Apparatus for heating strip elements in a continuous pass process by electromagnetic induction
AssigneeCompagnie Electro-Mecanique
InventorsJean P. Pouillange, Jean P. Gaydon, Bernard Chausse
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Abstract
Apparatus for heating thin items in a continuous pass by induction includes an inductor driven in rotation inside a drum made of refractory material. The strip of material to be heated is driven by rollers in order to form a loop around the drum. When the strip is a metallic one, it forms the inductive element of the device. The inductor generates constant strength magnetic fields which are moved in relation to the inductive element, to thereby heat it.
Claims9
Apparatus for direct electromagnetic inductive heating of a metallic strip-shaped item in a continuous pass process wherein the metallic item forms the inductive element, comprising:
- a hollow refractory drum having an exterior surface and means for guiding a continuously moving metallic strip shaped item along a path whereby the item is supported on said exterior surface of said drum and forms a substantial portion of an appreciably circular loop;
- a magnetic inductor including a plurality of magnetized poles disposed within said drum with their polarized surfaces parallel to, and arranged about, the central axis of said loop, for generating a magnetic field of constant strength,
- means for rotating said inductor about said axis to provide relative motion between said inductor and the metallic item;
- and
- means external to said drum and the loop for providing a return path for the magnetic flux around and across said loop, whereby said portion of the loop formed by said metallic item forms an inductive element that is directly heated by said magnetic field.
Dependencies are inferred from the claim text.