What is MIG Welding? | FAQs | Praxair Distribution, Inc.

MIG Welding

MIG Welding is shorthand for Metal Inert Gas Welding. It is also known as GMAW or Gas Metal Arc Welding. MIG Welding is a welding process which uses an electric arc between a consumable wire electrode and the work pieces to heat the work pieces which causes them to fuse together. The welding gun feeds the welding wire (aka filler metal) which is surrounded by a shielding gas to protect the metal fusion from contaminants in air and create the precise desired chemical reaction.

Four (4) common methods of metal transfer are predominant in MIG Welding. They are:

  1. Globular Transfer
  2. Short-Circuit Transfer
  3. Spray Transfer
  4. Pulsed-Spray Transfer

The transfer method in use depends upon the voltage and wire feed speed settings on the MIG welding power supply. Each method has it's sweet spot depending upon type of metal being welded, thickness of metal and speed of transfer required.

Praxair Distribution, Inc. is expert at selecting the perfect shielding gas and wire combinations to maximize travel speeds while minimizing spatter and other imperfections.