ROLL FOR CONTINUOUS CASTING

摘要

PROBLEM TO BE SOLVED: To provide a roll for continuous casting capable of preventing crack due to the thermal stress from a cast piece and capable of preventing the local reduction of a roll diameter.SOLUTION: In a roll for continuous casting, plural circumferential grooves 21, 22 are formed on the surface layer of the roll 5 over the whole width direction. The grooves formed on a central part 5c of the roll 5 in a width direction are the deep grooves 21, each of which has a groove depth Dc in which a groove bottom receives no thermal effect from the cast piece 4 and has a groove width Wc in which the side walls of the groove do not contact with each other. Besides, the grooves formed on both end parts 5e in the width direction of the roll 5 including the portions contacting with both end parts in the width direction of the cast piece 4 having at least minimum dimension are the shallow grooves 22, each of which has a groove depth De shallower than the deep groove 21 and a groove width We and groove pitch Pe larger than those of the deep groove 21.