激光-CMT复合焊接内涵、研究现状与展望  

Connotation, Research Status and Expectation of Laser-CMT Hybrid Welding

作　　者：赵俊鹏 刘长军[1] 刘子奇 李昊依 Zhao Junpeng;Liu Changjun;Liu Ziqi;Li Haoyi(College of Chemical Equipment,ShenyangUniversity of Technology,Liaoyang,Liaoning 111000,China;Liaoyang Cloud-dream Additive Manufacturing Technology Co.,Ltd.,Liaoyang,Liaoning 111000,China)

机构地区：[1]沈阳工业大学化工装备学院,辽宁辽阳111000 [2]辽阳云梦增材科技有限公司,辽宁辽阳111003

出　　处：《应用激光》2022年第9期1-11,共11页Applied Laser

基　　金：辽宁省高等学校基本科研重点项目(LZGD2017037)。

摘　　要：激光-CMT复合焊接是将高能束激光与冷金属过渡(CMT)技术相结合的一种新型激光-电弧复合焊接技术,与传统的激光-MIG复合焊接相比,CMT工艺热输入极低,焊接过程更加稳定,能够实现高效无飞溅焊接过程,易获得高质量焊接接头。该项技术越来越受到国内外学者关注,在难熔难焊连接方面被不断探索和认知,具有广泛的工业应用场景。在分析相关文献的基础上,首先,概述了激光-CMT复合焊接系统构成及内涵,介绍了激光-CMT复合焊接中焊缝成形、熔滴过渡、熔池形貌以及焊接接头等方面的发展现状,以及目前还存在的一些问题;其次,提出了关于激光-CMT复合焊接过程的模拟仿真必要性及研究方法;最后,展望了激光-CMT复合焊接技术的未来发展方向和研究重点。Laser-CMT hybrid welding is a new laser arc hybrid welding technology combining high-energy beam laser and cold metal transition(CMT) technique. Compared with traditional laser MIG hybrid welding, CMT process has extremely low heat input, more stable welding process, which can realize high-efficiency spatter free welding process and is easy to obtain high-quality welded joints. This technology has attracted more and more attention from scholars at home and abroad. It has been continuously explored and recognized in terms of refractory and weldable connection, and has a wide range of industrial application scenarios. Based on the analysis of relevant literature, this paper first summarizes the composition and connotation of laser-CMT hybrid welding system, then reviews the development status of weld formation, droplet transfer, weld pool morphology and welded joints in laser-CMT hybrid welding, as well as some existing problems. Secondly, the necessity and research method of simulation of laser-CMT hybrid welding process are put forward. Finally, the future development direction and research focus of laser-CMT hybrid welding technology are prospected.

关 键 词：激光-CMT复合焊接 热输入 焊接接头 熔滴过渡 模拟仿真 

分 类 号：TG456.7[金属学及工艺—焊接] TG444.72