Abstract��High strength nave bolt fractured during running.The analysis of macro and micro ,chemical composition , metallographic and hardness were carried out on the fractured bolt . The analysis showed that the chemical composition and microstructure were in normal state. Bolt deformation and the force acting on bolt were analyzed,The results showed that the damaged threads and incorrect installation caused lacking of enough pre��force in bolt assembling resulted in the fatigue rupture of nave bolts.
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CHEN Wei��feng1,XU Yun��feng1,REN Peng��bo2��YU Zhao��xin1��XU Guo��ping1. Fracture Analysis About Nave Bolts Used In Truck. Chinese Journal of Iron and Steel, 2011, 29(3): 42-44.