| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for continuously casting a steel slab and a continuous casting method, which can use high viscosity powder and can obtain a casting having excellent quality in which generation of surface defects and internal defects in the casting has been prevented, and further oscillation of the molding, which was indispensable until now, can be dispensed with in some cases. SOLUTION: In the mold for continuously casting the steel slab, which is composed of a long side and a short side, three step tapered portions are provided on an inner side of the long side along the casting direction, which inner side comes into contact with molten metal. Preferably, the first transition point 3a of the first step tapered portion and the second step tapered portion is located below the molten metal surface within the range from 20 mm to 80 mm, and the second transition point 3b of the second step tapered portion and the third step tapered portion is located below the molten metal surface within the range from 80 mm to 300 mm, and the angle of the first tapered portion is nearly 0°, the angle of the second tapered portion is within the range from 0.03°to 10°, and the angle of the third tapered portion is within the range from 0°to the angle smaller than that of the third tapered portion. COPYRIGHT: (C)2004,JPO
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