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Induction heating device and method for metal plate

A technology of induction heating equipment and metal plates, applied in induction heating, electric heating devices, coil devices, etc., can solve problems such as uneven temperature distribution

Active Publication Date: 2008-02-06
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

An embodiment of the present invention can also improve the uneven temperature distribution caused by the metal plate snaking forward

Method used

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  • Induction heating device and method for metal plate
  • Induction heating device and method for metal plate
  • Induction heating device and method for metal plate

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Embodiment Construction

[0063] The invention will now be described with reference to the accompanying drawings. All figures show a single turn induction coil wrapped around a metal plate. However, the number of turns of the induction coil is not limited to a specific number in the present invention.

[0064] Fig. 6 is a schematic plan view of an example of the induction heating device of the present invention. FIG. 7 is a schematic cross-sectional view taken along line 7-7 of FIG. 6 . In the present invention, the induction coil located above the metal plate and another induction coil located below the metal plate are arranged to be spaced apart from each other along the longitudinal direction of the metal plate at least at one position in the transverse direction of the metal plate. The distance between the upper induction coil and the lower induction coil spaced apart from each other in the longitudinal direction is defined as the distance between the two projected images of the upper induction c...

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Abstract

An induction heating apparatus for heating a traveling metal plate includes an induction coil for surrounding the metal plate. The induction coil includes an upper induction coil for being located above the metal plate and a lower induction coil for being located below the metal plate. The upper and lower induction coils are spaced from each other in a longitudinal direction of the metal plate a constant distance across a transverse direction of the metal plate. Each of the upper induction coil and the lower induction coil is arranged obliquely at an edge area of the metal plate so as to form an oblique angle with the transverse direction of the metal plate.

Description

[0001] Cross References to Related Applications [0002] This non-provisional application claims priority under 35 U.S.C. §119(a) to Patent Application Nos. 2005-41944 and 2005-256334 filed in Japan on February 18, 2005 and September 5, 2005, respectively. The entire contents of each of these two patent applications are hereby incorporated by reference. technical field [0003] The present invention relates to an induction heating device for metal plates such as steel or aluminum plates. More particularly, the present invention relates to an induction heating device for heating a metal plate by generating an induced current in the metal plate using an induction coil surrounding the metal plate. The present invention also relates to an induction heating device capable of heating a metal plate with high efficiency regardless of the thickness of the metal plate and whether the metal plate is magnetic or non-magnetic. The invention also relates to an induction heating device tha...

Claims

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Application Information

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IPC IPC(8): H05B6/02H05B6/36
CPCH05B6/104H05B6/44H05B2206/023
Inventor 广田芳明
Owner NIPPON STEEL CORP
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