Reheating Furnace is the heart of any hot rolling mill where in the charge is heated to rolling temperature. The charge could be in the form of billets, blooms, slabs or ingots.The type of furnace could be pusher, walking hearth or walking beam – either top fired or top and bottom fired.The fuel used could be either oil or gas. The burners are located in a manner so as to achieve uniform heat distribution. The radiation heat energy is efficiently transferred through the useful heat transfer area created by the charge bed.The furnace is basically divided into three zones namely preheating, heating and soaking zones. The actual heating takes place in the heating zone. The temperature uniformity up to desired limits between the core and the surface is achieved in the soaking zone. The flue gases move in a direction opposite to that of the charge thereby ensuring considerable amount of waste heat recovery by convection in the preheating zone, which is also termed as the recuperative zone.
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http://www.rollingmillmachinery.org/billet-reheating-furnace...

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Note added at 3 hrs (2017-07-06 14:24:58 GMT)
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выравнивания means "equalization" - maintenance of a uniform temperature. In English, this is achieved by "soaking" the element in the "soaking zone" of a furnace with heat to ensure a uniform distribution of temperature.

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Soaking zone maintain a constant temperature of slab at approximately 1150-1200 Celsius before the slab leave the reheating furnace.
http://www.wseas.us/e-library/conferences/2010/Japan/ICOSSSE...

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soaked in the soaking zone to retain the uniform temperature through the billets
http://www3.aiche.org/Proceedings/content/Annual-2013/extend...
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In soaking zone, homogeneity of temperature inside slabs is enhanced to meet the requirement of hot rolling step

https://pdfs.semanticscholar.org/5e6e/ebd5c4fe5eceae9712f3e8...