The Electricity Council

William Barry Jackson

Ralph Waggott

Roger Charles Gibson

Ian G Harvey

Philip H Warren

In the induction heating of rotationally symmetrical workpieces, the workpieces are passed through the treatment region with magnetic flux in the region parallel to the axis of symmetry of each workpiece as it passes through the treatment region. In order to obtain uniform heating of the workpieces, flux modifying members are provided which are arranged so that the resultant distribution, across the workpiece transversely of the axis thereof of the magnetic flux density in the axial direction is substantially inversely related to the distance from the axis of rotational symmetry of the workpiece.

Heat treatment of rotationally symmetrical workpieces by induction

Transverse flux heating of strip material is effected with a flux distribution having a low value near the margins of the strip and rising substantially uniformly inwardly from the margins to a central peak value for narrow strip or two peaks with a central lower flux region for wider strip. Constructions of pole pieces to achieve the required flux distribution are described.

Growing community of inventors

Wirral, United Kingdom

William Barry Jackson