Patent ID: 6502627
Filing Date: 2003-01-07
Classification: B22D

Abstract:
An apparatus for providing a magnetic field in molten steel passing from a submerged entry nozzle into and through a generally vertically oriented mold for casting steel, the mold having a pair of opposed wide faces, the magnetic brake comprising cores terminating in opposed poles immediately adjacent selected portions of the wide faces of the mold and extending generally across the width thereof, the poles forming part of a magnetic circuit also including a yoke interconnecting the poles and the molten steel within the mold, the apparatus including electrical energizing coils about the cores or selected portions thereof for generating a magnetic field within the magnetic circuit;the improvement characterized in that the faces of the poles are formed substantially as a generally horizontal array of discrete fingers, wherein each finger comprises: (i) a lowermost projecting support upon which laminar elements may be vertically stacked; and (ii) a set of laminar elements mating with and complementing the projecting support and together with the support constituting a finger pole face, at least some of said laminar elements being removable and replaceable; the magnetic properties of said laminar elements being selected for control of the magnetic field within the magnetic circuit.