Apparatus for regulating the solidification of the liquid core in a continuous casting

Claim 1

Apparatus for use in a continuous casting plant including a mold in which a strand is initially formed and said mold having an outlet from which the strand is withdrawn with a thin solidified skin and a liquid core so that the liquid core solidifies as the strand continues to move outwardly away from the outlet of said mold, wherein the improvement comprises a magnetic yoke disposed about the continuous casting strand in the region where the strand contains a liquid core, poles for said magnetic yoke positioned on opposite sides of the strand, means for supplying current to said poles for establishing a magnetic field around the strand, a pair of electrodes dIsposed on opposite sides of the strand with the axis of said electrodes arranged perpendicularly to the axis of said poles, and means for supplying a source of direct current to said electrodes and for reversing the polarity of said electrodes so that a small d-c field can be established for increasing or decreasing the force of the magnetic field on the liquid core within the continuous casting strand.