Powder metallurgy wear-resisting brake block and preparing method thereof

Abstract

The invention relates to a powder metallurgy wear-resisting brake block. The powder metallurgy wear-resisting brake block is prepared through material mixing, molding and sintering after even mixing of matter in component according to parts by weight, in particular, Cu powder is 20 parts to 30 parts, Fe powder is 40 parts to 65 parts, the Al powder is 0.5 part to 1 part, the Cr powder is 2 parts to 5 parts, the total part number of tetrabutyl titanate and titanium tetrachloride in a mixed solution of the tetrabutyl titanate and the titanium tetrachloride is 2 to 5, colloidal graphite in a colloidal graphite solution is 10 parts to 25 parts, and Mo powder 2.3 parts to 3.6 parts; and the colloidal graphite solution and the mixed solution of the tetrabutyl titanate and the titanium tetrachloride are mixed to be dropped into above ground pre-excitation alloy powder to be evenly mixed. According to the powder metallurgy wear-resisting brake block, a graphite and titanium dioxide mixture isprepared through the colloidal graphite and a titanium source precursor, then high temperature in situ synthesis is carried out to synthesize TiC powder, the TiC powder can be distributed into the alloy powder very evenly, and the wear-resisting and heat-resisting performance of the brake block are effectively improved.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, in particular to a powder metallurgy wear-resistant brake pad and a preparation method thereof. Background technique [0002] Brake pads are also called brake pads. In the braking system of a car, the brake pad is the most critical safety part, and the brake pad plays a decisive role in the quality of all braking effects, so it is said that a good brake pad is the protector of people and cars. [0003] Brake lining is generally composed of steel plate, adhesive insulation layer and friction block. The steel plate should be coated to prevent rust. During the coating process, the SMT-4 furnace temperature tracker is used to detect the temperature distribution of the coating process to ensure quality. The thermal insulation layer is composed of materials that do not transfer heat, and the purpose is to insulate. The friction block is composed of friction materials and adhesives. When braking, it ...

AI Technical Summary

Problems solved by technology

Applying TiC powder to the brake pad will effectively improve the wear resistance of the brake pad, but the TiC powder is easy to agglomerate in the alloy powder. Therefore, how to evenly disperse the TiC powder in the alloy powder is currently to be solved. technical problem