Analysis of mean and RMS current welding in the pulsed TIG welding process

Welding tests were conducted with the pulsed TIG process in order to investigate the RMS and mean welding current effect. Different conditions of the pulsation (pulse amplitude) were employed at the same mean or RMS welding current. The geometric aspects of the weld beads obtained, such as their width and penetration, and the welded area were analyzed. It was found that the weld penetration behavior is closely related with mean welding current, while the weld width with the RMS value of the welding current.