28 Week 1 Lab
Use a mixture of 75% argon and 25% carbon dioxide gas when welding with steel for these labs.
Stringer Beads All Positions GMAW
Setup
Materials required are a single 3/16″ to 3/8″ thick steel plate measuring 3″ by 6″.
Positions required are 1G, 2G, 3G, and 4G.
Work
Weld 2 layers of surfacing beads on the plate. Each pair of layers should be completed in a different position.
Acceptance Criteria
- Consistent weld
- Good tie-ins
- No undercut
- Complete penetration
- Half overlap over previous weld bead