An Approach to Optimize Mig Welding Parameters by Using Design of Experiments

The Metal arc Welding (MIG) process finds wide application because all commercially important applicable metals such as carbon steel, high-strength, low-alloy steel, and stainless steel, aluminum, copper, titanium, and nickel alloys can be welded in all positions with this process by choosing the appropriate shielding gas, electrode, and welding variables.In this work, the five control factors such as wire feed rate, arc voltage, welding speed, nozzle to plate distance and gas flow rate are considered.The welding parameters such as bead width, dilution and depth of HAZ have been considered.By using DOE method, the weld parameters were optimized. Analysis is done using ANOVA to determine the significance of parameters.Finally the confirmation test is carried out to compare the predicated values with the experimental values confirm its effectiveness in the analysis of bead width, dilution and depth of HAZ.