This course introduces the fundamental concepts of inert gas welding with a metal inert gas (MIG) welder. Students will acquire foundational welding techniques applicable to various materials.
An additional fee is required.
Prerequisites
None
1. Inspect and set up GMAW equipment (power source, feeder, gun, gas delivery) and verify parameters (polarity, voltage, wire feed speed, gas flow) according to the work instruction/WPS and shop safety protocols.
2. Deposit sound surfacing beads (flat position) and produce fillet and groove welds in the required positions using short circuit and spray transfer, demonstrating stable arc, appropriate bead geometry, and fusion.
3. Weld plain carbon steel joints using GMAW S in flat, horizontal, vertical, and overhead positions to meet visual acceptance criteria (e.g., no unacceptable porosity, undercut, overlap; proper profile and fusion).
4. Weld aluminum fillet (horizontal/vertical) and groove (flat/vertical) joints using spray transfer, control heat input and distortion, and meet visual acceptance criteria consistent with AWS D1.2 style guidelines.
5. Weld 3XX stainless steel fillet joints (horizontal/vertical) using short circuit transfer, control heat tint/oxidation, and meet visual acceptance criteria.