摘要
针对其焊接过程中的电弧动态特性、焊丝熔化规律,采用等效电流路径的方法建立了其焊接电弧的动态数学解析模型.在此基础上,利用MATLAB/Simulink软件平台对单旁路耦合电弧焊与双熔化极旁路耦合电弧焊过程进行了仿真,仿真分析了焊枪夹角对旁路耦合电弧焊焊接过稳定性影响.结果表明,所建立的数学模型能很好的反映旁路耦合电弧焊接过程;当主路、旁路焊枪夹角为45°时,焊接过程达到稳定所需时间最短,与实际焊接过程中焊枪夹角基本一致,且单旁路耦合电弧焊比双熔化极旁路耦合电弧焊焊接过程更加稳定.
A dynamic mathematical model for welding arc was developed by adopting the method of equivalent current path according to the arc dynamic characteristics of DE-GMAW process and the rule of wire-melting.Based on that,simulations about non-consumable DE-GMAW and consumable DE-GMAW were carried out by MATLAB/Simulink.Then the influence of welding torches angle on stability of DE-GMAW process was simulated and analyzed.The results show that the developed mathematical model can reflect the DE-GMAW process well.When the angel between main and bypass torch is 45°,the response time for welding process to achieve stability is the shortest and is consistent with the actual welding process and the non-consumable DE-GMAW is much more stable than consumable DE-GMAW.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2012年第6期63-67,116,共5页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51165023)
