EP4023777A4 - Rail and method for manufacturing same - Google Patents

Rail and method for manufacturing same Download PDF

Info

Publication number
EP4023777A4
EP4023777A4 EP20874591.9A EP20874591A EP4023777A4 EP 4023777 A4 EP4023777 A4 EP 4023777A4 EP 20874591 A EP20874591 A EP 20874591A EP 4023777 A4 EP4023777 A4 EP 4023777A4
Authority
EP
European Patent Office
Prior art keywords
rail
manufacturing same
manufacturing
same
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20874591.9A
Other languages
German (de)
French (fr)
Other versions
EP4023777A1 (en
Inventor
Kazuya Tokunaga
Keisuke Ando
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=75437831&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP4023777(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP4023777A1 publication Critical patent/EP4023777A1/en
Publication of EP4023777A4 publication Critical patent/EP4023777A4/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP20874591.9A 2019-10-11 2020-07-27 Rail and method for manufacturing same Pending EP4023777A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019187316 2019-10-11
PCT/JP2020/028616 WO2021070452A1 (en) 2019-10-11 2020-07-27 Rail and method for manufacturing same

Publications (2)

Publication Number Publication Date
EP4023777A1 EP4023777A1 (en) 2022-07-06
EP4023777A4 true EP4023777A4 (en) 2023-03-01

Family

ID=75437831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20874591.9A Pending EP4023777A4 (en) 2019-10-11 2020-07-27 Rail and method for manufacturing same

Country Status (7)

Country Link
US (1) US20230250505A1 (en)
EP (1) EP4023777A4 (en)
JP (1) JP7063400B2 (en)
CN (1) CN114502761B (en)
AU (1) AU2020364505B2 (en)
CA (1) CA3157401C (en)
WO (1) WO2021070452A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685566A1 (en) * 1993-12-20 1995-12-06 Nippon Steel Corporation Rail of high abrasion resistance and high tenacity having pearlite metallographic structure and method of manufacturing the same
JP2003293086A (en) * 2002-04-05 2003-10-15 Nippon Steel Corp Pearlitic rail having excellent wear resistance and ductility
US20150152516A1 (en) * 2012-04-25 2015-06-04 Jfe Steel Corporation Pearlite rail, flash butt welding method for pearlite rail, and method of manufacturing pearlite rail
CN109023058A (en) * 2018-08-27 2018-12-18 攀钢集团攀枝花钢铁研究院有限公司 The preparation method of oxidation film and corrosion resistant steel and the rail

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947326A (en) 1982-09-13 1984-03-17 Nippon Steel Corp Production of rail having excellent resistance to edge rupture
JPS6299438A (en) 1985-10-24 1987-05-08 Nippon Kokan Kk <Nkk> Wear-resistant high-efficiency rail having instable fracture propagation stopping capacity
JP3081116B2 (en) 1994-10-07 2000-08-28 新日本製鐵株式会社 High wear resistant rail with pearlite metal structure
JPH08109440A (en) * 1994-10-07 1996-04-30 Nippon Steel Corp High toughness rail with pearlitic metallic structure
JPH08246101A (en) 1995-03-07 1996-09-24 Nippon Steel Corp Pearlitic rail excellent in wear resistance and damage resistance and its production
JP3078461B2 (en) 1994-11-15 2000-08-21 新日本製鐵株式会社 High wear-resistant perlite rail
JPH08246100A (en) 1995-03-07 1996-09-24 Nippon Steel Corp Pearlitic rail excellent in wear resistance and its production
JPH10195601A (en) 1996-12-27 1998-07-28 Nippon Steel Corp Pearlitic steel rail excellent in wear resistance and internal fatigue fracture resistance and manufacture therefor
JP2001234238A (en) * 2000-02-18 2001-08-28 Nippon Steel Corp Producing method for highly wear resistant and high toughness rail
JP4598265B2 (en) 2000-06-14 2010-12-15 新日本製鐵株式会社 Perlite rail and its manufacturing method
JP3769218B2 (en) * 2001-04-04 2006-04-19 新日本製鐵株式会社 Low segregation pearlite rail with excellent wear resistance and ductility
CN1304618C (en) * 2002-04-05 2007-03-14 新日本制铁株式会社 Pealite based rail excellent in wear resistance and ductility and method for production thereof
JP4272410B2 (en) * 2002-11-12 2009-06-03 新日本製鐵株式会社 Heat treatment method for pearlite rail
JP2004043863A (en) * 2002-07-10 2004-02-12 Nippon Steel Corp Rail having reduced amount of pro-eutectoid cementite structure formed in rail column section
JP4214043B2 (en) * 2003-12-01 2009-01-28 新日本製鐵株式会社 Method for producing high carbon steel rails with excellent wear resistance and ductility
JP4736790B2 (en) * 2005-12-22 2011-07-27 Ｊｆｅスチール株式会社 High-strength pearlite rail and manufacturing method thereof
JP5472418B2 (en) * 2006-07-24 2014-04-16 新日鐵住金株式会社 Method for producing pearlitic rails with excellent wear resistance and ductility
JP5145795B2 (en) * 2006-07-24 2013-02-20 新日鐵住金株式会社 Method for producing pearlitic rails with excellent wear resistance and ductility
JP5282506B2 (en) * 2008-09-25 2013-09-04 Ｊｆｅスチール株式会社 Internal high hardness type pearlitic steel rail with excellent wear resistance and fatigue damage resistance and method for manufacturing the same
CN102803536B (en) * 2009-06-26 2015-01-28 新日铁住金株式会社 Pearlite-based high-carbon steel rail having excellent ductility and process for production thereof
JP6137043B2 (en) * 2014-04-30 2017-05-31 Ｊｆｅスチール株式会社 Rail manufacturing method
CN104561816B (en) * 2015-01-07 2016-08-31 攀钢集团攀枝花钢铁研究院有限公司 The rail of a kind of high-strength, fatigue-resistant function admirable and production method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685566A1 (en) * 1993-12-20 1995-12-06 Nippon Steel Corporation Rail of high abrasion resistance and high tenacity having pearlite metallographic structure and method of manufacturing the same
JP2003293086A (en) * 2002-04-05 2003-10-15 Nippon Steel Corp Pearlitic rail having excellent wear resistance and ductility
US20150152516A1 (en) * 2012-04-25 2015-06-04 Jfe Steel Corporation Pearlite rail, flash butt welding method for pearlite rail, and method of manufacturing pearlite rail
CN109023058A (en) * 2018-08-27 2018-12-18 攀钢集团攀枝花钢铁研究院有限公司 The preparation method of oxidation film and corrosion resistant steel and the rail

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021070452A1 *

Also Published As

Publication number Publication date
AU2020364505A1 (en) 2022-04-28
CA3157401C (en) 2024-04-09
CN114502761B (en) 2024-01-09
AU2020364505B2 (en) 2023-08-03
JP7063400B2 (en) 2022-05-09
JPWO2021070452A1 (en) 2021-10-21
CN114502761A (en) 2022-05-13
CA3157401A1 (en) 2021-04-15
US20230250505A1 (en) 2023-08-10
EP4023777A1 (en) 2022-07-06
WO2021070452A1 (en) 2021-04-15

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RIC1 Information provided on ipc code assigned before grant

Ipc: B21B 1/085 20060101ALI20230124BHEP

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