Basic welding technique

Time when current is applied to the workpiece.

• Weld time

• Squeeze time

• Hold time

• Off period

What is this?

• Nozzle
• Wire
• Contact Tip
• Liner

What is this?

• Nozzle
• Liner
• Contact Tip
• Wire

All of our MIG welders use what welding gas?

• 75% Carbon Dioxide / 25% Argon
• 100% Carbon Dioxide
• 100% Argon
• 75% Argon / 25% Carbon Dioxide

What does the MIG nozzle do?

• Funnels the gas away from the weld
• Funnels the gas over the weld
• Stabilizes the wire
• Helps feed the wire

If the welding gun is pulled away from the base metal. the current increases to compensate for the longer arc

• True
• False

To feed the electrode wire properly, the correct amount of pressure must be applied to the electrode wire by the drive and pressure rolls. 

• True
• false

When GMAW welding one should wear

• wool clothing and cotton gloves

• synthetic shorts
• a heavy coat
• tinted glasses

MIG welding produces harmful

• noise
• light rays
• heat
• gas

When starting to MIG weld, the operator should

• Set the ground clamp and turn on the Gas to 20 psi
• Clean area of scraps and tools
• Shield others from arc rays

• All of these