GMAW NC II Practice Questions - TESDA Gas Metal Arc Welding (GMAW) NC II Competency Assessment Exam

What is the primary purpose of shielding gas in GMAW pipe welding?

Protect the molten weld pool and arc from atmospheric oxygen and nitrogen Cool the weld bead rapidly to increase hardness Replace the need for a filler wire electrode Generate slag that floats on top of the weld

Correct Answer:

Protect the molten weld pool and arc from atmospheric oxygen and nitrogen

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