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Date: 05/18/00 at 11:20 PM
Posted by: Antonio Augusto Gorni
E-mail: agorni@iron.com.br

In Reply to: Furnace Holding Temperature posted by Elwood Powley on 05/18/00 at 11:11 PM:

Elwood:

It's difficult to choose such temperature. Of course one would like to use the lowest temperature in order to minimize slab oxidation and austenite grain growth. However, a very low holding temperature would require an extended time interval to reheat slabs to the normal temperature and resume operation at the mill. This can be even more critical if you are rolling Nb microalloyed steels, when you must have slabs soaked above carbonitride solution temperature (about 1150.C) before rolling.

All the best,

Antonio

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