| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a continuously cast slab and a continuous casting machine with which, even in the case a wide difference is caused in the solidification completion positions in a slab width direction, the improvement of central segregation uniform in the slab width direction is made possible. SOLUTION: In the method for producing a slab and a continuous casting machine, when, using a continuous casting machine 1 provided with a light rolling reduction zone 4 composed of two or more pairs of rolling reduction rolls, the rolling reduction of a slab 9 is started from when the solid phase ratio in the thickness central part of the slab 9 is≤0.4 at the light rolling reduction zone, and, while applying rolling reduction force to the slab, the solidification is completed within the range of the light rolling reduction zone so as to produce a continuously cast slab, a solidification completion position 12 in the slab width direction is detected during the casting, and, on the basis of information on the detected solidification completion position, a static magnetic field in the slab thickness direction is applied to a part in which the solidification completion position is elongated to the casting direction from a static magnetic field application apparatus 14 installed in the light rolling reduction zone. COPYRIGHT: (C)2009,JPO&INPIT
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