Parametric Optimization of Gas Tungsten Arc Welding Processes by Using Factorial Design Approach

摘要

The experimental study aims to optimize welding parameters in the Gas Tungsten Arc welding of an Inconel 825 alloy. The welding parameters selected for our experimental investigation are welding voltage (V),welding current (I), gas flow rate (GFR), nozzle to plate distance (NPD) and torch angle (θ) and weld deposit area is optimized for the above parameters. A mathematical model is developed by Factorial design approach to find out the relationship between the various process parameters and weld deposit area. The significance of the model was analyzed by the ANOVA. The mathematical model indicated that the increase in welding current, gas flow rate, and torch angle increases weld deposit area and increase in voltage and Nozzle to Plate Distance decreases the Weld Deposited Area.