通过对低碳钢对接接头残余角变形量进行数据采集,得到了残余焊接角变形量与不同刚性约束时间的关系曲线,并进行了分析。认为:在焊接过程中,刚性约束对减小残余角变形量效果明显;随着刚性约束时间的增加,焊接残余角变形量明显减小;当焊接电弧熄灭后,继续增加刚性约束时间对减小残余角变形量没有明显效果。 Through the data acquisition of the residual angle deformation of the butt joint of mild steel, the curve of the residual welding angle deformation with different rigid constraint time is obtained and analyzed. It is concluded that the rigid restraint has an obvious effect on reducing the residual deformation during the welding process. With the increase of the rigid restraint time, the deformation of the welding residual angle decreases obviously. When the welding arc goes out, the rigid restraint time continues to increase Residual angle deformation has no significant effect.