Metal inert gas welding involves using a steel wire and an electric current to bind the wire to multiple pieces of metal. Inert gases used in the practice include carbon dioxide, argon and helium.
Training topics include fabrication and manufacturing, maintenance and repair, welding materials, characteristics of tools and materials, wire feeders, work clamps, component functions and voltage.
Online courses are typically self-directed and carried out through interactive components. Users receive text- and image-based instruction in a variety of topics and are then asked to complete an exercise based on the given information.