Patent ID: 8696976
Filing Date: 2014-04-15
Classification: B22D,C21B,C21C,F27D,Y10T

Abstract:
1. A method for regulating the flow rate and for decelerating non-ferromagnetic, electrically conductive liquids and melts using electric magnetic fields while said liquids and melts flow through a guide element when tapping metallurgical containers, said method comprising: guiding a stream of liquid or melt in a flow direction in a closed guide element through at least one stationary magnetic field with constant polarity, said guide element being a conduit pipe of an electrically conductive material, wherein magnetic field lines transversely penetrate the stream over its entire cross section, in that voltages, the level of which is proportional to a local flow rate of the stream and a local strength of the magnetic field, are induced within the magnetic field perpendicular to the magnetic field lines, in that the voltages generate electric eddy currents that are directed radially and axially relative to the flow direction of the stream and have an intensity that locally differs over the flow cross section of the stream, wherein forces of locally differing intensity that influence the flow rate of the stream are generated due to interaction between the magnetic field and the eddy currents, and in that a flow profile of the stream is homogenized and decelerated as the magnetic field strength increases.