激光-MAG电弧复合高速打底焊工艺研究  

Process of High Speed Backing Welding by Laser-MAG Hybrid Welding

作　　者：毕学松 朱加雷[2] 李伟[3] 焦向东[2] 冯聪 Bi Xuesong;Zhu Jialei;Li Wei;Jiao Xiangdong;Feng Cong(Tangshan Kaiyuan Welding Automation Technology Institute Co.,Ltd.,Tangshan,Hebei 063000,China;School of Mechanical Engineering ,Beijing Institute of Petrochemical Technology,Beijing 102617,China;College of Electrical and Mechanical Engineering,Beijing University of Chemical Technology,Beijing 100029 ,China)

机构地区：[1]唐山开元焊接自动化技术研究所有限公司,河北唐山063000 [2]北京石油化工学院机械工程学院,北京102617 [3]北京化工大学机电工程学院,北京100029

出　　处：《应用激光》2019年第2期239-242,共4页Applied Laser

基　　金：河北省‘三三三人才工程’资助项目(项目编号:A201803022)

摘　　要：以10min的Q345B钢板作为实验材料,采用激光MAG复合焊接技术,通过调整焊接电流,送丝速度,焊接速度,光丝间距等复合焊接参数,探索Y型坡口高速打底焊的可行性及相关工艺适应性研究。实验过程中借助高速摄像和电压电流采集器,分析焊接电弧和熔滴过渡的行为特征。结果表明,激光-MAG复合焊能实现最大6mm钝边以及最小角度为35°坡口的高速打底焊,焊速为1m/min,对间隙和错边的适应性较好,激光与电弧电流的匹配对焊接稳定性有很大的影响。Using 10 mm Q345B steel plate as experimental material,laser-MAG hybrid welding was used to explore the feasi bility of high speed backing welding of Y-shaped groove by adjusting welding current. wire feeding speed, welding speed, wire spacing and other hybrid welding parameters. During the experiment, the behavior characteristics of welding arc and droplet transition were analyzed by means of high-speed camera and voltage and current collector. The results show that laser-MAG hybrid welding can realize high speed backing welding with a maximum of 6 mm blunt edge and a minimum angle of 35°groove. The welding speed is 1 m/min, and the adaptability to the gap and the wrong side is better. The matching of laser and arc current has a great influence on the welding stability.

关 键 词：激光-MAG复合焊 Y形坡口 高速打底焊 

分 类 号：TG456.7[金属学及工艺—焊接]