| 摘要 |
PROBLEM TO BE SOLVED: To secure the sufficient performances in an electromagnetic brake and an electromagnetic stirring, related to a method for continuously casting steel while controlling the flowing of molten steel in a mold by using an electromagnetic coil unit useable for the electromagnetic brake together with the electromagnetic stirring, for example, when a slab is continuously cast. SOLUTION: This continuous casting method is the one, with which the electromagnetic brake or the electromagnetic stirring is selectively acted to the molten steel 2 by making to flow a direct current or multi-phase alternating current having≥3 phases to coils arranged at the outer circumference of the long wall sides 3b. The coils are arranged to the same pieces on each long wall side and (2n+2) (n is natural number) in the total in the mold. Each coil set has two pieces of coils wound on the outer circumferential part in the respective magnetic pole iron core and one piece of coil wound on the outer circumferential part with two pieces of magnetic pole iron cores together. At the electromagnetic stirring time, in the adjacent coils at each long wall side, the multi-phase alternating current having 90°to 120°current phase difference is made to flow. Further, at the electromagnetic braking time, the direct current is made to flow to the one piece of coil wound on the outer circumferential part to each coil set with two pieces of magnetic pole iron cores together, or the direct current is made to flow three pieces of coils. COPYRIGHT: (C)2007,JPO&INPIT
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