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WHAT IS THE BEST SHIELDING GAS FOR MIG WELDING?MIG welding with shielding gas and a solid wire electrode produces a clean, slag-free weld without the need to continually stop welding to replace the electrode, as in stick welding. Increased productivity and reduced clean-up are just two of the benefits possible with this process. The primary purpose of shielding gas is to prevent exposure of the molten weld pool to oxygen, nitrogen, and hydrogen contained in the atmosphere. The re …

Understanding MIG/MAG Welding Process, Machines and Accessories.Metal Inert Gas (MIG) / Metal Active Gas (MAG) welding refers to a group of arc welding processes that use the heat generated by a DC electric arc to fuse the metal in the joint area. A continuous electrode (the wire) is fed by powered feed rolls (wire feeder) into the weld pool.An electric arc is created between the tip of the wire and the weld pool. The wire is progressively melted at the same speed at which it is being fed and fo …