Inside the continuous casting mold the molten steel flow control manner

摘要

PROBLEM TO BE SOLVED: To hold the optimum fluid pattern while controlling magnetic field impressed based on detected fluid pattern by detecting the fluid pattern of molten steel in a mold in a continuous casting. ;SOLUTION: The control method of the fluidity in the molten steel is executed by measuring the surface temps. of solidified shell 5 in the width direction of a cast slab in the mold 1 at plural points at the time of continuously casting the steel while impressing the magnetic field to the spouted flow 10 from an immersion nozzle 8, detecting the fluid pattern of the molten steel 4 in the mold from the variation with time of the surface temp. at each measured point 15 and adjusting the magnetic field intensity impressed based on the detected result so that the fluid pattern becomes the prescribed pattern. At this time, the fluid pattern can further accurately be detected by detecting based on the distribution of the measured points, at which the temps. raise and/or the distribution of the measured points, at which the temps. lower, or the fluid control is facilitated by using the moving magnetic field.;COPYRIGHT: (C)1999,JPO