Friction material for brake-shoe of heavy axle-load wagon, and preparation method of wagon brake-shoe

Abstract

The invention discloses a friction material for brake-shoe of heavy axle-load wagon, and a preparation method of a brake-shoe of heavy axle-load wagon. The preparation method of the friction material comprises the following steps: preparing raw materials of the friction material according to corresponding weight ratio of each raw material; adding the prepared raw materials into a meshing-type internal mixer to carry out an internal heating treatment and an internal modulating treatment; discharging the processed raw materials, grinding, and finally granulating so as to obtain the friction material. The method can obtain a friction material having a stable friction performance and good wear resistant property; and at the same time the friction material can be used to manufacture braking parts which can meet the application requirements of heavy axle-load wagon.

Description

technical field [0001] The invention relates to the technical field of railway equipment, in particular to a friction material for a brake shoe of a freight car with a large axle load and a preparation method for the brake shoe of a freight car. Background technique [0002] At present, in the field of railway equipment technology, the requirements for the brake shoes of large-axle-loaded freight cars are different from those of other locomotives and vehicles, and new requirements are put forward for the friction materials and the manufacture of brake shoes. Taking railway wagons as an example, most of the brake shoes for railway wagons currently in use are made of materials with resin as the bonding system, which are prepared by hot pressing. Under normal circumstances, its performance can basically meet the braking requirements, but when the railway freight car is under heavy load and high-speed driving, such as the railway freight car with a full load weight of more than ...

AI Technical Summary

Problems solved by technology

[0003] The existing brake shoes made of resin as the bonding system have insufficient friction performance, friction body is easy to break and fall off, metal inlay is serious, and it is easy to cause wheel scratches, thermal damage, cracks and endanger driving safety. Due to problems such as short service life, it cannot meet the braking requirements of the existing heavy-duty, high-speed and large-axle-loaded railway wagons. Therefore, it is necessary to prepare a brake shoe suitable for large-axle-loaded wagons to meet the braking requirements of heavy-duty railway wagons.

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