Welding 1 - MIG Welding Questions and Answers Graded A+
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Module
Welding 1 - MIG Welding
Institution
Welding 1 - MIG Welding
Welding 1 - MIG Welding Questions and
Answers Graded A+
What is the role of the contact tip in a MIG welding gun?
The contact tip conducts electrical current to the welding wire and allows for the transfer of
the arc.
How can you prevent spatter during MIG welding?
Adjusting the voltage...
Welding 1 - MIG Welding Questions and
Answers Graded A+
What is the role of the contact tip in a MIG welding gun?
✔✔The contact tip conducts electrical current to the welding wire and allows for the transfer of
the arc.
How can you prevent spatter during MIG welding?
✔✔Adjusting the voltage and travel speed can help reduce spatter, along with using appropriate
shielding gas.
What does "puddle control" mean in MIG welding?
✔✔Puddle control refers to managing the molten metal pool to achieve a strong and uniform
weld.
How does wire diameter influence MIG welding performance?
✔✔Larger diameter wire can carry more current, while smaller diameter wire is better for
thinner materials.
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, What is the function of the welding machine's settings?
✔✔Welding machine settings allow the welder to adjust voltage and wire feed speed according
to material thickness and type.
What are the advantages of using MIG welding for metal fabrication?
✔✔MIG welding offers high speed, versatility, and the ability to weld various metals with
minimal operator skill.
What is the importance of preheating the base metal?
✔✔Preheating can reduce the risk of cracking and improve weld quality, especially in thicker
materials.
How do you adjust the wire feed speed for different materials?
✔✔Wire feed speed should be increased for thicker materials and decreased for thinner materials
to achieve proper penetration.
What effect does humidity have on MIG welding?
✔✔High humidity can lead to moisture contamination in the shielding gas, affecting weld
quality and strength.
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