Cert III Welding Practice Questions - Certificate III In Engineering - Fabrication Trade Welding (MEM30319) Exam

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In GMAW (MIG) welding of carbon steel, which shielding gas or mixture is most commonly used for general fabrication to give good penetration with reduced spatter?

Pure argon An argon–CO2 mixture (e.g. 80/20) Pure oxygen Pure helium

Correct Answer:

An argon–CO2 mixture (e.g. 80/20)

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