WLD 122: Gas Metal Arc Welding I

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Class Program
Welding
Credits 3 Lab Hours 66
Students will learn to apply the Gas Metal Arc Welding (MIG) process on steel in all positions using the short circuit transfer mode and the spray transfer mode in the flat and horizontal positions.

Prerequisites

WLD 112.
Quarters Offered
Fall,
Winter,
Spring,
Summer
Course Outcomes

Upon successful completion of the course, students should be able to demonstrate the following knowledge or skills:

  1. Set up and adjust Gas Metal Arc Welding equipment for safe use with the short circuit and spray transfer modes.
Course Content Outline
At the completion or the course, the student will demonstrate competence in:
  1. Perform safety inspection of equipment, work area and accessories
  2. Make minor repairs to equipment and accessories
  3. Set up a Gas Metal Arc Welding station for Short Arc transfer on plain carbon steel
  4. Flat Position Short Arc: Make several stringer beads on carbon steel passing visual inspection
  5. Flat Position Short Arc Make a pad of welds with 8-12 beads passing visual inspection
  6. Flat Position Short Arc: Make lap weld on ¼ “carbon steel passing visual inspection, size inspection and break test
  7. Flat Position Short Arc: Make a 1F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  8. Flat Position Short Arc:: Make a 1F ½” multi-pass fillet weld passing visual and size inspection
  9. Flat Position Short Arc: Weld a 1G plate qualification test with backing. Passing visual inspection and bend test.
  10. Horizontal Position Short Arc: Make several stringer beads on carbon steel passing visual inspection
  11. Horizontal Position Short Arc Make a pad of welds with 8-12 beads passing visual inspection
  12. Horizontal Position Short Arc: Make ¼ ” lap weld on carbon steel passing visual inspection, size inspection and break test
  13. Horizontal Position Short Arc: Make 2F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  14. Horizontal Position Short Arc:: Make 2F ½” multi-pass fillet passing visual and size inspection
  15. Horizontal Position Short Arc: Weld a 3/8” 2G plate qualification test with backing. Passing visual inspection and bend test.
  16. Vertical-Up Position Short Arc: Make several stringer beads on carbon steel passing visual inspection
  17. Vertical-Up Position Short Arc Make a pad of welds with 8-12 beads passing visual inspection
  18. Vertical Up Position Short Arc: Make ¼ ”lap weld on carbon steel passing visual inspection, size inspection and break test
  19. Vertical Up Position Short Arc: Make a 3F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  20. Vertical Up Position Short Arc:: Make a 3F ½” multi-pass fillet passing visual and size inspection
  21. Vertical Up Position Short Arc: Weld a 3G plate qualification test with backing. Passing visual inspection and bend test.
  22. Overhead Position Short Arc: Make several stringer beads on carbon steel passing visual inspection
  23. Overhead Position Short Arc Make a pad of welds with 8-12 beads passing visual inspection
  24. Overhead Position Short Arc: Make ¼ ”lap weld on carbon steel passing visual inspection, size inspection and break test
  25. Overhead Position Short Arc: Make a 4F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  26. Overhead Position Short Arc:: Make a 4F six pass ½” multi-pass fillet passing visual and size inspection
  27. Overhead Position Short Arc: Weld a 3/8” 4G plate qualification test with backing. Passing visual inspection and bend test.
  28. Set up a Gas Metal Arc Welding station for Spray Arc transfer on plain carbon steel
  29. Flat Position Spray Arc: Make several stringer beads on carbon steel passing visual inspection
  30. Flat Position Spray Arc Make a pad of welds with 8-12 beads passing visual inspection
  31. Flat Position Spray Arc: Make ¼ ”lap weld on carbon steel passing visual inspection, size inspection and break test
  32. Flat Position Spray Arc: Make 1F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  33. Flat Position Spray Arc: Make a 1F ½” multi-pass fillet passing visual and size inspection
  34. Flat Position Spray Arc: Weld a 1G plate qualification test with backing. Passing visual inspection and bend test.
  35. Horizontal Position Spray Arc: Make several stringer beads on carbon steel passing visual inspection
  36. Horizontal Position Spray Arc Make a pad of welds with 8-12 beads passing visual inspection
  37. Horizontal Position Spray Arc: Make ¼ ”lap weld on carbon steel passing visual inspection, size inspection and break test
  38. Horizontal Position Spray Arc: Make a 2F single pass ¼” fillet weld passing visual inspection and passing the fillet break test.
  39. Horizontal Position Spray Arc: Make a 2F ½” multi-pass fillet passing visual and size inspection
  40. Horizontal Position Spray Arc: Weld a 3/8” 2G plate qualification test with backing. Passing visual inspection and bend test.
Department Guidelines

Grades will be calculated as follows:
50% Based on completing all course competencies.
50% Based on Lab Participation, Cleanup on a daily basis, and following ALL Safety rules.
The grade awarded for the class is as follows:

95-100 4.0
94 3.9
93 3.8
92 3.7
91 3.6
90 3.5
89 3.4
88 3.3
87 3.2
86 3.1
85 3.0
84 2.9
83 2.8
82 2.7
81 5.6
80 2.5
79 2.4
78 2.3
77 2.2
76 2.1
75 2.0
74 1.9
73 1.8
72 1.7
71 1.6
70 1.5
69 1.4
68 1.3
67 1.2
66 1.1
65 1.0
60-64 0.7
0-59 0