University of Shanghai for Science and Technology

Wang Guo

Huan Yun Zhang

Xuegang Zhang

Shuwen Wang

Deyu Zhao

The present invention discloses a vibration-damping and noise-reducing brake disc, where the vibration-damping and noise-reducing brake disc includes an intermediate disc having an outer side and a braking ring which surrounds the outer side of the intermediate disc. Two opposite surfaces of the braking ring are frictional surfaces provided with at least one laser scanning strip, where the laser scanning strip is obtained or formed by laser quenching and hardening treatments of the two frictional surfaces by a laser machine, for changing the physical and mechanical properties of the braking ring, such as the surface and inside hardness, residual stress distribution on the frictional surfaces, and the inside micro-structures of the braking ring, so as to suppress the generation of frictional vibration and noise during braking operations. The vibration-damping and noise-reducing brake disc of the present invention has stable coefficients of friction in braking operations, therefore, the occurrence of frictional noise and vibrations of the brake disc can be reduced, and the operational performance of the vehicle with such brake discs can be improved.

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Shanghai, China

Wang Guo