WELD 201 - Gas Tungsten Arc Welding

Credits: 1-3
LEC hours per week: 3
This course examines Welding theory in detail as it relates to Gas Tungsten Arc Welding (GTAW) with both direct and alternating currents on ferrous and nonferrous material. It also includes base metal identification, filler electrode selection, basic machine maintenance. Safety standards for all processes are covered.
Corequisite(s): Student is required to enroll in WELD 201, WELD 211, and WELD 221.
Course Outcomes:

Define proper set-up, safe operation, and maintenance of Gas Tungsten Arc Welding (GTAW) machines.
Explain proper shielding gas flow rate, coverage, and best practices for optimal operation.
Identify the settings on GTAW machines and their effects on the weld.
Illustrate and classify the positions for GTAW welding.
Analyze specific aspects for welding of:
- mild steel groove and fillet;
- stainless steel using fillet and groove;
- stainless steel using groove welds with back purging;
- aluminum groove and fillet;
- various common ferrous and nonferrous metals.
  - Apply inspection checklists and techniques to evaluate welds.

Course Topics:

Introduction to Gas Tungsten Arc Welding (GTAW): uses, advantages, and considerations.
Power source and current types and selection, including alternating current frequencies and balance.
Filler metal options and selection.
Base material types and selection.
Tungsten types and selection.
Argon gas flow adjustment and safety parameters.
Safety standards for GTAW