| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform high-accuracy dynamic control and to reduce effect to impartation of required quality to the product. <P>SOLUTION: The cooling control apparatus 100 controls a cooling apparatus 4 which cools a steel sheet 1 with the volume of cooling water so that cooling strength is fixed during cooling and threading while conveying the steel sheet after finish rolling. A sheet passing speed is calculated in accordance with the target cooling finish temperature information and used by the cooling apparatus 4 and also this apparatus is provided with a predetermined cooling history obtaining part 101 for obtaining the predetermined cooling history of the steel sheet 1 with the cooling apparatus 4, an actual intermediate temperature information obtaining part 102 for obtaining an actual intermediate temperature information in a prescribed portion in the longitudinal direction of the steel sheet in the actual intermediate position M of the cooling apparatus 4 and, on the basis of the predetermined cooling history obtained by the predetermined cooling history obtaining part 101 and the actual intermediate temperature information obtained by the actual intermediate temperature information obtaining part 102 and a sheet passing speed correcting part 103 for correcting the sheet passing speed which is used by the cooling apparatus 4. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
