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Title:
PEARLITE-BASED RAIL HAVING EXCELLENT WEAR RESISTANCE AND DUCTILITY
Document Type and Number:
Japanese Patent JP2010018843
Kind Code:
A
Abstract:

To improve the service life of a rail used for a heavy-load railroad by controlling the components of a rail steel, further controlling an Li oxide (LiO2), so as to improve the wear resistance and ductility of a pearlite texture, and further controlling its hardness.

The pearlite-based rail having excellent wear resistance and ductility is characterized in that, in a steel rail comprising, by mass, 0.65 to 1.20% C, 0.05 to 2.00% Si, 0.05 to 2.00% Mn and 0.0005 to 0.10% Li, and the balance Fe with inevitable impurities, at least a part of the head surface part of the steel rail has a pearlite texture.


Inventors:
UEDA MASAHARU
YAMAMOTO TAKESHI
ONODERA NORIAKI
FURUTA HITOSHI
Application Number:
JP2008180443A
Publication Date:
January 28, 2010
Filing Date:
July 10, 2008
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
C22C38/00; C22C38/04; C22C38/58
Domestic Patent References:
JPS3924209B1
JP2007002294A2007-01-11
JP2006104506A2006-04-20
JPS3924209B1
JP2007002294A2007-01-11
JP2006104506A2006-04-20
Attorney, Agent or Firm:
柳瀬 睦肇
宇都宮 正明
渡部 温