Asbestos-free metal-free drum brake lining used in vehicle and manufacture method therefor

Abstract

The invention discloses a kind of drum brake staff facing used in cars with none asbestos and none metal and the production technology. The component recipes of drum brake staff facing said above are: polyacrylonitrile fiber 1~10%, the oil of cashew shell friction-type mix 2~10%, barite powder 8~20%, heavy calcium carbonate 5-25%, flour acrylonitrile butadiene rubber 2~15%, the mineral fiber 2~6%, the graphite 3~18%, zircon powder 1~10%, the oil of cashew shell phenol-formaldehyde resin modified 10~15%, premix compound 3~15%, glass fiber 2~15%. The production technology is that make the component told above into three times stir mixing and weigh the amount of last formed material with the need of ordinance about the drum brake facing then chill-pressing confectioning forms cool base and then heat pressing confectioning, heat processing and grind on, drill steps and so on then processing make into production. The recipe production is characterized in that: light weight, stabilize coefficient of friction, soft and sensitive braking, and comfort, noiseless and agree the requirement of environmental protection.

Description

Technical field:

[0001] The invention belongs to the technical field of automobile brake systems, and in particular relates to a production formula and a production process of a drum brake lining for automobiles. Background technique:

[0002] Brake lining is one of the essential accessories of automobiles and other motor vehicles, and it is related to personal safety. It is mainly composed of three parts: binder, reinforcing material, and friction filler. The reinforcing material used before the 1990s was mainly asbestos, and asbestos would cause environmental pollution and endanger human health. With the new situation of China's entry into WTO and the rapid development of the automobile industry, the procurement of auto parts has also become a global development trend. The amount of brake linings is increasing year by year, and higher requirements are put forward for its performance. In order to connect with the international market, the domestic automobile friction mater...