Welder Red Seal · Question
A welder observes hard, adherent dross on the top edge of a mild steel plate after oxy-fuel cutting. What adjustment is most likely needed to correct this?
Hard, adherent dross on the top edge typically indicates that the cutting speed is too high. A slower cutting speed allows sufficient time for the material to o
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Question: A welder observes hard, adherent dross on the top edge of a mild steel plate after oxy-fuel cutting. What adjustment is most likely needed to correct this?
Answer options:
- Increase the preheat flame intensity.
- Decrease the cutting oxygen pressure. ✅ Decrease the cutting speed.
- Increase the torch standoff distance.
Correct answer: Decrease the cutting speed.
Explanation: Hard, adherent dross on the top edge typically indicates that the cutting speed is too high. A slower cutting speed allows sufficient time for the material to oxidize and be cleanly expelled, reducing top edge dross.
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