EP1393837B1 - Mould pipe - Google Patents

Mould pipe Download PDF

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Publication number
EP1393837B1
EP1393837B1 EP03018893A EP03018893A EP1393837B1 EP 1393837 B1 EP1393837 B1 EP 1393837B1 EP 03018893 A EP03018893 A EP 03018893A EP 03018893 A EP03018893 A EP 03018893A EP 1393837 B1 EP1393837 B1 EP 1393837B1
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EP
European Patent Office
Prior art keywords
wall thickness
longitudinal edge
edge regions
wall
regions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03018893A
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German (de)
French (fr)
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EP1393837A1 (en
Inventor
Roland Hauri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KME Special Products GmbH and Co KG
Original Assignee
KM Europa Metal AG
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Publication date
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Publication of EP1393837A1 publication Critical patent/EP1393837A1/en
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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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting

Definitions

  • the invention relates to a mold tube made of copper for the continuous casting of metals according to the features in the preamble of claim 1.
  • the state of the art includes mold tubes with rectangular inside and External cross sections and with rounded longitudinal edge areas, which a have nominal wall thickness that is 8% to 10% of the distance at the Mouth of each other is frontally opposite inner surfaces.
  • mold tubes the inner surfaces indirectly under the influence of heat dissipating, fed from the outside of the pipe wall To provide cooling media.
  • the mold tubes with the outer contours fitted coats which, together with the outer surfaces
  • the mold tubes form precisely defined gaps, passed through the cooling media become.
  • the cooling media can pass through vertically into the walls of the mold tubes introduced cooling channels flow.
  • the outer Apply cooling media to the surfaces of the mold tubes via spray nozzles.
  • DD 266 753 A counts a continuous casting mold to the prior art, which in their conicity is adjustable.
  • the wall thickness of the Kokillenkanten this is thinner than formed the wall thicknesses of the surfaces.
  • On one or more surfaces of the Continuous casting mold is a device for applying a force to the Outer surface provided so that the surfaces are moved against each other can. This is possible because the wall thickness of the edges is only 0.8 times up 0.05 times the wall thickness of the surfaces corresponds.
  • JP 61276749 A a mold tube is disclosed, which in a certain Height range has a reduced wall thickness to this height range Ultrasonic vibrations better on a molten steel introduced into the mold to be able to transfer.
  • the part reduced in wall thickness has a casting direction measured height, which is an integer multiple of half the wavelength of the applied vibration corresponds. The dimensions are therefore closely related Related to the frequency of the applied vibrations.
  • the invention is - based on the prior art - the object of a Molded copper tube for continuous casting of metals to create especially at casting speeds> 2.5 m / min a perfect transfer ensures the heat from the metal to be cast in a cooling medium.
  • the wall thickness of the rectangular mold tube is in the longitudinal edge regions opposite the wall thickness in the wall areas between the Long edge areas by 10% to 40% smaller sized. This action leads to ensure that the heat is generated even at casting speeds> 2.5 m / min can be properly transferred to the respective cooling medium, and indeed regardless of whether a cooling medium in a gap between a Kokillenrohr and a surrounding the mold tube jacket is performed, whether the Cooling medium flows in cooling channels in the wall of a Kokillenrohrs or whether the outer surfaces of a Kokillenrohrs sprayed directly with a cooling medium become.
  • the wall thickness reduction in the longitudinal edge areas is on a Height range limited, in which the respective bath level of the liquid metal lies.
  • the wall thickness according to the features of claim 2 in the Longitudinal edge areas opposite the wall thickness in the wall areas between the longitudinal edge areas by 25% to 30% smaller.
  • the bath level is in Mold tube in a height range extending from the filling end up to about 500 mm from the filling front side extends.
  • the height level of the bathroom mirror according to the characteristics of Patent claim 4 preferably between 80 mm and 180 mm below the Filling end.
  • FIGS. 1 and 2 1 denotes a mold tube made of copper for the continuous casting of Metals, in particular steel, called.
  • the mold tube 1 has a rectangular inner and outer cross section with inside and outside rounded longitudinal edge regions 2.
  • the so-called nominal Wall thickness WD of the wall portions 3 between the longitudinal edge regions 2 amounts 8% to 10% of the distance A at the muzzle 4 frontally opposite each other lying inner surfaces 5.
  • the wall thickness WD1 in the longitudinal edge regions 2 is opposite to the wall thickness WD in the wall regions 3 between the longitudinal edge regions 2 by 10% to 40% smaller.
  • the different wall thicknesses WD and WD1 of the mold tube 1 of FIGS and 2 are present over the entire height H (length) of the mold tube 1.
  • the cooling of the mold tube 1 can according to one indicated in the figure 2 first embodiment carried by a cooling medium having a gap. 6 flows through the between the outer surface 7 of the mold tube 1 and a Sheath 8 is formed, which encloses the mold tube 1 with a defined distance A1.
  • a second embodiment shown in FIG. 2 looks into the wall regions 3 of the mold tube 1 introduced longitudinal channels 9, which with a suitable Be applied cooling medium.
  • FIG. 2 shows an embodiment of a cooling method which the outer surfaces 7 of the mold tube 1 in partial areas or be cooled in total by means of a cooling medium, which on these surfaces. 7 is sprayed from nozzles 10.
  • FIG. 3 shows a mold tube 1a made of copper for the continuous casting of metals, in which the wall thickness reduction in the longitudinal edge regions 2 on a Height range 11 is limited, in which the level of the not closer illustrated bath level of the liquid metal is located.
  • This altitude range 11 usually extends between the filling end 12 of the mold tube 1a and an area which is about 500 mm below the Ein sparnseite 12.
  • the cooling of the mold tube 1a can be done as the cooling of the mold tube 1. In this respect, a further explanation is unnecessary.
  • the liquid metal bath level illustrated WD2 wall thickness Pipe wall 16 over the entire circumference by 10% to 40% of the nominal Wall thickness WD3 reduced.
  • This height range 14 extends from the Ein Schollstirnseite 12a from about 500 mm in the direction of the pipe mouth 4a.
  • the Badspiegel as such is usually in a height range 15 between 80 mm and 180 mm below the filler end 12a.
  • the nominal wall thickness WD3 is 8% to 10% of the distance A2 of the pipe mouth 4a frontally opposite each other inner surfaces 5a.
  • FIGS. 4 and 5 of a mold tube 1b can thus be cooled be as explained with reference to FIG 2. Insofar can on a repeated description will be omitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

Mold tube made from copper has a rectangular inner and outer cross-section with rounded longitudinal edge regions (2) and a nominal wall thickness which is 8-10 % of the distance of the inner surfaces (5) lying opposite each other on the tube mouth. The wall thickness in the longitudinal edge regions opposite the wall thickness of the wall regions between the longitudinal edge regions is 10-40 % smaller. An Independent claim is also included for an alternative mold tube.

Description

Die Erfindung betrifft ein Kokillenrohr aus Kupfer zum Stranggießen von Metallen gemäß den Merkmalen im Oberbegriff des Patentanspruchs 1.The invention relates to a mold tube made of copper for the continuous casting of metals according to the features in the preamble of claim 1.

Zum Stand der Technik zählen Kokillenrohre mit rechteckigen Innen- und Außenquerschnitten sowie mit gerundeten Längskantenbereichen, welche eine nominale Wanddicke aufweisen, die 8 % bis 10 % des Abstands der an der Rohrmündung einander frontal gegenüber liegenden inneren Oberflächen beträgt.The state of the art includes mold tubes with rectangular inside and External cross sections and with rounded longitudinal edge areas, which a have nominal wall thickness that is 8% to 10% of the distance at the Mouth of each other is frontally opposite inner surfaces.

Des Weiteren ist es bei Kokillenrohren bekannt, die inneren Oberflächen indirekt unter den Einfluss von Wärme abführenden, von außen der Rohrwand zuführbaren Kühlmedien zu stellen. Hierbei können die Kokillenrohre mit den Außenkonturen angepassten Mänteln versehen sein, die zusammen mit den äußeren Oberflächen der Kokillenrohre genau definierte Spalte bilden, durch die Kühlmedien geleitet werden. Ferner können die Kühlmedien durch vertikal in die Wände der Kokillenrohre eingebrachte Kühlkanäle fließen. Schließlich ist es noch bekannt, die äußeren Oberflächen der Kokillenrohre über Sprühdüsen mit Kühlmedien zu beaufschlagen.Furthermore, it is known for mold tubes, the inner surfaces indirectly under the influence of heat dissipating, fed from the outside of the pipe wall To provide cooling media. Here, the mold tubes with the outer contours fitted coats which, together with the outer surfaces The mold tubes form precisely defined gaps, passed through the cooling media become. Furthermore, the cooling media can pass through vertically into the walls of the mold tubes introduced cooling channels flow. Finally, it is still known the outer Apply cooling media to the surfaces of the mold tubes via spray nozzles.

Durch die DD 266 753 A zählt eine Stranggießkokille zum Stand der Technik, die in ihrer Konizität einstellbar ist. Die Wanddicke der Kokillenkanten ist hierzu dünner als die Wanddicken der Flächen ausgebildet. An einer oder mehreren Flächen der Stranggießkokille ist eine Vorrichtung zum Aufbringen einer Kraft auf die Außenfläche vorgesehen, so dass die Flächen gegeneinander verschoben werden können. Dies ist möglich, da die Wanddicke der Kanten nur dem 0,8fachen bis 0,05fachen der Wanddicke der Flächen entspricht.By DD 266 753 A counts a continuous casting mold to the prior art, which in their conicity is adjustable. The wall thickness of the Kokillenkanten this is thinner than formed the wall thicknesses of the surfaces. On one or more surfaces of the Continuous casting mold is a device for applying a force to the Outer surface provided so that the surfaces are moved against each other can. This is possible because the wall thickness of the edges is only 0.8 times up 0.05 times the wall thickness of the surfaces corresponds.

In der JP 61276749 A wird ein Kokillenrohr offenbart, das in einem bestimmten Höhenbereich eine reduzierte Wanddicke besitzt, um in diesem Höhenbereich Ultraschallschwingungen besser auf eine in die Kokille eingebrachte Stahlschmelze übertragen zu können. Der in der Wanddicke reduzierte Teil hat eine in Gießrichtung gemessene Höhe, die einem ganzzahligen Vielfachen der halben Wellenlänge der aufgebrachten Schwingung entspricht. Die Abmessungen hängen daher in engem Zusammenhang mit der Frequenz der aufgebrachten Schwingungen.In JP 61276749 A a mold tube is disclosed, which in a certain Height range has a reduced wall thickness to this height range Ultrasonic vibrations better on a molten steel introduced into the mold to be able to transfer. The part reduced in wall thickness has a casting direction measured height, which is an integer multiple of half the wavelength of the applied vibration corresponds. The dimensions are therefore closely related Related to the frequency of the applied vibrations.

Im Zuge der Bestrebungen der Praxis, die Gießgeschwindigkeiten zu erhöhen, und zwar über 2,5 m/min hinaus, kann aufgrund der beschränkten Wärmedurchgangskapazität der Grundwerkstoffe der Kokillenrohre die dann anfallende Wärme nur noch zum Teil an die Wärme abführenden Kühlmedien übertragen werden. Die Folge sind partielle Überhitzungen und dabei Beschädigungen der inneren Oberflächen der Kokillenrohre. Dieser Sachverhalt ist insbesondere in den Höhenbereichen der im Niveau variierenden Badspiegel bzw. im Bereich der ersten Phasen der Primärerstarrungen der abzugießenden Metalle zu beobachten, weil dort das größte Wärmeangebot an das Kokillenmaterial herrscht.As part of the practice efforts to increase the casting speeds, and Although over 2.5 m / min out, due to the limited heat transfer capacity the base materials of mold tubes then accumulating Transfer heat only partially to the heat dissipating cooling media become. The result is partial overheating and damage to the inner surfaces of the mold tubes. This fact is particularly in the Height ranges of the level varying in the bath level or in the area of the first To observe phases of primary solidification of the metals to be cast off because there the largest heat supply to the mold material prevails.

Der Erfindung liegt - ausgehend vom Stand der Technik - die Aufgabe zugrunde, ein Kokillenrohr aus Kupfer zum Stranggießen von Metallen zu schaffen, das insbesondere bei Gießgeschwindigkeiten > 2,5 m/min eine einwandfreie Überführung der Wärme aus dem abzugießenden Metall in ein Kühlmedium gewährleistet.The invention is - based on the prior art - the object of a Molded copper tube for continuous casting of metals to create especially at casting speeds> 2.5 m / min a perfect transfer ensures the heat from the metal to be cast in a cooling medium.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of claim 1.

Die Wanddicke des rechteckigen Kokillenrohrs ist in den Längskantenbereichen gegenüber der Wanddicke in den Wandbereichen zwischen den Längskantenbereichen um 10 % bis 40 % kleiner bemessen. Diese Maßnahme führt dazu, dass auch bei Gießgeschwindigkeiten > 2,5 m/min die anfallende Wärme einwandfrei an das jeweilige Kühlmedium überführt werden kann, und zwar unabhängig davon, ob nun ein Kühlmedium in einem Spalt zwischen einem Kokillenrohr und einem das Kokillenrohr umgebenden Mantel geführt wird, ob das Kühlmedium in Kühlkanälen in der Wand eines Kokillenrohrs strömt oder ob die äußeren Oberflächen eines Kokillenrohrs direkt mit einem Kühlmedium besprüht werden. Die Wanddickenreduzierung in den Längskantenbereichen ist auf einen Höhenbereich beschränkt, in welchem der jeweilige Badspiegel des flüssigen Metalls liegt.The wall thickness of the rectangular mold tube is in the longitudinal edge regions opposite the wall thickness in the wall areas between the Long edge areas by 10% to 40% smaller sized. This action leads to ensure that the heat is generated even at casting speeds> 2.5 m / min can be properly transferred to the respective cooling medium, and indeed regardless of whether a cooling medium in a gap between a Kokillenrohr and a surrounding the mold tube jacket is performed, whether the Cooling medium flows in cooling channels in the wall of a Kokillenrohrs or whether the outer surfaces of a Kokillenrohrs sprayed directly with a cooling medium become. The wall thickness reduction in the longitudinal edge areas is on a Height range limited, in which the respective bath level of the liquid metal lies.

Bevorzugt ist die Wanddicke gemäß den Merkmalen des Patentanspruchs 2 in den Längskantenbereichen gegenüber der Wanddicke in den Wandbereichen zwischen den Längskantenbereichen um 25 % bis 30 % kleiner bemessen.Preferably, the wall thickness according to the features of claim 2 in the Longitudinal edge areas opposite the wall thickness in the wall areas between the longitudinal edge areas by 25% to 30% smaller.

Entsprechend den Merkmalen des Patentanspruchs 3 liegt der Badspiegel im Kokillenrohr in einem Höhenbereich, der sich von der Einfüllstirnseite aus bis zu etwa 500 mm von der Einfüllstirnseite erstreckt.According to the features of claim 3, the bath level is in Mold tube in a height range extending from the filling end up to about 500 mm from the filling front side extends.

Erfahrungsgemäß liegt das Höhenniveau des Badspiegels nach den Merkmalen des Patentanspruchs 4 bevorzugt zwischen 80 mm und 180 mm unterhalb der Einfüllstirnseite.Experience has shown that the height level of the bathroom mirror according to the characteristics of Patent claim 4 preferably between 80 mm and 180 mm below the Filling end.

Die Erfindung ist nachfolgend anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert, wobei die Figuren 1 und 2 lediglich der Illustrierung der Erfindung dienen und nicht Ausführungsformen der Erfindung sind, für die Schutz beansprucht wird. Es zeigen:

Figur 1
in der Perspektive ein Kokillenrohr;
Figur 2
in vergrößertem Maßstab eine Draufsicht auf das Kokillenrohr der Figur 1 mit drei verschiedenen Kühlvarianten;
Figur 3
in der Perspektive eine weitere Ausführungsform eines Kokillenrohrs;
Figur 4
in der Perspektive eine dritte Ausführungsform eines Kokillenrohrs und
Figur 5
in vergrößertem Maßstab eine Draufsicht auf das Kokillenrohr der Figur 4.
The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings, wherein FIGS. 1 and 2 merely serve to illustrate the invention and are not embodiments of the invention for which protection is claimed. Show it:
FIG. 1
in perspective a mold tube;
FIG. 2
on an enlarged scale, a plan view of the mold tube of Figure 1 with three different cooling variants;
FIG. 3
in perspective, another embodiment of a mold tube;
FIG. 4
in perspective, a third embodiment of a mold tube and
FIG. 5
on an enlarged scale a plan view of the mold tube of Figure 4.

In den Figuren 1 und 2 ist mit 1 ein Kokillenrohr aus Kupfer zum Stranggießen von Metallen, insbesondere Stahl, bezeichnet. In FIGS. 1 and 2, 1 denotes a mold tube made of copper for the continuous casting of Metals, in particular steel, called.

Das Kokillenrohr 1 weist einen rechteckigen Innen- und Außenquerschnitt mit innen und außen gerundeten Längskantenbereichen 2 auf. Die sogenannte nominale Wanddicke WD der Wandbereiche 3 zwischen den Längskantenbereichen 2 beträgt 8 % bis 10 % des Abstands A der an der Rohrmündung 4 einander frontal gegenüber liegenden inneren Oberflächen 5.The mold tube 1 has a rectangular inner and outer cross section with inside and outside rounded longitudinal edge regions 2. The so-called nominal Wall thickness WD of the wall portions 3 between the longitudinal edge regions 2 amounts 8% to 10% of the distance A at the muzzle 4 frontally opposite each other lying inner surfaces 5.

Die Wanddicke WD1 in den Längskantenbereichen 2 ist gegenüber der Wanddicke WD in den Wandbereichen 3 zwischen den Längskantenbereichen 2 um 10 % bis 40 % kleiner bemessen.The wall thickness WD1 in the longitudinal edge regions 2 is opposite to the wall thickness WD in the wall regions 3 between the longitudinal edge regions 2 by 10% to 40% smaller.

Die unterschiedlichen Wanddicken WD und WD1 des Kokillenrohrs 1 der Figuren 1 und 2 sind über die gesamte Höhe H (Länge) des Kokillenrohrs 1 vorhanden.The different wall thicknesses WD and WD1 of the mold tube 1 of FIGS and 2 are present over the entire height H (length) of the mold tube 1.

Die Kühlung des Kokillenrohrs 1 kann gemäß einer in der Figur 2 angedeuteten ersten Ausführungsform durch ein Kühlmedium erfolgen, das einen Spalt 6 durchströmt, der zwischen der äußeren Oberfläche 7 des Kokillenrohrs 1 und einem Mantel 8 gebildet ist, welcher das Kokillenrohr 1 mit definiertem Abstand A1 umhüllt.The cooling of the mold tube 1 can according to one indicated in the figure 2 first embodiment carried by a cooling medium having a gap. 6 flows through the between the outer surface 7 of the mold tube 1 and a Sheath 8 is formed, which encloses the mold tube 1 with a defined distance A1.

Eine in der Figur 2 dargestellte zweite Ausführungsform sieht in die Wandbereiche 3 des Kokillenrohrs 1 eingebrachte Längskanäle 9 vor, die mit einem geeigneten Kühlmedium beaufschlagt werden.A second embodiment shown in FIG. 2 looks into the wall regions 3 of the mold tube 1 introduced longitudinal channels 9, which with a suitable Be applied cooling medium.

Schließlich zeigt die Figur 2 noch eine Ausführungsform einer Kühlmethode, bei welcher die äußeren Oberflächen 7 des Kokillenrohrs 1 in Teilbereichen oder insgesamt mittels eines Kühlmediums gekühlt werden, das auf diese Oberflächen 7 aus Düsen 10 gesprüht wird.Finally, FIG. 2 shows an embodiment of a cooling method which the outer surfaces 7 of the mold tube 1 in partial areas or be cooled in total by means of a cooling medium, which on these surfaces. 7 is sprayed from nozzles 10.

Die der Figur 3 zeigt ein Kokillenrohr 1a aus Kupfer zum Stranggießen von Metallen, bei welchem die Wanddickenreduzierung in den Längskantenbereichen 2 auf einen Höhenbereich 11 beschränkt ist, in welchem sich das Niveau des nicht näher veranschaulichten Badspiegels des flüssigen Metalls befindet. Dieser Höhenbereich 11 erstreckt sich in der Regel zwischen der Einfüllstirnseite 12 des Kokillenrohrs 1a und einem Bereich, der etwa 500 mm unterhalb der Einfüllstirnseite 12 liegt.3 shows a mold tube 1a made of copper for the continuous casting of metals, in which the wall thickness reduction in the longitudinal edge regions 2 on a Height range 11 is limited, in which the level of the not closer illustrated bath level of the liquid metal is located. This altitude range 11 usually extends between the filling end 12 of the mold tube 1a and an area which is about 500 mm below the Einfüllstirnseite 12.

Die Kühlung des Kokillenrohrs 1a kann wie die Kühlung des Kokillenrohrs 1 erfolgen. Insofern erübrigt sich eine nochmalige Erläuterung. The cooling of the mold tube 1a can be done as the cooling of the mold tube 1. In this respect, a further explanation is unnecessary.

Aus der gemeinsamen Betrachtung der Figuren 2 und 3 ist noch ersichtlich, wie die Wanddickenreduzierung in den Längskantenbereichen 2 erfolgt. Der ursprüngliche Verlauf des Außenumfangs des Kokillenrohrs 1a im unteren Höhenbereich ist in der Figur 2 in unterbrochener Linienführung 13 veranschaulicht.From the common consideration of Figures 2 and 3 can still be seen how the Wall thickness reduction in the longitudinal edge regions 2 takes place. The original one The course of the outer circumference of the mold tube 1a in the lower height range is in the Figure 2 illustrates in broken lines 13.

Bei der Ausführungsform eines Kokillenrohrs 1b aus Kupfer zum Stranggießen von Metallen gemäß den Figuren 4 und 5 ist im Höhenbereich 14 des nicht näher veranschaulichten Badspiegels des flüssigen Metalls die Wanddicke WD2 der Rohrwand 16 über den gesamten Umfang um 10 % bis 40 % der nominalen Wanddicke WD3 reduziert. Dieser Höhenbereich 14 erstreckt sich von der Einfüllstirnseite 12a aus etwa 500 mm in Richtung zur Rohrmündung 4a. Der Badspiegel als solcher liegt meistens in einem Höhenbereich 15 zwischen 80 mm und 180 mm unterhalb der Einfüllstirnseite 12a.In the embodiment of a mold tube 1b made of copper for continuous casting of Metals according to FIGS. 4 and 5 are not closer in the height region 14 of FIG For example, the liquid metal bath level illustrated WD2 wall thickness Pipe wall 16 over the entire circumference by 10% to 40% of the nominal Wall thickness WD3 reduced. This height range 14 extends from the Einfüllstirnseite 12a from about 500 mm in the direction of the pipe mouth 4a. Of the Badspiegel as such is usually in a height range 15 between 80 mm and 180 mm below the filler end 12a.

Auch bei dieser Ausführungsform beträgt die nominale Wanddicke WD3 8 % bis 10 % des Abstands A2 der an der Rohrmündung 4a einander frontal gegenüberliegenden inneren Oberflächen 5a.Also in this embodiment, the nominal wall thickness WD3 is 8% to 10% of the distance A2 of the pipe mouth 4a frontally opposite each other inner surfaces 5a.

Die Ausführungsform der Figuren 4 und 5 eines Kokillenrohrs 1b kann so gekühlt werden, wie es anhand der Figur 2 erläutert wurde. Insofern kann auf eine nochmalige Beschreibung verzichtet werden.The embodiment of FIGS. 4 and 5 of a mold tube 1b can thus be cooled be as explained with reference to FIG 2. Insofar can on a repeated description will be omitted.

Claims (4)

  1. Mould pipe made of copper for the continuous casting of metals, which has a rectangular inner and outer cross-section with rounded longitudinal edge regions (2) as well as a nominal wall thickness (WD), which is 8% to 10% of the spacing (A) between the inner surfaces (5) located opposing one another frontally at the tube opening (4), the inner surfaces (5) being placed indirectly under the heat-removing influence of a cooling medium which can be supplied from outside to the pipe wall (2, 3), the wall thickness (WD1) in the longitudinal edge regions (2) being smaller in dimension by 10% to 40% compared to the wall thickness (WD) of the wall regions (3) between the longitudinal edge regions (2), characterised in that the wall thickness reduction in the longitudinal edge regions (2) is limited to the height range (11), in which the level of the bath level of the liquid metal is located.
  2. Mould pipe according to claim 1, characterised in that the wall thickness (WD1) in the longitudinal edge regions (2) is smaller in dimension by 25% to 30% compared to the wall thickness (WD) in the wall regions (3) between the longitudinal edge regions (2).
  3. Mould pipe according to claim 1 or 2, characterised in that the bath level in a height range (11, 14) is up to 500 mm below the filling end face (12, 12a).
  4. Mould pipe according to any one of claims 1 to 3, characterised in that the bath level in a height range (15) is between 80 mm and 180 mm below the filling end face (12a).
EP03018893A 2002-08-29 2003-08-20 Mould pipe Expired - Lifetime EP1393837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10240457 2002-08-29
DE10240457A DE10240457A1 (en) 2002-08-29 2002-08-29 Mold pipe

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EP1393837A1 EP1393837A1 (en) 2004-03-03
EP1393837B1 true EP1393837B1 (en) 2005-11-09

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US (1) US6918428B2 (en)
EP (1) EP1393837B1 (en)
JP (1) JP4318506B2 (en)
KR (1) KR20040019951A (en)
CN (1) CN1313227C (en)
AT (1) ATE309062T1 (en)
AU (1) AU2003227317B2 (en)
BR (1) BR0303438B1 (en)
CA (1) CA2438248C (en)
DE (2) DE10240457A1 (en)
DK (1) DK1393837T3 (en)
ES (1) ES2248694T3 (en)
MX (1) MXPA03006759A (en)
RU (1) RU2319575C2 (en)
TW (1) TWI271237B (en)

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IT1403035B1 (en) * 2010-11-25 2013-09-27 Danieli Off Mecc CRYSTALLIZER FOR CONTINUOUS CASTING

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JPS5027027B1 (en) * 1969-08-11 1975-09-04
JPS5436900B2 (en) * 1974-06-05 1979-11-12
JPS5611149A (en) * 1979-07-06 1981-02-04 Nippon Steel Corp Mold for continuous casting of metal
JPS5731449A (en) * 1980-07-31 1982-02-19 Kouka Kuroomu Kogyo Kk Mold for continuous casting of steel
JPS61276749A (en) * 1985-05-31 1986-12-06 Sumitomo Metal Ind Ltd Ultrasonically oscillating method for continuous casting mold
JPS63212044A (en) * 1987-02-27 1988-09-05 Sumitomo Metal Ind Ltd Ultrasonic mold continuous casting method
DD266753A1 (en) * 1987-10-16 1989-04-12 Zim Veb K CONTINUOUS CASTING
JPH03118943A (en) * 1989-09-29 1991-05-21 Kawasaki Steel Corp Mold and method for continuously casting low and medium carbon steel
US5247988A (en) * 1989-12-19 1993-09-28 Kurzinski Cass R Apparatus and method for continuously casting steel slabs
JPH09225593A (en) * 1996-02-26 1997-09-02 Nippon Steel Corp Mold for continuously casting square billet
JPH09239496A (en) * 1996-03-11 1997-09-16 Nippon Steel Corp Mold for continuously casting square billet

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BR0303438B1 (en) 2011-03-09
CN1486804A (en) 2004-04-07
JP2004090090A (en) 2004-03-25
EP1393837A1 (en) 2004-03-03
JP4318506B2 (en) 2009-08-26
CN1313227C (en) 2007-05-02
ATE309062T1 (en) 2005-11-15
RU2319575C2 (en) 2008-03-20
CA2438248A1 (en) 2004-02-29
DE10240457A1 (en) 2004-03-11
US6918428B2 (en) 2005-07-19
TW200403113A (en) 2004-03-01
AU2003227317A1 (en) 2004-03-18
CA2438248C (en) 2011-10-18
US20040069458A1 (en) 2004-04-15
DK1393837T3 (en) 2006-03-27
KR20040019951A (en) 2004-03-06
AU2003227317B2 (en) 2010-03-04
RU2003126443A (en) 2005-02-27
MXPA03006759A (en) 2004-05-05
DE50301599D1 (en) 2005-12-15
BR0303438A (en) 2004-09-08
ES2248694T3 (en) 2006-03-16
TWI271237B (en) 2007-01-21

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