CN102925763A - Aluminum alloy automobile wheel hub composite reinforcement technology - Google Patents
Aluminum alloy automobile wheel hub composite reinforcement technology Download PDFInfo
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- CN102925763A CN102925763A CN2011102335059A CN201110233505A CN102925763A CN 102925763 A CN102925763 A CN 102925763A CN 2011102335059 A CN2011102335059 A CN 2011102335059A CN 201110233505 A CN201110233505 A CN 201110233505A CN 102925763 A CN102925763 A CN 102925763A
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Abstract
The invention discloses an aluminum alloy automobile wheel hub composite reinforcement technology. Trace elements (comprising Mg, Ti, B, RE and the like) are added on the basis of original alloy components to carry out a reasonable component optimization, and effective purification, crystal grain refinement, deterioration treatment and finished product heat treatment are carried out in the melting process to simultaneously guarantee the good casting performance and the better mechanical performances of the alloy. The tensile strength, the yield strength and the elongation rate of aluminum alloy wheel hub products produced through utilizing the technology reach 262MPa, 179MPa and 9% respectively, and exceed strength performance standards in the Chinese wheel hub industry, so the technology has the advantages of certain practical production meaning, heat treatment period shortening, and substantial saving of the production cost.
Description
Technical field
The invention belongs to field of new, be specifically related to a kind of aluminium alloy automobile hub compound technology.
Background technology
Wheel hub is one of most important safety member on the automobile, arranged dividing of steel wheel hub and aluminum wheel hub, wheel hub is being accepted the pressure of automobile and loading mass action, be subject to vehicle in the effect of starting, when braking dynamic torque, bear also that automobile is turned in the process of moving, concavo-convex road surface, road obstacle impact etc. are stressed from the irregular alternation that the different directions dynamic load occurs.The q﹠r of wheel hub not only is related to the safety of vehicle and passengers inside the car's goods and materials, also have influence on the performances such as under steam stationarity of vehicle, mastery, comfortableness, this just requires, and wheel hub dynamic-balance is good, fatigue strength is high, good rigidity and elasticity are arranged, the size and dimension precision is high, quality is light etc.Therefore automobile production producer is more and more higher to the performance requriements of aluminium alloy wheel hub, more following situations not fully up to expectations often appear in the aluminum alloy wheel hub material that adopts in daily production process: hardness has improved, but material becomes fragile, toughness does not reach requirement, perhaps toughness reaches requirement, but hardness does not satisfy requirement.
Summary of the invention
The object of the invention is to: a kind of aluminium alloy automobile hub compound technology is provided, by changing aluminium alloy wheel hub material prescription, alloying smelting, heat treatment technics to strengthen the mechanical property of aluminium alloy wheel hub, improve hardness and the tensile strength of aluminium alloy wheel hub, make the hardness of aluminium alloy wheel hub and toughness reach a rational category.Its summary of the invention is as follows:
1, the mass percent of its each component of alloy is: Si6.5-7.5%, and Mg0.5-3%, Cu0.03-0.2%, Mn0.3-0.4%, Ti0.05-0.1%, Ni0.02-0.04%, Sr0.01-0.02%, all the other are Al.
2, material preparation, realize by following steps:
(1) at first, aluminium material with 2/3 joins in the smelting furnace and melts, after the fusing of aluminium material, pressing material prescription uses the materials such as silicon metal, magnesium in the bell jar jewelling liquid, again remaining 1/3 aluminium material is joined in the smelting furnace, after alloy all melts and stirs, be warming up to 740 ℃, then add successively the master alloys such as Cu, Sr, Ti, continue to be warming up to 750-780 ℃;
(2) adopt the rotten and Al-5Ti-1B thinning processing of Al-10%RE, for guaranteeing the rotten effect of processing, select the modification effect longer duration, modification effect and remelting be well Al-10%RE (mishmetal) the master alloy processing of going bad all, rotten treatment temp is 750 ℃, and the alterant consumption is 1% of weight alloy;
(3) use innocuous refining flux to carry out refining treatment, the aluminium alloy temperature is adjusted to 710 ℃～720 ℃, the refining agent consumption is the 1.3-1.5% of weight alloy;
(4) add Ar2 gas refining degasification, jetting pressure is 0.25-0.35MPa, and gassing time 10-20min is cooled to 665-675 ℃ again, sprinkles the nontoxic deslagging agent of one deck on liquid level, dials the slag heat preservation for standby use after leaving standstill 10min.
3, finished product thermal treatment:
(1) solid melting temperatur is (538 ± 5) ℃, time 5h;
(2) need quench in 20S after solid the melting, water temperature is controlled at 60-90 ℃;
(3) the artificial aging temperature is (138 ± 5) ℃, time 4h.
By on the basis of original alloy ingredient, add trace element (Mg, Ti, B, RE etc.) and carry out rational composition optimization, and in fusion process, effectively purify, grain refining, rotten process, finished product thermal treatment, when guaranteeing that alloy has good castability, obtain better mechanical property.By above-mentioned processing, the tensile strength of its aluminium alloy wheel hub product can reach 262MPa, and yield strength can reach 179MPa, and unit elongation reaches 9%.Surpass the strength property standard of state's inner wheel hub industry, had certain production practical significance, and the shortening of heat treatment cycle, production cost greatly saved.
Embodiment
The below provides a most preferred embodiment of the present invention:
1, the prescription of magnesium alloy materials is (weight percent): Si7.2%, Mg1.5%, and Cu0.15%, Mn0.3%, Ti0.08%, Ni0.03%, Sr0.02%, all the other are Al.
2, its preparation process is as follows:
(1) at first, aluminium material with 2/3 joins in the smelting furnace and melts, after the fusing of aluminium material, pressing material prescription uses the materials such as silicon metal, magnesium in the bell jar jewelling liquid, again remaining 1/3 aluminium material is joined in the smelting furnace, after alloy all melts and stirs, be warming up to 740 ℃, then add successively the master alloys such as Cu, Sr, Ti, continue to be warming up to 750 ℃;
(2) adopt the rotten and Al-5Ti-1B thinning processing of Al-10%RE, for guaranteeing the rotten effect of processing, select the modification effect longer duration, modification effect and remelting be well Al-10%RE (mishmetal) the master alloy processing of going bad all, rotten treatment temp is 750 ℃, and the alterant consumption is 1% of weight alloy;
(3) use innocuous refining flux to carry out refining treatment, the aluminium alloy temperature is adjusted to 720 ℃, the refining agent consumption is 1.5% of weight alloy;
(4) add Ar2 gas refining degasification, jetting pressure is 0.3MPa, and gassing time 20min is cooled to 670 ℃ again, sprinkles the nontoxic deslagging agent of one deck on liquid level, dials the slag heat preservation for standby use after leaving standstill 10min.
3, finished product thermal treatment:
(1) solid melting temperatur is 545 ℃, time 5h;
(2) need quench in 20S after solid the melting, water temperature is controlled at 80 ℃;
(3) the artificial aging temperature be (138 ℃, time 4h.
By the aluminium alloy of above-mentioned processing, can obtain preferably modification effect, significantly improve tensile strength and the unit elongation of alloy, improve the feeding capacity of alloy, reduce hot cracking tendency, reduce size and the quantity of pin hole, and make its more disperse that distributes.Thereby make the mechanical property of aluminium alloy wheel hub, especially toughness and fatigue property are able to obvious improvement.
Claims (5)
1. the mass percent of its each component of alloy is: Si6.5-7.5%, and Mg0.5-3%, Cu0.03-0.2%, Mn0.3-0.4%, Ti0.05-0.1%, Ni0.02-0.04%, Sr0.01-0.02%, all the other are Al.
2. material preparation, realize by following steps:
(1) at first, aluminium material with 2/3 joins in the smelting furnace and melts, after the fusing of aluminium material, pressing material prescription uses the materials such as silicon metal, magnesium in the bell jar jewelling liquid, again remaining 1/3 aluminium material is joined in the smelting furnace, after alloy all melts and stirs, be warming up to 740 ℃, then add successively the master alloys such as Cu, Sr, Ti, continue to be warming up to 750-780 ℃;
(2) adopt the rotten and Al-5Ti-1B thinning processing of Al-10%RE, for guaranteeing the rotten effect of processing, select the modification effect longer duration, modification effect and remelting be well Al-10%RE (mishmetal) the master alloy processing of going bad all, rotten treatment temp is 750 ℃, and the alterant consumption is 1% of weight alloy;
(3) use innocuous refining flux to carry out refining treatment, the aluminium alloy temperature is adjusted to 710 ℃～720 ℃, the refining agent consumption is the 1.3-1.5% of weight alloy;
(4) add Ar2 gas refining degasification, jetting pressure is 0.25-0.35MPa, and gassing time 10-20min is cooled to 665-675 ℃ again, sprinkles the nontoxic deslagging agent of one deck on liquid level, dials the slag heat preservation for standby use after leaving standstill 10min.
3. finished product thermal treatment:
(1) solid melting temperatur is (538 ± 5) ℃, time 5h;
(2) need quench in 20S after solid the melting, water temperature is controlled at 60-90 ℃;
(3) the artificial aging temperature is (138 ± 5) ℃, time 4h.
4. aluminium alloy automobile hub compound technology as claimed in claim 2 is characterized in that: adopt the processing of going bad of Al-10%RE (mishmetal) master alloy, deterroration is 750 ℃, and the alterant consumption is 1% of weight alloy.
5. aluminium alloy automobile hub compound technology as claimed in claim 2 is characterized in that: use innocuous refining flux to carry out refining treatment, the aluminium alloy temperature is adjusted to 710 ℃～720 ℃, the refining agent consumption is the 1.3-1.5% of weight alloy.
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| CN2011102335059A CN102925763A (en) | 2011-08-11 | 2011-08-11 | Aluminum alloy automobile wheel hub composite reinforcement technology |
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| CN2011102335059A CN102925763A (en) | 2011-08-11 | 2011-08-11 | Aluminum alloy automobile wheel hub composite reinforcement technology |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255293A (en) * | 2013-04-28 | 2013-08-21 | 广东万丰摩轮有限公司 | Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof |
| CN104212987A (en) * | 2014-09-19 | 2014-12-17 | 无锡贺邦金属制品有限公司 | Preparation method of aluminum alloy for casting |
| CN104818398A (en) * | 2015-03-23 | 2015-08-05 | 芜湖黄燕实业有限公司 | Aluminum alloy for wheel hub and preparation method thereof, and aluminum alloy wheel hub |
| CN106282686A (en) * | 2016-11-10 | 2017-01-04 | 无锡市明盛强力风机有限公司 | A kind of casting method of wheel hub |
| CN106834651A (en) * | 2017-01-19 | 2017-06-13 | 安徽铖友汽车零部件制造有限公司 | A kind of automotive hub heat treatment method |
| EP3301198A1 (en) * | 2016-09-29 | 2018-04-04 | Samsung Electronics Co., Ltd. | Aluminum alloy for die casting and method for manufacturing the same |
| CN108396204A (en) * | 2018-02-09 | 2018-08-14 | 淮海工学院 | Hypoeutectic aluminum-silicon alloy casting and process method for improving performance thereof |
| CN109837428A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of automotive hub aluminum alloy materials |
| CN111852646A (en) * | 2020-07-09 | 2020-10-30 | 唐秦 | Shell for air supercharging device and manufacturing method thereof |
| CN112775439A (en) * | 2020-12-07 | 2021-05-11 | 上海航天设备制造总厂有限公司 | Modification method for eutectic silicon in aluminum alloy prepared by SLM |
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| JPS57207162A (en) * | 1981-06-13 | 1982-12-18 | Nippon Light Metal Co Ltd | Manufacture of aluminum wheel for vehicle |
| WO2002012582A1 (en) * | 2000-08-08 | 2002-02-14 | Asahi Tec Corporation | Aluminum alloy formed by precipitation hardening and method for heat treatment thereof |
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| CN101966575A (en) * | 2010-11-13 | 2011-02-09 | 河南理工大学 | Process for casting aluminum alloy wheel and heat treatment process |
| CN102653833A (en) * | 2011-03-01 | 2012-09-05 | 金刚 | Large-size cross-country recreational vehicle hub material and manufacture method thereof |
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2011
- 2011-08-11 CN CN2011102335059A patent/CN102925763A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207162A (en) * | 1981-06-13 | 1982-12-18 | Nippon Light Metal Co Ltd | Manufacture of aluminum wheel for vehicle |
| WO2002012582A1 (en) * | 2000-08-08 | 2002-02-14 | Asahi Tec Corporation | Aluminum alloy formed by precipitation hardening and method for heat treatment thereof |
| CN1468320A (en) * | 2000-08-08 | 2004-01-14 | ������������ʽ���� | Aluminum alloy formed by precipitation hardening and method for heat treatment thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255293A (en) * | 2013-04-28 | 2013-08-21 | 广东万丰摩轮有限公司 | Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof |
| CN103255293B (en) * | 2013-04-28 | 2015-06-03 | 广东万丰摩轮有限公司 | Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof |
| CN104212987A (en) * | 2014-09-19 | 2014-12-17 | 无锡贺邦金属制品有限公司 | Preparation method of aluminum alloy for casting |
| CN104818398A (en) * | 2015-03-23 | 2015-08-05 | 芜湖黄燕实业有限公司 | Aluminum alloy for wheel hub and preparation method thereof, and aluminum alloy wheel hub |
| EP3301198A1 (en) * | 2016-09-29 | 2018-04-04 | Samsung Electronics Co., Ltd. | Aluminum alloy for die casting and method for manufacturing the same |
| CN106282686A (en) * | 2016-11-10 | 2017-01-04 | 无锡市明盛强力风机有限公司 | A kind of casting method of wheel hub |
| CN106834651A (en) * | 2017-01-19 | 2017-06-13 | 安徽铖友汽车零部件制造有限公司 | A kind of automotive hub heat treatment method |
| CN109837428A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of automotive hub aluminum alloy materials |
| CN108396204A (en) * | 2018-02-09 | 2018-08-14 | 淮海工学院 | Hypoeutectic aluminum-silicon alloy casting and process method for improving performance thereof |
| CN111852646A (en) * | 2020-07-09 | 2020-10-30 | 唐秦 | Shell for air supercharging device and manufacturing method thereof |
| CN112775439A (en) * | 2020-12-07 | 2021-05-11 | 上海航天设备制造总厂有限公司 | Modification method for eutectic silicon in aluminum alloy prepared by SLM |
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Application publication date: 20130213 |