Effect of angle, distance between electrodes and TIG current on the weld bead geometry in TIG-MIG/MAG welding process

Appropriate control of the weld pool is essential to obtain weld beads in accordance with project specifications. In this context, the TIG-MIG/MAG welding process has appeared as a viable alternative, mainly due to the greater independence between the deposited material and the heat transferred to the plate. Therefore, this study aims to evaluate the influence of input variables in TIG-MIG/MAG welding process on the weld bead geometry. Welds were made varying the TIG current, the TIG torch angle, the MIG/MAG torch angle, and the distance between the electrodes. It was found that it is possible to act upon the geometry of the weld bead varying the parameters evaluated. A larger fusion zone area and penetration are achieved by TIG current TIG torch angle and MIG/MAG torch angle in maximum and the distance between the electrodes in minimum values. Greater bead width is obtained by using the TIG current and MIG/MAG torch angle in the minimum value and distance between electrodes and the TIG torch angle in the maximum values. The highest reinforcement is obtained when using the TIG current, TIG torch angle, and MIG/MAG torch angle in maximum values and the distance between electrodes at the minimum value.

Automated summary

This study evaluates the influence of input variables on weld bead geometry in the TIG-MIG/MAG welding process. It was found that by varying parameters, such as TIG current, TIG torch angle, MIG/MAG torch angle, and electrode distance, one can achieve larger fusion zone area, greater penetration, wider bead width, and higher bead reinforcement.