Welding

Gas tungsten arc welding (GTAW), or TIG welding, is an arc welding process that uses a non-consumable tungsten electrode to create an arc and join metal. It requires shielding gas, mostly pure argon or argon mixed with helium.

Gas metal arc welding (“GMAW”) is an arc welding process that uses a consumable wire electrode and shielding gas, which a welding gun feeds to the joint.

An electrical arc between the wire and base metal generates heat that melts. Shielding gas protects the molten weld pool from harmful atmospheric gasses.

GMAW most commonly uses a constant voltage, direct current power source, but constant current systems and alternating current are usable.

This article explains the basics of the MIG welding process, when to apply it, the necessary equipment, GMAW career opportunities, and the pros and cons of MIG welding.

Shielded metal arc welding, also known as manual metal arc welding, flux shielded arc welding or informally as stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld.