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Title:
HOLLOW MEMBER AND METHOD FOR MANUFACTURING HOLLOW MEMBER
Document Type and Number:
WIPO Patent Application WO/2013/038580
Kind Code:
A1
Abstract:
A hollow member formed in a tube-like shape and subjected to a torsional force acting about the center axis of the hollow member is characterized in that a part of the peripheral wall of the hollow member is heated to increase the hardness of the outer side of the peripheral wall to a level higher than the hardness of the outer side of the peripheral wall before the part of the peripheral wall is heated and higher than the hardness of the inner side of the peripheral wall, and in that the hollow member is subjected to partial heat treatment which reduces residual stress in the inner side of the peripheral wall.

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Inventors:
EDAHIRO TAKESHI (JP)
AKUTAGAWA NORIFUMI (JP)
YAMANE KYOTARO (JP)
HIRAOKA TERUHISA (JP)
YASUDA KAZUMI (JP)
ANDO SHIGEAKI (JP)
HASHIMOTO MASARU (JP)
ANDO YUICHI (JP)
TSURUTA TETSUYA (JP)
Application Number:
PCT/JP2012/002781
Publication Date:
March 21, 2013
Filing Date:
April 23, 2012
Export Citation:
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Assignee:
Y TEC CORP (JP)
FUJI GIKEN CO LTD (JP)
EDAHIRO TAKESHI (JP)
AKUTAGAWA NORIFUMI (JP)
YAMANE KYOTARO (JP)
HIRAOKA TERUHISA (JP)
YASUDA KAZUMI (JP)
ANDO SHIGEAKI (JP)
HASHIMOTO MASARU (JP)
ANDO YUICHI (JP)
TSURUTA TETSUYA (JP)
International Classes:
C21D1/09; B60G9/04; C21D1/18; C21D9/08; F16F1/14
Foreign References:
JP2010242164A2010-10-28
JP2007262469A2007-10-11
JP2003154415A2003-05-27
JPS6013045B21985-04-04
JP2008030513A2008-02-14
JP2008030513A2008-02-14
Other References:
See also references of EP 2756971A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
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Claims: