Effect of welding current on arc behavior in tandem GMAW
Effect of welding current on arc behavior in tandem GMAW
复制标题
焊接电流对串联 GMAW 电弧行为的影响
DOI：
10.1142/s0217979219400368
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Yuxin Wang
中科院分区：
文献类型：
--
作者：
Juan Pu;Shan Wu;Qingxian Hu;Yuxin Wang
基于电弧物理理论、动量方程、能量方程、连续方程和麦克斯韦方程，建立了串联气体金属弧焊双电弧的三维数值模型。研究了不同焊接电流对工件表面温度场、速度场和压力场的影响。结果表明：随着焊接电流的增大，工件表面的电弧温度最大值、电弧等离子体速度最大值和电弧压力最大值均增大；这些最大值出现在双线的尖端。随着焊接电流的增大，耦合电弧的电流密度和轴向偏转角增大。
A three-dimensional numerical model of double-arc in tandem gas metal arc welding(GMAW) was established based on the theory of arc physics, momentum equation,energy equation, continuous equation and Maxwell equations. The effects of different welding current on temperature field, velocity field and pressure field on the surface of workpieces were investigated. The results showed that the maximum values of arc temperature, arc plasma velocity and arc pressure on workpieces surface were increased with the increasing welding current. These maximum values occurred at the tip of double-wire. The current density and axial deflection angle of coupling arc were increased following the increasing welding current.