反向变形约束在梁类件焊接变形控制中应用  

Application of reverse deformation constraint in welding deformation control of beam parts

作　　者：陈重钧[1] 张亚岐[1] 肖余芳 周副权[1] 尚凯[1] CHEN Zhongjun ZHANG Yaqi XIAO Yufang ZHOU Fuquan SHANG Kai(Technology Centre, Dongfeng Motor Corporation, Wuhan 430058, CH)

机构地区：[1]东风汽车公司技术中心,湖北武汉430058

出　　处：《制造技术与机床》2017年第8期116-120,共5页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金项目(61374196)--长轴距车辆关键技术改进与优化;教育部长江学者和创新团队发展计划项目(IRT1286)--变断面结构车架性能分析与改进

摘　　要：为减小梁类件焊后变形,通过施加反变形量来控制焊接变形。以某车型横梁为例,首先分析未采取反向变形约束状态下焊接后横梁的变形结果,得出相应的焊接工艺参数;并通过数值模拟寻优,确定出最佳的反变形量施加位置和量级;最后,以试制的方式对所提及的算法进行验证,结果表明:焊后变形随反变形量先减后增,当反变形量为4 mm时,焊后变形量最小。该方法可有效控制梁类件的焊后质量,工程应用性强。In order to reduce beam part deformation after welding,this paper controlled welding deformation by application of reverse deformation constraint. Then a beam is to be as an example,analyze the beam deformation after welding without reverse deformation constraint,and the corresponding welding process parameters can be achieved. In addition,the best reverse deformation location and magnitude can be determined by numerical simulation optimization. Finally,the mentioned algorithm was verified in the form of trial production. The results show that the deformation after welding decreased first then increased with reverse deformation increase. The deformation after welding was minimum when the reverse deformation is 4 mm. This method can effectively control the quality of beam parts after welding,and it can have a strong engineering applicability.

关 键 词：梁类件 反变形量 焊接变形 焊后质量 寻优 

分 类 号：TG386[金属学及工艺—金属压力加工]