ROLLING METHOD FOR MULTISTAGE CLUSTER ROLLING MILL

摘要

PURPOSE:To improve productivity, energy efficiency and the yield of materials in the stage of rolling plate materials with a titled rolling mill using split type eccentric rolls by rolling said material to the width approximately twice that of the plate materials so as to form medially high crowns in the width direction then cutting the central parts of the plate materials longitudinally. CONSTITUTION:A plate material of the narrow width <=1/2 the max. width at which the above-described rolling mill can roll is rolled by adjusting the position of the revolving axial center of backup rolls (split type eccentric rolls) 4 to approximately twice the width so as to form slightly medially high crowns in the width direction. Thereafter (in a later stage) the central part of the material 1 is cut in the longitudinal direction intersecting orthogonally with the width. As a result, the same quantity of products as in the rolling of two times is obtained with the rolling of once, whereby productivity and energy efficiency are improved. Since the rolling is performed by adjusting the axial center position of revolution of the roll 4, the products having good shapes are provided.