Title:
WELDING DEVICE FOR ELECTRIC RESISTANCE WELDED PIPE
Document Type and Number:
WIPO Patent Application WO/2014/027564
Kind Code:
A1
Abstract:
Provided is a device for manufacturing electric resistance welded pipe that joins both of the end sections (2a, 2b) of an open pipe (1) at a joining section, said end sections (2a, 2b) facing an opening (2) in the open pipe (1) that extends in the direction in which said pipe runs. Joining is achieved by causing the end sections (2a, 2b) to melt using induction current generated by an induction heating means. The induction heating means comprises a first induction coil (3). The first induction coil (3) is arranged above the opening (2) without surrounding the outer periphery of the open tube (1) so that a primary current circuit that spans the opening (2) is formed.
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Inventors:
HIROTA YOSHIAKI (JP)
Application Number:
PCT/JP2013/070652
Publication Date:
February 20, 2014
Filing Date:
July 30, 2013
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B23K13/02; B21C37/08; B23K13/08; B23K13/00
Domestic Patent References:
| WO2011034087A1 | 2011-03-24 |
Foreign References:
| JPH0910961A | 1997-01-14 | |||
| JPS58122189A | 1983-07-20 | |||
| JPS61273274A | 1986-12-03 | |||
| JPS6250088A | 1987-03-04 | |||
| JPH01118313A | 1989-05-10 | |||
| JPH0938720A | 1997-02-10 | |||
| JPH1076372A | 1998-03-24 | |||
| JPH10180350A | 1998-07-07 | |||
| JPH11285856A | 1999-10-19 | |||
| JPS5344449A | 1978-04-21 | |||
| JPH10323769A | 1998-12-08 |
Other References:
"Fundamentals and Applications of High Frequency", TOKYO DENKI UNIVERSITY, pages: 79,80
See also references of EP 2886237A4
See also references of EP 2886237A4
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
アインゼル Felix-Reinhardt (JP)
アインゼル Felix-Reinhardt (JP)
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