脉冲旁路耦合电弧惰性气体保护焊过程控制  

Control of Pulsed DE-MIG Welding Process

作　　者：朱明[1] 石玗[1] 樊丁[1] 卢立晖[1] 周海[1] 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050

出　　处：《上海交通大学学报》2015年第3期344-347,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(51165023);国家重点基础研究发展规划(973)前期研究专项(2014CB660810);陇原青年创新人才计划;甘肃省自然科学基金项目资助

摘　　要：脉冲旁路耦合电弧惰性气体保护焊是一种新型的低热输入焊接方法.针对该方法焊接过程中耦合电弧稳定性较差的问题,提出通过改变送丝速度调节主路弧长控制耦合电弧稳定性的控制方案并进行了仿真分析,同时采用快速原型技术设计了焊接过程控制系统并进行焊接实验.结果表明:模拟仿真结果证明提出的控制方案可以保证脉冲旁路耦合电弧惰性气体保护焊接过程的稳定性;通过焊接实验验证了仿真结果,同时获得了稳定的焊接过程与成形良好的焊缝.Pulsed DE-MIG welding is a novel welding method which can realize low heat imput. Aimed at the unstable problem of coupling arc in the pulsed DE-MIG welding process, a control scheme was pro- posed which changed the wire feed speed to adjust the main arc length and to control the stability of the coupling arc. The simulations and welding experiments of control scheme were conducted based on the Matlab/Simulink and xPC target welding experiment system. The simulations showed that the control scheme was effective, and the welding results proved the simulations and a good weld apperance was acquired.

关 键 词：脉冲 MIG焊 控制 

分 类 号：TG409[金属学及工艺—焊接]