CN103469032B - A kind of production technique of automobile aluminum alloy sheet - Google Patents
A kind of production technique of automobile aluminum alloy sheet Download PDFInfo
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Abstract
The invention discloses a kind of production technique of automobile aluminum alloy sheet, does is in this aluminium alloy, the mass percent of each element: Mg 0.8-1.2, Si 0.6-1.1, Cu 0.3-0.5, Fe 0.2-0.3, Mn 0.5-0.8, Zn 0.1-0.2, Ti 0.05-0.15, Bi 0.4-0.7, Sb 0.3-0.5, Ga 0.1-0.2, Y 0.04-0.06, Ce 0.03-0.05, Pm 0.02-0.03, surplus is aluminium.The present invention carrys out crystal grain thinning by adding the multiple alloying element such as a small amount of Y, Ce, Pm, Ga, Bi, change recrystallize state, put forward the performance such as heavy alloyed hot strength and antifatigue, wear-resisting, shock resistance, improve the techniques such as casting, rolling and thermal treatment simultaneously and obtain good over-all properties.The aluminum alloy plate materials that the present invention obtains has excellent intensity, wear resistance, shock resistance, antifatigue and the performance such as high temperature resistant, can be widely used in the various component such as body of a motor car, wheel, fuel tank, cylinder body.
Description
Technical field
The present invention relates to a kind of production technique of aluminium alloys for automobile Strip, belong to aluminum alloy materials technical field.
Background technology
The use of aluminium alloy on vehicle is in recent years paid attention to widely, and the material (as steel, plastics etc.) substituting other, as automobile component, can be used for the structures such as body of a motor car, wheel, fuel tank, aluminium pot, machine cover plate, motor casing.Although aluminium alloy has good moldability, thermal conductivity is good, plasticity is good, intensity advantages of higher, its antifatigue, shock resistance, wear resistance and resistance to elevated temperatures need to improve.
Summary of the invention
In order to solve the problem, the invention provides the production technique of the aluminium alloys for automobile Strip of a kind of hot strength high, moulding good, high impact-resistant, high abrasion, highly anti-fatigue, extending the work-ing life of aluminum alloy materials.
The technical solution used in the present invention is as follows:
A production technique for automobile aluminum alloy sheet, is characterized in that comprising the following steps:
(1) following requirement is met according to element mass percent: Mg0.8-1.2, Si0.6-1.1, Cu0.3-0.5, Fe0.2-0.3, Mn0.5-0.8, Zn0.1-0.2, Ti0.05-0.15, Bi0.4-0.7, Sb0.3-0.5, Ga0.1-0.2, Y0.04-0.06, Ce0.03-0.05, Pm0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and carry out melting at 730-750 DEG C, treat that metal all melts, after stirring, at the middle part of the aluminium liquid degree of depth, burner hearth both sides respectively get a sample and analyze, analyze qualified after get final product converter;
(2), after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place refining agent powder being sprayed into the aluminium liquid degree of depth carries out refining, nitrogen pressure is 1.2-1.5kg/mm, refining temperature is 715-725 DEG C, and refining time is 20-30min, leaves standstill 20-30min after refining;
(3) filter with 14 order glass fiber cloth before casting, oxide compound, slag inclusion in abundant elimination melt, then cast, and casting temp is 685-705 DEG C;
(4) alloy cast ingot is first warming up to 180-220 DEG C with 80-90 DEG C/h, insulation 5-10h, then is warming up to 330-360 DEG C with 70-80 DEG C/h, insulation 10-15h, be warming up to 480-500 DEG C with 100-120 DEG C/h again, insulation 3-5h, is then cooled to 280-320 DEG C with 80-100 DEG C/h, insulation 14-18h, be warming up to 460-480 DEG C with 70-80 DEG C/h again, insulation 5-10h, then be cooled to 220-250 DEG C with 150-180 DEG C/h, insulation 4-6h, air-cooled to room temperature; After homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the defects such as casting knurl on ingot casting surface;
(5) ingot casting after being washed by blunderbuss is heated to 450-470 DEG C, being hot-rolled down to thickness is 6-8mm, being cold-rolled to thickness is again 2-3mm, is then warming up to 220-240 DEG C with 90-110 DEG C/h, insulation 2-3h, 360-380 DEG C is warming up to again with 60-80 DEG C/h, insulation 1-2h, is then cooled to 170-190 DEG C with 80-100 DEG C/h, insulation 3-4h, being cold-rolled to thickness after air cooling to room temperature is 1.5-2mm, and total deformation reaches more than 85%;
(6) sheet material after shaping is warming up to 80-90 DEG C with 30-40 DEG C/h, insulation 4-6h, then is warming up to 150-180 DEG C with 40-50 DEG C/h, insulation 2-3h, then be cooled to 90-100 DEG C with 30-40 DEG C/h, insulation 3-5h, air cooling to room temperature through finishing, inspect for acceptance, pack and get product.
Described refining agent preparation method is as follows: a. takes the raw material of following weight part: SODIUMNITRATE 10-15, magnesium chloride 12-16, Sodium Silicofluoride 5-10, bariumchloride 4-8, refractory brick bits 5-10, norbide 4-8, Zirconium tetrafluoride 3-6, loess 8-12, attapulgite 5-10; B. above-mentioned refractory brick bits, attapulgite, loess are pulverized 300-500 mesh sieve, after mixing, add norbide and Zirconium tetrafluoride, 4000-5000rpm speed lapping 5-10min, then calcines 3-5h at 1050-1250 DEG C, then shrend cooling, grind, stand-by; C. mixed by all the other each raw materials and be heated to 760-780 DEG C, after its whole melting, clarification 1-2h, is poured into water cold quenching by clear liquor above, and obtain broken particle, porphyrize crosses 300-400 mesh sieve, stand-by; D. the mixing of materials that step b, c obtain is stirred and obtains described refining agent.
The de-percentage of admixture of refining agent of the present invention is between 65-75%, and remove the inclusion in aluminium alloy and make that inclusion modification is effective, purification aluminium alloy improves internal soundness, degree of porosity reduces 1-2 degree, is controlled effectively.
Beneficial effect of the present invention:
The present invention carrys out crystal grain thinning by adding the multiple alloying element such as a small amount of Y, Ce, Pm, Ga, Bi, change recrystallize state, put forward the performance such as heavy alloyed hot strength and antifatigue, wear-resisting, shock resistance, improve the techniques such as casting, rolling and thermal treatment simultaneously and obtain good over-all properties.The aluminum alloy plate materials that the present invention obtains has excellent intensity, wear resistance, shock resistance, antifatigue and the performance such as high temperature resistant, can be widely used in the various component such as body of a motor car, wheel, fuel tank, cylinder body, durable in use.
Embodiment
A production technique for automobile aluminum alloy sheet, is characterized in that comprising the following steps:
(1) following requirement is met according to element mass percent: Mg0.8-1.2, Si0.6-1.1, Cu0.3-0.5, Fe0.2-0.3, Mn0.5-0.8, Zn0.1-0.2, Ti0.05-0.15, Bi0.4-0.7, Sb0.3-0.5, Ga0.1-0.2, Y0.04-0.06, Ce0.03-0.05, Pm0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and carry out melting at 740 DEG C, treat that metal all melts, after stirring, at the middle part of the aluminium liquid degree of depth, burner hearth both sides respectively get a sample and analyze, analyze qualified after get final product converter;
(2) after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place refining agent powder being sprayed into the aluminium liquid degree of depth carries out refining, and nitrogen pressure is 1.3kg/mm, and refining temperature is 720 DEG C, and refining time is 25min, leaves standstill 30min after refining;
(3) filter with 14 order glass fiber cloth before casting, oxide compound, slag inclusion in abundant elimination melt, then cast, and casting temp is 700 DEG C;
(4) alloy cast ingot is first warming up to 210 DEG C with 90 DEG C/h, insulation 8h, then is warming up to 340 DEG C with 80 DEG C/h, insulation 12h, be warming up to 490 DEG C with 120 DEG C/h again, insulation 4h, is then cooled to 305 DEG C with 90 DEG C/h, insulation 16h, be warming up to 460 DEG C with 70 DEG C/h again, insulation 10h, then be cooled to 230 DEG C with 160 DEG C/h, insulation 5h, air-cooled to room temperature; After homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the defects such as casting knurl on ingot casting surface;
(5) ingot casting after being washed by blunderbuss is heated to 460 DEG C, being hot-rolled down to thickness is 7mm, being cold-rolled to thickness is again 2.5mm, is then warming up to 230 DEG C with 100 DEG C/h, insulation 3h, 375 DEG C are warming up to again with 70 DEG C/h, insulation 1h, is then cooled to 180 DEG C with 90 DEG C/h, insulation 3h, being cold-rolled to thickness after air cooling to room temperature is 2mm, and total deformation reaches more than 85%;
(6) sheet material after shaping is warming up to 90 DEG C with 40 DEG C/h, insulation 5h, then is warming up to 160 DEG C with 50 DEG C/h, insulation 3h, is then cooled to 100 DEG C with 40 DEG C/h, insulation 4h, air cooling to room temperature through finishing, inspect for acceptance, pack and get product.
Described refining agent preparation method is as follows: a. takes the raw material of following weight (kg): SODIUMNITRATE 12, magnesium chloride 15, Sodium Silicofluoride 8, bariumchloride 6, refractory brick bits 8, norbide 6, Zirconium tetrafluoride 4, loess 10, attapulgite 10; B. above-mentioned refractory brick bits, attapulgite, loess were pulverized 500 mesh sieves, and after mixing, added norbide and Zirconium tetrafluoride, 5000rpm speed lapping 6min, then calcines 4h at 1150 DEG C, and then shrend cooling, grinds, stand-by; C. mixed by all the other each raw materials and be heated to 780 DEG C, after its whole melting, clarification 1h, is poured into water cold quenching by clear liquor above, and obtain broken particle, porphyrize crosses 400 mesh sieves, stand-by; D. the mixing of materials that step b, c obtain is stirred and obtains described refining agent.
The aluminum alloy plate materials of gained through inspection mechanical property is: tensile strength 377Mpa, yield strength is 268Mpa, and elongation is 14.6%.
Claims (2)
1. the production technique of an automobile aluminum alloy sheet, it is characterized in that comprising the following steps: (1) meets following requirement according to element mass percent: Mg0.8-1.2, Si0.6-1.1, Cu0.3-0.5, Fe0.2-0.3, Mn0.5-0.8, Zn0.1-0.2, Ti0.05-0.15, Bi0.4-0.7, Sb0.3-0.5, Ga0.1-0.2, Y0.04-0.06, Ce0.03-0.05, Pm0.02-0.03, surplus is that Al prepares burden, furnace charge is dropped into smelting furnace and carry out melting at 730-750 DEG C, treat that metal all melts, after stirring, at the middle part of the aluminium liquid degree of depth, burner hearth both sides are respectively got a sample and are analyzed, analyze qualified after get final product converter, (2), after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place refining agent powder being sprayed into the aluminium liquid degree of depth carries out refining, nitrogen pressure is 1.2-1.5kg/mm, refining temperature is 715-725 DEG C, and refining time is 20-30min, leaves standstill 20-30min after refining, (3) filter with 14 order glass fiber cloth before casting, oxide compound, slag inclusion in abundant elimination melt, then cast, and casting temp is 685-705 DEG C, (4) alloy cast ingot is first warming up to 180-220 DEG C with 80-90 DEG C/h, insulation 5-10h, then is warming up to 330-360 DEG C with 70-80 DEG C/h, insulation 10-15h, be warming up to 480-500 DEG C with 100-120 DEG C/h again, insulation 3-5h, is then cooled to 280-320 DEG C with 80-100 DEG C/h, insulation 14-18h, be warming up to 460-480 DEG C with 70-80 DEG C/h again, insulation 5-10h, then be cooled to 220-250 DEG C with 150-180 DEG C/h, insulation 4-6h, air-cooled to room temperature, after homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the casting knurl on ingot casting surface, (5) ingot casting after being washed by blunderbuss is heated to 450-470 DEG C, being hot-rolled down to thickness is 6-8mm, being cold-rolled to thickness is again 2-3mm, is then warming up to 220-240 DEG C with 90-110 DEG C/h, insulation 2-3h, 360-380 DEG C is warming up to again with 60-80 DEG C/h, insulation 1-2h, is then cooled to 170-190 DEG C with 80-100 DEG C/h, insulation 3-4h, being cold-rolled to thickness after air cooling to room temperature is 1.5-2mm, and total deformation reaches more than 85%, (6) sheet material after shaping is warming up to 80-90 DEG C with 30-40 DEG C/h, insulation 4-6h, then is warming up to 150-180 DEG C with 40-50 DEG C/h, insulation 2-3h, then be cooled to 90-100 DEG C with 30-40 DEG C/h, insulation 3-5h, air cooling to room temperature through finishing, inspect for acceptance, pack and get product.
2. the production technique of automobile aluminum alloy sheet according to claim 1, it is characterized in that, described refining agent preparation method is as follows: a. takes the raw material of following weight part: SODIUMNITRATE 10-15, magnesium chloride 12-16, Sodium Silicofluoride 5-10, bariumchloride 4-8, refractory brick bits 5-10, norbide 4-8, Zirconium tetrafluoride 3-6, loess 8-12, attapulgite 5-10; B. above-mentioned refractory brick bits, attapulgite, loess are pulverized 300-500 mesh sieve, after mixing, add norbide and Zirconium tetrafluoride, 4000-5000rpm speed lapping 5-10min, then calcines 3-5h at 1050-1250 DEG C, then shrend cooling, grind, stand-by; C. mixed by all the other each raw materials and be heated to 760-780 DEG C, after its whole melting, clarification 1-2h, is poured into water cold quenching by clear liquor above, and obtain broken particle, porphyrize crosses 300-400 mesh sieve, stand-by; D. the mixing of materials that step b, c obtain is stirred and obtains described refining agent.
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| CN103966471B (en) * | 2014-04-09 | 2016-10-26 | 马鞍山新嘉机械制造有限公司 | A kind of aluminium alloy car preparation of plates method containing metallic tellurium |
| CN103952597A (en) * | 2014-04-10 | 2014-07-30 | 安徽银力铸造有限公司 | Automobile aluminium alloy with high wear resistance |
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| CN104762574A (en) * | 2015-03-29 | 2015-07-08 | 北京工业大学 | Homogenizing treatment method of Al-Zn-Mg alloy semi-continuous casting round ingot for high-speed rails |
| CN105463259A (en) * | 2015-11-28 | 2016-04-06 | 丹阳市宸兴环保设备有限公司 | Rust-proof metal material of car oil tank |
| CN109504882A (en) * | 2018-12-28 | 2019-03-22 | 宁波帅元电声元件有限公司 | A kind of automobile-used shock bracket and preparation method thereof |
| CN110079704B (en) * | 2019-04-01 | 2020-04-28 | 华南理工大学 | Regenerated wear-resistant wrought aluminum alloy and preparation method thereof |
| CN111575559B (en) * | 2020-07-07 | 2021-06-29 | 福建祥鑫股份有限公司 | Corrosion-resistant 6-series aluminum alloy |
| CN113086075A (en) * | 2021-04-20 | 2021-07-09 | 无锡市佰格运动科技有限公司 | Novel light high strength frame |
| CN114752791B (en) * | 2022-04-18 | 2023-06-27 | 金源(山东)新能源科技发展有限公司 | Al-Sb series motor rotor alloy and preparation method and application thereof |
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