SA Welder Trade Test Practice Questions - South Africa Artisan Trade Test - Welder (QCTO NAMB) Exam

In Shielded Metal Arc Welding (SMAW), what is the primary function of the flux coating on a stick electrode?

To increase the electrode's electrical resistance so it melts faster To shield the molten weld pool from atmospheric oxygen and nitrogen by forming gas and slag To act purely as a handle insulation for the welder To add copper to the weld deposit for corrosion resistance

Correct Answer:

To shield the molten weld pool from atmospheric oxygen and nitrogen by forming gas and slag

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