EP1425426B1 - Device for quenching and tempering long-length rolling stock - Google Patents
Device for quenching and tempering long-length rolling stock Download PDFInfo
- Publication number
- EP1425426B1 EP1425426B1 EP02797886A EP02797886A EP1425426B1 EP 1425426 B1 EP1425426 B1 EP 1425426B1 EP 02797886 A EP02797886 A EP 02797886A EP 02797886 A EP02797886 A EP 02797886A EP 1425426 B1 EP1425426 B1 EP 1425426B1
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- EP
- European Patent Office
- Prior art keywords
- rolled material
- cooling
- rail
- hardening
- roller conveyor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/004—Transverse moving
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/023—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes by immersion in a bath
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/085—Rail sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
- B21B43/003—Transfer to bed
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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
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
- C21D9/06—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails with diminished tendency to become wavy
Definitions
- the invention relates to a device for hardening of rolling stock with a large longitudinal extent at high throughput. More specifically, the invention relates to a device for thermal annealing of at least parts of the cross-section over the longitudinal extent of profiled rolling produced in sequence from the rolling heat, in particular for hardening at least the head of rails with a length greater than 50 m and subsequent cooling to room temperature, consisting essentially of a roller table, a means for achsfrowenden alignment of the rolling stock, a means of transport with a support for the rolling stock for transverse displacement thereof, a hardening device with a manipulation arrangement and a cooling bed.
- a rolling stock is usually subjected to a thermal tempering treatment, which takes place in an advantageous manner using the rolling heat.
- This compensation which essentially causes an increase in the mechanical material properties, such as hardness, abrasion resistance and the like, can be carried out over the entire cross section or, as is usual in the case of a running rail, only over partial areas thereof.
- the rolling stock or partial regions of the cross section thereof located in the austenitic microstructure state is immersed over the entire length in a cooling medium and in this way achieves structural transformation in the desired manner.
- EP-0441766 B1 Devices for carrying out such compensation methods are known ( EP-0441766 B1 ) and have proven themselves in terms of improving the performance characteristics of railroad tracks quite well.
- the thermal quenching requires a corresponding immersion time or residence time in the cooling fluid, so that the throughput is limited by the tempering device.
- the maximum possible throughput through a dip-annealer with a Cooling tank limits the performance of the upstream rolling device.
- Modern rolling mills with upstream heating furnaces in particular for continuous cast starting material, usually have possible rolling capacities which are greater than the throughput of known dip-annealing plants, so that the rolling power must be reduced in a sequential production of hardened rails.
- the invention now aims to avoid the shortcomings and in particular the economic disadvantages of known thermal treatment facilities for rolling stock of the type mentioned and to provide a device which ensures high quality and good performance of the enforced rolling stock and has a high performance and it makes it possible to treat rod-shaped rod material, in particular rails of lengths over 50 m, from high-performance rolling mills using the rolling heat and to heat-treat the same.
- the roller table comprises a device for positioning the in at least one cross-sectional area conveyed zuge felicitten rolling in the longitudinal direction and an associated alignment that the curing device arranged at least two side by side with in the longitudinal direction substantially parallel to the alignment
- Liquid cooling means is formed with manipulators for movement of the rolling stock, that in addition to and parallel to the longitudinal extent of the liquid cooling devices, the laying area of the cooling bed is and that the transverse transport means at least two simultaneously between the roller table rollers movable support arms, each having at its ends disposed there Walzgutauflagen, these conditions on the support arms in the transverse direction of the directional position in the region of the roller table in the laying area of the cooling bed movable, lowered and can be raised so that only the supports the conveying plane of the roller table or Overhang the upper edge of the roller table.
- the advantages achieved by the invention are, in particular, that in a simple manner with the device in sequence in the transverse transport region of the roller table rolling stock can be positioned and axially aligned with high accuracy, wherein by means of Walzgutauflagen the transverse transport simultaneously, so without Beeint foundedung the setting and the axial straightening process , a previously directed and provided Walzgut can be placed in the storage areas of the cooling devices or from these in the support area of the cooling bed or roller table directly on the cooling bed. It is important that only the Walzgutauflagen the movable between the roles Tragarame of the transverse conveyor over the upper level of the roller table rollers or their promotion level can be raised.
- the device it is possible to arrange at least two curing devices on one side of the roller table, so that only one side a cooling bed is provided, which provides economic advantages.
- a rolling stock positioned on the roller table and directed in alignment with the axis can be lifted from it by means of the supports of the support arms and stored, for example, in a storage area of a liquid cooling device designed as a manipulator. Thereafter, the transverse transport means is released for further Walzgutquertransporte, the manipulator alone and automatically set up the stored rolling stock in its cross-sectional position, at least partially bring in the cooling medium, dig out and can provide for transport to the cooling bed.
- This invention essential separation of transverse transport of the rolling stock even over occupied cooling devices with ultimately a shelf on the cooling bed and an accurate insertion of the rolling stock in the cooling medium improves the accuracy of manipulation and the cooling treatment and leads reliably to hardened rolled products with constant high quality.
- the performance or the throughput of the device when using two hardening devices next to each other is approximately doubled.
- the dwell time can be favorably achieved shortened the rail on the roller table, the temperature control improved and, where appropriate, the system performance can be increased. Weiers, this situation is particularly well suited for a so-called "head down" vertical position of the rail by means of manipulators.
- the bottom side and optionally have sideways effective, horizontally and vertically aligned stops for leveling and alignment of the rolling, especially when cooling of parts of the cross section of a rail a over the length of highly constant cooling and hardness distribution can be achieved, which promotes a quality assurance of the product.
- FIG. 1 shows a device according to the invention with a hardening device 3 consisting of two liquid cooling devices 31 and 32, which are arranged between a roller table 1 and a cooling bed 4.
- a hardening device 3 consisting of two liquid cooling devices 31 and 32, which are arranged between a roller table 1 and a cooling bed 4.
- the head of the rail S is shown immersed in a cooling liquid 315.
- the rail can be positioned in a dip tank 312 such that exactly only one forced head cooling of the same takes place.
- stops 313 placed deeper below the surface of a cooling liquid 315, to cool the entire cross section of the rail in a forced manner.
- a second liquid cooling device 32 stands by.
- a rail S (not shown) coming from a roll train is positioned on the roller table 1 and can be aligned in alignment with the axis by an alignment means 2, optionally with an alignment ruler 21.
- a transverse transport means 5 with support arms 51 and in each case one Walzgutauflage 52 is disposed in the region of the roller table 1 traceable. However, it is also possible to determine such a transverse transport means 5 in the region of the cooling bed.
- a simultaneous displacement of the support arms 51 takes place in such a way that the rolling stock supports 52 arranged thereon raise the rail S from the roller table 1 in alignment while lifting it, and can transversely spend in the direction of the cooling bed 4. It is essential to the invention that in the course of a transverse transport only the Walzgutauflagen 52 of the transverse conveyor 5, even if the pads 52 are moved in the outermost region opposite, for example, when depositing a rail S, a storage area 41 of the cooling bed 4, a conveyor plane 11 of the roller table can project vertically.
- a positioned and axially aligned rail S which is advantageous in two cross-sectional areas on the conveying plane 11 of the roller table 1, can now in this position by means of Walzgutierlage 52 lifted vertically and substantially horizontally or transversely to a standby liquid cooling device, in Fig. 1 position 32, are spent.
- Such a cross-sectional position of the rail S on the Walzgutauflagen 52 is favorable for a takeover of the same and a "head down" vertical position by a manipulator 321, by means of which a lowering or insertion of the rail head can be done in a cooling liquid 325.
- a manipulator 321 by means of which a lowering or insertion of the rail head can be done in a cooling liquid 325.
- a lowering or insertion of the rail head can be done in a cooling liquid 325.
- the dwell time of the rail in the cooling liquid 325 it may be clamped by means of hold-down means 324 and leveling stops 323 for stabilization.
- the hardening device 3 can also be designed with more than two liquid cooling devices, at most a programmable control unit can advantageously be used for a production sequence.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Articles (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
- Laminated Bodies (AREA)
- Manufacturing And Processing Devices For Dough (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Attitude Control For Articles On Conveyors (AREA)
Abstract
Description
Die Erfindung betrifft eine Einrichtung zum Härten von Walzgut mit großer Längserstreckung bei hohem Durchsatz. Genauer definiert betrifft die Erfindung eine Vorrichtung zum thermischen Vergüten von zumindest Teilen des Querschnittes über die Längserstreckung von in Sequenz gefertigtem profilierten Walzgut aus der Walzhitze, insbesondere zum Härten zumindest des Kopfes von Schienen mit einer Länge von größer als 50 m und nachfolgender Abkühlung auf Raumtemperatur, bestehend im wesentlichen aus einem Rollgang, einem Mittel zur achsfluchtenden Ausrichtung des Walzgutes, einem Transportmittel mit einer Auflage für das Walzgut zur Querverbringung desselben, einer Härteeinrichtung mit einer Manipulationsanordnung und einem Kühlbett.The invention relates to a device for hardening of rolling stock with a large longitudinal extent at high throughput. More specifically, the invention relates to a device for thermal annealing of at least parts of the cross-section over the longitudinal extent of profiled rolling produced in sequence from the rolling heat, in particular for hardening at least the head of rails with a length greater than 50 m and subsequent cooling to room temperature, consisting essentially of a roller table, a means for achsfluchtenden alignment of the rolling stock, a means of transport with a support for the rolling stock for transverse displacement thereof, a hardening device with a manipulation arrangement and a cooling bed.
Zur Verbesserung der Materialeigenschaften wird ein Walzgut zumeist einer thermischen Vergütebehandlung, welche in vorteilhafter Weise unter Nutzung der Walzhitze erfolgt, unterworfen. Diese Vergütung, die im wesentlichen eine Erhöhung der mechanischen Werkstoffeigenschaften, wie Härte, Abriebfestigkeit und dgl. bewirkt, kann über den Gesamtquerschnitt oder wie bei einer Fahrschiene üblich, nur über Teilbereiche desselben durchgeführt werden. Dabei wird das im austeniitischen Gefügezustand befindliche Walzgut oder Teilbereiche des Querschnittes desselben über die gesamte Länge in ein Kühlmedium eingetaucht und derart eine Gefügeumwandlung in gewünschter Art erreicht.To improve the material properties, a rolling stock is usually subjected to a thermal tempering treatment, which takes place in an advantageous manner using the rolling heat. This compensation, which essentially causes an increase in the mechanical material properties, such as hardness, abrasion resistance and the like, can be carried out over the entire cross section or, as is usual in the case of a running rail, only over partial areas thereof. In this case, the rolling stock or partial regions of the cross section thereof located in the austenitic microstructure state is immersed over the entire length in a cooling medium and in this way achieves structural transformation in the desired manner.
Einrichtungen zur Durchführung von derartigen Vergütungsverfahren sind bekannt (
Je nach Walzendtemperatur sowie je nach spezifischer Masse bzw. Masse je Längeneinheit des Walzgutes erfordert dessen thermisches Vergüten eine entsprechende Tauchzeit oder Verweilzeit in der Kühlflüssigkeit, so daß der Durchsatz durch die Vergütevorrichtung begrenzt ist. Mit anderen Worten: Der maximal mögliche Durchsatz durch eine Tauch-Vergüteanlage mit einem Abkühlbecken limitiert die Leistung der vorgeordneten Walzeinrichtung.Depending on the roller end temperature and depending on the specific mass or mass per unit length of the rolling stock, its thermal quenching requires a corresponding immersion time or residence time in the cooling fluid, so that the throughput is limited by the tempering device. In other words: the maximum possible throughput through a dip-annealer with a Cooling tank limits the performance of the upstream rolling device.
Modere Profilwalzstraßen mit vorgeordneten Wärmeöfen insbesondere für Strangguß-Vormaterial verfügen zumeist über mögliche Walzleistungen, die größer sind als der Durchsatz von bekannten Tauch-Vergüteanlagen, so daß bei einer sequentiellen Herstellung von gehärteten Schienen die Walzleistung zurückgenommen werden muß.Modern rolling mills with upstream heating furnaces, in particular for continuous cast starting material, usually have possible rolling capacities which are greater than the throughput of known dip-annealing plants, so that the rolling power must be reduced in a sequential production of hardened rails.
Zur Vermeidung dieses insbesondere wirtschaftlichen Nachteiles wurde schon vorgeschlagen, das Walzgut im Durchlauf durch eine mit Sprühmittel versehene Kühlstrecke zu vergüten. Dieses Durchlaufverfahren erfordert jedoch große Baulängen der Einrichtung und erbringt zumeist nicht eine geforderte Materialqualität des Walzgutes.To avoid this particular economic disadvantage has been proposed to reward the rolling stock in passing through a cooling medium provided with spray. However, this continuous process requires large lengths of the device and usually does not provide a required material quality of the rolling stock.
Die Erfindung zielt nun darauf ab, die Mängel und insbesondere die wirtschaftlichen Nachteile von bekannten thermischen Behandlungseinrichtungen für Walzgut der eingangs genannten Art zu vermeiden und eine Vorrichtung zu schaffen, welche eine hohe Qualität und gute Gebrauchseigenschaften des durchgesetzten Walzgutes sicherstellt sowie eine große Leistung besitzt und es ermöglicht, in Sequenz gefertigtes Stabmaterial, insbesondere Schienen mit Längen über 50 m, aus Walzstraßen mit hoher Leistung unter Nutzung der Walzhitze zu behandeln und thermisch zu vergüten.The invention now aims to avoid the shortcomings and in particular the economic disadvantages of known thermal treatment facilities for rolling stock of the type mentioned and to provide a device which ensures high quality and good performance of the enforced rolling stock and has a high performance and it makes it possible to treat rod-shaped rod material, in particular rails of lengths over 50 m, from high-performance rolling mills using the rolling heat and to heat-treat the same.
Dieses Ziel wird bei einer gattungsgemäßen Vorrichtung dadurch erreicht, daß der Rollgang eine Einrichtung zur Positionierung des in mindestens einem Querschnittsbereich aufliegend zugeförderten Walzgutes in Längsrichtung und ein zugeordnetes Ausrichtmittel aufweist, daß die Härteeinrichtung aus mindestens zwei nebeneinander mit in deren Längsrichtung im wesentlichen parallel zum Ausrichtmittel angeordneten Flüssigkeitskühleinrichtungen mit Manipulatoren für eine Bewegung des Walzgutes gebildet ist, daß neben den und parallel zur Längserstreckung der Flüssigkühleinrichtungen sich der Auflegebereich vom Kühlbett befindet und daß das Quertransportmittel mindestens zwei simultan zwischen den Rollgangrollen bewegbare Tragarme mit jeweils endenseitig daran angeordneten Walzgutauflagen besitzt, diese Auflagen an den Tragarmen in Querrichtung von der Richtposition im Bereich des Rollganges bis in den Auflegebereich des Kühlbettes verfahrbar, absenkbar und derart anhebbar sind, daß ausschließlich die Auflagen die Förderebene des Rollganges bzw. die Rollgangsoberkante überragen.This object is achieved in a generic device characterized in that the roller table comprises a device for positioning the in at least one cross-sectional area conveyed zugeförderten rolling in the longitudinal direction and an associated alignment that the curing device arranged at least two side by side with in the longitudinal direction substantially parallel to the alignment Liquid cooling means is formed with manipulators for movement of the rolling stock, that in addition to and parallel to the longitudinal extent of the liquid cooling devices, the laying area of the cooling bed is and that the transverse transport means at least two simultaneously between the roller table rollers movable support arms, each having at its ends disposed there Walzgutauflagen, these conditions on the support arms in the transverse direction of the directional position in the region of the roller table in the laying area of the cooling bed movable, lowered and can be raised so that only the supports the conveying plane of the roller table or Overhang the upper edge of the roller table.
Die mit der Erfindung erzielten Vorteile liegen insbesondere darin, daß auf einfache Weise mit der Vorrichtung in Sequenz im Quertransportbereich des Rollganges Walzgut mit hoher Genauigkeit positionierbar und achsial richtbar ist, wobei mittels der Walzgutauflagen des Quertransportmittels gleichzeitig, also ohne Beeintächtigung der Einstellung und des achsialen Richtvorganges, ein vorhergehend gerichtetes und bereitgestelltes Walzgut in die Ablagebereiche der Kühleinrichtungen oder von diesen in den Auflagebereich vom Kühlbett oder vom Rollgang direkt auf das Kühlbett verbracht werden kann. Dabei ist es wichtig, daß lediglich die Walzgutauflagen der zwischen den Rollen bewegbaren Tragarame des Quertransportmittels über das obere Niveau der Rollgangrollen bzw. deren Förderungsebene anhebbar sind. Bei dieser Ausbildungsform der Vorrichtung ist es möglich, mindestens zwei Härteeinrichtungen an einer Seite des Rollganges anzuordnen, so daß lediglich einseitig ein Kühlbett vorzusehen ist, was wirtschaftliche Vorteile erbringt. Ein am Rollgang positioniertes und achsfluchtend gerichtetes Walzgut kann mittels der Auflagen der Tragarme von diesem abgehoben und beispielsweise in einen Ablagebereich einer Flüssigkeits-Kühleinrichtung, die als Manipulator ausgebildet ist, abgelegt werden. Danach ist das Quertransportmittel freigesetzt für weitere Walzgutquertransporte, wobei der Manipulator alleine und selbsttätig das abgelegte Walzgut in seiner Querschnittslage einrichten, in das Kühlmedium zumindest teilweise einbringen, ausheben und für einen Transport zum Kühlbett bereitstellen kann. Diese erfindungswesentliche Trennung von Quertransport des Walzgutes auch über belegte Kühleinrichtungen hinweg mit letztlich einer Ablage am Kühlbett und ein genaues Einsetzen des Walzgutes in das Kühlmedium verbessert die Genauigkeit der Manipulation sowie der Abkühlbehandlung und führt zuverlässig zu gehärteten Walzprodukten mit konstant hoher Güte. In vorteilhafter und wirtschaftlicher Weise ist die Leistung bzw. der Durchsatz der Vorrichtung bei Verwendung von zwei Härteeinrichtungen nebeneinander etwa verdoppelt.The advantages achieved by the invention are, in particular, that in a simple manner with the device in sequence in the transverse transport region of the roller table rolling stock can be positioned and axially aligned with high accuracy, wherein by means of Walzgutauflagen the transverse transport simultaneously, so without Beeintächtigung the setting and the axial straightening process , a previously directed and provided Walzgut can be placed in the storage areas of the cooling devices or from these in the support area of the cooling bed or roller table directly on the cooling bed. It is important that only the Walzgutauflagen the movable between the roles Tragarame of the transverse conveyor over the upper level of the roller table rollers or their promotion level can be raised. In this embodiment of the device, it is possible to arrange at least two curing devices on one side of the roller table, so that only one side a cooling bed is provided, which provides economic advantages. A rolling stock positioned on the roller table and directed in alignment with the axis can be lifted from it by means of the supports of the support arms and stored, for example, in a storage area of a liquid cooling device designed as a manipulator. Thereafter, the transverse transport means is released for further Walzgutquertransporte, the manipulator alone and automatically set up the stored rolling stock in its cross-sectional position, at least partially bring in the cooling medium, dig out and can provide for transport to the cooling bed. This invention essential separation of transverse transport of the rolling stock even over occupied cooling devices with ultimately a shelf on the cooling bed and an accurate insertion of the rolling stock in the cooling medium improves the accuracy of manipulation and the cooling treatment and leads reliably to hardened rolled products with constant high quality. In an advantageous and economical manner, the performance or the throughput of the device when using two hardening devices next to each other is approximately doubled.
Wenn die Vorrichtung für ein Walzgut mit der Form einer Fahr- oder Eisenbahnschiene, welche in zwei Querschnittsbereichen am Rollgang aufliegt, vorgesehen ist und die Positioniereinrichtung als elektronisch steuerbares Mittel ausgebildet ist und/oder ein Ausrichtlineal oder einen Queranschlag aufweist, kann in günstiger Weise die Verweilzeit der Schiene am Rollgang verkürzt, die Temperaturführung verbessert und gegebenenfalls die Anlagenleistung erhöht werden. Weiers ist diese Lage besonders gut für eine sogenannte " Kopf unten" Senkrechtstellung der Schiene mittels der Manipulatoren geeignet.When the device is provided for a rolling stock in the form of a rail or rail track which rests on the roller table in two cross-sectional areas and the positioning device is designed as an electronically controllable means and / or has an alignment ruler or a transverse stop, the dwell time can be favorably achieved shortened the rail on the roller table, the temperature control improved and, where appropriate, the system performance can be increased. Weiers, this situation is particularly well suited for a so-called "head down" vertical position of the rail by means of manipulators.
Wenn, wie bei einer Ausgestaltung der Erfindung vorgesehen sein kann, die Flüssigkkühleinrichtungen als Tauchbecken ausgebildet sind, die bodenseitig und gegebenenfalls seitwärts wirksame, horizontal und vertikal ausgerichtete Anschläge zur Nivellierung und Ausrichtung des Walzgutes aufweisen, kann insbesondere bei einer Abkühlung von Teilen des Querschnittes einer Schiene eine über deren Länge höchst konstante Abkühlung und Härteverteilung erreicht werden, was eine Gütesicherung des Erzeugnisses fördert.If, as may be provided in one embodiment of the invention, the Flüssigkkühleinrichtungen are designed as a dip tank, the bottom side and optionally have sideways effective, horizontally and vertically aligned stops for leveling and alignment of the rolling, especially when cooling of parts of the cross section of a rail a over the length of highly constant cooling and hardness distribution can be achieved, which promotes a quality assurance of the product.
Vorteilhaft für konstante und gute Gebrauchseigenschaften ist, wenn in der Vorrichtung Niederhaltemittel für das Walzgut, insbesondere für eine Schiene, vorgesehen sind, mit welchen Mitteln das Walzgut/die Schiene während des Abkühlens an die Nivelüerungsanschläge im Tauchbecken andrückbar ist, weil damit eine durch die Abkühlung verursachte Krümmung wirksam verhindert und die jeweilige örtliche Kühlung der Oberfläche vollkommen gleich gehalten werden kann.Advantageous for constant and good performance is when in the device hold-down means for the rolling stock, in particular for a rail, are provided, by which means the rolling stock / the rail during cooling to the Nivelüerungsanschläge in the dip tank is pressed, because thus one by the cooling caused curvature effectively prevented and the respective local cooling of the surface can be kept completely the same.
Besondere wirtschaftliche Vorteile sind bei einer Verwendung der oben beschnebenen Vorrichtung zum Härten zumindest des Kopfes von Schienen mit einer Länge von größer als 50 m und nachfolgender Abkühlung auf Raumtemperatur bei einer die Zuförderfrequenz überschreitenden Durchlaufzeit einer Schiene durch die Härteanlage gegeben, weil mit vergleichsweise niedrigen Anlagenkosten große Leistungssteigerungen möglich sind.Particular economic advantages are when using the above beschnebenen device for hardening at least the head of rails with a length of greater than 50 m and subsequent cooling to room temperature at a Zuförderfrequenz exceeding cycle time a rail given by the hardening system, because with comparatively low system costs large performance increases are possible.
Im folgenden wir die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnung näher erläutert, wobei nachstehend die jeweils gleich gehaltenen Bezugszeichen aufgelistet sind.In the following we will explain the invention with reference to only one embodiment representing performing drawing, wherein below each held the same reference numerals are listed.
Fig. 1 zeigt eine erfindungsgemäße Vorrichtung mit einer Härteeinrichtung 3 bestehend aus zwei Flüssigkeitskühleinrichtungen 31 und 32, welche zwischen einem Rollgang 1 und einem Kühlbett 4 angeordnet sind.
In der beispielhaften schematischen Darstellung ist in einer der Flüssigkeitskühleinrichtungen 31 der Kopf der Schiene S in eine Kühlflüssigkeit 315 eingetaucht gezeigt. Durch Niederhaltemittel 314 und Nivellierungsanschläge 313 ist die Schiene in einem Tauchbecken 312 derart positionierbar, daß exakt nur eine forcierte Kopfkühlung derselben erfolgt. Es ist jedoch auch möglich, durch tiefer unter die Oberfläche einer Kühlflüssigkeit 315 gelegte Anschläge 313 den gesamten Querschnitt der Schiene forciert zu kühlen. Eine zweite Flüssigkühleinrichtung 32 steht in Bereitschaft.1 shows a device according to the invention with a hardening
In the exemplary schematic illustration, in one of the
Wie weiter Fig. 1 zeigt, ist von einer Walzenstraße (nicht dargestellt) kommend eine Schiene S am Rollgang 1 positioniert und kann durch ein Ausrichtmittel 2 gegebenenfalls mit einem Ausrichtlineal 21 achsfluchtend gerichtet werden. Ein Quertransportmittel 5 mit Tragarmen 51 und jeweils einer Walzgutauflage 52 ist in den Bereich des Rollganges 1 rückführbar angeordnet. Es ist jedoch auch möglich, ein derartiges Quertransportmittel 5 im Bereich des Kühlbettes festzulegen.As further shown in FIG. 1, a rail S (not shown) coming from a roll train is positioned on the roller table 1 and can be aligned in alignment with the axis by an alignment means 2, optionally with an
Zum Quertransport erfolgt eine simultane Verschiebung der Tragarme 51 derart, daß die darauf angeordneten Walzgutauflagen 52 bei deren Anheben die Schiene S vom Rollgang 1 achsfluchtend abheben, tragen und quer in die Richtung des Kühlbettes 4 verbringen können. Dabei ist es erfindungswesentlich, daß im Zuge eines Quertransportes ausschließlich die Walzgutauflagen 52 des Quertransportmittels 5, auch wenn die Auflagen 52 in den äußersten gegenüberliegenden Bereich verfahren sind, zum Beispiel bei einem Ablegen einer Schiene S, auf einen Ablagebereich 41 des Kühlbettes 4, eine Förderebene 11 des Rollganges vertikal überragen können.For transverse transport, a simultaneous displacement of the
Eine positionierte und axial ausgerichtete Schiene S, die vorteilhaft in zwei Querschnittsbereichen auf der Förderebene 11 des Rollganges 1 liegt, kann nun in dieser Lage mittels der Walzgutauflage 52 vertikal abgehoben und im wesentlichen horizontal bzw. quer zu einer in Bereitschaft stehenden Flüssigkeitskühleinrichtung, in Fig. 1 Position 32, verbracht werden. Eine derartige Querschnittslage der Schiene S auf den Walzgutauflagen 52 ist günstig für eine Übernahme derselben und eine " Kopf unten" Vertikalstellung durch einen Manipulator 321, mittels welchen auch ein Absenken oder Einbringen des Schienenkopfes in eine Kühlflüssigkeit 325 erfolgen kann. Während der Verweilzeit der Schiene in der Kühlflüssigkeit 325 kann diese zwecks einer Stabilisierung mittels Niederhaltemittel 324 und Nivellierungsanschläge 323 eingespannt sein.A positioned and axially aligned rail S, which is advantageous in two cross-sectional areas on the conveying plane 11 of the roller table 1, can now in this position by means of
Weil erfindungsgemäß, wie vorher erwähnt, ausschließlich die Walzgutauflagen 52 auf ein über der Förderebene 11 des Rollgan1ges 1 gelegenes Niveau gebracht werden können, kann trotz Quertransportaktivitäten eine Folgeschiene vom Walzwerk auf den Rollgang 1 gebracht werden und auf diesem ein- und ausgerichtet werden. Ein Ausbringen einer Schiene S aus den Flüssigkeitseinrichtungen 31,32 mittels Manipulatoren 311, 321 und ein Abnehmen derselben durch die Walzgutauflagen 52 kann im wesentlichen gleichartig erfolgen, wonach ein Verbringen und Auflegen auf den Ablagebereich 41 des Kühlbettes 4 erfolgen.
Bei hohen Walzleistungen kann die Härteeinrichtung 3 auch mit mehr als zwei Flüssigkühleinrichtungen ausgeführt sei, allenfalls ist eine programmierbare Steuereinheit vorteilhaft für einen Fertigungsablauf einsetzbar.Because according to the invention, as previously mentioned, only the Walzgutauflagen 52 can be brought to a level above the conveying plane 11 of Rollgan1ges 1 level, despite transverse transport activities a follower rail can be brought from the rolling mill on the roller table 1 and on this one and aligned. A spreading out of a rail S from the
At high rolling performance, the hardening
Claims (6)
- Apparatus for thermally quenching and tempering from the rolling heat at least portions of the cross-section over the longitudinal extent of sequentially produced profiled rolled material, in particular for hardening at least the top of rails of a length greater than 50 m, and subsequently cooling to room temperature, said apparatus consisting, in essence, of a roller conveyor, a means for aligning the rolled material in axial alignment, a transport means with a support for the rolled material, for moving the latter transversely, a hardening facility with a manipulation arrangement, and a cooling bed, characterized in that the roller conveyor (1) has a facility by which the rolled material (S), delivered supported in at least one cross-sectional region, is positioned in the longitudinal direction, and has an associated alignment means (2), the hardening facility (3) is constituted by at least two liquid cooling facilities (31, 32), which are disposed adjacently to one another and are substantially parallel to the alignment means in their longitudinal direction, said liquid cooling facilities having manipulators (311, 321) for moving the rolled material (S), the deposition region (41) of the cooling bed (4) is located next to and parallel to the longitudinal extent of the liquid cooling facilities, and the transverse transport means (5) has at least two supporting arms (51) that can be moved simultaneously between the rollers of the roller conveyor, said supporting arms having supports (52) for rolled material that are respectively disposed end-wise thereon, these supports on the supporting arms being capable of being moved in the transverse direction, from the aligning position in the region of the roller conveyor (1) to the deposition region (41) of the cooling bed (4), and lowered and raised in such a way that solely the supports project over the conveying plane (11) of the roller conveyor (1).
- Apparatus according to Claim 1, characterized in that said apparatus is provided for a rolled material (S) having the form of a running rail or railway rail that bears on the roller conveyor (1) in two cross-sectional regions, and the positioning facility is realized as electronically controllable means and/or has an alignment guide (21) or a stop.
- Apparatus according to either of Claims 1 or 2, characterized in that the liquid cooling facilities (31, 32) are realized as immersion basins (312, 322) having horizontally aligned stops (313, 323) that act at the base and, if appropriate, laterally, for levelling the rolled material (S).
- Apparatus according to Claims 1 to 3, characterized in that associated with each immersion basin (312, 322) are manipulators (311, 321) by means of which the rolled material (S), in particular a rail, can be removed from the supports (52) of the transverse transport means (5), placed in the immersion basin (312, 322), being capable of being arranged vertically top down, and deposited again on the supports (52).
- Apparatus according to any one of Claims 1 to 4, characterized in that there are provided hold-down means (314, 324) for the rolled material (S), in particular for a rail, said means enabling the rolled material / the rail (S) to be pressed onto the levelling stops (313, 323) in the immersion basin (312, 322) during cooling.
- Use of the apparatus according to any one of Claims 1 to 5 for hardening at least the top of rails of over 50 m in length and for their subsequent cooling to room temperature, in the case in which the period of passage of a rail through the hardening installation exceeds the delivery frequency.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0144201A AT410549B (en) | 2001-09-13 | 2001-09-13 | DEVICE FOR TURNING ROLLED GOODS WITH LONG LENGTH |
| AT14422001 | 2001-09-13 | ||
| PCT/AT2002/000264 WO2003023076A2 (en) | 2001-09-13 | 2002-09-12 | Device for quenching and tempering long-length rolling stock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1425426A2 EP1425426A2 (en) | 2004-06-09 |
| EP1425426B1 true EP1425426B1 (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02797886A Expired - Lifetime EP1425426B1 (en) | 2001-09-13 | 2002-09-12 | Device for quenching and tempering long-length rolling stock |
Country Status (18)
| Country | Link |
|---|---|
| US (2) | US6689228B2 (en) |
| EP (1) | EP1425426B1 (en) |
| JP (1) | JP4176635B2 (en) |
| KR (1) | KR100629030B1 (en) |
| CN (1) | CN1276102C (en) |
| AT (2) | AT410549B (en) |
| AU (1) | AU2002332945B2 (en) |
| BR (1) | BR0212448B1 (en) |
| CA (1) | CA2460493C (en) |
| DE (1) | DE50210776D1 (en) |
| ES (1) | ES2290357T3 (en) |
| HR (1) | HRP20040245A2 (en) |
| HU (1) | HU226551B1 (en) |
| MX (1) | MXPA04002310A (en) |
| PL (1) | PL197074B1 (en) |
| RU (1) | RU2275434C2 (en) |
| UA (1) | UA73688C2 (en) |
| WO (1) | WO2003023076A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU190143U1 (en) * | 2018-12-29 | 2019-06-21 | Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") | Rolling mill stop |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410549B (en) * | 2001-09-13 | 2003-05-26 | Voest Alpine Schienen Gmbh & C | DEVICE FOR TURNING ROLLED GOODS WITH LONG LENGTH |
| AT505930B1 (en) * | 2008-02-04 | 2009-05-15 | Voestalpine Schienen Gmbh | DEVICE FOR HARDENING RAILS |
| IT1392174B1 (en) * | 2008-12-05 | 2012-02-22 | Danieli Off Mecc | RAIL HANDLING MACHINE AND RELATIVE HANDLING PROCESS |
| ITMI20090892A1 (en) | 2009-05-20 | 2010-11-21 | Danieli Off Mecc | COOLING TANK FOR RAILS |
| RU2479367C2 (en) * | 2009-06-23 | 2013-04-20 | Смс Зимаг Аг | Method and device slab forming |
| AT512792B1 (en) * | 2012-09-11 | 2013-11-15 | Voestalpine Schienen Gmbh | Process for the production of bainitic rail steels |
| DE102012020844A1 (en) | 2012-10-24 | 2014-04-24 | Thyssenkrupp Gft Gleistechnik Gmbh | Process for the thermomechanical treatment of hot-rolled profiles |
| PL2781608T3 (en) | 2013-03-22 | 2016-04-29 | Primetals Tech Italy S R L | System for thermal treatment of rails |
| CN105002333A (en) * | 2015-08-11 | 2015-10-28 | 无锡乐华自动化科技有限公司 | Automatic effective quenching and water cooling equipment |
| CN105018692A (en) * | 2015-08-11 | 2015-11-04 | 无锡乐华自动化科技有限公司 | High-performance quenching automation equipment |
| CN108593332A (en) * | 2018-06-29 | 2018-09-28 | 机械科学研究总院海西（福建）分院有限公司 | Automatic sampling machine people, bar automatic sampling equipment and sampling method comprising it |
| JP7231471B2 (en) * | 2019-04-23 | 2023-03-01 | リョービ株式会社 | Quenching equipment and method |
| CN111850257B (en) * | 2019-04-29 | 2021-12-28 | 无锡福爱尔金属科技有限公司 | Metal material processing system |
| CN115627429B (en) * | 2022-10-24 | 2023-08-04 | 中际同创电子科技(江苏)有限公司 | Quenching device for pressureless infiltration casting of aluminum magnesium alloy ingot |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4003363C1 (en) | 1990-02-05 | 1991-03-28 | Voest-Alpine Industrieanlagenbau Ges.M.B.H., Linz, At | Hardening rails from rolling temp. - using appts. with manipulator engaging rail from exit roller table with support arms positioned pivotably on each side |
| IN191289B (en) * | 1994-07-19 | 2003-11-01 | Voest Alpine Schienen Gmbh | |
| US6336980B1 (en) * | 1999-05-21 | 2002-01-08 | Danieli Technology, Inc. | Method for in-line heat treatment of hot rolled stock |
| AT409268B (en) * | 2000-05-29 | 2002-07-25 | Voest Alpine Schienen Gmbh & C | METHOD AND DEVICE FOR HARDENING RAILS |
| AT410549B (en) * | 2001-09-13 | 2003-05-26 | Voest Alpine Schienen Gmbh & C | DEVICE FOR TURNING ROLLED GOODS WITH LONG LENGTH |
-
2001
- 2001-09-13 AT AT0144201A patent/AT410549B/en not_active IP Right Cessation
- 2001-12-03 US US09/998,159 patent/US6689228B2/en not_active Expired - Lifetime
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2002
- 2002-09-12 RU RU2004111003/02A patent/RU2275434C2/en not_active IP Right Cessation
- 2002-09-12 EP EP02797886A patent/EP1425426B1/en not_active Expired - Lifetime
- 2002-09-12 JP JP2003527136A patent/JP4176635B2/en not_active Expired - Fee Related
- 2002-09-12 MX MXPA04002310A patent/MXPA04002310A/en active IP Right Grant
- 2002-09-12 AT AT02797886T patent/ATE371045T1/en not_active IP Right Cessation
- 2002-09-12 WO PCT/AT2002/000264 patent/WO2003023076A2/en active IP Right Grant
- 2002-09-12 BR BRPI0212448-3A patent/BR0212448B1/en not_active IP Right Cessation
- 2002-09-12 CN CNB028178122A patent/CN1276102C/en not_active Expired - Fee Related
- 2002-09-12 HU HU0401703A patent/HU226551B1/en not_active IP Right Cessation
- 2002-09-12 AU AU2002332945A patent/AU2002332945B2/en not_active Ceased
- 2002-09-12 DE DE50210776T patent/DE50210776D1/en not_active Expired - Lifetime
- 2002-09-12 PL PL368648A patent/PL197074B1/en unknown
- 2002-09-12 CA CA2460493A patent/CA2460493C/en not_active Expired - Fee Related
- 2002-09-12 ES ES02797886T patent/ES2290357T3/en not_active Expired - Lifetime
- 2002-09-12 KR KR1020047003726A patent/KR100629030B1/en active IP Right Grant
- 2002-12-09 UA UA2004042684A patent/UA73688C2/en unknown
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2003
- 2003-12-08 US US10/728,826 patent/US6989063B2/en not_active Expired - Lifetime
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2004
- 2004-03-12 HR HR20040245A patent/HRP20040245A2/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU190143U1 (en) * | 2018-12-29 | 2019-06-21 | Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") | Rolling mill stop |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50210776D1 (en) | 2007-10-04 |
| PL197074B1 (en) | 2008-02-29 |
| AT410549B (en) | 2003-05-26 |
| KR100629030B1 (en) | 2006-09-26 |
| HUP0401703A2 (en) | 2004-11-29 |
| CA2460493C (en) | 2010-11-30 |
| WO2003023076A3 (en) | 2003-09-12 |
| WO2003023076A2 (en) | 2003-03-20 |
| UA73688C2 (en) | 2005-08-15 |
| RU2275434C2 (en) | 2006-04-27 |
| HRP20040245A2 (en) | 2005-02-28 |
| CA2460493A1 (en) | 2003-03-20 |
| ATE371045T1 (en) | 2007-09-15 |
| ATA14422001A (en) | 2002-10-15 |
| BR0212448A (en) | 2004-08-17 |
| KR20040047828A (en) | 2004-06-05 |
| JP4176635B2 (en) | 2008-11-05 |
| RU2004111003A (en) | 2005-06-10 |
| ES2290357T3 (en) | 2008-02-16 |
| US6689228B2 (en) | 2004-02-10 |
| AU2002332945B2 (en) | 2005-10-20 |
| BR0212448B1 (en) | 2011-04-19 |
| MXPA04002310A (en) | 2005-04-08 |
| US20040113334A1 (en) | 2004-06-17 |
| CN1555421A (en) | 2004-12-15 |
| CN1276102C (en) | 2006-09-20 |
| US6989063B2 (en) | 2006-01-24 |
| JP2005501972A (en) | 2005-01-20 |
| HU226551B1 (en) | 2009-03-30 |
| US20030047852A1 (en) | 2003-03-13 |
| PL368648A1 (en) | 2005-04-04 |
| EP1425426A2 (en) | 2004-06-09 |
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