COOLING METHOD OF STEEL PLATE

摘要

PURPOSE:To prevent scattering of cooling water by averting the interference between the nozzles of an upper cooling header and the end edge of a shielding member and correcting automatically the position thereof when the interference arises. CONSTITUTION:The top surface of a high-temp. thick steel plate 21 made by hot rolling is cooled by the cooling water flow from the nozzles on the side above the steel plate and the bottom surface thereof is cooled by the cooling water flow from the side below the plate 21. The cooling water flow to the top surface at each end is blocked by the shielding member 26 to execute controlled cooling so that the temp. is uniformly distributed in the transverse direction of the plate 21 after cooling. However, the respective inside ends 26A of the member 26 may interfere with the cooling water flow from the upper nozzles at the transverse size B of the steel plate with respect to the draining rate X at the end of the steel plate. The set value of the position of the member 26 is thereupon corrected.