Friction is a work that must be produced when the brake is working. During the friction process between the brake lining and the coupler in the brake, the avoided interaction will cause the loss and transfer of the surface material, which will cause wear. How to increase the gap of the brake suit until the lining and drum can no longer be used, which is the service life of the brake pair.
Considering the safety and reliability of the brake, it is hoped that the friction coefficient of the brake pair is high, especially at high temperatures, it can still maintain a high friction coefficient, that is, there is sufficient braking friction torque. But generally speaking, the higher the friction coefficient, the greater the shear resistance caused by friction, and the greater the shear stress on the surface, so the loss or damage of the friction surface material will be more serious, the wear will be greater, and the service life will be greater. also shorter. Therefore, friction and wear are two related and contradictory aspects in the friction process. Different working conditions and requirements have different emphases. However, for the brake friction pair, a certain frictional resistance is required without causing excessive wear. The form of brake pair wear is related to the friction state in the friction process, and varies with working conditions and friction pair materials.
