WITHIN-MOULD ELECTROMAGNETIC STIRRING METHOD IN HORIZONTAL CONTINUOUS CASTING AND APPARATUS THEREFOR

摘要

The invention relates to a within-mould electromagnetic stirring method used in a horizontal continuous casting apparatus including a tundish (1), a pouring nozzle (2), a mould (4) connected to said pouring nozzle (3), and an electromagnetic coil (5) disposed around said mould, for electromagnetically stirring molten steel passing through said mould (4) by a magnetic field established by said electromagnetic coil, the method and apparatus being characterised in that said magnetic field is induced by an alternating current with a frequency (f) of 1-15 Hz and its maximum magnetic flux density G (in gauss) is within the range from 1045.e<-0.16f> to 2054.e<-0.12f> and in that the position where said maximum magnetic flux density is produced is located within the range of 350 mm from the junction between said pouring nozzle and said mould in the direction of drawing of the cast-piece.