| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable high speed rolling without causing heat scratch by providing a plate shape control device in rolling mills of at least three stands in the rear stage of cold tandem rolling equipment and measuring the plate shape in the exit side. SOLUTION: A plate shape control device 2a, 2b, 2c is arranged in the rolling mills in the three stands, #4, #5, #6 of the rear stage, or desirably in all rolling mills, of a cold tandem rolling equipment having four or more stands of cold rolling mills. A plate shape measuring device 1a, 1b, 1c is arranged in the exit side of each rolling mill. A metallic sheet 6 is rolled in the rolling direction 7. Precision can be improved in the plate shape control by actually measuring the shape on the exit side of each rolling mill; a high speed rolling can be realized by increasing rolling tension without frequency causing breaking of a plate. In addition, with a thickness distribution measuring device provided on the entrance side of the tandem rolling equipment, and with a rolling load measuring device arranged in each cold rolling mill, a change in the plate shape is predicted; and also the change is prevented by a plate shape control device of each rolling mill.</p> |
