| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous casting method with which both of coarse granular crystal near the center and coarse columnar crystal surrounding the above crystal can be formed into fine equiaxial crystals, and a continuously cast slab having fine solidified structure, cast by using this method. SOLUTION: The method for continuously casting molten steel has the peculiarity, in which MgO-Al mixture or MgO-Ti mixture is added into the molten steel in a ladle, a tundish or a mold, and successively, a continuous casting apparatus having electromagnetic coils (3, 3') at the interval from a meniscus in the mold 6 to 10 m below the mold 6 is used, and while vibrating non- solidified molten steel 2 surrounded with the solidified shells 1 into the normal directions (4, 5) and the reverse directions (4', 5') with movable magnetic field generated with these electromagnetic coils, the cast is performed.
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