Title:
SHOT PEENING METHOD AND GEAR MATERIAL USING THE SAME
Document Type and Number:
Japanese Patent JP2013220509
Kind Code:
A
Abstract:
To provide a shot peening method capable of excellently improving the tooth flank fatigue strength of a gear material, and to provide a gear material using the same.
In a shot peening method, a shot material having a granular diameter within a range of 0.05-0.3 mm and hardness which is set higher than that of a tooth flank within a range of 50-150 HV is shot, under a condition wherein the air pressure is 0.2-0.6 MPa, to the tooth flank of a gear material having hardness of 750 HV or more in the tooth flank at a depth position of 25 μm from a surface and having a surface roughness Ra in the tooth flank previously set within a range of 0.01-0.4 μm.
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Inventors:
UMEMORI NAOKI
ISHIKURA RYOHEI
ISHIKURA RYOHEI
Application Number:
JP2012093893A
Publication Date:
October 28, 2013
Filing Date:
April 17, 2012
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
B24C1/10; B23F19/00; B24C11/00; C21D7/06; C22C38/00; C22C38/58; C22C38/60
Domestic Patent References:
JP2002309318A | 2002-10-23 | |||
JP2012139790A | 2012-07-26 | |||
JP2003191166A | 2003-07-08 | |||
JPH09296250A | 1997-11-18 | |||
JPS62253723A | 1987-11-05 | |||
JPH04201128A | 1992-07-22 | |||
JPH10217122A | 1998-08-18 | |||
JP2009131912A | 2009-06-18 |
Foreign References:
WO2012017658A1 | 2012-02-09 |
Attorney, Agent or Firm:
Ryuji Harikawa
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