| 摘要 |
<p>PURPOSE:To improve dimensional precision over the entire length of a rolling stock by controlling a tesion acting on the rolling stock between plural roll stands, at the time of performing a steel bar rolling through the use of plural roll stands. CONSTITUTION:The dimensional information of a rolling stock 3 between roll stands 1, 2 is measured by a profile meter 4 (4A), the dimensional information of the rolling stock 3 coming out of the roll stand 2 is also measured by a profile meter 4 (4B), and a tension quantity between the roll stands 1, 2 is detected from the fluctuation of the dimension of an unrestrained part. The tension between the roll stands 1, 2 is controlled, by means of this tension quantity, through a feedback control of the control system between the roll stands 1, 2 by a controller 5; and thus the dimensional fluctuation of the rolling stock 3 is reduced which is generated by the tension at the time of rolling.</p> |
