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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 (5-2, Sobiraki-cho, Niihama-sh, Ehime 88, 〒7928588, JP)
ISHIZUKA Masayuki (5-2, Sobiraki-cho, Niihama-sh, Ehime 88, 〒7928588, JP)
UENO Norieda (1-1, Osaki 2-chome, Shinagawa-k, Tokyo 25, 〒1416025, JP)
NOGIWA Kimihiro (5-2, Sobiraki-cho, Niihama-sh, Ehime 88, 〒7928588, 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, LTD. (1-1 Osaki 2-chome, Shinagawa-ku Tokyo, 25, 〒1416025, JP)
International Classes:
B21D26/047; B21D37/16; B21D51/16
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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