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Frequently, MIG/MAG welding is also named CO2 welding, and the abbreviations MIG and MAG mean Metal Inert Gas and Metal Active Gas, respectively.
MIG/MAG welding is always performed with addition of wire as the welding arc is formed between the wire and the material. The wire is melted down into the material, and the molten bath is formed by continuous and stable feeding of the wire.
In the event of MAG welding, the gases constitute a chemically active part of the welding process, whereas, in the event of MIG welding, the inactive gasses protect against the surrounding atmosphere. MIG welding and MAG welding are the most frequently used welding methods both as regards manual welding and robot welding, and MIG/MAG welding can be used for both stainless steel, steel and aluminium.
It is advantageous to use MAG welding for thick steel materials, whereas the term MIG is used for welding thick stainless and aluminium materials, typically >=2 mm.
MIG/MAG welding is a failsafe welding method, and materials and wire need not be of the same material. The shaping of workpieces does not require the same accuracy as is the case with e.g. TIG.
MIG/MAG welding is the most versatile welding method as regards material quality and thickness, and therefore it is optimal for thicker materials of typically 3 mm or more.
GBI (Gl. Bedsted industri A/S) offers MIG/MAG welding in all materials both manually and in welding robot. As something quite special, we can perform robot MIG welding in aluminium with a quite outstanding quality which often does not require any finish-machining.
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