METHOD FOR CONTROLLING FLUID OF MOLTEN STEEL IN MOLD FOR CONTINUOUS CASTING

摘要

PROBLEM TO BE SOLVED: To hold the optimum fluid pattern which 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 copper plate temps. in the width direction of the mold long side 2 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 copper plate temp. at each measuring point 15 and adjusting the magnetic field intensity based on the detected result so that the fluid pattern becomes the prescribed pattern. At this time, the fluid pattern is detected based on the distribution of the measured points raising the temp. and/or the distribution of the measured points lowering the temp. and this pattern can further accurately be detected by correcting the copper plate temp. from the surface shape of solidified shell. Further, the fluid control is facilitated by using the moving magnetic field.;COPYRIGHT: (C)1999,JPO