GB1457061A - Method of heat treating steel rail - Google Patents

Method of heat treating steel rail

Info

Publication number
GB1457061A
GB1457061A GB1672474A GB1672474A GB1457061A GB 1457061 A GB1457061 A GB 1457061A GB 1672474 A GB1672474 A GB 1672474A GB 1672474 A GB1672474 A GB 1672474A GB 1457061 A GB1457061 A GB 1457061A
Authority
GB
United Kingdom
Prior art keywords
steel
cooled
steel rail
range
heat treating
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.)
Expired
Application number
GB1672474A
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.)
Bethlehem Steel Corp
Original Assignee
Bethlehem 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
Application filed by Bethlehem Steel Corp filed Critical Bethlehem Steel Corp
Publication of GB1457061A publication Critical patent/GB1457061A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

1457061 Cooling steel rails BETHLEHEM STEEL CORP 17 April 1974 [2 May 1973] 16724/74 Headings C7A and C7N A steel rail containing in percentage by wt:- is hot-rolled above 2000‹F, preferably in the range 2100-2350‹F and is then cooled at 200-600‹F/min from above 1800‹F to a temperature in the range 700-1000‹F whereby there is produced a fine pearlike structure with an interlamellar spacing of less than 1500‹A. Preferably the steel is then cooled at a controlled rate to prevent hydrogen flaking. Suitable apparatus for mounting on the run-out table of the rolling mill includes adjustably spaced side walls 16 in which are mounted coolant nozzles 30 supplied by manifolds 32. In an example the rail is cooled by high-pressure steam.
GB1672474A 1973-05-02 1974-04-17 Method of heat treating steel rail Expired GB1457061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00356535A US3846183A (en) 1973-05-02 1973-05-02 Method of treating steel rail

Publications (1)

Publication Number Publication Date
GB1457061A true GB1457061A (en) 1976-12-01

Family

ID=23401855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1672474A Expired GB1457061A (en) 1973-05-02 1974-04-17 Method of heat treating steel rail

Country Status (7)

Country Link
US (1) US3846183A (en)
JP (1) JPS5047808A (en)
CA (1) CA1024422A (en)
DE (1) DE2421109A1 (en)
FR (1) FR2228112B1 (en)
GB (1) GB1457061A (en)
ZA (1) ZA742497B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118579A (en) * 1982-01-29 1983-11-02 British Steel Corp Heat treatment of rails
USRE40263E1 (en) 1994-11-15 2008-04-29 Nippon Steel Corporation Pearlitic steel rail having excellent wear resistance and method of producing the same

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54148124A (en) * 1978-05-12 1979-11-20 Nippon Steel Corp Manufacture of high strength rall of excellent weldability
US4222260A (en) * 1978-05-15 1980-09-16 Wsp Industries Corporation Warm forging of connecting rod caps
JPS5818966B2 (en) * 1978-06-23 1983-04-15 日本鋼管株式会社 Rail manufacturing method
BE884443A (en) * 1980-07-23 1981-01-23 Centre Rech Metallurgique IMPROVEMENTS IN METHODS OF MANUFACTURING HIGH-STRENGTH RAILS
JPS57198216A (en) * 1981-05-27 1982-12-04 Nippon Kokan Kk <Nkk> Manufacture of high-strength rail
CA1193176A (en) * 1982-07-06 1985-09-10 Robert J. Ackert Method for the production of improved railway rails by accelerated colling in line with the production rolling mill
US4486248A (en) * 1982-08-05 1984-12-04 The Algoma Steel Corporation Limited Method for the production of improved railway rails by accelerated cooling in line with the production rolling mill
LU84417A1 (en) * 1982-10-11 1984-05-10 Centre Rech Metallurgique IMPROVED PROCESS FOR THE MANUFACTURE OF RAILS AND RAILS OBTAINED BY THIS PROCESS
DE3446794C1 (en) * 1984-12-21 1986-01-02 BWG Butzbacher Weichenbau GmbH, 6308 Butzbach Process for the heat treatment of pearlitic rail steel
EP0186373B1 (en) * 1984-12-24 1990-09-12 Nippon Steel Corporation Method of and apparatus for heat treating rails
US4886558A (en) * 1987-05-28 1989-12-12 Nkk Corporation Method for heat-treating steel rail head
US4895605A (en) * 1988-08-19 1990-01-23 Algoma Steel Corporation Method for the manufacture of hardened railroad rails
US7690846B2 (en) * 2002-03-06 2010-04-06 Koyo Seiko Co., Ltd. Bearing device and method of manufacturing the bearing device
CA2451147C (en) * 2002-04-05 2013-07-30 Nippon Steel Corporation Pearlitic steel rail excellent in wear resistance and ductility and method for producing the same
WO2008123483A1 (en) * 2007-03-28 2008-10-16 Jfe Steel Corporation Pearlite steel rail of high internal hardness type excellent in wear resistance and fatigue failure resistance and process for production of the same
CN101743334B (en) * 2007-10-10 2012-04-04 杰富意钢铁株式会社 Internal high hardness type pearlitic rail with excellent wear resistance, rolling contact fatigue resistance, and delayed fracture property and method for producing same
WO2015190088A1 (en) * 2014-06-11 2015-12-17 Ｊｆｅスチール株式会社 Wheel for railroad car and method for manufacturing wheel for railroad car

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2109121A5 (en) * 1970-10-02 1972-05-26 Wendel Sidelor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118579A (en) * 1982-01-29 1983-11-02 British Steel Corp Heat treatment of rails
USRE40263E1 (en) 1994-11-15 2008-04-29 Nippon Steel Corporation Pearlitic steel rail having excellent wear resistance and method of producing the same
USRE41033E1 (en) 1994-11-15 2009-12-08 Nippn Steel Corporation Pearlitic steel rail having excellent wear resistance and method of producing the same
USRE42360E1 (en) 1994-11-15 2011-05-17 Nippon Steel Corporation Pearlitic steel rail having excellent wear resistance and method of producing the same
USRE42668E1 (en) 1994-11-15 2011-09-06 Nippon Steel Corporation Pearlitic steel rail having excellent wear resistance and method of producing the same

Also Published As

Publication number Publication date
FR2228112A1 (en) 1974-11-29
DE2421109A1 (en) 1974-11-21
ZA742497B (en) 1975-04-30
US3846183A (en) 1974-11-05
FR2228112B1 (en) 1978-04-21
AU6800274A (en) 1975-10-23
CA1024422A (en) 1978-01-17
JPS5047808A (en) 1975-04-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee