Brake block friction material

Abstract

The invention discloses a brake shoe friction material, belonging to brake shoe material. Based on the traditional half-metal formula, the invention is pressed according to the production method of general brake shoe with the weight proportions of 5%-10% of the modified colophony, 5%-15% of the barium sulfate, 15%-20% of the steel wool, 5%-10% of the friction powder, 8% of the tyre powder, 4%-10% of the graphite, 5%-10% of the coke powder, 5%-10% of the potash feldspar, 2% of the light calcium carbonate, 2% of the antimony sulfide, 4% of the natural fiber, 2% of the rigid fiber, 5%-15% of the meerschaum, 6% of the iron powder, 2% of the zircon, 5%-10% of the vermiculite, 1% of the nitrile, 2% of the carbon, and 3% of the copper fiber. The invention has the advantages of good high-temperature and hot recession resistance, selecting the colophony with high temperature resistance as the bonder, hardly damaging the dual parts, selecting the friction material and metallurgy material with small hardness, and cheap cost.

Description

technical field [0001] The invention relates to automobile brake pads, in particular to a brake pad friction material, which is especially used in various types of cars. Background technique [0002] Traditional asbestos-based, semi-metallic, low-metal non-asbestos brake pads have problems such as low friction coefficient, not environmental protection, easy to generate noise during braking, and serious damage to the counterpart. The more advanced asbestos-free formula has made considerable improvements in some aspects, but there are also disadvantages in terms of high-temperature friction performance stability, service life, raw material costs, and production costs. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the existing brake pad friction materials and provide a brake pad friction material which has good resistance to high temperature and thermal decay, moderate service life (less damage to the counterpart) ...

AI Technical Summary

Problems solved by technology

[0002] Traditional asbestos-based, semi-metallic, low-metal non-asbestos brake pads have problems such as low friction coefficient, not environmentally friendly, easy to generate noise during braking, and serious damage to the mating parts.

The more advanced non-asbestos formula has made considerable improvements in some aspects, but there are also disadvantages in terms of high temperature friction performance stability, service life, raw material costs, production costs, etc.