Powder metallurgy friction material for high-speed train braking and preparation method of powder metallurgy friction material
A technology of powder metallurgy and friction materials, which is applied in the field of powder metallurgy materials, can solve the problems that synthetic friction materials cannot meet the technical requirements and the wear performance requirements are very strict, so as to improve its own shear strength and compressive strength, excellent mechanical properties, Effect of improving high temperature friction performance
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[0030] Example 1
[0031] This embodiment provides a powder metallurgy friction material for high-speed train braking, which is specifically as follows:
Example Embodiment
[0032] This embodiment 5kg includes the following raw materials: 2750g copper powder, 500g iron powder, 600g copper-plated flake graphite, 450g copper-plated graphite particles, 500g ferrochrome powder, 100g molybdenum disulfide powder, and 100g alumina fiber;
[0033] Wherein, the copper powder adopts electrolytic copper powder with a particle size distribution range of 50-100 mesh;
[0034] The iron powder adopts atomized iron powder with a particle size distribution range of 50-100 mesh;
[0035] The copper-plated flake graphite adopts artificial flake graphite to be copper-plated by electroless plating, the copper content is 40 wt%, and the particle size distribution ranges from 20 to 80 mesh; the copper content of the copper-plated graphite particles is 25 wt%;
[0036] The particle size distribution range of the molybdenum disulfide is 100-150 mesh;
[0037] The particle size distribution range of the ferrochromium powder is 80-150 mesh, and the chromium content is 50wt% and the i...
Example Embodiment
[0041] Example 2
[0042] This embodiment provides a powder metallurgy friction material for high-speed train braking, which is specifically as follows:
[0043] This embodiment 5kg includes the following raw materials: 2250g copper powder, 1000g iron powder, 600g copper-plated flake graphite, 400g copper-plated graphite particles, 500g ferrochrome powder, 150g molybdenum disulfide powder, and 100g alumina fiber;
[0044] Wherein, the copper powder adopts electrolytic copper powder with a particle size distribution range of 50-100 mesh;
[0045] The iron powder adopts atomized iron powder with a particle size distribution range of 150-200 mesh;
[0046] The copper-plated flake graphite adopts artificial flake graphite to be copper-plated by electroless plating, and the copper content is 42 wt%, and the particle size distribution range is 80-120 mesh; the copper content of the copper-plated graphite particle is 28 wt%;
[0047] The particle size distribution range of the molybdenum disulf...
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