提高厚斗齿铸件使用寿命的研究  

Research on Improving Life of Heavy Section Tooth Casting

作　　者：陈映川[1] 陆卫倩[1] 

机构地区：[1]上海电机学院机械工程学院,上海200240

出　　处：《热加工工艺》2010年第19期181-182,185,共3页Hot Working Technology

摘　　要：某铸造厂将挖掘机上斗齿的齿尖改为厚齿后发生断裂等早期失效。分析了厚斗齿可能失效的各种原因。经研究发现,齿尖、齿腔厚薄尺寸相差较大引起的应力是断裂失效的主要原因,并针对性的采取了一系列措施,从根本上解决了早期失效的问题,大大提高了厚斗齿铸件的使用寿命。The early failure happened after changing teeth thickness of heavy hection hooth casting in a casting plant.The reasons for failure were analyzed.The main reason was the stress induced by difference of wall thickness.The early failure was resolved by adopting a series of measures.The life of the castings is greatly enhanced in actual production.

关 键 词：厚斗齿 应力集中 涂料处理 齿尖快冷 整体缓冷 

分 类 号：TG245[金属学及工艺—铸造]