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Title:
HIGH FATIGUE STRENGTH BOLT AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2011122674
Kind Code:
A
Abstract:

To provide a bolt improved in fatigue strength without changing chemical components of the current material or a bolt shape, and a method of manufacturing the same.

The method of manufacturing the high fatigue strength bolt is characterized in that cavitation jet is ejected to a screw trough part from an incomplete screw part to a part where three threads are fitted from a fitted end of the bolt and a nut of a screw part of the bolt.


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Inventors:
SHIRAGAMI TETSUO
KUSAFUKA HIROMICHI
KUROSAWA NOBUTAKA
HAYASHI HIROMASA
Application Number:
JP2009281083A
Publication Date:
June 23, 2011
Filing Date:
December 11, 2009
Export Citation:
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Assignee:
JFE BARS & SHAPES CORP
NIPPON FASTENER KOGYO KK
JFE STEEL CORP
International Classes:
F16B33/06; C21D7/06
Domestic Patent References:
JPH06229409A1994-08-16
JP2009196049A2009-09-03
JP2009241199A2009-10-22
JP2008246638A2008-10-16
JP2007271032A2007-10-18
JPH07180714A1995-07-18
Attorney, Agent or Firm:
Kenichiro Ochiai



 
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