Brake pad includes steel back, friction material and other main parts and other auxiliary parts, i.e., steel back is part of brake pad.
The steel back of main fixed role, 1. Performance: in terms of manufacturing powder of friction materials (most of) the chemical and physical action of high temperature and high pressure, suppress the steel back, forming a solid (also has a separate molding and riveting), some of them will be between steel back and friction materials and cushion layer, can not afford to this part of the friction effect, noise reduction, insulation, cushioning.-- fixed left and right sides;
2. Use: mainly fixed brake pads and brake process with wheel rotation of the brake disc friction between generated by pressure, reach the purpose of braking, the friction of disc brake friction material and friction, is to stop the wheel turning and braking of a force, the opposite force to produce torque in the car, the force is through the steel back to the car (with brake pliers), - the fixed Yu Chuanli role.