Is a common high deposition rate process that involves feeding a wire continuously towards the heated weld tip.  It is considered a semi- automatic welding process.  It is one of the most popular forms of welding in industrial applications and is an easy process to integrate to a robot system.

Metal Inert Gas (MIG) Welding

A welding process that uses the heat generated by a Direct Current 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.