ELECTROMAGNETIC STIRRING

摘要

An apparatus for stirring a molten metal in an open topped mould, in for example a continuous casting process, including means positioned above the mould for producing a moving magnetic field which penetrates into the mould. The magnetic field may be produced by a series of electrical conductors which are positioned above the mould. Each of these conductors are connected to a different phase of a multi-phase alternating current supply and are arranged relative to one another so as to produce a magnetic field which either moves linearly or rotates about the vertical axis of the mould. Ferromagnetic pole pieces may be associated with the conductors to provide a low reluctance flux path which will reduce leakage of the magnetic field above the conductors and concentrate the field below the conductors where it penetrates down into the mould.