SLAB CONTINUOUS CASTING METHOD CAPABLE OF CARRYING OUT BENDING-BACK CORRECTION BEFORE COMPLETE COAGULATION

摘要

PROBLEM TO BE SOLVED: To reduce horizontal cracking while securing productivity and to manufacture products with high yield.SOLUTION: A slab is pulled out at a speed which prevents completion of coagulation up to a thickness center before a correction end point. All drive roll pairs arranged in a section R from the A point upstream by 1.1 m of a correction start point to the B point downstream by 0.9 m of the correction end point satisfy the following expression. Cast piece driving force of cast piece driving force FO-IN side drive roll of OUT side drive roll>average value FA of cast piece driving force of all drive rolls.SELECTED DRAWING: Figure 4