ROLLING METHOD FOR REDUCING WIDTH OF SLAB AND MANUFACTURE OF STEEL SHEET USING THE SAME

摘要

PURPOSE: To freely change the width of a slab into a smaller size in a specified range by executing rolling with horizontal rolls and flatening the thickness while preventing the spreading of a prescribed width with vertical rolls after reducing the width to the prescribed width by buckling the slab in the width direction with the vertical rolls. ;CONSTITUTION: A thin slab 9 having fixed dimensions is manufactured with a continuous casting equipment, directly sent to a 2-high groove mill 10 and universal mill 11 which is arranged in tandem with the 2-high mill which are incorporated in a line in an uncut state, width and thickness is reduced by rolling and, next, a steel sheet 13 of product is made by further rolling to a prescribed thickness with a Sendzimir type strong draft mill 12. Since it is possible to reduce the width of the thin slab 9 in the max. range of 300mm with the 2-high groove mill 10 and universal mill 11 which is arranged in tandem with the 2-high mill which are incorporated in this equipment, a desired hot rolled steel sheet 13 having different width and thickness is fully continuously manufactured without executing in-line width change of the thin slab 9 in the continuous casting stage.;COPYRIGHT: (C)1995,JPO