CN103290270A - Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy - Google Patents
Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy Download PDFInfo
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- CN103290270A CN103290270A CN2013101791886A CN201310179188A CN103290270A CN 103290270 A CN103290270 A CN 103290270A CN 2013101791886 A CN2013101791886 A CN 2013101791886A CN 201310179188 A CN201310179188 A CN 201310179188A CN 103290270 A CN103290270 A CN 103290270A
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- lithium alloy
- lithium
- argon gas
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Abstract
The invention discloses an aluminum-lithium alloy for an automobile hub. The aluminum-lithium alloy comprises the following raw materials in percentage by weight: 12-15% of iron, 5-20% of lithium, 0.2-0.5% of sulfur and the balance of aluminum. The aluminum-lithium alloy disclosed by the invention has the characteristics of low density, high specific strength, high specific stiffness and preferable suitability for the automobile hub, and the automobile hub made of the aluminum-lithium alloy has the characteristics of longer service life and stronger corrosion resistance than those of common automobile hubs.
Description
Technical field
The present invention relates to a kind of alloy material for automotive hub.
Background technology
Wheel hub in the market can be divided into steel wheel hub and alloy wheel hub according to material, and each have their own pros and cons.
The most important advantage of steel wheel hub is exactly simple (the general technology that adopts casting of manufacturing process, for example aluminium alloy wheel hub generally adopts low-pressure casting process production) cost is relatively low, and anti-metal fatigue is very capable, just we be commonly called as cheaply solid again.But the shortcoming of steel wheel hub is also relatively outstanding to be exactly outward appearance ugliness (we can say and do not have outward appearance to say), weight big (identical wheel hub steel matter is heavy more a lot of than aluminum alloy material), inertia resistance is big, and thermal diffusivity is also poor, and is very easy to get rusty.
Alloy material wheel hub just in time can remedy such problem, lighter weight, and inertia resistance is little, making precision height, the distortion when high-speed rotation is little, and inertia resistance is little, be conducive to improve the linear driving performance of automobile, alleviate tire drag, thereby reduced oil consumption.The heat conductivility of alloy material is again about three times of steel, and thermal diffusivity is good, and for vehicle braked system, the heat fade of tire and breaking system can both play a role.The alloy wheel hub of former factory car in the market is all based on aluminium alloy, and a lot of certainly repacking wheel hubs can select elements such as chromium, titanium as basic material in order to reach certain particular requirement and the lifting of vision.But, get up with steel matter tip hub ratio, the price of alloy wheel hub is wanted expensive and is gone out much, so often in a lot of other former factory cars of low and middle-end level, the steel wheel hub can appear at low joining on the vehicle, the alloy wheel hub then is the standard configuration that height is joined vehicle.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defective, and light weight, the long Al-Li alloy that is used for automotive hub of life-span are provided.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 12%-15%, lithium 5%-20%, sulphur 0.2%-0.5%, the aluminium of surplus.
As preferred version, the above-mentioned Al-Li alloy that is used for automotive hub, the composition of described Al-Li alloy by significant percentage is: iron 10%, lithium 15%, sulphur 0.5%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1100 ℃～1200 ℃, and vacuum tightness is 8 * 10
-6--0.5 * 10
-4Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2-5ml ∕ s.
Preferably, the smelting temperature in the described step 1 is 1200 ℃, and vacuum tightness is 7.6 * 10-6Pa.
Preferably, the control of the argon gas stream in the described step 2 is at 4ml ∕ s.
Beneficial effect of the present invention is:
Al-Li alloy material provided by the present invention has the characteristics of low density, high specific strength and high specific stiffness performance, is more suitable for automotive hub and uses, general automotive hub, long service life, characteristics such as erosion resistance is strong.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in restriction the present invention.
Embodiment 1:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 12%-15%, lithium 5%-20%, sulphur 0.2%-0.5%, the aluminium of surplus.
As preferred version, the above-mentioned Al-Li alloy that is used for automotive hub, the composition of described Al-Li alloy by significant percentage is: iron 10%, lithium 15%, sulphur 0.5%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1100 ℃～1200 ℃, and vacuum tightness is 8 * 10
-6--0.5 * 10
-4Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2-5ml ∕ s.
Preferably, the smelting temperature in the described step 1 is 1200 ℃, and vacuum tightness is 7.6 * 10-6Pa.
Preferably, the control of the argon gas stream in the described step 2 is at 4ml ∕ s.
Embodiment 2:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 10%, lithium 15%, sulphur 0.5%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1200 ℃, and vacuum tightness is 7.6 * 10
-6Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 4ml ∕ s.
Embodiment 3:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 12%, lithium 5%, sulphur 0.2%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1100 ℃, and vacuum tightness is 8 * 10
-6Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 5ml ∕ s.
Embodiment 4:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 15%, lithium 20%, sulphur 0.5%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1100 ℃, and vacuum tightness is 0.5 * 10
-4Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 3ml ∕ s.
Embodiment 5:
A kind of Al-Li alloy for automotive hub, the composition of described Al-Li alloy is by weight percentage: iron 12%, lithium 20%, sulphur 0.4%, the aluminium of surplus.
The preparation method of the above-mentioned Al-Li alloy that is used for automotive hub, adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1200 ℃, and vacuum tightness is 9.4 * 10
-5Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2ml ∕ s.
The above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. Al-Li alloy that is used for automotive hub, it is characterized in that: the composition of described Al-Li alloy is by weight percentage: iron 12%-15%, lithium 5%-20%, sulphur 0.2%-0.5%, the aluminium of surplus.
2. the Al-Li alloy for automotive hub according to claim 1, it is characterized in that: the composition of described Al-Li alloy by significant percentage is: iron 10%, lithium 15%, sulphur 0.5%, the aluminium of surplus.
3. the preparation method of the Al-Li alloy for automotive hub according to claim 1 and 2 is characterized in that: adopt following steps:
Step 1, put into vacuum induction melting after each component mixed by proportional quantity, smelting temperature is 1100 ℃～1200 ℃, and vacuum tightness is 8 * 10
-6--0.5 * 10
-4Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2-5ml ∕ s.
4. sleeper according to claim 3 is with the preparation method of Al-Li alloy, and it is characterized in that: the smelting temperature in the described step 1 is 1200 ℃, and vacuum tightness is 7.6 * 10
-6Pa.
5. sleeper according to claim 3 is with the preparation method of Al-Li alloy, and it is characterized in that: the argon gas stream control in the described step 2 is at 4ml ∕ s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101791886A CN103290270A (en) | 2013-05-15 | 2013-05-15 | Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101791886A CN103290270A (en) | 2013-05-15 | 2013-05-15 | Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy |
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| CN103290270A true CN103290270A (en) | 2013-09-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792319A (en) * | 2020-12-17 | 2021-05-14 | 山西江淮重工有限责任公司 | Counter-pressure casting process and counter-pressure casting equipment for lithium alloy castings |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795505A (en) * | 1967-04-07 | 1974-03-05 | D Corradini | Production of deoxidated,depurated,killed and refined steels using aluminum-lithium alloys |
| CN102021457A (en) * | 2010-10-27 | 2011-04-20 | 中国航空工业集团公司北京航空材料研究院 | High-toughness aluminum lithium alloy and preparation method thereof |
| CN102864348A (en) * | 2012-09-21 | 2013-01-09 | 无锡恒畅铁路轨枕有限公司 | Aluminum lithium alloy for sleeper |
-
2013
- 2013-05-15 CN CN2013101791886A patent/CN103290270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795505A (en) * | 1967-04-07 | 1974-03-05 | D Corradini | Production of deoxidated,depurated,killed and refined steels using aluminum-lithium alloys |
| CN102021457A (en) * | 2010-10-27 | 2011-04-20 | 中国航空工业集团公司北京航空材料研究院 | High-toughness aluminum lithium alloy and preparation method thereof |
| CN102864348A (en) * | 2012-09-21 | 2013-01-09 | 无锡恒畅铁路轨枕有限公司 | Aluminum lithium alloy for sleeper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792319A (en) * | 2020-12-17 | 2021-05-14 | 山西江淮重工有限责任公司 | Counter-pressure casting process and counter-pressure casting equipment for lithium alloy castings |
| CN112792319B (en) * | 2020-12-17 | 2022-06-10 | 山西江淮重工有限责任公司 | Counter-pressure casting process and counter-pressure casting equipment for lithium alloy castings |
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Application publication date: 20130911 |