General Studies · Arc Welding
What is the primary function of slag in shielded metal arc welding?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To accelerate the cooling rate of the weld
- 2To rapidly melt the base metal
- 3To protect the molten weld pool from atmospheric contamination✓
- 4To increase the electrical conductivity of the arc
Correct answer
To protect the molten weld pool from atmospheric contamination
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