| 摘要 |
PROBLEM TO BE SOLVED: To provide a roll for twin roll type continuous casting, by which the damage of the roll edge part and a side weir refractory, the leakage of molten metal, etc., caused by thermal deformation of the roll edge can be avoided. SOLUTION: The roll end surface 9 being in contact with the side weir, has a tapered part inward of an obtuse angleαto the barrel surface of the roll as the cooling roll for twin roll type continuous casting. The angleαis decided as the following relations depending on the condition. That is, 0<α< tan<-1> (UL/h)+π/2, furtherα=θ+π/2,θMP<=θ<=θKP, furtherα=θMP+(θMP +θKP)/2+π/2. Wherein, (h) is the height in the end surface formed as the tapered part, UL is the min. gap which does not generate the molten steel leakage between the cooling roll and the side weir,θis the leaning angle by projecting the roll end surface caused by thermal deformation of the cooling roll,θMP andθKP are the above angleθat a meniscus part and a kissing part in the molten steel pool part, respectively.
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