Novel mosaic composition brake shoe and manufacturing method thereof

Abstract

The embodiment of the invention provides a novel mosaic composition brake shoe and a manufacturing method thereof. In the method, the novel composition brake shoe is formed by combining a high molecular composite friction material and cast iron inserts; and the method particularly comprises the following steps of: welding the cast iron inserts with hardness and friction coefficient matched with those of the high molecular composite friction material at the two ends of a steel back; pressing the high molecular composite friction material and the cast iron inserts into a whole by cold press molding to form a friction surface of the novel composition brake shoe; and curing the novel composition brake shoe formed by the cold press molding, and polishing the inner cambered surface of a friction body to obtain the novel composition brake shoe with the iron cast inserts. Thus the heat conductivity of the composition brake shoe can be obviously improved and the heat fade of the composition brake shoe can be reduced so as to ensure that the composition brake shoe has stable friction performance during the braking.

Description

technical field [0001] The invention relates to the field of brake shoes for trains, in particular to a novel inlaid synthetic brake shoe and a manufacturing method thereof. Background technique [0002] At present, the railway is an important infrastructure of the country, the main artery of the national economy and a popular means of transportation. Increased weight, increased speed and increased towing weight all place higher demands on braking devices and braking materials. Among them, the brake shoe, as the main component that provides friction and converts energy during train braking, is required to have high mechanical strength, good heat resistance and thermal conductivity, stable friction performance, low wear and reduced Abrasion and thermal damage to wheels. [0003] The brake shoe materials used in the prior art can be roughly classified into three types: cast iron brake shoes, synthetic brake shoes and powder metallurgy brake shoes. However, cast iron brake s...

AI Technical Summary

Problems solved by technology

However, in the prior art, the base material of the synthetic brake shoe has poor heat resistance, thermal fading, and more seriously, poor thermal conductivity, which will lead to changes in the structure of the wheel material, and in severe cases, thermal cracks will occur on the wheel tread , thermal cracking, thermal peeling and other phenomena, which affect the use of brake shoes

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