Preparation should include
- storing, handling, and installing high-pressure gas cylinders
- determining the welder type, electrode, wire type, diameter, and gas to be used
- setting up welding equipment
- adjusting the welder for proper electrode stick-out, voltage, polarity, flow rate, and wire-feed speed required for the material being welded
- determining ground clamp positioning and attachment.
Process/Skill Questions:
- How is GMAW wire classified?
- Why is GMAW wire copper in color?
- What is the line pressure for gas shielding when welding steel?
- What resources are available to determine voltage and wire-feed speed?
- When you increase voltage, what else will need to be increased? Why?
- What is the proper gun angle to the metal when performing GMAW operations?
- What are common problems to look for if the wire does not feed properly?