Title:
Manufacturing method of hollow member
Document Type and Number:
Japanese Patent JP6367555
Kind Code:
B2
Abstract:
A tubular hollow member to which torsion about a center line is applied is characterized in performing a partial heat treatment on part of a peripheral wall of the hollow member to make the hardness of an outer portion of the peripheral wall greater than the hardness before heating and greater than the hardness of an inner portion of the peripheral wall, and reduce a residual stress of the inner portion of the peripheral wall.
Inventors:
Takeshi Edahiro
Akutagawa Kibun
Kyotarou Yamane
Teruhisa Hiraoka
Kazumi Yasuda
Seisho Ando
Masaru Hashimoto
Yuichi Ando
Tetsuya Tsuruta
Akutagawa Kibun
Kyotarou Yamane
Teruhisa Hiraoka
Kazumi Yasuda
Seisho Ando
Masaru Hashimoto
Yuichi Ando
Tetsuya Tsuruta
Application Number:
JP2013533458A
Publication Date:
August 01, 2018
Filing Date:
April 23, 2012
Export Citation:
Assignee:
W-Tech Co., Ltd.
Fuji Giken Co., Ltd.
Fuji Giken Co., Ltd.
International Classes:
B60G9/04; C21D1/09; C21D9/08
Domestic Patent References:
JP6052556B2 | ||||
JP6013045B2 | ||||
JP60159121A | ||||
JP2005232586A | ||||
JP2010242164A | ||||
JP2007262469A | ||||
JP2003154415A | ||||
JP200830513A |
Foreign References:
WO2006011540A1 | ||||
WO2010114173A1 |
Attorney, Agent or Firm:
Maeda patent office