EP0924010A1 - Mould and method of production of a mould - Google Patents

Mould and method of production of a mould Download PDF

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Publication number
EP0924010A1
EP0924010A1 EP98123408A EP98123408A EP0924010A1 EP 0924010 A1 EP0924010 A1 EP 0924010A1 EP 98123408 A EP98123408 A EP 98123408A EP 98123408 A EP98123408 A EP 98123408A EP 0924010 A1 EP0924010 A1 EP 0924010A1
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EP
European Patent Office
Prior art keywords
mold
layer
chrome
wear protection
mold body
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Granted
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EP98123408A
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German (de)
French (fr)
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EP0924010B1 (en
Inventor
Hans-Jürgen Hemschemeier
Dirk Dr. Rode
Ralf Rethmann
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KM Europa Metal AG
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KM Europa Metal AG
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    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/059—Mould materials or platings
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/004—Copper alloys
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0408—Moulds for casting thin slabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component

Abstract

The mold structure is solid-solution annealed, the wear resistant layer is produced on the mold structure and the mold structure is hardened. The hardness of the wear resistant layer (7) of the mold decreases with the distance from the layer surface (8) towards the mold structure (5). The method for producing a mold with a mold structure (1) consisting of a hardenable copper alloy, and an interior wear resistant layer (7) consisting of chromium involves the following steps: a) the mold structure is solid-solution annealed; b) the wear resistant layer is produced on the mold structure; c) the mold structure is hardened. The hardness of the wear resistant layer (7) of the mold decreases with the distance from the layer surface (8) towards the mold structure (5).

Description

Die Erfindung betrifft einerseits ein Verfahren zur Herstellung eines Kokillenkörpers gemäß den Merkmalen im Oberbegriff des Anspruchs 1 und andererseits einen Kokillenkörper gemäß den Merkmalen im Oberbegriff des Anspruchs 5.On the one hand, the invention relates to a method for producing a mold body according to the features in the preamble of claim 1 and on the other hand a mold body according to the features in the preamble of claim 5.

Die Kokille ist eines der wichtigsten Bauteile einer Stranggießanlage. In ihr beginnt die Erstarrung der Schmelze. Der prinzipielle Aufbau besteht in der Regel aus einer äußeren Stahlkonstruktion und dem eigentlichen formgebenden Teil der Kokille, dem Kokillenkörper. Der Kokillenkörper besteht heute fast ausschließlich aus Kupfer oder einer Kupferlegierung. Der Stahlmantel hat die Aufgabe, den Kokillenkörper zu positionieren und den zur Kühlung erforderlichen Wasserkreislauf sicherzustellen.The mold is one of the most important components of a continuous caster. It begins in her the solidification of the melt. The basic structure usually consists of one outer steel structure and the actual shaping part of the mold, the mold body. The mold body is now almost exclusively made of copper or a copper alloy. The steel jacket has the task of closing the mold body position and ensure the water cycle required for cooling.

Die Verschleißfestigkeit von Kupferlegierungen ist relativ gering. Insbesondere am Fuß des Kokillenkörpers besteht die Gefahr einer erhöhten Reibung zwischen Stahlstrang und der Wand des Kokillenkörpers infolge von Differenzen zwischen Kokillenkörpergeometrie und Schrumpfverhalten des Stahls oder infolge einer unzureichenden Führung des Strangs unterhalb der Kokille. Hierdurch kann ein erheblicher Abrieb mit einer entsprechenden Formänderung des Kokillenkörpers auftreten.The wear resistance of copper alloys is relatively low. In particular on There is a risk of increased friction between the steel strand at the base of the mold body and the wall of the mold body due to differences between the mold body geometry and shrinkage behavior of the steel or as a result of insufficient guidance of the strand below the mold. This can be a significant Abrasion with a corresponding change in shape of the mold body occur.

Aus Gründen des Verschleißschutzes wird der Kokillenkörper daher mit einer inneren Beschichtung aus einem verschleißfesten Werkstoff, wie Nickel oder Chrom, versehen. Ein solcher Kokillenkörper mit Verschleißschutzschicht geht beispielsweise aus der DE 31 42 196 C2 hervor. Hierdurch kann eine Verbesserung des Reibverhaltens und damit eine Erhöhung der Standzeit des Kokillenkörpers erreicht werden. For reasons of wear protection, the mold body is therefore covered with an inner one Coating made of a wear-resistant material, such as nickel or chrome, Mistake. Such a mold body with a wear protection layer goes for example from DE 31 42 196 C2. This can improve the Friction behavior and thus an increase in the service life of the mold body become.

Eine Chrombeschichtung zeichnet sich in diesem Zusammenhang durch ihre gegenüber Nickel größere Härte und den damit verbundenen besseren Verschleißschutz aus. Eine galvanische Beschichtung der Innenfläche mit Hartchrom bietet daher einen wirksamen Verschleißschutz.In this context, a chrome coating is characterized by its opposite Nickel greater hardness and the associated better wear protection out. A galvanic coating of the inner surface with hard chrome therefore offers effective wear protection.

Durch die unterschiedlichen Wärmeausdehnungskoeffizienten der Werkstoffe von Kokillenkörper und der Verschleißschutzschicht kommt es jedoch zu erheblichen Spannungen in der Verschleißschutzschicht. Hierunter leidet die Haftfestigkeit und es besteht die Gefahr des Abplatzens oder der Ausbildung von Rissen.Due to the different coefficients of thermal expansion of the materials from The mold body and the wear protection layer, however, come to considerable Tensions in the wear protection layer. This affects the adhesive strength and there is a risk of cracking or cracking.

Der Erfindung liegt daher ausgehend vom Stand der Technik die Aufgabe zugrunde, ein Verfahren aufzuzeigen zur Herstellung von Kokillenkörpern aus einer aushärtbaren Kupferlegierung und einer inneren Verschleißschutzschicht aus Chrom mit einer verbesserten Haftung zwischen Kokillenkörper und Verschleißschutzschicht. Ferner zielt die Erfindung auf einen qualitativ verbesserten Kokillenkörper ab, welcher höhere Standzeiten ermöglicht.Based on the prior art, the invention is therefore based on the object to show a method for producing mold bodies from a curable Copper alloy and an inner wear protection layer made of chrome with an improved adhesion between the mold body and the wear protection layer. The invention further aims at a qualitatively improved mold body which longer service life.

Die Lösung des verfahrensmäßigen Teils dieser Aufgabe besteht nach der Erfindung in einem Kokillenkörper gemäß Anspruch 1.The procedural part of this task is solved according to the invention in a mold body according to claim 1.

Demgemäß wird der aus einer aushärtbaren Kupferlegierung bestehende Kokillenkörper nach dem Lösungsglühen mit einer inneren Beschichtung aus Chrom versehen und im Anschluß daran ausgehärtet.Accordingly, the mold body consisting of a hardenable copper alloy after the solution annealing with an inner coating of chrome and then cured.

Durch diese Wärmebehandlung wird die anfangs sehr hohe Härte der Verschleißschutzschicht verringert mit der Folge einer Duktilitätserhöhung. Die Unterschiede in den Werkstoffeigenschaften der Kupferlegierung des Kokillenkörpers und der Verschleißschutzschicht aus Chrom sind dann geringer, wodurch die Gefahr einer Schädigung der Chromschicht durch die unterschiedlichen Eigenschaften wesentlich verringert wird. This heat treatment makes the wear protection layer hard at first decreased with the consequence of an increase in ductility. The differences in the material properties of the copper alloy of the mold body and the wear protection layer Chromium are then less, reducing the risk of Damage to the chrome layer due to the different properties is reduced.

Bei dem Kokillenkörper kann es sich grundsätzlich um ein einteiliges Kokillenrohr oder auch um eine mehrteilige Gießform, beispielsweise eine Plattenkokille handeln.The mold body can basically be a one-piece mold tube or a multi-part mold, for example a plate mold.

Nach den Merkmalen des Anspruchs 2 wird die Aushärtung unter Schutzgas in einer reduzierenden Atmosphäre vorgenommen. Hierbei wird der Kokillenkörper auf seine Endfestigkeit gebracht.According to the features of claim 2, the curing under protective gas in one reducing atmosphere. Here, the mold body is on its Brought ultimate strength.

Die Aushärtetemperatur wird auf die angestrebte Härte der Verschleißschutzschicht abgestimmt, um ein zu starkes Erweichen der Chromschicht zu vermeiden. Vorzugsweise wird die Aushärtung bei einer Temperatur zwischen 400°C und 550 °C durchgeführt (Anspruch 3). Sehr gute Ergebnisse wurden in praktischen Versuchen mit einer Temperatur von 460 °C unter Schutzgas erzielt, wobei die Dauer der Wärmebehandlung 10 Stunden betrug. Hierbei wird eine Härte der Verschleißschutzschicht von 650 HV bis 700 HV (Vickers-Härte) angestrebt. Die Verschleißschutzschicht besitzt dann eine ausreichend hohe Härte, jedoch aufgrund der höheren Duktilität eine günstigere Haftfestigkeit und eine geringere Neigung zur Rißbildung.The curing temperature is based on the desired hardness of the wear protection layer matched to avoid excessive softening of the chrome layer. Preferably the curing is carried out at a temperature between 400 ° C and 550 ° C (Claim 3). Very good results were obtained in practical tests with achieved a temperature of 460 ° C under protective gas, the duration of the heat treatment Was 10 hours. Here, a hardness of the wear protection layer from 650 HV to 700 HV (Vickers hardness). The wear protection layer then has a sufficiently high hardness, but due to the higher Ductility a more favorable adhesive strength and a lower tendency to crack.

Eine vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens ist in der Maßnahme des Anspruchs 4 zu sehen. Danach wird die Verschleißschutzschicht zweilagig ausgebildet, indem nach dem Aushärten die innere Oberfläche zusätzlich hartverchromt wird. Die Chromschicht wird vorzugsweise elektrolytisch abgeschieden.An advantageous development of the method according to the invention is in the measure of claim 4 to see. Then the wear protection layer becomes two-layer formed by additionally hardening the inner surface is hard chrome plated. The chrome layer is preferably deposited electrolytically.

Auf diese Weise wird eine Mehrschichtverchromung mit einem graduellen Übergang der Härten erreicht. Die Gefahr von Rißbildungen und Abplatzungen wird hierdurch deutlich verringert. Ferner ist es möglich, durch diese Maßnahme größere Schichtdicken der Verschleißschutzschicht aus Chrom zu realisieren. In this way, multi-layer chrome plating with a gradual transition of hardness reached. This increases the risk of cracks and flaking significantly reduced. This measure also makes it possible to use thicker layers the wear protection layer made of chrome.

Ein erfindungsgemäßer Kokillenkörper ist gegenständlich in den Merkmalen des Anspruchs 5 charakterisiert. Kernpunkt bildet die Maßnahme, daß die Härte der Verschleißschutzschicht von der strangseitigen Oberfläche in Richtung zum Kokillenkörper abnimmt.A mold body according to the invention can be seen in the features of the claim 5 characterized. The key point is the measure that the hardness of the wear protection layer from the surface on the strand side towards the mold body decreases.

Hierdurch können die aus den unterschiedlichen Werkstoffeigenschaften am Schichtübergang von Kokillenkörper und Verschleißschutzschicht resultierenden Materialbelstungen verringert werden.As a result, the different material properties Layer transition from the mold body and wear protection layer resulting Material stresses can be reduced.

Die Härte kann ausgehend von der Kupferlegierung stufenweise erhöht werden. Hierbei findet eine Steigerung statt von der weichen Kupferlegierung des Kokillenkörpers über die rohrseitige Chromschicht mit höherer Härte bis hin zur höchsten Härte der strangseitigen Chromschicht (Anspruch 6).The hardness can be gradually increased based on the copper alloy. Here there is an increase in the soft copper alloy of the mold body over the pipe-side chrome layer with higher hardness up to the highest Hardness of the chrome layer on the strand side (claim 6).

Nach den Merkmalen des Anspruchs 7 besitzt die rohrseitige Chromschicht eine Härte zwischen 500 HV und 850 HV, wohingegen die strangseitige Chromschicht eine Härte zwischen 850 HV und 1050 HV aufweist.According to the features of claim 7, the pipe-side chrome layer has one Hardness between 500 HV and 850 HV, whereas the chrome layer on the strand side has a hardness between 850 HV and 1050 HV.

Die Schichtdicken von rohrseitiger und strangseitiger Chromschicht liegen vorzugsweise jeweils zwischen 100 µm und 150 µm, wobei eine Gesamtschichtdicke von ca. 250 µm als für die Praxis besonders günstig angesehen wird.The layer thicknesses of the tube-side and strand-side chrome layer are preferably each between 100 µm and 150 µm, with a total layer thickness of approx. 250 µm is considered to be particularly favorable in practice.

Die Verschleißschutzschicht kann eine in Gießrichtung konstante Dicke aufweisen. Grundsätzlich ist es aber auch möglich, daß die Dicke der Verschleißschutzschicht in Gießrichtung zunimmt. Hierdurch wird eine hohe Wandtemperatur im Gießspiegelbereich gewährleistet bei gleichzeitiger Zunahme des Verschleißschutzes in Gießrichtung. Auf diese Weise kann eine effektive Abstimmung der für die Erstarrung zur Verfügung stehenden Kühlstrecke der Kokille hinsichtlich des Schrumpfverhaltens des Stranges erfolgen. Die Veränderung der Beschichtungsdicke kann linear oder stufenförmig erfolgen. The wear protection layer can have a constant thickness in the casting direction. Basically, it is also possible that the thickness of the wear protection layer increases in the casting direction. This results in a high wall temperature in the area of the mold level guaranteed while increasing wear protection in Pouring direction. In this way, effective coordination of the solidification available cooling section of the mold with regard to the shrinkage behavior of the strand. The change in coating thickness can be linear or stepwise.

Die Erfindung ist nachfolgend anhand eines in der Figur 1 dargestellten Ausführungsbeispiels beschrieben.The invention is based on an embodiment shown in Figure 1 described.

Die Figur 1 veranschaulicht ein Kokillenrohr 1 zum Stranggießen von Stahl. Das Kokillenrohr 1 besitzt einen Formhohlraum 2, dessen Querschnitt am eingießseitigen Stirnende 3 größer als am strangaustrittsseitigen Fußende 4 bemessen ist.FIG. 1 illustrates a mold tube 1 for the continuous casting of steel. The Mold tube 1 has a mold cavity 2, the cross section of which is on the pouring side Front end 3 is larger than dimensioned at the end 4 of the strand exit end.

Der Grundkörper 5 des Kokillenrohrs 1 besteht aus einer Kupferlegierung vorzugsweise auf Kupfer/Chrom/Zirkon-Basis (CuCrZr).The base body 5 of the mold tube 1 is preferably made of a copper alloy based on copper / chrome / zircon (CuCrZr).

Auf der Innenseite 6 ist das Kokillenrohr 1 mit einer Verschleißschutzschicht 7 aus Chrom versehen. Die Verschleißschutzschicht 7 ist zweilagig ausgebildet, wobei die Härte der Verschleißschutzschicht 7 von der strangseitigen Oberfläche 8 in Richtung zum Kokillenrohr 1 bzw. der Innenseite 6 des Kokillenrohrs 1 abnimmt.On the inside 6, the mold tube 1 is made with a wear protection layer 7 Chrome. The wear protection layer 7 is formed in two layers, the Hardness of the wear protection layer 7 from the surface 8 on the strand side in the direction to the mold tube 1 or the inside 6 of the mold tube 1 decreases.

Hierzu ist die Verschleißschutzschicht 7 aus zwei einzelnen Verschleißschutzschichten, den Chromschichten 9 und 10 mit unterschiedlicher Härte aufgebaut. Die rohrseitige Chromschicht 9 besitzt vorzugsweise eine Härte von 650 HV. Die strangseitige Chromschicht 10 ist demgegenüber mit einer Härte von 1000 bis 1050 HV härter.For this purpose, the wear protection layer 7 is made up of two individual wear protection layers, the chrome layers 9 and 10 built up with different hardness. The Pipe-side chrome layer 9 preferably has a hardness of 650 HV. The in contrast, the chromium layer 10 on the strand side has a hardness of 1000 to 1050 HV harder.

Zur Erzeugung der ersten Chromschicht 9 ist das Kokillenrohr 1 bzw. dessen Grundkörper 5 im lösungsgeglühten Zustand verchromt und anschließend in einer Wärmebehandlung ausgehärtet worden. So erhält der Kokillenkörper 1 seine Endfestigkeit. Nach der Auslagerung weist die Chromschicht 9 dann eine Härte von 650 HV auf. Zur Erhöhung des Verschleißschutzes wird in einem weiteren Beschichtungsvorgang die zweite Chromschicht 10 aufgetragen, welche eine Härte von 1050 HV besitzt. To produce the first chrome layer 9, the mold tube 1 or its Base body 5 chrome-plated in the solution-annealed state and then in one Heat treatment has been cured. The mold body 1 thus obtains its ultimate strength. After aging, the chrome layer 9 then has a hardness of 650 HV on. To increase wear protection, another coating process is used the second chrome layer 10 is applied, which has a hardness of 1050 HV.

Die Verschleißschutzschicht 7 ist insgesamt 250 µm dick, wobei die Schichtdicke der Chromschicht 9 100 µm und die Schichtdicke der Chromschicht 10 150 µm beträgt.The wear protection layer 7 is a total of 250 microns thick, the layer thickness of the Chrome layer 9 is 100 µm and the layer thickness of the chrome layer 10 is 150 µm.

Der Vorteil der zweilagigen Verschleißschutzschicht 7 liegt in einer verringerten Differenz zwischen Härte und Duktilität am Übergang vom Grundkörper 5 zur Chromschicht 9 unter Gewährleistung einer hohen Härte an der strangseitigen Oberfläche 8 durch die Chromschicht 10. The advantage of the two-layer wear protection layer 7 is that it is reduced Difference between hardness and ductility at the transition from the base body 5 to Chrome layer 9 ensuring high hardness on the strand side Surface 8 through the chrome layer 10.

BezugszeichenaufstellungList of reference symbols

1 -1 -
KokillenrohrMold tube
2 -2 -
FormhohlraumMold cavity
3 -3 -
Stirnende v. 1Forehead 1
4 -4 -
Fußende v. 1Foot end of 1
5 -5 -
Grundkörper v. 1Basic body v. 1
6 -6 -
Innenseiteinside
7 -7 -
VerschleißschutzschichtWear protection layer
8 -8th -
strangseitige Oberflächestrand-side surface
9 -9 -
rohrseitige Chromschichttube-side chrome layer
10 -10 -
strangseitige Chromschichtstrand-side chrome layer

Claims (7)

Verfahren zur Herstellung des aus einer aushärtbaren Kupferlegierung bestehenden formgebenden Kokillenkörpers einer Kokille für eine Stranggießanlage, bei welchem der Kokillenkörper mit einer inneren Verschleißschutzschicht aus Chrom versehen wird, dadurch gekennzeichnet, daß der Kokillenkörper lösungsgeglüht, anschließend die Verschleißschutzschicht auf den Kokillenkörper aufgebracht und danach der Kokillenkörper ausgehärtet wird.A process for producing the mold mold body of a mold made of a hardenable copper alloy for a continuous casting installation, in which the mold body is provided with an inner wear protection layer made of chrome, characterized in that the mold body is solution-annealed, the wear protection layer is then applied to the mold body and then the mold body is hardened becomes. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Aushärtung in einer Schutzgasatmosphäre vorgenommen wird.A method according to claim 1, characterized in that the curing is carried out in a protective gas atmosphere. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Aushärtung bei einer Temperatur zwischen 400 °C und 550 °C durchgeführt wird.A method according to claim 1 or 2, characterized in that the curing is carried out at a temperature between 400 ° C and 550 ° C. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine zweilagige Verschleißschutzschicht (7) ausgebildet wird, indem nach dem Aushärten die innere Oberfläche (8) zusätzlich hartverchromt wird.Method according to one of claims 1 to 3, characterized in that a two-layer wear protection layer (7) is formed by additionally hard-chroming the inner surface (8) after hardening. Kokillenkörper aus einer aushärtbaren Kupferlegierung für die Kokille einer Stranggießanlage, welcher eine innere Verschleißschutzschicht (7) aus Chrom aufweist, dadurch gekennzeichnet, daß die Härte der Verschleißschutzschicht (7) von der strangseitigen Oberfläche (8) in Richtung zum Kokillenkörper (1) abnimmt. Mold body made of a hardenable copper alloy for the mold of a continuous casting plant, which has an inner wear protection layer (7) made of chrome, characterized in that the hardness of the wear protection layer (7) decreases from the strand-side surface (8) towards the mold body (1). Kokillenkörper nach Anspruch 5, dadurch gekennzeichnet, daß die Verschleißschutzschicht (7) aus zwei Chromschichten (9, 10) unterschiedlicher Härte besteht, wobei die strangseitige Chromschicht (10) härter als die rohrseitige Chromschicht (9) ist.Chill mold according to Claim 5, characterized in that the wear protection layer (7) consists of two chrome layers (9, 10) of different hardness, the chrome layer (10) on the strand side being harder than the chrome layer (9) on the tube side. Kokillenkörper nach Anspruch 6, dadurch gekennzeichnet, daß die rohrseitige Chromschicht (9) eine Härte zwischen 500 HV und 850 HV und die strangseitige Chromschicht (10) eine Härte zwischen 850 HV und 1050 HV besitzt.Chill mold according to claim 6, characterized in that the tube-side chrome layer (9) has a hardness between 500 HV and 850 HV and the strand-side chrome layer (10) has a hardness between 850 HV and 1050 HV.
EP98123408A 1997-12-17 1998-12-09 Mould and method of production of a mould Expired - Lifetime EP0924010B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19756164A DE19756164A1 (en) 1997-12-17 1997-12-17 Process for producing a mold body and mold body
DE19756164 1997-12-17

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EP0924010A1 true EP0924010A1 (en) 1999-06-23
EP0924010B1 EP0924010B1 (en) 2002-09-04

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US (2) US6206987B1 (en)
EP (1) EP0924010B1 (en)
JP (1) JPH11244997A (en)
KR (1) KR19990062793A (en)
CN (1) CN1095708C (en)
AR (1) AR009930A1 (en)
AT (1) ATE223267T1 (en)
AU (1) AU744465B2 (en)
BR (1) BR9805419A (en)
CA (1) CA2256207C (en)
CZ (1) CZ415698A3 (en)
DE (2) DE19756164A1 (en)
DK (1) DK0924010T3 (en)
ES (1) ES2180114T3 (en)
PL (1) PL330305A1 (en)
PT (1) PT924010E (en)
RU (1) RU2211111C2 (en)
TW (1) TW396072B (en)
ZA (1) ZA9811283B (en)

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AT500814A1 (en) * 2004-10-13 2006-04-15 Voest Alpine Ind Anlagen METHOD FOR INCREASING THE LIFE OF THE WIDE-SIDED WALLS OF AN ADJUSTING COCKILLE
WO2008049081A1 (en) * 2006-10-18 2008-04-24 Inframat Corporation Casting molds coated for surface enhancement and methods of making them
DE102010012309A1 (en) 2010-03-23 2011-09-29 Sms Siemag Ag Mold element and method for its coating

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US20050106122A1 (en) * 2002-02-25 2005-05-19 Sveinbjorn Gizurarson Absorption enhancing agent
DE10227034A1 (en) * 2002-06-17 2003-12-24 Km Europa Metal Ag Copper casting mold
JP4751260B2 (en) * 2006-07-13 2011-08-17 新日本製鐵株式会社 Continuous casting mold and manufacturing method thereof
DE102007002806A1 (en) 2007-01-18 2008-07-24 Sms Demag Ag Mold with coating

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JPS577361A (en) * 1980-06-14 1982-01-14 Mishima Kosan Co Ltd Production of mold for continuous casting
JPS62270249A (en) * 1986-05-17 1987-11-24 Fujiki Kosan Kk Production of mold for continuous casting
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT500814A1 (en) * 2004-10-13 2006-04-15 Voest Alpine Ind Anlagen METHOD FOR INCREASING THE LIFE OF THE WIDE-SIDED WALLS OF AN ADJUSTING COCKILLE
AT500814B1 (en) * 2004-10-13 2006-11-15 Voest Alpine Ind Anlagen METHOD FOR INCREASING THE LIFE OF THE WIDE-SIDED WALLS OF AN ADJUSTING COCKILLE
WO2008049081A1 (en) * 2006-10-18 2008-04-24 Inframat Corporation Casting molds coated for surface enhancement and methods of making them
DE102010012309A1 (en) 2010-03-23 2011-09-29 Sms Siemag Ag Mold element and method for its coating

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AU744465B2 (en) 2002-02-21
DE19756164A1 (en) 1999-06-24
KR19990062793A (en) 1999-07-26
CA2256207C (en) 2005-03-29
ES2180114T3 (en) 2003-02-01
CZ415698A3 (en) 1999-10-13
CA2256207A1 (en) 1999-06-17
US6383663B2 (en) 2002-05-07
TW396072B (en) 2000-07-01
ZA9811283B (en) 1999-06-14
ATE223267T1 (en) 2002-09-15
JPH11244997A (en) 1999-09-14
PL330305A1 (en) 1999-06-21
US6206987B1 (en) 2001-03-27
PT924010E (en) 2003-01-31
EP0924010B1 (en) 2002-09-04
RU2211111C2 (en) 2003-08-27
US20010006738A1 (en) 2001-07-05
CN1095708C (en) 2002-12-11
BR9805419A (en) 1999-11-09
AR009930A1 (en) 2000-05-03
DE59805400D1 (en) 2002-10-10
DK0924010T3 (en) 2003-01-06
CN1220924A (en) 1999-06-30

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