Parametric Optimization of the GMAW Welding Process in Thin Thickness of Austenitic Stainless Steel by Taguchi Method

In the present work, an analysis of different welding parameters was carried out on stainless-steel thin thickness tubes by Gas Metal Arc Welding (GMAW) process. The influence three main parameters, voltage, movement angle, and current in quality welds, studied through a specifically designed experimental process based establishment levels values for each these parameters. Weld is evaluated using destructive testing (macrographic analysis). Specifically, width root penetration weld bead were measured; however, some samples have been disregarded due to defects outside permissible range or caused excessive melting base metals. Data are interpreted, discussed, analyzed Taguchi method ANOVA analysis. From variance, it possible identify most influential parameter, with contribution 43.55% 75.26% width, which should be considered designs automatic processes improve final welds.