METHOD OF ELECTROMAGNETIC STIRRING IN CONTINUOUS METAL CASTING PROCESS

摘要

A method of electromagnetically stirring molten metal in an unsolidified portion of a continuously cast strand by a magnetic field formed by applying alternating current to at least one set of exciting coils, said method comprising: supplying to one of said exciting coils a first alternating current of a frequency in the range of 1 - 60 Hz and to the other one of said exciting coils a second alternating current with a frequency difference in the range of 0.03 - 0.25 Hz from said first alternating current to form a varying composite magnetic field thereby to induce stirred movement of varying direction and intensity in said molten metal.