焊接方向对H型构件焊后变形的影响研究  

Research on the Influence of Welding Direction on the Deformation of H-Shaped Members

作　　者：岳国柱 王国安[1] 徐武彬[1] 李冰[1] YUE Guo-zhu;WANG Guo-an;XU Wu-bin;LI Bing(School of Mechanical and Transportation Engineering,Guangxi University of Science and Technology,Guangxi Liuzhou 545616,China)

机构地区：[1]广西科技大学机械与交通工程学院,广西柳州545616

出　　处：《机械设计与制造》2022年第11期122-125,共4页Machinery Design & Manufacture

基　　金：广西自然科学基金(2018GXNSFBA281195);柳州科学研究与技术开发计划项(2017BC20201);广西高等教育本科教学改革工程项目(2016JGZ139);广西科技计划项目(桂科AC16380032);广西研究生教育创新计划项目(GKYC201605)。

摘　　要：为了控制H型构件在焊接后的焊接变形,这里采用了热弹性变形法对焊接工艺进行分析,研究了焊接方向对H型构件焊后变形的影响。发现焊接方向对H型构件纵向变形的影响不明显,对扭转变形有明显的影响。结果表明:不同的焊接方向对扭转变形有着不同的影响,当上下翼板的焊接方向相同时,上下翼板在焊接后朝着相同的方向发生扭转变形,上下翼板的相对扭转变形较小,一般情况下可直接用于装配;当上下翼板的焊接方向相反时,上下翼板在焊接后朝着相反的方向发生扭转变形,上下翼板的相对扭转变形较大,需要焊后矫正工序来矫正其变形。In order to control the welding deformation of H-shaped members after welding,it uses the thermoelastic deformation method to analyze the welding process,and studies the influence of welding direction on the H-shaped members'post-weld deformation.It is found that the welding direction has no significant effect on the longitudinal deformation of H-shaped members,and it has a significant effect on torsional deformation.The results show that different welding directions have different effects on torsional deformation.When the welding directions of the upper and lower wing plates are the same,the upper and lower wing plates undergo torsional deformation in the same direction after welding,and the relative torsional deformation of the upper and lower wing plates is smaller.In general,it can be directly used for assembly;when the welding directions of the upper and lower wings are reversed,the upper and lower wings are twisted and deformed in the opposite direction after welding,and the relative torsional deformation of the upper and lower wings is relatively large,requiring a post-weld correction process to Correct its deformation.

关 键 词：焊接方向 有限元 扭转变形 热弹性变形 

分 类 号：TH16[机械工程—机械制造及自动化] TG404[金属学及工艺—焊接]