Title:
PEARLITE RAIL
Document Type and Number:
WIPO Patent Application WO/2011/021582
Kind Code:
A1
Abstract:
Provided is a pearlite rail containing, by mass, 0.65-1.20% carbon, 0.05-2.00% silicon, and 0.05-2.00% manganese, with the remainder containing iron and unavoidable impurities. At least part of the head and at least part of the base of the provided rail are pearlite. The aforementioned pearlite regions have a surface hardness between 320 and 500 HV and a maximum surface roughness of at most 180 μm.
Inventors:
UEDA MASAHARU (JP)
SONOYAMA KYOHEI (JP)
TANAHASHI TAKUYA (JP)
MIYAZAKI TERUHISA (JP)
IWANO KATSUYA (JP)
SONOYAMA KYOHEI (JP)
TANAHASHI TAKUYA (JP)
MIYAZAKI TERUHISA (JP)
IWANO KATSUYA (JP)
Application Number:
PCT/JP2010/063760
Publication Date:
February 24, 2011
Filing Date:
August 13, 2010
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
UEDA MASAHARU (JP)
SONOYAMA KYOHEI (JP)
TANAHASHI TAKUYA (JP)
MIYAZAKI TERUHISA (JP)
IWANO KATSUYA (JP)
UEDA MASAHARU (JP)
SONOYAMA KYOHEI (JP)
TANAHASHI TAKUYA (JP)
MIYAZAKI TERUHISA (JP)
IWANO KATSUYA (JP)
International Classes:
C22C38/04; C22C38/00; C22C38/58
Foreign References:
| JP2003293086A | 2003-10-15 | |||
| JP2006057127A | 2006-03-02 | |||
| JP2004346424A | 2004-12-09 | |||
| JPS512616A | 1976-01-10 | |||
| JPH08144016A | 1996-06-04 | |||
| JPH08246100A | 1996-09-24 | |||
| JPH09111352A | 1997-04-28 |
Other References:
YUKITAKA MURAKAMI ET AL.: "Quantitative Evaluation of the Effect of Surface Roughness on Fatigue Strength : Effect of Depth and Pitch of Roughness", TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS, SERIES A, vol. 63, no. 612, 25 August 1997 (1997-08-25), pages 1612 - 1619, XP008147379
See also references of EP 2361995A4
See also references of EP 2361995A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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