SECONDARY COOLING METHOD IN CONTINUOUS CASTING

PROBLEM TO BE SOLVED: To provide a secondary cooling method for continuous casting equipment, in which a slab is uniformly cooled without generating an overcooling phenomenon in the surface of the slab. SOLUTION: When a slab 10 cast by a continuous casting machine is subjected to secondary cooling while being supported by slab supporting rolls 6 in a secondary cooling zone provided at the lower part of a mold using cooling water or a mixed body of cooling water and a gas, the slab is subjected to secondary cooling while removing the remaining water of the cooling water stored in the surface of the slab during the continuous casting by the injection of a high pressure gas from injection nozzles 14. At this time, it is preferable that the high pressure gas is injected in parallel with the slab supporting rolls 6 or the high pressure gas is injected to the part of the roll chock 6a of each slab supporting roll. COPYRIGHT: (C)2011,JPO&INPIT