Abstract: A method and an apparatus for heating a sheet material made of an electrically conductive, non-magnetic material, the apparatus including at least one coil arrangement with DC-carrying windings that is made to rotate around an axis oriented perpendicular to the sheet material and to thereby induce eddy currents in the sheet material.

Abstract: An apparatus and related method for inductively heating a workpiece is disclosed. A first magnetic unit is rotated about a metallic workpiece utilizing a super-conducting spool, while a second magnetic unit can be utilized to generate an exterior magnetic field operable to drive the first magnetic unit.

Abstract: An induction heater for heating metallic billets with a yoke of E-shaped cross-section, on the middle limb of which a superconducting coil is seated, has a well located between the middle limb and each one of the respective two outer limbs. A billet can be heated by being rotated in each one of the two wells.

Abstract: During induction heating of a billet of an electrically conducting material by rotating the billet relative to a magnetic field that is generated by means of at least one direct-current-carrying superconducting winding on an iron core, the reverse-induction voltage can be reduced when a direct current is generated and maintained in the winding at a value that generates in the iron core at least in the region of the winding a magnetic flux density at which the relative permeability of the material of the iron core is less than in a zero-current state of the winding.