Title:
POWER SUPPLY COIL FOR ELECTRIC RESISTANCE WELDING AND PIPE MANUFACTURING EQUIPMENT USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/216065
Kind Code:
A1
Abstract:
A power supply coil for electric resistance welding according to the present invention, which is for the purpose of heating a steel pipe that is undergoing electric resistance welding, has: a metal coil having a single-turn tubular shape and having a pair of end surfaces facing each other in the circumferential direction; a pair of metal plates connected to the pair of end surfaces of the metal coil; a cover attached to the outside surface and/or the inside surface of the pair of metal plates and the metal coil; a side wall portion interposed between the metal coil and the cover and between the pair of metal plates and the cover; a supply pipe for supplying cooling water to a space enclosed by the metal coil, the pair of metal plates, the cover, and the side wall portion; and a discharge pipe for discharging the cooling water from the space.
Inventors:
WATANABE FUMINORI (JP)
IMANISHI AKIRA (JP)
KARUBE YOSHIFUMI (JP)
TSURUGA TAKUTO (JP)
IMANISHI AKIRA (JP)
KARUBE YOSHIFUMI (JP)
TSURUGA TAKUTO (JP)
Application Number:
PCT/JP2019/014792
Publication Date:
November 14, 2019
Filing Date:
April 03, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B23K13/08; B23K13/00; H05B6/36
Domestic Patent References:
| WO2015152059A1 | 2015-10-08 |
Foreign References:
| US3122624A | 1964-02-25 | |||
| JPH0157480B2 | 1989-12-06 | |||
| JP2010108730A | 2010-05-13 | |||
| JPH0719656B2 | 1995-03-06 | |||
| JP2014036983A | 2014-02-27 | |||
| JP2018091869A | 2018-06-14 | |||
| JP5966756B2 | 2016-08-10 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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