When selecting brake shoe, the dynamic friction coefficient must fulfill the request of both brake capability and stability.
选择鼓式制动器摩擦片时，动摩擦系数的选择既要满足制动性能，同时也要满足稳定性。
2
The invention increases the contact area between the football and the shoe surface, increases the friction and has an adaptive and flexible wearing.
本发明提高了球和鞋表的接触面积，增加了摩擦力，穿着具有较好的适应性和弹性。
3
The composite brake shoe of cast iron is developed to improve the running speed on existing line. The ceramic particles are used in the brake shoe to improve the friction coefficient.