METHOD OF COOLING STRIP HOT ROLLING MILL WORKING ROLLS AND DEVICE TO THIS END

摘要

FIELD: process engineering.SUBSTANCE: invention relates to metallurgy and is intended for correction of roll barrel heat profile correction. Proposed method comprises feeding liquid coolant jets on roll barrel surface to form set of flows parallel with roll axis and controlling coolant flow rate in every flow. Note here that coolant flow rate in one part of flows is distributed symmetrically about roll barrel centre while in another part of flows it is distributed asymmetrically about roll barrel centre with smooth reduction of flow rate in these flows from maximum to minimum magnitude over barrel working section. Note also that in one part of asymmetric flows, flow rate is reduced in direction from left edge to right edge while in another part it is reduced in opposite direction. Proposed device comprises sets of manifolds each being composed of three manifolds with different-capacity atomisers arranged as required in manifolds.EFFECT: efficient and smooth correction of roll barrel active generatrix profile.9 cl, 2 dwg