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Title:
METAL PIPE MOLDING METHOD, METAL PIPE, AND MOLDING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/179360
Kind Code:
A1
Abstract:
This metal pipe molding method is provided with: a step for placing, between a pair of dies, a metal pipe material assuming a hollow shape; and a step for expanding the metal pipe material by supplying a fluid and bringing the metal pipe material into contact with the pair of dies, thereby molding a metal pipe having a pipe part and a flange part. In the step for molding the metal pipe, a gap is formed which is positioned between a pair of inner surfaces included in the flange part and communicates with the inner space of the pipe part, and a through hole connected to the gap is provided in the flange part.

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Inventors:
SAIKA MASAYUKI (JP)
ISHIZUKA MASAYUKI (JP)
UENO NORIEDA (JP)
NOGIWA KIMIHIRO (JP)
IDE AKIHIRO (JP)
Application Number:
PCT/JP2020/004985
Publication Date:
September 10, 2020
Filing Date:
February 07, 2020
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
B21D26/033; B21D26/035
Foreign References:
JP2006122979A2006-05-18
US20100186477A12010-07-29
JP2013158785A2013-08-19
JP2016064702A2016-04-28
JP2012000654A2012-01-05
Other References:
See also references of EP 3936252A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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