| 摘要 |
PROBLEM TO BE SOLVED: To provide a roll for continuous casting with which exchanging frequency can be lowered by allowing longer service life than that of conventional rolls. SOLUTION: Many slits 3 having high aspect ratio (depth/width) and curved surface state hollow parts 4, are formed on the outer peripheral surface of a barrel part of the roll for continuous casting. The aspect ratio is desirable to be≥10 and the diameter of the hollow part 4 is desirable to be larger than the slit width. Partially thermal expansion developed on the surface in contact with the slit, is absorbed with the slits 3 having high aspect ratio, and a buckling is prevented. Therefore, even in the case of rotating and cooling the roll in the reverse side, the intensive stress is not caused and crack can be prevented. COPYRIGHT: (C)2004,JPO&NCIPI
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