CONTINUOUS CASTING METHOD AND APPARATUS

摘要

A method of and an apparatus for continuously casting slabs of a metal, such as steel which do not have defects, such as vertical cracks on a surface thereof, by uniformly turning a molten metal in a meniscus plane in a mold. In a meniscus plane, the electromagnetic agitating thrusts applied along two longer sides of the mold are directed contrariwise, and a thrust directed from an immersed nozzle toward the shorter sides of the mold is set larger than that directed from the shorter sides of the mold toward the immersed nozzle. A circuit connecting each coil of an electromagnetic agitation coil unit of a shafting magnetic field system and a three-phase power source together is point symmetric with respect to the immersed nozzle and relative to the two longer sides of the mold and is divided into two portions on each longer side of the mold, and the divided portions are parallel to each other and have different impedances.