AU2015205937B2 - Pearlitic steel rail with high strength and toughness and producing method thereof - Google Patents

Pearlitic steel rail with high strength and toughness and producing method thereof

Info

Publication number
AU2015205937B2
AU2015205937B2 AU2015205937A AU2015205937A AU2015205937B2 AU 2015205937 B2 AU2015205937 B2 AU 2015205937B2 AU 2015205937 A AU2015205937 A AU 2015205937A AU 2015205937 A AU2015205937 A AU 2015205937A AU 2015205937 B2 AU2015205937 B2 AU 2015205937B2
Authority
AU
Australia
Prior art keywords
steel rail
toughness
pearlitic
producing method
high strength
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.)
Active
Application number
AU2015205937A
Other versions
AU2015205937A1 (en
Inventor
Yong Deng
Hua Guo
Zhenyu Han
Dadong Li
Gongming Tao
Ming Zou
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.)
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Original Assignee
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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 Pangang Group Panzhihua Steel and Vanadium Co Ltd, Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd filed Critical Pangang Group Panzhihua Steel and Vanadium Co Ltd
Publication of AU2015205937A1 publication Critical patent/AU2015205937A1/en
Application granted granted Critical
Publication of AU2015205937B2 publication Critical patent/AU2015205937B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Abstract

The present invention relates to steel making field, and in particular discloses a pearlitic steel rail with high strength and toughness and a producing method thereof. The producing method comprises: controlling the following processing conditions in a rolling 5 procedure to produce the pearlitic steel rail with high strength and toughness: initial rolling temperature of 1,120-1,180'C, final rolling temperature of 840-880'C, rail profile reduction in last two rolling passes of 6%-12%; the steel rail is cooled to 600'C or lower at a cooling rate <2. 0 C/s after final rolling, and then air-cooled to room temperature; the chemical composition of the steel rail meets the following requirements: C: 0.75%-0.84%, Si: 10 0.30%-0.80%, Mn: 0.50%-1.50%, V: 0.04%-0.12%, Ti: 0.004%-0.02%, and 0.10%V+1OTi0.25%, [N]<30ppm, P<0.020%, S0.008%, with the remaining content consisting of Fe and inevitable impurities. The steel rail obtained by the method of the present invention has significantly refined pearlitic grains, tensile strength>1,00OMPa, and specific elongation>14%, and has high overall properties of strength and toughness. 6726511_1 (GHMatters) P100500.AU LYNT
AU2015205937A 2014-09-02 2015-07-24 Pearlitic steel rail with high strength and toughness and producing method thereof Active AU2015205937B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410443977.0 2014-09-02
CN201410443977.0A CN104195433B (en) 2014-09-02 2014-09-02 A kind of high-strength tenacity pearlite steel rail and production method thereof

Publications (2)

Publication Number Publication Date
AU2015205937A1 AU2015205937A1 (en) 2016-03-17
AU2015205937B2 true AU2015205937B2 (en) 2016-07-28

Family

ID=52080794

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2015205937A Active AU2015205937B2 (en) 2014-09-02 2015-07-24 Pearlitic steel rail with high strength and toughness and producing method thereof

Country Status (4)

Country Link
US (1) US20160060736A1 (en)
CN (1) CN104195433B (en)
AU (1) AU2015205937B2 (en)
BR (1) BR102015020622A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2946541C (en) * 2014-05-29 2018-12-04 Nippon Steel & Sumitomo Metal Corporation Rail and production method therefor
CN104820729B (en) * 2015-03-13 2018-05-25 攀钢集团攀枝花钢钒有限公司 The temperature inheritance method of the full rolling process simulation analysis of rail
CN106086663B (en) * 2016-07-14 2018-03-06 攀钢集团攀枝花钢铁研究院有限公司 A kind of hypereutectoid rail and preparation method thereof
CN106636916A (en) * 2016-11-30 2017-05-10 内蒙古包钢钢联股份有限公司 Rolled steel for steel rails of America railways and production method of rolled steel
CN106636954A (en) * 2016-11-30 2017-05-10 内蒙古包钢钢联股份有限公司 Steel rail for American railway and production method thereof
CN110468347B (en) * 2019-09-02 2021-07-06 鞍钢股份有限公司 Bainite steel rail with high strength and toughness and manufacturing method thereof
CN112195413A (en) * 2020-10-19 2021-01-08 攀钢集团攀枝花钢铁研究院有限公司 Fatigue-resistant steel rail of freeze-thaw circulating line and production method thereof
CN113774283B (en) * 2021-09-14 2022-09-16 鞍钢股份有限公司 High-toughness plastic steel rail for high-speed railway non-small-radius curve and production method thereof
CN114855082B (en) * 2022-04-26 2023-06-20 包头钢铁（集团）有限责任公司 Manufacturing method for improving low-temperature toughness of hot-rolled U75V steel rail by rare earth elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040035507A1 (en) * 2002-08-26 2004-02-26 Cordova J. Vincent Carbon-titanium steel rail
US20040187981A1 (en) * 2002-04-05 2004-09-30 Masaharu Ueda Pealite base rail excellent in wear resistance and ductility and method for production thereof
US20110253268A1 (en) * 2010-04-16 2011-10-20 Pangang Group Co., Ltd. High carbon content and high strength heat-treated steel rail and method for producing the same
WO2013079438A1 (en) * 2011-11-28 2013-06-06 Tata Steel Uk Ltd Rail steel with an excellent combination of wear properties, rolling contact fatigue resistance and weldability
US20130193223A1 (en) * 2010-09-02 2013-08-01 Pangang Group Panzhihua Steel & Vanadium Co. Ltd Steel rail for high speed and quasi-high speed railways and method of manufacturing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2679556C (en) * 2007-03-28 2013-05-28 Jfe Steel Corporation Internal high hardness type pearlitic rail with excellent wear resistance and rolling contact fatigue resistance and method for producing same
JP5453624B2 (en) * 2009-10-16 2014-03-26 Ｊｆｅスチール株式会社 Perlite steel rail with excellent crack resistance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040187981A1 (en) * 2002-04-05 2004-09-30 Masaharu Ueda Pealite base rail excellent in wear resistance and ductility and method for production thereof
US20040035507A1 (en) * 2002-08-26 2004-02-26 Cordova J. Vincent Carbon-titanium steel rail
US20110253268A1 (en) * 2010-04-16 2011-10-20 Pangang Group Co., Ltd. High carbon content and high strength heat-treated steel rail and method for producing the same
US20130193223A1 (en) * 2010-09-02 2013-08-01 Pangang Group Panzhihua Steel & Vanadium Co. Ltd Steel rail for high speed and quasi-high speed railways and method of manufacturing the same
WO2013079438A1 (en) * 2011-11-28 2013-06-06 Tata Steel Uk Ltd Rail steel with an excellent combination of wear properties, rolling contact fatigue resistance and weldability

Also Published As

Publication number Publication date
CN104195433B (en) 2016-08-31
US20160060736A1 (en) 2016-03-03
CN104195433A (en) 2014-12-10
AU2015205937A1 (en) 2016-03-17
BR102015020622A2 (en) 2016-05-31

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