Influence of GMAW-P Pulse Parameters on Welding Process and Weld Size

The influences of pulse current, pulse time, pulse frequency and other parameters on the weld formation and the stability of welding process were analyzed by using there-factor and three-level orthogonal test, combined with high-speed photography, welding electrical parameter acquisition, metallographic detection and other means. The results showed that among the three pulse parameters, the pulse frequency had a great effect on the penetration and welding stability, while the pulse current had a great effect on the weld width.