EP0022451A1 - Rail without short pitch corrugations - Google Patents

Rail without short pitch corrugations Download PDF

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Publication number
EP0022451A1
EP0022451A1 EP80102198A EP80102198A EP0022451A1 EP 0022451 A1 EP0022451 A1 EP 0022451A1 EP 80102198 A EP80102198 A EP 80102198A EP 80102198 A EP80102198 A EP 80102198A EP 0022451 A1 EP0022451 A1 EP 0022451A1
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EP
European Patent Office
Prior art keywords
rail
corrugations
guide surfaces
area
running
Prior art date
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Granted
Application number
EP80102198A
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German (de)
French (fr)
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EP0022451B1 (en
Inventor
Hans Dr. Guntermann
Gerhard Arndt
Gustav Baum
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Goldschmidt ETB GmbH
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Elektro Thermit GmbH
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Priority to AT80102198T priority Critical patent/ATE362T1/en
Publication of EP0022451A1 publication Critical patent/EP0022451A1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/08—Composite rails; Compound rails with dismountable or non-dismountable parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/902—Metal treatment having portions of differing metallurgical properties or characteristics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12958—Next to Fe-base component
    • Y10T428/12965—Both containing 0.01-1.7% carbon [i.e., steel]

Definitions

  • the present invention relates to a rail for track-bound vehicles which has no tendency to form corrugations.
  • Ripples are periodic bumps on the rail surface with wavelengths of approx. 30 to 60 mm and amplitudes up to approx. 0.4 mm and are preferably presented on the running surface as more or less regular shiny mountains and valleys. These corrugations reduce driving comfort and contribute significantly to the stress on the vehicles and the superstructure. They cause the track position to deteriorate prematurely and considerably increase noise emissions.
  • Rail made of pearlitic steels with 0.7% carbon and each about 1% manganese and chrome
  • the rail according to the invention which has no tendency to corrugation, is characterized in that it has a metallic material in the area of the running and / or guiding surfaces, the yield or yield strength of which lies above the surface pressure caused by the wheel.
  • the rail does not solidify in the area of the running and / or guide surfaces from a cold-forming process ed material.
  • Suitable filler materials can have the following composition: or
  • the grooved rail according to the invention can be produced in various ways. Electrical cladding has proven to be particularly suitable for producing such a rail.
  • the rail in the area of the running and / or guiding surfaces is mechanically or autogenously cut to a depth of 2 to 3 mm and a width of about 20 to 30 mm, and the recesses are filled with a weld metal of the appropriate composition.
  • the rail head is then machined to fit the profile. It is also possible to apply weld metal without a recess and to grind it so that it can be driven, so that the weld seam protrudes beyond the actual rail profile.
  • the rails according to the invention therefore lend themselves particularly well to the track parts which are particularly stressed and strong corrugations are to be expected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Rolling (AREA)
  • Braking Arrangements (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

The invention concerns a corrugation-free rail for track-bound vehicles. In the invention, the rail comprises a metallic material in the area of the travel and/or guide surfaces of which the stress limit or yield point is above the wheel-induced compression. Preferably, the rail in the area of the travel and/or guide surfaces is composed of a non-work-hardenable material. The preferred material composition is (by weight): -carbon 0.2 to 0.4% -chromium 13 to 18% -molybdenum 0.3 to 1.5% -manganese 0.5 to 1.5% -silicon 0.3 to 1% -remainder is iron. -

Description

Die vorliegende Erfindung betrifft eine Schiene für spurgebundene Fahrzeuge, die keine Neigung zur Riffelbildung aufweist.The present invention relates to a rail for track-bound vehicles which has no tendency to form corrugations.

Bei allen Schienenbahnen spielt die Aufrechterhaltung einer einwandfreien Lauf- und Führungsfläche der Schiene eine wichtige Rolle, wobei dem Problem der Riffelbildung besondere Bedeutung zukommt.Maintaining a perfect running and guiding surface of the rail plays an important role in all railways, whereby the problem of corrugation is of particular importance.

Riffeln sind periodische Unebenheiten auf der Schienenoberfläche mit Wellenlängen von ca. 30 bis 60 mm und Amplituden bis zu ca. 0,4 mm und stellen sich vorzugsweise auf der Fahrfläche als mehr oder weniger regelmäßige glänzende Berge und Täler dar. Diese Riffeln vermindern den Fahrkomfort und tragen erheblich zur Beanspruchung der Fahrzeuge und des Oberbaus bei. Sie bewirken eine vorzeitige Verschlechterung der Gleislage und erhöhen die Geräuschemission beträchtlich.Ripples are periodic bumps on the rail surface with wavelengths of approx. 30 to 60 mm and amplitudes up to approx. 0.4 mm and are preferably presented on the running surface as more or less regular shiny mountains and valleys. These corrugations reduce driving comfort and contribute significantly to the stress on the vehicles and the superstructure. They cause the track position to deteriorate prematurely and considerably increase noise emissions.

Die Ursachen für die Entstehung der Riffeln entziehen sich bisher weitgehend der Forschung, und es sind bis heute keine sicheren Abhilfe- und Vorsorgemaßnahmen zur Vermeidung der Riffelbildung bekannt. Um die schädlichen Auswirkungen zu vermindern, stellt das Abschleifen der mit Riffeln behafteten Flächen bisher die einzige wirksame Maßnahme zur Beseitigung der Riffeln dar. Das Abschleifen der Riffeln verkürzt die Liegedauer der Schienen erheblich und ist mit hohen Schleifkosten verbunden, vor allem, da die Riffeln nach dem Schleifen sehr bald erneut auftreten.The causes of the formation of the corrugations have so far largely been eluded from research, and no safe remedial and preventive measures to avoid the formation of corrugations are known to date. In order to reduce the harmful effects, the grinding of surfaces with corrugations has so far been the only effective one Measure to eliminate the corrugations. Grinding the corrugations shortens the length of time the rails lie and is associated with high grinding costs, especially since the corrugations reappear very soon after grinding.

Zur Vermeidung der Riffelbildung wurden eine Vielzahl von Verfahren und Maßnahmen erprobt. So wurde z.B. vorgeschlagen, riffelanfällige Schienen zu glühen, um Spannungen, die man für die Entstehung von Riffeln verantwortlich hielt, abzubauen. Ferner wurde versucht, durch metallurgische Maßnahmen bei der Schienenstahlherstellung, insbesondere in bezug auf Vermeidung oder Verminderung nichtmetallischer Elemente in Schienenstählen, die Riffelbildung zu beseitigen. Weiterhin wurde gemäß DE-PS 19 03 753 vorgeschlagen, riffelbehaftete bzw. riffelanfällige Schienen im Bereich der Lauf- und/oder Führungsflächen ganz oder teilweise auf- bzw. umzuschmelzen, wobei die Um- bzw. Aufschmelzung elektrisch durch einen Lichtbogen zwischen der zu behandelnden Schiene und einer verbrauchenden oder nicht verbrauchenden Elektrode erfolgt. Alle diese Verfahren bzw. Maßnahmen brachten auf die Dauer nicht den angestrebten Erfolg. Auch Maßnahmen zur Verschleißverminderung, bei denen die Lauf-und/oder Führungsflächen aus vorzugsweise aufgeschweißtem austenitischem Werkstoff bestehen, hatten auf die Riffelbildung keinen Einfluß.A large number of methods and measures have been tried to avoid the formation of corrugations. For example, proposed to anneal rails susceptible to corrugation in order to relieve stresses which were believed to be responsible for the formation of corrugations. Attempts have also been made to eliminate corrugation by means of metallurgical measures in the production of rail steel, in particular with regard to avoiding or reducing non-metallic elements in rail steels. Furthermore, it has been proposed according to DE-PS 19 03 753 to melt or re-melt or to partially re-corrugate or ripple-prone rails in the area of the running and / or guide surfaces, the re-melting or re-melting electrically by an arc between the rail to be treated and a consuming or non-consuming electrode. In the long run, none of these processes or measures brought the desired success. Measures to reduce wear, in which the running and / or guide surfaces consist of preferably welded austenitic material, had no influence on the corrugation.

Die Fülle von unterschiedlichen Theorien zur Entstehung und Vermeidung der Riffelbildung läßt sich auch durch das Buch "Die Eisenbahnschiene", Verlag von Wilhelm Ernst & Sohn, herausgegeben von Fritz Fastenrath, 1977, belegen. Von Seite 256 bis Seite 288 werden die verschiedensten Ursachen für die Entstehung von Riffeln diskutiert. Interessant ist dabei, daß man auch bei Forschungsvorhaben der jüngsten Zeit, z.B. dem Forschungsvorhaben "Erforschung der Grenzen des Rad/ Schiene-Systems", innerhalb der Voruntersuchungen zur Riffelbildung den Einfluß der Zusammensetzung des Stahles, aus dem die Schiene gebildet ist, in die Untersuchungen miteinbezogen hat. Dabei sind insbesondere auf Seite 271 des vorgenannten Buches folgende Schienen genannt:The abundance of different theories on the formation and avoidance of corrugation can also be proven by the book "Die Eisenbahnschiene", published by Wilhelm Ernst & Sohn, published by Fritz Fastenrath, 1977. From page 256 to page 288, a wide variety of causes for the formation of corrugations are discussed. It is interesting that even with recent research projects, such as the research project "Researching the limits of the wheel / rail system", within the preliminary examinations for the corrugation education has included the influence of the composition of the steel from which the rail is formed in the studies. The following rails are mentioned in particular on page 271 of the aforementioned book:

Schiene aus perlitischen Stählen mit 0,7 % Kohlenstoff und je etwa 1 % Mangan und ChromRail made of pearlitic steels with 0.7% carbon and each about 1% manganese and chrome

Schiene aus Zwischenstufenstählen mit 0,3 % Kohlenstoff und 2,5 % ChromRail made of intermediate steels with 0.3% carbon and 2.5% chromium

Schiene aus kohlenstoffarmen Stählen mit 0,07 % Kohlenstoff und 4,5 % ManganLow carbon steels with 0.07% carbon and 4.5% manganese

Schiene aus austenitischen Stählen mit Mangan-Gehalten über 10 %Austenitic steels with manganese contents over 10%

Aus all diesen Untersuchungen, Vermutungen und Theorien kann man nur den Eindruck gewinnen, daß letztlich bis heute eine einwandfreie Klärung des Riffelproblems nicht gelungen ist. Es besteht nach wie vor ein dringendes Bedürfnis, eine Schiene.zu finden, die keine Neigung zur Riffelbildung aufweist. Die Lösung dieser Aufgabe liegt vorliegender Erfindung zugrunde.From all these investigations, conjectures and theories, one can only get the impression that, until today, a perfect clarification of the ripple problem has not been successfully achieved. There is still an urgent need to find a rail that has no tendency to corrugate. This object is achieved by the present invention.

Die erfindungsgemäße Schiene, die keine Neigung zur Riffelbildung aufweist, ist dadurch gekennzeichnet, daß sie im Bereich der Lauf- und/oder Führungsflächen einen metallischen Werkstoff aufweist, dessen Dehn- bzw. Streckgrenze oberhalb der durch das Rad verursachten Flächenpressung liegt.The rail according to the invention, which has no tendency to corrugation, is characterized in that it has a metallic material in the area of the running and / or guiding surfaces, the yield or yield strength of which lies above the surface pressure caused by the wheel.

Dabei hat sich herausgestellt, daß es besonders vorteilhaft ist, wenn die Schiene im Bereich der Lauf- und/oder Führungsflächen aus einem durch Kaltformung nicht verfestigbaren Werkstoff besteht.It has been found that it is particularly advantageous if the rail does not solidify in the area of the running and / or guide surfaces from a cold-forming process ed material.

Als Werkstoffe haben sich Zusatzwerkstoffe bewährt, die im Schweißzustand martensitisches Gefüge mit Härten von 40 bis 60 HRC und Streckgrenzen aufweisen, die weit oberhalb der durch das Rad verursachten Flächenpressungen liegen. Geeignete Zusatzwerkstoffe-können folgende Zusammensetzung haben:

Figure imgb0001
oder
Figure imgb0002
 Additional materials have proven themselves as materials which, when welded, have a martensitic structure with hardnesses of 40 to 60 HRC and yield strengths which are far above the surface pressures caused by the wheel. Suitable filler materials - can have the following composition:
Figure imgb0001
 or
Figure imgb0002

Die Herstellung der erfindungsgemäßen riffelfreien Schiene kann dabei auf verschiedene Weise erfolgen. Als besonders geeignet hat sich die elektrische Auftragsschweißung zur Herstellung einer solchen Schiene erwiesen. Hierbei wird z.B. die Schiene im Bereich der Lauf- und/oder Führungsflächen auf 2 bis 3 mm Tiefe und ca. 20 bis 30 mm Breite mechanisch oder autogen ausgenommen, und die Ausnehmungen werden mit einem Schweißgut entsprechender Zusammensetzung ausgefüllt. Anschließend wird der Schienenkopf profilgerecht bearbeitet. Es ist auch möglich, ein Schweißgut ohne Ausnehmung aufzutragen und fahrgerecht zu beschleifen, so daß die Schweißnaht erhaben über das eigentliche Schienenprofil hinausragt.The grooved rail according to the invention can be produced in various ways. Electrical cladding has proven to be particularly suitable for producing such a rail. Here e.g. the rail in the area of the running and / or guiding surfaces is mechanically or autogenously cut to a depth of 2 to 3 mm and a width of about 20 to 30 mm, and the recesses are filled with a weld metal of the appropriate composition. The rail head is then machined to fit the profile. It is also possible to apply weld metal without a recess and to grind it so that it can be driven, so that the weld seam protrudes beyond the actual rail profile.

Es ist aber auch möglich, stabförmige Werkstoffe entsprechender Zusammensetzung in an sich bekannter Weise in die Schiene einzuwalzen oder auch zu kleben. Ferner ist es möglich, Werkstoffe entsprechender Eigenschaft und Zusammensetzung mit Hilfe der bekannten Verfahren aufzuspritzen.However, it is also possible to roll or glue rod-shaped materials of appropriate composition into the rail in a manner known per se. It is also possible to spray materials of appropriate properties and composition using the known methods.

Es ist auch möglich, die Dehn- bzw. Streckgrenzen normaler Schienenstähle in den Bereichen der Lauf- und/oder Führungsflächen durch Vergütung so anzuheben, daß sie oberhalb der durch das Rad verursachten Flächenpressungen liegen. Hierzu eignet sich z.B. der Plasma-Lichtbogen in besonderem Maße, da er die erforderliche schnelle Erhitzung mit nachfolgender beschleunigter Abkühlung erlaubt.It is also possible to increase the yield and yield limits of normal rail steels in the areas of the running and / or guide surfaces by means of tempering so that they are above the surface pressures caused by the wheel. For this, e.g. the plasma arc to a particular degree, since it allows the required rapid heating with subsequent accelerated cooling.

Unabhängig von der speziellen Arbeitsweise ist es nur wesentlich, Werkstoffzonen zu schaffen, deren Dehn- bzw. Streckgrenzen im Bereich der Lauf- und/oder Führungsflächen oberhalb der durch das Rad verursachten Flächenpressungen liegen.Regardless of the special mode of operation, it is only essential to create material zones whose expansion or yield limits in the area of the running and / or guide surfaces are above the surface pressures caused by the wheel.

Ausgedehnte Versuche und Erprobungen der erfindungsgemäßen Schiene haben gezeigt, daß auch über einen längeren Beobachtungszeitraum keine Riffeln'aufgetreten sind, wobei sich bei in einem Parallelgleis verlegten Schienen bekannter Zusammensetzung und üblicher Dehn- bzw. Streckgrenzen deutliche Riffeln bildeten. Es wurde auch der Versuch unternommen, innerhalb einer verriffelten Strecke ein längeres Schienenstück durch die erfindungsgemäße Schiene zu ersetzen; anschließend wurden die angrenzenden, verbliebenen verriffelten Schienen plangeschliffen. Es zeigte sich bereits nach kurzer Zeit, daß die erfindungsgemäße Schiene riffelfrei blieb, während die angrenzenden Schienen wieder Riffeln bekamen. Das gleiche Ergebnis wurde erzielt, als man anstelle der verriffelten und dann plangeschliffenen Schienen neue Schienen herkömmlicher Zusammensetzung wechselweise mit erfindungsgemäßen Schienen verlegte. Die konventionellen Schienen zeigten Riffelbildung, die dazwischen verlegte erfindungsgemäße Schiene verriffelte im Beobachtungszeitraum nicht.Extensive tests and trials of the rail according to the invention have shown that no corrugations have occurred even over a longer observation period, clear corrugations being formed in the case of rails of known composition laid down in a parallel track and with usual expansion and yield limits. An attempt was also made to replace a longer rail section with the rail according to the invention within a corrugated section; then the adjacent, remaining corrugated rails were surface-ground. It was shown after a short time that the rail according to the invention remained ripple-free, while the adjacent rails were again corrugated. The same result was achieved when new rails of conventional composition were replaced instead of the corrugated and then plane-ground rails alternatively laid with rails according to the invention. The conventional rails showed corrugation, the rail according to the invention laid between them did not corrugate during the observation period.

Die erfindungsgemäßen Schienen bieten sich deshalb besonders in den Gleisteilen an, welche besonders beansprucht werden und starke Riffelbildungen zu erwarten sind.The rails according to the invention therefore lend themselves particularly well to the track parts which are particularly stressed and strong corrugations are to be expected.

Claims (5)

1. Riffelfreie Schiene für spurgebundene Fahrzeuge, dadurch gekennzeichnet, daß die Schiene im Bereich der Lauf- und/oder Führungsflächen einen metallischen Werkstoff aufweist, dessen Dehn- bzw. Streckgrenze oberhalb der durch das Rad verursachten Flächenpressung liegt.1. corrugated rail for track-bound vehicles, characterized in that the rail has a metallic material in the area of the running and / or guide surfaces, the yield or yield strength of which lies above the surface pressure caused by the wheel. 2. Schiene gemäß Patentanspruch 1, dadurch gekennzeichnet, daß die Schiene im Bereich der Lauf- und/oder Führungsflächen aus einem durch Kaltformung nicht verfestigbaren Werkstoff besteht.2. Rail according to claim 1, characterized in that the rail in the area of the running and / or guide surfaces consists of a material that cannot be hardened by cold forming. 3. Schiene gemäß Patentansprüchen 1 oder 2, dadurch gekennzeichnet, daß der Werkstoff im Bereich der Lauf-und/oder Führungsflächen martensitisches Gefüge und eine Härte von 40 bis 60 HRC aufweist.3. Rail according to claims 1 or 2, characterized in that the material in the area of the running and / or guide surfaces has a martensitic structure and a hardness of 40 to 60 HRC. 4. Schiene gemäß einem oder mehreren der Patentansprüche l.bis 3, dadurch gekennzeichnet, daß der Werkstoff folgende Zusammensetzung aufweist:
Figure imgb0003
 4. Rail according to one or more of claims 1 to 3, characterized in that the material has the following composition:
Figure imgb0003
 5. Schiene gemäß einem oder mehreren der Patentansprüche 1 bis 3, dadurch gekennzeichnet, daß der Werkstoff folgende Zusammensetzung aufweist:
Figure imgb0004
 5. Rail according to one or more of claims 1 to 3, characterized in that the material has the following composition:
Figure imgb0004
EP80102198A 1979-07-11 1980-04-24 Rail without short pitch corrugations Expired EP0022451B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102198T ATE362T1 (en) 1979-07-11 1980-04-24 RIBBLE-FREE RAIL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2927890 1979-07-11
DE2927890A DE2927890C2 (en) 1979-07-11 1979-07-11 Rail for track-bound vehicles

Publications (2)

Publication Number Publication Date
EP0022451A1 true EP0022451A1 (en) 1981-01-21
EP0022451B1 EP0022451B1 (en) 1981-11-04

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US (1) US4389015A (en)
EP (1) EP0022451B1 (en)
AT (1) ATE362T1 (en)
DE (1) DE2927890C2 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP0156183A2 (en) * 1984-03-06 1985-10-02 Hitachi Metals, Ltd. Head for wire dot printer
WO1995000707A1 (en) * 1993-06-24 1995-01-05 British Steel Plc Rails
GB2288816A (en) * 1992-10-26 1995-11-01 Finkl & Sons Co Double stabilized stainless-type steel and method of manufacture thereof

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US4413959A (en) * 1981-10-19 1983-11-08 The Trane Company Scroll machine with flex member pivoted swing link
FR2521883B1 (en) * 1982-02-19 1985-08-30 Sacilor METHOD FOR DRESSING A RAILWAY RAIL AND DRESSE RAILWAY RAIL
AT383072B (en) * 1985-07-18 1987-05-11 Voest Alpine Ag METHOD FOR CONNECTING HEART PIECES MADE OF AUSTENITIC MANGANESE CHARCOAL STEEL TO RAILS MADE OF CARBON STEEL
DE19721818A1 (en) * 1997-05-26 1998-12-10 Schreck Mieves Gmbh Wear resistant rail points component
US20060032556A1 (en) * 2004-08-11 2006-02-16 Coastcast Corporation Case-hardened stainless steel foundry alloy and methods of making the same
CN110846942A (en) * 2019-10-24 2020-02-28 四川金虹等离子技术有限公司 Railway steel rail treated by laminar plasma technology
CN112501965B (en) * 2020-11-07 2021-11-26 西南交通大学 Method for controlling wavy abrasion of railway steel rail

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FR885862A (en) * 1941-11-22 1943-09-28 Bochumer Ver Fu R Gussstahlfab Two-steel rails
AT323224B (en) * 1970-10-02 1975-06-25 Wendel Sidelor METHOD OF HEAT TREATMENT OF A ROLLED RAIL
DE2064344B2 (en) * 1970-12-29 1976-02-12 Fried. Krupp Hüttenwerke AG, 4630 Bochum USE OF RAILS WITH A KNOWN COMPOSITION OF THE RAIL STEEL IN ORDER TO AVOID CORRUGATION

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DE537712C (en) * 1931-11-06 Ver Stahlwerke Akt Ges Process for the manufacture of rails
DE490283C (en) * 1928-02-28 1930-01-25 Ver Stahlwerke Akt Ges Rail with several rectilinear inserts made of hard steel in the head in the longitudinal direction
US1752566A (en) * 1928-12-10 1930-04-01 Welding Service Inc Rail joint
DE762326C (en) * 1935-11-24 1953-05-11 Maximilianshuette Eisenwerk Steel and heat treatment for rails
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR885862A (en) * 1941-11-22 1943-09-28 Bochumer Ver Fu R Gussstahlfab Two-steel rails
AT323224B (en) * 1970-10-02 1975-06-25 Wendel Sidelor METHOD OF HEAT TREATMENT OF A ROLLED RAIL
DE2064344B2 (en) * 1970-12-29 1976-02-12 Fried. Krupp Hüttenwerke AG, 4630 Bochum USE OF RAILS WITH A KNOWN COMPOSITION OF THE RAIL STEEL IN ORDER TO AVOID CORRUGATION

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156183A2 (en) * 1984-03-06 1985-10-02 Hitachi Metals, Ltd. Head for wire dot printer
EP0156183A3 (en) * 1984-03-06 1987-07-29 Hitachi Metals, Ltd. Head for wire dot printer
GB2288816A (en) * 1992-10-26 1995-11-01 Finkl & Sons Co Double stabilized stainless-type steel and method of manufacture thereof
GB2288816B (en) * 1992-10-26 1998-08-05 Finkl & Sons Co Double stabilized stainless-type steel and method of manufacture thereof
WO1995000707A1 (en) * 1993-06-24 1995-01-05 British Steel Plc Rails
GB2295179A (en) * 1993-06-24 1996-05-22 British Steel Plc Rails
GB2295179B (en) * 1993-06-24 1996-10-30 British Steel Plc Rails

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DE2927890A1 (en) 1981-01-15
DE2927890C2 (en) 1983-12-22
US4389015A (en) 1983-06-21
ATE362T1 (en) 1981-11-15
EP0022451B1 (en) 1981-11-04

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