Induction heater for flat work pieces

TLDR: In this paper, the conductors of a pair carrying current in opposite directions are respectively mounted adjacent to opposite faces of the flat workpiece but offset horizontally, this offset being, however, small relative to the offset between any two conductors on the same side of the workpiece.

Abstract: Induction heater for flat work pieces.. GC-. Particularly for heating continuously travelling strip or sheet, the conductors of a pair carrying current in opposite directions are respectively mounted adjacent to opposite faces of the flat workpiece but offset horizontally, this offset being, however, small relative to the offset between any two conductors on the same side of the workpiece. The offset may be adjustable or the leads rotatable about their long axes. Separate (e.g. hairpin) inductors may be mounted on opposite sides of the workpiece with their corresponding conductors offset, their mean currents being preferably equal and antiphased. The arrangement overcomes the problem of fluxing thin material conventionally requiring high frequency, and accommodates itself to workpieces of different thickness.