Preparation method of copper-based powder metallurgy friction material

Abstract

The invention belongs to the field of material processing, and particularly relates to a copper-based powder metallurgy friction material preparation method.The copper-based powder metallurgy friction material comprises a main box frame, a through slot is formed in the upper portion of an inner cavity of the main box frame, and a heat insulation protection plate is slidably connected to the upper portion of the inner wall of the main box frame through the through slot; fixing bayonets are evenly formed in the left side and the right side of the middle of the inner wall of the main box frame, and centrifugal rotating devices are evenly arranged in the middle of the inner wall of the main box frame through the fixing bayonets. According to the device, in the process of calcining the mixed materials, the shaping barrel is heated extremely uniformly, the problem that the mixed materials in the shaping barrel are heated unevenly, and consequently material finished products are poor is solved, centrifugal force generated when the materials rotate can balance the gravity of the materials, and therefore the materials are not prone to falling off in the calcining process. The problem that heavy materials are deposited and accumulated due to the gravity difference of the materials is solved, and then the problem that the mechanical property of a material finished product is seriously affected due to uneven material mass distribution is avoided.

Description

technical field [0001] The invention belongs to the field of material processing, in particular to a preparation method of a copper-based powder metallurgy friction material. Background technique [0002] Copper-based powder metallurgy friction material is based on copper, adding matrix strengthening components (Fe, Ni, Mo, Ti, Sn, Zn, P, etc.), friction components (SiO2, A12O3, SiC, asbestos, metal, ZrO2, etc. Non-metallic oxides, carbides, nitrides) and lubricating components (graphite, MoS2, CaF2, WS2, B4C, BN, Pb, Bi, etc.) sintered materials. Copper-based powder metallurgy brake pads show good comprehensive friction and wear properties in the braking process under the combined action of the above components after mixing, cold pressing and sintering, and are currently widely used high-speed train brake pad materials. [0003] In order to ensure the performance of the copper-based powder metallurgy friction material, the above materials need to be mixed evenly during the...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a copper-based powder metallurgy friction material, which solves the problem of material quality in the process of shaping and extrusion due to the gravity of the material itself during the manufacturing process. It may be unevenly distributed, which will seriously affect the mechanical properties of the finished material

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