Performance should include
- placing equipment in operation
- performing minor repairs
- selecting machine setting, electrodes, and shielding gas
- demonstrating
- fillet and groove welds in flat, horizontal, and vertical positions, using GMAW-S
- fillet and groove welds in flat, horizontal, and vertical positions, using GMAW spray transfer.
Process/Skill Questions:
- What are the effects of the voltage setting being too low? Too high?
- What indicates that a liner needs replacing?
- What shielding gases may be used for the spray transfer method on carbon steel?