EP1742751B1 - Cooled continuous casting mold - Google Patents

Cooled continuous casting mold Download PDF

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Publication number
EP1742751B1
EP1742751B1 EP05735723A EP05735723A EP1742751B1 EP 1742751 B1 EP1742751 B1 EP 1742751B1 EP 05735723 A EP05735723 A EP 05735723A EP 05735723 A EP05735723 A EP 05735723A EP 1742751 B1 EP1742751 B1 EP 1742751B1
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EP
European Patent Office
Prior art keywords
casting
cooling
continuous casting
channels
format
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EP05735723A
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German (de)
French (fr)
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EP1742751A2 (en
Inventor
Hans Streubel
Jim Sears
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SMS Siemag AG
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SMS Siemag 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
    • B22D11/055—Cooling the moulds

Definitions

  • the invention relates to a cooled continuous casting mold for casting metal, in particular steel, with a casting format formed from two opposite broad sides and narrow sides.
  • the broad sides have a cooling range designed for the maximum casting width with a plurality of cooling channels with inlet and outlet channels extending in the casting direction and connected to a coolant circuit.
  • the narrow sides are adjustable to set the desired casting width.
  • the chill cooling of the broad sides is designed for the maximum casting width.
  • the intensive mold cooling is also effective outside the adjustable narrow side. The cooling area is thus wider than the current casting width. Consequently, it is also intensively cooled where there is no heat supply of the strand.
  • the temperature drop in the immediate vicinity of the narrow sides can be up to 200 ° C and more.
  • the Japanese publication JP 09 04 7848 discloses a Bandstrangg automatkokille whose narrow sides are movable together with shut-off elements for cooling channels.
  • the invention has for its object to provide a known from the prior art continuous casting mold for slab formats, which allows the production of slabs with different widths, with a more uniform working temperature for the broadsides is adjustable and in particular a strong temperature drop near the narrow sides is reduced ,
  • the cooling channels and / or the inlet and / or outlet channels of the wide sides of the mold in the adjustment region of the narrow sides and also within the adjustment range of a cooling-width-dependent cooling area or a format width-dependent cooling water width G cashformates are at least partially or completely shut off.
  • the shut-off can be done in the mold plate, the intermediate steel plate of a Kassettenkokille and / or the water box.
  • the shut-off can be done in the supply or in the return of the mold.
  • shut-off should be possible between an area of the narrow side plates up to the maximum cooling width.
  • a barrier is also possible in a narrow side area, which can go beyond the actual narrow side in the casting format, up to the maximum cooling width.
  • the temperature of the working side of the broad sides in the region of the narrow side is made uniform. Due to the more uniform temperature distribution on the working side of the broad sides in the bathroom mirror area, the melting of the casting powder and thus the surface quality of the cast product is improved.
  • the cooling channels extending at least over the adjustment range of the narrow sides can be completely or partially shut off. Calculations have shown that in addition, the cooling channels, which are up to 100 mm per side in the narrow-side area in the casting format extend, be shut off to even out the temperature curves of the broadsides.
  • a uniform temperature distribution on the working side of the broad sides is achieved when the degree of shut-off of the coolant liquid decreases towards the middle of the mold or the shut-off of the cooling channels towards the middle of the mold becomes smaller. This can be achieved in that corresponding shut-off elements in the narrow-side region and / or in the casting format taper towards the center of the mold.
  • the coolant is water.
  • the most uniform temperature distribution is achieved when the water velocity in the area of the partially shut-off cooling channels is at most 25 m / s and at least 0.5 m / s.
  • the water speed of the cooling channels in the cooling area with unobstructed cooling channels is a minimum speed of 0.5 m / s. This is achieved by appropriately designed shut-off elements.
  • shut-off of the individual cooling channels is achieved by shut-off elements arranged on the narrow-side support. These are preferably designed as bolts that control the inlet or the outlet of the individual cooling channels.
  • the shut-off elements are movable with the respective narrow side or the narrow side carrier.
  • the desired casting format or the casting width is set via the narrow sides. In this position, the cooling channels of the broad sides near the narrow sides are at least partially shut off. In this way, it does not lead to an undesirable overcooling of these areas of broadsides, which has an advantageous effect on the melting behavior of the casting powder and thus the surface quality of the extruded product.
  • the Fig. 1 shows a plan view of a continuous casting mold 1, which consists of two opposite broad sides 2, 3 and narrow sides 4, 5, which form between them the casting format for the respective slab.
  • the narrow sides 4, 5 are adjustable between the broad sides 2, 3 in order to set a predetermined or desired casting format GF geg or a casting width.
  • the cooling area 6 of the broad sides 2, 3 is designed according to the maximum casting width.
  • the broad sides 2, 3 have vertical cooling channels 7 in the form of holes, which are each connected by means of an inlet 8 and a drain with a cooling water circuit.
  • the cooling channels 7 and the inlets 8 are at least partially shut off in the area 9.
  • cooling channels which extend in the casting format on the actual narrow side plate, still locked. It has been found that the partial shut-off of the cooling channels can extend to 100 mm per side in the casting format.
  • shut-off elements 10 which are fastened in the form of bolts to the carrier 11 of the narrow sides 4, 5 and are moved with the narrow side. They are tapered towards Kokillenmitte and exercise due to this tapered end 12 a decreasing towards Kokillenmitte barrier effect on the tributaries of the channels.
  • Fig. 2 shows a side view of a mold with the two narrow sides 4, 5 and the representation of the average working temperature profile below the bath level in a mold with (13a) and without (13b) cooling water width adjustment according to the invention.
  • the bathroom mirror is labeled 14.
  • the cooling region 6 extends over the entire Kokillenbreitseite, wherein the Kokillenkühlung may be reduced in adaptation to the shifted narrow sides or completely shut off. If the chill cooling is reduced in the area between the maximum casting format and the shifted narrow sides 4, 5, this has a positive effect on the equalization of the working side temperature below the bath level, the working side temperature is constant up to the narrow sides, while without the influence of the invention on the cooling to the narrow sides decreases sharply.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention relates to a cooled continuous casting mold (1) for casting metal, especially steel, which has a casting format (GF) that is defined by respective two opposite broad faces (2, 3) and small faces (4, 5). The broad faces (2, 3) have a cooling area (6) which designed for the maximum casting width and comprises a plurality of cooling channels (7) extending in the direction of casting and being connected to a coolant circuit. The small faces (4, 5) can be adjusted to a predetermined casting format having a corresponding casting width. The aim of the invention is to provide a continuous casting mold for slab formats, especially thin slabs, which allows to adjust an even working end temperature of the broad sides and especially to reduce a considerable temperature drop in the neighborhood of the small faces while at the same time allowing to adjust different casting formats, especially smaller casting formats as compared to the maximum casting format. For this purpose, the cooling channels (7) and/or the inlet and/or outlet channels (8) of the mold cooling system can be at least partially blocked in the area of the adjustable small faces (4, 5).

Description

Die Erfindung betrifft eine gekühlte Stranggießkokille zum Gießen von Metall, insbesondere Stahl, mit einem aus jeweils zwei sich gegenüberliegenden Breitseiten und Schmalseiten gebildeten Gießformat. Die Breitseiten weisen einen für die maximale Gießbreite ausgelegten Kühlbereich auf mit mehreren sich in Gießrichtung erstreckenden, an einen Kühlmittelkreislauf angeschlossenen Kühlkanälen mit Zu- und Ablaufkanälen. Die Schmalseiten sind zur Einstellung der gewünschten Gießbreite verstellbar.The invention relates to a cooled continuous casting mold for casting metal, in particular steel, with a casting format formed from two opposite broad sides and narrow sides. The broad sides have a cooling range designed for the maximum casting width with a plurality of cooling channels with inlet and outlet channels extending in the casting direction and connected to a coolant circuit. The narrow sides are adjustable to set the desired casting width.

Bei allen Brammenkokillen (Dünn-, Mittel-, Dickbrammen) ist die Kokillenkühlung der Breitseiten für die maximale Gießbreite ausgelegt. Beim Gießen einer Bramme mit einer Gießbreite, die kleiner als die maximale Gießbreite ist, ist die intensive Kokillenkühlung auch außerhalb der verstellbaren Schmalseite wirksam. Der Kühlbereich ist damit breiter als die aktuelle Gießbreite. Es wird folglich auch dort intensiv gekühlt, wo kein Wärmeangebot des Stranges vorliegt.In all slab molds (thin, medium, thick slabs), the chill cooling of the broad sides is designed for the maximum casting width. When casting a slab with a casting width which is smaller than the maximum casting width, the intensive mold cooling is also effective outside the adjustable narrow side. The cooling area is thus wider than the current casting width. Consequently, it is also intensively cooled where there is no heat supply of the strand.

Dies führt dazu, dass es an den Breitseiten in der Nähe der Schmalseiten infolge des zweidimensionalen Wärmestroms zu einem deutlichen Temperaturabfall kommt. Abhängig vom Temperaturniveau auf den Breitseiten und deren Wandstärke zwischen Arbeitsseite und Kühlkanal, wobei die Kokillenplatten aus einem Kupferwerkstoff gefertigt sind, kann der Temperaturabfall in unmittelbarer Nähe der Schmalseiten bis zu 200°C und mehr betragen.This leads to a significant drop in temperature at the broad sides near the narrow sides as a result of the two-dimensional heat flow. Depending on the temperature level on the broad sides and their wall thickness between working side and cooling channel, wherein the mold plates are made of a copper material, the temperature drop in the immediate vicinity of the narrow sides can be up to 200 ° C and more.

Aufgrund solcher Temperaturabfälle sind keine gleichmäßigen Aufschmelzbedingungen mehr für das Gießpulver gegeben, die aber Voraussetzung für eine gute und gleichmäßige Oberflächenqualität des Strangproduktes sind.Due to such temperature drops no uniform melting conditions are given for the casting powder, but which are prerequisite for a good and uniform surface quality of the extruded product.

Da bei kleineren Gießformaten die gleichen Wassermengen wie bei der maximalen Formatbreite gefahren werden, sind bei dieser Fahrweise unnötig hohe Wassermengen erforderlich. Diese sind letztendlich zum Abkühlen des Stranges nicht notwendig und verschlechtern darüber hinaus das gleichmäßige Aufschmelzen des Gießpulvers.Since the same amounts of water are used for smaller casting formats as for the maximum format width, unnecessarily high water volumes are required for this procedure. These are ultimately not necessary for cooling the strand and also worsen the uniform melting of the casting powder.

Die japanische Druckschrift JP 09 04 7848 offenbart eine Bandstranggießkokille, deren Schmalseiten zusammen mit Absperrelementen für Kühlkanäle verfahrbar sind.The Japanese publication JP 09 04 7848 discloses a Bandstranggießkokille whose narrow sides are movable together with shut-off elements for cooling channels.

Aus der DE 41 27 333 C2 ist eine Stahlstranggießkokille bekannt, deren Formwände mit mehreren sich von oben nach unten erstreckenden, an einen Kühlwasserkreislauf angeschlossenen Kühlbohrungen versehen sind und die somit einen sich über die Breitseiten erstreckenden Kühlbereich bilden. Hier wird vorgeschlagen, im Bereich der höchsten Temperaturbelastung der Kokille, d.h. der Heizzone, den Durchlassquerschnitt der Kühlbohrungen durch Verdrängerstäbe zu verkleinern, um an diesen Stellen die Fließgeschwindigkeit des Kühlwassers zu erhöhen und den Wärmeabtransport zu erhöhen.From the DE 41 27 333 C2 is a Stahlstranggießkokille known whose mold walls are provided with a plurality of cooling holes extending from top to bottom, connected to a cooling water circuit and thus form a cooling area extending over the broad sides. Here it is proposed, in the region of the highest temperature load of the mold, ie the heating zone to reduce the passage cross-section of the cooling holes by Verdrängerstäbe to increase the flow rate of the cooling water at these points and to increase the heat dissipation.

Der Erfindung liegt die Aufgabe zugrunde, eine aus dem Stand der Technik bekannte Stranggießkokille für Brammenformate bereitzustellen, welche die Herstellung von Brammen mit unterschiedlichen Breiten ermöglicht, wobei eine gleichmäßigere Arbeitstemperatur für die Breitseiten einstellbar ist und insbesondere ein starker Temperaturabfall in der Nähe der Schmalseiten reduziert wird.The invention has for its object to provide a known from the prior art continuous casting mold for slab formats, which allows the production of slabs with different widths, with a more uniform working temperature for the broadsides is adjustable and in particular a strong temperature drop near the narrow sides is reduced ,

Diese Aufgabe wird durch die Stranggießkokille mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterentwicklungen sind in den Unteransprüchen beschrieben.This object is achieved by the continuous casting mold with the features of claim 1. Advantageous developments are described in the subclaims.

Gemäß der Erfindung wird vorgeschlagen, dass zur Einstellung eines gießbreitenabhängigen Kühlbereichs bzw. einer formatbreitenabhängigen Kühlwasserbreite die Kühlkanäle und/oder die Zu- und/oder die Ablaufkanäle der Kokillenbreitseiten im Verstellbereich der Schmalseiten und auch innerhalb des Gießformates zumindest teilweise bzw. vollständig absperrbar sind. Die Absperrung kann in der Kokillenplatte, der Stahlzwischenplatte einer Kassettenkokille und/oder dem Wasserkasten erfolgen. Die Absperrung kann im Vorlauf- oder im Rücklauf der Kokille erfolgen.According to the invention, it is proposed that the cooling channels and / or the inlet and / or outlet channels of the wide sides of the mold in the adjustment region of the narrow sides and also within the adjustment range of a cooling-width-dependent cooling area or a format width-dependent cooling water width Gießformates are at least partially or completely shut off. The shut-off can be done in the mold plate, the intermediate steel plate of a Kassettenkokille and / or the water box. The shut-off can be done in the supply or in the return of the mold.

Die Absperrung soll möglich sein zwischen einem Bereich der Schmalseitenplatten bis zur maximalen Kühlbreite. Eine Absperrung ist auch möglich in einem schmalseitennahen Bereich, der über die eigentliche Schmalseite in das Gießformat hinausgehen kann, bis zur maximalen Kühlbreite.The shut-off should be possible between an area of the narrow side plates up to the maximum cooling width. A barrier is also possible in a narrow side area, which can go beyond the actual narrow side in the casting format, up to the maximum cooling width.

Indem das Kühlmedium, insbesondere Kühlwasser, im Schmalseitenbereich und außerhalb des Gießformates abgesperrt bzw. stark reduziert wird, wird die Temperatur der Arbeitsseite der Breitseiten im Bereich der Schmalseite vergleichmäßigt. Aufgrund der gleichmäßigeren Temperaturverteilung auf der Arbeitsseite der Breitseiten im Badspiegelbereich wird das Aufschmelzen des Gießpulvers und damit die Oberflächenqualität des Gießprodukts verbessert.By shutting off or greatly reducing the cooling medium, in particular cooling water, in the narrow side region and outside of the casting format, the temperature of the working side of the broad sides in the region of the narrow side is made uniform. Due to the more uniform temperature distribution on the working side of the broad sides in the bathroom mirror area, the melting of the casting powder and thus the surface quality of the cast product is improved.

Ein Vorteil ergibt sich insbesondere beim Gießen von kleinen Gießformaten. Durch die formatbreitenabhängige Kühlwasserbreitenanpassung kann der Kühlmediumbedarf, insbesondere Wasserbedarf, reduziert werden und/oder die Wassergeschwindigkeit erhöht werden. Dies ist insbesondere bei konstanter Gießleistung von Bedeutung, da bei kleinen Gießbreiten mit höheren Gießgeschwindigkeiten höhere Wassergeschwindigkeiten möglich sind. Mit den höheren Wassergeschwindigkeiten kann der Wärmeübergang erhöht werden und somit die Temperaturerhöhung der Arbeitsseite infolge der höheren Gießgeschwindigkeit zumindest teilweise kompensiert werden.An advantage arises in particular when casting small casting formats. Due to the format width-dependent cooling water width adjustment, the cooling medium requirement, in particular water demand, can be reduced and / or the water speed can be increased. This is particularly important with constant casting performance of importance because higher water velocities are possible with small casting widths with higher casting speeds. With the higher water speeds, the heat transfer can be increased and thus the temperature increase of the working side due to the higher casting speed can be at least partially compensated.

Wie oben ausgeführt, sind die sich mindestens über den Verstellbereich der Schmalseiten erstreckenden Kühlkanäle ganz oder teilweise absperrbar. Berechnungen haben ergeben, dass darüber hinaus auch die Kühlkanäle, die sich bis zu 100 mm je Seite im schmalseitennahen Bereich in das Gießformat erstrecken, absperrbar sein sollen, um die Temperaturverläufe der Breitseiten zu vergleichmäßigen.As stated above, the cooling channels extending at least over the adjustment range of the narrow sides can be completely or partially shut off. Calculations have shown that in addition, the cooling channels, which are up to 100 mm per side in the narrow-side area in the casting format extend, be shut off to even out the temperature curves of the broadsides.

Eine gleichmäßige Temperaturverteilung auf der Arbeitsseite der Breitseiten wird dann erreicht, wenn das Maß der Absperrung des Kühlmittelflüsses zur Kokillenmitte hin abnimmt bzw. die Absperrung der Kühlkanäle zur Kokillenmitte hin geringer wird. Dies kann dadurch erreicht werden, dass entsprechende Absperrelemente im schmalseitennahen Bereich und/oder im Gießformat sich zur Kokillenmitte hin verjüngen.A uniform temperature distribution on the working side of the broad sides is achieved when the degree of shut-off of the coolant liquid decreases towards the middle of the mold or the shut-off of the cooling channels towards the middle of the mold becomes smaller. This can be achieved in that corresponding shut-off elements in the narrow-side region and / or in the casting format taper towards the center of the mold.

Vorzugsweise handelt es sich bei dem Kühlmittel um Wasser. Die gleichmäßigste Temperaturverteilung wird dann erreicht, wenn die Wassergeschwindigkeit im Bereich der teilweise absperrbaren Kühlkanäle maximal 25m/s und mindestens 0,5m/s beträgt.Preferably, the coolant is water. The most uniform temperature distribution is achieved when the water velocity in the area of the partially shut-off cooling channels is at most 25 m / s and at least 0.5 m / s.

Zudem empfiehlt es sich, dass die Wassergeschwindigkeit der Kühlkanäle im Kühlbereich mit nicht abgesperrten Kühlkanälen eine Mindestgeschwindigkeit von 0,5m/s beträgt. Dies wird durch entsprechend ausgelegte Absperrelemente erreicht.In addition, it is recommended that the water speed of the cooling channels in the cooling area with unobstructed cooling channels is a minimum speed of 0.5 m / s. This is achieved by appropriately designed shut-off elements.

Bei einer bevorzugten Ausführungsform wird die Absperrung der einzelnen Kühlkanäle durch an dem Schmalseitenträger angeordnete Absperrelemente erreicht. Diese sind vorzugsweise als Bolzen ausgebildet, die den Zulauf oder den Ablauf der einzelnen Kühlkanäle steuern. Die Absperrelemente sind mit der jeweiligen Schmalseite bzw. dem Schmalseitenträger verfahrbar. Über die Schmalseiten wird das gewünschte Gießformat bzw. die Gießbreite eingestellt. In dieser Position werden die Kühlkanäle der Breitseiten in der Nähe der Schmalseiten zumindest teilweise abgesperrt. Auf diese Weise kommt es nicht zu einer unerwünschten Überkühlung dieser Bereiche der Breitseiten, was sich vorteilhaft auf das Aufschmelzverhalten des Gießpulvers und damit die Oberflächenqualität des Strangproduktes auswirkt.In a preferred embodiment the shut-off of the individual cooling channels is achieved by shut-off elements arranged on the narrow-side support. These are preferably designed as bolts that control the inlet or the outlet of the individual cooling channels. The shut-off elements are movable with the respective narrow side or the narrow side carrier. The desired casting format or the casting width is set via the narrow sides. In this position, the cooling channels of the broad sides near the narrow sides are at least partially shut off. In this way, it does not lead to an undesirable overcooling of these areas of broadsides, which has an advantageous effect on the melting behavior of the casting powder and thus the surface quality of the extruded product.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und aus der nachfolgenden Beschreibung, in der die in den Fig. dargestellte Ausführungsform der Erfindung näher erläutert wird.
Hierbei zeigen:

Fig. 1
eine Draufsicht auf eine Kokille mit Breit- und Schmalseiten und einer Kühlwasserbreitenanpassung;
Fig. 2
eine Seitenansicht einer Kokille sowie die Darstellung des mittleren Arbeitsseitentemperaturverlaufs unterhalb des Badspiegels bei einer Kokille mit und ohne Kühlwasserbreitenanpassung.
Further details and advantages of the invention will become apparent from the subclaims and from the following description in which the embodiment of the invention shown in FIGS. Is explained in more detail.
Hereby show:
Fig. 1
a plan view of a mold with broad and narrow sides and a Kühlwasserbreitenanpassung;
Fig. 2
a side view of a mold and the representation of the average Arbeitsseitentemperaturverlaufs below the bath level in a mold with and without cooling water width adjustment.

Die Fig. 1 zeigt eine Draufsicht auf eine Stranggießkokille 1, die sich aus zwei gegenüberliegenden Breitseiten 2, 3 und Schmalseiten 4, 5 zusammensetzt, die zwischen sich das Gießformat für die jeweilige Bramme ausbilden. Die Schmalseiten 4, 5 sind zwischen den Breitseiten 2, 3 verstellbar, um ein vorgegebenes bzw. gewünschtes Gießformat GFgeg bzw. eine Gießbreite einzustellen. Um auch Gießformate mit maximaler Gießbreite sicher gießen zu können, ist der Kühlbereich 6 der Breitseiten 2, 3 entsprechend der maximalen Gießbreite ausgelegt. Die Breitseiten 2, 3 weisen vertikale Kühlkanäle 7 in Form von Bohrungen auf, die jeweils mittels eines Zulaufes 8 und eines Ablaufes mit einem Kühlwasserkreislauf verbunden sind.The Fig. 1 shows a plan view of a continuous casting mold 1, which consists of two opposite broad sides 2, 3 and narrow sides 4, 5, which form between them the casting format for the respective slab. The narrow sides 4, 5 are adjustable between the broad sides 2, 3 in order to set a predetermined or desired casting format GF geg or a casting width. In order to cast casting formats with maximum casting width safely, the cooling area 6 of the broad sides 2, 3 is designed according to the maximum casting width. The broad sides 2, 3 have vertical cooling channels 7 in the form of holes, which are each connected by means of an inlet 8 and a drain with a cooling water circuit.

Wenn nun ein Gießformat GFmax mit maximaler Gießbreite gegossen wird, werden alle Kühlkanäle 7 von Kühlwasser durchflossen und die Breitseiten 2, 3 über den gesamten Kühlbereich 6 gekühlt.If now a casting format GF max is poured with maximum casting width, all cooling channels 7 are traversed by cooling water and the broadsides 2, 3 cooled over the entire cooling region 6.

Wird ein Gießformat GFgeg mit kleinerer Gießbreite eingestellt, werden die Kühlkanäle 7 bzw. die Zuläufe 8 im Bereich 9 zumindest teilweise abgesperrt.If a casting format GF geg set with a smaller casting width, the cooling channels 7 and the inlets 8 are at least partially shut off in the area 9.

Es ist auch gezeigt, den Bereich 9 über den eigentlichen Verstellbereich der Schmalseiten in das Gießformat zu vergrößern. Dann werden auch Kühlkanäle, die sich in das Gießformat über die eigentliche Schmalseitenplatte erstrecken, noch abgesperrt. Es ist festgestellt worden, dass die teilweise Absperrung der Kühlkanäle sich bis 100 mm je Seite in das Gießformat erstrecken kann.It is also shown to increase the area 9 over the actual adjustment of the narrow sides in the casting format. Then cooling channels, which extend in the casting format on the actual narrow side plate, still locked. It has been found that the partial shut-off of the cooling channels can extend to 100 mm per side in the casting format.

Die zumindest teilweise Absperrung der Kühlkanäle 7 wird nach einer bevorzugten Ausführungsform mittels Absperrelementen 10 realisiert, die in'Form von Bolzen an dem Träger 11 der Schmalseiten 4, 5 befestigt sind und mit der Schmalseite verfahren werden. Sie sind in Richtung Kokillenmitte verjüngend geformt und üben aufgrund dieses sich verjüngenden Endes 12 einen zur Kokillenmitte hin abnehmenden Sperreinfluss auf die Zuflüsse der Kanäle aus.The at least partial blocking of the cooling channels 7 is realized according to a preferred embodiment by means of shut-off elements 10, which are fastened in the form of bolts to the carrier 11 of the narrow sides 4, 5 and are moved with the narrow side. They are tapered towards Kokillenmitte and exercise due to this tapered end 12 a decreasing towards Kokillenmitte barrier effect on the tributaries of the channels.

Fig. 2 zeigt eine Seitenansicht einer Kokille mit den beiden Schmalseiten 4, 5 sowie die Darstellung des mittleren Arbeitsseitentemperaturverlaufs unterhalb des Badspiegels bei einer Kokille mit (13a) und ohne (13b) Kühlwasserbreitenanpassung nach der Erfindung. Der Badspiegel ist mit 14 bezeichnet. Der Kühlbereich 6 erstreckt sich über die gesamte Kokillenbreitseite, wobei die Kokillenkühlung in Anpassung an die verschobenen Schmalseiten reduziert oder vollständig abgesperrt sein kann. Wenn die Kokillenkühlung in dem Bereich zwischen dem maximalen Gießformat und den verschobenen Schmalseiten 4, 5 reduziert bzw. abgesperrt ist, wirkt sich dies positiv auf die Vergleichmäßigung der Arbeitsseitentemperatur unterhalb des Badspiegels aus, wobei die Arbeitsseitentemperatur bis zu den Schmalseiten konstant ist, während sie ohne die erfindungsgemäße Einflussnahme auf die Kühlung zu den Schmalseiten hin stark abnimmt. Fig. 2 shows a side view of a mold with the two narrow sides 4, 5 and the representation of the average working temperature profile below the bath level in a mold with (13a) and without (13b) cooling water width adjustment according to the invention. The bathroom mirror is labeled 14. The cooling region 6 extends over the entire Kokillenbreitseite, wherein the Kokillenkühlung may be reduced in adaptation to the shifted narrow sides or completely shut off. If the chill cooling is reduced in the area between the maximum casting format and the shifted narrow sides 4, 5, this has a positive effect on the equalization of the working side temperature below the bath level, the working side temperature is constant up to the narrow sides, while without the influence of the invention on the cooling to the narrow sides decreases sharply.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Stranggießkokillecontinuous casting
22
Breitseitebroadside
33
Breitseitebroadside
44
Schmalseitenarrow side
55
Schmalseitenarrow side
66
Kühlbereichcooling area
77
vertikale Kühlkanälevertical cooling channels
88th
KühlmittelzulaufCoolant inlet
99
Bereich mit zumindest teilweise abgesperrten KühlkanälenArea with at least partially shut-off cooling channels
1010
Absperrelementshut-off
1111
SchmalseitenträgerNarrow side carrier
1212
sich verjüngendes Ende des Absperrelementestapered end of the shut-off element
13a13a
mittlerer Arbeitsseitentemperaturverlauf unterhalb des Badspiegels bei einer Kokille mit Kühlwasserbreitenanpassungmean working side temperature profile below the bath level at a mold with cooling water width adjustment
13b13b
mittlerer Arbeitsseitentemperaturverlauf unterhalb des Badspiegels bei einer Kokille ohne Kühlwasserbreitenanpassungmean working side temperature profile below the bath level at a mold without cooling water width adjustment
1414
BadspiegelBathroom mirror

Claims (8)

  1. Cooled continuous casting mould (1) for the casting of metal, with a casting format (GF) formed by two mutually opposite wide sides (2, 3) and two mutually opposite narrow sides (4, 5), wherein the wide sides (2, 3) have a cooling region, which is designed for the maximum casting width, with several cooling channels (7), which extend in casting direction and are connected with a coolant circuit, with inflow and outflow channels (8) and wherein the cooling channels (7) can be at least partly blocked in the region of the narrow sides (2, 3) with the help of blocking elements (10); and that the narrow sides (4, 5) are adjustable for the setting of a predetermined casting format with corresponding casting width within a range (9); characterised in that the blocking elements (10) are further constructed to also at least partly block the inflow and outflow channels (8) in the adjusting range alternatively or additionally to the cooling channels (7) and to so undertake blocking of the cooling channels (7) and/or the inflow and outflow channels (8) that the effect of the blocking decreases from the narrow side (4, 5) towards the casting format.
  2. Continuous casting mould according to claim 1, characterised in that the blocking starting from the maximum cooling width extends to a maximum of 100 millimetres beyond the narrow sides (4, 5) into the casting format.
  3. Continuous casting mould according to claim 1, characterised in that the at least partial blocking takes place in the mould plate, the steel intermediate plate in the case of a cassette mould and/or in the water tank.
  4. Continuous casting mould according to any one of claims 1 to 3, characterised in that the blocking elements (10) have for realisation of the decreasing blocking effect a form (12) narrowing in the direction of the mould centre.
  5. Continuous casting mould according to claim 4, characterised in that the blocking elements (10) are movable together with the respective narrow side (4, 5).
  6. Continuous casting mould according to any one of claims 1 to 5, characterised in that the blocking elements (10) in the form of pins are fastened to a narrow-side support (11).
  7. Method of using a continuous casting mould according to any one of claims 1 to 6, characterised in that the coolant speed in the region (9) of the at least partly blockable cooling channels (7) and/or inflow and/or outflow channels (8) is at most 25 m/s and at least 0.5 m/s.
  8. Method of using a continuous casting mould according to any one of claims 1 to 6, characterised in that the coolant speed of the cooling channels (7) in the cooling region with non-blocked cooling channels (7) is a minimum speed of 0.5 m/s.
EP05735723A 2004-05-04 2005-04-25 Cooled continuous casting mold Not-in-force EP1742751B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021899A DE102004021899A1 (en) 2004-05-04 2004-05-04 Chilled continuous casting mold
PCT/EP2005/004413 WO2005107978A2 (en) 2004-05-04 2005-04-25 Cooled continuous casting mold

Publications (2)

Publication Number Publication Date
EP1742751A2 EP1742751A2 (en) 2007-01-17
EP1742751B1 true EP1742751B1 (en) 2010-07-14

Family

ID=34978789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05735723A Not-in-force EP1742751B1 (en) 2004-05-04 2005-04-25 Cooled continuous casting mold

Country Status (8)

Country Link
US (1) US20090199993A1 (en)
EP (1) EP1742751B1 (en)
JP (1) JP4819038B2 (en)
CN (1) CN100431739C (en)
AT (1) ATE473821T1 (en)
DE (2) DE102004021899A1 (en)
RU (1) RU2379155C2 (en)
WO (1) WO2005107978A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO347543B1 (en) * 2008-11-21 2023-12-27 Norsk Hydro As Støpeutstyr for støping av valseblokk
US8662145B2 (en) * 2012-03-22 2014-03-04 Novelis Inc. Method of and apparatus for casting metal slab

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627027A (en) * 1969-10-06 1971-12-14 Wiener Schwachstromwerke Gmbh Casting mold assembly for casting continuous strip
US4640337A (en) * 1985-05-01 1987-02-03 Gus Sevastakis Continuous casting apparatus
US4759400A (en) * 1985-10-03 1988-07-26 Kawasaki Steel Corporation Belt type cast sheet continuous caster and prevention of melt leakage in such a caster
JPS63144847A (en) * 1986-12-10 1988-06-17 Kawasaki Steel Corp Belt cooler for belt type continuous casting machine
JPS63203255A (en) * 1987-02-20 1988-08-23 Hitachi Ltd Belt type continuous casting machine
JP2922252B2 (en) * 1990-04-18 1999-07-19 川崎製鉄株式会社 Mold for continuous casting equipment
JPH04178246A (en) * 1990-11-13 1992-06-25 Nkk Corp Builtup casting mold
DE4127333C2 (en) * 1991-08-19 2000-02-24 Schloemann Siemag Ag Continuous casting mold
DE4403050C1 (en) * 1994-01-28 1995-09-28 Mannesmann Ag Continuous casting mold for guiding strands
JP3117391B2 (en) * 1995-08-02 2000-12-11 三菱重工業株式会社 Belt type continuous casting equipment
US5771958A (en) * 1995-09-14 1998-06-30 Ag Industries, Inc. Mold for continuous casting system
JPH10128513A (en) * 1996-10-30 1998-05-19 Sumitomo Metal Ind Ltd Division mold for continuous casting
CN2290433Y (en) * 1997-01-29 1998-09-09 原守喜 Cooler for increasing pulling speed of continuous casting
DE19802809A1 (en) * 1998-01-27 1999-07-29 Km Europa Metal Ag Liquid-cooled mold

Also Published As

Publication number Publication date
EP1742751A2 (en) 2007-01-17
WO2005107978A2 (en) 2005-11-17
RU2006142701A (en) 2008-06-10
WO2005107978A3 (en) 2005-12-29
US20090199993A1 (en) 2009-08-13
JP4819038B2 (en) 2011-11-16
DE102004021899A1 (en) 2005-12-01
JP2007536091A (en) 2007-12-13
CN100431739C (en) 2008-11-12
CN1972771A (en) 2007-05-30
DE502005009905D1 (en) 2010-08-26
ATE473821T1 (en) 2010-07-15
RU2379155C2 (en) 2010-01-20

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