ABSTRACT Gas Metal Arc Welding is a process in which the source of heat is an arc format between
consumable metal electrode and the work piece with an externally supplied gaseous shield of gas
either inert such as argon, helium. This experimental study aims at optimizing various Gas Metal
Arc welding parameters including welding voltage, welding current, welding speed and nozzle to
plate distance (NPD) by developing a mathematical model for sound weld deposit area of a mild
steel specimen. Factorial design approach has been applied for finding the relationship between
the various process parameters and weld deposit area. The study revealed that the welding
voltage and NPD varies directly with weld deposit area and inverse relationship is found
between welding current and speed with weld deposit area.
Cite this paper
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