MIG Questions and Answers Already
Passed
What is the purpose of the drive rollers in a MIG welding machine?
Drive rollers feed the wire electrode smoothly through the gun to the weld puddle.
Why should you regularly check the liner in the MIG welding gun?
A clean and intact liner ensures...
MIG Questions and Answers Already
Passed
What is the purpose of the drive rollers in a MIG welding machine?
✔✔Drive rollers feed the wire electrode smoothly through the gun to the weld puddle.
Why should you regularly check the liner in the MIG welding gun?
✔✔A clean and intact liner ensures the smooth feeding of the wire electrode, preventing
blockages or tangles.
What can cause porosity in a MIG weld?
✔✔Porosity can be caused by contamination, improper gas flow, or welding on a dirty surface.
How does incorrect torch angle affect the weld quality?
✔✔An incorrect torch angle can lead to uneven penetration, spatter, and poor bead appearance.
What should you do if the arc becomes erratic during welding?
✔✔Check for problems with the wire feed, gas flow, and electrode tip for obstructions or wear.
1
, Why is it important to use the correct filler metal for the base material in MIG welding?
✔✔Using the correct filler metal ensures proper fusion, mechanical strength, and prevents issues
like cracking or corrosion.
What could cause excessive spatter during MIG welding?
✔✔Excessive spatter can be caused by too high voltage, incorrect wire feed speed, or improper
technique.
How does the travel angle influence the appearance of a MIG weld?
✔✔The travel angle affects the bead shape, penetration, and whether the weld is properly fused
with the base metal.
What does MIG stand for in welding?
✔✔MIG stands for Metal Inert Gas.
What is the primary shielding gas used in MIG welding?
✔✔The primary shielding gas is typically argon or a mixture of argon and carbon dioxide.
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