Transverse flux induction heating of metal strip
First Claim
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1. An induction heating system comprising a structure having at least two support assemblies each of which is capable of supporting a transverse flux induction heater having a pair of heater elements;
- a transverse flux induction heater having a pair of heater elements of a first width supported by one of the assemblies;
a transverse flux induction heater having a pair of heater elements of a different width supported by the other assembly;
means for displacing the support assemblies so that the assemblies can be brought in turn to a changeover position close to a path taken by metal strip to be heated moving in the direction of its length;
means for displacing the transverse flow induction heater supported by the assembly at the changeover position to an operating position in which the heater elements are located on opposite sides of the path and guide means for supporting the transverse flux induction heater in the operating position and as it is displaced between the operating position and the changeover position.
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Abstract
An installation comprises a support frame having a plurality of locations each of which is capable of supporting a transverse flux induction heater. The locations are movable so that in turn they can take up a position adjacent a path taken by moving metal strip to be heated. From this position, the heater supported in the location can be displaced to an operating position where the two elements of the heater are on opposite sides of the strip passing along said path.
25 Citations
16 Claims
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1. An induction heating system comprising a structure having at least two support assemblies each of which is capable of supporting a transverse flux induction heater having a pair of heater elements;
- a transverse flux induction heater having a pair of heater elements of a first width supported by one of the assemblies;
a transverse flux induction heater having a pair of heater elements of a different width supported by the other assembly;
means for displacing the support assemblies so that the assemblies can be brought in turn to a changeover position close to a path taken by metal strip to be heated moving in the direction of its length;
means for displacing the transverse flow induction heater supported by the assembly at the changeover position to an operating position in which the heater elements are located on opposite sides of the path and guide means for supporting the transverse flux induction heater in the operating position and as it is displaced between the operating position and the changeover position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a transverse flux induction heater having a pair of heater elements of a first width supported by one of the assemblies;
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16. A method of operating an induction heating system having a structure with at least two support assemblies each of which is capable of supporting a transverse flux induction heater having a pair of heater elements, and means for displacing the support assemblies so that any one of the assemblies can be brought in turn to a changeover position close to an operating position in which the heater elements are located on opposite sides of the path taken by metal strip to be heated moving in the direction of its length;
- said method comprising the steps of locating a transverse flux induction heater in said operating position, the width of the heater elements being appropriate for the width of the metal strip;
locating a transverse flux induction heater having a pair of heater elements of a different width appropriate for metal strip of different width in one of said support assemblies and keeping one of said support assemblies empty; and
when the strip to be heated is changed to strip of said different width, displacing the support assemblies so that the empty assembly is brought to the changeover position, the heater in the operating position is displaced along guide means to the support assembly at the changeover position;
displacing the support assemblies to cause the assembly supporting the heater with the elements of said different width to be brought to the changeover position and the heater at the changeover position is displaced along the guide beams to the operating position.
- said method comprising the steps of locating a transverse flux induction heater in said operating position, the width of the heater elements being appropriate for the width of the metal strip;
Specification