| 摘要 |
<p>PURPOSE:To stably manufacture a heat rolled plate excellent in plate width accuracy by correcting the roll opening of a width rolling mill according to the electric power of an edge heater in a hot rolling line. CONSTITUTION:The position right under the edge heater 1 of a rolled stock fed out of a group of rough rolling mills is measured by a measuring roll 6 and the result is sent to a rolling stock position storage device 7. The electric power value of the edge heater 1 at that position is sent to an electric power storage device 8 of the edge heater. A necessary rolling reduction of the width rolling mill 2 is computed by a width rolling reduction arithmetic unit 9 through the information of dimensions, material, finish rolling conditions, etc., of a rolled stock obtained from the above two signals and a host computer 10. A signal is sent from a rolling stock position storage device 7 to a roll opening controlling device 11 of the width rolling mill 2 so that a necessary width rolling reduction can be actualized considering a time lag between an edge heater 1 and a width rolling mill 2.</p> |
