| 摘要 |
PROBLEM TO BE SOLVED: To provide a forced cooling equipment and method capable of performing uniform forced cooling for a steel plate without impairing rolling efficiency, and making it possible to obtain a steel plate having superior flatness, less residual distortion, and consistent material. SOLUTION: In the forced cooling equipment for a steel plate, there are installed a slow cooling device, a hot straightening machine, a rapid cooling device, and a warm straightening machine, successively in the back of the rolling mill of a steel plate. In this forced cooling equipment, the slow cooling device is provided with a cooling capacity for imparting a cooling speed of 5-15°C/s to a steel plate of 25 mm thick. The rapid cooling device is desirably provided with a cooling capacity for imparting a cooling speed of 30°C/s or higher to the steel plate of 25 mm thick. COPYRIGHT: (C)2006,JPO&NCIPI
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