METHOD OF COOLING OF RAILS OF HOT-ROLLED STRIP WITH SIMULTANEOUS THERMAL TREATMENT OF EXTERNAL COILS AND FACILITY FOR ITS REALISATION Russian patent published in 2010 - IPC C21D9/52 C21D9/573 

FIELD: metallurgy.

SUBSTANCE: it is implemented cooling of rails in heat-isolated volume, during the process of cooling is isolated by unequal heat currents through bottom and top parts of heat-insulated volume so that heat current through top part, as minimum two times but not more than 5 times more intensive than through bottom. Device implementing cooling method of rolls of hot-rolled strip with simultaneous thermal treatment of external coils, includes stand for installation of rolls and het insulating casing, consisting of bottom and top part, height of which is less than 30% of total height of casing wall, and its coefficient of heat conduction allows value not low than 1.0 Wt/m·K, herewith thermal-conductivity coefficient of bottom part of wall of casing shouldn't be higher than 0.17 Wt/m°K.

EFFECT: improving of cooled in roll metal ensured by thermal treatment of its external coils without increasing of duration of its cooling cycle.

2 cl, 1 dwg, 1 tbl