May 28, 2024  
2022-2023 College Catalog 
2022-2023 College Catalog [ARCHIVED CATALOG]

WLD 261 - Gas Metal Arc Welding

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

Procedures and techniques in Gas Metal Arc Welding (GMAW) and Flux Core Arc Welding (FCAW) processes. Includes health, safety, and environmental practices; welding terminology, GMAW and FCAW processes and equipment. Also includes equipment operation, welding techniques, power source and wire feed types and controls; welding currents and polarities; welding wires in GMAW and FCAW processes; shielding gases; and mild steel and aluminum welding.

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

  1. Health, Safety, and Environmental Practices
    1. Personal, body, and eye protection
    2. Protective clothing
    3. Equipment handling safety
    4. Safety features to GMAW and FCAW processes
    5. Occupational Safety and Health Administration (OSHA) regulation
  2. Welding Terminology
    1. Dictionary of welding terms
    2. GMAW and FCAW applications
  3. GMAW and FCAW Processes and Equipment
    1. Process of operations
    2. GMAW and FCAW parameters and variables
    3. Power sources
    4. Wire feeders
    5. Welding guns
    6. Shielding gases
    7. Gas regulators
    8. Welding wires
  4. Equipment Operation and Welding Techniques
    1. Assembly of the GMAW and FCAW equipment
    2. Starting the weld bead
    3. Metal Inert Gas (MIG) gun angles
    4. Oscillating the gun
    5. Travel speed
    6. Forehand and backhand techniques
  5. Power Source and Wire Feed Types and Controls
    1. Types of power sources
    2. Types of wire feeders
    3. Manual power source and wire feed controls
    4. Amperage control
    5. Voltage control
    6. Inductance control
    7. Slope control
    8. Polarity control
    9. Wire feed 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. Welding Wires in GMAW and FCAW Processes
    1. Types and sizes of welding wire used in GMAW and FCAW processes
    2. Care of the welding wire
    3. Selecting the correct welding wire
  8. Shielding Gases
    1. Types of shielding gases used for different types of basemetal welding
    2. Characteristics of the different types of shielding gases
  9. Mild Steel Welding
    1. Basemetal preparation and identification
    2. Welding procedures and position welding techniques
  10. Aluminum Welding
    1. Basemetal preparation and identification
    2. Welding procedures and position welding techniques