A Study on Optimization of CO2 Welding Process Parameters on Structural Steel by Using Taguchi Method

The goal of this study is to improve several welding parameters that affect the mechanical properties of mild steel, including YS, UTS, toughness, and Vicker hardness (VHN). The welding parameters were optimized using the Taguchi technique, and fracture mode characterization was investigated. There have been numerous experiments done. Applying for it was the L9 orthogonal array (3xx3). To find out how different welding factors, including wire feed speed, welding current, and gas flow rate, affect mechanical qualities, statistical methods of signal to noise ratio (SNR) and analysis of variance (ANOVA) were used. To investigate the weld quality of MS, tensile strength, toughness, Vicker hardness (VHN), and mode of fracture were examined. It was noted from the results that the welding voltage has significant effect whereas gas flow rate has insignificant effect on tensile strength of the weldment, and the ideal process parameters were found to be 21 V, 330 IPM travel speed of wire, and 23 l/min gas flow rate.