COOLING DEVICE WITH BREADTH-DEPENDENT COOLING ACTION

摘要

FIELD: rolling production.;SUBSTANCE: invention relates to rolling production. Flat rolled article (2) passes through cooling device (1) in transportation direction (x) at the level of pass-line (3). Spray beams (5, 6) extend transversely with respect to transportation direction (x). Spray beams (5, 6) have, as viewed perpendicular to transportation direction (x), in each case two outer regions (7, 8) and central region (9) in between. Liquid cooling medium (13) can be fed into regions (7, 8, 9) via a respective dedicated, individually controllable valve device (10, 11, 12). Central flow rate profile (V1), pertaining to central region (9), of liquid cooling medium (13) has a maximum in the centre and decreases toward the edge as viewed perpendicular to transportation direction (x), such that the central flow rate profile (V1) defines a central triangle, of which one side runs perpendicular to transportation direction (x) and the two other sides are of equal length. Outer flow rate profiles (V2, V3), pertaining to outer regions (7, 8), of liquid cooling medium (13) have a maximum at the edges and decrease toward the centre, such that outer flow rate profiles (V2, V3) each define an outer triangle, of which in each case one side runs parallel and perpendicular to transportation direction (x). Central triangle and the two outer triangles combine to form a rectangle.;EFFECT: invention enables to eliminate a temperature wedge in flat rolled products.;11 cl, 10 dwg