SECONDARY COOLING METHOD IN CONTINUOUS CASTING

摘要

PROBLEM TO BE SOLVED: To provide a secondary cooling method with which the bulging at the last solidified part is restrained and the center segregation can be prevented when a continuous casting is applied to steel. SOLUTION: Water film flowing is formed at a gap between a water film forming plate continuously shifted in the reverse direction to the drawing-out direction of a cast slab and the cast slab, and the cast slab in the range with which the thickness D of the cast slab and the thickness d of solidified shell satisfy 0.4D<=d<=0.5D, is cooled with the water film flowing.