Performance should include
- placing equipment in operation
- performing minor repairs
- selecting machine setting, electrodes, and shielding gas
- demonstrating
- fusion welds of aluminum, stainless steel, and carbon steel
- flat groove welds and horizontal fillet welds on aluminum, stainless steel, and carbon steel.
Process/Skill Questions:
- How is the end of the tungsten electrode prepared for welding non-ferrous metals?
- What is the major advantage of GTAW welding? What are the disadvantages?
- How is the risk of argon asphyxiation related to GTAW welding?
- Why is AC current used for welding aluminum?