Light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and preparation method thereof

An aluminum-based composite material, automobile braking technology, applied in the direction of brake discs, brake types, brake components, etc., can solve the problem of failure to meet braking requirements, high energy consumption of brake discs, and wear resistance of brake discs and other problems, to achieve the effect of reducing weight, improving mechanical properties, wear resistance and braking performance

Active Publication Date: 2020-07-24
HUNAN JINTIAN ALUMINUM HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the trend of automobile lightweight and the defects existing in the existing brake disc preparation technology, the purpose of the present invention is to provide a light-weight, wear-resistant aluminum-based powder metallurgy composite automobile brake disc, which solves the problem of traditional cast iron brake discs. Disc energy consumption is high, which is not conducive to environmental protection, and the brake disc of pure aluminum-based powder metallurgy composite material is not wear-resistant and cannot meet the braking requirements

Method used

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  • Light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and preparation method thereof
  • Light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and preparation method thereof
  • Light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and preparation method thereof

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Effect test

Embodiment 1

[0045] A method for preparing an aluminum-based powder metallurgy composite automobile brake disc of the present embodiment is implemented according to the following steps: 1. 4% Fe, 4.5% Cu, 0.2% Sr, 0.3% Ce, 40% SiC of SiC and 51% aluminum powder (above all are mass fractions) are added into mixer, mix 50min with the speed of 20r / min, obtain wear-resisting aluminum-matrix composite material powder; Two, 4% Fe, 4.5% Cu, 0.2% Sr, 0.3% Ce and 91% aluminum powder (the above are all mass fractions) are added to the mixer, and mixed for 40min at a speed of 20r / min to obtain the aluminum-based structural material powder; 3. Step The wear-resistant aluminum-based composite material powder and aluminum-based structural material powder treated in the first and second treatments are respectively filled into the corresponding positions of the cold-pressing mold, and inserted into the heat dissipation hole pins, and cold-pressed at a pressure of 200MPa and a pressurization rate of 2mm / s...

Embodiment 2

[0048] A method for preparing an aluminum-based powder metallurgy composite automobile brake disc of the present embodiment is implemented according to the following steps: 1. 2% Fe, 6.6% Si, 0.1% Sr, 0.3% Mg, 50% SiC of SiC and 41% aluminum powder (above all are mass fractions) are added into mixer, mix 40min with the speed of 20r / min, obtain wear-resisting aluminum-matrix composite material powder; Two, 3% Fe, 3.5% Cr, 0.5% Ce and 93% aluminum powder (the above are all mass fractions) are added to the mixer, and mixed at a speed of 20r / min for 45min to obtain the aluminum-based structural material powder; Wear-resistant aluminum-based composite material powder and aluminum-based structural material powder were respectively filled into the corresponding positions of the cold-pressing mold, and inserted into the heat dissipation hole pins for cold-pressing. The pressure was 250 MPa, and the pressurization rate was 1mm / s. The time is 20s; 4. Sinter the automobile brake disc gre...

Embodiment 3

[0053] A method for preparing an aluminum-based powder metallurgy composite automobile brake disc of the present embodiment is implemented according to the following steps: 1. 2% Fe, 1.5% Cr, 0.5% Ce, 0.1% Mg, 70% SiC of SiC and 25.9% of aluminum powder (above all are mass fractions) are added into the mixer, mix 40min with the speed of 20r / min, obtain wear-resisting aluminum matrix composite material powder; Cr, 0.5% Ce and 93% aluminum powder (the above are all mass fractions) are added to the mixer, and mixed at a speed of 20r / min for 45min to obtain the aluminum-based structural material powder; Wear-resistant aluminum-based composite material powder and aluminum-based structural material powder were respectively filled into the corresponding positions of the cold-pressing mold, and inserted into the heat dissipation hole pins for cold-pressing. The pressure was 250 MPa, and the pressurization rate was 1mm / s. The time is 20s; 4. Sinter the automobile brake disc green body ...

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Abstract

The invention discloses a light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and a preparation method thereof. A disc body of the automobile brake disc is made of an aluminum-based structural material, and a frictional surface is made of a wear-resistant aluminum-based composite material. According to the preparation method, the automobile brake discis prepared by using wear-resistant aluminum-based composite material mixed powder, aluminum-based structural material mixed powder and other raw materials through regional reinforcement and integrated ''near-net-shaping'' technologies according to the principle of powder metallurgy. The prepared aluminum-based powder metallurgical composite material automobile brake disc has a series of advantages of being free of damage, free of defects, good in compactness, high in strength and the like and can well meet the requirements for braking and wear resistance of the automobile brake disc; meanwhile, compared with a traditional cast iron brake disc, the weight is reduced by more than 55%, so that energy consumption is greatly lowered, and the national requirements for energy conservation and emission reduction are met; and the preparation method is easy and convenient to use, low in cost and high in finished product rate and can be used for preparing automobile brake discs of various dimensions and structures, thereby meeting the requirement for industrial mass continuous production.

Description

technical field [0001] The invention relates to an automobile brake disc, in particular to a lightweight and wear-resistant aluminum-based powder metallurgy composite automobile brake disc and a preparation method thereof. The method uses an aluminum-based composite material through cold forming, sintering and heat The automobile brake disc is prepared by a combined process of pressing and shaping, and belongs to the technical field of lightweight automobile brake discs and their preparation. Background technique [0002] Lightweight is one of the most effective means to realize energy saving and consumption reduction of automobiles and other transportation vehicles. Using high-performance light metal materials instead of steel materials for key moving parts such as engines and brake discs of transportation equipment can not only reduce the weight of the vehicle, reduce the momentum of high-speed moving parts of transportation equipment, but also significantly improve the dy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12B22F3/02B22F3/10B22F3/24B22F7/02C22C21/00C22C21/02C22C21/12C22C29/00C22C29/06C22C32/00
CPCB22F3/02B22F3/1007B22F3/24B22F7/02B22F2998/10C22C21/00C22C21/02C22C21/12C22C29/00C22C29/065C22C32/00F16D65/125F16D2200/0008F16D2200/003F16D2200/0039F16D2200/006F16D2200/0082
Inventor 霍树海
Owner HUNAN JINTIAN ALUMINUM HI TECH CO LTD
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