WO1996002340A1 - Wear-protection layer for casting rollers - Google Patents

Wear-protection layer for casting rollers Download PDF

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Publication number
WO1996002340A1
WO1996002340A1 PCT/DE1995/000930 DE9500930W WO9602340A1 WO 1996002340 A1 WO1996002340 A1 WO 1996002340A1 DE 9500930 W DE9500930 W DE 9500930W WO 9602340 A1 WO9602340 A1 WO 9602340A1
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WIPO (PCT)
Prior art keywords
wear
protection layer
casting
grains
resistant
Prior art date
Application number
PCT/DE1995/000930
Other languages
German (de)
French (fr)
Inventor
Hannes Schulze Horn
Original Assignee
Siemens Aktiengesellschaft
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Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE59504502T priority Critical patent/DE59504502D1/en
Priority to EP95925690A priority patent/EP0773844B1/en
Publication of WO1996002340A1 publication Critical patent/WO1996002340A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars

Definitions

  • the invention relates to a casting device for metal strips. with two casting rolls, which form a casting roll gap between them and on which a water-cooled jacket made of copper is arranged, on which a separation of liquid metal, preferably steel, between the two rolls takes place in the form of solidification trays, the solidification trays in the Casting nip are formed into a band with compaction.
  • a casting device of the aforementioned type is known from PCT / DE 93/01228, which has not been previously published. In such
  • the cooled copper jacket has an outer wear protection layer on the casting rolls which consists of wear-resistant grains or lamellae in a binder, in particular of metal, for example a nickel-cobalt alloy. Wear-resistant grains that resist the abrasive effect of the moving, solidified metal on the surface of the casting rolls and that are embedded in a binder that is still a good heat conductor make it possible to achieve both sufficient wear resistance and a sufficient cooling effect.
  • the decrease in the cooling effect can be largely compensated for by a thinner lubricant layer on the casting rolls. Surprisingly, the surface formation is advantageously improved.
  • the antiwear layer may be covered by a tie layer, e.g. made of nickel, is connected to the cooled copper jacket of the casting rolls.
  • a tie layer e.g. made of nickel
  • Such a nickel layer can simply, e.g. be applied electrolytically to copper.
  • a more wear-resistant binder matrix e.g. made of a nickel-cobalt alloy, possibly with an alloy content that further increases strength, such as molybdenum, titanium or zircon.
  • a highly heat-resistant gas turbine blade alloy is advantageously used for this layer.
  • Such alloys are relatively inexpensive and all treatment parameters are known for such alloys, especially for sintering.
  • the wear-resistant grains advantageously consist of metal oxides, such as aluminum oxide, zirconium oxide or the like, which, although relatively poorly heat-conducting, are also very wear-resistant even at high temperatures.
  • metal oxides such as aluminum oxide, zirconium oxide or the like
  • carbide particles for example in the form of lamellae, are added to the wear-resistant metal oxide grains. Tungsten carbide, but also silicon carbide or titanium carbide, are particularly suitable for this.
  • the grain size of the wear-resistant grains or lamellae is advantageously less than 30 ⁇ m, in particular less than 10 ⁇ m.
  • a particularly tight packing of the wear-resistant grains can be achieved in the outer area of the wear protection layer.
  • the wear protection layer is relatively thin, its thickness is advantageously less than 2 mm, preferably less than 1 mm, in particular, however, only slightly above about 0.2 mm. This is done on the one hand in order to keep the thermal stresses in the wear protection layer low, so that they can be absorbed by the copper cladding via the nickel, possibly also a hard solder intermediate layer, and on the other hand, so that the cooling of the liquid metal is only slightly affected.
  • the wear protection layer is applied by a plasma spraying process, but it is also possible to apply the binder and the incorporated wear-resistant grains or lamellae in a slurry and to let them dry or to dry them open. In all cases, the wear protection layer is finally sintered. Sintering can be done by bring electrical energy, for example inductively, but also sintering with gas flames or, particularly advantageously, sintering with a laser is possible. In the case of a laser, it is very advantageous to precisely adjust the energy introduced while maintaining a maximum penetration depth.
  • FIG. 1 shows a cross section through a wear protection layer on an enlarged scale with regularly distributed wear-resistant grains and FIG. 2 shows a wear protection layer with increasing density of the wear-resistant grains towards the outside.
  • 1 denotes the copper jacket with a channel 2 through which cooling water flows.
  • the cooling water channel 2 which e.g. having an elliptical configuration, pulsating pressurized water is advantageously applied in order to achieve an oscillation of the surface, at least by a few.
  • the partially ceramic wear protection layer there is a particularly good detachment of the metal strip from the casting rolls.
  • connection or adhesion-promoting layer 3 for example made of N j _, preferably electrolytically deposited, made of hard solder or the like.
  • the actual wear protection layer with the binder 4 for example made of a nickel-based alloy, is located on the connection layer 3 Nickel-cobalt alloy or the like and the individual grains 5.
  • the wear-resistant grains 5 consist, for example, of metal oxides, preferably zirconium oxide, aluminum oxide or the like. Their concentration preferably increases towards the surface, as shown in FIG.
  • Outer zone 6 significantly more oxide or carbide grains or Lamellae are located in the inner zone 7.
  • the outer layer for example approximately 10 grain layers, consists in particular of a dense grain or lamella pack.
  • the wear protection layer according to the invention It is particularly advantageous in the case of the wear protection layer according to the invention that it can be reworked relatively easily if there are signs of wear that go beyond tolerance limits. It is then sufficient simply to partially apply a new wear protection layer by plasma spraying and to apply this by grinding, e.g. with diamond / ceramic grinding wheels, to size.
  • the actual copper sheath optionally in one piece as a ring or composed of individual, preferably extruded, profiles, is thus protected and has a long service life.
  • the plasma spraying, re-sintering and grinding can even take place in the working position of the casting rolls; all that is necessary for this is a break in operation in which the wear protection layer material is sprayed on, sintered and then ground off by a known, transportable, grinding device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

A casting device for metal strips comprises two rollers for continuous casting which between them form a slit and are provided with a water-cooled copper mantel on which a deposit builds up in the form of solidified flakes from the liquid metal (preferably steel) passing between the rollers; the flakes are compressed in the slit to form a strip and the cooled copper mantel (1) on the rollers has a wear-protection layer (4) made up of wear-resistant grains (5) or lamellae in a binder, in particular of metal, e.g. a nickel-cobalt alloy.

Description

Beschreibung description
Gießwalzen-VerschleißschutzschichtCasting roll wear protection layer
Die Erfindung betrifft eine Gießeinrichtung für Metallbänder. mit zwei Gießwalzen, die zwischen sich einen Gießwalzspalt bilden und auf denen ein wassergekühlter Mantel aus Kupfer angeordnet ist, auf dem eine Abscheidung von zwischen die beiden Walzen gegebenem flüssigem Metall, vorzugsweise Stahl, in Form von Erstarrungsschalen stattfindet, wobei die Erstar¬ rungsschalen in dem Gießwalzspalt unter Verdichtung zu einem Band geformt werden.The invention relates to a casting device for metal strips. with two casting rolls, which form a casting roll gap between them and on which a water-cooled jacket made of copper is arranged, on which a separation of liquid metal, preferably steel, between the two rolls takes place in the form of solidification trays, the solidification trays in the Casting nip are formed into a band with compaction.
Aus der nicht vorverόffentlichten PCT/DE 93/01228 ist eine Gießeinrichtung der vorgenannten Art bekannt. Bei solchenA casting device of the aforementioned type is known from PCT / DE 93/01228, which has not been previously published. In such
Gießeinrichtungen ergibt sich, wenn zur Qualitätsverbesserung des erzeugten Bandes die Vereinigung der auf den beiden Gie߬ walzen gebildeten Erstarrungεschalen nicht nur geringfügig vor oder direkt in dem Gießwalzspalt erfolgt, für die Ober¬ fläche des Kupfermantels eine erhebliche Verschleißbeanspru¬ chung.Pouring results when carried out to improve the quality of the strip produced, the union of the Erstarrungεschalen formed on the two rollers Gie߬ not only slightly ahead of or directly into the Gießwalzspalt, for the upper shell surface of the copper ¬ a significant Verschleißbeanspru¬ monitoring.
Aus der Veröffentlichung "Development of Twin-Dru Strip Caster for Stainless Steel", Metec Conference, Juni 1994, Mitsubishi/Nippon Steel ist eine Bandgießeinrichtung bekannt, bei der ein Edelstahlband im "Kissing Point" zweier Kühl- trommein gebildet wird. Diese Kühltrommeln weisen eine Kupfer-Stahl-Trennschicht aus Nickel auf.From the publication "Development of Twin-Dru Strip Caster for Stainless Steel", Metec Conference, June 1994, Mitsubishi / Nippon Steel, a band casting device is known in which a stainless steel band is formed in the "kissing point" of two cooling drums. These cooling drums have a copper-steel separating layer made of nickel.
Es ist Aufgabe, der Erfindung, eine Verschleißschutzschicht und eine Verfahrensweise zu ihrer Aufbringung anzugeben, die bei pressend arbeitenden Gießwalzen den Verschleiß der Oberfläche des Kupfermantels ausschließt oder zumindest ausschließt oder zumindest erheblich verringert, ohne die Kühlwirkung des Kupfermantels auf die Erstarrungsschalen entscheidend zu beeinträchtigen. Die Aufgabe wird dadurch gelöst, daß der gekühlte Kupferman¬ tel auf den Gießwalzen eine äußere Verschleißschutzschicht aufweist, die aus verschleißfesten Körnern oder Lamellen in einem Bindemittel, insbes. aus Metall, z.B. einer Nickel- Kobalt-Legierung, besteht. Durch verschleißfeste Körner, die der abrasiven Wirkung des sich verschiebenden, erstarrten Metalls auf der Oberfläche der Gießwalzen widerstehen und die in ein noch gut wärmeleitendes Bindemittel eingebettet sind, ist es möglich, sowohl eine ausreichende Verschleißfestigkeit als auch eine noch ausreichende Kühlungswirkung zu erreichen. Dabei kann die Abnahme der Kühlungswirkung durch eine dünnere Schmiermittelschicht auf den Gießwalzen weitgehend kompen¬ siert werden. Überraschenderweise ergibt sich eine vorteil¬ haft verbesserte Oberflächenausbildung.It is an object of the invention to provide a wear protection layer and a procedure for its application which, in the case of casting rolls which work in a pressing manner, exclude or at least exclude or at least substantially reduce the wear on the surface of the copper jacket without significantly impairing the cooling effect of the copper jacket on the solidification shells. The object is achieved in that the cooled copper jacket has an outer wear protection layer on the casting rolls which consists of wear-resistant grains or lamellae in a binder, in particular of metal, for example a nickel-cobalt alloy. Wear-resistant grains that resist the abrasive effect of the moving, solidified metal on the surface of the casting rolls and that are embedded in a binder that is still a good heat conductor make it possible to achieve both sufficient wear resistance and a sufficient cooling effect. The decrease in the cooling effect can be largely compensated for by a thinner lubricant layer on the casting rolls. Surprisingly, the surface formation is advantageously improved.
Es ist vorgesehen, daß die Veschleißschutzschicht durch eine Verbindungsschicht, z.B. aus Nickel, mit dem gekühlten Kupfermantel der Gießwalzen verbunden ist. Eine derartige Nickelschicht kann einfach, z.B. elektrolytisch, auf Kupfer aufgebracht werden. Sie verbindet sich in einem Sintervorgang einfach und fest mit einer darüber befindlichen verschlei߬ festeren Bindemittelmatrix, z.B. aus einer Nickel-Kobalt- Legierung, ggf. mit einem die Festigkeit weiter erhöhenden Legierungsgehalt, etwa Molybdän, Titan oder Zirkon. Vorteil- haft wird ggf. für diese Schicht eine hochwarmfeste Gastur¬ binen-Schaufellegierung verwendet. Derartige Legierungen sind relativ kostengünstig, und für derartige Legierungen sind alle Behandlungsparameter bekannt, insbesondere für das Sintern.It is envisaged that the antiwear layer may be covered by a tie layer, e.g. made of nickel, is connected to the cooled copper jacket of the casting rolls. Such a nickel layer can simply, e.g. be applied electrolytically to copper. In a sintering process, it combines simply and firmly with a more wear-resistant binder matrix, e.g. made of a nickel-cobalt alloy, possibly with an alloy content that further increases strength, such as molybdenum, titanium or zircon. If necessary, a highly heat-resistant gas turbine blade alloy is advantageously used for this layer. Such alloys are relatively inexpensive and all treatment parameters are known for such alloys, especially for sintering.
Die veschleißfesten Körner bestehen vorteilhaft aus Metall- oxider., wie Aluminiumoxid, Zirkonoxid o.a., die zwar relativ schlecht wärmeleitend, aber auch bei hohen Temperaturen sehr verschleißfest sind. So ergibt sich bei geringen Gesamt- Oxidanteilen vorteilhaft eine noch gut wärmeleitende, aber trotzdem verschleißfeste Außenschicht auf den Gießwalzen, die bei erheblicher Erhöhung der Standzeit eine nur unerhebliche Vergrößerung der Gießwalzen zur Erreichung der gleichen Abscheideleistung wie auf Kupfer notwendig macht. Es ist da¬ bei vorteilhaft, wenn den verschleißfesten Metalloxidkörnern Carbidteilchen, z.B. in Lamellenform zugemischt werden, hier¬ für ist insbesondere Wolframcarbid, aber auch Siliziumcarbid oder Titancarbid geeignet.The wear-resistant grains advantageously consist of metal oxides, such as aluminum oxide, zirconium oxide or the like, which, although relatively poorly heat-conducting, are also very wear-resistant even at high temperatures. Thus, with a low total oxide content, there is advantageously a still good heat-conducting, but nonetheless wear-resistant outer layer on the casting rolls with a significant increase in tool life, an insignificant increase in the size of the casting rolls is necessary to achieve the same separation performance as on copper. It is advantageous if carbide particles, for example in the form of lamellae, are added to the wear-resistant metal oxide grains. Tungsten carbide, but also silicon carbide or titanium carbide, are particularly suitable for this.
Die Korngröße der verschleißfesten Körner oder Lamellen ist vorteilhaft kleiner als 30 um, insbesondere kleiner als 10 um. So kann vorteilhaft, z.B. eine besonders dichte Packung der verschleißfesten Körner im Außenbereich der Ver¬ schleißschutzschicht erreicht werden. Gleichzeitig ist bei den einzelnen Körnern die Gefahr des Zerbrechens durch die thermische Belastung bei der immer wiederkehrenden schock¬ artigen Erhitzung, wenn die Oberfläche beim Umlauf der Gie߬ walzen erneut mit dem flüssigen Stahl in Kontakt kommt, gering.The grain size of the wear-resistant grains or lamellae is advantageously less than 30 μm, in particular less than 10 μm. Advantageously, e.g. a particularly tight packing of the wear-resistant grains can be achieved in the outer area of the wear protection layer. At the same time, the risk of breakage due to the thermal load in the case of the recurring shock-like heating when the surface comes into contact again with the liquid steel during the circulation of the casting rolls is low in the individual grains.
Die Verschleißschutzschicht ist relativ dünn, ihre Dicke liegt vorteilhaft unter 2 mm, vorzugsweise unter 1 mm, insbe¬ sondere jedoch nur geringfügig über ca. 0,2 mm. Dies zum einen, um die thermischen Spannungen in der Verschlei߬ schutzschicht gering zu halten, so daß sie über die Nickel-, ggf- auch von einer HartlotZwischenschicht, von dem Kupfer¬ mantel aufgenommen werden können und zum zweiten, damit die Kühlung des flüssigen Metalls nur geringfügig beeinträchtigt wird.The wear protection layer is relatively thin, its thickness is advantageously less than 2 mm, preferably less than 1 mm, in particular, however, only slightly above about 0.2 mm. This is done on the one hand in order to keep the thermal stresses in the wear protection layer low, so that they can be absorbed by the copper cladding via the nickel, possibly also a hard solder intermediate layer, and on the other hand, so that the cooling of the liquid metal is only slightly affected.
Es ist vorgesehen, daß die Verschleißschutzschicht durch einen Plasmaspritzvorgang aufgebracht wird, es ist aber auch ebenso möglich, das Bindemittel und die eingelagerten ver¬ schleißfesten Körner oder Lamellen in einer Aufschlämmung aufzubringen und antrocknen zu lassen oder trocken aufzusie- ben. In allen Fällen wird die Verschleißschutzschicht schließlich gesintert. Das Sintern kann sowohl durch das Ein- bringen elektrischer Energie, z.B. induktiv erfolgen, aber auch Sintern mit Gasflammen oder aber, besonders vorteilhaft, Sintern mit einem Laser ist möglich. Bei einem Laser ist sehr vorteilhaft die genaue Einstellung der eingebrachten Energie unter Einhaltung einer maximalen Eindringtiefe möglich.It is provided that the wear protection layer is applied by a plasma spraying process, but it is also possible to apply the binder and the incorporated wear-resistant grains or lamellae in a slurry and to let them dry or to dry them open. In all cases, the wear protection layer is finally sintered. Sintering can be done by bring electrical energy, for example inductively, but also sintering with gas flames or, particularly advantageously, sintering with a laser is possible. In the case of a laser, it is very advantageous to precisely adjust the energy introduced while maintaining a maximum penetration depth.
Die Erfindung wird anhand von Zeichnungen näher erläutert, aus denen weitere, auch erfindungswesentliche Einzelheiten entnehmbar sind. Im einzelnen zeigen:The invention is explained in more detail with reference to drawings, from which further details that are also essential to the invention can be gathered. In detail show:
FIG 1 einen Querschnitt durch eine Verschleißschutzschicht in vergrößertem Maßstab mit regelmäßig verteilten verschleißfesten Körnern und FIG 2 eine Verschleißschutzschicht mit nach außen zunehmen- der Dichte der verschleißfesten Körner.1 shows a cross section through a wear protection layer on an enlarged scale with regularly distributed wear-resistant grains and FIG. 2 shows a wear protection layer with increasing density of the wear-resistant grains towards the outside.
In FIG 1 bezeichnet 1 den Kupfermantel mit einem von Kühl¬ wasser durchströmten Kanal 2. Der Kühlwasserkanal 2, der z.B. eine elliptische Ausbildung aufweist, wird vorteilhaft mit pulsierendem Druckwasser beaufschlagt, um eine Oszillation der Oberfläche zumindest um einige um zu erreichen. So ergibt sich in Verbindung mit der teilweise keramischen Ver¬ schleißschutzschicht eine besonders gute Ablösung des Metall¬ bandes von den Gießwalzen.In FIG. 1, 1 denotes the copper jacket with a channel 2 through which cooling water flows. The cooling water channel 2, which e.g. having an elliptical configuration, pulsating pressurized water is advantageously applied in order to achieve an oscillation of the surface, at least by a few. In connection with the partially ceramic wear protection layer, there is a particularly good detachment of the metal strip from the casting rolls.
Auf der Oberfläche des Kupfermantels 1 befindet sich eine Verbindungs- oder Haftvermittlungsschicht 3, z.B. aus Nj_, vorzugsweise elektrolytisch abgeschieden, aus Hartlot o.a. Auf der Verbindungsschicht 3 befindet sich die eigentliche Verschleißschutzschicht mit dem Bindemittel 4, z.B. aus einer Nickel-Basislegierung, einer Nickel-Kobalt-Legierung o.a. und den einzelnen Körnern 5. Die verschleißfesten Körner 5 bestehen z.B. aus Metalloxiden, vorzugsweise Zirkonoxid, Aluminiumoxid o.a. Ihre Konzentration nimmt vorzugsweise zur Oberfläche hin zu, wie in FIG 2 gezeigt, wo sich in derOn the surface of the copper jacket 1 there is a connection or adhesion-promoting layer 3, for example made of N j _, preferably electrolytically deposited, made of hard solder or the like. The actual wear protection layer with the binder 4, for example made of a nickel-based alloy, is located on the connection layer 3 Nickel-cobalt alloy or the like and the individual grains 5. The wear-resistant grains 5 consist, for example, of metal oxides, preferably zirconium oxide, aluminum oxide or the like. Their concentration preferably increases towards the surface, as shown in FIG
Außenzone 6 deutlich mehr Oxid- oder auch Carbidkörner bzw. Lamellen befinden als in der Innenzone 7. Die Außenschicht, z.B. ca. 10 Kornlagen, besteht dabei insbesondere aus einer dichten Körner- bzw. Lamellenpackung.Outer zone 6 significantly more oxide or carbide grains or Lamellae are located in the inner zone 7. The outer layer, for example approximately 10 grain layers, consists in particular of a dense grain or lamella pack.
Von besonderem Vorteil bei der erfindungsgemäßen Verschlei߬ schutzschicht ist es, daß diese relativ einfach nachgearbei¬ tet werden kann, wenn sich Verschleißerscheinungen zeigen, die über Toleranzgrenzen hinausgehen. Es genügt dann, einfach durch Plasmaspritzen eine neue Verschleißschutzschicht par- tiell aufzubringen und diese durch Schleifen, z.B. mit Diamant/Keramikschleifscheiben, auf Maß zu bringen. Der eigentliche Kupfermantel, wahlweise einstückig als Ring aus¬ geführt oder aus einzelnen, vorzugsweise stranggepreßten, Profilen zusammengesetzt, wird so geschont und weist eine hohe Lebensdauer auf.It is particularly advantageous in the case of the wear protection layer according to the invention that it can be reworked relatively easily if there are signs of wear that go beyond tolerance limits. It is then sufficient simply to partially apply a new wear protection layer by plasma spraying and to apply this by grinding, e.g. with diamond / ceramic grinding wheels, to size. The actual copper sheath, optionally in one piece as a ring or composed of individual, preferably extruded, profiles, is thus protected and has a long service life.
Das Plasmaspritzen, Nachsintern und Abschleifen kann sogar in Arbeitsposition der Gießwalzen erfolgen, hierfür ist ledig¬ lich eine Betriebspause notwendig, in der das Verschleiß- schutzschichtmaterial aufgespritzt, gesintert und anschlie¬ ßend durch ein bekanntes, transportables, Schleifgerät abge¬ schliffen wird. The plasma spraying, re-sintering and grinding can even take place in the working position of the casting rolls; all that is necessary for this is a break in operation in which the wear protection layer material is sprayed on, sintered and then ground off by a known, transportable, grinding device.

Claims

Patentansprüche claims
1. Gießeinrichtung für Metallbänder, mit zwei Gießwalzen, die zwischen sich einen Gießwalzspalt bilden und auf denen ein wassergekühlter Mantel aus Kupfer angeordnet ist, auf dem eine Abscheidung von zwischen die beiden Walzen gegebenen flüssigem Metall, vorzugsweise Stahl, in Form von Erstar¬ rungsschalen stattfindet, wobei die Erstarrungsschalen in dem Gießwalzspalt unter Verdichtung zu einem Band geformt werden, dadurch gekennz e i chnet , daß der gekühlte Kupfermantel (1) auf den Gießwalzen eine äußere Verschleißschutzschicht aufweist, die aus verschlei߬ festen Körnern oder Lamellen (5) in einem Bindemittel (4), insbesondere aus Metall, z.B. einer Nickel-Kobalt-Legierung, besteht.1. Casting device for metal strips, with two casting rolls, which form a casting roll gap between them and on which a water-cooled jacket made of copper is arranged, on which a deposition of liquid metal, preferably steel, between the two rolls takes place in the form of solidification trays , wherein the solidification shells are formed into a band in the casting roll gap with compression, characterized in that the cooled copper jacket (1) has an outer wear protection layer on the casting rolls, which layer consists of wear-resistant grains or lamellae (5) in a binder ( 4), in particular made of metal, for example a nickel-cobalt alloy.
2. Gießeinrichtung nach Anspruch 1, d a d u r c h g e k enn z e i c hn e t , daß die Verschleißschutzschicht durch eine Verbindungsschicht (3), z.B. aus Nickel, mit dem gekühlten Kupfermantel (1) auf den Gießwalzen verbunden ist.2. Casting device according to claim 1, d a d u r c h g e k enn z e i c hn e t that the wear protection layer by a connecting layer (3), e.g. made of nickel, is connected to the cooled copper jacket (1) on the casting rolls.
3. Gießeinrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c hn e t , daß die verschleißfesten Körner (5) aus Metalloxiden, wie Aluminiumoxid, Zirkonoxid o.a. bestehen.3. Casting device according to claim 1 or 2, so that the wear-resistant grains (5) made of metal oxides such as aluminum oxide, zirconium oxide or the like. consist.
4. Gießeinrichtung nach Anspruch 1,2 oder 3, d a du r c h g e k en n z e i c hn e t , daß die verschleißfesten Metalloxidkörner (5) in der Ver¬ schleißschutzschicht zumindest teilweise durch Carbidkörner oder Lamellen ersetzt sind, z.B. durch Titancarbid, Wolfram- carbic oder Siliziumcarbid. 4. Pouring device according to claim 1, 2 or 3, since you rchgek en nzeic hn et that the wear-resistant metal oxide grains (5) in the wear protection layer are at least partially replaced by carbide grains or lamellae, for example by titanium carbide, tungsten carbic or silicon carbide.
5. Gießeinrichtung nach Anspruch 1,2,3 oder 4, dadurch gekenn z e i chnet , daß die Korngröße der verschleißfesten Körner oder Lamellen (5) kleiner als 30 Mikrometer (um), insbesondere kleiner als 10 um ist.5. Pouring device according to claim 1, 2, 3 or 4, characterized in that the grain size of the wear-resistant grains or lamellae (5) is less than 30 micrometers (µm), in particular less than 10 µm.
6. Gießeinrichtung nach Anspruch 1,2,3,4 oder 5, dadurch gekennz ei chnet , daß die Verschleißschutzschicht zwischen ca. 0,2 und 2 mm dick ist, vorzugsweise ca. 0,2 bis 1 mm.6. Pouring device according to claim 1, 2, 3, 4 or 5, characterized in that the wear protection layer is between approximately 0.2 and 2 mm thick, preferably approximately 0.2 to 1 mm.
7. Gießeinrichtung nach Anspruch 1,2,3,4,5 oder 6, dadurch gekennze i chne t , daß die Verschleißschutzschicht durch einen, ggf. mehrfach wiederholten, zu einer mehrschichtigen Ausbildung führenden, Plasmaspritzvorgang aufgebracht ist.7. Pouring device according to claim 1, 2, 3, 4, 5 or 6, characterized in that the wear protection layer is applied by a plasma spraying process, possibly repeated several times, leading to a multi-layer formation.
8. Gießeinrichtung nach Anspruch 1,2,3,4,5 oder 6, da durch gekennz e i chne t , daß das Bindemittel (4) und die verschleißfesten Körner oder8. Pouring device according to claim 1, 2, 3, 4, 5 or 6, characterized by the fact that the binder (4) and the wear-resistant grains or
Lamellen (5) durch einen Verteilvorgang mit der Möglichkeit ein Oberflächenmuster zu erzeugen, z.B. durch Siebdruck oder durch Aufsieben durch Schablonen, aufgebracht und anschließend gesintert werden.Slats (5) through a distribution process with the possibility of creating a surface pattern, e.g. by screen printing or by sifting through stencils, and then sintered.
9. Gießeinrichtung nach einem oder mehreren der vorhergehen¬ den Ansprüche, dadurch gekennz e i chne t , daß die Konzentration der verschleißfesten Körner oder Lamel- len (5) im Verbundmaterial zur Kontaktfläche des Stahls hin zunimmt und insbesondere außen eine dichte Packung erreicht.9. Casting device according to one or more of the preceding claims, characterized in that the concentration of the wear-resistant grains or lamellae (5) in the composite material increases towards the contact surface of the steel and in particular achieves a tight packing on the outside.
10. Gießeinrichtung nach einem oder mehreren der vorherge¬ henden Ansprüche, dadurch gekenn ze i chnet , daß die Verschleißschutzschicht nach dem Aufbringen, sei es durch Plasmaspritzen oder durch Sieodruck, Aufsieben o.ä. durch einen Laser eindringtiefengesteuert gesintert wird. 10. Pouring device according to one or more of the preceding claims, characterized in that that the wear protection layer after application, be it by plasma spraying or by screen printing, sieving or the like. is sintered by penetration depth controlled by a laser.
PCT/DE1995/000930 1994-07-18 1995-07-13 Wear-protection layer for casting rollers WO1996002340A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59504502T DE59504502D1 (en) 1994-07-18 1995-07-13 CASTING ROLLER WEAR PROTECTIVE LAYER
EP95925690A EP0773844B1 (en) 1994-07-18 1995-07-13 Wear-protection layer for casting rollers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4425333.8 1994-07-18
DE4425333 1994-07-18

Publications (1)

Publication Number Publication Date
WO1996002340A1 true WO1996002340A1 (en) 1996-02-01

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ID=6523461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000930 WO1996002340A1 (en) 1994-07-18 1995-07-13 Wear-protection layer for casting rollers

Country Status (5)

Country Link
EP (1) EP0773844B1 (en)
KR (1) KR100370804B1 (en)
AT (1) ATE174237T1 (en)
DE (1) DE59504502D1 (en)
WO (1) WO1996002340A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016335A1 (en) * 1996-10-17 1998-04-23 Gränges Ab Method for strip casting aluminium
WO1998052706A1 (en) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Casting cylinder for thin-band continuous casting installation
WO2002053313A1 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Jacket ring for a casting roll of a strip casting machine
WO2002053312A1 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Method for operating a strip casting machine and jacket ring for a casting roll used to carry out said method
WO2002053311A2 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Jacket ring for a casting roll of a strip casting machine, and method for using one such casting roll
EP1468761A1 (en) * 2003-04-17 2004-10-20 KM Europa Metal Aktiengesellschaft Casting roll for casting of aluminium or aluminium alloys strips
KR100690471B1 (en) * 2000-07-05 2007-03-09 스페델 파르마 아게 Process for the preparation of substituted octanoyl amides
WO2007101512A1 (en) * 2006-03-09 2007-09-13 Sms Demag Ag Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll
CN107964838A (en) * 2017-12-30 2018-04-27 盐城八达易利科技开发有限公司 A kind of wear-resisting ballast-cleaning machine is cut clearly arm

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023396B4 (en) * 2006-05-17 2009-04-16 Man B&W Diesel A/S Wear protection coating and use and method for producing such
DE102008017432A1 (en) * 2008-04-03 2009-10-08 Kme Germany Ag & Co. Kg mold

Citations (5)

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EP0305986A2 (en) * 1987-08-31 1989-03-08 Mitsubishi Materials Corporation Mold Member and Rapidly Solidifying Water Cooled Rotary Roll Member
EP0320572A2 (en) * 1987-12-17 1989-06-21 Kawasaki Steel Corporation Cooling roll for producing quenched thin metal tape
EP0470503A1 (en) * 1990-08-08 1992-02-12 Deere & Company Method of fabricating of metallic products with wear resistant surface
DE4130202A1 (en) * 1990-09-14 1992-03-19 Usinor Sacilor Continuous casting roller - is a ring bonded to a core by hard solder to reduce mfg. costs
EP0477121A1 (en) * 1990-09-14 1992-03-25 Usinor Sacilor Sleeve for casting cylinders for continuous casting of metal, in particular of steel, on or between the cylinders

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305986A2 (en) * 1987-08-31 1989-03-08 Mitsubishi Materials Corporation Mold Member and Rapidly Solidifying Water Cooled Rotary Roll Member
EP0320572A2 (en) * 1987-12-17 1989-06-21 Kawasaki Steel Corporation Cooling roll for producing quenched thin metal tape
EP0470503A1 (en) * 1990-08-08 1992-02-12 Deere & Company Method of fabricating of metallic products with wear resistant surface
DE4130202A1 (en) * 1990-09-14 1992-03-19 Usinor Sacilor Continuous casting roller - is a ring bonded to a core by hard solder to reduce mfg. costs
EP0477121A1 (en) * 1990-09-14 1992-03-25 Usinor Sacilor Sleeve for casting cylinders for continuous casting of metal, in particular of steel, on or between the cylinders

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016335A1 (en) * 1996-10-17 1998-04-23 Gränges Ab Method for strip casting aluminium
WO1998052706A1 (en) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Casting cylinder for thin-band continuous casting installation
KR100690471B1 (en) * 2000-07-05 2007-03-09 스페델 파르마 아게 Process for the preparation of substituted octanoyl amides
WO2002053313A1 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Jacket ring for a casting roll of a strip casting machine
WO2002053312A1 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Method for operating a strip casting machine and jacket ring for a casting roll used to carry out said method
WO2002053311A2 (en) * 2000-12-30 2002-07-11 Sms Demag Aktiengesellschaft Jacket ring for a casting roll of a strip casting machine, and method for using one such casting roll
WO2002053311A3 (en) * 2000-12-30 2002-10-24 Sms Demag Ag Jacket ring for a casting roll of a strip casting machine, and method for using one such casting roll
US7108047B2 (en) 2000-12-30 2006-09-19 Sms Demag Ag Method for operating a strip casting machine and jacket ring for a casting roll used to carry out said method
EP1468761A1 (en) * 2003-04-17 2004-10-20 KM Europa Metal Aktiengesellschaft Casting roll for casting of aluminium or aluminium alloys strips
WO2007101512A1 (en) * 2006-03-09 2007-09-13 Sms Demag Ag Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll
DE102006011384B4 (en) 2006-03-09 2019-09-05 Sms Group Gmbh Roll for metalworking, in particular continuous casting roll
CN107964838A (en) * 2017-12-30 2018-04-27 盐城八达易利科技开发有限公司 A kind of wear-resisting ballast-cleaning machine is cut clearly arm

Also Published As

Publication number Publication date
KR970704532A (en) 1997-09-06
EP0773844A1 (en) 1997-05-21
KR100370804B1 (en) 2003-03-15
DE59504502D1 (en) 1999-01-21
ATE174237T1 (en) 1998-12-15
EP0773844B1 (en) 1998-12-09

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