| 摘要 |
<p>PURPOSE:To execute smoothly a travelling plate width change by reducing a width variation, by executing a feedback control of a roll force automatic controlling system, and changing a target value of an opening, with regard to an opening of a vertical roll of a hot strip mill. CONSTITUTION:A rolling reaction force and a roll opening are detected by a rolling reaction force detector 4 and a cylinder position detector 5 provided on a vertical mill 2, by which a width deviation of a rolling material 1 of a delivery of a horizontal mill 3 is operated by a width deviation arithmetic unit 6. This deviation is compared with a data stored in a storage and width change quantity adding device 7, an opening of the vertical mill 2 is controlled by adjusting a hydraulic servo-valve of a hydraulic cylinder through a manipulated variable arithmetic unit 10 and a hydraulic rolling reduction control device 11, and a plate width of the rolling material 1 is fixed. When changing a plate width, a plate width change manipulated variable arithmetic unit 9 is operated by a control of a tracking device 8, a change quantity is outputted to the storage and width change quantity adding device 7, and the plate width is controlled based on an added data.</p> |
