| 摘要 |
PURPOSE:To perform controlling of gaps with high accuracy and to make the controlling of plate width higher in accuracy by handling the roll gap completely eliminated of detection errors as an actual roll gap. CONSTITUTION:The actual roll gap of right and left vertical rolls is calculated by a roll profile operator 62 and an actual roll gap operator 63 in an actual roll gap detecting part 61. More specifically, the operator 62 operates the difference between the detected value l2 by the 2nd detector 47 and the detected value l3 by the 3rd detector 49. This operated value indicates the displacement of the surfaces of the respective vertical rolls 14 of the parts in contact with a rolling material with respect to the surfaces in the parts not in contact with the rolling material, hence, the change in the roll profile owing to the roll abrasion and thermal expansion of the parts in contact with the rolling material irrespective metal-in or metal-out. The operator 63 operates the true roll gap W0 from the preset distance L0, a diameter (d), the detected value l1 inputted from the 1st detector 41, the detected value l3 inputted from the 3rd detector 49, and the operated value DELTAl inputted from the operator 62. |
