Title:
RAIL
Document Type and Number:
WIPO Patent Application WO/2019/189015
Kind Code:
A1
Abstract:
In order to provide a rail in which wear resistance and fatigue damage resistance are effectively enhanced, a surface section extending to a depth of at least 0.5 mm from the surface of a head part of a rail according to the present invention has a metal structure comprising a pearlite structure and a structure other than a pearlite structure, the pearlite structure having a Vickers hardness of 420 HV to 520 HV, and the structure other than a pearlite structure having a Vickers hardness of 350 HV to 420 HV.
Inventors:
HONJO MINORU (JP)
TAKEMASA MINEYASU (JP)
TAKEMASA MINEYASU (JP)
Application Number:
PCT/JP2019/012568
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/18; C22C38/60; C21D8/00
Domestic Patent References:
| WO2015182759A1 | 2015-12-03 | |||
| WO2011155481A1 | 2011-12-15 |
Foreign References:
| JP2002363698A | 2002-12-18 | |||
| JP4805414B2 | 2011-11-02 | |||
| JPS4938158B1 | 1974-10-15 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF: