EP1432835B1 - Verfahren zur thermischen behandlung von schienen - Google Patents

Verfahren zur thermischen behandlung von schienen Download PDF

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Publication number
EP1432835B1
EP1432835B1 EP02777151A EP02777151A EP1432835B1 EP 1432835 B1 EP1432835 B1 EP 1432835B1 EP 02777151 A EP02777151 A EP 02777151A EP 02777151 A EP02777151 A EP 02777151A EP 1432835 B1 EP1432835 B1 EP 1432835B1
Authority
EP
European Patent Office
Prior art keywords
cooling
rail
temperature
rail head
rails
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 - Lifetime
Application number
EP02777151A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1432835A2 (de
Inventor
Klaus Küppers
Meinert Meyer
Thomas Nerzak
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.)
SMS Group GmbH
Original Assignee
SMS Meer GmbH
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 SMS Meer GmbH filed Critical SMS Meer GmbH
Publication of EP1432835A2 publication Critical patent/EP1432835A2/de
Application granted granted Critical
Publication of EP1432835B1 publication Critical patent/EP1432835B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for 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
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment

Definitions

  • the invention relates to a method for the thermal treatment of rails, in particular of hot-rolled rail or railway rails with profile parts different mass, the rails from the rolling heat through a targeted thermal treatment and cooling in the profile parts in the profile area, in particular obtained in the rail head, a desired texture with increased strength.
  • the rail head first in the passage in sufficient depth up to 50 mm by means of burner or induction heating to an austenitizing temperature of 950 to 1050 ° C, then with compressed air, the rail head in a first cooling stage within from 10 to 20 seconds to 650 to 600 ° C before the area of pearlite conversion to cool and in a second cooling stage with respect to the first stage throttled Air volume within 2 to 4 minutes to about 400 ° C until the end the Perlitumwandlung to form a fine-lamellar pearlitic structure cool. Subsequently, the rail head is again set to 600 to 650 ° C for heated for a period of 4 to 6 minutes and then quickly to below 100 ° C. deterred.
  • a method Specify through which a targeted thermal treatment specifically during the cooling of the rail head allows and with simple means Microstructure is produced, which has a fine-lamellar perlite, which is characterized by a certain hardness level and associated with a high resistance to abrasion characterized and wherein during the cooling process in particular in the Edge zones of the rail head no bainite arises.
  • the cooling section would have to be operated with a significantly lower heat flux density, or the heat transfer coefficient to be set would be about 30 to 40% lower in order to avoid bainite formation in the edge zones of the rail head.
  • the heat transfer coefficient to be set would be about 30 to 40% lower in order to avoid bainite formation in the edge zones of the rail head.
  • the targeted pre-cooling to a core temperature of the rail head from 750 to 850 ° C can according to the invention by cooling in air with natural convection or forced with the help of fans. But it is also possible with To cool the help of nozzles with a water-air mixture (aerosol cooling), this cooling preferably on a cross tractor with appropriate Number of moorings is made.
  • the surface temperature becomes the rail head center measured without contact using a pyrometer.
  • the boundary zone temperature determined here then depends on the type of cooling and intensity about 30 to 60 ° C below the still existing Kemtemperatur.
  • the temperature of Rail head during the entire thermal treatment starting from entering the Vorkssel issued until leaving the Fertigkühl issued measured.
  • the measured values are transferred to a measuring and control device fed and serve to control the individual process steps to be performed, including heating upstream of the final cooling.
  • FIG. 1 shows the cross section of a rail 1.
  • the rail 1 is made from profile parts of different mass, the rail head 2 with edge zone 5 and Core zone 6, the middle part 3 and the rail foot 4.
  • the edge zone 5 of the rail head Fig. 2 is shown in phantom in Fig. 1; it is the area that is primarily through targeted thermal treatment converted into a fine-lamellar pearlite structure is to be, without that in the thermal treatment in this edge zone or 5 bainite is created in this area.
  • FIG 2 is a schematic system 10 for carrying out the thermal Treatment according to the invention shown.
  • the plant 10 is - in the rolling line x-x behind the last rolling mill 11 arranged one behind the other - from a Pre-cooling device 12, a preferably inductive heating device 13 and a Fertigkühl Surprise 14, of the rail 1 after its exit from the Roll stand 11 are passed through one after the other.
  • the control of the thermal Treatment - includes the intensity of cooling or heating as well the flow rate through the individual system parts 12, 13, 14, happens depending on the respective measured temperature by a measuring and control device 15, which via corresponding lines 16, 17, 18 for the Temperature measured values and the control signals with the respective installation parts 12, 13, 14 are connected.
  • thermo treatment plant can Of course, depending on the type and size of the rails and the type of the selected Pre - and final cooling as well as the scope of the measuring and control device be varied as far as compliance with the arranged one behind the other process steps of the invention is fully preserved content.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP02777151A 2001-09-29 2002-09-19 Verfahren zur thermischen behandlung von schienen Expired - Lifetime EP1432835B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10148305A DE10148305A1 (de) 2001-09-29 2001-09-29 Verfahren und Anlage zur thermischen Behandlung von Schienen
DE10148305 2001-09-29
PCT/EP2002/010512 WO2003028912A2 (de) 2001-09-29 2002-09-19 Verfahren und anlage zur thermischen behandlung von schienen

Publications (2)

Publication Number Publication Date
EP1432835A2 EP1432835A2 (de) 2004-06-30
EP1432835B1 true EP1432835B1 (de) 2005-06-08

Family

ID=7700912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02777151A Expired - Lifetime EP1432835B1 (de) 2001-09-29 2002-09-19 Verfahren zur thermischen behandlung von schienen

Country Status (10)

Country Link
US (1) US7416622B2 (ru)
EP (1) EP1432835B1 (ru)
JP (1) JP4317749B2 (ru)
CN (1) CN1263873C (ru)
AT (1) ATE297474T1 (ru)
AU (1) AU2002338735A1 (ru)
DE (2) DE10148305A1 (ru)
ES (1) ES2243768T3 (ru)
RU (1) RU2272080C2 (ru)
WO (1) WO2003028912A2 (ru)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030699B4 (de) * 2006-06-30 2014-10-02 Daimler Ag Gegossener Stahlkolben für Verbrennungsmotoren
CN100482812C (zh) * 2006-09-12 2009-04-29 攀枝花钢铁(集团)公司 钢轨热处理方法及钢轨热处理机组
ITMI20072244A1 (it) * 2007-11-28 2009-05-29 Danieli Off Mecc Dispositivo per trattamento termico di rotaie e relativo processo
JP4757957B2 (ja) * 2008-10-31 2011-08-24 新日本製鐵株式会社 耐摩耗性および靭性に優れたパーライト系レール
CN102301023B (zh) * 2009-02-18 2013-07-10 新日铁住金株式会社 耐磨损性及韧性优异的珠光体系钢轨
BRPI1011986A2 (pt) 2009-06-26 2016-04-26 Nippon Steel Corp trilho de aço com alto teor de carbono com base em perlita tendo excelente ductilidade e processo para a produção deste
WO2011153530A2 (en) * 2010-06-04 2011-12-08 Csx Transportation Process and apparatus for rail restoration and rail manufacture using welding
RU2447163C1 (ru) 2010-08-10 2012-04-10 Общество С Ограниченной Ответственностью "Исследовательско-Технологический Центр "Аусферр" Способ термической обработки изделий из сплавов на основе железа (варианты)
RU2487177C2 (ru) * 2011-07-28 2013-07-10 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Способ и установка термической обработки рельсов
RU2484148C1 (ru) * 2011-10-27 2013-06-10 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Способ и установка термической обработки рельсов
CN105074019B (zh) * 2013-03-28 2017-03-08 杰富意钢铁株式会社 钢轨的制造方法和制造装置
JP6311678B2 (ja) * 2014-09-24 2018-04-18 Ｊｆｅスチール株式会社 レールの製造方法および製造装置
US10286460B2 (en) 2017-04-07 2019-05-14 Robert J. Murphy Single-pass, single-radial layer, circumferential-progression fill-welding system, apparatus and method for refurbishing railway and other transit rails
CN107520529B (zh) * 2017-08-31 2019-10-11 攀钢集团研究院有限公司 136re+ss热处理钢轨移动闪光焊接的方法
CN113403466A (zh) * 2021-05-20 2021-09-17 包头钢铁（集团）有限责任公司 一种消除钢轨脱碳层组织异常的生产方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US468788A (en) * 1892-02-16 Apparatus for cooling steel rails and bars
JPS54148124A (en) * 1978-05-12 1979-11-20 Nippon Steel Corp Manufacture of high strength rall of excellent weldability
DE3006695C2 (de) 1980-02-22 1988-12-01 Klöckner-Werke AG, 4100 Duisburg Verfahren zum Wärmebehandeln von Schienen
JPS57137425A (en) 1981-02-17 1982-08-25 Nippon Steel Corp Uniform cooling method for rail head part heated to high temperature
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
DE3446794C1 (de) 1984-12-21 1986-01-02 BWG Butzbacher Weichenbau GmbH, 6308 Butzbach Verfahren zur Waermebehandlung perlitischer Schienenstaehle
JPH0730401B2 (ja) * 1986-11-17 1995-04-05 日本鋼管株式会社 靭性の優れた高強度レ−ルの製造方法
DE4237991A1 (de) 1992-11-11 1994-05-19 Schloemann Siemag Ag Verfahren und Vorrichtung zur Abkühlung von warmgewalzten Profilen insbesondere von Schienen
AU663023B2 (en) * 1993-02-26 1995-09-21 Nippon Steel Corporation Process for manufacturing high-strength bainitic steel rails with excellent rolling-contact fatigue resistance
AT402941B (de) 1994-07-19 1997-09-25 Voest Alpine Schienen Gmbh Verfahren und vorrichtung zur wärmebehandlung von profiliertem walzgut
JPH08252602A (ja) 1995-03-15 1996-10-01 Nippon Steel Corp 頭部内部疲労損傷性に優れた高強度レールの製造方法

Also Published As

Publication number Publication date
US20040231763A1 (en) 2004-11-25
ES2243768T3 (es) 2005-12-01
ATE297474T1 (de) 2005-06-15
AU2002338735A1 (en) 2003-04-14
DE10148305A1 (de) 2003-04-24
WO2003028912A2 (de) 2003-04-10
CN1263873C (zh) 2006-07-12
JP4317749B2 (ja) 2009-08-19
US7416622B2 (en) 2008-08-26
JP2005504174A (ja) 2005-02-10
EP1432835A2 (de) 2004-06-30
DE50203370D1 (de) 2005-07-14
RU2004113116A (ru) 2005-05-20
CN1561399A (zh) 2005-01-05
WO2003028912A3 (de) 2003-09-12
RU2272080C2 (ru) 2006-03-20

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