金属加工（热加工）Issue(9)：55-62,8.
探究激光与MAG电弧在复合焊接中的相互影响
Investigating the interaction between laser and MAG arc in hybrid welding
摘要
Abstract
Numerical simulations were performed to analyze laser welding,MAG welding,and laser-MAG hybrid welding under identical conditions.By comparing the resulting temperature fields and post-weld stress fields,the interaction between the laser and MAG arc during the hybrid welding process was investigated.The results demonstrate that laser-MAG hybrid welding effectively combines the advantages of MAG welding(wider bead width)and laser welding(greater penetration depth),leading to further enlargement of the molten pool dimensions.This results in more uniform heating of the base metal and a reduced cooling rate.Variations in the power of either the laser or the MAG arc directly influence the surface dimensions of the molten pool.Crucially,the dimensions of the weld root region exhibit greater sensitivity to changes in laser power,while showing minimal sensitivity to variations in MAG arc power.The MAG arc exerts a significant post-heating effect on the laser-generated weld seam,effectively lowering its cooling rate.This mechanism mitigates the issue of larger high-stress zones associated with laser welding,which arise from its highly concentrated energy input,lower total heat input,and rapid cooling.Consequently,the hybrid process achieves a more homogeneous stress distribution and reduced residual stress levels within the weld.Therefore,for subsequent structural applications utilizing laser-MAG hybrid welding,the MAG arc welding power should be increased while maintaining acceptable weld morphology in order to significantly enhance the reliability of the welded joint.关键词
激光焊/MAG焊/复合焊/温度场/残余应力Key words
laser welding/MAG welding/hybrid welding/temperature field/residual stress引用本文复制引用
罗煜林..探究激光与MAG电弧在复合焊接中的相互影响[J].金属加工（热加工）,2025,(9):55-62,8.基金项目
龙岩市科技局项目重点项目(2023LYF9010). （2023LYF9010）
