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Patent Searching and Data


Title:
BOLT AND PRODUCTION METHOD THEREOF
Document Type and Number:
Japanese Patent JP2015074009
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a bolt and a production method thereof capable of eliminating generation of a mesh-like crystal grain boundary formed of plural granular lumps, suppressing progress inward of corrosion, for example, capable of preventing breakage due to stress concentration.SOLUTION: A wire material piece of aluminum alloy is subjected to forging processing, and the wire material piece which was subjected to forging processing is subjected to solution treatment. Then the wire material piece which was subjected to solution treatment is subjected to form rolling for forming a male screw part, for eliminating generation of a mesh-like crystal grain boundary formed of plural granular lumps.

Inventors:
KASHIWAGI EIJI
WATANABE MASAMI
OSADA NORIYUKI
KOBAYASHI KAZUKI
TSUCHIDA MAKOTO
Application Number:
JP2013211472A
Publication Date:
April 20, 2015
Filing Date:
October 08, 2013
Export Citation:
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Assignee:
SUS CORP
International Classes:
B21H3/02; B21J1/04; B21J5/00; C22C21/10; C22F1/053
Domestic Patent References:
JP2010236665A2010-10-21
JP2011219838A2011-11-04
JPH02294454A1990-12-05
JPH11270531A1999-10-05
JP2013518184A2013-05-20
JPH06185512A1994-07-05
JP2011001602A2011-01-06
JPS62142753A1987-06-26
Foreign References:
US3856584A1974-12-24
Attorney, Agent or Firm:
Miichi Shimano
Torii Yoshimitsu