Welding Module 29209-15 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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Course
Welding Module 29209-15
Institution
Welding Module 29209-15
Welding Module 29209-15 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What does GMAW stand for?
Gas Metal Arc Welding.
What is the primary shielding gas used in GMAW for welding steel?
A mixture of argon and carbon dioxide.
Why is shielding gas important...
Welding Module 29209-15 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What does GMAW stand for?
✔✔ Gas Metal Arc Welding.
What is the primary shielding gas used in GMAW for welding steel?
✔✔ A mixture of argon and carbon dioxide.
Why is shielding gas important in GMAW?
✔✔ To protect the weld pool from atmospheric contamination.
What type of electrode is used in GMAW?
✔✔ A consumable, continuously fed wire electrode.
What is the purpose of a wire feeder in GMAW?
✔✔ To provide a constant supply of electrode wire to the weld.
1
, What type of power source is used in GMAW?
✔✔ A constant voltage power source.
What is the typical polarity used in GMAW?
✔✔ Direct Current Electrode Positive (DCEP).
Why is proper electrode stickout important in GMAW?
✔✔ It affects the arc stability, heat input, and weld quality.
What happens if the wire feed speed is too fast?
✔✔ The wire can pile up or cause excessive spatter.
What happens if the shielding gas flow rate is too low?
✔✔ The weld can become contaminated with porosity.
Why is travel speed important in GMAW?
✔✔ To ensure proper penetration and prevent defects like undercut or excess spatter.
2
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