A preparation method of powder metallurgy friction material

A friction material and powder metallurgy technology, which is applied in the field of powder metallurgy friction material preparation, can solve the problems of poor wear resistance

Active Publication Date: 2021-04-30
青岛方冠摩擦材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Technical problem to be solved by the present invention: Aiming at the problem of poor wear resistance of existing friction materials, a preparation method of powder metallurgy friction materials is provided

Method used

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  • A preparation method of powder metallurgy friction material

Examples

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Effect test

example 1

[0034] Take copper powder, iron powder, modified resin, friction filler, and lubricating component, mix copper powder, iron powder, modified resin, friction filler, and lubricating component, and stir at a high speed of 1000r / min for 6h, that is A precursor is obtained; the precursor is subjected to compression molding to obtain a green body, and the green body is subjected to heat preservation treatment and cooled to room temperature to obtain a powder metallurgy friction material. The modified resin preparation steps are: get epoxy resin, butadiene rubber, benzoyl peroxide, cerium oxide, lanthanum stearate, calcium carbonate whiskers, UVP-327; Benzoyl, cerium oxide, lanthanum stearate, calcium carbonate whiskers and UVP-327 were mixed and placed in an open mill, and kneaded for 2 hours at a stirring speed of 400r / min to obtain a blend, and the blend After vulcanization treatment, the modified resin can be obtained. The preparation steps of the friction filler are as follows...

example 2

[0036] Take copper powder, iron powder, modified resin, friction filler, and lubricating component, mix copper powder, iron powder, modified resin, friction filler, and lubricating component, and stir at a high speed of 1500r / min for 8h, that is A precursor is obtained; the precursor is subjected to compression molding to obtain a green body, and the green body is subjected to heat preservation treatment and cooled to room temperature to obtain a powder metallurgy friction material. The modified resin preparation steps are: get epoxy resin, butadiene rubber, benzoyl peroxide, cerium oxide, lanthanum stearate, calcium carbonate whiskers, UVP-327; Benzoyl, cerium oxide, lanthanum stearate, calcium carbonate whiskers and UVP-327 were mixed and placed in an open mixer, and kneaded for 2 hours at a stirring speed of 450r / min to obtain a blend, and the blend After vulcanization treatment, the modified resin can be obtained. The preparation steps of the friction filler are as follow...

example 3

[0038] Take copper powder, iron powder, modified resin, friction filler, and lubricating component, mix copper powder, iron powder, modified resin, friction filler, and lubricating component, and stir at a high speed of 2000r / min for 10h, that is A precursor is obtained; the precursor is subjected to compression molding to obtain a green body, and the green body is subjected to heat preservation treatment and cooled to room temperature to obtain a powder metallurgy friction material. The modified resin preparation steps are: get epoxy resin, butadiene rubber, benzoyl peroxide, cerium oxide, lanthanum stearate, calcium carbonate whiskers, UVP-327; Benzoyl, cerium oxide, lanthanum stearate, calcium carbonate whiskers and UVP-327 were mixed and placed in an open mixer, and kneaded for 3 hours at a stirring speed of 500r / min to obtain a blend, and the blend After vulcanization treatment, the modified resin can be obtained. The preparation steps of the friction filler are as follo...

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Abstract

The invention relates to a preparation method of a powder metallurgy friction material, which belongs to the technical field of friction materials. In the present invention, the bonding between copper-coated silicon carbide particles and the substrate is tight, and silicon carbide has outstanding advantages such as low density, small thermal expansion coefficient, high strength, high elastic modulus, high melting point and stable chemical properties, and can be used in high-energy braking processes. Keep the friction performance of the material stable, and its good thermal conductivity can also accelerate the conduction of friction heat on the friction surface of the material during the high-energy braking process; the present invention adopts butadiene resin and rare earth element modified epoxy resin, because rubber with low surface energy tends to Adsorbed on the surface of rare earth particles with high surface energy, this adsorption can improve the strength of rubber, and under the action of stress, it can slide on the surface of rare earth particles, redistribute the stress in the material, avoid stress concentration, and improve the modification. The mechanical properties of the resin improve the wear resistance of the powder metallurgy friction material.

Description

technical field [0001] The invention relates to a preparation method of a powder metallurgy friction material, which belongs to the technical field of friction materials. Background technique [0002] Friction materials can be divided into two categories: non-metal-based and metal-based. The traditional non-metal-based friction materials are mainly asbestos friction materials, which have been gradually replaced by metal fibers, inorganic fibers and organic fibers because of their environmental pollution and poor high temperature stability. Instead, especially in recent years, the emergence of carbon-carbon composite materials has broadened the application fields of friction materials. Metal-based friction materials are divided into single metal and powder metallurgy friction materials. The former mainly refers to steel, cast iron, bronze, etc., and powder metallurgy friction materials mainly refer to iron-based, copper-based and iron-copper-based friction materials. Single ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C47/04C22C49/02C25D3/38C22C49/14C22C101/08
Inventor 赵玲玲
Owner 青岛方冠摩擦材料有限公司
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