| 摘要 |
PURPOSE:To improve the accuracy of the plate width of a material to be rolled and to form it into an accurate shape by providing two pairs of vertical rolls to manipulators respectively and forming a caliber shape by adjusting the positions of these rolls in the thickness direction in accordance with the thickness of the material. CONSTITUTION:Manipulators 5, 5' provided with two pairs of vertical rolls 3, 4 and 3', 4' respectively are disposed near a plate mill. These rolls 3, 3' and 4, 4' are nondriven types, and are arranged alternately by setting the rolls 3, 3' in inverse T-types and the rolls 4, 4' in T-types to form a caliber corresponding to the thickness of a material 1 to be rolled by adjusting their positions in the thickness direction of material 1. When the biting of material 1 is first started at the biting position f-f by moving it to the direction of horizontal rolls 2, the locking mechanism 10 of a manipulator 5 actuates to fix the manipulator 5. Each of horizontal rolling reduction adjusting devices 12, 15 and a vertical one of the rolls 3, 4 actuate to start successively a rolling of material 1 in its width direction by subjecting both end and edge parts of the plate width of material 1 to rolling reduction. Next, the material 1 is subjected to rolling reduction in its width direction by the rolls 3', 4'. |
