振动降低或消除大型薄壁焊接件残余应力的研究  

Vibratory Stress Relief Research of Large Thin-walled Welded Parts

作　　者：赵林[1,2] 王国顺 梁庆华[1,2] 彭金华 李贤飞 

机构地区：[1]上海交通大学机械与动力工程院 [2]上海威士机械有限公司,上海201705

出　　处：《机械设计与研究》2013年第5期34-36,41,共4页Machine Design And Research

基　　金：国家科技部支撑计划资助项目(2011BAF12B01)

摘　　要：金属工件在成型、加工、焊接、热处理中由于外力的局部施加或者温度不均匀都会在体内留下残余应力。尤其对如隧道式连续洗衣机组(洗衣龙)内筒这类型的大尺寸薄壁焊接件,残余应力影响较为突出。文中研究了按国家振动时效的工艺标准用振动时效的方法,降低或消除洗衣龙内筒焊接件残余应力。Considerable residual stresses exist in the metal workpieces when they are formed by being processed,welded or heat-treated.The reason is mainly because the external forces acting on the metal workpieces are not balanced partially,and the heat quantity is not always average around the workpiece,especially when we weld a large thin-walled parts,eg.The inner barrel of Continuous Batch Washer （CBW）,much residual stresses exist in the inner barrels.Sometime the peak value of residual stress is so high that engineers cannot be ignored at all.What＇s more,much residual stresses could destroy the welded inner barrels.So this article disscusses and researches Vibratory Stress Relief to reduce or eliminate the residual stresses in the manufacture.

关 键 词：洗衣龙 焊接残余应力 振动时效 残余应力微观机理 

分 类 号：TH11[机械工程—机械设计及理论]