摘要
与常规厚板焊接相比,厚板窄间隙MIG(融化极气体保护电弧焊)焊接具有明显优势。目前,对于厚板窄间隙焊接过程中变形的研究一直是难点。实验中,每焊接完一层后,沿着焊缝的方向在母材两侧的对称边上取点,通过测量对称点之间的距离进行数据整理得出变形趋势。通过测量比较,顶层与某一层随着焊接量距离的变化,两侧母材间的缝隙减少。因此,打底焊前需要预留一定的反变形。通过测量比较同层不同点距离的变化发现,越靠近起弧位置,变形越明显。
Compared to conventional thick plate welding,thick plate narrow gap MIG welding has obvious advantages.At present,research on deformation during thick plate narrow gap welding is still difficult.In this experiment,after each layer is welded,the points along the symmetrical sides of the base metal are taken along the direction of the weld,and the deformation trend is obtained by measuring the distance between the symmetrical points.By measuring and comparing the distance between the top layer and a layer along the welding amount,it is concluded that as the welding amount increases,the gap between the two base metals decreases,so a certain reverse deformation needs to be reserved before the bottom welding.In addition,by measuring the change of the distance between different points in the same layer,it is found that the closer to the arcing position,the more obvious the deformation.
作者
明灿
马春伟
MING Can;MA Chunwei(Faculty of Material Engineering,Shanghai University of Engineering Science,Shanghai Songjiang,201600,China)
出处
《智能计算机与应用》
2020年第4期258-260,266,共4页
Intelligent Computer and Applications
关键词
厚板窄间隙
MIG焊接
变形
narrow gap welding
MIG welding
deformation
