弧焊逆变电源动态性能的提高及其对短路过渡焊接过程的影响

Improvement of Inverter's Dynamic Properties and Its Influenceon Short-circuiting Arc Welding

采用可饱和输出电感大幅度提高了弧焊逆变电源的动态性能。在此基础上，研究了电源动态特性对ＣＯ２短路过渡焊接过程的影响规律。研究结果表明，增大短路后期电流的下降速度可以有效地减小焊接飞溅，而提高短路中期电流上升速度则有利于短路过渡焊接过程的规则性与稳定性。

By adopting saturable inductor, an inverter-based arc welding power source with very good dynamic properties has been developed. Using the power source, the influence of dynamics properties on short-circuiting arc welding is evaluated in this paper, the results indicate that increasing the current falling speed at the later period of short-circuit will help to get fewer spatter, and increasing the current rising speed at the mid-period of the short-circuit will make the welding process more stability and regularity.