A kind of anti-electric ablation wear-resisting wear-reducing copper-based composite material and preparation method thereof

Abstract

The invention provides a copper-based composite material resistant to electric ablation, wear-resisting and friction-reducing, and the raw materials include Sn, Pb, Cr, C, TiB 2 and copper. The invention also provides a preparation method of the composite material. In the electric ablation-resistant, wear-resistant and friction-reducing copper-based composite material of the present invention, graphite is added by copper-coated graphite powder, because the copper layer on the graphite surface can reduce the interface energy and density difference between it and the copper alloy powder, making it The distribution in the composite is more uniform. In the preparation method, the heating is realized by induction rapid heating, and then the temperature is uniform, which not only shortens the heating time and saves energy consumption, but also realizes uniform temperature heating, avoiding the skin effect and wrapping caused by the long time of ordinary induction heating damage, while avoiding the problem that the cross-sectional temperature cannot be achieved due to the poor thermal conductivity of the powder.

Description

technical field [0001] The invention belongs to the technical field of copper-based composite materials, and in particular relates to an electric-ablation-resistant, wear-resistant and friction-reducing copper-based composite material and a preparation method thereof. Background technique [0002] The high-speed rail transit system includes: high-speed rail, urban rail, subway, etc. It is an all-electric drive system with a maximum speed of more than 385km / h, which has irreplaceable advantages. The performance of the pantograph slider used for contact and the link slider used for contact between the car body and the track, such as electrical conductivity, high wear resistance and impact resistance, put forward higher requirements. At present, most of the slider materials used in my country are imported products. [0003] CN101345143 discloses a Cu / Ti alloy with high strength, high electrical conductivity, high thermal conductivity, oxidation resistance, fusion welding resis...

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Problems solved by technology

[0005] In order to solve the problems of poor performance batch stability and long process flow of electric ablation-resistant materials in the prior art, one of the purposes of the present invention is to provide an electric ablation-resistant, wear-resistant and friction-reducing copper-based composite material

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