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EP2085160A1 - Dispositif de durcissement de rails - Google Patents

Dispositif de durcissement de rails Download PDF

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Publication number
EP2085160A1
EP2085160A1 EP09450016A EP09450016A EP2085160A1 EP 2085160 A1 EP2085160 A1 EP 2085160A1 EP 09450016 A EP09450016 A EP 09450016A EP 09450016 A EP09450016 A EP 09450016A EP 2085160 A1 EP2085160 A1 EP 2085160A1
Authority
EP
European Patent Office
Prior art keywords
rail
basin
coolant
length
cooling
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
EP09450016A
Other languages
German (de)
English (en)
Other versions
EP2085160B1 (fr
Inventor
Hans Ing. Pfeiler
Norbert Köck
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=40469890&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2085160(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to PL10450109T priority Critical patent/PL2241384T3/pl
Priority to EP10450111A priority patent/EP2243566B1/fr
Priority to DK10450110.1T priority patent/DK2243565T3/da
Priority to SI200930265T priority patent/SI2085160T1/sl
Priority to EP10450110A priority patent/EP2243565B1/fr
Priority to DK10450111.9T priority patent/DK2243566T3/da
Priority to PL10450110T priority patent/PL2243565T3/pl
Application filed by Voestalpine Schienen GmbH filed Critical Voestalpine Schienen GmbH
Priority to DK10450109.3T priority patent/DK2241384T3/da
Priority to PL10450111T priority patent/PL2243566T3/pl
Priority to EP10450109A priority patent/EP2241384B1/fr
Priority to PL09450016T priority patent/PL2085160T3/pl
Publication of EP2085160A1 publication Critical patent/EP2085160A1/fr
Publication of EP2085160B1 publication Critical patent/EP2085160B1/fr
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/003—Transfer to bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/06—Cooling beds comprising carriages
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/006—Transfer from bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/023—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes by immersion in a bath

Definitions

  • the invention relates to a device for hardening rails, in particular profiled rails, optionally with respectively different cross-sectional shape and a length of greater than 50m by cooling at least part of the respective rail cross-section over the entire rail length in a coolant, consisting of Querverschiebeschn in the area a roller table, of directing means and manipulation gripper for moving the rail in the device, at least one positioning means, each with a basin or trough with coolant and a cooling bed.
  • a coolant consisting of Querverschiebeschn in the area a roller table
  • Rails of carbon-containing, optionally low-alloy steels which are placed on a cooling bed after rolling and allowed to cool, have a pearlitic structure throughout, the material having corresponding mechanical properties.
  • the microstructure can be adjusted in such a way that at least the claimed rail head high hardness, high abrasion resistance and a has low Rissinitiation, ie, that the rail in the track has improved performance characteristics.
  • a device for hardening rails by a targeted formation of the microstructure during the cooling of the same can be designed for a passage through a spray cooling device or for a dip in a coolant.
  • Continuous spray cooling systems for rail hardening are generally simple in construction, but have the disadvantage of a large footprint, require a complex technology and can not exclude unwanted hingeschwankungen the rails in a production process not efficient. Furthermore, a precise tuning of the cooling to changing cross-sectional profiles such as tongue, groove, Vignol rails and the like. Not often done in a continuous sprayer to the extent necessary, with also possibly a delay in the cooling of cross-sectional areas in the flow to unevendeffenbeetzschschschitch and thus leads to hardness variations of the material over the rail length.
  • the invention seeks to remedy the deficiencies and sets itself the goal of creating a device of the type mentioned for the hardening of rails, especially profiled rails, with which high throughput with high reliability high quality rails can be produced economically.
  • the goal is achieved in a generic device, when the manipulation gripper is formed from pliers having gripping arms, which are each formed with centering parts for an axial alignment of the head of the rail and with gripping parts for cross-aligned holding the rail foot and thus a dimensionally accurate introduction of Rail in the positioning and a determination of the same is possible in this.
  • the pliers are at the same time rotatable in the same direction about a common axis at least with an angular amount to align rails from different roller positions, eg from a reclining position on the head side, hold cross-section aligned and accurately by axial rotation to be able to bring into a positioning.
  • the rail In the course of the discharge of the rail from the positioning means can be stored by rotation of the pliers, the rail with advantage in a desired cross-sectional position on a transfer agent and / or on a cooling bed.
  • the pliers are each formed with a similarly movable or engageable gripping arm.
  • the manipulation gripper and the associated transfer means can be moved transversely with more than the greatest rail height over the roller table and only the gripping arms of the pliers can be lowered vertically between the rollers of the roller table for receiving the rail, loading of the roller table end area from the rollers remains leaking rails undisturbed with respect to a simultaneous placement of rails in the hardening device, which ensures high flexibility and performance of the same or a high throughput.
  • the object is inventively further achieved in a device of the type mentioned above for the hardening of rails, that the positioning horizontally aligned a plurality of holding components with facilities for the foot of a hanging introduced rail, which rail foot respectively on the plants by releasable clamping elements or Hold-down delay-proof in the axial direction of the rail can be fixed horizontally.
  • the advantages achieved with the positioning means according to the invention are essentially to be seen in the fact that they are formed from holding components which are aligned horizontally with great accuracy, each having two installations and two hold-downs.
  • Such a rail from the rolling heat with austenitic structure which is inserted axially aligned by a manipulation gripper in a certain desired position in the holding components, each with two systems for the foot of the rail, by two clamping elements each shift and be determined against twisting, which determination is maintained even with an action of large forces, eg in a cooling phase of the rail head, with high accuracy.
  • the holding components and the hold-down or clamping elements for the rail foot are provided in the longitudinal extent of the positioning respectively selbarts so that advantageously no bending moments arise in the determination of the rail.
  • the rail is held immovably on both sides by a system and a releasable clamping element for the rail of a component of the positioning and the other facilities and elements of the respective components allow a shift in the rail longitudinal direction.
  • the rail can be stabilized in a desired cross-sectional position, whereby the shortening given by the material contraction takes place by a displacement free of surface damage.
  • a goal is achieved in a device for hardening of rails according to the preamble of the main claim also in that at least two basins with positioning axparallel side by side at the same height are arranged horizontally and usable for a rail hardening part of the coolant in the basin has a depth which the height of the largest rail profile exceeds by at least 10%.
  • the advantages of this feature of the invention are mainly due to a high performance achieved by means of two basins, which are arranged axparallel, and in particular flexibility of the hardening device and by their universal use possible by means of controllable positioning means, optionally for a sequential, full cooling and / or cooling of parts the cross section, for example, only the head or the running surface of a rail in the cooling medium. It is also possible with the device according to the invention to apply a plurality of immersion parameters for the rails in the coolant during their curing and thus to achieve a desired microstructure distribution over the rail cross-section.
  • the basin on the bottom side at least one coolant inlet per 1.5m basin length, through which a regulated flow of coolant can be fed, preferably in the tank above the coolant inlet to this sealed spaced at least one perforated or Wegströmbare plate arranged and / or in the flow direction of the coolant downstream of a plate with nozzles or with channels is (are) used.
  • the local cooling intensity of the coolant for the cross-sectional surface areas can be kept the same over the longitudinal rail extension and consequently high uniform quality in the production of hardened rails can be achieved.
  • discharge means for the refrigerant are arranged in the basin and / or in the supply lines, which can be opened for short-term emptying of the basin, e.g. in the event of a malfunction, the coolant is discharged from the tank in the shortest possible time, whereby the rail hardening is interrupted.
  • This cessation of interruption provides protection of the device and makes it easier to deploy a rail held in the pool during system failure.
  • the stated object of the invention to provide a new device for hardening rails with different effective local cooling intensities over the cross section is also achieved by the fact that the basin and the installations and the releasable clamping means for the foot of the hanging rail of all components of the positioning means Insertion of the rail in the coolant simultaneously vertically controlled relative to each other movable and a respective vertical holding position and time are adjustable in this.
  • such desired structural formations and also structural regions with different microstructures can be achieved over the cross-section of rails, whereby such rails can be produced with a property profile designed to be favorable for particular stresses.
  • the system and the clamping means for the foot of the hanging rail of all components of the positioning means are simultaneously horizontally adjustable transversely to the pelvis.
  • FIG. 1 is shown in cross section an embodiment of the invention.
  • a rail 1 is spent after the stitch in the last rolling caliber (not shown) on a roller table 2 and positioned by a transverse pushing means 21 on this.
  • FIG. 1 illustrated inventive manipulator gripper 3 is designed such that this a track 1 in a lying position on the roller table 2 of this by means of a plurality of pliers 30 on the rail length correctly picks up and aligned by holding the gripping arms 31,31 'axially.
  • the pliers 30 are vertically, horizontally and rotationally movable, so that a laterally located rail from the roller table 2, axially directed, in a suspended position with a horizontal foot surface together by machine-trained parts with simultaneous clamping of the centering parts 312.312 'perpendicular to the rail axis rotated, in a positioning means 4, as in Fig. 3 shown on facilities 41,41 'can be introduced.
  • a rail 1,1 'from the roller table 2 or by a positioning means 4 can be received and stored on a cooling bed 6 or on a transfer means 61.
  • An inventive positioning means 4 is in Fig. 3 shown and has over the length of a rail 1 holding components 40, 40 'with systems 41,41', in which the rail 1 is inserted axially directed. Clamping elements 42, 42 'can be adjusted in the direction of the systems 41, 41' towards the flange ends of a rail foot 11. Positioning means 4 and 5 basin with coolant 50 cooperate during the hardening process of rails 1.
  • Fig. 1 shows in the device at least two tanks 5 with coolant 50 axparallel arranged side by side, each of which is usable for curing a rail 1 part of the coolant 50 in the basin 5 has a depth which is greater than the maximum rail height to a full immersion of the same in to allow the cooling liquid 50.
  • coolant inlet 54 anddeschellenk Rheinen 53 are arranged on the bottom side in the basin 5, wherein to smooth out the flow velocity of the coolant 50 during flow of a rail 1 over the entire length of the basin 5 through-flow plates 51 and / or nozzle plates 52 are used for diving down.
  • Positioning means 4 for rails 1 and 5 with refrigerant tank 50, as previously mentioned, together and by means of control means (not shown) are relatively movable and at least in the positions "dipping of cross-sectional parts" and / or “head hardening” and / or “full Dip hardening "can be positioned for periods.
  • a grooved rail 1 R in comparison with a Vignolschiene 1 V in Fig. 4 can Ax deviations A Z , A R between Kopfaxe x and preparedaxe y be given.
  • a Ax deviations Az, Ax corresponding horizontal, axparallel positioning of positioning means 4 and 5 pelvis can be set ..

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Bearings For Parts Moving Linearly (AREA)
EP09450016A 2008-02-04 2009-01-27 Dispositif de durcissement de rails Active EP2085160B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DK10450109.3T DK2241384T3 (da) 2008-02-04 2009-01-27 Apparat til hærdning af skinner
DK10450110.1T DK2243565T3 (da) 2008-02-04 2009-01-27 Indretning til hærdning af skinner
SI200930265T SI2085160T1 (sl) 2008-02-04 2009-01-27 Naprava za utrjevanje tirnic
EP10450110A EP2243565B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
DK10450111.9T DK2243566T3 (da) 2008-02-04 2009-01-27 Indretning til hærdning af skinner
PL10450110T PL2243565T3 (pl) 2008-02-04 2009-01-27 Urządzenie do hartowania szyn
PL10450109T PL2241384T3 (pl) 2008-02-04 2009-01-27 Urządzenie do hartowania szyn
EP10450109A EP2241384B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
EP10450111A EP2243566B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
PL10450111T PL2243566T3 (pl) 2008-02-04 2009-01-27 Urządzenie do hartowania szyn
PL09450016T PL2085160T3 (pl) 2008-02-04 2009-01-27 Urządzenie do hartowania szyn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0017508A AT505930B1 (de) 2008-02-04 2008-02-04 Einrichtung zum härten von schienen

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP10450110.1 Division-Into 2010-07-06
EP10450111.9 Division-Into 2010-07-06
EP10450109.3 Division-Into 2010-07-06

Publications (2)

Publication Number Publication Date
EP2085160A1 true EP2085160A1 (fr) 2009-08-05
EP2085160B1 EP2085160B1 (fr) 2012-04-25

Family

ID=40469890

Family Applications (4)

Application Number Title Priority Date Filing Date
EP10450111A Active EP2243566B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
EP10450110A Active EP2243565B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
EP09450016A Active EP2085160B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
EP10450109A Active EP2241384B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP10450111A Active EP2243566B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails
EP10450110A Active EP2243565B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10450109A Active EP2241384B1 (fr) 2008-02-04 2009-01-27 Dispositif de durcissement de rails

Country Status (18)

Country Link
US (2) US8226883B2 (fr)
EP (4) EP2243566B1 (fr)
JP (4) JP5163987B2 (fr)
KR (1) KR101221567B1 (fr)
CN (4) CN102010970B (fr)
AT (4) AT505930B1 (fr)
AU (5) AU2009200367B2 (fr)
BR (4) BR122019018876B1 (fr)
CA (4) CA2652329C (fr)
DK (4) DK2243566T3 (fr)
ES (4) ES2382728T3 (fr)
HR (4) HRP20120492T1 (fr)
PL (4) PL2243566T3 (fr)
PT (4) PT2243566E (fr)
RU (1) RU2388834C1 (fr)
SI (4) SI2241384T1 (fr)
TW (1) TW200946689A (fr)
UA (1) UA92954C2 (fr)

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PT1047355E (pt) 1998-01-16 2005-05-31 Wolz Stefan Processo para a producao de inlays, coroas, pontes, pontes parciais, estruturas para implantes totalmente ceramicos, ou super estruturas em odontologia
AT505930B1 (de) * 2008-02-04 2009-05-15 Voestalpine Schienen Gmbh Einrichtung zum härten von schienen
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
JP5421399B2 (ja) * 2012-01-27 2014-02-19 電気興業株式会社 高周波誘導連続加熱方法及び高周波誘導連続加熱装置
DE102012020844A1 (de) 2012-10-24 2014-04-24 Thyssenkrupp Gft Gleistechnik Gmbh Verfahren zur thermomechanischen Behandlung von warmgewalzten Profilen
CN103736981B (zh) * 2013-12-27 2016-04-27 浙江今飞凯达轮毂股份有限公司 轮毂自动泡水装置
WO2015114550A1 (fr) * 2014-01-29 2015-08-06 Danieli & C. Officine Meccaniche S.P.A. Réservoir à refroidissement efficace pour le traitement de rails perlitiques et bainitiques
JP6244569B2 (ja) * 2014-02-28 2017-12-13 日立オートモティブシステムズ株式会社 表面加工部品の製造方法および表面加工部品の製造装置
CN108221517B (zh) * 2016-12-22 2023-10-20 上海工程技术大学 用于固定中频感应加热正火变压器的仿形定位装置
CN106702092B (zh) * 2017-03-16 2019-04-05 广东永加内衣材料科技有限公司 一种五金件热处理设备
CN107598578B (zh) * 2017-11-03 2023-09-22 湖南精专自动化技术有限公司 一种钳子头全自动加工钻孔、打磨加工生产中心
CN109775065B (zh) * 2019-01-31 2024-07-19 红云红河烟草(集团)有限责任公司 一种手工装箱支架
CN110106339B (zh) * 2019-05-15 2024-07-30 宁夏天地奔牛实业集团有限公司 一种连续式齿轨高效感应淬火方法
CN111673061A (zh) * 2020-06-10 2020-09-18 中国重型机械研究院股份公司 一种铸坯称重淬火在线调整装置及方法
CN112536517B (zh) * 2020-11-20 2022-04-12 安徽腾达钢构有限公司 型钢定位导出装置
CN112756442A (zh) * 2020-12-30 2021-05-07 攀钢集团攀枝花钢钒有限公司 改善钢轨端部矫前平直度的卡钢装置、卡钢结构及方法
CN113953120B (zh) * 2021-11-29 2025-03-07 铁科（北京）轨道装备技术有限公司 钢轨表面上漆装置和钢轨上漆系统

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Publication number Priority date Publication date Assignee Title
GB266730A (en) * 1926-02-23 1927-12-01 Maximilianshuette Eisenwerk Improved process and apparatus for strengthening the heads of railway rails
EP0441766A1 (fr) * 1990-02-05 1991-08-14 VOEST-ALPINE Industrieanlagenbau GmbH Appareil pour la trempe de rails
EP1160341A2 (fr) * 2000-05-29 2001-12-05 Voest-Alpine Schienen GmbH & Co.KG Procédé et dispositif pour le durcissement de rails
AT410549B (de) 2001-09-13 2003-05-26 Voest Alpine Schienen Gmbh & C Vorrichtung zum vergüten von walzgut mit grosser länge

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US20120168043A1 (en) 2012-07-05
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US8557172B2 (en) 2013-10-15
EP2241384A1 (fr) 2010-10-20
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US8226883B2 (en) 2012-07-24
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ATE550112T1 (de) 2012-04-15
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ES2386877T3 (es) 2012-09-04

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