| 摘要 |
<p>PURPOSE:To improve crown accuracy by providing a sheet crown detector to the inlet side of a rolling mill, disposing a sheet length detector at need and executing work roll bending control in accordance with respective detection data. CONSTITUTION:The sheet crown detector 8 is provided to the upper stream side of the rolling mill 1 and the sheet length detector 9 is disposed at need to the upper stream side thereof. The detector 8 has X-ray signal transmitters/ receivers 12, 13 and is set in a truck 14. The material characteristic value of the inlet side is inputted together eith a set crown value Cr1 to an arithmetic control unit 11 and the correction value of roll bending is determined by the arithmetic control of the detection data of the crown detector 8 and the length detector 9 at the time of rolling. Since the feed forward control is executed by providing the crown detector 8 to the inlet side of the rolling mill, the crown accuracy of the sheet is improved.</p> |
