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Glossary

The Kallanish Glossary aims to be a useful resource for complex industry specific terminology. We are constantly adding to our glossary, so if you have a suggestion or amendment please do get in touch.

Tunnel Furnace

Steel

These are long, horizontal, refractory-lined, heated rectangular enclosures which are used to maintain steel semis leaving the caster at rolling temperature as they are transferred to the rolling mill. Their function is to save energy and raise productivity by avoiding the usual cooling and subsequent reheating of semis prior to hot rolling. The furnace also acts as a buffer between caster and mill to assist rolling mill scheduling. As semis move slowly through the tunnel, conveyed by a series of rolls, their temperature is maintained by burners mounted at intervals along the sidewalls.

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