| 摘要 |
PURPOSE:To satisfy both of the draft and target rolling load of rolling rolls by deciding the different speed ratio between upper and lower rolls so as to make the deviation load between an actual rolling load and a target one to be zero in performing the setting up of a mill. CONSTITUTION:A draft schedule is decided by a draft, and an actually producing rolling load is calculated based on the draft. Successively, the deviation between the actual rolling load and a target rolling load is calculated, to decide a different speed ratio so as to make the deviation load to be zero by finely controlling the actually producing rolling load without changing the draft. |
