CONTINUOUS CASTING METHOD OF STEEL CAST SLAB

摘要

PROBLEM TO BE SOLVED: To provide a continuous casting method of a steel cast slab capable of reducing center segregation generated at a center part of a continuously cast slab of a steel. SOLUTION: The steel cast slab is continuously cast while rolling reduction is applied to the cast slab with rolling reduction rolls of a continuous casting machine 1 including a plurality of the rolling reduction rolls capable of applying rolling reduction force to the cast slab 10 during casting. The varying amount of the thickness of the cast slab measured in a range from a position where the solidification of the center part of the cast slab is completed to a position separated 3 meters from the position at a downstream side in the casting direction of the continuous casting machine is controlled to be 0.5 mm or lower by adjusting the opening degree of the rolling reduction rolls. COPYRIGHT: (C)2010,JPO&INPIT