CN103469032A - Production technology of automobile aluminum alloy sheet - Google Patents
Production technology of automobile aluminum alloy sheet Download PDFInfo
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Abstract
The invention discloses a production technology of an automobile aluminum alloy sheet. The above aluminum alloy comprises, by mass, 0.8-1.2% of Mg, 0.6-1.1% of Si, 0.3-0.5% of Cu, 0.2-0.3% of Fe, 0.5-0.8% of Mn, 0.1-0.2% of Zn, 0.05-0.15% of Ti, 0.4-0.7% of Bi, 0.3-0.5% of Sb, 0.1-0.2% of Ga, 0.04-0.06% of Y, 0.03-0.05% of Ce, 0.02-0.03% of Pm, and the balance Al. Small amounts of a plurality of alloy elements comprising Y, Ce, Pm, Ga, Bi and the like are added to refine crystal grains and change the recrystallization state, so the high temperature strength, the fatigue resistance, the wear resistance, the impact resistance and the like of the alloy are improved, casting, rolling and heat treatment technologies are improved, and good comprehensive performances are obtained. The aluminum alloy sheet produced in the invention has excellent strength, wear resistance, impact resistance, fatigue resistance, high temperature resistance and the like, and can be widely used in all components of the body, wheels, fuel tank, cylinder body and the like of an automobile.
Description
Technical field
The present invention relates to a kind of production technique of aluminium alloys for automobile Strip, belong to the aluminum alloy materials technical field.
Background technology
The use of aluminium alloy on vehicle in recent years paid attention to widely, substitutes other material (as steel, plastics etc.) 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, the 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 address the above problem, the invention provides the production technique of the aluminium alloys for automobile Strip of high, moulding good, the high impact-resistant of a kind of hot strength, high abrasion, highly anti-fatigue, extend the work-ing life of aluminum alloy materials.
The technical solution used in the present invention is as follows:
A kind of production technique of aluminium alloys for automobile sheet material is characterized in that comprising the following steps:
(1) meet following the requirement according to the element mass percent: 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 that Al is prepared burden, furnace charge is dropped into to smelting furnace carry out melting under 730-750 ℃, treat that metal all melts, after stirring, middle part in the aluminium liquid degree of depth, the burner hearth both sides are respectively got a sample and are analyzed, analyze after qualified and get final product converter,
(2) after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place that the refining agent powder is sprayed into to the aluminium liquid degree of depth carries out refining, nitrogen pressure is 1.2-1.5kg/mm, refining temperature is 715-725 ℃, and refining time is 20-30min, standing 20-30min after refining;
(3) before the casting, with 14 order glass fiber cloth, filter, fully oxide compound, the slag inclusion in the elimination melt, then cast, and casting temp is 685-705 ℃;
(4) alloy cast ingot first is warming up to 180-220 ℃ with 80-90 ℃/h, insulation 5-10h, then be warming up to 330-360 ℃ with 70-80 ℃/h, insulation 10-15h, with 100-120 ℃/h, be warming up to 480-500 ℃, insulation 3-5h, then be cooled to 280-320 ℃ with 80-100 ℃/h again, insulation 14-18h, be warming up to 460-480 ℃ with 70-80 ℃/h again, insulation 5-10h, then be cooled to 220-250 ℃ with 150-180 ℃/h, insulation 4-6h, air-cooled to room temperature; After homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the defect such as the lip-deep casting knurl of ingot casting;
(5) ingot casting after blunderbuss is washed is heated to 450-470 ℃, being hot-rolled down to thickness is 6-8mm, being cold-rolled to thickness is 2-3mm again, then with 90-110 ℃/h, is warming up to 220-240 ℃, insulation 2-3h, be warming up to 360-380 ℃ with 60-80 ℃/h again, insulation 1-2h, then be cooled to 170-190 ℃ with 80-100 ℃/h, insulation 3-4h, air cooling is 1.5-2mm to being cold-rolled to thickness after room temperature, and total deformation reaches more than 85%;
(6) sheet material after moulding is warming up to 80-90 ℃ with 30-40 ℃/h, insulation 4-6h, then be warming up to 150-180 ℃ with 40-50 ℃/h, insulation 2-3h, then be cooled to 90-100 ℃ with 30-40 ℃/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 were pulverized to the 300-500 mesh sieve, after mixing, added norbide and Zirconium tetrafluoride, 4000-5000rpm speed lapping 5-10min then calcines 3-5h under 1050-1250 ℃, and then shrend is cooling, grind, stand-by; C. all the other each raw materials are mixed and are heated to 760-780 ℃, after its whole meltings, clarification 1-2h, be poured into water cold quenching by top clear liquor, obtains broken particle, and porphyrize is crossed the 300-400 mesh sieve, stand-by; D. mixing of materials step b, c obtained stirs and obtains described refining agent.
The de-percentage of admixture of refining agent of the present invention between 65-75%, remove the inclusion in aluminium alloy and make inclusion modification effective, purify aluminium alloy and improved internal soundness, degree of porosity reduces the 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 elements such as a small amount of Y, Ce, Pm, Ga, Bi, change the recrystallize state, put forward the performances 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 makes 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 kind of production technique of aluminium alloys for automobile sheet material is characterized in that comprising the following steps:
(1) meet following the requirement according to the element mass percent: 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 that Al is prepared burden, furnace charge is dropped into to smelting furnace carry out melting under 740 ℃, treat that metal all melts, after stirring, respectively get a sample in middle part, the burner hearth both sides of the aluminium liquid degree of depth and analyzed, analyze after qualified and get final product converter;
(2) after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place that the refining agent powder is sprayed into to the aluminium liquid degree of depth carries out refining, and nitrogen pressure is 1.3kg/mm, and refining temperature is 720 ℃, and refining time is 25min, standing 30min after refining;
(3) before the casting, with 14 order glass fiber cloth, filter, fully oxide compound, the slag inclusion in the elimination melt, then cast, and casting temp is 700 ℃;
(4) alloy cast ingot first is warming up to 210 ℃ with 90 ℃/h, insulation 8h, then be warming up to 340 ℃ with 80 ℃/h, insulation 12h, with 120 ℃/h, be warming up to 490 ℃, insulation 4h, then be cooled to 305 ℃ with 90 ℃/h again, insulation 16h, be warming up to 460 ℃ with 70 ℃/h again, insulation 10h, then be cooled to 230 ℃ with 160 ℃/h, insulation 5h, air-cooled to room temperature; After homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the defect such as the lip-deep casting knurl of ingot casting;
(5) ingot casting after blunderbuss is washed is heated to 460 ℃, being hot-rolled down to thickness is 7mm, being cold-rolled to thickness is 2.5mm again, then with 100 ℃/h, is warming up to 230 ℃, insulation 3h, be warming up to 375 ℃ with 70 ℃/h again, insulation 1h, then be cooled to 180 ℃ with 90 ℃/h, insulation 3h, air cooling is 2mm to being cold-rolled to thickness after room temperature, and total deformation reaches more than 85%;
(6) sheet material after moulding is warming up to 90 ℃ with 40 ℃/h, insulation 5h, then be warming up to 160 ℃ with 50 ℃/h, and insulation 3h, then be cooled to 100 ℃ with 40 ℃/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 to 500 mesh sieves, and after mixing, added norbide and Zirconium tetrafluoride, 5000rpm speed lapping 6min then calcines 4h under 1150 ℃, and then shrend is cooling, grinds, stand-by; C. all the other each raw materials are mixed and are heated to 780 ℃, after its whole meltings, clarification 1h, be poured into water cold quenching by top clear liquor, obtains broken particle, and porphyrize is crossed 400 mesh sieves, stand-by; D. mixing of materials step b, c obtained stirs and obtains described refining agent.
The aluminum alloy plate materials of gained through the check mechanical property is: tensile strength 377Mpa, and yield strength is 268Mpa, elongation is 14.6%.
Claims (2)
1. the production technique of an aluminium alloys for automobile sheet material is characterized in that comprising the following steps:
(1) meet following the requirement according to the element mass percent: 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 that Al is prepared burden, furnace charge is dropped into to smelting furnace carry out melting under 730-750 ℃, treat that metal all melts, after stirring, middle part in the aluminium liquid degree of depth, the burner hearth both sides are respectively got a sample and are analyzed, analyze after qualified and get final product converter,
(2) after melt proceeds to standing furnace, take nitrogen as carrier, 2/3 place that the refining agent powder is sprayed into to the aluminium liquid degree of depth carries out refining, nitrogen pressure is 1.2-1.5kg/mm, refining temperature is 715-725 ℃, and refining time is 20-30min, standing 20-30min after refining;
(3) before the casting, with 14 order glass fiber cloth, filter, fully oxide compound, the slag inclusion in the elimination melt, then cast, and casting temp is 685-705 ℃;
(4) alloy cast ingot first is warming up to 180-220 ℃ with 80-90 ℃/h, insulation 5-10h, then be warming up to 330-360 ℃ with 70-80 ℃/h, insulation 10-15h, with 100-120 ℃/h, be warming up to 480-500 ℃, insulation 3-5h, then be cooled to 280-320 ℃ with 80-100 ℃/h again, insulation 14-18h, be warming up to 460-480 ℃ with 70-80 ℃/h again, insulation 5-10h, then be cooled to 220-250 ℃ with 150-180 ℃/h, insulation 4-6h, air-cooled to room temperature; After homogenizing annealing, ingot casting surface blunderbuss is washed, to remove the defect such as the lip-deep casting knurl of ingot casting;
(5) ingot casting after blunderbuss is washed is heated to 450-470 ℃, being hot-rolled down to thickness is 6-8mm, being cold-rolled to thickness is 2-3mm again, then with 90-110 ℃/h, is warming up to 220-240 ℃, insulation 2-3h, be warming up to 360-380 ℃ with 60-80 ℃/h again, insulation 1-2h, then be cooled to 170-190 ℃ with 80-100 ℃/h, insulation 3-4h, air cooling is 1.5-2mm to being cold-rolled to thickness after room temperature, and total deformation reaches more than 85%;
(6) sheet material after moulding is warming up to 80-90 ℃ with 30-40 ℃/h, insulation 4-6h, then be warming up to 150-180 ℃ with 40-50 ℃/h, insulation 2-3h, then be cooled to 90-100 ℃ with 30-40 ℃/h, insulation 3-5h, air cooling to room temperature through finishing, inspect for acceptance, pack and get product.
2. the production technique of aluminium alloys for automobile sheet material 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 were pulverized to the 300-500 mesh sieve, after mixing, added norbide and Zirconium tetrafluoride, 4000-5000rpm speed lapping 5-10min then calcines 3-5h under 1050-1250 ℃, and then shrend is cooling, grind, stand-by; C. all the other each raw materials are mixed and are heated to 760-780 ℃, after its whole meltings, clarification 1-2h, be poured into water cold quenching by top clear liquor, obtains broken particle, and porphyrize is crossed the 300-400 mesh sieve, stand-by; D. mixing of materials step b, c obtained stirs and obtains described refining agent.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103952599A (en) * | 2014-04-10 | 2014-07-30 | 安徽银力铸造有限公司 | Automobile aluminium alloy obtained by salt bath processing |
| CN103952606A (en) * | 2014-04-10 | 2014-07-30 | 安徽银力铸造有限公司 | Automobile aluminium alloy containing metal indium |
| 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 |
| CN103966471A (en) * | 2014-04-09 | 2014-08-06 | 马鞍山新嘉机械制造有限公司 | Preparation method for automobile aluminum alloy plate containing metal tellurium |
| 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 |
| CN110079704A (en) * | 2019-04-01 | 2019-08-02 | 华南理工大学 | It is a kind of to regenerate wear-resisting wrought aluminium alloy and preparation method thereof |
| CN111575559A (en) * | 2020-07-07 | 2020-08-25 | 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 |
| CN114752791A (en) * | 2022-04-18 | 2022-07-15 | 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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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| CN103952606A (en) * | 2014-04-10 | 2014-07-30 | 安徽银力铸造有限公司 | Automobile aluminium alloy containing metal indium |
| 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 |
| CN103952599A (en) * | 2014-04-10 | 2014-07-30 | 安徽银力铸造有限公司 | Automobile aluminium alloy obtained by salt bath processing |
| 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 |
| CN110079704A (en) * | 2019-04-01 | 2019-08-02 | 华南理工大学 | It is a kind of to regenerate wear-resisting wrought aluminium alloy and preparation method thereof |
| CN111575559A (en) * | 2020-07-07 | 2020-08-25 | 福建祥鑫股份有限公司 | Corrosion-resistant 6-series aluminum alloy |
| 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 |
| CN114752791A (en) * | 2022-04-18 | 2022-07-15 | 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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