激光-GMAW复合焊接电弧热源形式对焊接过程参数及焊缝形状的影响

Effect of laser-GMAW compound welding arc heat source form on the welding process parameters and the weld shape

激光-脉冲GMAW复合焊接和激光-连续GMAW复合焊接两种热源形式在复合焊接中使用范围广,应用前景好。系统研究这两种热源形式和脉冲GMAW焊接以及连续GMAW焊接在焊接过程中的电参数变化特征及焊缝的形状尺寸。结果表明,激光-脉冲GMAW复合焊接中电参数平稳,焊接过程稳定,可有效地促进熔滴过渡,并且获得的焊缝尺寸较理想,熔深大、余高小,但激光功率3 000 W的复合焊接短路时电参数波动性增大。

Laser-pulse GMAW and laser-continuous GMAW welding possessed good application prospect and wide use, The changes of electric parameters and the weld shape size in the process of these two kinds of heat source form and pulse GMAW welding and continuous GMAW welding were systematically researched. The results showed that the electricity parameter was smooth and the welding process was stable that could enhance the transition of droplets and ideal weld dimension with big penetration and low excess weld metal could be obtained in the laser-pulse GMAW welding. The electricity parameter increased in volatility when the welding process was in short circuit of the laser power was 3 000 W.