The relationship between coefficient of friction and operating temperature
In addition to the coefficient of friction, the effective operating temperature of the brake pad is also important. The various metals and compounds used to make brake pads are only effective at a certain temperature. To increase the effective working temperature of brake pads, manufacturers add different metals or other synthetic materials to the brake pad formula, and use high temperature and pressure to fuse various materials into one composite material.
It is also because no locomotive can contain all the characteristics in the real world, so manufacturers prepare corresponding products according to the needs of different locomotives. The difference between the characteristics of street and racing brake pads lies in the temperature difference generated when braking. A racing car needs to constantly exert 100% of its braking power at extremely high speeds, and the range of conversion of kinetic energy into heat energy is unimaginable for street cars. For the braking system used on ordinary streets, if the brakes are applied with full force for about ten times in a row, the brake pads will begin to "heat failure". Therefore, the force leather used in racing cars must maintain a high-efficiency friction coefficient at high temperatures, so at normal temperatures, the friction coefficient will be poor. From the picture above, we can clearly see that the brake pads used in racing cars perform much worse than the brake pads used in sports cars before 250 degrees Celsius. But when the temperature is between 300 and 500 degrees, the friction coefficient of the brake pads used in racing cars is far better than that used in sports cars.
Is the coefficient of friction important, or is the handle important?
In the real world, there are more than three types of brake pads?
It should also be noted that when the brake pad operation is involved, it should minimize the interference to the control, that is, the feel must be gradual to facilitate the control. Brake pads with a higher coefficient of friction usually have greater interference, which is not conducive to handling. Therefore, for those who pay attention to the handling of the brakes, or those who need to use them in wet areas, they will choose brake pads with a lower friction coefficient.
