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随着汽车行驶速度的提高,给制动摩擦片的使用工况带来了更苛刻的条件。众所周知,制动摩擦片的吸收能是以车速的二次方比例增加。以三吨的高级轿车为例,当车速以50→100→200公里/小时的情况下制动时,制动器的热负荷为67.5→270→1080千卡。另一方面为了保证在高速下的汽车稳定性,降低汽车重心,制动器缩小,热容量也相应的减少。特别是轿车制动器由鼓式改为盘式结构以后,摩擦片的表面积只有鼓式的1/4～1/6,单位面积吸收功
As the speed of the car increases, the use of brake linings has brought more harsh conditions. As is known to all, the absorption energy of the brake lining increases with the square of the vehicle speed. Taking a three-ton limousine as an example, the brake’s thermal load is 67.5 → 270 → 1080 kcal when braking at 50 → 100 → 200 km / h. On the other hand, in order to ensure the stability of the car at high speed, reduce the car’s center of gravity, reduce the brakes, heat capacity is also reduced accordingly. Especially after the brake of the car is changed from the drum type to the disc type structure, the surface area of the friction plate is only 1/4 ~ 1/6 of the drum type, and the absorbed energy per unit area