Investigate Effect of MIG Welding Process Parameters on Penetration using Taguchi Design

Abstract

Welding is a process for joining metals using a large variety of applications. Welding is the joining of metals at a molecular level. A weld is a homogeneous bond between two or more pieces of metal. The metals are heated to their melting point while being shielded from the air, and then a filler metal is added to the heated area to produce a single piece of metal. It can be performed with or without filler metal and with or without pressure. Several types of welding that are used today. The MIG welding parameters are the most important factors affecting the quality, productivity and cost of welding. These welding parameters are welding current, welding voltage, Gas flow rate, wire feed rate, etc. they influence penetration, and weld strength etc. during welding. The weld penetration were measured for each specimen after the welding operation is done on joined work piece. The analysis from DOE method can give the significance of the parameters which effect penetration. A plan of experiments based on Taguchi design will be used to acquire the data. The result computed will be in form of contribution from each parameter, through which optimal parameters will be identified for penetration.