Effect of GTAW on the Mechanical Properties of Mild Steel

Tungsten metal arc welding (GTAW) is a highly popular technique in manufacturing. The factors such as current, voltage, speed, and gas flow rate play significant role determining the quality. This study discusses effect of GTAW on mechanical properties commercial steel welding. Base thickness, current are to be optimised for maximum tensile strength hardness by Taguchi design (TD). analysis showed that higher has hardness. increased obtained at base speed lower current. In addition, been shown obtain hardness—the demonstrated exposed heat input caused internal stresses. thickness due sample cross-section area phenomenon sink minimised and, thus, made 10 mm affected results most means, followed samples fabricated 150 A, while variation did not have much difference results. To strength, it recommended go more faster when mild GTAW.