Title:
PULLEY HAVING IMPROVED FATIGUE CHARACTERISTIC, AND FATIGUE CHARACTERISTIC IMPROVING METHOD FOR ITS SHEAVE FACE
Document Type and Number:
Japanese Patent JP2009270589
Kind Code:
A
Abstract:
To provide a pulley having improved pitching fatigue characteristic, and a pitching fatigue characteristic improving method.
The pulley has improved fatigue characteristic, wherein the residual stress of the surface of a sheave face satisfies the following expression (A): (residual stress [MPa])/(surface Vickers hardness Hv.)-1.5, and the average surface roughness of the sheave face is 0.3 m or smaller. The pitching fatigue characteristic improving method is also provided.
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Inventors:
FUJITA TAKASHI
TARUI TOSHIZO
YOSHIDA TAKU
TARUI TOSHIZO
YOSHIDA TAKU
Application Number:
JP2008119143A
Publication Date:
November 19, 2009
Filing Date:
April 30, 2008
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
F16H55/36; C21D7/06; C21D9/00
Domestic Patent References:
| JPH0230437A | 1990-01-31 | |||
| JP2006105352A | 2006-04-20 | |||
| JP2007168048A | 2007-07-05 | |||
| JP2006104552A | 2006-04-20 | |||
| JP2000130527A | 2000-05-12 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu
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