CN100366351C - On line oil bath thermal treating twin roll casting rolling method and apparatus - Google Patents
On line oil bath thermal treating twin roll casting rolling method and apparatus Download PDFInfo
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- CN100366351C CN100366351C CNB2006100457578A CN200610045757A CN100366351C CN 100366351 C CN100366351 C CN 100366351C CN B2006100457578 A CNB2006100457578 A CN B2006100457578A CN 200610045757 A CN200610045757 A CN 200610045757A CN 100366351 C CN100366351 C CN 100366351C
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Abstract
The present invention discloses a method and a device for online oil bath heat treatment two-roller casting. The present invention has the steps that the temperature of molten metal is controlled between 680 and 750 DEG C; the molten metal carries out cooling and casting rolling deformation in a molten pool; the temperature of a casting plate which goes out a casting roller is between 450 and 550 DEG C, the casting rolling speed is between 10 and 90m/min, and the outlet plate thickness is between 0.5 and 3.5mm; the casting plate goes through an oil tank, and the oil tank outlet temperature of the casting plate is controlled between 350 and 100 DEG C; oil brought out from an outlet of the oil tank and the casting plate surface is collected by a collection cooling tank. The device comprises a melting furnace, a pouring basket, a water inlet, a side sealing plate, a casting roller, a squeezing roller, a lower part sealing plate, an oil tank, an oil level meter, an active guiding roller, a guiding roller group, a sealing valve, an outlet squeezing roller, an overflow valve, a circulating oil return system, an oil collection cooling tank, a n oil temperature meter and a heater. The present invention only uses 1/4 of the original SF6. The surface quality is obviously improved, and the base strength is enhanced under the high speed casting rolling. The present invention applies to process various series of magnesium alloy and aluminum alloy casting pieces.
Description
Technical field
The present invention relates to the method and the device of online thermal treating twin roll casting rolling strip, more particularly, a kind of method and device that is used for the online oil bath thermal treating twin roll casting rolling strip of each serial magnesium alloy.
Background technology
Magnesium alloy is the lightest practical structural metallic materials, have advantages such as density is low, specific strength and specific stiffness height, damping shock absorption is good, thermal conductivity is good, effectiveness is good, machinability is good, accessory size is stable, easy recovery, at the existing applicating history for many years of industries such as Aeronautics and Astronautics, automobile, computer, electronics, communication and household electrical appliances.
Most of magnesium alloys have close-packed hexagonal structure, and plastic deformation ability is relatively poor, but have casting character preferably, make that present magnesium-alloy material is in the majority with foundry goods, and plastic process product is few.Traditional magnesium alloy sheet (thickness 1mm is following) is produced and is processed as the master with rolling, but its processing technology is loaded down with trivial details, and the process-cycle is long, and efficient is low, the expense height.Double-roller rolling has merged casting and rolling two technical process, its technical process is: liquid metals is cast to the casting district that is made up of the roll of two subtend rotations and side seal board, liquid metal contact roll also begins to solidify, when solidified layer thickness during greater than roller gap thickness, cast panel is accompanied by rolling processing and along with the rotation of roll breaks away from roll, forms casting sheet material in process of setting.
When adopting twin roll casting rolling method to produce magnesium alloy sheet,, use protection gas for the burning that prevents liquid magnesium alloy and the oxidation of high temperature magnesium alloy.Normally used protection gas SF
6Atmospheric ozone layer is had very strong destruction, and use amount will be restricted.And because SF
6Be heavier than air, a little less than the protection effect of casting roller outlet lower area, consume big.If do not use protection gas, magnesium alloy leaves the roll contact zone, the rapid oxidation of plate face meeting, blackening.Aspect other metal double-roller rollings, be anti-oxidation, also have in casting roller outlet the protective gas device is installed.
On the other hand, because magnesium alloy high temperature (greater than 450 ℃) plasticity is relatively poor, therefore its rolling processing capacity can not be too big in strip casting process, otherwise cause face crack even fracture easily.Therefore need control less rolling processing capacity during casting, just will make the outlet of freezing point near roll, this will cause plate temperature to raise.Under the air cooling condition, the high temperature cast panel is easy to generate surface oxidation on the one hand, and the slow cooling of high temperature causes grain growth easily and makes eutectic phase separate out the intensity that reduces matrix along boundary on the other hand, is easy to generate fire check under the effect of temperature stress.
Summary of the invention
The invention provides a kind of method and device of online oil bath thermal treating twin roll casting rolling, can improve casting ejection speed, prevent the cast panel surface oxidation, reduce pernicious gas SF
6Use amount, that suppresses grain growth after the casting and control eutectic phase separates out form and distribution, improves the intensity of matrix, prevents that crackle from producing.Because there is lubricating oil film in roll surface, can also improve plate face quality, reduce the wearing and tearing of casting roller.
The method of online oil bath thermal treating twin roll casting rolling provided by the invention comprises following content:
A. Rong Hua magnesium alloy solution is delivered in the incorporate tundish and the mouth of a river, and temperature is controlled at 680～750 ℃;
B. with mouth of a river uniform distribution molten metal on body of roll length direction, molten metal cooling and casting in the molten bath of being made up of casting roller and side seal board are out of shape;
C. to go out to cast the temperature of roller be 450-550 ℃ to cast panel, roll casting speed 10-90m/min, and going out plate thickness is 0.5-3.5mm;
D. before the casting by heater oil heating and constant temperature to 50-200 ℃, cast panel enters by the lower seal plate, in the relative airtight space of casting roller and pasta composition, enter in the oil groove then, cast panel drives out oil groove along the guide reel group by drive roll, and in the oil groove exit by the outlet squeeze roll remove the oil on cast panel surface, cast panel goes out oil sump temperature and is controlled at 100-350 ℃.Collect with collecting cooling bath from the oil that oil groove exports and cast panel is worn out.Loop back oil system and overflow valve and make by pasta measuring instrument and fuel temperature measurement instrument that liquid level is higher than the roll lower edge in the oil groove;
E. use squeeze roll to remove the unnecessary oil of casting roller surface, the cast panel that has gone out oil groove directly enters down rolling process one.
Online oil bath thermal treating twin roll casting rolling device provided by the invention comprises with lower member: the incorporate casting tundish and the mouth of a river, side seal board, casting roller, squeeze roll, pasta measuring instrument, oil groove, guide reel group, outlet squeeze roll, melting furnace, lower seal plate, fuel temperature measurement instrument, loop back oil system, oil is collected cooling bath, heater, overflow valve, positive guide roller, sealing valve.
Melting furnace is above the double-roller rolling device, its bottom is the incorporate casting tundish and the mouth of a river, it below the mouth of a river a pair of casting roller, casting roller end face side seal board, the bottom is sealed with the lower seal plate, casting roller roll surface and squeeze roll are close to, below the casting roller is an oil groove that cold oil is housed, pasta measuring instrument, fuel temperature measurement instrument, overflow valve be housed above the oil groove, loop back oil system, oil collects cooling bath, the oil groove the inside is the guide reel group of being furnished with a pair of positive guide roller, and sealing valve, outlet squeeze roll are established in the oil groove outlet.
Online oil bath thermal treating twin roll casting rolling method provided by the invention and device are compared with existing method and device, its obvious improvement and beneficial effect are: by the exit at double-roller continuous casting machine oil groove is installed, be full of in the oil groove and have high burning-point, high temperature resistant, the oil of good cooling when high temperature, liquid level is brought up to part casting roller is immersed in the oil, casting roller, oil and lower seal plate have formed the board space that of sealing, this has just significantly reduced the possibility of ejecting plate high-temperature oxydation, and reduces pernicious gas SF
6Use amount, only use the SF that needed originally
61/4; By the temperature in the control oil groove, but the high temperature cast panel that enters in the oil groove is heat-treated refinement cast panel tissue, and that improves eutectic phase separates out form and distribution, improves the intensity of matrix, and produce the cast panel that does not have surface oxidation, for following process provides good condition.This method and device can be applicable to the casting processing of each serial magnesium alloy and aluminium alloy.
Description of drawings
Fig. 1 is a line oil bath thermal treating twin roll casting rolling device schematic diagram.
The specific embodiment
The present invention is further described below in conjunction with drawings and embodiments.
The particular content of online oil bath thermal treating twin roll casting rolling provided by the invention is as follows:
A. Rong Hua magnesium alloy solution is delivered in the incorporate tundish and the mouth of a river, and temperature is controlled at 680～700 ℃;
B. with mouth of a river uniform distribution molten metal on body of roll length direction, molten metal cooling and casting in the molten bath of being made up of casting roller and side seal board are out of shape;
C. to go out to cast the temperature of roller be 450-500 ℃ to cast panel, roll casting speed 20m/min, and going out plate thickness is 2mm;
D. the oily temperature control in the preceding oil groove of casting is at 50-200 ℃, cast panel enters by the lower seal plate, in the relative airtight space of casting roller and pasta composition, enter in the oil groove then, cast panel drives out oil groove along the guide reel group by drive roll, and in the oil groove exit by the outlet squeeze roll remove the oil on cast panel surface, cast panel goes out oil sump temperature and is controlled at 300-350 ℃.Collect with collecting cooling bath from the oil that oil groove exports and cast panel is worn out.Loop back oil system and overflow valve and make by pasta measuring instrument and fuel temperature measurement instrument that liquid level is higher than roll lower edge 10～20mm in the oil groove;
E. use squeeze roll to remove the unnecessary oil of casting roller surface, the cast panel that has gone out oil groove directly enters down rolling process one.
As shown in Figure 1, online oil bath thermal treating twin roll casting rolling device provided by the invention comprises with lower member: the incorporate casting tundish and the mouth of a river 1, side seal board 2, casting roller 3, squeeze roll 4, pasta measuring instrument 5, oil groove 6, guide reel group 7, outlet squeeze roll 8, melting furnace 9, lower seal plate 10, fuel temperature measurement instrument 11, loop back oil system 12, oil is collected cooling bath 13, overflow valve 14, positive guide roller 15, sealing valve 16, heater 17.
Melting furnace 9 is above the double-roller rolling device, its bottom is the incorporate casting tundish and the mouth of a river 1, it below the mouth of a river a pair of casting roller 3, casting roller end face side seal board 2, the bottom is sealed with lower seal plate 10, casting roller roll surface and squeeze roll 4 are close to, below the casting roller is an oil groove 6 that cold oil is housed, pasta measuring instrument 5 is housed above the oil groove, fuel temperature measurement instrument 11, overflow valve 14, loop back oil system 12, oil is collected cooling bath 13 and heater 17, the oil groove the inside is the guide reel group 7 of being furnished with a pair of positive guide roller 15, and sealing valve 16 is established in the oil groove outlet, outlet squeeze roll 8.
Claims (3)
1. the method for an online oil bath thermal treating twin roll casting rolling is characterized in that comprising following content:
A. Rong Hua magnesium alloy solution is delivered in the incorporate tundish and the mouth of a river, and temperature is controlled at 680～750 ℃;
B. with mouth of a river uniform distribution molten metal on body of roll length direction, molten metal cooling and casting in the molten bath of being made up of casting roller and side seal board are out of shape;
C. to go out to cast the temperature of roller be 450-550 ℃ to cast panel, roll casting speed 10-90m/min, and going out plate thickness is 0.5-3.5mm;
D. before the casting by heater oil heating and constant temperature to 50-200 ℃, cast panel enters by the lower seal plate, in the relative airtight space of casting roller and pasta composition, enter in the oil groove then, cast panel drives out oil groove along the guide reel group by drive roll, and in the oil groove exit by the outlet squeeze roll remove the oil on cast panel surface, cast panel goes out oil sump temperature and is controlled at 100-350 ℃, the oil of wearing out from oil groove outlet and cast panel is with collecting the cooling bath collection, loops back oil system and overflow valve and makes by pasta measuring instrument and fuel temperature measurement instrument that liquid level is higher than the roll lower edge in the oil groove;
E. use squeeze roll to remove the unnecessary oil of casting roller surface, the cast panel that has gone out oil groove directly enters down rolling process one.
2. the method for claim 1 is characterized in that, the temperature that the magnesium alloy solution of fusing is delivered in the incorporate tundish and the mouth of a river is controlled at 680～700 ℃; The temperature that cast panel goes out to cast roller is 450-500 ℃, roll casting speed 20m/min, and going out plate thickness is 2mm; Cast panel goes out oil sump temperature and is controlled at 300-350 ℃; Loop back oil system and overflow valve and make by the pasta measuring instrument that liquid level is higher than roll lower edge 10～20mm in the oil groove.
3. the device that method adopted of the described online oil bath thermal treating twin roll casting rolling of claim 1, it is characterized in that this device comprises with lower member: the incorporate casting tundish and the mouth of a river, side seal board, the casting roller, squeeze roll, the pasta measuring instrument, oil groove, the guide reel group, the outlet squeeze roll, melting furnace, the lower seal plate, the fuel temperature measurement instrument, loop back oil system, oil is collected cooling bath, heater, overflow valve, the positive guide roller, the sealing valve, melting furnace is above the double-roller rolling device, its bottom is the incorporate casting tundish and the mouth of a river, it below the mouth of a river a pair of casting roller, casting roller end face side seal board, the bottom is sealed with the lower seal plate, casting roller roll surface and squeeze roll are close to, below the casting roller is an oil groove that cold oil is housed, the pasta measuring instrument is housed above the oil groove, the fuel temperature measurement instrument, overflow valve, loop back oil system, oil is collected cooling bath and heater, the oil groove the inside is the guide reel group of being furnished with a pair of positive guide roller, and the sealing valve is established in the oil groove outlet, the outlet squeeze roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100457578A CN100366351C (en) | 2006-01-26 | 2006-01-26 | On line oil bath thermal treating twin roll casting rolling method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100457578A CN100366351C (en) | 2006-01-26 | 2006-01-26 | On line oil bath thermal treating twin roll casting rolling method and apparatus |
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| Publication Number | Publication Date |
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| CN1806954A CN1806954A (en) | 2006-07-26 |
| CN100366351C true CN100366351C (en) | 2008-02-06 |
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| CNB2006100457578A Expired - Fee Related CN100366351C (en) | 2006-01-26 | 2006-01-26 | On line oil bath thermal treating twin roll casting rolling method and apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878348B (en) * | 2014-03-24 | 2015-08-19 | 中国重型机械研究院股份公司 | A kind of magnesium alloy board continuous producing apparatus and technique |
| CN108220670B (en) * | 2018-01-11 | 2020-01-21 | 中北大学 | Casting-rolling method and casting-rolling equipment for Cu-Ni-Si-Mg alloy plate strip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202345A (en) * | 1988-02-05 | 1989-08-15 | Kobe Steel Ltd | Method for casting al-mg alloy twin roll |
| EP1245311A1 (en) * | 2001-03-26 | 2002-10-02 | Tetsuichi Motegi | Method and apparatus for production of platelike metal material |
| WO2004076097A1 (en) * | 2003-02-28 | 2004-09-10 | Commonwealth Scientific And Industrial Research Organisation | Magnesium alloy sheet and its production |
| CN1537969A (en) * | 2003-09-23 | 2004-10-20 | 东北大学 | Manufacturing method of high-plasticity magnesium alloy band |
| CN1684784A (en) * | 2002-08-29 | 2005-10-19 | 联邦科学和工业研究组织 | Twin roller casting of magnesium and magnesium alloys |
-
2006
- 2006-01-26 CN CNB2006100457578A patent/CN100366351C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202345A (en) * | 1988-02-05 | 1989-08-15 | Kobe Steel Ltd | Method for casting al-mg alloy twin roll |
| EP1245311A1 (en) * | 2001-03-26 | 2002-10-02 | Tetsuichi Motegi | Method and apparatus for production of platelike metal material |
| CN1684784A (en) * | 2002-08-29 | 2005-10-19 | 联邦科学和工业研究组织 | Twin roller casting of magnesium and magnesium alloys |
| WO2004076097A1 (en) * | 2003-02-28 | 2004-09-10 | Commonwealth Scientific And Industrial Research Organisation | Magnesium alloy sheet and its production |
| CN1537969A (en) * | 2003-09-23 | 2004-10-20 | 东北大学 | Manufacturing method of high-plasticity magnesium alloy band |
Non-Patent Citations (4)
| Title |
|---|
| 双辊薄带铸轧工艺的进展. 巨东英，赵红阳，胡林，赵连钢，段振虎.鞍山科技大学学报，第26卷第3期. 2003 * |
| 双辊铸轧法生产变形镁合金薄带新工艺的研究. 李铮，赵凯，邸洪双，王国栋.轻金属，第12期. 2003 * |
| 双辊铸轧薄带工艺中的相关技术. 胡林，赵连钢，段振虎，赵红阳，巨东英.轧钢，第21卷第1期. 2004 * |
| 镁合金的双辊板带连续铸轧技术. 张莹，耿茂鹏，王艳春，张庭芳，谢水生.铸造技术，第26卷第1期. 2005 * |
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| CN1806954A (en) | 2006-07-26 |
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Granted publication date: 20080206 Termination date: 20170126 |