Heating device for inductive heating of metal structures or metal-containing structures, has a shaft and/or shaft journal wholly or partially comprised of an electrical insulator or electrical conductor with predetermined conductivity

摘要

The heating device comprises two electromagnets (3,4) for generating a magnetic field, and a rotating element (6) for rotating the to-be-heated structure (8) about the rotation axis (A). The rotating element has a shaft and/or a shaft journal (7) attached to the to-be-heated structure. The rotating element rotates the shaft and/or the shaft journal about the axis of rotation. The shaft and/or the shaft journal is wholly or partially comprised of an electrical insulator or an electrical conductor with a conductivity of less than 5/*10 4S/m or 0.1/*10 6S/m.