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EP0693562A1 - Procédé et appareil de traitement thermique de laminés profilés - Google Patents

Procédé et appareil de traitement thermique de laminés profilés Download PDF

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Publication number
EP0693562A1
EP0693562A1 EP95890136A EP95890136A EP0693562A1 EP 0693562 A1 EP0693562 A1 EP 0693562A1 EP 95890136 A EP95890136 A EP 95890136A EP 95890136 A EP95890136 A EP 95890136A EP 0693562 A1 EP0693562 A1 EP 0693562A1
Authority
EP
European Patent Office
Prior art keywords
cooling
rolling stock
rail
increased
area
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
EP95890136A
Other languages
German (de)
English (en)
Other versions
EP0693562B1 (fr
Inventor
Georg Dipl.-Ing. Prskawetz
Peter Dipl.-Ing. Dr. Pointner
Alfred Dipl.-Ing. Dr. Moser
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
Application filed by Voestalpine Schienen GmbH filed Critical Voestalpine Schienen GmbH
Publication of EP0693562A1 publication Critical patent/EP0693562A1/fr
Application granted granted Critical
Publication of EP0693562B1 publication Critical patent/EP0693562B1/fr
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
    • 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
    • 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
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/02—Edge parts
    • 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 methods for the heat treatment of profiled rolling stock, in particular of railway or railroad tracks, with increased heat dissipation of parts of the profile surface during cooling from the gamma region of the iron-based material, in which (in the) desired cross-sectional area (s), in particular in the head area of rails, a conversion into a fine pearlitic structure with increased strength, in particular increased abrasion resistance and increased heat takes place and, if necessary, a deformation or bending due to thermal distortion of the rolling stock, in particular the rail, perpendicular to the longitudinal axis when cooling to room temperature, in particular after a structural change in the (in) the cooled cross-sectional area (s), reduced, preferably essentially avoided, and increased rigidity and flexural fatigue strength of the rolling stock can be achieved.
  • the invention relates to a device for the heat treatment of profiled rolling stock, in particular driving or railroad tracks, consisting essentially of at least one preparation area for the rolling stock on the roller table, with a rolling stock positioning device, a cooling treatment area, with devices for partial heat dissipation with high intensity from the surface of the rolling stock and a final cooling area for cooling the rolling stock to room temperature as well as storage, transverse transport, holding and manipulation means.
  • the invention is concerned with a profiled rolling stock, in particular a driving or railroad track, consisting of a rail head with an at least partially pearlitic structure, a rail foot and a web between the rail head and the rail foot.
  • Profiled rolling stock in particular driving or railroad tracks, is or are mostly made of iron-based alloys with contents of in% by weight C 0.4 to 1.0, Si 0.1 to 1.2, Mn o, 5 to 3, 5, optionally on Cr to 1.5 and others Alloy elements with concentrations below 1%, the rest iron and manufacturing-related impurities. Due to the usual dimensions, for example with a weight of 30 to 100 kg / m, and the resulting ratio of cross-section to circumference of rails, the rolling stock is cooled from the forming heat in still air, for example on cooling beds and the like. the slow cooling due to a transformation of the structure from an austenitic to a coarse pearlitic structure, possibly with ferrite components.
  • the materials mentioned above with the above structure have a hardness in the range from 250 HB to 350 HB.
  • rails should be in the field, e.g. to form bumpless route or Multiple lengths, be easy to weld, so that alloying measures to increase the hardness or strength and toughness of the material of the welding problems can usually only be carried out to a small extent and are expedient with a heat treatment tailored to the composition of the steel (DE -C 3 446 794, EP-B-0187904. EP-B-0186373). For economic reasons, too, such processes have not proven themselves on a larger scale.
  • EP-B-0293002 proposes a practically isothermal structural transformation after an initially high cooling intensity of the material at approx. 530 ° C. From DE-OS-2 820 784 it is also known to carry out a hardening of rails with a certain composition in boiling water and to achieve a desired cooling intensity for setting a fine pearlitic structure by means of additives and movement measures.
  • the invention seeks to remedy this and aims to provide a new method, by means of which profiled rolling stock with particularly advantageous usage properties can be produced, while eliminating the disadvantages of the known types of manufacture. Furthermore, it is an object of the invention to provide a device, in particular for carrying out the method, and to design a rolling stock, in particular a rail, for the highest stresses.
  • the aim is achieved in a generic method in that the rolling stock, in particular the rail, with an average temperature of at most 1100 ° C, preferably at most 900 ° C, but at least 750 ° C, in its longitudinal direction with plastic shaping straight , is brought and held in the aligned state in the transverse direction, and in a first step the cooling of the rolling stock or the rail balancing it or this to a temperature of below 860 ° C., preferably of approximately 820 ° C., in particular from 5 to 120 ° C, above the Ar3 temperature of the alloy with the same local cooling intensity, preferably essentially by radiation in still air, is allowed to cool, whereupon in a second step of cooling the rolling stock in the longitudinal direction with locally essentially the same, seen in cross section extensively different, heat withdrawn and the cooling intensity in min at least one zone on the circumference of the profiled rolling stock is enlarged, the greater cooling intensity (s) in the area (s) having a large ratio of cross section to circumference or having a high ratio Volume fraction
  • the Ar3Temperature is the temperature at which a conversion of the gamma lattice into the alpha lattice of the alloy at a cooling rate of 3 ° C / min. begins.
  • a cooling of the rolling stock with an essentially the same in the longitudinal direction, seen in cross section with extensively different, intensity of heat removal is known per se. However, it is important to assign the areas with increased cooling intensity of the surface to the mass concentration of the rolling stock.
  • a compensating cooling and adjustment of a symmetrical temperature distribution and an assignment of the cooling areas a cooling speed different over the cross-sectional areas in the longitudinal direction of the rolling stock can be kept essentially the same. It is important to adjust the size of the cooling rate with which the intended area of the rolling stock is brought to the transition temperature by measures known per se.
  • the heat treatment after hot deformation of the rolling stock with a degree of deformation of 1.8 to 8%, preferably 2 to 5%, in the last pass at a temperature of at least 750 ° C. and at most 1050 ° C. from the hot forming heat is carried out.
  • a final deformation with a degree of deformation or a reduction in cross-sectional area of 1.8 to 8% brings about a favorable austenite grain refinement if the deformation takes place in a temperature range from 770 ° C to 1050 ° C.
  • the part of the rolling stock which has the highest mass concentration for example the head of the rail, is immersed in a dipping process or immersed in a cooling liquid, and at the same time the rolling stock part (s) intended for increased cooling are reduced with less Mass concentration, for example, the foot of the rail, heat is removed by means of lower cooling intensity, for example compressed air or air-water spraying.
  • lower cooling intensity for example compressed air or air-water spraying.
  • the size of the cooling intensity in particular the composition of the cooling liquid for immersion cooling, is set in such a way that in the temperature range of 800 ° C. cooling to 450 ° C zone near the surface, in particular of the immersed part, is essentially achieved at 1.6 to 2.4 ° C./sec, preferably at approximately 2.0 ° C.
  • This cooling rate is also preferred for economic reasons, because when a desired quality of the rolled product is reached, a short cooling time is required in the second step and a high throughput can thus be achieved.
  • the zone or surface opposite the web with increased intensity preferably by means of compressed air or by means of Air-water mixture, is cooled.
  • the surface zone opposite the web is formed with increased cooling intensity essentially symmetrically to the web axis and laterally delimited.
  • the cooling intensity on the surface of the profiled rolling stock, in particular the rail is set such that the zones in which the conversion of the gamma structure takes place during cooling are essentially symmetrical and / or parallel to neutral plane, preferably concentric to the center of gravity or to the center of gravity of the cross-sectional area.
  • the rolling stock from which based on the cross section, a part is immersed in a cooling liquid in a plunge pool, while the cooling is moved in the longitudinal direction in the longitudinal direction relative to the cooling liquid container or plunge pool and / or at least in the time in which a part of the rolling stock is immersed in the cooling liquid is subjected to an oscillation or vibrated.
  • a device of the type mentioned at the outset for integrally solving the problems in the production of profiled rolling stock having special properties is characterized in accordance with the invention in that the roller table in the preparation area has a known rolling stock positioning and means for the straight or axis-aligned alignment of the profiled rolling stock with a plastic shaping thereof has a transverse transport device for a straight or axially aligned movement of the rolling stock substantially perpendicular to its axis from the preparation area to the cooling treatment area, in which area a device known per se for hardening a rolling stock, in particular the head of rails, by means of cooling liquid in a plunge pool with holding and manipulation devices and a controllable additional cooling device for intensified cooling of at least one further area of the rolling stock, in particular the foot of one Rail, are arranged and the final cooling area has a shelf for the rolling stock for cooling the same to room temperature.
  • a straight or axis-aligned alignment is important, in particular in the case of cross-section, partial or partial treatment of a profiled rolling stock.
  • the predetermined cooling conditions or the cooling intensities of the rolling stock viewed in the axial direction, can be kept the same, so that differences in strength or hardness along a generatrix of the profile are eliminated.
  • the rolling stock is subjected to a plastic shaping by means of appropriate devices, in order to avoid elastic resetting into an optionally partially curved shape.
  • An axially aligned transfer of the profiled rolling stock into a cooling area by a straight transverse transport is of great importance to avoid a message device.
  • a manipulation device is provided in the cooling area, with which a takeover and holding, immersion in a cooling liquid basin or hardening of partial areas of the rolling stock as well as transfer into a final cooling area can be carried out.
  • At least one additional cooling device can be provided for intensified cooling of further cross-sectional areas.
  • the additional cooling device can be placed on the rolling stock and the cooling intensity thereof can be regulated, and thus a further local heat dissipation can be set in accordance with the method.
  • An embodiment is also advantageous, in which the additional cooling device parts for forming a local in longitudinal or.
  • Axial direction of the rolling stock has an essentially uninterrupted transverse coolant flow and optionally has means for preventing increased heat removal from the surface (s) adjacent to the cooled surface.
  • This makes it possible to form sharply delimited cooling zones and to exclude adjacent areas from an intensified heat removal or to form a lower material hardness in them, with the additional cooling device being designed as a pressure-run or spray cooling in accordance with a further embodiment.
  • the homogeneity of the hardness and strength values in the longitudinal direction of the profiled rolling stock can be further increased if the rolling stock in the cooling liquid can be moved in the longitudinal axis direction relative to the plunge pool and / or relative to the additional cooling device and / or if devices on the plunge pool and / or in the cooling liquid itself are arranged, through which the Coolant can be moved turbulently and / or vibrated. It has been found that relative movements and also oscillatory movements or pressure waves between the cooling medium and the workpiece create the local cooling intensity, uniform and advantageous tempering conditions.
  • a splint according to the invention in particular manufactured according to a previously mentioned method, optionally produced in a device described above, is characterized in that in the cross section of the splint it has high material strength values and hardness in the upper region of the head, which values in the lower head region in the web and in the peripheral parts of the foot are lowered and there are increased hardness values of the material in the central area on the foot base compared to the peripheral parts and the web, whereby particularly uniform quality features are achieved if symmetrical to the main axis of the cross-sectional profile or symmetrical to the vertical axis of the rail cross-section essentially the same material hardness values are set.
  • Such a rail has improved usage properties even under difficult loads such as high axle loads and / or high frequency of use and / or low curve radii of the route.
  • a profiled rolling stock such as a rail is positioned in a preparation area A on the roller table 21 by, for example, retractable buffers or the like (not shown).
  • the rail 1 is aligned in a straight line, a centering shape of the straightening means, which also corrects a vertical curvature, being advantageous.
  • the rolling stock 1 is transversely transported via a storage area 2 into a cooling area B and accommodated in one Manipulation device with holding means 24, wherein support is to be provided during a shipment in such a way that there is no bending transverse to the longitudinal axis.
  • the rolling stock or the rail 1 is partially introduced into a cooling liquid 37, which is located in a plunge pool 38, by means of holding means 24. It is important that the distance between the surface of the rail 1 and the wall of the immersion basin is the same on both sides over the length, the rolling stock 1 in the immersion basin 38 or in the cooling medium 37 also advantageously being used to intensify and in particular to even out a cooling intensity of a rolling stock surface can be movable in the longitudinal direction to an extent of, for example, 0.5 to 5 m.
  • vibration generators (not shown) can also be used which place the cooling medium in a vibration which advantageously influences the cooling intensity at a frequency of, for example, 100 to 800 / min.
  • Additional cooling 3 can be placed or introduced on a flat part of a rolled profile, possibly on the foot 13 of a rail 1.
  • Such an additional cooling device can have a water 32 and an air 33 feed and can form a spray stream 31 directed onto a surface part of a rolling stock or the foot of the rail.
  • a coolant discharge for example, by means of a suction device.
  • a rail 1 according to the invention has three areas with different structure or hardness, the transitions being continuous.
  • the rail head 11 there is a fine pearlitic zone 111 with hardness values between 340 and 390 HB, possibly up to 425 HB, which merges downwards into a zone 112 with lower hardness, for example from 300 to 340 HB.
  • hardness values of 280 to 320 HB are set accordingly.
  • a pearlitic structure with a coarser structure or lamella formation and a hardness of 280 to 320 HB is present in the rail base 13 in the peripheral regions 132, as in the web 12.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP95890136A 1994-07-19 1995-07-13 Procédé et appareil de traitement thermique de laminés profilés Expired - Lifetime EP0693562B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1431/94 1994-07-19
AT143194 1994-07-19
AT0143194A AT402941B (de) 1994-07-19 1994-07-19 Verfahren und vorrichtung zur wärmebehandlung von profiliertem walzgut

Publications (2)

Publication Number Publication Date
EP0693562A1 true EP0693562A1 (fr) 1996-01-24
EP0693562B1 EP0693562B1 (fr) 2000-03-29

Family

ID=3513759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890136A Expired - Lifetime EP0693562B1 (fr) 1994-07-19 1995-07-13 Procédé et appareil de traitement thermique de laminés profilés

Country Status (19)

Country Link
EP (1) EP0693562B1 (fr)
JP (1) JP3811865B2 (fr)
KR (1) KR100372402B1 (fr)
CN (1) CN1045214C (fr)
AT (2) AT402941B (fr)
AU (1) AU702091B2 (fr)
BR (1) BR9503367A (fr)
CA (1) CA2154090C (fr)
CZ (1) CZ290866B6 (fr)
DE (1) DE59508080D1 (fr)
ES (1) ES2145247T3 (fr)
HR (1) HRP950386B1 (fr)
HU (1) HU218230B (fr)
PL (1) PL178079B1 (fr)
RU (1) RU2101369C1 (fr)
SI (1) SI9500230B (fr)
SK (1) SK282161B6 (fr)
TW (1) TW300920B (fr)
UA (1) UA34469C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849368A1 (fr) * 1996-12-19 1998-06-24 Voest-Alpine Schienen GmbH Laminé profilé et procédé pour sa fabrication
EP1160341A2 (fr) * 2000-05-29 2001-12-05 Voest-Alpine Schienen GmbH & Co.KG Procédé et dispositif pour le durcissement de rails
WO2003028912A2 (fr) * 2001-09-29 2003-04-10 Sms Meer Gmbh Procede et dispositif de traitement thermique de rails

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5261936B2 (ja) 2004-01-09 2013-08-14 新日鐵住金株式会社 レールの製造方法
JP5169030B2 (ja) * 2007-06-08 2013-03-27 日産自動車株式会社 焼入れ方法および焼入れ装置
AT505930B1 (de) * 2008-02-04 2009-05-15 Voestalpine Schienen Gmbh Einrichtung zum härten von schienen
BRPI0908257B1 (pt) 2008-02-27 2020-10-13 Nippon Steel Corporation sistema de resfriamento e método de resfriamento de aço laminado
DE102012020844A1 (de) * 2012-10-24 2014-04-24 Thyssenkrupp Gft Gleistechnik Gmbh Verfahren zur thermomechanischen Behandlung von warmgewalzten Profilen
JP6137093B2 (ja) * 2014-09-18 2017-05-31 Ｊｆｅスチール株式会社 レールの冷却方法および冷却設備
US12247358B2 (en) 2019-03-15 2025-03-11 Nippon Steel Corporation Rail

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT323224B (de) 1970-10-02 1975-06-25 Wendel Sidelor Verfahren zur wärmebehandlung einer gewalzten schiene
DE2820784A1 (de) * 1977-05-18 1978-11-23 Centre Rech Metallurgique Verfahren zur herstellung von schienen mit verbesserten eigenschaftswerten
DE3446794C1 (de) 1984-12-21 1986-01-02 BWG Butzbacher Weichenbau GmbH, 6308 Butzbach Verfahren zur Waermebehandlung perlitischer Schienenstaehle
DE3006695C2 (de) 1980-02-22 1988-12-01 Klöckner-Werke AG, 4100 Duisburg Verfahren zum Wärmebehandeln von Schienen
EP0186373B1 (fr) 1984-12-24 1990-09-12 Nippon Steel Corporation Procédé et dispositif pour le traitement thermique de rails
EP0293002B1 (fr) 1987-05-28 1990-12-12 Nippon Kokan Kabushiki Kaisha Procédé de traitement thermique du champignon d'un rail en acier
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
WO1994002652A1 (fr) 1992-07-15 1994-02-03 Voest-Alpine Schienen Gmbh Procede de traitement thermique de rails
DE4237991A1 (de) 1992-11-11 1994-05-19 Schloemann Siemag Ag Verfahren und Vorrichtung zur Abkühlung von warmgewalzten Profilen insbesondere von Schienen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2087346A (en) * 1930-08-21 1937-07-20 United States Steel Corp Method of producing steel rails
DE2439338C2 (de) * 1974-08-16 1980-08-28 Fried. Krupp, Huettenwerke Ag, 4630 Bochum Verfahren zur Wärmebehandlung von Schienen aus der Walzhitze
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 (fr) * 1982-10-11 1984-05-10 Centre Rech Metallurgique Procede perfectionne pour la fabrication de rails et rails obtenus par ce procede
US4895605A (en) * 1988-08-19 1990-01-23 Algoma Steel Corporation Method for the manufacture of hardened railroad rails

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT323224B (de) 1970-10-02 1975-06-25 Wendel Sidelor Verfahren zur wärmebehandlung einer gewalzten schiene
DE2820784A1 (de) * 1977-05-18 1978-11-23 Centre Rech Metallurgique Verfahren zur herstellung von schienen mit verbesserten eigenschaftswerten
DE3006695C2 (de) 1980-02-22 1988-12-01 Klöckner-Werke AG, 4100 Duisburg Verfahren zum Wärmebehandeln von Schienen
DE3446794C1 (de) 1984-12-21 1986-01-02 BWG Butzbacher Weichenbau GmbH, 6308 Butzbach Verfahren zur Waermebehandlung perlitischer Schienenstaehle
EP0187904B1 (fr) 1984-12-21 1990-09-05 Vereinigte Weichenbau GmbH Procédé de traitement thermique d'aciers perlitiques pour rails
EP0186373B1 (fr) 1984-12-24 1990-09-12 Nippon Steel Corporation Procédé et dispositif pour le traitement thermique de rails
EP0293002B1 (fr) 1987-05-28 1990-12-12 Nippon Kokan Kabushiki Kaisha Procédé de traitement thermique du champignon d'un rail en acier
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
WO1994002652A1 (fr) 1992-07-15 1994-02-03 Voest-Alpine Schienen Gmbh Procede de traitement thermique de rails
DE4237991A1 (de) 1992-11-11 1994-05-19 Schloemann Siemag Ag Verfahren und Vorrichtung zur Abkühlung von warmgewalzten Profilen insbesondere von Schienen

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849368A1 (fr) * 1996-12-19 1998-06-24 Voest-Alpine Schienen GmbH Laminé profilé et procédé pour sa fabrication
US6086685A (en) * 1996-12-19 2000-07-11 Voest-Alpine Schienen Gmbh Profiled rolling stock and method for manufacturing the same
EP1160341A2 (fr) * 2000-05-29 2001-12-05 Voest-Alpine Schienen GmbH & Co.KG Procédé et dispositif pour le durcissement de rails
EP1160341A3 (fr) * 2000-05-29 2004-01-02 Voest-Alpine Schienen GmbH & Co.KG Procédé et dispositif pour le durcissement de rails
KR100512401B1 (ko) * 2000-05-29 2005-09-06 뵈스트-알피네 쉬넨 게엠베하 운트 콤파니 카게 레일을 경화시키는 방법 및 장치
CZ299001B6 (cs) * 2000-05-29 2008-04-02 Voestalpine Schienen Gmbh Zpusob a zarízení na kalení kolejnic nebo hlavy kolejnic
HRP20010411B1 (en) * 2000-05-29 2011-03-31 Voestalpine Schienen Gmbh Process and device for quenching rails
WO2003028912A2 (fr) * 2001-09-29 2003-04-10 Sms Meer Gmbh Procede et dispositif de traitement thermique de rails
WO2003028912A3 (fr) * 2001-09-29 2003-09-12 Sms Meer Gmbh Procede et dispositif de traitement thermique de rails
US7416622B2 (en) 2001-09-29 2008-08-26 Sms Meer Gmbh Method and system for thermal treatment of rails

Also Published As

Publication number Publication date
AU2334995A (en) 1996-02-01
SI9500230B (en) 2001-12-31
CZ290866B6 (cs) 2002-11-13
EP0693562B1 (fr) 2000-03-29
CA2154090A1 (fr) 1996-01-20
KR100372402B1 (ko) 2003-05-09
HRP950386A2 (en) 1997-04-30
PL178079B1 (pl) 2000-02-29
JPH08170120A (ja) 1996-07-02
RU2101369C1 (ru) 1998-01-10
CA2154090C (fr) 2005-01-11
CZ186195A3 (en) 1996-02-14
ATA143194A (de) 1997-02-15
UA34469C2 (uk) 2001-03-15
DE59508080D1 (de) 2000-05-04
HU218230B (hu) 2000-06-28
JP3811865B2 (ja) 2006-08-23
SK282161B6 (sk) 2001-11-06
CN1045214C (zh) 1999-09-22
CN1123331A (zh) 1996-05-29
HUT72292A (en) 1996-04-29
ATE191241T1 (de) 2000-04-15
BR9503367A (pt) 1996-09-10
TW300920B (fr) 1997-03-21
SI9500230A (en) 1997-02-28
SK90195A3 (en) 1996-03-06
AT402941B (de) 1997-09-25
AU702091B2 (en) 1999-02-11
PL309657A1 (en) 1996-01-22
ES2145247T3 (es) 2000-07-01
HRP950386B1 (en) 2000-02-29
HU9502162D0 (en) 1995-09-28

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