General Studies · Welding Technology
Slag inclusion is a welding defect primarily caused by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1incorrect edge penetration and excessive current settings
- 2contamination of either the filler or parent metals by atmospheric air
- 3insufficient cleaning and preparation of the base metal between passes✓
- 4gas being trapped in the weld pool due to moisture
Correct answer
insufficient cleaning and preparation of the base metal between passes
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