Title: Demonstrate GMAW operations, following all safety requirements, industry recommended practices, and instructor guidelines.
Course: Agricultural Fabrication and Emerging Technologies (18404) > Section: Performing Gas Metal Arc Welding (GMAW) Operations

Demonstration should include

- selecting the correct shielding gas to get the best result from your filler metal
- ensuring the work-piece is as clean as possible
- setting the power source according to the manufacturer’s instructions for wire polarity
- following wire electrode specifications to set the proper wire feed speed (amperage) and voltage
- aligning the proper electrode stick-out with the wire diameter being used
- positioning the wire electrode properly over the weld joint for maximum coverage based on the type of weld joint
- manipulating the welding gun effectively based on the type of weld joint
- controlling travel speed

and may include

- stringer bead welding
- groove welding
- fillet welding
- out-of-position welding.

Process/Skill Questions:

- How do you select the appropriate wire and burn angle when performing GMAW operations?
- How does the wire feed speed affect your weld?
- What is the difference between pushing and pulling the spool gun?
- Should you push or pull the weld? Why?
- What are the characteristics of a proper weld?
- What corrections can be made if the weld is of poor quality?
- How should a proper weld sound?