Joining process created by the continuous supply of a metal electrode, which is melted in an electric arc protected by an inert gas. Beskrivning The process Before processing can begin, the planned joint surface has to be cleaned to prevent contamination during the welding process. This also makes the joint easier to secure. A spool  feeds a metal wire constantly, which also acts electrode. The workpiece and the electrode are connected to a power source, and this causes an electric arc. This creates a high amount of heat energy, which leads to the electrode and parts of the workpiece to be melted and finally create the desired weld joint. An external gas tank supplies the process with an inert gas , usually argon. The aims to create a protective atmosphere for both the arc and melt. In cases where a small weld is desired, and the accessibility exists, finishing in the form of grinding is applied. Synonyms Metal Inert Gas welding MIG welding Process films Product examples English translation unavailable for .