METHOD, DEVICE AND COMPUTER PROGRAM FOR CONTROLLING COOLING

摘要

PROBLEM TO BE SOLVED: To make high-accuracy dynamic control possible and to reduce effect on the manufacture of material.

SOLUTION: A device 100 for controlling cooling controls a cooling system 4 for cooling a steel sheet 1 with the quantity of cooling water so that cooling density is approximately constant during the sheet 1 is cooled and passed while conveying a steel sheet 1 after finish rolling, and includes: a scheduled cooling history obtaining part 101 for calculating the passing speed of the sheet in accordance with the target cooling finishing temperature information and reflecting it to the cooling system 4, and obtaining the scheduled cooling history of the steel sheet 1 by the cooling system 4; a real intermediate temperature information obtaining part 102 for obtaining a real intermediate temperature information in a predetermined portion in the longitudinal direction of the steel sheet 1 at the intermediate position M of the cooling system 4; and a sheet passing speed correcting part 103 for correcting the sheet passing speed which is reflected to the cooling system 4 on the basis of the scheduled cooling history obtained by the scheduled cooling history obtaining part 101 and the real intermediate temperature information obtained by the real intermediate temperature obtaining part 102.

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