Procedures for welding techniques of shipyard using metal inert gas

Abstract

The main objective of this research is to find a combination of large currents and welding speeds, to obtain optimal welding results with metal inert gas (MIG) technique. This research will conduct procedures of experimental observations of welding with variable current and speed on MIG (metal inert gas) welding, using currents ranging from 50 to 200 amperes, 1G welding position, with welding speeds ranging from very slow to very fast, it is expected to be obtained optimal welding results. Metal Inert Gas (MIG), first used in welding aluminum plates. Arc and welding wires use electrode wires that are protected by helium gas, argon gas and for carbon steel materials using CO² gas. MIG is an alternative to using the MMA method, offering high deposition rates and high productivity. MIG is widely used especially for welding high quality steels such as stainless steel, strong steel and non-steel metals which cannot be welded in other ways.