非等厚不锈钢板电阻点焊的熔核偏移  

Nugget Shifting in Resistance Spot Welding of Unequal Thickness Stainless Steel Sheet

作　　者：邱然锋[1] 李久勇 张振伟 王彤勇 刘肖扬 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]一拖(洛阳)福莱格车身有限公司,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2017年第6期7-10,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(U1204520);河南省国际合作基金项目(162102410023);河南省高校科技创新人才计划基金项目(16HASTIT050)

摘　　要：针对非等厚不锈钢板点焊熔核偏移的问题,采用3种电极组合方式对非等厚不锈钢板进行点焊,测量了接头断面相关特征尺寸,探讨了熔核偏移对接头性能的影响,分析了电极组合方式对熔核偏移的影响。研究结果表明:非等厚不锈钢点焊时采用反焊法能使其绝对偏移量减小,采用正焊法能使薄板与厚板两侧的焊透率较接近。熔核绝对偏移量、相对偏移量对接头抗剪力影响较小。To solve the problem of nugget shifting in spot welding of unequal thickness stainless steel sheet,the unequal thickness stainless steel sheets were welded by resistance spot welding with three types of electrode combinations. The effect of electrode combination type on the nugget shifting was studied. The relevant feature sizes of weld cross-section were measured. The influence of nugget shifting on the property of joint was analyzed. The results reveal that the nugget absolute shifting is decreased by inverse welding method. The penetration rate of thin plate is close to that of thick plate by positive welding method. The nugget absolute shifting and relative shifting have little effect on the tensile shear of joint.

关 键 词：不锈钢 电阻点焊 熔核 性能 偏移 

分 类 号：TG441.2[金属学及工艺—焊接]