Also referred to as “MIG” (metal inert gas) welding, GMAW creates an arc with a solid wire fed through a MIG gun and melted to form a weld. This video guides students through the basics of gas metal arc welding, which is often used in automotive, structural, and production manufacturing. Helping students identify the correct duty cycle for the job at hand, the video explains the function and specifications of the electrode or “filler wire” as well as the other GMAW tool components. Safety, transfer modes, general setup procedures, laying and reading beads, and other topics are featured. A troubleshooting segment helps deal with problems like an erratic puddle, excessive spatter, porosity, poor penetration, and excessive penetration, with advanced GMAW techniques also explored.
Gas metal arc welding (GMAW) [Video file]. (2012). In Films On Demand. Retrieved December 15, 2014, from http://digital.films.com/PortalPlaylists.aspx?aid=26021&xtid=43940