shenzhen) Co. Ltd. | High-efficiency continuous casting-rolling method for forming magnesium alloy plate |
| EP2567760A4 (en) * | 2010-04-27 | 2013-11-20 | Sun Xing Chemical & Metallurg Materials Shenzhen Co Ltd | High-efficiency continuous casting-rolling method for forming magnesium alloy plate |
| CN103586305A (en) * | 2013-11-26 | 2014-02-19 | 山东银光钰源轻金属精密成型有限公司 | Plate expanding machine for magnesium pipe |
| CN103586305B (en) * | 2013-11-26 | 2015-09-23 | 山东银光钰源轻金属精密成型有限公司 | A kind of magnesium pipe panel machine |
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| Publication number | Publication date |
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| CN1473675A (en) | 2004-02-11 |
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