EP2734318B1 - Roll for a ring rolling mill - Google Patents
Roll for a ring rolling mill Download PDFInfo
- Publication number
- EP2734318B1 EP2734318B1 EP12735873.7A EP12735873A EP2734318B1 EP 2734318 B1 EP2734318 B1 EP 2734318B1 EP 12735873 A EP12735873 A EP 12735873A EP 2734318 B1 EP2734318 B1 EP 2734318B1
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- EP
- European Patent Office
- Prior art keywords
- roll
- cap
- roller
- accordance
- base body
- 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.)
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Links
- 238000005096 rolling process Methods 0.000 title claims description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Definitions
- the invention relates to a roller for a ring rolling mill.
- An axial roller according to the preamble of claim 1 is for example from the DE 38 40 020 A1 known.
- a ring rolling mill is a rolling mill, with which ring blanks are rolled by radial expansion into rings of the desired cross-section.
- the ring blanks are obtained z. B. by upsetting, punching and / or forging.
- Such a ring rolling mill generally has at least one driven main roller or plate roller acting on the ring outer side and a mandrel roller or a roller mandrel acting on the ring inner side.
- On the ring end faces usually act two axial rolls z. B. be referred to as upper axial roller and lower axial roller.
- These axial rollers are generally conical in shape, they are also referred to as tapered rollers. Structure and operation of such ring rolling mills have long been known. This also applies to the usual drives.
- Ring rolling mills of the type described above are z. B. from the DE 1 188 544 or the DE 1 019 635 known.
- the invention has for its object to provide a roller for a ring mill, which can be economically and variably produced and used. In particular, an economical processing in the high temperature range should be possible.
- the invention teaches in a generic roller for a ring rolling mill, that the rollers have a roller body and a patch on the roller body roller cap.
- This roller cap is detachably and interchangeably mounted on the roller body, z. B. plugged or postponed.
- the invention relates to an axial roller and consequently tapered roller of such a ring rolling mill.
- the roller cap has a conical outer surface, which forms the working surface.
- the roller cap has an inner surface which rests against the outer surface of the roller body.
- this inner surface is preferably formed conical, so that the roller cap is formed in a particularly preferred embodiment, a hollow cone-shaped or cone-shaped with predetermined wall thickness.
- the invention is based on the recognition that a separately exchangeable component is made available by realization of the roller cap, which can be optimally adapted to the given requirements.
- a separately exchangeable component is made available by realization of the roller cap, which can be optimally adapted to the given requirements.
- higher-alloyed hot-work steels and in particular nickel-based alloys are significantly more expensive than "simple" work steels or hot-work steels, the rolls can be produced significantly more cheaply overall.
- conventional rollers for. B. tapered rollers total weight of several tons, z. B. more than 10 tons.
- the inventively proposed roller cap has a significantly lower weight, so that it can also be produced significantly cheaper. This is particularly interesting because it is a wear part in the roller. According to the invention, it is no longer necessary to replace the entire roll (including the shaft, which is usually integrally formed thereon), but instead only replace the roll cap. This is advantageous not only in the use of higher alloyed hot work steels and nickel base alloys, but also in other materials.
- the invention is therefore not limited to ring rolling mills for high temperature applications, but also includes ring rolling mills for rolling mild steel. Even though this does not pose the problem of the high temperatures of the roll surfaces, the design with roll cap simplifies the exchange since only the cap has to be exchanged, which has a significantly lower weight than the entire roll arrangement including the shaft.
- the inventive design with separately replaceable roller cap also has the advantage that the heat transfer is reduced by the separation point or separation surface between the roller cap and roller body, so that it can be prevented that high temperatures migrate into the bearings of the roller assembly.
- the invention proposes, in a preferred embodiment, that the basic roller body is formed integrally with the shaft, wherein the roller body is then formed by a conical shaft end becomes. On this one-piece arrangement of shaft and roller body then the roller cap can be placed as a replacement part.
- the roller cap is clamped with at least one tie rod against the roller body, z. B. hydraulically braced, preferably with at least one hydraulic nut.
- This high clamping forces can be realized, which are required due to the high forces and the high masses of the tools.
- the roller cap can be designed in the shape of a hollow cone or conical ring and can have a conical inner surface which rests against a conical outer surface of the roller base body or the shaft.
- the roller cap has an inner cylindrical threaded portion, preferably followed by the conical inner surface of the roller cap.
- this cylindrical Threaded section can screw a cylindrical tie rod, which then passes through the roller body and the shaft and the transmission side is braced.
- the roller cap on the one hand and the roller base body on the other hand are made of the same material.
- the invention makes it possible in a particularly advantageous embodiment that the roller cap is made of a different material than the roller body and the shaft. This is particularly useful for high temperature applications, because the roller cap then - as already explained - from temperature-resistant alloys, eg. As a high-alloy hot-work steel or a nickel-based alloy can be produced. The costs can thus be significantly reduced overall.
- the cap may be formed of a material with high thermal conductivity, in which case a heating to prevent heat loss is possible.
- the cap may be formed of a low thermal conductivity material or a heat insulating material to prevent heat loss.
- the invention also relates to a ring rolling mill with at least one roll of the type described.
- the invention relates in particular to a ring rolling mill with at least main roll, mandrel roll and upper axial roll and lower axial roll, preferably at least the upper axial roll and / or the lower axial roll in the manner according to the invention are configured with roller cap.
- a ring rolling mill is shown simplified in its basic structure.
- the ring rolling mill is used to produce seamless rings that are rolled out of a ring blank.
- the ring blank is in Fig. 1 only partially indicated.
- the ring rolling mill has in its basic structure a main roll 1, a mandrel roll 2, an upper tapered roll 3 and a lower tapered roll 4.
- the tapered rollers 3, 4 work on the ring end faces. Between these tapered rollers an axial rolling gap is formed.
- the tapered rollers 3, 4 are therefore also referred to as axial rollers 3, 4.
- the main roll 1 and the mandrel roll 2 thus form a pair of rolls, while the axial roll 3 and the axial roll 4 form a further pair of rolls, wherein at least one roll of these pairs of rolls is driven.
- the drives are merely indicated in the figures, they can be configured in a conventional manner.
- a drive 16 is shown, which operates via a gear 17 on the roller.
- At least one of the axial rolls 3, 4 has a roll main body 5 and a roll cap 6 which is placed on the roll main body 5.
- this is illustrated by the example of the lower axial roller 4.
- the upper axial roller 3 can be designed identically and consequently also be equipped with roller cap 6 (and possibly also with drive).
- the roller cap 6 is detachably and interchangeably placed on the roller body 5, namely pushed or plugged.
- the roller cap 6 is clamped with a clamping means 10 against the base body 5, namely with a pull rod 10, which is clamped hydraulically in the embodiment with a hydraulic nut 15 against the roller body.
- the roller base body 5 is formed integrally with the shaft 7 of the roller and that on this one-piece unit of roller base body 5 and shaft 7, the separately prepared roller cap 6 is placed.
- the roller cap 6 has not only a conical outer surface 8 as a working surface, but also a conical inner surface 9, d. h.,
- the roller cap 6 is formed as a conical-ring-shaped cap with a predetermined wall thickness.
- the roller base body 5 has a conical outer surface 12, d. h.,
- the roller base body 5 is formed by the conical end of the shaft 7, so that the roller cap 6 is put in other words on the conical end 5 of the shaft 7.
- the invention thus provides a separately replaceable wearing part as a roller cap 6 available.
- Roller body 5 and shaft 7 are provided with a central opening 13 through which the pull rod 10 is passed.
- the roller cap 6 has on the inside a cylindrical threaded portion 11.
- the tie rod 10 which is provided at the end with an external thread, screwed.
- a hydraulic nut 15 is indicated, with which the roller cap is clamped by means of the tie rod 10 against the roller body 5.
- the inventive design with separately replaceable roller cap 6 makes it possible in particular to manufacture the roller cap 6 made of a different material than the roller body 5 and the shaft 7. This is particularly advantageous because the overall arrangement of the roller 3, 4 a high weight of z , B. has more than 10 tons. In the course of the usual wear, it is then not necessary to replace the entire roller 3, 4, but it must be done only the replacement of the roller cap 6. The handling is simplified, so that the exchange can be realized easier and faster. The operating costs can be reduced overall, since the wear part, namely the cap, can be produced much cheaper. This in turn makes it possible to produce a roller cap in high quality, since the additional cost of high quality material must be applied only to the roller cap and not for the entire roller assembly. This in turn makes it possible to use a total of a roll with a roll cap with excellent material properties, so that in particular a hot working at high temperatures can be realized economically.
- the roller cap has z. B. a wall thickness of more than 50 mm, preferably more than 100 mm.
- the end-side opening of the cap, in which the conical end of the shaft or the roller base body is immersed, has a diameter of more than 200 mm, preferably more than 400 mm.
- the pull rod may have a diameter of more than 100 mm, preferably more than 150 mm. It becomes clear that the rollers or roller caps are bulky, heavy components.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
Die Erfindung betrifft eine Walze für ein Ringwalzwerk. Eine Axialwalze gemäß dem Oberbegriff des Anspruchs 1 ist z.B. aus der
- Bei einem Ringwalzwerk handelt es sich um ein Walzwerk, mit dem Ringrohlinge durch radiales Aufweiten zu Ringen mit gewünschtem Querschnitt ausgewalzt werden. Die Ringrohlinge erhält man z. B. durch Stauchen, Lochen und/oder Schmieden. Ein solches Ringwalzwerk weist in der Regel zumindest eine auf die Ringaußenseite wirkende, angetriebene Hauptwalze bzw. Tellerwalze und eine auf die Ringinnenseite wirkende Dornwalze bzw. einen Walzendorn auf. Auf die Ringstirnflächen wirken in der Regel zwei Axialwalzen, die z. B. als obere Axialwalze und untere Axialwalze bezeichnet werden. Diese Axialwalzen sind in der Regel kegelförmig ausgebildet, sie werden auch als Kegelwalzen bezeichnet. Aufbau und Funktionsweise derartiger Ringwalzwerke sind seit langem bekannt. Dieses gilt auch für die üblichen Antriebe.- A ring rolling mill is a rolling mill, with which ring blanks are rolled by radial expansion into rings of the desired cross-section. The ring blanks are obtained z. B. by upsetting, punching and / or forging. Such a ring rolling mill generally has at least one driven main roller or plate roller acting on the ring outer side and a mandrel roller or a roller mandrel acting on the ring inner side. On the ring end faces usually act two axial rolls z. B. be referred to as upper axial roller and lower axial roller. These axial rollers are generally conical in shape, they are also referred to as tapered rollers. Structure and operation of such ring rolling mills have long been known. This also applies to the usual drives.
Ringwalzwerke der eingangs beschriebenen Art sind z. B. aus der
Mit einem solchen Ringwalzwerk wird in der Praxis nicht nur Normalstahl verarbeitet, sondern es wird zunehmend auch im Hochtemperaturbereich gearbeitet. Dieses gilt beispielsweise, wenn Rohlinge aus Titanlegierungen oder Nickelbasislegierungen umgeformt werden. Die Temperatur der Walzenoberflächen beträgt bei solchen Verfahren zum Teil mehr als 500 °C. Es versteht sich, dass die Walzen werkstofftechnisch dafür ausgelegt sein müssen. Unter Berücksichtigung der Tatsache, dass es sich um groß bauende, schwere Komponenten und Werkzeuge handelt, ist dieses mit hohen Kosten verbunden. Dieses ist insbesondere deshalb nachteilig, weil die Walzen regelmäßig einem Verschleiß unterliegen und folglich ausgetauscht werden müssen. - Hier setzt die Erfindung ein.With such a ring rolling mill not only normal steel is processed in practice, but it is increasingly being worked in the high temperature range. This applies, for example, when blanks of titanium alloys or nickel-based alloys are formed. The temperature of the roll surfaces is in some cases more than 500 ° C in such processes. It is understood that the rollers material must be designed for this. Considering the fact that they are large-sized, heavy components and tools, this is associated with high costs. This is particularly disadvantageous because the rollers regularly a Wear subject and therefore need to be replaced. - This is where the invention starts.
Im Übrigen kennt man aus der
Der Erfindung liegt die Aufgabe zugrunde, eine Walze für ein Ringwalzwerk zu schaffen, welche sich wirtschaftlich und variabel herstellen und einsetzen lässt. Insbesondere soll eine wirtschaftliche Bearbeitung im Hochtemperaturbereich möglich sein.The invention has for its object to provide a roller for a ring mill, which can be economically and variably produced and used. In particular, an economical processing in the high temperature range should be possible.
Zur Lösung dieser Aufgabe lehrt die Erfindung bei einer gattungsgemäßen Walze für ein Ringwalzwerk, dass die Walzen einen Walzengrundkörper und eine auf den Walzengrundkörper aufgesetzte Walzenkappe aufweisen. Diese Walzenkappe ist lösbar und austauschbar auf den Walzengrundkörper aufgesetzt, z. B. aufgesteckt oder aufgeschoben. Die Erfindung betrifft eine Axialwalze und folglich Kegelwalze eines solchen Ringwalzwerkes. In diesem Fall weist die Walzenkappe eine kegelförmige Außenfläche auf, welche die Arbeitsfläche bildet. Außerdem weist die Walzenkappe eine Innenfläche auf, welche gegen die Außenfläche des Walzengrundkörpers anliegt. Auch diese Innenfläche ist vorzugsweise kegelförmig ausgebildet, so dass die Walzenkappe in besonders bevorzugter Ausführungsform hohlkegelförmig bzw. kegelringförmig mit vorgegebener Wandstärke ausgebildet ist.To solve this problem, the invention teaches in a generic roller for a ring rolling mill, that the rollers have a roller body and a patch on the roller body roller cap. This roller cap is detachably and interchangeably mounted on the roller body, z. B. plugged or postponed. The invention relates to an axial roller and consequently tapered roller of such a ring rolling mill. In this case, the roller cap has a conical outer surface, which forms the working surface. In addition, the roller cap has an inner surface which rests against the outer surface of the roller body. Also, this inner surface is preferably formed conical, so that the roller cap is formed in a particularly preferred embodiment, a hollow cone-shaped or cone-shaped with predetermined wall thickness.
Die Erfindung geht dabei von der Erkenntnis aus, dass durch Realisierung der Walzenkappe ein separat austauschbares Bauteil zur Verfügung gestellt wird, welches optimal an die gegebenen Anforderungen angepasst werden kann. So besteht insbesondere für die Warmumformung bei hohen Temperaturen die Möglichkeit, die Walzenkappe aus einem höher legierten Warmarbeitsstahl oder einer Nickelbasislegierung herzustellen, ohne dass es erforderlich ist, den Walzengrundkörper und insbesondere auch die Welle aus einem solchen Material herzustellen. Unter Berücksichtigung der Tatsache, dass höher legierte Warmarbeitsstähle und insbesondere Nickelbasislegierungen deutlich teurer als "einfache" Arbeitsstähle bzw. Warmarbeitsstähle sind, lassen sich die Walzen insgesamt deutlich günstiger herstellen. Dabei muss berücksichtigt werden, dass herkömmliche Walzen, z. B. Kegelwalzen insgesamt ein Gewicht von mehreren Tonnen, z. B. mehr als 10 Tonnen aufweisen. Die erfindungsgemäß vorgeschlagene Walzenkappe weist ein deutlich geringeres Gewicht auf, so dass sie auch deutlich kostengünstiger produziert werden kann. Dieses ist insbesondere deshalb interessant, weil es sich bei der Walze um ein Verschleißteil handelt. Erfindungsgemäß ist nun nicht mehr der Austausch der gesamten Walze (einschließlich der daran üblicherweise einstückig angeformten Welle) erforderlich, sondern es muss lediglich die Walzenkappe ausgetauscht werden. Dieses ist nicht nur bei der Verwendung von höher legierten Warmarbeitsstählen und Nickelbasislegierungen, sondern auch bei anderen Werkstoffen vorteilhaft. Die Erfindung beschränkt sich daher nicht nur auf Ringwalzwerke für Hochtemperaturanwendungen, sondern sie umfasst auch Ringwalzwerke für das Walzen von Normalstahl. Denn auch wenn sich dabei nicht das Problem der hohen Temperaturen der Walzenoberflächen stellt, so vereinfacht die Ausgestaltung mit Walzenkappe doch den Austausch, da lediglich die Kappe auszutauschen ist, die ein deutlich geringeres Gewicht aufweist, als die gesamte Walzenanordnung einschließlich Welle.The invention is based on the recognition that a separately exchangeable component is made available by realization of the roller cap, which can be optimally adapted to the given requirements. Thus, in particular for hot forming at high temperatures, it is possible to produce the roll cap from a higher-alloyed hot-work steel or a nickel-based alloy, without it being necessary to produce the roll main body and in particular also the shaft from such a material. Taking into account the fact that higher-alloyed hot-work steels and in particular nickel-based alloys are significantly more expensive than "simple" work steels or hot-work steels, the rolls can be produced significantly more cheaply overall. It must be taken into account that conventional rollers, for. B. tapered rollers total weight of several tons, z. B. more than 10 tons. The inventively proposed roller cap has a significantly lower weight, so that it can also be produced significantly cheaper. This is particularly interesting because it is a wear part in the roller. According to the invention, it is no longer necessary to replace the entire roll (including the shaft, which is usually integrally formed thereon), but instead only replace the roll cap. This is advantageous not only in the use of higher alloyed hot work steels and nickel base alloys, but also in other materials. The invention is therefore not limited to ring rolling mills for high temperature applications, but also includes ring rolling mills for rolling mild steel. Even though this does not pose the problem of the high temperatures of the roll surfaces, the design with roll cap simplifies the exchange since only the cap has to be exchanged, which has a significantly lower weight than the entire roll arrangement including the shaft.
Bei Hochtemperaturanwendungen hat die erfindungsgemäße Ausgestaltung mit separat austauschbarer Walzenkappe darüber hinaus den Vorteil, dass durch die Trennstelle bzw. Trennfläche zwischen Walzenkappe und Walzengrundkörper der Wärmeübergang verringert wird, so dass verhindert werden kann, dass hohe Temperaturen in die Lager der Walzenanordnung wandern.In high-temperature applications, the inventive design with separately replaceable roller cap also has the advantage that the heat transfer is reduced by the separation point or separation surface between the roller cap and roller body, so that it can be prevented that high temperatures migrate into the bearings of the roller assembly.
Unter Berücksichtigung der Tatsache, dass es bislang in der Praxis üblich war, die Walze mit der Welle einstückig zu fertigen, schlägt die Erfindung in bevorzugter Weiterbildung vor, dass der Walzengrundkörper einstückig mit der Welle ausgebildet ist, wobei der Walzengrundkörper dann von einem kegelförmigen Wellenende gebildet wird. Auf diese einstückige Anordnung aus Welle und Walzengrundkörper lässt sich dann die Walzenkappe als Austauschteil aufsetzen.Taking into account the fact that it has hitherto been customary in practice to manufacture the roller in one piece with the shaft, the invention proposes, in a preferred embodiment, that the basic roller body is formed integrally with the shaft, wherein the roller body is then formed by a conical shaft end becomes. On this one-piece arrangement of shaft and roller body then the roller cap can be placed as a replacement part.
Erfindungsgemäß ist die Walzenkappe mit zumindest einer Zugstange gegen den Walzengrundkörper verspannt , z. B. hydraulisch verspannt, bevorzugt mit zumindest einer Hydraulikmutter. Damit lassen sich hohe Spannkräfte realisieren, die aufgrund der hohen auftretenden Kräfte und der hohen Massen der Werkzeuge erforderlich sind.According to the invention, the roller cap is clamped with at least one tie rod against the roller body, z. B. hydraulically braced, preferably with at least one hydraulic nut. This high clamping forces can be realized, which are required due to the high forces and the high masses of the tools.
Wie bereits erläutert kann die Walzenkappe hohlkegelförmig bzw. kegelringförmig ausgebildet sein und eine kegelförmige Innenfläche aufweisen, welche gegen eine kegelförmige Außenfläche des Walzengrundkörpers bzw. der Welle anliegt. Um die Walzenkappe mit dem Grundkörper verspannen zu können, schlägt die Erfindung vor, dass die Walzenkappe einen inneren zylindrischen Gewindeabschnitt aufweist, an den sich vorzugsweise die kegelförmige Innenfläche der Walzenkappe anschließt. In diesen zylindrischen Gewindeabschnitt lässt sich eine zylindrische Zugstange einschrauben, welche dann den Walzengrundkörper und die Welle durchgreift und getriebeseitig verspannt wird.As already explained, the roller cap can be designed in the shape of a hollow cone or conical ring and can have a conical inner surface which rests against a conical outer surface of the roller base body or the shaft. In order to clamp the roller cap with the base body, the invention proposes that the roller cap has an inner cylindrical threaded portion, preferably followed by the conical inner surface of the roller cap. In this cylindrical Threaded section can screw a cylindrical tie rod, which then passes through the roller body and the shaft and the transmission side is braced.
Es liegt im Rahmen der Erfindung, dass die Walzenkappe einerseits und der Walzengrundkörper andererseits aus demselben Material gefertigt sind. Die Erfindung ermöglicht jedoch in besonders vorteilhafter Ausgestaltung, dass die Walzenkappe aus einem anderen Material gefertigt ist als der Walzengrundkörper und die Welle. Dieses ist insbesondere für Hochtemperaturanwendungen zweckmäßig, weil die Walzenkappe dann - wie bereits erläutert - aus temperaturfesten Legierungen, z. B. einem hochlegierten Warmarbeitsstahl oder einer Nickelbasislegierung hergestellt werden kann. Die Kosten lassen sich damit insgesamt erheblich reduzieren.It is within the scope of the invention that the roller cap on the one hand and the roller base body on the other hand are made of the same material. However, the invention makes it possible in a particularly advantageous embodiment that the roller cap is made of a different material than the roller body and the shaft. This is particularly useful for high temperature applications, because the roller cap then - as already explained - from temperature-resistant alloys, eg. As a high-alloy hot-work steel or a nickel-based alloy can be produced. The costs can thus be significantly reduced overall.
Die Kappe kann aus einem Material mit hoher Wärmeleitfähigkeit ausgebildet sein, wobei dann eine Aufheizung zur Vermeidung von Wärmeverlusten möglich ist. Alternativ kann die Kappe aus einem Material mit niedriger Wärmeleitfähigkeit bzw. einem wärmeisolierenden Material ausgebildet sein, um Wärmeverluste zu vermeiden.The cap may be formed of a material with high thermal conductivity, in which case a heating to prevent heat loss is possible. Alternatively, the cap may be formed of a low thermal conductivity material or a heat insulating material to prevent heat loss.
Gegenstand der Erfindung ist auch ein Ringwalzwerk mit zumindest einer Walze der beschriebenen Art. So betrifft die Erfindung insbesondere ein Ringwalzwerk mit zumindest Hauptwalze, Dornwalze und oberer Axialwalze sowie unterer Axialwalze, wobei vorzugsweise zumindest die obere Axialwalze und/oder die untere Axialwalze in der erfindungsgemäßen Art mit Walzenkappe ausgestaltet sind.The invention also relates to a ring rolling mill with at least one roll of the type described. The invention relates in particular to a ring rolling mill with at least main roll, mandrel roll and upper axial roll and lower axial roll, preferably at least the upper axial roll and / or the lower axial roll in the manner according to the invention are configured with roller cap.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen
- Fig. 1
- schematisch einen Schnitt durch ein Ringwalzwerk mit erfindungsgemäßen Axialwalzen und
- Fig. 2
- eine vereinfachte perspektivische Ansicht auf eine Axialwalze.
- Fig. 1
- schematically a section through a ring rolling mill with axial rollers according to the invention and
- Fig. 2
- a simplified perspective view of an axial roller.
In
Das Ringwalzwerk weist in seinem grundsätzlichen Aufbau eine Hauptwalze 1, eine Dornwalze 2, eine obere Kegelwalze 3 und eine untere Kegelwalze 4 auf. Die Hauptwalze 1, die auch als Tellerwalze bezeichnet wird, arbeitet auf die Ringaußenseite, während die Dornwalze 2, die auch als Walzendorn bezeichnet wird, auf die Ringinnenseite arbeitet. Die Kegelwalzen 3, 4 arbeiten auf die Ringstirnflächen. Zwischen diesen Kegelwalzen wird ein Axialwalzspalt gebildet. Die Kegelwalzen 3, 4 werden daher auch als Axialwalzen 3, 4 bezeichnet. Die Hauptwalze 1 und die Dornwalze 2 bilden folglich ein Walzenpaar, während die Axialwalze 3 und die Axialwalze 4 ein weiteres Walzenpaar bilden, wobei zumindest jeweils eine Walze dieser Walzenpaare angetrieben ist. Dies ist grundsätzlich bekannt. Die Antriebe sind in den Figuren lediglich angedeutet, sie können in herkömmlicher Weise ausgestaltet sein. Für die Walze 4 ist ein Antrieb 16 dargestellt, welcher über ein Getriebe 17 auf die Walze arbeitet.The ring rolling mill has in its basic structure a main roll 1, a
Erfindungsgemäß weist zumindest eine der Axialwalzen 3, 4 einen Walzengrundkörper 5 und eine auf den Walzengrundkörper 5 aufgesetzte Walzenkappe 6 auf. In der
Die Walzenkappe 6 weist nicht nur eine kegelförmige Außenfläche 8 als Arbeitsfläche, sondern auch eine kegelförmige Innenfläche 9 auf, d. h., die Walzenkappe 6 ist als kegelringförmige Kappe mit vorgegebener Wandstärke ausgebildet. Im Ausführungsbeispiel weist der Walzengrundkörper 5 eine kegelförmige Außenfläche 12 auf, d. h., der Walzengrundkörper 5 wird von dem kegelförmigen Ende der Welle 7 gebildet, so dass die Walzenkappe 6 mit anderen Worten auf das kegelförmige Ende 5 der Welle 7 aufgesetzt ist. Die Erfindung stellt folglich ein separat austauschbares Verschleißteil als Walzenkappe 6 zur Verfügung.The roller cap 6 has not only a conical outer surface 8 as a working surface, but also a conical
Walzengrundkörper 5 bzw. Welle 7 sind mit einer zentralen Durchbrechung 13 versehen, durch welche die Zugstange 10 hindurchgeführt ist. Die Walzenkappe 6 weist innenseitig einen zylindrischen Gewindeabschnitt 11 auf.
In diesen zylindrischen Gewindeabschnitt 11 ist die Zugstange 10, welche endseitig mit einem Außengewinde versehen ist, einschraubbar. An dem der Walzenkappe 6 gegenüberliegenden Ende der Zugstange 10 ist eine Hydraulikmutter 15 angedeutet, mit welcher die Walzenkappe mit Hilfe der Zugstange 10 gegen den Walzengrundkörper 5 verspannt wird.In this cylindrical threaded
Die erfindungsgemäße Ausgestaltung mit separat austauschbarer Walzenkappe 6 ermöglicht es insbesondere, die Walzenkappe 6 aus einem anderen Material zu fertigen, als den Walzengrundkörper 5 und die Welle 7. Dieses ist insbesondere deshalb vorteilhaft, weil die Gesamtanordnung der Walze 3, 4 ein hohes Gewicht von z. B. mehr als 10 Tonnen aufweist. Im Zuge des üblichen Verschleißes ist es dann nicht erforderlich, die gesamte Walze 3, 4 auszutauschen, sondern es muss lediglich der Austausch der Walzenkappe 6 erfolgen. Die Handhabung wird vereinfacht, so dass der Austausch einfacher und schneller realisiert werden kann. Die Betriebskosten lassen sich insgesamt verringern, da sich das Verschleißteil, nämlich die Kappe, deutlich günstiger herstellen lässt. Dieses ermöglicht es im Gegenzug, eine Walzenkappe in hoher Qualität herzustellen, da die Mehrkosten für hochwertiges Material nur für die Walzenkappe und nicht für die gesamte Walzenanordnung aufgebracht werden müssen. Dieses ermöglicht es wiederum, insgesamt eine Walze mit einer Walzenkappe mit hervorragenden Werkstoffeigenschaften zu verwenden, so dass sich insbesondere eine Warmumformung bei hohen Temperaturen wirtschaftlich realisieren lässt.The inventive design with separately replaceable roller cap 6 makes it possible in particular to manufacture the roller cap 6 made of a different material than the
Die Walzenkappe weist z. B. eine Wandstärke von mehr als 50 mm, vorzugsweise mehr als 100 mm auf. Die endseitige Öffnung der Kappe, in welche das kegelförmige Ende der Welle bzw. der Walzengrundkörper eintaucht, weist einen Durchmesser von mehr als 200 mm, vorzugsweise mehr als 400 mm auf. Die Zugstange kann einen Durchmesser von mehr als 100 mm, vorzugsweise mehr als 150 mm aufweisen. Es wird deutlich, dass es sich bei den Walzen bzw. Walzenkappen um groß bauende, schwere Bauteile handelt.The roller cap has z. B. a wall thickness of more than 50 mm, preferably more than 100 mm. The end-side opening of the cap, in which the conical end of the shaft or the roller base body is immersed, has a diameter of more than 200 mm, preferably more than 400 mm. The pull rod may have a diameter of more than 100 mm, preferably more than 150 mm. It becomes clear that the rollers or roller caps are bulky, heavy components.
Claims (12)
- A roll in the form of embodiment as an axial roll for a ring rolling mill, wherein the roll (3, 4) has a roll base body (5) and a roll cap (6) fitted onto the roll base body (5), characterised in that, the roll cap (6) is clamped against the roll base body (5) by at least one tie rod (10).
- The roll in accordance with claim 1, characterised in that, the roll cap (6) is fitted onto the roll base body (5) such that it can be detached and replaced.
- The roll in accordance with claim 1 or 2, characterised in that, the roll cap (6) is clamped by hydraulic means against the roll base body (5) with the tie rod (10), preferably with a hydraulic nut.
- The roll in accordance with one of the claims 1 to 3, characterised in that, the roll base body of the cone-shaped axial roll has a cone-shaped outer surface (12), and in that the roll cap (6) has a cone-shaped outer surface (8) together with a cone-shaped inner surface (9) and accordingly is configured as an annular cone-shaped, or hollow cone-shaped, cap with a prescribed wall thickness.
- The roll in accordance with one of the claims 1 to 4, characterised in that, the roll cap (6) has a cylindrical thread section (11) onto which the cone-shaped inner surface (9) preferably connects.
- The roll in accordance with one of the claims 1 to 5, characterised in that, the roll base body (5) is configured integrally with the shaft (7) for the roll arrangement, wherein the roll base body (5) is formed by a cone-shaped end of the shaft (7).
- The roll in accordance with one of the claims 1 to 6, characterised in that, the roll cap (6) is manufactured from a material other than that of the roll base body (5), and/or the shaft (7).
- The roll in accordance with one of the claims 1 to 7, characterised in that, the roll cap (6) is manufactured from a high-alloy hot-working steel, or from a nickel-based alloy.
- The roll in accordance with one of the claims 1 to 8, characterised in that, as a driven roll the roll is provided or connected with a drive (16).
- A ring rolling mill with at least one roll in accordance with one of the claims 1 to 9.
- The ring rolling mill in accordance with claim 10, with a main roll (1), an arbor roll (2), an upper axial roll (3), and a lower axial roll (4), characterised in that, one or both axial rolls (3, 4) are equipped with a roll cap (6) fitted onto a roll base body (5).
- The ring rolling mill in accordance with claim 11, characterised in that, the axial roll (3, 4), equipped with the roll cap (6), is equipped with a drive (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110108113 DE102011108113A1 (en) | 2011-07-21 | 2011-07-21 | Roller for a ring rolling mill |
PCT/EP2012/063845 WO2013010961A1 (en) | 2011-07-21 | 2012-07-13 | Roll for a ring rolling mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2734318A1 EP2734318A1 (en) | 2014-05-28 |
EP2734318B1 true EP2734318B1 (en) | 2017-01-04 |
Family
ID=46516750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12735873.7A Active EP2734318B1 (en) | 2011-07-21 | 2012-07-13 | Roll for a ring rolling mill |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2734318B1 (en) |
DE (1) | DE102011108113A1 (en) |
WO (1) | WO2013010961A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014005085A1 (en) | 2014-04-08 | 2015-10-08 | Sms Meer Gmbh | Multi-roll table-type rolling mill and method of rolling rings in a multi-roll table-type rolling mill |
PL239801B1 (en) | 2020-03-25 | 2022-01-10 | Zarmen Fpa Spolka Z Ograniczona Odpowiedzialnoscia | Method of shaping seamless rings in the rolling process and a unit for shaping seamless rings in the rolling process |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1781140A (en) | 1923-12-10 | 1930-11-11 | Taylor James Hall | Universal ring-rolling machine |
DE2009867A1 (en) | 1970-03-03 | 1971-09-30 | Siemag Gmbh | Rolling head with overhung rolls inclined towards the rolling stock axis |
US3824820A (en) | 1972-05-09 | 1974-07-23 | Rheinstahl Ag | Ring rolling mill |
JPS5421635A (en) | 1977-07-19 | 1979-02-19 | Mitsubishi Electric Corp | Induction heated cooking appliance |
DE3229201A1 (en) | 1982-08-05 | 1984-02-09 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Tapered roll of a planetary skew-rolling mill |
EP0100957A1 (en) | 1982-08-05 | 1984-02-22 | Sms Schloemann-Siemag Aktiengesellschaft | Roll head of a planetary cross-rolling mill |
DE3043937C2 (en) | 1980-11-21 | 1988-08-25 | Sms Schloemann-Siemag Ag, 4000 Duesseldorf, De | |
DE3840020A1 (en) | 1988-11-26 | 1990-05-31 | Thyssen Industrie | Radial die rolling machine |
DE3902784A1 (en) | 1989-01-31 | 1990-08-02 | Esw Roehrenwerke Gmbh | Work roll for a planetary cross-rolling mill |
DE202010014708U1 (en) | 2010-10-25 | 2011-01-20 | C. Groene Consulting, Unip Lda | Axial / radial ring rolling mill |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE54323C (en) | J. munton in Maywood, County of Cook, Staat Illinois, V. St. A | Wheel tire rolling mill | ||
DE1019635B (en) | 1956-08-08 | 1957-11-21 | Wagner & Co Werkzeugmaschinenf | Ring rolling mill |
DE1188544B (en) | 1961-12-22 | 1965-03-11 | Wagner & Co Werkzeugmaschinenf | Four-roll ring rolling mill with automatically adjustable axial rolls |
JPS5641862Y2 (en) * | 1977-07-13 | 1981-09-30 |
-
2011
- 2011-07-21 DE DE201110108113 patent/DE102011108113A1/en not_active Withdrawn
-
2012
- 2012-07-13 EP EP12735873.7A patent/EP2734318B1/en active Active
- 2012-07-13 WO PCT/EP2012/063845 patent/WO2013010961A1/en active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1781140A (en) | 1923-12-10 | 1930-11-11 | Taylor James Hall | Universal ring-rolling machine |
DE2009867A1 (en) | 1970-03-03 | 1971-09-30 | Siemag Gmbh | Rolling head with overhung rolls inclined towards the rolling stock axis |
US3824820A (en) | 1972-05-09 | 1974-07-23 | Rheinstahl Ag | Ring rolling mill |
JPS5421635A (en) | 1977-07-19 | 1979-02-19 | Mitsubishi Electric Corp | Induction heated cooking appliance |
DE3043937C2 (en) | 1980-11-21 | 1988-08-25 | Sms Schloemann-Siemag Ag, 4000 Duesseldorf, De | |
DE3229201A1 (en) | 1982-08-05 | 1984-02-09 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Tapered roll of a planetary skew-rolling mill |
EP0100957A1 (en) | 1982-08-05 | 1984-02-22 | Sms Schloemann-Siemag Aktiengesellschaft | Roll head of a planetary cross-rolling mill |
DE3840020A1 (en) | 1988-11-26 | 1990-05-31 | Thyssen Industrie | Radial die rolling machine |
DE3902784A1 (en) | 1989-01-31 | 1990-08-02 | Esw Roehrenwerke Gmbh | Work roll for a planetary cross-rolling mill |
DE202010014708U1 (en) | 2010-10-25 | 2011-01-20 | C. Groene Consulting, Unip Lda | Axial / radial ring rolling mill |
Non-Patent Citations (2)
Title |
---|
"Untersuchung des flexiblen axialen Profilierens von nahtlosen Ringen auf Radial-Axial-Ringwalzwerken in Stahl", 00072009, ISBN: 978-3-8322-8588-3, article DENNIS MICHL: "3.2 ubertragen des werkzeugkonzeptes auf das industriewalzwerk", pages: 28 - 29, XP055422344 |
U. KOPPERS ET AL.: "Neue Entwicklungen beim Walzen axial profilierter Ringe aus Stahl und NE-Metallen", AACHENER STAHLKOLLOQUIUM - UMFORMUNGSTECHNIK, 2007, XP055422357 |
Also Published As
Publication number | Publication date |
---|---|
WO2013010961A1 (en) | 2013-01-24 |
DE102011108113A1 (en) | 2013-01-24 |
EP2734318A1 (en) | 2014-05-28 |
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