Study of Process Parameters in Synergic MIG Welding a Review

Welding is defined as one of the most efficient manufacturing and fabrication processes which exist in the category of formation of permanent metal to metal joints used widely in industries and production applications. The basic difference between conventional MIG welding and synergic MIG welding is that in synergic MIG welding, each pulse is responsible for the detachment of unit liquid metal into the puddle. Synergic MIG welding is in category of pulse-type MIG welding. A synergic MIG welding setup is designed to be a spatter less welding process that will consume lower-power heat consumption than spray or globular processes. An arc formation occurs between wire metal electrode and workpiece resulting the melting of metals at higher temperature. Combination of these melts mix together to form a single piece. Input parameters such as welding speed (v), welding voltage (V) and gas flow rate (gfr) are the important factors which directly affect the response parameters like microstructure, micro-hardness, tensile and yield strength and weld bead geometry of welded specimen. Present research aims to study various effects of input process parameters to response parameters and optimize them using Taguchi analysis of design of experiment (DOE) approach.