Synthetic brake shoe for high-power locomotive pressed at room temperature and preparation method thereof

Abstract

The invention belongs to the technical field of brake pad materials, and in particular relates to a synthetic brake shoe for high-power locomotive pressed at room temperature and a preparation method thereof. The synthetic brake shoe friction body is synthesized from materials with the following volume ratio: high vinyl butadiene rubber 25 ~30, steel fiber 7~10, aramid pulp 5~7.9, mineral fiber 5~9, sepiolite fiber 3~6, ​​zinc oxide 0.4~2, zinc stearate 0.1~0.3, rubber vulcanizing agent TMTD0. 5~3, industrial ethanol 3~8, phenolic resin 12~16, white cast iron 0.5~2.5, potassium feldspar powder 2~5, alumina polishing powder 0.2~0.8, floating beads 2~7.3, light calcium carbonate 2~ 4. Barium sulfate 2-5, granular graphite 1-3, friction modifier 1.5-5, calcium hydroxide 1-3. It is made by batching, banburying, crushing, pressing at room temperature and heat treatment. The synthetic brake shoe can be used in high-power locomotives with a maximum operating speed of 120km / h and an axle load of no more than 25t. It has stable friction performance and excellent wear resistance, and has little wear on wheels and low braking noise.

Description

technical field [0001] The invention belongs to the technical field of brake pad materials, and in particular relates to a synthetic brake shoe for high-power locomotive pressed at room temperature and a preparation method thereof. Background technique [0002] In the prior art, there are various kinds of synthetic brake shoes for locomotives with different preparation methods and are monopolized by a few large multinational companies. However, most of them are prepared by using phenolic resin and rubber as binders, and the production process is hot-pressed and cured between 140°C and 180°C. The performance of the synthetic brake shoe manufactured by this material and process basically meets the braking requirements, but there are many process steps in the manufacturing process, not only the consumption of manpower and equipment resources is large, the working environment of the workers is harsh, and the energy consumption is high, which does not meet the requirements of the...

AI Technical Summary

Problems solved by technology

This formula has stable friction performance and good wear resistance, but there are also the above problems, and there are problems such as easy fracture of friction body and metal inlay when used in the mountainous and humid climate conditions in southern my country.

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