Internal high hardness type pearlitic rail with excellent wear resistance, rolling contact fatigue resistance, and delayed fracture property and method for producing same

Details for Australian Patent Application No. 2008310503 (hide)

Owner JFE STEEL CORPORATION

Inventors Kimura, Tatsumi; Nishimura, Kimihiro; Shikanai, Nobuo; Suzuki, Shinichi; Honjo, Minoru

Agent Griffith Hack

Pub. Number AU-B-2008310503

PCT Pub. Number WO2009/047926

Priority 2007-264826 10.10.07 JP

Filing date 25 March 2008

Wipo publication date 16 April 2009

Acceptance publication date 9 December 2010

International Classifications

C22C 38/00 (2006.01) Ferrous alloys, e.g. steel alloys

B21B 1/085 (2006.01) Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section

B21B 3/00 (2006.01) Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences

C21D 8/00 (2006.01) Modifying the physical properties by deformation combined with, or followed by, heat treatment

C21D 9/04 (2006.01) Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles - for rails

C22C 38/24 (2006.01) Ferrous alloys, e.g. steel alloys - with vanadium

C22C 38/48 (2006.01) Ferrous alloys, e.g. steel alloys - with niobium or tantalum

Event Publications

14 January 2010 PCT application entered the National Phase

  PCT publication WO2009/047926 Priority application(s): WO2009/047926

21 January 2010 Amendment Made

  The nature of the amendment is: Amend the invention title to read Internal high hardness type pearlitic rail with excellent wear resistance, rolling contact fatigue resistance, and delayed fracture property and method for producing same

9 December 2010 Application Accepted

  Published as AU-B-2008310503

7 April 2011 Standard Patent Sealed

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