Weld penetration and wire meltingspeed of AC PMIG welding not only have relationship with welding current but also with electrode negative ratio.
交流脉冲MIG焊其焊缝熔深及焊丝熔化速度不仅与焊接电流有关，而且与负极性比率有关。
2
When electrode negative ratio is zero, which is using MIG welding with DC ami welding wire being positive polarity, weld penetration is maximum , wire meltingspeed and deposition rate are minimum;