MIG and TIG Welding Test Questions and Answers Rated A+
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Module
MIG and TIG Welding
Institution
MIG And TIG Welding
MIG and TIG Welding Test Questions
and Answers Rated A+
How does the diameter of the tungsten electrode affect the welding process?
Larger diameter tungsten allows for higher amperage and deeper penetration, while smaller
diameters are better for thinner materials.
What is the significan...
MIG and TIG Welding Test Questions
and Answers Rated A+
How does the diameter of the tungsten electrode affect the welding process?
✔✔Larger diameter tungsten allows for higher amperage and deeper penetration, while smaller
diameters are better for thinner materials.
What is the significance of cleaning the base metal before welding?
✔✔Cleaning removes contaminants such as rust, oil, and dirt, which can lead to weak welds or
defects.
What is a common indication of poor gas coverage in MIG welding?
✔✔Porosity in the weld bead often indicates poor gas coverage or contamination during the
welding process.
How can you prevent burn-through when welding thin materials?
✔✔Use lower amperage settings, increase travel speed, and maintain a steady hand to minimize
heat input.
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, What is the advantage of using solid wire in MIG welding?
✔✔Solid wire allows for a smoother arc and is typically easier to handle compared to flux-cored
wire.
What are the benefits of using pulse TIG welding?
✔✔Pulse TIG welding helps control heat input, reduces distortion, and allows for better control
over the weld pool.
How do you adjust the gas flow rate for MIG welding?
✔✔The gas flow rate should be set according to the size of the nozzle and type of material being
welded, typically between 10 to 25 cubic feet per hour.
What should you do if you encounter a welding arc that goes out?
✔✔Check for issues with the wire feed, gas flow, or equipment settings, and ensure proper
contact between the electrode and workpiece.
What is the importance of electrode angle in TIG welding?
✔✔The electrode angle influences arc stability and penetration, with a generally recommended
angle of about 15 degrees.
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