Research Status and Progress of Forming Technology and Failure Analysis of Automobile Brake Drum

Author of the article:LEI Yu1 , ZHANG Zhongming1 , WANG Jiahe1 , HU Bo2 , XU Chunjie1

Author's Workplace：1. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China; 2. CSIC No. 12 Research Institute, Xingping 713102, China

Key Words：drum brake; foundry technology; failure analysis; fatigue life prediction

Abstract：Brake drum is a key component of commercial vehicle, which plays a vital role in the safe running of the vehicle. The soundness, density and microstructure uniformity of the brake drum all affect the braking effect. The development status of brake drum was summarized from the aspects of brake drum material, molding way, casting method and casting technology. The failure modes and reasons of brake drums were analyzed, and the research progress in fatigue life prediction of brake drums was reviewed.