Q345B钢MAG焊与激光-MAG复合焊对比研究  

Comparative Study on MAG Welding and Laser-MAG Hybrid Weldingof Q345B Steel

作　　者：曹世杰 毕学松 李志波 侯艳喜 CAO Shijie;BI Xuesong;LI Zhibo;HOU Yanxi(Panasonic Welding Systems(Tangshan)Co.,Ltd.,Tangshan 063020,China;Tangshan Kaiyuan Welding Automation Technology Institute Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]唐山松下产业机器有限公司,河北唐山063020 [2]唐山开元焊接自动化技术研究所有限公司,河北唐山063000

出　　处：《热加工工艺》2024年第17期38-41,共4页Hot Working Technology

基　　金：河北省创新能力提升计划项目(20567601D);河北省科技研发平台建设专项(215676109H)。

摘　　要：对4 mm和8 mm厚的Q345B试板分别进行MAG焊和激光-MAG复合焊的工艺试验研究,分析焊缝成形,检测焊接接头宏观形貌、拉伸性能和弯曲性能。结果显示:相对于常规MAG焊,激光-MAG复合焊能够实现单面焊背面无垫板的自由成形;焊接速度显著提高,焊接作业效率提高一倍以上;焊材消耗减少,仅为MAG焊的22%~27%;焊接热输入小,焊后工件变形显著减小;焊接接头的拉伸和弯曲性能合格,满足实际工程应用要求。MAG welding and laser-MAG hybrid welding process tests were carried out respectively for 4 mm and 8 mm thick Q345B test plates,the weld forming was analyzed and the macromorphology,tensile property and bending property of the welded joints were detected.The results show that compared with the conventional MAG welding,the laser-MAG hybrid welding can realize one-side welding and back side free forming without back plate,the welding speed is significantly improved and the welding efficiency is doubled;the consumption of welding materials is only about 22%-27%of that of MAG;the welding heat input is small,and the workpiece deformation after welding is significantly smaller;the tensile and bending properties of the welded joint are qualified and meet the requirements of practical engineering application.

关 键 词：MAG焊 激光-MAG复合焊 单面焊双面成形 焊接工艺 

分 类 号：TG456.7[金属学及工艺—焊接]