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A kind of 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 that are difficult to popularize and apply on ordinary motorcycles, affect the mechanical properties of brake discs, and have high specific gravity, achieve good thermal conductivity and improve reliability and the effect of improving the service life and thermal conductivity

Active Publication Date: 2019-05-17
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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  • A kind of preparation method of aluminum matrix composite material brake disc
  • A kind of preparation method of aluminum matrix composite material brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0018] First, select 15g of BN powder with a particle size of less than 50 microns and place it in a ball mill for crushing. The ball mill speed is 300 rpm, the ball-to-material weight ratio is 10:1, and the ball milling time is 30 minutes, and then the average particle size is 74 microns. 360g of aluminum powder is placed in the ball mill to continue ball milling. At the same time, 3600g of grinding balls are added. After adding the aluminum powder, the speed of the ball mill is 320 rpm and the milling time is 1 hour. After the ball milling, 110g of the mixed powder is taken out from the ball milling tank to fill the brake disc 1 / 4 part of the raw materials on the inner side, 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 titan...

Embodiment 2

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

[0021] First select 15g of BN powder with a particle size of less than 50 microns and place it in a ball mill for crushing. The ball mill speed is 300 rpm, the ball-to-material weight ratio is 10:1, and the ball milling time is 30 minutes. Then, the average particle size is 100 microns. 360g of aluminum powder is placed in the ball mill to continue ball milling. At the same time, 3600g of grinding balls are added. After adding the aluminum powder, the speed of the ball mill is 350 rpm and the milling time is 1 hour. After the ball milling is completed, 110g of the mixed powder is taken out of the ball mill tank to fill the brake disc 1 / 4 part of the raw materials on the inner side, 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...

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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 method for preparing an aluminum-based composite material brake disc. Background technique [0002] Lightweight is becoming one of the frontiers and hotspots of the motorcycle industry in the 21st century. Under the premise of ensuring safety and performance, how to reduce the weight of the motorcycle body, increase the service life and reduce the cost of use has become the core technical issue of current development. . Some data show that reducing the weight of wheels is more effective than reducing the weight of other parts of motorcycles for improving fuel economy. In addition to the lightweight of the motorcycle wheel itself, the motorcycle brake disc, as an important part of the end of the motorcycle wheel, cannot be ignored. In addition, during the braking process of the motorcycle, the temperature of the brake disc and the brake pads rises instantaneously due to...

Claims

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Application Information

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Patent Type & Authority Patents(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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