To reduce the defect caused by inclusion in a cast slab by preventing descending flow concentrated along a short side frame of a mold without causing clogging state of molten steel flow.
In a continuous casting method, by which electromagnets having almost the same width of a long side frame to the long side frame 1 side at the mold in the rectangular cross sectional mold are arranged opposite to the magnetic poles 7 and electromagnetic force is acted to the molten steel flow spouted in the mold from an immersion nozzle 3 to control the molten steel fluid, the electromagnets to be arranged at the long side frame 1 side of the mold are arranged so that its magnetic pole is arranged with the height difference at the center part of the width direction of the long side frame. Further, this height difference is made to 30-50mm. Then, the frequency of current impressed to the electromagnet is set to ≥1Hz and the magnetic field is made magnetic field static type AC magnetic field.
KUBO NORIKO
MURAKAMI KATSUHIKO
