| 摘要 |
PROBLEM TO BE SOLVED: To perform outlet side plate thickness control in an intermediate stand constituting a tandem rolling mill, and to avoid excessive control by the outlet side plate thickness control.SOLUTION: A rolling control device for controlling a tandem rolling mill for rolling a rolling material with a plurality of pairs of rolls 11 to 14 includes: a stand plate thickness control parts 61 to 64 which control a rolling mode with the plurality of pairs of rolls by feedback control such that plate thickness of the rolled material which has been rolled approaches to a designated set plate thickness; and an intermediate stand plate thickness correction amount determining device 501 and an intermediate stand plate thickness correcting device 502 which change the set plate thickness. When changing the set plate thickness in the feedback control of the roll arranged on at least one before the last stage in a rolling direction of the rolled material, out of the plurality of pairs of rolls, the set plate thickness is changed in accordance with a change rate determined such that a change amount of the set plate thickness per unit time becomes smaller than a predetermined threshold. |
