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Powder-metallurgical automobile brake pad and preparation method thereof

A technology of powder metallurgy and brake pads, which is applied in the field of powder metallurgy automobile brake pads and its preparation, can solve the problems of reduced braking torque, impact on driving safety, pollution of the environment, etc., and achieve the effect of short braking distance and high friction coefficient

Inactive Publication Date: 2017-01-04
贵州新安航空机械有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The friction coefficient of automobile brake pads made of synthetic materials will seriously decrease under high temperature conditions, and with the change of speed, the friction coefficient will fluctuate greatly, resulting in a serious decrease in braking torque and affecting driving safety; Asbestos dust formed during the wear process poses a threat to human health and pollutes the environment

Method used

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  • Powder-metallurgical automobile brake pad and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Copper powder and iron powder are subjected to reduction treatment as required, the reduction temperature of copper powder is 400°C, the reduction temperature of iron powder is 600°C, keep warm in the environment of ammonia decomposition gas for 3 hours, then air cool to room temperature, the reduced copper powder and Iron powder must be sieved through a standard sieve of corresponding particle size; graphite, silicon carbide, quartz sand, and molybdenum disulfide must be dried at a temperature of 150°C. Under constant temperature treatment. The processed raw materials are weighed for each component according to the following parts by weight: 60 parts of iron powder, 10 parts of copper powder, 12 parts of graphite, 4 parts of silicon carbide, 4 parts of quartz sand, 1 part of nickel powder, 4 parts of tungsten carbide, two Molybdenum sulfide 5 parts. Put the finished raw materials into the mixer for mixing. The mixing speed is 30r / min, and the mixing time is 12h. The...

Embodiment 2

[0029]Copper powder and iron powder are subjected to reduction treatment as required, the reduction temperature of copper powder is 450°C, the reduction temperature of iron powder is 700°C, keep warm in the environment of ammonia decomposition gas for 3 hours, then air cool to room temperature, the reduced copper powder and Iron powder must be sieved through a standard sieve of corresponding particle size; graphite, silicon carbide, quartz sand, and molybdenum disulfide must be dried at 200°C, kept warm for 3 hours, cooled with the furnace, and dried at 60°C Under constant temperature treatment. The processed raw materials are weighed for each component according to the following parts by weight: 50 parts of iron powder, 13 parts of copper powder, 15 parts of graphite, 6 parts of silicon carbide, 2 parts of quartz sand, 2 parts of nickel powder, 7 parts of tungsten carbide, Molybdenum sulfide 5 parts. Put the weighed raw materials into the mixer for mixing. The mixing speed ...

Embodiment 3

[0031] Copper powder and iron powder are subjected to reduction treatment as required, the reduction temperature of copper powder is 420°C, the reduction temperature of iron powder is 630°C, keep warm in the environment of ammonia decomposition gas for 3 hours, then air cool to room temperature, the reduced copper powder and Iron powder must be sieved through a standard sieve of corresponding particle size; graphite, silicon carbide, quartz sand, and molybdenum disulfide must be dried at a temperature of 170°C. Under constant temperature treatment. The processed raw materials were weighed for each component according to the following parts by weight: 70 parts of iron powder, 6 parts of copper powder, 10 parts of graphite, 2 parts of silicon carbide, 3 parts of quartz sand, 0.5 part of nickel powder, 1.5 parts of tungsten carbide, Molybdenum sulfide 7 parts. Put the finished raw materials into the mixer for mixing. The mixing speed is 40r / min, and the mixing time is 8h. The ...

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Abstract

The invention discloses a powder-metallurgical automobile brake pad and a preparation method thereof. The powder-metallurgical automobile brake pad consists of the following raw materials: iron powder, copper powder, graphite, silicon carbide, quartz sand, nickel powder, tungsten carbide and molybdenum disulfide. The brake pad with excellent friction performance, ultrahigh wear resistance, high-temperature resistance and stable heat fade is manufactured by a series processing flows of reducing or drying the raw materials, mixing the raw materials, performing compression molding, performing sinter molding and machining in the later period, and is especially suitable for superior quality cars, sports cars and professional racing cars.

Description

technical field [0001] The invention relates to the technical field of automobile brake systems, in particular to a powder metallurgy automobile brake pad and a preparation method thereof. Background technique [0002] In the braking system of a car, brake pads are the most critical safety parts. The brake pads play a decisive role in the quality of all braking effects. Therefore, good brake pads are the protectors of people and cars. Most high-end cars use carbon-ceramic brake discs with good heat resistance and light weight, which poses new challenges to the development and production of matching car brake pads. With the improvement of automobile speed and the gradual strengthening of environmental protection awareness, automobiles have higher and higher requirements for the comprehensive performance of brake pads. The friction coefficient of automobile brake pads made of synthetic materials will seriously decrease under high temperature conditions, and with the change of...

Claims

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Application Information

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IPC IPC(8): C22C38/16C22C38/08C22C30/02C22C32/00C22C1/05C22C33/02F16D69/02
CPCF16D69/027C22C1/05C22C30/02C22C32/0005C22C32/0084C22C32/0089C22C33/0278C22C33/0292C22C38/08C22C38/16F16D2200/0008B22F2998/10B22F1/0003B22F1/145B22F3/14B22F3/02
Inventor 杜怀兵曾治斌徐英黄树华
Owner 贵州新安航空机械有限责任公司
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