Neutral atmosphere is maintained in a/an ____________ furnace?
Correct answer: A. Cold rolled steel coil annealing
- A. Cold rolled steel coil annealing
- B. Open hearth
- C. Soaking pit
- D. Walking beam reheating
Explanation
Cold-rolled steel coils are annealed in a controlled neutral atmosphere to prevent oxidation and preserve the required surface finish. Open-hearth, soaking-pit, and walking-beam furnaces commonly operate with combustion gases rather than a strictly neutral annealing atmosphere.
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