| 摘要 |
PROBLEM TO BE SOLVED: To restrain temperature unevenness of a cast piece surface, when cooling a cast piece by a secondary cooling zone of a continuous casting machine.SOLUTION: A cooling method is provided for cooling a cast piece 11 cast by the continuous casting machine by the secondary cooling zone. In the cooling method, the secondary cooling zone comprises a front stage cooling part and a rear stage cooling part, and the front stage cooling part cools so that a spray water sprinkling range by first cooling means 13 is held in a cooling state of membrane boiling, and the rear stage cooling part cools so that an area of the cooling state of transition boiling or nucleus boiling can be formed in respective positions in the cast piece width direction in a casting directional position in the spray water sprinkling range by second cooling means 14. |
