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Aluminum alloy for automobile wheel hub and automobile wheel hub production process

A technology of automobile wheel hub and manufacturing process, which is applied to rims, vehicle parts, transportation and packaging, etc. It can solve the problems of long production cycle, large equipment investment, poor corrosion resistance, etc., achieve fast heat dissipation, ensure driving safety, and improve use The effect of longevity

Active Publication Date: 2013-07-17
CHENGDU SUNSHINE ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this alloy has high strength and can meet the strength requirements of aluminum alloy wheels, it has poor corrosion resistance. In order to reduce the weight of the wheels, the process of die forging after multi-party forging is adopted.
The process is complicated, the production cycle is long, the investment in equipment is large, and the rate of waste and defective products is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Aluminum alloy for automobile wheels, which includes the following components: Si: 0.4%, Mg: 1.2%, Cu: 0.4%, Fe: 0.7%, Mn: 0.15%, Zn: 0.25%, Ti: 0.15%, aluminum alloy material The total amount of impurity elements in Sn and Pb does not exceed 0.5%, and the rest is Al;

[0024] Its manufacturing process, which includes the following steps:

[0025] S1. Preparation of billet: Heat the prepared aluminum alloy in a melting furnace to melt it. After the alloy is completely melted, adjust the internal temperature of the melting furnace to 760°C, and refine it with Al-Ti-B-C grain refiner. Chemical treatment, adjust the internal temperature of the melting furnace to 740°C, use hexachloroethane refining agent for refining treatment, finally remove slag, and slowly cool to obtain a cylindrical aluminum alloy bar of Φ600mm;

[0026] S2. Billet forging pretreatment: clean the aluminum alloy bar, remove oil and other surface impurities, heat the aluminum alloy bar to 580°C, and ke...

Embodiment 2

[0031] Aluminum alloy for automobile wheels, which includes the following components: Si: 0.6%, Mg: 1.0%, Cu: 0.3%, Fe: 0.7%, Mn: 0.15%, Zn: 0.25%, Ti: 0.15%, aluminum alloy material The total amount of impurity elements in Sn and Pb does not exceed 0.5%, and the rest is Al;

[0032] The manufacturing process of aluminum alloy for automobile wheel hub, it comprises the following steps:

[0033] S1. Preparation of billet: Heat the prepared aluminum alloy in a melting furnace to melt it. After the alloy is completely melted, adjust the internal temperature of the melting furnace to 770°C, and refine it with Al-Ti-B-C grain refiner. Chemical treatment, adjust the internal temperature of the melting furnace to 750°C, use hexachloroethane refining agent for refining treatment, finally remove slag, and slowly cool to obtain a cylindrical aluminum alloy bar with a diameter of Φ500mm;

[0034] S2. Billet forging pretreatment: clean the aluminum alloy bar, remove oil and other surface...

Embodiment 3

[0039] Aluminum alloy for automobile wheels, which includes the following components: Si: 0.8%, Mg: 0.8%, Cu: 0.15%, Fe: 0.7%, Mn: 0.15%, Zn: 0.25%, Ti: 0.15%, aluminum alloy material The total amount of impurity elements in Sn and Pb does not exceed 0.5%, and the rest is Al;

[0040] The manufacturing process of aluminum alloy for automobile wheel hub, it comprises the following steps:

[0041] S1. Preparation of billet: Heat the prepared aluminum alloy in a melting furnace to melt it. After the alloy is completely melted, adjust the internal temperature of the melting furnace to 780°C, and refine it with Al-Ti-B-C grain refiner. Chemical treatment, adjust the internal temperature of the melting furnace to 760°C, use hexachloroethane refining agent for refining treatment, finally remove slag, and slowly cool to obtain a cylindrical aluminum alloy bar with a diameter of Φ400mm;

[0042] S2. Billet forging pretreatment: clean the aluminum alloy bar, remove oil and other surface ...

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Abstract

The invention relates to aluminum alloy for an automobile wheel hub and an automobile wheel hub production process. The aluminum alloy comprises: 0.4%-0.8% of Si, 0.8%-1.2% of Mg, 0.15%-0.4% of Cu, 0.7% of Fe, 0.15% of Mn, 0.25% of Zn, 0.15% of Ti and the balance being Al. The production process includes the following steps: S1, blank preparation; S2, blank forging pretreatment; S3, mold pretreatment; S4, forging; forging with a 55MN-65MN forging machine and packing for 20min-30min to obtain a forging blank; and S5, roll forming; before cooling, transferring a wheel hub into an aging treatment apparatus and heat preserving for 6h-8h at the temperature of 170 DEG C-190 DEG C. The aluminum alloy for the automobile wheel hub has the advantages that weight is light, heat dissipation is fast, strength is high, vibration reducing performance is good, service life is long, and waste wheel hubs can be recycled.

Description

technical field [0001] The invention relates to the technical field of automobile hub manufacturing, in particular to an aluminum alloy for automobile hubs and a manufacturing process thereof. Background technique [0002] After decades of construction, China's automobile industry has begun to take shape, and automobile production has increased significantly. Especially after joining the WTO, instead of being wiped out as many people feared, China's automobile industry has relied on the capital of the international automobile industry In 2002, China's car production increased by 53% compared with 2001, and the output exceeded 1.1 million (it has reached the "Tenth Five-Year Plan" car production of China's auto industry). In the next 5-10 years, China will It will be the world's largest and fastest-growing auto market, which has been generally recognized by international industry insiders. At present, many major international automobile manufacturers have come to China to es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/06C22C1/02C22F1/047B60B21/00
Inventor 廖健
Owner CHENGDU SUNSHINE ALUMINUM
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