EP0716185A1 - Method of producing a frog point as well as frog point - Google Patents

Method of producing a frog point as well as frog point Download PDF

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Publication number
EP0716185A1
EP0716185A1 EP95118492A EP95118492A EP0716185A1 EP 0716185 A1 EP0716185 A1 EP 0716185A1 EP 95118492 A EP95118492 A EP 95118492A EP 95118492 A EP95118492 A EP 95118492A EP 0716185 A1 EP0716185 A1 EP 0716185A1
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EP
European Patent Office
Prior art keywords
tip
weight
rail sections
sections
tip 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
EP95118492A
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German (de)
French (fr)
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EP0716185B1 (en
Inventor
Gerhard Ratz
Stefan Dipl.-Ing. Schmedders
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Voestalpine Turnout Technology Germany GmbH
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Voestalpine BWG GmbH
Butzbacher Weichenbau GmbH
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Publication of EP0716185A1 publication Critical patent/EP0716185A1/en
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00—Switches; Crossings
    • E01B7/10—Frogs
    • 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
    • C21D2251/00—Treating composite or clad material

Definitions

  • the invention relates to a method for producing a frog tip consisting of a tip section such as a block tip and welded connection rails such as control rails, the tip section and the connection rails being made of different materials such as steels. Furthermore, the invention relates to a frog tip consisting of a tip section such as block tip and preferably butt-welded connection rails such as control rails.
  • the core of switches or crossings is the intersection of the rail tracks.
  • the frog tips present in the area of the rail gaps are exposed to high wear, so that this area is formed from solid materials such as special steel or manganese.
  • the connecting rails adjoining the tip section which are made of conventional rail material, can be butt-welded, provided the different materials allow this.
  • the individual parts are tempered before welding. Due to the different materials, however, undefined heat transfer zones form in the area of the welding surfaces, which in the areas lead to ambiguously defined or desired material properties such as tensile strength, flexural fatigue strength, yield strength or fracture toughness.
  • the problem on which the present invention is based is to further develop a method for producing a frog tip and such itself in such a way that defined material properties are ensured after welding, without the need for complex manufacturing measures.
  • the problem is solved by a method of the type mentioned in the introduction in that after the connecting rail sections have been welded to the tip section, they are remunerated as a unit.
  • the centerpiece tip is tempered as a unit and not its parts made of different materials.
  • the undefined heat transfer zones that occur during welding are thus healed.
  • the frog tip has a high strength in its approach area.
  • a special steel is used as the tip section and a material of conventional control rails such as Vignol rails is used as the connecting rail section.
  • the unit is remunerated in such a way that the tip region has a martensitic structure and the connecting rail sections have a pearlitic structure.
  • a frog tip described above is characterized in that the frog tip is tempered as a unit, the tip section having a martensitic structure and the welded-on connecting rail sections having a pearlitic structure.
  • the material of the connecting bar sections is an analysis steel with at least 0.73 to 0.79 percent by weight C, 0.86 to 0.99 percent by weight Mn, 0.21 to 0.32 percent by weight Si, 0.07 to 0.025 percent by weight P , 0.008 to 0.022 percent by weight of S, 0.02 to 0.14 percent by weight of Cr and 0.000 percent by weight of Nb, as well as usual impurities due to melting.
  • the material of the tip section is preferably a vacuum-treated steel with at least 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1.1% by weight of Mn , 0.8 to 1.3% by weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V, ⁇ 0.02 %
  • P optionally up to 0.025% by weight of Al, optionally 0.5% by weight of Nb, residual iron and usual melting-related impurities, the ratio of Mn to Cr being approximately 0.80 ⁇ Mn: Cr ⁇ 0.85 and that Mo to V ratio is approximately 1.
  • the tip region, on the one hand, and the connecting rail sections, on the other hand merge flush into one another in the region of their adjacent welding surfaces.
  • the tip area is worked out on the connection rail side for geometrical adaptation to the welding surfaces of the connection rail sections.
  • a plan view of a frog tip (10) is shown, which is composed of a front tip section in the form of a block tip (12) and butt welded to this connecting rail sections (14) and (16).
  • the block tip is 12 weld butt welded to the connecting rail sections (14) and (16) along the line BB.
  • the block tip (12) consists of a special steel, which is a vacuum-treated steel with 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1, 1% by weight Mn, 0.8 to 1.3% by weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V ⁇ 0.02% by weight P, optionally up to 0.025% by weight of Al, optionally 0.5% by weight of Nb, residual iron as well as usual melting-related impurities, the ratio of Mn to Cr being approximately 0.80 ⁇ Mn: Cr ⁇ 0.85 and the ratio of Mo to V is approximately 1.
  • a special steel which is a vacuum-treated steel with 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1, 1% by weight Mn, 0.8 to 1.3% by weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V ⁇ 0.02% by weight P, optionally up to 0.025% by weight of Al
  • the connecting rails (14) and (16) consist of a steel which can be used for standard-like Vignol rails and an analysis with at least 0.73 to 0.79% by weight of C, 0.86 to 0.99% by weight of Mn , 0.21 to 0.32% by weight of Si, 0.07 to 0.025% by weight of P, 0.008 to 0.022% by weight of S, 0.02 to 0.14% by weight of Cr and 0.000% by weight of Nb, and customary ones has contamination due to melting.
  • the block tip (12) with the connecting rail section is provided according to the invention (14) and (16) are first butt welded and then the unit thus formed is itself tempered.
  • the block tip (12) has in its end face (18) facing the rail sections (14), (16) a geometry that corresponds to the area of the facing abutting surfaces (20) and (22) of the connecting rail sections (14) and (16).
  • the block tip (12) is worked out on the one hand in the central area (reference number (26)) and on the other hand in the flank area (reference number (28)) and (30).
  • the depth of the finish (26) corresponding to an oval in the direction of the longitudinal axis (24) of the block tip (12) is approximately one third to two thirds, preferably approximately half the width of the block tip (12) in the region its end face (18).
  • the lateral elaborations (28) and (30) extend approximately over a length of the block tip (12), which corresponds approximately to the width of the block tip (12) in its end face (18).

Abstract

Points for a rail system are made by welding together a head section (12) and rail sections (14, 16) which are made from different types of steel. After welding, the welded unit is heat treated to produce the required crystal structures in the different sections. The shape of the different sections is such that they fit tightly into each other before welding. The rail sections are made of rail steel containing (in wt.%): 0.73-0.79 C, 0.86-0.99 Mn, 0.21-0.32 Si, 0.07-0.025 P, 0.008-0.022 S, 0.02-0.14 Cr and 0.000 Nb (sic) plus usual melting impurities. The head section is made of a special steel contg. 0.53-0.62 C, 0.15-0.25 Si, 0.65-1.1 Mn, 0.8-1.3 Cr, 0.05-0.11 Mo, 0.05-0.11 V, max. 0.02 P, max. 0.025 Al, 0.5 Nb, balance Fe and usual impurities. The ratio of Mn to Cr is min. 0.8 Mn:max. 0.85 Cr and that of Mo to V is approx. 1. After heat treating, the head section is martensitic and the rail sections pearlitic.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Herstellen einer Herzstückspitze bestehend aus Spitzenabschnitt wie Blockspitze und angeschweißten Anschlußschienen wie Regelschienen, wobei der Spitzenabschnitt und die Anschlußschienen aus unterschiedlichen Materialien wie Stählen bestehen. Ferner bezieht sich die Erfindung auf eine Herzstückspitze bestehend aus einem Spitzenabschnitt wie Blockspitze sowie an diesem vorzugsweise stumpf angeschweißten Anschlußschienen wie Regelschienen.The invention relates to a method for producing a frog tip consisting of a tip section such as a block tip and welded connection rails such as control rails, the tip section and the connection rails being made of different materials such as steels. Furthermore, the invention relates to a frog tip consisting of a tip section such as block tip and preferably butt-welded connection rails such as control rails.

Herzstücke ergeben sich bei Weichen oder Kreuzungen durch Überschneidungen der Schienenstränge. Die in, Bereich der Schienenlücken vorhandenen Herzstückspitzen sind dabei einem hohen Verschleiß ausgesetzt, so daß dieser Bereich aus festen Materialien wie Sonderstahl oder Mangan ausgebildet wird. Die sich an den Spitzenabschnitt anschließenden Anschlußschienen, die aus üblichem Schienenmaterial bestehen, können stumpf angeschweißt werden, sofern die unterschiedlichen Materialien dies zulassen.The core of switches or crossings is the intersection of the rail tracks. The frog tips present in the area of the rail gaps are exposed to high wear, so that this area is formed from solid materials such as special steel or manganese. The connecting rails adjoining the tip section, which are made of conventional rail material, can be butt-welded, provided the different materials allow this.

Vor dem Verschweißen werden die einzelnen Teile vergütet. Aufgrund der unterschiedlichen Materialien bilden sich jedoch in dem Bereich der Schweißflächen undefinierte Wärmeübergangszonen aus, die in den Bereichen zu nicht eindeutig definierten bzw. gewünschten Materialeigenschaften wie Zugfestigkeit, Biegewechselfestigkeit, Streckgrenze oder Rißzähigkeit führen.The individual parts are tempered before welding. Due to the different materials, however, undefined heat transfer zones form in the area of the welding surfaces, which in the areas lead to ambiguously defined or desired material properties such as tensile strength, flexural fatigue strength, yield strength or fracture toughness.

Der vorliegenden Erfindung liegt das Problem zugrunde, ein Verfahren zur Herstellung einer Herzstückspitze und eine solche selbst derart weiterzubilden, daß nach dem Verschweißen definierte Materialeigenschaften sichergestellt sind, ohne daß herstellungstechnisch aufwendige Maßnahmen erforderlich sind.The problem on which the present invention is based is to further develop a method for producing a frog tip and such itself in such a way that defined material properties are ensured after welding, without the need for complex manufacturing measures.

Erfindungsgemäß wird das Problem durch ein Verfahren der eingangs genannten Art dadurch gelöst, daß nach Anschweißen der Anschlußschienenabschnitte an den Spitzenabschnitt diese als Einheit vergütet werden.According to the invention, the problem is solved by a method of the type mentioned in the introduction in that after the connecting rail sections have been welded to the tip section, they are remunerated as a unit.

Abweichend vom vorbekannten Stand der Technik erfolgt ein Vergüten der Herzstückspitze als Einheit und nicht deren aus unterschiedlichen Materialien bestehenden Teile für sich. Die beim Verschweißen auftretenden undefinierten Wärmeübergangszonen werden somit geheilt. Gleichzeitig ist sichergestellt, daß die Herzstückspitze in ihrem Anfahrbereich eine hohe Festigkeit aufweist.Deviating from the prior art, the centerpiece tip is tempered as a unit and not its parts made of different materials. The undefined heat transfer zones that occur during welding are thus healed. At the same time it is ensured that the frog tip has a high strength in its approach area.

Insbesondere ist vorgesehen, daß als Spitzenabschnitt ein Sonderstahl und als Anschlußschienenabschnitt ein Material üblicher Regel- wie Vignolschienen verwendet werden. Dabei erfolgt eine Vergütung der Einheit derart, daß der Spitzenbereich martensitisches und die Anschlußschienenabschnitte perlitisches Gefüge aufweisen.In particular, it is provided that a special steel is used as the tip section and a material of conventional control rails such as Vignol rails is used as the connecting rail section. The unit is remunerated in such a way that the tip region has a martensitic structure and the connecting rail sections have a pearlitic structure.

Eine Herzstückspitze zuvor beschriebener Alt zeichnet sich dadurch aus, daß die Herzstückspitze als Einheit vergütet ist, wobei der Spitzenabschnitt martensitisches Gefüge und die angeschweißten Anschlußschienenabschnitte perlitisches Gefüge aufweisen. Insbesondere ist das Material der Anschlußschienenabschnitte ein Stahl einer Analyse mit zumindest 0,73 bis 0,79 Gewichtsprozent C, 0,86 - 0,99 % Gewichtsprozent Mn, 0,21 bis 0,32 Gewichtsprozent Si, 0,07 bis 0,025 Gewichtsprozent P, 0,008 bis 0,022 Gewichtsprozent S, 0,02 bis 0,14 Gewichtsprozent Cr und 0,000 Gewichtsprozent Nb sowie üblichen erschmelzungsbedingten Verunreinigungen.A frog tip described above is characterized in that the frog tip is tempered as a unit, the tip section having a martensitic structure and the welded-on connecting rail sections having a pearlitic structure. In particular, the material of the connecting bar sections is an analysis steel with at least 0.73 to 0.79 percent by weight C, 0.86 to 0.99 percent by weight Mn, 0.21 to 0.32 percent by weight Si, 0.07 to 0.025 percent by weight P , 0.008 to 0.022 percent by weight of S, 0.02 to 0.14 percent by weight of Cr and 0.000 percent by weight of Nb, as well as usual impurities due to melting.

Bei dem Material des Spitzenabschnittes handelt es sich vorzugsweise um einen vakuumbehandelten Stahl mit zumindest 0,53 bis 0,62 Gew.% C, 0,15 bis 0,25 Gew.% Si, 0,65 bis 1,1 Gew.% Mn, 0,8 bis 1,3 Gew.% Cr, 0,05 bis 0,11 Gew.% Mo, 0,05 bis 0,11 Gew.% V, ≦ 0,02 Gew.% P, wahlweise bis 0,025 Gew.% Al, wahlweise 0,5 Gew.% Nb, Resteisen sowie üblichen erschmelzungsbedingten Verunreinigungen, wobei das Verhältnis von Mn zu Cr in etwa 0,80 ≦ Mn : Cr ≦ 0,85 und das Verhältnis von Mo zu V in etwa 1 beträgt.The material of the tip section is preferably a vacuum-treated steel with at least 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1.1% by weight of Mn , 0.8 to 1.3% by weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V, ≦ 0.02 % By weight of P, optionally up to 0.025% by weight of Al, optionally 0.5% by weight of Nb, residual iron and usual melting-related impurities, the ratio of Mn to Cr being approximately 0.80 ≦ Mn: Cr ≦ 0.85 and that Mo to V ratio is approximately 1.

In einer besonders hervorzuhebenden Ausgestaltung der Erfindung gehen der Spitzenbereich einerseits und die Anschlußschienenabschnitte andererseits im Bereich ihrer aneinanderliegenden Schweißflächen bündig ineinander über. Hierdurch ergibt sich der Vorteil, daß auf einfache Weise ein Stumpfschweißen möglich ist. Dabei ist insbesondere der Spitzenbereich anschlußschienenseitig zur geometrischen Anpassung an die Schweißflächen der Anschlußschienenabschnitte ausgearbeitet.In a particularly noteworthy embodiment of the invention, the tip region, on the one hand, and the connecting rail sections, on the other hand, merge flush into one another in the region of their adjacent welding surfaces. This has the advantage that butt welding is possible in a simple manner. In particular, the tip area is worked out on the connection rail side for geometrical adaptation to the welding surfaces of the connection rail sections.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich nicht nur aus den Ansprüchen, den diesen zu entnehmenden Merkmale - für sich und/oder in Kombination -, sondern auch aus der nachfolgenden Beschreibung eines der Zeichnung zu entnehmenden bevorzugten Ausführungsbeispiels.Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - by themselves and / or in combination - but also from the following description of a preferred embodiment to be taken from the drawing.

Es zeigen:

Fig. 1
eine Draufsicht auf eine Herzstückspitze,
Fig. 2
eine Seitenansicht der Herzstückspitze nach Fig. 1 im Ausschnitt,
Fig. 3
eine vergrößerte Darstellung eines Ausschnitts der Herzstückspitze nach Fig. 1,
Fig. 4
ein Schnitt entlang der Linie AA in Fig. 1 und
Fig. 5
ein Schnitt entlang der Linie BB in Fig. 1.
Show it:
Fig. 1
a top view of a frog tip,
Fig. 2
2 shows a side view of the frog tip according to FIG. 1,
Fig. 3
2 shows an enlarged illustration of a section of the frog tip according to FIG. 1,
Fig. 4
a section along the line AA in Fig. 1 and
Fig. 5
a section along the line BB in Fig. 1st

In Fig. 1 ist eine Draufsicht einer Herzstückspitze (10) dargestellt, die sich aus einem vorderen Spitzenabschnitt in Form einer Blockspitze (12) und mit diesem stumpf verschweißten Anschlußschienenabschnitten (14) und (16) zusammensetzt. Dabei ist die Blockspitze 12 mit den Anschlußschienenabschnitten (14) und (16) entlang der Linie BB abbrennstumpf verschweißt.In Fig. 1 a plan view of a frog tip (10) is shown, which is composed of a front tip section in the form of a block tip (12) and butt welded to this connecting rail sections (14) and (16). The block tip is 12 weld butt welded to the connecting rail sections (14) and (16) along the line BB.

Erfindungsgemäß besteht die Blockspitze (12) aus einem Sonderstahl, bei dem es sich um einen vakuumbehandelten Stahl mit 0,53 bis 0,62 Gew.% C, 0,15 bis 0,25 Gew.% Si, 0,65 bis 1,1 Gew.% Mn, 0,8 bis 1,3 Gew.% Cr, 0,05 bis 0,11 Gew.% Mo, 0,05 bis 0,11 Gew.% V ≦ 0,02 Gew.% P, wahlweise bis 0,025 Gew.% Al, wahlweise 0,5 Gew.% Nb, Resteisen sowie übliche erschmelzungsbedingte Verunreinigungen handelt, wobei das Verhältnis von Mn zu Cr in etwa 0,80 ≦ Mn : Cr ≦ 0,85 beträgt und das Verhältnis von Mo zu V in etwa 1 beträgt.According to the invention, the block tip (12) consists of a special steel, which is a vacuum-treated steel with 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1, 1% by weight Mn, 0.8 to 1.3% by weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V ≦ 0.02% by weight P, optionally up to 0.025% by weight of Al, optionally 0.5% by weight of Nb, residual iron as well as usual melting-related impurities, the ratio of Mn to Cr being approximately 0.80 ≦ Mn: Cr ≦ 0.85 and the ratio of Mo to V is approximately 1.

Demgegenüber bestehen die Anschlußschienen (14) und (16) aus einem Stahl, der für Regelwie Vignolschienen benutzt werden kann und eine Analyse mit zumindest 0,73 bis 0,79 Gew.% C, 0,86 bis 0,99 Gew.% Mn, 0,21 bis 0,32 Gew.% Si, 0,07 bis 0,025 Gew.% P, 0,008 bis 0,022 Gew.% S, 0,02 bis 0,14 Gew.% Cr und 0,000 Gew.% Nb sowie übliche erschmelzungsbedingte Verunreinigungen besitzt.In contrast, the connecting rails (14) and (16) consist of a steel which can be used for standard-like Vignol rails and an analysis with at least 0.73 to 0.79% by weight of C, 0.86 to 0.99% by weight of Mn , 0.21 to 0.32% by weight of Si, 0.07 to 0.025% by weight of P, 0.008 to 0.022% by weight of S, 0.02 to 0.14% by weight of Cr and 0.000% by weight of Nb, and customary ones has contamination due to melting.

Uni die den Anfahrbereich der Herzstückspitze (10) bildende Blockspitze (12) verschleißfest auszubilden, weist diese ein martensitisches Gefüge auf, wohingegen die Anschlußschienenabschnitte (14), (16) ein perlitisches Gefüge besitzen.Uni to form the block tip (12) forming the approach area of the frog tip (10) so that it is wear-resistant, it has a martensitic structure, whereas the connecting rail sections (14), (16) have a pearlitic structure.

Damit verhindert wird, daß aufgrund des Stumpfschweißens undefinierte Wärmeübergangszonen sowohl in der Blockspitze (12) als auch in den Anschlußschienenabschnitten (14) und (16) auftreten, die zu Gefügestörungen führen können, ist erfindungsgemäß vorgesehen, daß die Blockspitze (12) mit dem Anschlußschienenabschnitt (14) und (16) erst stumpf verschweißt und sodann die so gebildete Einheit an sich vergütet wird.To prevent undefined heat transfer zones occurring in the block tip (12) and in the connecting rail sections (14) and (16) due to butt welding, which can lead to structural defects, the block tip (12) with the connecting rail section is provided according to the invention (14) and (16) are first butt welded and then the unit thus formed is itself tempered.

Um ein einfaches Verschweißen zwischen der Blockspitze (12) und den Anschlußschienenabschnitten (14) und (16) zu ermöglichen, weisen die aneinanderliegenden Schweißflächen gleiche Geometrien auf, wie die Fig. 4 und 5 verdeutlichen sollen. So weist die Blockspitze (12) in ihrer den Schienenabschnitten (14), (16) zugewandten Stirnfläche (18) eine Geometrie auf, die der Fläche der zugewandten Stoßflächen (20) und (22) der Anschlußschienenabschnitte (14) und (16) entspricht.In order to enable simple welding between the block tip (12) and the connecting rail sections (14) and (16), the adjacent welding surfaces have the same geometries as are intended to illustrate FIGS. 4 and 5. The block tip (12) has in its end face (18) facing the rail sections (14), (16) a geometry that corresponds to the area of the facing abutting surfaces (20) and (22) of the connecting rail sections (14) and (16).

Uni eine entsprechende Geometrie der Stirnfläche (18) zu erzielen, ist die Blockspitze (12) einerseits im Mittelbereich (Bezugszeichen (26)) und andererseits im Flankenbereich (Bezugszeichen (28)) und (30) ausgearbeitet.In order to achieve a corresponding geometry of the end face (18), the block tip (12) is worked out on the one hand in the central area (reference number (26)) and on the other hand in the flank area (reference number (28)) and (30).

Die Tiefe der im mittleren Abschnitt einem Oval entsprechenden Ausarbeitung (26) in Richtung der Längsachse (24) der Blockspitze (12) beläuft sich in etwa auf ein Drittel bis zwei Drittel, vorzugsweise in etwa der Hälfte der Breite der Blockspitze (12) im Bereich ihrer Stirnfläche (18). Die seitlichen Ausarbeitungen (28) und (30) erstrecken sich in etwa über eine Länge der Blockspitze (12), die in etwa der Breite der Blockspitze (12) in ihrer Stirnfläche (18) entspricht.The depth of the finish (26) corresponding to an oval in the direction of the longitudinal axis (24) of the block tip (12) is approximately one third to two thirds, preferably approximately half the width of the block tip (12) in the region its end face (18). The lateral elaborations (28) and (30) extend approximately over a length of the block tip (12), which corresponds approximately to the width of the block tip (12) in its end face (18).

Claims (9)

Verfahren zum Herstellen einer Herzstückspitze (10) mit Spitzenabschnitt wie Blockspitze (12) und angeschweißten Anschlußschienenabschnitten (14, 16), wobei der Spitzenabschnitt und die Anschlußschienenabschnitte aus unterschiedlichen Materialien wie Stählen bestehen,
dadurch gekennzeichnet,
daß nach Anschweißen der Anschlußschienenabschnitte (14, 16) an den Spitzenabschnitt (12) diese als Einheit vergütet werden.Method for producing a frog tip (10) with a tip section such as a block tip (12) and welded-on connecting bar sections (14, 16), the tip section and the connecting bar sections being made of different materials such as steels,
characterized by
that after welding the connecting rail sections (14, 16) to the tip section (12), these are remunerated as a unit. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß als Spitzenabschnitt (12) ein Sonderstahl und als Anschlußschienenabschnitte (14, 16) ein Material üblicher Regel- wie Vignolschienen verwendet werden.Method according to claim 1,
characterized by
that a special steel is used as the tip section (12) and a material of conventional control and Vignol rails is used as the connecting rail sections (14, 16). Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die aus dem Spitzenabschnitt (12) und den angeschweißten Anschlußschienenabschnitten (14, 16) bestehende Einheit derart vergütet wird, daß der Spitzenabschnitt martensitisches und die Anschlußschienenabschnitte perlitisches Gefüge aufweisen.The method of claim 1 or 2,
characterized by
that the unit consisting of the tip section (12) and the welded-on connecting rail sections (14, 16) is coated in such a way that the tip section has a martensitic structure and the connecting rail sections have pearlitic structures. Herzstückspitze (10) bestehend aus einem Spitzenabschnitt wie Blockspitze (12) sowie an diesem vorzugsweise stumpf angeschweißten Anschlußschienenabschnitten (14, 16),
dadurch gekennzeichnet,
daß die Herzstückspitze (10) als Einheit vergütet worden ist, wobei der Spitzenabschnitt (12) martensitisches Gefüge und die angeschweißten Anschlußschienenabschnitte (14, 16) perlitisches Gefüge aufweisen.Centerpiece tip (10) consisting of a tip section such as block tip (12) and connecting bar sections (14, 16) which are preferably butt-welded thereto,
characterized by
that the frog tip (10) has been tempered as a unit, the tip section (12) having a martensitic structure and the welded-on connecting rail sections (14, 16) having a pearlitic structure. Herzstückspitze nach Anspruch 4,
dadurch gekennzeichnet,
daß der Spitzenabschnitt (12) ein Sonderstahl und die Anschlußschienenabschnitte (14, 16) ein Schienenstahl sind.Centerpiece tip according to claim 4,
characterized by
that the tip section (12) is a special steel and the connecting rail sections (14, 16) are a rail steel. Herzstückspitze nach zumindest Anspruch 5,
dadurch gekennzeichnet,
daß der Schienenstahl eine Analyse mit zumindest 0,73 bis 0,79 Gew.% C, 0,86 bis 0,99 Gew.% Mn, 0,21 bis 0,32 Gew.% Si, 0,07 bis 0,025 Gew.% P, 0,008 bis 0,022 Gew.% S, 0,02 bis 0,14 Gew.% Cr und 0,000 Gew.% Nb sowie üblichen erschmelzungsbedingten Verunreinigungen besitzt.Centerpiece tip according to at least claim 5,
characterized by
that the rail steel has an analysis with at least 0.73 to 0.79 wt.% C, 0.86 to 0.99 wt.% Mn, 0.21 to 0.32 wt.% Si, 0.07 to 0.025 wt. % P, 0.008 to 0.022% by weight of S, 0.02 to 0.14% by weight of Cr and 0.000% by weight of Nb, as well as usual melting-related impurities. Herzstückspitze nach zumindest Anspruch 5,
dadurch gekennzeichnet,
daß der Sonderstahl ein vakuumbehandelter Stahl mit 0,53 bis 0,62 Gew.% C, 0,15 bis 0,25 Gew.% Si, 0,65 bis 1,1 Gew.% Mn, 0,8 bis 1,3 Gew.% Cr, 0,05 bis 0,11 Gew.% Mo, 0,05 bis 0,11 Gew.% V ≦ 0,02 Gew.% P, wahlweise bis 0,025 Gew.% Al, wahlweise 0,5 Gew.% Nb, Resteisen sowie üblichen erschmelzungsbedingten Verunreinigungen ist, wobei das Verhältnis von Mn zu Cr in etwa 0,80 ≦ Mn : Cr ≦ 0,85 beträgt und das Verhältnis von Mo zu V in etwa 1 beträgt.Centerpiece tip according to at least claim 5,
characterized by
that the special steel is a vacuum-treated steel with 0.53 to 0.62% by weight of C, 0.15 to 0.25% by weight of Si, 0.65 to 1.1% by weight of Mn, 0.8 to 1.3 % By weight Cr, 0.05 to 0.11% by weight Mo, 0.05 to 0.11% by weight V ≦ 0.02% by weight P, optionally up to 0.025% by weight Al, optionally 0.5% by weight .% Nb, residual iron and usual melting-related impurities, the ratio of Mn to Cr being approximately 0.80 ≦ Mn: Cr ≦ 0.85 and the ratio of Mo to V being approximately 1. Herzstückspitze nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Spitzenabschnitt (12) einerseits und die Anschlußschienenabschnitte (14, 16) andererseits in ihren aufeinanderliegenden Schweißflächen bündig ineinander übergehen.Centerpiece tip according to at least one of the preceding claims,
characterized by
that the tip section (12) on the one hand and the connecting rail sections (14, 16) on the other hand, they merge flush into one another in their superimposed welding surfaces. Herzstückspitze nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Spitzenabschnitt (12) in Form einer Blockspitze anschweißseitig zur geometrischen Anpassung an die Schweißflächen der Anschlußschienenabschnitte (14, 16) ausgearbeitet ist.Centerpiece tip according to at least one of the preceding claims,
characterized by
that the tip section (12) is worked out in the form of a block tip on the welding side for geometrical adaptation to the welding surfaces of the connecting rail sections (14, 16).
EP95118492A 1994-11-29 1995-11-24 Method of producing a frog point as well as frog point Expired - Lifetime EP0716185B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4442415 1994-11-29
DE4442415A DE4442415A1 (en) 1994-11-29 1994-11-29 Process for producing a frog tip and frog tip

Publications (2)

Publication Number Publication Date
EP0716185A1 true EP0716185A1 (en) 1996-06-12
EP0716185B1 EP0716185B1 (en) 2001-02-28

Family

ID=6534425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118492A Expired - Lifetime EP0716185B1 (en) 1994-11-29 1995-11-24 Method of producing a frog point as well as frog point

Country Status (7)

Country Link
EP (1) EP0716185B1 (en)
AT (1) ATE199417T1 (en)
DE (2) DE4442415A1 (en)
DK (1) DK0716185T3 (en)
ES (1) ES2155867T3 (en)
GR (1) GR3035868T3 (en)
PT (1) PT716185E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998007928A1 (en) * 1996-08-21 1998-02-26 Hubmann, Hans-Peter Crossing assembly for point switches and processing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621017C1 (en) * 1996-05-24 1998-01-08 Butzbacher Weichenbau Gmbh Process for the production of a track superstructure and track superstructure
DE102008023038B3 (en) * 2008-05-09 2009-06-25 Db Netz Ag A method of manufacturing a centerpiece having a tip block and two terminal track sections adjoining the tip block and joined to a center block, and heart

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1889837U (en) * 1963-11-02 1964-03-26 Schreck Mieves K G SOFT HEART PIECE.
BE702087A (en) 1966-08-16 1968-01-02
DE1284439B (en) 1966-01-07 1968-12-05 Kloeckner Werke Ag Heart piece with a block-like heart piece tip
DE1534054B1 (en) * 1966-09-22 1969-09-18 Kloeckner Werke Ag Center piece made of manganese steel
DE2706697B1 (en) * 1977-02-17 1977-11-17 Kloeckner Werke Ag Joining austenitic manganese steel to steel rail - by means of butt welding and using an austenitic steel intermediate piece which is aged

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
AT350881B (en) * 1977-08-19 1979-06-25 Voest Ag METHOD OF CONNECTING CASTING AUSMANGAN CAST STEEL TO SPINS MADE OF CARBON STEEL

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1889837U (en) * 1963-11-02 1964-03-26 Schreck Mieves K G SOFT HEART PIECE.
DE1284439B (en) 1966-01-07 1968-12-05 Kloeckner Werke Ag Heart piece with a block-like heart piece tip
BE702087A (en) 1966-08-16 1968-01-02
DE1534054B1 (en) * 1966-09-22 1969-09-18 Kloeckner Werke Ag Center piece made of manganese steel
DE2706697B1 (en) * 1977-02-17 1977-11-17 Kloeckner Werke Ag Joining austenitic manganese steel to steel rail - by means of butt welding and using an austenitic steel intermediate piece which is aged

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998007928A1 (en) * 1996-08-21 1998-02-26 Hubmann, Hans-Peter Crossing assembly for point switches and processing
US6340140B1 (en) 1996-08-21 2002-01-22 Oswald Lochschmidt Railroad frog for switch points and crossings

Also Published As

Publication number Publication date
DE59509058D1 (en) 2001-04-05
DK0716185T3 (en) 2001-06-18
EP0716185B1 (en) 2001-02-28
GR3035868T3 (en) 2001-08-31
ATE199417T1 (en) 2001-03-15
PT716185E (en) 2001-08-30
DE4442415A1 (en) 1996-05-30
ES2155867T3 (en) 2001-06-01

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