Title:
INDUCTION HEATING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP3694364
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To maintain insulation and dispense with enlargement of power source and its capacity by arranging a shield material made of a good conductive material between a site free of a heating site surrounded by a work coil of the heating site and the work coil.
SOLUTION: An end face of a metal tube 1 is processed for a protrusion taper and an end face of a metal tube 2 is processed for a recess taper, respectively, both of which are engaged with each other by pinching an amorphous metal foil, and a heating site 4 in a limited range including a junction part 3 under pressure is heated. The site 4 is surrounded by a work coil 5, and a shield material 6 is arranged between a site out of the site 4 of the sites surrounded by the coil 5 and the coil 5. The shield material 6 is a good conductive material such as copper. When a current such as high-frequency current flows a winding 12 of the coil 5, an induction current flows the part 4, and the induction current flows the shield material 6 in the site out of the site 4. Consequently, the site 4 in the limited range in a lengthwise direction including the junction part 3 is selectively heated, and heating is restricted in the site out of the site 4.
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Inventors:
Yuichi Sato
Sei Ozaki
Yasushi Hasegawa
Eiji Tsuru
Sei Ozaki
Yasushi Hasegawa
Eiji Tsuru
Application Number:
JP22678796A
Publication Date:
September 14, 2005
Filing Date:
August 28, 1996
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
H05B6/10; B23K13/01; B23K20/00; H05K9/00; (IPC1-7): H05B6/10; B23K13/01; B23K20/00; H05K9/00
Domestic Patent References:
| JP4333323A | ||||
| JP5068097U |
Attorney, Agent or Firm:
Hiroaki Tamura