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Title:
MOLDING DEVICE, MOLDING METHOD, AND METAL PIPE
Document Type and Number:
WIPO Patent Application WO/2019/171868
Kind Code:
A1
Abstract:
This molding device causes a metal pipe material to expand and molds a metal pipe having a pipe section and flange sections. The molding device is provided with a hardness-reducing section that reduces the hardness of the flange sections so as to be less than that of the pipe section.

Inventors:
IDE AKIHIRO (JP)
ISHIZUKA MASAYUKI (JP)
UENO NORIEDA (JP)
NOGIWA KIMIHIRO (JP)
Application Number:
JP2019/004280
Publication Date:
September 12, 2019
Filing Date:
February 06, 2019
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
B21D26/047; B21D37/16; B21D51/16
Domestic Patent References:
WO2009014233A12009-01-29
WO2016088665A12016-06-09
WO2017190220A12017-11-09
Foreign References:
JP2016002577A2016-01-12
JP2006061944A2006-03-09
JP2006104527A2006-04-20
JP2005262232A2005-09-29
JP2016190248A2016-11-10
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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