| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technology for controlling temperature of hot rolled sheet with high accuracy. SOLUTION: A thermometer 8 to measure the temperature of a sheet 2 is arranged between stands 1d and 1e of a tandem finishing mill 1, and based on measured values of the thermometer 8, each of cooling water amounts supplied to the sheet 2 respectively from cooling devices 4a, 4b on the upstream side of the location of the thermometer 8 in the direction of transportation is adjusted by feed back control At the same time, each of cooling water amounts supplied to the sheet 2 respectively from a cooling devices 4e, 4f between stands on the downstream side of the location of the thermometer 8 and from a cooling device 7 located along a hot run table is adjusted by feed forward control.</p> |
