31442323Basic Gas Metal Arc Welding (GMAW/MIG)
Course Information
Description
Students in the Basic Gas Metal Arc Welding class concentrate on developing solid manipulative skills and a theoretical understanding of the GMAW and FCAW processes. Manual skills will be developed welding a variety of weld joints made of mild steel in the flat and horizontal positions. Theoretical understanding of the GMAW and FCAW welding processes will be gained through lecture, discussions, and tests/quizzes. Weld competencies using the GMAW process will be performed using Short Circuit, Globular, Axial Spray, and Pulsed Spray Modes of Metal Transfer, as well as one competency using the Flux-Core Arc Welding (FCAW) process. All welding competencies will be evaluated using American Welding Society (AWS) D1.1 Structural Steel Welding Code visual inspection criteria.
Total Credits
2
Prior Learning Assessment
  • Experiential-Skill Demonstration
Course Competencies
  1. Work safely in a welding lab environment
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Demonstrate safety procedures
    Protect tools, equipment and manuals
    Maintain clean and organized work areas
    Demonstrate conservative use of shop supplies

  2. Operate hydraulic sheer and horizontal band saw
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Power up the hydraulic sheer
    Adjust digital back gage to correct dimension
    Sheer metal to correct size
    Power up the horizontal band saw
    Clamp material in the correct location
    Cut metal to correct size

  3. Perform flat and horizontal position stringer beads and square butt joint welds using the Short Circuit mode of metal transfer
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Set-up welding power source for short circuit transfer welding
    Fit and tack weld material
    Perform flat and horizontal position stringer beads
    Perform flat and horizontal position square butt welds
    Flat and horizontal position stringer beads and square butt welds conform to American Welding Society D1.1 visual inspection criteria

  4. Perform horizontal position filet welds on lap joints using the Short Circuit mode of metal transfer
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Set-up welding power source for short circuit transfer welding
    Fit and tack weld material
    Perform filet welds on lap joints on 10 gauge hot-rolled steel
    Horizontal position lap joint filet welds will conform to American Welding Society D1.1 visual inspection criteria

  5. Perform horizontal position filet welds on tee joints using the Pulsed Spray mode of metal transfer
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Set-up welding power source for Pulsed Spray (or Rapid Arc or Accu-Pulse) transfer welding
    Fit and tack weld material
    Perform filet welds on tee joints on 10 gauge hot-rolled steel
    Horizontal position tee joints conform to American Welding Society D1.1 visual inspection criteria

  6. Perform flat position stringer beads and square butt welds using the Flux Core Arc Welding process
    Assessment Strategies
    Skill demonstration in lab
    Criteria
    Set-up welding power source for Flux Core Arc Welding
    Fit and tack weld material
    Perform flat position stringer beads
    Perform flat position square butt welds
    Your flat and horizontal position stringer beads and square butt welds that conform to American Welding Society D1.1 and D1.3 visual inspection criteria