| 摘要 |
PURPOSE:To make the free control of a projecting plate crown and to prevent the generation of composite elongation, etc., in a 1/4 part in the structure of a pair of rolling rolls formed with an S-shaped initial roll crown by forming said crown to a specific curve. CONSTITUTION:The initial roll crown of a pair of the rolls having the same initial barrel length such as work rolls provided to a stand mill, etc. for executing rolling is formed by the curve of the cubic function having the terms of second degree or below. The crown on one side, for example, crown 3, of the initial roll crowns 3, 3' of the bottom surface of the upper roll 1 and the top surface of the lower roll 2 is formed of part of the curve of the cubic function. The initial roll crown for the other crown 3' is formed of the relative parallel moving curve in the axial direction of the cubic function curve in such a manner as to form the initial roll crown to the part of the position where the outside diameter of the roll is smaller than the curve part of the roll 1. |
