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MIG Welding and MIG Welders

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Airgas is the United States' largest distributor of industrial, medical, and specialty gases and related equipment, safety supplies, welding supplies and MRO products and services to industrial and commercial markets.

What Are MIG Welders and MIG Welding?

An arc welding process which joins metals by heating them with an arc. The arc is between a continuously fed filler metal (consumable) electrode and the workpiece. Externally supplied gas or gas mixtures provide shielding. Common MIG welding is also referred to as short circuit transfer. Metal is deposited only when the wire actually touches the work. No metal is transferred across the arc. Another method of MIG welding, spray transfer moves a stream of tiny molten droplets across the arc from the electrode to the weld puddle. Consumables: contact tips, shielding gas, welding wire.

MIG welding, also called GMAW, extrudes a metal wire electrode from a gun held by the welder. Power is applied to the gun by a power supply that attempts to regulate voltage at a preset level set by the welding operator. The gun also carries a shielding gas to the nozzle of the gun. A trigger on the gun turns on the gas via a solenoid in the power supply and engages the contactor, also in the power supply. Current flows down the gun through the arc and back to the power supply via the ground clamp. This process has become very popular in the last 40 years because of its speed and ease of use.

Contact a Welding Specialist: process.specialist@airgas.com

MIG Welding and MIG Welders Product Categories

  • MIG Welders
  • MIG Guns - Hand Held
  • MIG Guns - Fume Extraction
  • MIG Gun Parts
  • MIG Gun Consumables

MIG Welders and MIG Welding Manufacturers

  • Miller Welders
  • Lincoln Welders

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