Friction-resistant brake pad for high-speed train and preparation method thereof

Abstract

The invention discloses a friction-resistant brake pad for a high-speed train and a preparation method thereof, and belongs to the field of high-temperature wear-resistant brake pad devices and preparation methods thereof. The brake pad comprises a substrate lubrication heat conductor and a plurality of wear-resistant body crystal block array layers distributed in the substrate lubrication heat conductor. The brake pad of the high-speed train has excellent wear resistance and heat conduction performance, the wear-resistant body crystal block array layers and the substrate lubrication heat conductor are sintered to form a non-uniform composite new material with a special stress and heat conduction structure, different functional phases are separated and combined, the service life of the brake material is prolonged through the wear-resistant phase, the heat conduction performance is improved through the heat conduction phase, mutual independence of structures and mutual supplement of functions are achieved, and the method can be a feasible way for improving the service performance of the high-speed railway brake material.

Description

technical field [0001] The invention belongs to the field of train high-temperature wear-resistant brake pads and a preparation method thereof, and in particular relates to a high-speed train friction-resistant brake pad and a preparation method thereof. Background technique [0002] During the braking process of a high-speed train, the kinetic energy of high-speed operation will be converted into a large amount of frictional heat between the wheel disc and the brake pads, resulting in high temperature of the brake pads, and insufficient structural strength or heat dissipation efficiency of the brake pads, which may cause It cracks or even fails, thereby affecting driving safety. [0003] Existing high-speed train brake pads are usually divided into three layers. The innermost copper base of the brake pad is used as a heat dissipation plate, and the outermost layer of the brake pad is a hard alloy wear-resistant layer with uniform density. The wear-resistant layers are conn...

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Problems solved by technology

[0008] In order to solve the three-layer structure of the existing high-speed train brake pads, the connection strength between the graphite layer in the middle layer and the wear-resistant layer of the outer layer is relatively weak, relatively easy to damage, and affects the service life; and the wear-resistant layer is uniform The density distribution structure of ceramic particles weakens the heat conduction rate of the wear-resistant layer itself, and the technical problem that the frictional heat cannot be quickly transferred to the graphite layer and the copper base. The invention provides a high-speed train friction-resistant brake pad and its Preparation

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