Analysis on Fracture Failure of Rear Semi-axle of Certain Type Tractor
The rear semi-axle of certain type tractor fractured in early stage of service life.Through macrography,fracture surface analysis,metallography test,chemical composition analysis,performance test and operation status investigation,the fracture cause was found out.The results show that the axle has defects in heat treatment,which leads to micro crack in early stage of service life and the extended crack finally causes fatigue fracture.