Patent ID: 6494249
Filing Date: 2002-12-17
Classification: B22D

Abstract:
A method for continuous or semi-continuous casting of metal comprising the steps of supplying a primary flow (p) of hot metallic melt into a mold wherein the melt will at least partially solidify into a cast strand, (b) applying at least one static or periodically low-frequency magnetic field having a flux density to the melt in the mold to brake and split the primary flow of hot metallic melt and form a controlled secondary flow in the non-solidified parts of the cast strand, (c) controlling the magnetic flux density of the magnetic field based on casting conditions, (d) detecting changes in the secondary flow in the cast strand, (e) supplying information on detected changes in the secondary flow to a control unit where the changes are evaluated, and (f) regulating the magnetic flux density on-line based on said evaluation to maintain or adjust the controlled secondary flow.