| 摘要 |
PROBLEM TO BE SOLVED: To provide a method where a slab in high temperature after continuous casting can be cooled at high efficiency without generating shape deformation caused by warpage even in cooling from a high temperature region where surface temperature exceeds 600°C. SOLUTION: Disclosed is a cooling method for a continuously cast slab where a slab in high temperature after continuous casting is periodically repeatedly subjected to water spray treatment and water spray stopping treatment, so as to cool the slab. In the above cooling method, by periodically repeatedly subjecting the side faces in the longitudinal direction of stacked slabs in high temperature to water spray treatment and water spray stopping treatment, large effect can be exhibited. Preferably, water spray time is controlled to 5 to 30 min and water spray stopping time is controlled to 5 to 30 min, and, more preferably, the upper face of the slab in the uppermost stage in the stacked high temperature slabs is subjected to temperature holding treatment. COPYRIGHT: (C)2008,JPO&INPIT
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