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A light wear-resistant aluminum-based powder metallurgy composite automobile brake disc and its preparation method

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

Active Publication Date: 2021-04-09
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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  • A light wear-resistant aluminum-based powder metallurgy composite automobile brake disc and its preparation method
  • A light wear-resistant aluminum-based powder metallurgy composite automobile brake disc and its preparation method
  • A light wear-resistant aluminum-based powder metallurgy composite automobile brake disc and its preparation method

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Comparison scheme
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 lightweight wear-resistant aluminum-based powder metallurgy composite automobile brake disc and a preparation method thereof. The disc body of the automobile brake disc is composed of aluminum-based structural materials, and the friction surface is composed of wear-resistant aluminum-based composite materials. The preparation method is to use wear-resistant aluminum-based composite material mixed powder and aluminum-based structural material mixed powder and other raw materials. Adopting the principle of powder metallurgy, through regional strengthening and integrated "near-net shape" technology, the aluminum-based powder metallurgy composite automobile brake disc has a series of advantages such as no damage, no defect, good compactness, and high strength. It satisfies the braking and wear-resistant requirements of automobile brake discs well, and at the same time reduces the weight by more than 55% compared with traditional cast iron brake discs, which greatly saves energy consumption and meets the national requirements for energy saving and emission reduction; and its preparation method is simple and convenient. The method has low cost and high yield, can be used to prepare automobile brake discs of various sizes and structures, and meets the requirements of industrialized 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 Patents(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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