Friction is a process that must occur when the brake is running. During friction, the brake linings and mating parts of the brake prevent the loss and transfer of the outer layer of raw materials caused by the mutual reaction, which causes wear. This will slowly increase the brake gap until the lining and drum can no longer be used. This is the working life of the brake.
Considering the reliability of the brake, the friction index of the brake is very high, especially at high temperatures. It can also maintain a large friction index, that is, enough braking friction torque. But generally speaking, the greater the friction index, the higher the resistance generated by friction and the greater the shear stress on the outside. Therefore, the loss or damage of the friction surface material will be more severe. The greater the wear and tear, the shorter the working life. Therefore, friction and wear are two aspects that are both related and contradictory during friction. Different working environment and conditions will have different emphasis. But for brakes, some frictional resistance is required but it will not cause relatively large wear. Brake wear is related to the friction state during friction, and it varies with the working environment and brake materials.
