Heating coil for high-frequency heating device

The heating coil design with opposing current directions and cooling channels addresses overheating and depth control issues, ensuring efficient and precise quenching with maintained mechanical strength.

JP7887177B2Active Publication Date: 2026-07-09TKE CO LTD(JP)
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Patent Information

Application Number
JP2023075197
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-04-28
Publication Date
2026-07-09
Estimated Expiration
2043-04-28

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Abstract

To provide a heating coil capable of efficiently hardening a workpiece in a short time, effectively preventing the workpiece from being overheated, and easily controlling the depth of a hardened layer formed by hardening the workpiece.SOLUTION: A heating coil 1 is integrally formed using a molding method that repeats laying, melting, solidifying, and laminating powder made of a conductive material on the basis of three-dimensional data, and includes grounding portions 2a, 2b that abut against electrodes, supporting portions 3a, 3b arranged so as to be perpendicular to the grounding portions 2a, 2b, respectively, and a heating portion 4 provided so as to connect the tips of the supporting portions 3a, 3b. The heating portion 4 also includes an intermediate heating portion 14 that causes a supplied high-frequency current to flow in a first direction, and a lower heating portion 15 that causes the supplied high-frequency current to flow in a second direction opposite to the first direction.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • High-frequency heating coil body

    JP1999219780A

  • Induction heating coil of tapered body

    JP2000068043A

  • High-frequency induction heating coil for shaft-like member with stepping

    JP2005054246A

  • Induction heating coil

    JP2020115428A

  • Heating coil and hardening device

    JP2021093354A