EP1160341B1 - Verfahren und Einrichtung zum Härten von Schienen - Google Patents

Verfahren und Einrichtung zum Härten von Schienen Download PDF

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Publication number
EP1160341B1
EP1160341B1 EP01890152A EP01890152A EP1160341B1 EP 1160341 B1 EP1160341 B1 EP 1160341B1 EP 01890152 A EP01890152 A EP 01890152A EP 01890152 A EP01890152 A EP 01890152A EP 1160341 B1 EP1160341 B1 EP 1160341B1
Authority
EP
European Patent Office
Prior art keywords
rail
cooling
positioning elements
head
clamping means
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.)
Revoked
Application number
EP01890152A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1160341A2 (de
EP1160341A3 (de
Inventor
Norbert Köck
Peter Pointner
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 Rail Technology GmbH
Original Assignee
Voestalpine Schienen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3683291&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1160341(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine Schienen GmbH filed Critical Voestalpine Schienen GmbH
Priority to AT01890152T priority Critical patent/ATE306566T1/de
Publication of EP1160341A2 publication Critical patent/EP1160341A2/de
Publication of EP1160341A3 publication Critical patent/EP1160341A3/de
Application granted granted Critical
Publication of EP1160341B1 publication Critical patent/EP1160341B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • C21D9/06—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails with diminished tendency to become wavy
    • 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
    • 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
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/01—End parts (e.g. leading, trailing end)
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/02—Edge parts

Definitions

  • the invention relates to a method for hardening rails or at least the rail head of the same by increased cooling with a Transformation of the structure from the austenitic to a desired, at Room temperature stable microstructure.
  • the invention comprises a device for hardening rails or at least the rail head of the same by increased cooling with a Transforming the structure from austenitic to a desired, at Room temperature stable microstructure consisting essentially of one Rail support means and a cooling device.
  • a cooling can be done by applying at least parts of the Rail surface with cooling medium, a so-called spray or spray cooling, or by at least partial immersion of the rail in a cooling bath take place, with an advantageous use of rolling heat to the prior art counting is.
  • US 368 132 relates to a method of manufacturing railroad tracks with higher strength and toughness by cooling after rolling. The rail will held during cooling by gripping jaws.
  • continuous flow devices (AT 323224 B, EP 186373 B1), cooling bed transport systems (DE 4237991 A1) and Dipping devices (DE 4003363 C1, AT 402941 B) for increased cooling of Rail or rail parts known.
  • alloys with a corresponding chemical Composition can be when using hardening process in the respective Facilities quite well rails with increased hardness and abrasion resistance Area of the road surface of the rail head and sufficient resistance to breakage produce.
  • the invention seeks to remedy and sets itself the goal of a method of specify the type mentioned above, with which a constant over the length Microstructure distribution in the rail cross-section is achieved and a high rail quality can be ensured.
  • the further object of the invention is to provide a device by means of which the local cooling intensity of the surface areas of the Cross-section over the rail length is kept equal.
  • the object is achieved in a method according to claim 1, that the Rail directed in the austenitic microstructure, positioned horizontally and is secured axially aligned against bending, which is clamped under Maintaining the clamping or bending protection of the rail and / or at least a part of the rail cross-section of a temperature, which is above the Ac3 point of the alloy, in a manner known per se cooled down at least temporarily and allowed to transform the structure become.
  • the advantages achieved by the invention are essentially to be seen in that austenitic microstructure is judged and the rail then in Exogenous to the surface, heat is removed from the surface.
  • the rail During an intensified cooling of possibly parts of the Rail cross section, the rail remains trailed straight, which is the Constance of the specific cooling intensity in the axial direction is conducive.
  • Extensive research has shown that, albeit small Curvature of the rail during the intensified cooling of at least parts the same arise, change the local Acühlkurve in the surface area which allows the structural formation in the transformation from the austenitic State of the alloy is greatly affected.
  • Secures according to the invention a achsfluchtende horizontal clamping in a thermal annealing the Rail a consistent property profile of the material over the Cross section and over the rail length.
  • a particularly economical implementation of the method is achievable if a straightening, a positioning and a achsfluchtendes clamping the rail immediately after the last forming pass using the rolling heat respectively.
  • the further object of the invention is in a generic device according to claim 10 solved that the Schienenstützmitel as a supporting structure with one of Rail corresponding longitudinal extent and high resistance torque against bending as well as with positioning elements and / or releasable clamping means for a determination of the rail is formed.
  • the advantage of a bending and torsion-resistant support structure is one straight-line clamping of the rail, even if due to the different Mass distribution and / or different cooling intensity over the cross section at an intensified cooling bending forces are formed. Equally significant the advantages of a straight-line clamping in relation to the Coolant or coolant surface wetting, because so a precise alignment with desired areas of the rail with high Uniformity over the rail length is possible. Thus, for provided cross-sectional zones desired cooling rates and So that desired microstructures can be achieved with high accuracy.
  • the supporting structure as welded construction, at which at least three Positioning elements, preferably over the longitudinal extent at intervals of 0.5 m are each a positioning, horizontally aligned.
  • a simple and secure device is given when releasable clamping devices as Holds down formed for the voltage applied to the positioning rails are.
  • the releasable clamping means with alignment surfaces for Positioning of the rail are formed in the horizontal longitudinal axis direction.
  • the positioning and the Clamping means a reduced contact surface to the rail, for example a Wedge shape, exhibit.
  • the so-called "soft spots” or a Soft staining of the rail can be avoided.
  • the cooling device as a dip tank with a coolant is formed in a simple manner by addition of synthetic agents the Cooling intensity, which are effective on the submerged rail zones, set become.
  • a particularly simple device can be formed or created by retrofitting be if the support structure with a horizontally oriented Positioning elements having dip tank is connected and that the rail by means of clamping devices, for example hold-downs, to the positioning arms is adjustable.
  • clamping devices for example hold-downs
  • the clamping means as Hold-down weights formed and at least in the distal areas of the Be arranged rail.
  • FIG. 1 is a device for achsfrunenden clamping a Rail 1 shown in a hanging position.
  • a supporting structure 2 which from two box sections 22,21 is torsionally rigid, carries movable forceps-like positioning elements 3, 3 ', which are substantially horizontal Have contact surfaces 31, 31 'for a rail 1.
  • each one Clamping element 41 for example by a hydraulically actuated piston a Alignment of the rail to ensure which rail further by, for example, lowering the supporting structure 2 into a cooling device 5, For example, in a dip tank 51 m spent with a cooling liquid 52.
  • After at least partial cooling of at least a part of the rail 1 can this by lifting in the direction H of the support structure 2 from a cooling medium applied and upon release of the clamping means 4 'and the positioning elements. 3 be filed.
  • Fig. 2 shows a rail 1, which standing in a supporting structure 2 against Curved secured.
  • the given support structure 2 consists for example, from a lower and an upper frame box 21,22, which Box are connected to each other torsionally stiff.
  • To an offspring Clamping is carried out applying the rail 1 on positioning members 23 and a Closing of positioning elements 3,3 ', which oblique contact surfaces 31, 31' own, by pivoting example by hydraulic means. 6
  • a device according to the invention is disclosed, which laterally arranged frame members 21, 22 of the support structure 2 has. to Clamping a rail 1, which of positioning elements 3,3 'with Support surfaces 31,31 'is worn, are clamping means 4,4' about pivot points 42,42 ' pivoted and their contact surfaces 41, 41 'employed on the rail and so set the rail 1.
  • a relative movement H can be immersed the rail in a cooling medium 52 done.
  • FIG. 4 is again schematically a horizontal orientation of a rail. 1 shown.
  • a rail 1 is directed with the rail head 11 down in a dip tank 51 a cooling device 5 with a cooling liquid 52nd introduced and supported by Positionierlemente 3 arranged therein.
  • a hang-up of Hold-down weights 40 which are movable by holding means 42, on the Rail 1, wherein the positioning elements 3,3 'to form a small gap the contact surfaces 31,31 'can be lowered, for example, 0.5 mm.
  • a Lifting the hold-down weights 40 and raising the positioning 3,3 ' it can also be done lowering the cooling device 5.

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)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
EP01890152A 2000-05-29 2001-05-22 Verfahren und Einrichtung zum Härten von Schienen Revoked EP1160341B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT01890152T ATE306566T1 (de) 2000-05-29 2001-05-22 Verfahren und einrichtung zum härten von schienen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT9392000 2000-05-29
AT0093900A AT409268B (de) 2000-05-29 2000-05-29 Verfahren und einrichtung zum härten von schienen

Publications (3)

Publication Number Publication Date
EP1160341A2 EP1160341A2 (de) 2001-12-05
EP1160341A3 EP1160341A3 (de) 2004-01-02
EP1160341B1 true EP1160341B1 (de) 2005-10-12

Family

ID=3683291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890152A Revoked EP1160341B1 (de) 2000-05-29 2001-05-22 Verfahren und Einrichtung zum Härten von Schienen

Country Status (20)

Country Link
US (1) US6432230B1 (da)
EP (1) EP1160341B1 (da)
JP (1) JP2002047516A (da)
KR (1) KR100512401B1 (da)
CN (1) CN1180097C (da)
AT (2) AT409268B (da)
AU (1) AU778188B2 (da)
BR (1) BR0102154B1 (da)
CA (1) CA2349321C (da)
CZ (1) CZ299001B6 (da)
DE (1) DE50107654D1 (da)
DK (1) DK1160341T3 (da)
ES (1) ES2247050T3 (da)
HR (1) HRP20010411B1 (da)
HU (1) HU223348B1 (da)
PL (1) PL197258B1 (da)
RU (1) RU2226557C2 (da)
SK (1) SK286764B6 (da)
TW (1) TW499335B (da)
UA (1) UA76693C2 (da)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409268B (de) * 2000-05-29 2002-07-25 Voest Alpine Schienen Gmbh & C Verfahren und einrichtung zum härten von schienen
AT410549B (de) * 2001-09-13 2003-05-26 Voest Alpine Schienen Gmbh & C Vorrichtung zum vergüten von walzgut mit grosser länge
ATE442461T1 (de) * 2004-01-09 2009-09-15 Nippon Steel Corp Verfahren zur anfertigung von schienen
US20100319650A1 (en) * 2007-07-11 2010-12-23 Clozza Delbert P Functionally graded powder metal components
ITMI20072244A1 (it) * 2007-11-28 2009-05-29 Danieli Off Mecc Dispositivo per trattamento termico di rotaie e relativo processo
AT505930B1 (de) * 2008-02-04 2009-05-15 Voestalpine Schienen Gmbh Einrichtung zum härten von schienen
IT1392174B1 (it) * 2008-12-05 2012-02-22 Danieli Off Mecc Macchina di manipolazione rotaie e relativo processo di manipolazione
US8353443B2 (en) * 2009-03-27 2013-01-15 Nippon Steel Corporation Device and method for cooling rail weld zone
ITMI20090892A1 (it) 2009-05-20 2010-11-21 Danieli Off Mecc Vasca di raffreddamento per rotaie
ITMI20112052A1 (it) * 2011-11-11 2013-05-12 Danieli Off Mecc Vasca di raffreddamento per rotaie
DE102012020844A1 (de) 2012-10-24 2014-04-24 Thyssenkrupp Gft Gleistechnik Gmbh Verfahren zur thermomechanischen Behandlung von warmgewalzten Profilen
EP2781608B1 (en) 2013-03-22 2015-10-28 Primetals Technologies Italy S.R.L. System for thermal treatment of rails
TR201812809T4 (tr) * 2013-04-17 2018-09-21 Scient And Manufacturing Enterprise Tomsk Electronic Company Ltd Rayların ısıl olarak işlenmesine yönelik cihaz.
RU2636777C1 (ru) * 2016-12-27 2017-11-28 РЕЙЛ 1520 АйПи ЛТД Способ термической обработки железнодорожных колес
RU2668872C1 (ru) * 2017-11-08 2018-10-04 Акционерное общество "Нижнетагильский металлургический комбинат" (АО "ЕВРАЗ НТМК") Способ термической обработки железнодорожных колес
CZ2019542A3 (cs) * 2019-08-19 2020-09-02 Západočeská Univerzita V Plzni Způsob výroby ocelových dílů z AHS oceli řízeným lokálním ochlazováním médiem, využívající tvorbu vícefázové struktury s přerušovaným chlazením na požadované teplotě

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US125650A (en) * 1872-04-09 Improvement in tempering steel railroad rails
US368132A (en) * 1887-08-09 coffin
FR2109121A5 (da) 1970-10-02 1972-05-26 Wendel Sidelor
AT375402B (de) * 1982-03-09 1984-08-10 Voest Alpine Ag Verfahren zum waermebehandeln von schienen
JPS5953628A (ja) * 1982-09-22 1984-03-28 Nippon Steel Corp 耐破端特性の優れたレ−ルの製造法
EP0186373B1 (en) 1984-12-24 1990-09-12 Nippon Steel Corporation Method of and apparatus for heat treating rails
US4895605A (en) 1988-08-19 1990-01-23 Algoma Steel Corporation Method for the manufacture of hardened railroad rails
DE4003363C1 (en) 1990-02-05 1991-03-28 Voest-Alpine Industrieanlagenbau Ges.M.B.H., Linz, At Hardening rails from rolling temp. - using appts. with manipulator engaging rail from exit roller table with support arms positioned pivotably on each side
US5209792A (en) * 1990-07-30 1993-05-11 Nkk Corporation High-strength, damage-resistant rail
AT399346B (de) 1992-07-15 1995-04-25 Voest Alpine Schienen Gmbh Verfahren zum w[rmebehandeln von schienen
DE4237991A1 (de) 1992-11-11 1994-05-19 Schloemann Siemag Ag Verfahren und Vorrichtung zur Abkühlung von warmgewalzten Profilen insbesondere von Schienen
AT402941B (de) 1994-07-19 1997-09-25 Voest Alpine Schienen Gmbh Verfahren und vorrichtung zur wärmebehandlung von profiliertem walzgut
AT409268B (de) * 2000-05-29 2002-07-25 Voest Alpine Schienen Gmbh & C Verfahren und einrichtung zum härten von schienen

Also Published As

Publication number Publication date
ATA9392000A (de) 2001-11-15
HUP0102212A2 (hu) 2002-01-28
JP2002047516A (ja) 2002-02-15
KR100512401B1 (ko) 2005-09-06
DE50107654D1 (de) 2005-11-17
US6432230B1 (en) 2002-08-13
CN1327074A (zh) 2001-12-19
DK1160341T3 (da) 2006-02-27
PL197258B1 (pl) 2008-03-31
BR0102154A (pt) 2002-02-13
SK7202001A3 (en) 2001-12-03
HRP20010411A2 (en) 2001-12-31
AT409268B (de) 2002-07-25
HU0102212D0 (en) 2001-08-28
AU4618701A (en) 2001-12-06
TW499335B (en) 2002-08-21
KR20010109135A (ko) 2001-12-08
BR0102154B1 (pt) 2011-02-22
AU778188B2 (en) 2004-11-18
EP1160341A2 (de) 2001-12-05
CA2349321A1 (en) 2001-11-29
HU223348B1 (hu) 2004-06-28
HUP0102212A3 (en) 2003-06-30
EP1160341A3 (de) 2004-01-02
CA2349321C (en) 2010-01-26
HRP20010411B1 (en) 2011-03-31
CZ299001B6 (cs) 2008-04-02
ES2247050T3 (es) 2006-03-01
ATE306566T1 (de) 2005-10-15
UA76693C2 (uk) 2006-09-15
CN1180097C (zh) 2004-12-15
RU2226557C2 (ru) 2004-04-10
CZ20011818A3 (cs) 2002-02-13
PL347667A1 (en) 2001-12-03
SK286764B6 (sk) 2009-05-07

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