Electric heating – Metal heating – Of cylinders
Patent
1982-11-22
1984-09-18
Envall, Jr., Roy N.
Electric heating
Metal heating
Of cylinders
219 1061R, 219 1079, 219 1075, 219 1049R, H05B 610
Patent
active
044726163
ABSTRACT:
Continuously moving, elongated, thin work products are subjected to homogeneous electromagnetic inductive heating in the transverse direction. The heating is achieved by an induction heating apparatus having a rotating inductor with a plurality of magnetic poles and an adjustable yoke. The inductor is rotatable about an axis and the work product is guided by a rotatable support in a loop path coaxial with the axis. The yoke includes at least two elements that are movable relative to one another to vary gap between the inductor and the yoke to thereby generate a traverse profile of the resultant moving magnetic field across the width of the work product. The magnetic field is uniform in the center zone of the work product, then at either edge of the work product, first increases and then subsequently decreases to a value below the uniform field with increasing distance away from the center zone.
REFERENCES:
patent: 2832877 (1958-04-01), Dreyfus
patent: 3444346 (1969-05-01), Russell et al.
patent: 4350861 (1982-09-01), Pouillange et al.
patent: 4425489 (1984-01-01), Pav et al.
Camus Jean-Paul
Maurice Jean
Travers Roger
CEM Compagnie Electro Mecanique
Envall Jr. Roy N.
Leung Philip H.
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