密炼技术在轨道交通合成闸片及闸瓦生产上的应用

Banburying technology in production of composite brake pads and brake shoes

轨道交通合成闸片和制动盘在高速制动时会产生局部温度过高的热点现象,严重时制动盘会产生热裂纹,这种现象的产生是由于轨道交通盘式制动器夹紧力较小,闸片不易与制动盘贴合,采用压缩模量较小的闸片材料可以有效地解决这一问题。采用密炼工艺制作合成闸片样件,同时采用干法混料工艺制作对比样件,并对两类样件的压缩性能和惯性台架试验后制动盘的表面状况进行对比,结果表明,采用密炼工艺生产合成闸片可以有效地解决制动盘局部热点现象。

Composite brake pad and brake disc generate local high temperature hot phenomenon during high speed braking,and severe brake disc develops hot crack.Such phenomenon is due to the smaller disc brake clamping force and poor closure performance of brake pad and brake disc,so the brake pad material with smaller compression modulus solves this problem effectively.With the banburying process of composite brake pad samples,and making comparison samples by dry mixing technique,the compression performance of the two different kinds of samples and brake disc surface conditions after the inertia bench tests are compared.The results show that the banburying process to produce composite brake pads can effectively solve the hot spot problem.