| 摘要 |
PURPOSE:To improve shape and quality of a product by constituting a sleeve with inner and outer layer sleeves, making the specific range of the outer layer sleeve the thin thickness and if necessary, varying cross sectional area of cooling groove. CONSTITUTION:The sleeve roll for casting is made of multiple layer construction and the outer sleeve 1 and inner layer sleeve 2 are formed, and a part of 0.3-1.0 times of the width of the plate P on the outer layer sleeve 1 is made to thin thickness. Further, if necessary, the cross sectional area of a cooling grooves 3a at inner part and near the center in the cooling grooves 3a, 3b arranged at the circular direction of the inner layer sleeve 2 are deeper than the cooling grooves 3b at end parts. By this method, the sleeve step part for casting is formed and also the cooling capacity of the metal plate P at center part is increased and the variation of the plate crown is reduced. Therefore, the shape and quality of the product metal plate P is improved. |
