Arizona Driving Permit Written Practice Exam

What is the purpose of the flux coating on a SMAW (stick) welding electrode?

To make the electrode look shiny To provide a shielding gas and form a protective slag over the weld To increase the cooling rate of the weld To prevent the welder from being shocked

Correct Answer:

To provide a shielding gas and form a protective slag over the weld

Explanation:

Flux melts to create shielding gas and slag, protecting the molten weld pool from atmospheric contamination.

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