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Aluminum alloy Al 6061 alloy has a good combination of mechanical properties. It has wide applications in the aerospace and marine industries. However, welded part of the alloy differs in properties which intern depends on welding input parameters. The proper selection of welding parameters plays an important significance in improvement in weld bead geometry. This present research focused on the study of welding parameters of MIG welding of alloy Al 6061 by Taguchi’s GR analysis using L32 orthogonal array. The angle of torch, Wire feed rate, Standoff distance, Welding speed, and Welding current are different parameters considered for analysis. AN0VA method was used to obtain the importance of each parameter on the weld bead. From ANOVA it was found that welding current plays a significant role and followed by wire feed rate, welding speed, angle of torch, and least influenced by standoff distance.

Optimization of MIG welding process parameters with grey relational analysis for AL 6061 alloy