Application of a hybrid Taguchi grey approach for determining the optimal parameters on laser beam welding of dissimilar metals.

There has been a consistent increase in the utilization of laser sources, resulting in a decrease in expenses and an increase in efficiency. Several factors have contributed to this phenomenon, including advancements in procedures and machinery such as laser beam welding systems. Inconel 718 is a highly utilized material in the manufacturing of chemical, nuclear, and marine equipment. Conversely, SS304 is commonly used in the food processing, automotive, and aerospace industries. It is crucial to conduct a thorough investigation of the welding techniques employed for dissimilar metals, with particular emphasis on SS304 and Inconel 718. The current investigation employed the Taguchi design methodology. The amalgamations of LP at 2.7 kW, WS at 2.35 mm/min and PD at 6.5 ms accomplishes minimalized top and bottom width. Likewise, an amalgamation with 3.1 kW LP, 2.05 mm/min WS and 7.5 ms PD accomplishes maximized feasible penetration which consequences in quality joints. The research has revealed that the laser power is the primary process variable that significantly impacts the width of both the upper and lower sections. The velocity at which welding is performed is a crucial factor that influences the rate of penetration. The attainment of optimal penetration can be facilitated by the combination of elevated levels of peak power and pulse duration with reduced levels of weld speed. [ABSTRACT FROM AUTHOR]