| 摘要 |
PURPOSE:To always produce a sheet having good surface shape and thickness accuracy by arranging a space for hydraulic pressure near at base part of roll axial side for sleeve reinforcing plate and making asymmetrically the sleeve reinforcing plate positions for cooling rolls faced mutually. CONSTITUTION:The cooling sleeve 4 and hydraulic sleeve 7 are executed as shrinkage fitting to a roll shaft 6 of the cooling roll and a hydraulic groove 8 is arranged near at the base part of roll axial side for the sleeve reinforcing plate composing cooling water circuit space 5 and the sleeve reinforcing plate positions for the cooling rolls faced mutually are arranged asymmetrically. At the time of producing the rapid cooled sheet 3 from molten metal at the place between the cooling rolls rotating at high speed, the thickness of sheet 3 measured to all width direction by a plate thickness measuring instrument 9 is inputted into a control device 10. Next, hydraulic pressure to be supplied to each the hydraulic groove 8 from hydraulic unit 11, 11 ', 12, 12' is independently controlled to control the thickness of the sheet 3. In this way, the sheet having good surface shape and thickness accuracy is produced. |
