| 摘要 |
<p>PURPOSE:To control the width of a steel plate adequately when rolling the steel plate by a hot rolling mill by placing two edger rolling mills in front of rolling rolls, and then controlling the extent of opening of the trailing edger rolling mill on the basis of the detection data of the leading edger rolling mill. CONSTITUTION:For the hot rolling of a horizontal rolling mill 2 which handles a steel plate 1, two stages of edger rolling mills are arranged in front of the rolling mill 2. Before the steel plate 1 enters the horizontal rolling mill 2, a rolling load is detected by a load cell 6 added to the edger roll 3 of the leading edger rolling mill. Further, a press-down position detector 5 detects the extent of opening between edger rolls 3 and 3, and both the results are inputted to an operating device 8 to calculate corrected plate width on the basis of set steel plate width. The operated value is inputted to an opening-extent controller 9 and a pressed-down motor 10 for edger rolls 4 and 4 of the trailing edger rolling mill is driven to correct the extent of opening between the edge rolls 4 and 4 in accordance with the corrected plate width, thus automatically adjusting the plate width of the steel plate 1 to a desired value.</p> |
