| 摘要 |
PROBLEM TO BE SOLVED: To stably, uniformly and acceleratively cool a thick steel plate by a comparatively simple method. SOLUTION: In the cooling method of the thick steel plate, in which a cooling apparatus 4 is disposed in the following process of a finish rolling mill 2 for rolling the thick steel plate and the thick steel plate 1 in the high temp. after hot-rolling is acceleratively cooled while being transported in the cooling apparatus, cooling condition is predecided based on the dimension and the material of the thick steel plate and a cooling stop target temp. When cooling the individual thick steel plates, the above cooling condition is corrected based on the measured values of the surface temps. of the individual thick steel plates at the inlet side of the cooling apparatus, and the thick steel plate is cooled under the corrected cooling condition. Further, it is desirable to correct the predecided cooling condition based on the measured value of the surface temp. after completing the cooling.
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