Optimization of Gas Metal Arc Welding Parameters for Maximizing Tensile Strength and Hardness of AISI304 Steel Joints Using Response Surface Methodology (RSM)

This research article is focused on Gas Metal Arc (GMA) Welding which is also known as Metal Inert Gas (MIG) welding of AISI304 of 5mm thickness. In this research article basic aim is to discover how welding parameters like arc voltage, gas flow rate, and welding speed affect the mechanical quality of weldment i.e. tensile strength and hardness. The highest tensile strength recorded is 470 N/mm2 at 20V and hardness is 196 at 24V. The strength and quality of the welds can be greatly increased by choosing the right welding parameters. In this study, Response Surface Methodology (RSM) was used to create a model that shows the connection between the welding process variable settings and the weld strength. The most significant factors for weld quality were determined using ANOVA tests, and the findings were verified at a 95% confidence level. Strong and dependable welds are crucial in the manufacturing, automotive, and construction sectors, so this research is beneficial. Future research on welding and advancements in the process will also benefit from the data gathered. The results showed that arc voltage had a considerable impact on ultimate tensile strength and hardness, and there was good agreement between the observed and anticipated values.