Casting Defect Analysis of Wear-resisting Ring Inlaid in Aluminum Alloy Piston
The common casting-defects of wear-resisting ring inlaid in aluminum alloy piston was analyzed and summed up,and the corresponding settlement measure in accordance with the different defect forms was put forward.The aluminizing layer of wear-resisting ring was metallurgic link through atom diffusing action under high temperature aluminum liquid,and was gained by casting method,so the probability of causing defects was more greatly.There are three kinds of casting defects during the forming aluminizing layer by casting: oxide defects,wanting aluminizing and cracks in the intermetallic layer.Peeling off the wear-resisting ring from piston and taking a sample for metallographic analysis,the defect form and the cause of formation were analyzed and studied,then the different settlement methods chiefly from the production technology angle were given out,respectively.