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EP4023777A4 - Rail et son procédé de fabrication - Google Patents

Rail et son procédé de fabrication 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)
English (en)
Other versions
EP4023777A1 (fr
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/fr
Publication of EP4023777A4 publication Critical patent/EP4023777A4/fr
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
    • C22C38/40—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 et son procédé de fabrication Pending EP4023777A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019187316 2019-10-11
PCT/JP2020/028616 WO2021070452A1 (fr) 2019-10-11 2020-07-27 Rail et son procédé de fabrication

Publications (2)

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

Family

ID=75437831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20874591.9A Pending EP4023777A4 (fr) 2019-10-11 2020-07-27 Rail et son procédé de fabrication

Country Status (7)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024202405A1 (fr) * 2023-03-24 2024-10-03 Ｊｆｅスチール株式会社 Rail et son procédé de fabrication
AU2024245496A1 (en) * 2023-03-24 2025-09-04 Jfe Steel Corporation Rail and method of producing same
WO2024202407A1 (fr) * 2023-03-24 2024-10-03 Ｊｆｅスチール株式会社 Rail et son procédé de fabrication
EP4663799A1 (fr) * 2023-03-24 2025-12-17 JFE Steel Corporation Rail et son procédé de fabrication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685566A1 (fr) * 1993-12-20 1995-12-06 Nippon Steel Corporation Rail a resistance elevee a l'abrasion et a haute tenacite possedant une structure metallographique perlitique et procede de production dudit rail
JP2003293086A (ja) * 2002-04-05 2003-10-15 Nippon Steel Corp 耐摩耗性および延性に優れたパーライト系レール
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 (zh) * 2018-08-27 2018-12-18 攀钢集团攀枝花钢铁研究院有限公司 氧化膜和耐腐蚀钢轨及该钢轨的制备方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947326A (ja) 1982-09-13 1984-03-17 Nippon Steel Corp 耐破端特性の優れた軌条の製造法
JPS6299438A (ja) 1985-10-24 1987-05-08 Nippon Kokan Kk <Nkk> 不安定破壊伝播停止能力を有する耐摩耗性高性能レ−ル
JPH08109440A (ja) * 1994-10-07 1996-04-30 Nippon Steel Corp パーライト金属組織を呈した高靭性レール
JP3081116B2 (ja) * 1994-10-07 2000-08-28 新日本製鐵株式会社 パーライト金属組織を呈した高耐摩耗レール
JPH08246100A (ja) 1995-03-07 1996-09-24 Nippon Steel Corp 耐摩耗性に優れたパーライト系レールおよびその製造法
JP3078461B2 (ja) 1994-11-15 2000-08-21 新日本製鐵株式会社 高耐摩耗パーライト系レール
JPH08246101A (ja) 1995-03-07 1996-09-24 Nippon Steel Corp 耐摩耗性・耐損傷性に優れたパーライト系レールおよびその製造法
JPH10195601A (ja) 1996-12-27 1998-07-28 Nippon Steel Corp 耐摩耗性・耐内部疲労損傷性に優れたパーライト系レールおよびその製造法
JP2001234238A (ja) * 2000-02-18 2001-08-28 Nippon Steel Corp 高耐摩耗・高靭性レールの製造方法
JP4598265B2 (ja) 2000-06-14 2010-12-15 新日本製鐵株式会社 パーライト系レールおよびその製造法
JP3769218B2 (ja) 2001-04-04 2006-04-19 新日本製鐵株式会社 耐摩耗性および延性に優れた低偏析性パーライト系レール
CN1304618C (zh) * 2002-04-05 2007-03-14 新日本制铁株式会社 耐磨性和延性优良的珠光体系钢轨及其制造方法
JP4272410B2 (ja) * 2002-11-12 2009-06-03 新日本製鐵株式会社 パーライトレールの熱処理方法
JP2004043863A (ja) * 2002-07-10 2004-02-12 Nippon Steel Corp レール柱部の初析セメンタイト組織の生成量を低減したレール
JP4214043B2 (ja) * 2003-12-01 2009-01-28 新日本製鐵株式会社 耐摩耗性および延性に優れた高炭素鋼レールの製造方法
JP4736790B2 (ja) * 2005-12-22 2011-07-27 Ｊｆｅスチール株式会社 高強度パーライト系レールおよびその製造方法
JP5145795B2 (ja) * 2006-07-24 2013-02-20 新日鐵住金株式会社 耐摩耗性および延性に優れたパーライト系レールの製造方法
JP5472418B2 (ja) * 2006-07-24 2014-04-16 新日鐵住金株式会社 耐摩耗性および延性に優れたパーライト系レールの製造方法
JP5282506B2 (ja) * 2008-09-25 2013-09-04 Ｊｆｅスチール株式会社 耐摩耗性と耐疲労損傷性に優れた内部高硬度型パーライト鋼レールおよびその製造方法
CN102803536B (zh) * 2009-06-26 2015-01-28 新日铁住金株式会社 延展性优良的珠光体系高碳钢钢轨及其制造方法
JP6137043B2 (ja) * 2014-04-30 2017-05-31 Ｊｆｅスチール株式会社 レールの製造方法
CN104561816B (zh) * 2015-01-07 2016-08-31 攀钢集团攀枝花钢铁研究院有限公司 一种高强度耐疲劳性能优良的钢轨及其生产方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685566A1 (fr) * 1993-12-20 1995-12-06 Nippon Steel Corporation Rail a resistance elevee a l'abrasion et a haute tenacite possedant une structure metallographique perlitique et procede de production dudit rail
JP2003293086A (ja) * 2002-04-05 2003-10-15 Nippon Steel Corp 耐摩耗性および延性に優れたパーライト系レール
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 (zh) * 2018-08-27 2018-12-18 攀钢集团攀枝花钢铁研究院有限公司 氧化膜和耐腐蚀钢轨及该钢轨的制备方法

Non-Patent Citations (1)

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

Also Published As

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

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