MIG welding process principlesMIG welding is the use of solid wire, in an inert gas (Ar) under the protection of an electric arc welding method take appropriate welding parameters for semi-automatic welding for aluminum bus production,Nickel Electrodes in order to ensure the quality of welding process, to overcome the aluminum prone to poor fusion welding, porosity and other defects, is a better welding aluminum and aluminum alloy welding method.