May 30, 2024  
2022-2023 College Catalog 
    
2022-2023 College Catalog [ARCHIVED CATALOG]

WLD 262 - Gas Tungsten Arc Welding

4 Credits, 6 Contact Hours
2 lecture periods 4 lab periods

Procedures and techniques in the Gas Tungsten Arc Welding (GTAW) process. Includes health, safety, and environmental practices; welding terminology, GTAW process and equipment, equipment operation and techniques. Also includes power source types and controls, welding currents and polarities, tungsten electrodes, shielding gases, mild steel welding, aluminum welding, stainless steel welding, and GTAW certification.

Prerequisite(s): WLD 110  
  button image Prior Learning and link to PLA webpage

Course Learning Outcomes
  1. Demonstrate all safety protocol.
  2. Demonstrate mild steel welding.
  3. Demonstrate aluminum welding.
  4. Demonstrate stainless steel welding.

Outline:
  1. Health, Safety, and Environmental Practices
    1. Eye Protection
    2. Protective clothing
    3. Equipment handling
    4. Safety features to GTAW process
    5. Occupational Safety and Health Administration (OSHA) regulations
  2. Welding Terminology
    1. Dictionary of welding terms
    2. Applications
  3. GTAW Process and Equipment
    1. Process of operation
    2. GTAW parameters and variables
    3. Power sources
    4. Types of foot pedals
    5. Welding torches
    6. Gas regulators
  4. Equipment Operation and Techniques
    1. Assembly of the GTAW equipment
    2. Starting the arc
    3. Torch angles
    4. Oscillating the torch
    5. Adding the filler rod
    6. Speed of travel
  5. Power Source Types and Controls
    1. Types of power sources
    2. Manual power source controls on panel
    3. Polarity control
    4. Amperage control
  6. Welding Currents and Polarities
    1. Types of welding currents and their uses
    2. Types of polarities in the current and their uses
  7. Tungsten Electrodes
    1. Types and sizes of tungsten electrodes used in welding projects
    2. Care of the tungsten electrode
  8. Shielding Gases
    1. Types of shielding gases used in different types of basemetal welding
    2. Characteristics of the shielding gases
  9. Mild Steel Welding
    1. Basemetal preparations
    2. Welding procedures and techniques
    3. Flat, vertical, and horizontal positions
  10. Aluminum Welding
    1. Basemetal preparations
    2. Welding procedures and techniques
    3. Flat, vertical, and horizontal positions
  11. Stainless Steel Welding
    1. Basemetal preparations
    2. Welding procedures and techniques
    3. Flat, vertical, and horizontal positions
  12. GTAW Certification
    1. Types of GTAW certifications
    2. GTAW codes and specifications