| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous casting method where the generation of corner cracks in a bloom is effectively suppressed, and a stable operation can be realized. SOLUTION: The operation is performed in such a manner that electromagnetic stirring conditions are controlled in such a manner that, provided that the concentration of carbon in ladle molten steel is defined as [C] (mass%), the segregation degree Ke in the surface layer part from the surface of a bloom to a depth of 30 mm satisfies the inequalities (1) and (2), and further, the segregation degree Ke at the inside than 30 mm from the surface of the bloom reaches≤1.05: Ke≤1.0163×[Co]<SP>(0.0731)</SP>+0.05 (1), and Ke≥1.0163×[Co]<SP>(0.0731)</SP>-0.05 (2); wherein, the segregation degree Ke is expressed by the ratio between the maximum carbon concentration[Cmax] (mass%) and the above carbon concentration [C], ([Cmax]/[C]). COPYRIGHT: (C)2006,JPO&NCIPI
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