Magnetic suspension train brake pad material and preparation method

Abstract

The invention provides a magnetic suspension train brake pad material. The magnetic suspension train brake pad material comprises pre-alloyed powder, MoS2 powder, Mo2O3 powder, Cr powder, SiO2 powderand scale-shaped graphite, wherein the pre-alloyed powder is any two combination of Fe-Al powder, Fe-Cu powder and Cu-Al powder; the invention further provides a preparation method of the magnetic suspension train brake pad material. According to the material and the method, the magnetic suspension train brake pad material comprehensively utilizes the advantages of the Fe, the Al and the Cu, the problem that the cost of the brake pad for the magnetic suspension train in the prior art is high is solved, the prepared brake pad material has the advantages of being stable in friction coefficient and good in wear resistance, and safe braking of a magnetic levitation train can be ensured.

Description

technical field [0001] The invention belongs to the technical field of brake pads, and in particular relates to a brake pad material for a magnetic levitation train and a preparation method thereof. Background technique [0002] Medium and low-speed maglev rail transit has the advantages of high environmental protection, good safety, strong climbing ability, small turning radius, low construction cost and good operating efficiency, and can be applied to urban urban areas, short-distance inter-city transportation and tourist attractions. connect. The rail processing, installation accuracy and track alignment of the train will directly affect the stability of the train running. The track of the medium and low-speed maglev train is different from the ordinary wheel rail, and the F-shaped steel guide rail is used. Taking the first medium-low speed maglev line in China with completely independent intellectual property rights - Changsha Maglev Express Line as an example, the mate...

AI Technical Summary

Problems solved by technology

Fe-based powder metallurgy materials have excellent friction properties at high temperatures and can be used in the range of 400-1000 ° C. However, Fe-based powder metallurgy materials have a considerable amount of material wear at low speeds, and due to the affinity between the material and the Fe-based dual , prone to adhesive wear, and the friction coefficient fluctuates greatly

CN102294482B discloses an iron-copper-based powder alloy brake pad and a preparation method thereof. The powder materials include copper powder, iron powder, tin powder, molybdenum powder, silicon carbide, lead powder, molybdenum disulfide and scaly graphite. Pretreatment of raw materials, batching, mixing, pressing, sintering, cooling and machining to form fan-shaped powder alloy friction parts, which are paired with heat-resistant alloy steel or wear-resistant cast iron to form a friction couple, suitable for aircraft multi-disc brakes, or Brakes and clutches for heavy vehicles, but the invention offers a higher cost of mate

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