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EP1160341A2 - Procédé et dispositif pour le durcissement de rails - Google Patents

Procédé et dispositif pour le durcissement de rails Download PDF

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Publication number
EP1160341A2
EP1160341A2 EP01890152A EP01890152A EP1160341A2 EP 1160341 A2 EP1160341 A2 EP 1160341A2 EP 01890152 A EP01890152 A EP 01890152A EP 01890152 A EP01890152 A EP 01890152A EP 1160341 A2 EP1160341 A2 EP 1160341A2
Authority
EP
European Patent Office
Prior art keywords
rail
cooling
rails
positioning elements
section
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
EP01890152A
Other languages
German (de)
English (en)
Other versions
EP1160341B1 (fr
EP1160341A3 (fr
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(A2) "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/fr
Publication of EP1160341A3 publication Critical patent/EP1160341A3/fr
Application granted granted Critical
Publication of EP1160341B1 publication Critical patent/EP1160341B1/fr
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 Converting the structure from the austenitic to a desired one Microstructure stable at room temperature.
  • the invention further comprises a device for hardening rails or at least the rail head of the same by increased cooling with a Converting the structure from austenitic to a desired one Microstructure stable at room temperature, consisting essentially of a Rail support means and a cooling device.
  • Cooling can be achieved by applying at least parts of the Rail surface with cooling medium, a so-called spray or spray cooling, or by at least partially immersing the rail in a cooling bath take place, with an advantageous use of the rolling heat to the prior art count is.
  • flow devices (AT 323224 B, EP 186373 B1), cooling bed transport systems (DE 4237991 A1) and Diving devices (DE 4003363 C1, AT 402941 B) for increased cooling of the Rail or of rail parts known.
  • the invention seeks to remedy the problem and aims to develop a method Specify the type mentioned, 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 create a device by means of which the local cooling intensity of the surface areas of the Cross-section is kept the same over the length of the rail.
  • the aim is achieved in a method according to the invention in that the Rail aligned, horizontally positioned and in the austenitic structure axially aligned secured against bending, whereupon Maintenance of the clamping or bending protection of the rail and / or at least part of the rail cross-section of a temperature, which lies above the Ac3 point of the alloy, in a manner known per se cooled down at least temporarily and allowed the structure to transform become.
  • a particularly economical implementation of the process can be achieved if straightening, positioning and axially aligned clamping of the rail immediately after the last deformation stitch using the rolling heat respectively.
  • the rail is standing, the Rail head is directed vertically upwards, is clamped. It is from Advantage if heat is removed from the rail by spray cooling, whereby in Seen in the longitudinal direction in the surface areas of the cross section The same cooling intensities are used symmetrically to the height axis of the rail become.
  • the further object of the invention is in a generic device solved in that the rail support means as a supporting structure with one of the Corresponding longitudinal extension and with a high section modulus against bending and with positioning elements and / or releasable clamping devices for a definition of the rail is formed.
  • the advantage of a support structure that is resistant to bending and torsion is one Axial straight clamping of the rail, even if due to the different Mass distribution and / or different cooling intensity across the cross section an intensified cooling bending forces are formed.
  • An axially straight clamping in relation to the Coolant exposure or coolant wetting of the surface because of it precise alignment to desired areas of the rail with high Uniformity over the rail length is made possible.
  • desired cooling rates and so that desired microstructures can be achieved with high accuracy.
  • the supporting structure is a welded structure on which at least three Positioning elements, preferably over the longitudinal extent at intervals of 0.5 m each a positioning element are arranged horizontally alignable.
  • the releasable clamping means with alignment surfaces for Positioning of the rail in the horizontal longitudinal axis direction are formed.
  • the positioning elements and the Clamping means a reduced contact surface on the rail, for example one Wedge shape. This allows the so-called “soft spots” or a Soft spots on the splint can be avoided.
  • the cooling device for the Rail as a spray section with air and / or water along the longitudinal extent the same cooling intensity is formed.
  • the cooling device as a plunge pool with a cooling liquid is formed in a simple manner by adding synthetic agents Cooling intensity that is effective on the submerged rail zones is set become.
  • the setting is further formed such that the rail support structure and the cooling device in the direction of the rail vertical in cross section relative are movable relative to each other, cooling cycles and / or cooling of Rail parts can be carried out particularly efficiently.
  • a particularly simple device can be formed or created by retrofitting be when the supporting structure is aligned with a horizontally Positioning elements having plunge pool is connected and that the rail through clamping devices, e.g. hold-downs, to the positioning lanes is employable.
  • the clamping means can be in a particularly simple manner Hold-down weights are formed and at least in the distal regions of the Rail be arranged.
  • Fig. 1 is a device for axially aligned clamping a Rail 1 shown in a hanging position.
  • a supporting structure 2, which from two box profiles 22,21 is torsionally rigid, movable tong-like positioning elements 3, 3 ', which are essentially horizontal Have contact surfaces 31, 31 'for a rail 1.
  • each Clamping element 41 for example by a hydraulically actuated piston
  • a cooling device 5 for example in a plunge pool 51 with a cooling liquid 52.
  • at least partial cooling of at least part of the rail 1 can this by lifting in the direction H of the support structure 2 from a cooling medium deployed and when loosening the clamping means 4 'and the positioning elements 3rd be filed.
  • Fig. 2 shows a rail 1, which is standing in a support structure 2 against Bend is securely clamped.
  • the given support structure 2 exists for example from a lower and an upper frame box 21, 22, which Box are connected to each other torsionally rigid.
  • To an axially aligned Clamping is carried out by applying the rail 1 to positioning parts 23 and Closing positioning elements 3, 3 'which have inclined contact surfaces 31, 31' have, by swiveling in, for example, by hydraulic means 6.
  • FIG. 3 an inventive device is disclosed, which laterally arranged frame elements 21, 22 of the supporting structure 2.
  • a relative movement H allows immersion the rail into a cooling medium 52.
  • a rail 1 is directed with the rail head 11 downwards a plunge pool 51 of a cooling device 5 with a cooling liquid 52 introduced and supported by positioning elements 3 arranged therein.
  • a cooling liquid 52 introduced and supported by positioning elements 3 arranged therein.
  • Hold-down weights 40 which are movable by holding means 42, on the Rail 1
  • the positioning elements 3, 3 ' forming a small gap the contact surfaces 31, 31 'can be lowered, for example, by 0.5 mm.
  • the rail 1 is discharged from the cooling device 5, for example Lifting down the hold-down weights 40 and raising the positioning elements 3.3 '.
  • the cooling device 5 can also be lowered.

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 Procédé et dispositif pour le durcissement de rails Revoked EP1160341B1 (fr)

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 true EP1160341A2 (fr) 2001-12-05
EP1160341A3 EP1160341A3 (fr) 2004-01-02
EP1160341B1 EP1160341B1 (fr) 2005-10-12

Family

ID=3683291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890152A Revoked EP1160341B1 (fr) 2000-05-29 2001-05-22 Procédé et dispositif pour le durcissement de rails

Country Status (20)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085160A1 (fr) * 2008-02-04 2009-08-05 voestalpine Schienen GmbH Dispositif de durcissement de rails
ITMI20082163A1 (it) * 2008-12-05 2010-06-06 Danieli Off Mecc Macchina di manipolazione rotaie e relativo processo di manipolazione
EP2465953B1 (fr) 2009-05-20 2015-07-08 Danieli & C. Officine Meccaniche SpA Réservoir de refroidissement pour rails

Families Citing this family (13)

* 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
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
WO2009009723A2 (fr) * 2007-07-11 2009-01-15 Gkn Sinter Metals, Llc Composants métalliques en poudre de qualité fonctionnelle
ITMI20072244A1 (it) * 2007-11-28 2009-05-29 Danieli Off Mecc Dispositivo per trattamento termico di rotaie e relativo processo
JP4757955B2 (ja) * 2009-03-27 2011-08-24 新日本製鐵株式会社 レール溶接部の冷却装置および冷却方法
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
ES2559661T3 (es) 2013-03-22 2016-02-15 Primetals Technologies Italy S.R.L. Sistema para tratamiento térmico de rieles
RU2607882C1 (ru) * 2013-04-17 2017-01-20 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Устройство для термической обработки рельсов
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
CZ308471B6 (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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US368132A (en) * 1887-08-09 coffin
US4913747A (en) * 1984-12-24 1990-04-03 Nippon Steel Corporation Method of and apparatus for heat-treating rails
US5054746A (en) * 1990-02-05 1991-10-08 Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. Apparatus for hardening rails
US5440889A (en) * 1992-11-11 1995-08-15 Sms Schloemann-Siemag Ag Method of and arrangement for cooling of hot rolled sections in particular rails
EP0693562A1 (fr) * 1994-07-19 1996-01-24 VOEST-ALPINE SCHIENEN GmbH Procédé et appareil de traitement thermique de laminés profilés

Family Cites Families (8)

* 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
FR2109121A5 (fr) 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
US4895605A (en) 1988-08-19 1990-01-23 Algoma Steel Corporation Method for the manufacture of hardened railroad rails
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
AT409268B (de) * 2000-05-29 2002-07-25 Voest Alpine Schienen Gmbh & C Verfahren und einrichtung zum härten von schienen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US368132A (en) * 1887-08-09 coffin
US4913747A (en) * 1984-12-24 1990-04-03 Nippon Steel Corporation Method of and apparatus for heat-treating rails
US5054746A (en) * 1990-02-05 1991-10-08 Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. Apparatus for hardening rails
US5440889A (en) * 1992-11-11 1995-08-15 Sms Schloemann-Siemag Ag Method of and arrangement for cooling of hot rolled sections in particular rails
EP0693562A1 (fr) * 1994-07-19 1996-01-24 VOEST-ALPINE SCHIENEN GmbH Procédé et appareil de traitement thermique de laminés profilés

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009200367B2 (en) * 2008-02-04 2011-03-31 Voestalpine Schienen Gmbh Device for hardening rails
US8557172B2 (en) 2008-02-04 2013-10-15 Voestalpine Schienen Gmbh System and method for hardening rails
AU2011200883B2 (en) * 2008-02-04 2014-12-04 Voestalpine Schienen Gmbh Device for hardening rails
EP2241384A1 (fr) * 2008-02-04 2010-10-20 voestalpine Schienen GmbH Dispositif de durcissement de rails
EP2243565A1 (fr) * 2008-02-04 2010-10-27 voestalpine Schienen GmbH Dispositif de durcissement de rails
EP2243566A1 (fr) * 2008-02-04 2010-10-27 voestalpine Schienen GmbH Dispositif de durcissement de rails
EP2085160A1 (fr) * 2008-02-04 2009-08-05 voestalpine Schienen GmbH Dispositif de durcissement de rails
US8226883B2 (en) 2008-02-04 2012-07-24 Voestalpine Schienen Gmbh System and method for hardening rails
ITMI20082163A1 (it) * 2008-12-05 2010-06-06 Danieli Off Mecc Macchina di manipolazione rotaie e relativo processo di manipolazione
CN102239269B (zh) * 2008-12-05 2013-05-22 丹尼尔和科菲森梅克尼齐有限公司 用于操作轨道的操作机器及其操作过程
CN102239269A (zh) * 2008-12-05 2011-11-09 丹尼尔和科菲森梅克尼齐有限公司 用于操作轨道的操作机器及其操作过程
US8668788B2 (en) 2008-12-05 2014-03-11 Danieli & C. Officine Meccaniche S.P.A. Handling machine for handling rails and handling process thereof
WO2010063843A1 (fr) * 2008-12-05 2010-06-10 Danieli & C. Officine Meccaniche S.P.A. Machine de manipulation destinée à manipuler des rails et procédé de manipulation associé
EA020785B1 (ru) * 2008-12-05 2015-01-30 Даньели Энд К. Оффичине Мекканике С.П.А. Машина для транспортирования рельсов и способ транспортирования
EP2465953B1 (fr) 2009-05-20 2015-07-08 Danieli & C. Officine Meccaniche SpA Réservoir de refroidissement pour rails

Also Published As

Publication number Publication date
HUP0102212A3 (en) 2003-06-30
PL347667A1 (en) 2001-12-03
AU778188B2 (en) 2004-11-18
CA2349321A1 (fr) 2001-11-29
PL197258B1 (pl) 2008-03-31
AU4618701A (en) 2001-12-06
ES2247050T3 (es) 2006-03-01
CZ20011818A3 (cs) 2002-02-13
BR0102154B1 (pt) 2011-02-22
RU2226557C2 (ru) 2004-04-10
EP1160341B1 (fr) 2005-10-12
DK1160341T3 (da) 2006-02-27
BR0102154A (pt) 2002-02-13
HU0102212D0 (en) 2001-08-28
HRP20010411A2 (en) 2001-12-31
AT409268B (de) 2002-07-25
UA76693C2 (uk) 2006-09-15
CZ299001B6 (cs) 2008-04-02
CN1327074A (zh) 2001-12-19
KR20010109135A (ko) 2001-12-08
CA2349321C (fr) 2010-01-26
SK7202001A3 (en) 2001-12-03
TW499335B (en) 2002-08-21
KR100512401B1 (ko) 2005-09-06
DE50107654D1 (de) 2005-11-17
JP2002047516A (ja) 2002-02-15
SK286764B6 (sk) 2009-05-07
US6432230B1 (en) 2002-08-13
EP1160341A3 (fr) 2004-01-02
HRP20010411B1 (en) 2011-03-31
CN1180097C (zh) 2004-12-15
HUP0102212A2 (hu) 2002-01-28
HU223348B1 (hu) 2004-06-28
ATE306566T1 (de) 2005-10-15
ATA9392000A (de) 2001-11-15

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