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EP0187904A3 - Method of heat treating pearlitic rail steels - Google Patents

Method of heat treating pearlitic rail steels Download PDF

Info

Publication number
EP0187904A3
EP0187904A3 EP85113653A EP85113653A EP0187904A3 EP 0187904 A3 EP0187904 A3 EP 0187904A3 EP 85113653 A EP85113653 A EP 85113653A EP 85113653 A EP85113653 A EP 85113653A EP 0187904 A3 EP0187904 A3 EP 0187904A3
Authority
EP
European Patent Office
Prior art keywords
head portion
cooled
temperature
rail head
pearlitic
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.)
Granted
Application number
EP85113653A
Other languages
German (de)
Other versions
EP0187904B1 (en
EP0187904A2 (en
Inventor
Wilhelm Dr.-Ing. Heller
Jurgen Dr.-Ing. Flugge
Gerhard Ratz
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.)
Voestalpine Turnout Technology Germany GmbH
Original Assignee
Krupp Stahl AG
Butzbacher Weichenbau 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 Krupp Stahl AG, Butzbacher Weichenbau GmbH filed Critical Krupp Stahl AG
Priority to AT85113653T priority Critical patent/ATE56226T1/en
Publication of EP0187904A2 publication Critical patent/EP0187904A2/en
Publication of EP0187904A3 publication Critical patent/EP0187904A3/en
Application granted granted Critical
Publication of EP0187904B1 publication Critical patent/EP0187904B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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

Landscapes

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

Abstract

The present invention relates to a method for thermal treatment of pearlitic rail steel. For increasing strength and wear resistance steels with the claimed composition are produced with a fine lamellar pearlite structure by heat treatment. During the first cycle the rail head portion is heated in a sufficient depth of up to 50 mm by means of a burner or an inductive system to an austenitization temperature of about 950 DEG to 1050 DEG C. Thereafter the heated head portion is cooled by means of compressed air in such a way that in a first step by blowing a large amount of air the temperature of the rail head portion is cooled within 10 to 20 s to 650 DEG to 600 DEG C. before the area of the pearlitic transformation. In a second step with throttled blowing compared to the first step in the area of the pearlitic transformation the rail head portion is cooled within 2 to 4 minutes to about 400 DEG C. until finishing the pearlitic transformation. Then the rail head portion is again heated for 4 to 6 minutes to a temperature of about 600 DEG to 650 DEG C. and then rapidly cooled by means of water or other appropriate quenching media to a temperature of less than 100 DEG C.
EP85113653A 1984-12-21 1985-10-26 Method of heat treating pearlitic rail steels Expired - Lifetime EP0187904B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113653T ATE56226T1 (en) 1984-12-21 1985-10-26 PROCESS FOR THE HEAT TREATMENT OF PEARLITIC RAIL STEELS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3446794A DE3446794C1 (en) 1984-12-21 1984-12-21 Process for the heat treatment of pearlitic rail steel
DE3446794 1984-12-21

Publications (3)

Publication Number Publication Date
EP0187904A2 EP0187904A2 (en) 1986-07-23
EP0187904A3 true EP0187904A3 (en) 1989-07-19
EP0187904B1 EP0187904B1 (en) 1990-09-05

Family

ID=6253499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113653A Expired - Lifetime EP0187904B1 (en) 1984-12-21 1985-10-26 Method of heat treating pearlitic rail steels

Country Status (6)

Country Link
US (1) US4714500A (en)
EP (1) EP0187904B1 (en)
JP (1) JPS61157636A (en)
AT (1) ATE56226T1 (en)
CA (1) CA1256004A (en)
DE (2) DE3446794C1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU86510A1 (en) * 1986-07-10 1988-02-02 Centre Rech Metallurgique METHOD AND DEVICE FOR MANUFACTURING A HIGH RESISTANCE RAIL
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
DE4200545A1 (en) * 1992-01-11 1993-07-15 Butzbacher Weichenbau Gmbh TRACK PARTS AND METHOD FOR THE PRODUCTION THEREOF
RU2107740C1 (en) * 1993-12-20 1998-03-27 Ниппон Стил Корпорейшн Railroad rail from perlitic steel with high resistance to wear and high impact strength and method of its production
AT402941B (en) 1994-07-19 1997-09-25 Voest Alpine Schienen Gmbh METHOD AND DEVICE FOR THE HEAT TREATMENT OF PROFILED ROLLING MATERIAL
IN191289B (en) 1994-07-19 2003-11-01 Voest Alpine Schienen Gmbh
IT1274607B (en) * 1994-08-09 1997-07-18 Lovere Sidermeccanica Spa STEELS FOR WHEEL RIMS AND SINGLE-WHEEL WHEELS FOR THE RAILWAY SECTOR AND SIMILAR
CN1044826C (en) * 1994-11-15 1999-08-25 新日本制铁株式会社 Perlite rail of high abrasion resistance and method of mfg. the same
CN1044723C (en) * 1996-09-27 1999-08-18 攀枝花钢铁（集团）公司钢铁研究院 Heat treatment method for vanadium-contained alloy steel rail
JP3478174B2 (en) * 1999-06-02 2003-12-15 Ｊｆｅスチール株式会社 Pearlitic steel rail with excellent wear resistance and ductility
DE10148305A1 (en) * 2001-09-29 2003-04-24 Sms Meer Gmbh Process and plant for the thermal treatment of rails
EP1348770A1 (en) * 2002-03-19 2003-10-01 E.C.O. Trading LLC Plant and procedure for the production of small parts in hot formed steel
JP5761116B2 (en) 2012-04-27 2015-08-12 新日鐵住金株式会社 Wheel steel
WO2016027467A1 (en) * 2014-08-20 2016-02-25 Ｊｆｅスチール株式会社 Heat treatment rail manufacturing method and manufacturing apparatus
US10400320B2 (en) 2015-05-15 2019-09-03 Nucor Corporation Lead free steel and method of manufacturing
MX2018006811A (en) * 2015-12-04 2018-11-09 Arconic Inc METHODS FOR COOLING AN ELECTRICALLY DRIVING SHEET DURING THERMAL TREATMENT BY TRANSVERSAL FLOW INDUCTION.
CN117483561A (en) * 2018-08-08 2024-02-02 宝山钢铁股份有限公司 Method for manufacturing hot-stamped component with aluminum-silicon alloy coating and hot-stamped component
CN109207691A (en) * 2018-10-30 2019-01-15 攀钢集团攀枝花钢铁研究院有限公司 The production method of heavy haul railway rail
CN112011680B (en) * 2020-07-28 2022-04-26 马鞍山钢铁股份有限公司 Intermittent quenching method for railway wheels
CN112410648B (en) * 2020-10-13 2021-12-28 攀钢集团攀枝花钢铁研究院有限公司 High-density pearlite steel rail and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255689B (en) * 1962-10-12 1967-12-07 United States Steel Corp Process for the heat treatment of rail head surfaces
DE2113418A1 (en) * 1970-03-20 1971-10-07 British Railways Board Steel rail
DE2421109A1 (en) * 1973-05-02 1974-11-21 Bethlehem Steel Corp METHOD OF TREATMENT OF RAILS
DE2541978C3 (en) * 1975-09-20 1978-08-24 Butzbacher Weichenbau Gmbh, 6308 Butzbach Process for the heat treatment of switch parts in a continuous process
DE2919156A1 (en) * 1978-05-12 1979-11-15 Nippon Steel Corp PROCESS FOR MANUFACTURING HIGH QUALITY RAILS WITH HIGH WELDABILITY

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439338C2 (en) * 1974-08-16 1980-08-28 Fried. Krupp, Huettenwerke Ag, 4630 Bochum Process for the heat treatment of rails from the rolling heat
JPS57198216A (en) * 1981-05-27 1982-12-04 Nippon Kokan Kk <Nkk> Manufacture of high-strength rail

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255689B (en) * 1962-10-12 1967-12-07 United States Steel Corp Process for the heat treatment of rail head surfaces
DE2113418A1 (en) * 1970-03-20 1971-10-07 British Railways Board Steel rail
DE2421109A1 (en) * 1973-05-02 1974-11-21 Bethlehem Steel Corp METHOD OF TREATMENT OF RAILS
DE2541978C3 (en) * 1975-09-20 1978-08-24 Butzbacher Weichenbau Gmbh, 6308 Butzbach Process for the heat treatment of switch parts in a continuous process
DE2919156A1 (en) * 1978-05-12 1979-11-15 Nippon Steel Corp PROCESS FOR MANUFACTURING HIGH QUALITY RAILS WITH HIGH WELDABILITY

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS *
PATENT ABSTRACTS OF JAPAN *
STAHL UND EISEN *
TECH. MITT. KRUPP, WERKSBERICHTE *

Also Published As

Publication number Publication date
CA1256004A (en) 1989-06-20
ATE56226T1 (en) 1990-09-15
JPS61157636A (en) 1986-07-17
US4714500A (en) 1987-12-22
EP0187904B1 (en) 1990-09-05
DE3446794C1 (en) 1986-01-02
EP0187904A2 (en) 1986-07-23
DE3579578D1 (en) 1990-10-11

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