Cold pressing manufacturing process of brake block

Abstract

The invention discloses a cold pressing manufacturing process of a brake block. The process is characterized by comprising the steps of 1, preparing a steel back; 2, preparing a gasket material; 3, performing cold pressing and forming for the brake block; 4, shaping and brake block; 5, thermally processing the brake block. Compared with the traditional cold-pressed brake block, the cold-pressed brake block manufactured by the process has the advantages of being high in surface porosity factor, high in high-temperature declining performance, high in shearing resistance, stable in quality, and long in service life.

Description

technical field [0001] The invention relates to a manufacturing process of brake pads for motor vehicles and non-motor vehicles. Background technique [0002] In order to ensure driving safety, no matter motor vehicle or some non-motor vehicles all have brake components with brake pads. An ideal brake pad should have low braking sound when performing braking work (related to the porosity of the brake pad, especially the surface porosity, the greater the surface porosity, the smaller the braking sound, and vice versa), good high temperature decay performance, and shear resistance. Strong cutting force, stable quality, long service life and other excellent comprehensive performance. At present, there are brake pads made by cold-pressing technology on the market, such as the method provided by patent No. 201110457229.4 and patent name "Cold-pressing One-time Forming Method of Disc Brake Pad", but the cold-pressed brake pads made ...

AI Technical Summary

Problems solved by technology

At present, there are brake pads made by cold-pressing technology on the market, such as the method provided by patent No. 201110457229.4 and patent name "Cold-pressing One-time Forming Method of Disc Brake Pad", but the cold-pressed brake pads made by the above-mentioned patented method There are still the following deficiencies in different degrees: 1. The surface porosity is too small: because the brake pads are clamped by the fixture during heat treatment, the surface pressure of the lining material is not conducive to the escape of air, so it is not easy to form surface pores, which is destroyed to a certain extent. The surface porosity is improved; 2. Due to the insufficient reinforcement strength of the lining material, the high temperature recession of the brake pad is not particularly ideal; 3. Due to the cold pressing method, the bonding strength between the lining material and the steel plate is not enough. When the brake pad is subjected to the brake shear force, the lining will easily fall off, and there is a problem with the shear resistance of the brake pad; 4. When cold pressing the brake pad, in order to improve production efficiency, a pressing mold with multiple cavities is used. , that is, each press action will press out multiple brake pads. Due to uneven pressure, the flatness of the steel back cannot be corrected during the cold pressing process (usually the steel back is obtained by punching, The flatness is not high), and the insufficient flatness of the steel back will seriously affect the quality of the brake pads

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