METHOD FOR CONTINUOUSLY CASTING STEEL

PROBLEM TO BE SOLVED: To control the flow of molten steel by using a moving magnetic field while restraining the occurrence of standing wave determined by a cast slab width, when the flow of the molten steel in a mold is controlled by applying a linear type movement magnetic field to the molten steel in the mold. SOLUTION: When the flow of the molten steel is controlled by applying the moving magnetic field to the molten steel 1 using a linear type movement magnetic field-generating apparatus 3; the frequency of the applied moving magnetic field is set to be in the range for avoiding a frequency of the standing wave calculated with the following (1) expression based on the width size of the cast slab, wherein, in the (1) expression, f0: the frequency of the standing wave (Hz), n: mode number, g: gravitational acceleration (m/sec2) and L: the cast slab width (m). f0= [(ng)/(4πL)]0.5...(1). COPYRIGHT: (C)2007,JPO&INPIT