【摘要】 对钩舌产生的两种典型失效形式—磨损和裂纹进行了详细观察 ,并对其形成机理进行了探讨。结果表明 ,在使用过程中钩舌产生的摩擦和磨粒磨损是钩舌磨损的主要原因 ;钩舌在铸造成形过程中形成的组织缺陷和在使用过程中由冲击和摩擦磨损产生的应力集中是产生裂纹的主要原因更多还原

【Abstract】 Two typical failures of abrasive wear and cracks for the hook head were studied,and its mechanisms were discussed.The results show that the abrasive wear is mainly resulted from the friction and grain abrasion in its service.The crack failure of the hook head mainly resulted from the structure defects in casting,and the stress concentration caused by the impact and the abrasion.更多还原