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Title:
レール
Document Type and Number:
Japanese Patent JP5482974
Kind Code:
B1
Abstract:
A rail is provided in which in a range from a surface of a head of the rail to a depth of 30 mm, 95% or more of a structure is composed of a pearlite structure by area %, and in a range with a depth of 20 mm to 30 mm from the surface of the head of the rail, an average grain size of a pearlite block in a transverse section is 120 μm to 200 μm.

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Inventors:
Ueda Shoji
Teruhisa Miyazaki
Application Number:
JP2013544893A
Publication Date:
May 07, 2014
Filing Date:
June 13, 2013
Export Citation:
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Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; C21D8/00; C21D9/04; C22C38/04; C22C38/58
Domestic Patent References:
JPH08109439A1996-04-30
JPH0849019A1996-02-20
JPH08246100A1996-09-24
JP2004043865A2004-02-12
Foreign References:
WO2010095354A12010-08-26
WO2011155481A12011-12-15
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata



 
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