Influence of Brake Disc on Tribological Performance of Disc Braking

The tribological performances of two kinds of cast iron brake discs(compacted graphite cast iron brake disc and gray cast iron brake disc),paired with developed composite brake pad are studied on the inertial dynamometer bench for railway rolling stocks.The result show that the composition of brake discs has great influence on tribological performances of friction pairs.When the developed composite brake pad paired with gray cast iron brake disc,the friction pair possesses lower speed and load sensitivities,higher friction coefficient,lower surface temperature of brake disc,and higher wear of brake pad.