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Preparation method of aluminum matrix composite material brake disc

A technology of aluminum-based composite materials and brake discs, applied in the direction of brake discs, etc., can solve the problems of difficult popularization and application of ordinary motorcycles, affect the mechanical properties of brake discs, and high cost, achieve good thermal conductivity and improve reliability and the effect of improving the service life and thermal conductivity

Active Publication Date: 2018-01-19
山东银光钰源轻金属精密成型有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the brake discs widely used in motorcycle brake discs are made of cast iron or steel, both of which have the problem of high specific gravity. In addition, in order to increase the heat dissipation performance of the brake disc, a large number of ventilation holes are arranged on the brake disc. This also affects the overall mechanical properties of the brake disc.
Although it is reported that ceramic friction discs are used to replace steel friction discs, it is difficult to popularize and apply them on ordinary motorcycles due to the high cost.

Method used

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  • Preparation method of aluminum matrix composite material brake disc
  • Preparation method of aluminum matrix composite material brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare a brake disc blank with a size of Φ300mm (outer diameter) × 200mm (inner hole) × 5mm (thickness)

[0018] First, 15g of BN powder with a particle size of less than 50 microns is selected and placed in a ball mill for ball milling and crushing. The ball milling speed is 300 rpm, the weight ratio of ball to material is 10:1, and the ball milling time is 30 minutes. Then, the spherical powder with an average particle size of 74 microns Put 360g of aluminum powder in the ball mill to continue ball milling, and add 3600g of balls at the same time. After adding aluminum powder, the ball milling speed is 320 rpm, and the ball milling time is 1 hour. After the ball milling, take out 110g of mixed powder from the ball mill tank to fill the brake disc. The raw material of the inner 1 / 4 part, and then continue to add 135gMoS to the ball mill tank 2 and 97g titanium-coated diamond powder, MoS 2 The particle size of the powder is controlled at 5-10 microns, and the particle...

Embodiment 2

[0020] Prepare a brake disc blank with a size of Φ300mm (outer diameter) × 200mm (inner hole) × 5mm (thickness)

[0021] First, 15g of BN powder with a particle size of less than 50 microns is selected and placed in a ball mill for ball milling and crushing. The ball milling speed is 300 rpm, the weight ratio of ball to material is 10:1, and the ball milling time is 30 minutes. Put 360g of aluminum powder in the ball mill to continue ball milling, and add 3600g of balls at the same time. After adding aluminum powder, the ball milling speed is 350 rpm, and the ball milling time is 1 hour. After the ball milling, take out 110g of mixed powder from the ball mill tank to fill the brake disc. The raw material of the inner 1 / 4 part, and then continue to add 135gMoS to the ball mill tank 2 and 97g titanium-coated diamond powder, MoS 2 The particle size of the powder is controlled at 5-10 microns, and the particle size of the titanium-coated diamond is controlled at 10-15 microns. Af...

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Abstract

The invention relates to a preparation method of an aluminum matrix composite material brake disc, and belongs to the field of metal matrix composite materials. BN powder, MoS2 powder and titanium-plated diamond micro-powder are selected to serve as a reinforcement body, and pure aluminum serves as a matrix; through ball milling, the BN powder and Al powder are firstly mixed, and therefore the BNpowder is evenly distributed in the Al powder to form composite powder; then the composite powder, the MoS2 powder and the titanium-plated diamond micro-powder are mixed evenly according to a certainproportion, then pressing and pre-forming are carried out, in the pressing process, through a powder filling control manner, (BN+Al) composite powder is distributed to the 1 / 4 width position of the inner side of a pre-forming blank of an annular brake disc, and (BN+Al+MoS2+titanium-plated diamond) quaternary mixing powder is distributed to the outer side; and finally, the pressed and pre-formed blank is placed into a vacuum hot-pressing furnace for hot pressed sintering, and the composite aluminum matrix composite material brake disc is finally obtained. By means of the above method, the prepared motorbike brake disc is small in mass and better in radiating performance and wear-resisting property, and the working stability and reliability of the brake disc can be comprehensively improved.

Description

technical field [0001] The invention belongs to the field of metal-based composite materials, and relates to a preparation method of an aluminum-based composite material brake disc. Background technique [0002] Lightweight is becoming one of the research frontiers and hotspots of the motorcycle industry in the 21st century. On the premise of ensuring safety and performance, how to reduce the weight of the motorcycle body, improve the service life and reduce the cost of use has become the core issue of current development technology . Some data show that reducing the weight of the wheels is more effective than reducing the weight of other parts of the motorcycle for the improvement of fuel economy. In addition to the lightweight of the motorcycle wheel itself, the motorcycle brake disc is an important component at the end of the motorcycle wheel, and its lightweight cannot be ignored. In addition, during the braking process of the motorcycle, the temperature of the brake d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/14B22F5/10F16D65/12
Inventor 孙强王前进陈锐王守泰张希笑王飞
Owner 山东银光钰源轻金属精密成型有限公司
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