EP0931609A1 - Fluid cooled mould - Google Patents

Fluid cooled mould Download PDF

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Publication number
EP0931609A1
EP0931609A1 EP99100854A EP99100854A EP0931609A1 EP 0931609 A1 EP0931609 A1 EP 0931609A1 EP 99100854 A EP99100854 A EP 99100854A EP 99100854 A EP99100854 A EP 99100854A EP 0931609 A1 EP0931609 A1 EP 0931609A1
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EP
European Patent Office
Prior art keywords
mold according
cooling
area
chill mold
mold
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Granted
Application number
EP99100854A
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German (de)
French (fr)
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EP0931609B1 (en
Inventor
Wolfgang Hörnschemeyer
Gerhard HUGENSCHÜTT
Hector Villanueva
Dirk Dr. Rode
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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
    • B22D11/0408—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
    • 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
    • B22D11/055—Cooling the moulds
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • 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

Definitions

  • the invention relates to a liquid-cooled mold for a continuous caster a mold body made of a material with high thermal conductivity, like copper or a copper alloy.
  • Chill molds are designed to extract heat from the molten metal and, initially, through the the formation of a strand shell enables the strand to solidify.
  • mold geometries are in use, like mold tubes in round, rectangular or complex form. Mold plates are used for square / rectangular blooms or for slabs with larger Aspect ratio used. There are also special geometries, such as pre-profiles for double-T beams and thin slab molds with funnel extension in the upper one Plate area for receiving the pouring nozzle. It is characteristic of all these molds that homogeneous cooling of the surfaces is sought. Make the corner areas Special cases, since z. B. due to the design of plate molds with butt edges disturbed cooling are present. There are also areas with larger areas Given volumes of material for the rear fasteners that with Specially designed groove-like coolant channels with respect to the same Cooling can be adjusted again.
  • the local stress conditions when using funnel mold plates are on the one hand operational. They are essentially determined by on the casting side the type of steel / casting temperature, the speed, the lubrication / cooling conditions of the mold powder, the geometry of the pouring nozzle and the associated flow of the Melt. On the other hand, cooling water quality and cooling water quantity determine on the water side and water speed the mold temperatures. These sizes are partly due to the mold construction - as with the geometry of the Coolant channels - determined.
  • the invention is based on the object To create mold body, in which the heat flow in the bathroom mirror area increases is and the risk of cracking in the thermally and mechanically stressed Areas can be avoided.
  • the core point of the invention thus forms the measure in the supercritically claimed Areas on both sides of the funnel a significantly stronger cooling of the Adjust mold body.
  • the cooling capacity is proposed in these critical areas preferably by 10 to 20% over the increase horizontal neighboring areas.
  • Coolant channels can e.g. B. advantageous here be set closer so that the cooled area increases.
  • the coolant channels can also be brought closer to the surface locally; in this Case, one works unusually with different - effectively effective - cooling wall thicknesses above the cooling water.
  • wide side plates can be formed with groove-like coolant channels in the critical areas of the funnel transition with additional cooling holes Mistake; here too surprisingly increases despite less Wall thickness the crack resistance of the mold material and thus the total service life the mold plate.
  • the funnel mold plate 1 shown in FIG. 1 has the highest thermal stress at the horizontal outlet (vertical line C) of the funnel 2 on the casting side. As a direct result, there is a maximum area-related heat flow of 4.7 to 5.2 MW / m 2 at C in the casting direction GR directly below the bath level 3. There are arithmetically determined maximum temperatures of approximately 400 ° C. on the casting side 4 of the mold plate 1.
  • the cooling grooves 6 which are introduced more deeply (wall thickness between casting and cooling surface 18 mm instead of 20 mm) Intensively cooled area 5 extends in the present case over the following areas (see FIG. 1): Length horizontally from the turning point B of the funnel 2 over 370 mm to the end point D. The more intensive cooling area extends from the top edge of the plate 7 to 200 mm in the casting direction GR; this is followed by a transition zone 8 of 50 mm, in which the depth d of the cooling grooves 6 is adjusted.

Abstract

The mold body in the thermally and mechanically more heavily loaded regions has a cooling zone with higher heat flow per unit area.

Description

Die Erfindung betrifft eine flüssigkeitsgekühlte Kokille für eine Stranggießanlage mit einem formgebenden Kokillenkörper aus einem Material hoher Wärmeleitfähigkeit, wie Kupfer oder einer Kupferlegierung.The invention relates to a liquid-cooled mold for a continuous caster a mold body made of a material with high thermal conductivity, like copper or a copper alloy.

Kokillen sollen dem schmelzflüssigen Metall Wärme entziehen und über die anfangs erfolgende Strangschalenbildung eine Durcherstarrung des Strangs ermöglichen.Chill molds are designed to extract heat from the molten metal and, initially, through the the formation of a strand shell enables the strand to solidify.

Es sind abhängig vom Anwendungszweck verschiedene Kokillengeometrien in Gebrauch, wie Kokillenrohre in runder, rechteckiger oder komplexer Form. Kokillenplatten werden für quadratische/rechteckige Vorblöcke oder für Brammen mit größerem Seitenverhältnis verwendet. Daneben gibt es spezielle Geometrien, wie Vorprofile für Doppel-T-Träger und Dünnbrammenkokillen mit Trichtererweiterung im oberen Plattenbereich zur Aufnahme der Gießdüse. Allen diesen Kokillen ist zu eigen, daß eine homogene Kühlung der Flächen angestrebt wird. Die Eckenbereiche stellen Sonderfälle dar, da z. B. konstruktionsbedingt bei Plattenkokillen Stoßkanten mit gestörter Kühlung vorhanden sind. Darüber hinaus sind zum Teil Bereiche mit größeren Materialvolumina für die rückseitigen Befestigungselemente gegeben, die mit speziell gestalteten nutenartigen Kühlmittelkanälen ansatzweise in Bezug auf gleiche Kühlung wieder angeglichen werden. Depending on the application, different mold geometries are in use, like mold tubes in round, rectangular or complex form. Mold plates are used for square / rectangular blooms or for slabs with larger Aspect ratio used. There are also special geometries, such as pre-profiles for double-T beams and thin slab molds with funnel extension in the upper one Plate area for receiving the pouring nozzle. It is characteristic of all these molds that homogeneous cooling of the surfaces is sought. Make the corner areas Special cases, since z. B. due to the design of plate molds with butt edges disturbed cooling are present. There are also areas with larger areas Given volumes of material for the rear fasteners that with Specially designed groove-like coolant channels with respect to the same Cooling can be adjusted again.

Ferner ist bekannt, thermisch besonders hoch beanspruchte Kokillen besser zu kühlen, um eine frühzeitige Schädigung der Kokille zu vermeiden. Das heißt für Dünnbrammenkokillen zum einen, daß der Wärmewiderstand der Kokillenwand nicht zu groß sein darf, weshalb dann geringere Wanddicken gewählt werden. Zum anderen werden bei den angestrebten höheren Gießgeschwindigkeiten besondere Ansprüche an die Kühlwasserqualität und die Kühlwassergeschwindigkeit gestellt.It is also known that molds that are particularly highly thermally stressed are better cool to avoid premature damage to the mold. That means for Thin slab molds on the one hand, that the thermal resistance of the mold wall is not may be too large, which is why smaller wall thicknesses are selected. On the other hand become special demands at the desired higher casting speeds the cooling water quality and the cooling water speed.

Mit allen genannten Maßnahmen verfolgt man dasselbe Ziel, eine möglichst gute, homogene Kühlung der Gießseite des Kokillenkörpers einzustellen. Mögliche bauartbedingte Störbereiche - wie an rückseitigen Kühlflächen - werden gegebenenfalls beseitigt, um wieder eine gleichmäßige Kühlung zu erhalten.With all of the measures mentioned, the same goal is pursued, the best possible, Set homogeneous cooling of the casting side of the mold body. Possible design-related Interference areas - such as on cooling surfaces on the back - may be eliminated to get an even cooling again.

Die lokalen Beanspruchungsbedingungen beim Einsatz von Trichterkokillenplatten sind zum einen betriebsbedingt. Sie werden gießseitig wesentlich bestimmt durch die Stahlsorte/Gießtemperatur, die Geschwindigkeit, die Schmier-/Kühlbedingungen des Gießpulvers, die Geometrie der Gießdüse und die zugehörige Strömung der Schmelze. Auf der anderen Seite bestimmen wasserseitig Kühlwasserqualität, Kühlwassermenge und Wassergeschwindigkeit die Kokillentemperaturen. Diese Größen sind teilweise bereits durch die Kokillenkonstruktion - wie mit der Geometrie der Kühlmittelkanäle - bestimmt.The local stress conditions when using funnel mold plates are on the one hand operational. They are essentially determined by on the casting side the type of steel / casting temperature, the speed, the lubrication / cooling conditions of the mold powder, the geometry of the pouring nozzle and the associated flow of the Melt. On the other hand, cooling water quality and cooling water quantity determine on the water side and water speed the mold temperatures. These sizes are partly due to the mold construction - as with the geometry of the Coolant channels - determined.

Durch zerstörende Prüfung zahlreicher Kokillenplatten aus dem Einsatz in verschiedenen Stahlwerken ist jedoch die tatsächliche Beanspruchung und auch die daraus resultierende Schädigung des Kokillenwerkstoffs eindeutig festzustellen. Auf Basis dieser Untersuchungen ist eine über der Breite des Meniskus' unterschiedliche Erweichung der Oberfläche bzw. des oberflächennahen Bereichs festzustellen.Through destructive testing of numerous mold plates from use in different Steelworks, however, is the actual stress and also the result the resulting damage to the mold material can be clearly determined. Based of these examinations is a different softening across the width of the meniscus the surface or the area near the surface.

So fällt die Härte von 100 % des Ausgangswerts im kritischen Bereich auf etwa 60 % ab, während auf derselben Höhe neben dem kritischen Bereich nur ein Abfall auf etwa 70 % der Ausgangshärte gemessen wird; der Randbereich der Kokillenplatte ist hierbei nicht betrachtet. Eine ähnliche Aussage zeigen Messungen in der Wanddicke nach Einsatz der Kokillenplatten; gleiche Materialerweichungen erstrecken sich im kritischen Bereich des Badspiegels auf etwa ein Drittel größere Tiefen im Vergleich zu unkritischen Bereichen.So the hardness drops from 100% of the initial value in the critical range to about 60% down, while at the same height next to the critical area only a drop on about 70% of the initial hardness is measured; the edge area of the mold plate is not considered here. A similar statement is shown by measurements in the wall thickness after using the mold plates; extend the same material softening in the critical area of the bath level to about a third greater depths in the Comparison to non-critical areas.

Dünnbrammen-Kokillen werden infolge verschiedener Einflüsse auf den Breitseitenwänden unterschiedlich stark beansprucht. Zu diesen Einflüssen zählen im wesentlichen:

  • eine hohe Strömungsgeschwindigkeit der Stahlschmelze; Turbulenzen der Schmelze beanspruchen insbesondere die Übergangsbereiche des Trichters in die planparallelen Seiten des Gießquerschnittes.
  • eine höhere mechanische Beanspruchung der im Trichterauslauf gebogenen Wand der Kupferplatte infolge thermischer Ausdehnung. Die resultierenden Spannungen sind hier an der Gießseite besonders hoch.
Thin slab molds are subjected to different loads due to various influences on the broad side walls. These influences essentially include:
  • a high flow rate of the molten steel; Turbulence of the melt particularly stresses the transition areas of the funnel into the plane-parallel sides of the casting cross-section.
  • a higher mechanical stress on the wall of the copper plate bent in the funnel outlet due to thermal expansion. The resulting stresses are particularly high here on the casting side.

Das führt zu besonders ausgeprägter Erweichung des Kokillenwerkstoffes in diesem Übergangsbereich des Trichters. Aufgrund der lokal relativ höheren Temperaturen und der auf die jeweilige Warmfestigkeit eines Werkstoff-Volumenelements bezogenen höheren Werkstoffbelastung erfolgt in diesem Oberflächenbereich frühzeitig Rißbildung. Diese Rißbildung kann dann aufgrund eines hier temperaturbedingt ausgeprägter ablaufenden Diffusionsvorgangs von Zn-Atomen aus dem Stahl in die Cu-Matrix eher stattfinden, weil die sich bildenden CuZn-Phasen eine harte und spröde Oberflächenschicht bilden, die eine höhere Rißfortschrittsgeschwindigkeit ermöglicht. This leads to a particularly pronounced softening of the mold material in it Transition area of the funnel. Because of the locally relatively higher temperatures and related to the respective heat resistance of a solid material element higher material load occurs early in this surface area Cracking. This crack formation can then be caused by temperature here pronounced diffusion process of Zn atoms from the steel into the Cu matrix tend to take place because the CuZn phases that form are hard and form brittle surface layer, which has a higher crack propagation speed enables.

Ausgehend vom Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Kokillenkörper zu schaffen, bei dem der Wärmestrom im Badspiegelbereich erhöht ist und die Gefahr von Rißbildungen in den thermisch und mechanisch höher beanspruchten Bereichen vermieden werden kann.Starting from the prior art, the invention is based on the object To create mold body, in which the heat flow in the bathroom mirror area increases is and the risk of cracking in the thermally and mechanically stressed Areas can be avoided.

Die Lösung dieser Aufgabe besteht nach der Erfindung in den im kennzeichnenden Teil des Anspruchs 1 aufgeführten Merkmalen. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved according to the invention in the characterizing Features listed in claim 1. Advantageous further developments of Invention are specified in the subclaims.

Kernpunkt der Erfindung bildet somit die Maßnahme, in den überkritisch beanspruchten Bereichen beidseitig des Trichters eine deutlich stärkere Kühlung des Kokillenkörpers einzustellen. Erfindungsgemäß wird vorgeschlagen, die Kühlleistung in diesen kritischen Bereichen vorzugsweise um 10 bis 20 % gegenüber den horizontalen Nachbarbereichen zu erhöhen. Kühlmittelkanäle können z. B. hier vorteilhaft enger gesetzt werden, so daß sich die gekühlte Fläche vergrößert. Alternativ lassen sich die Kühlmittelkanäle lokal auch näher an die Oberfläche bringen; in diesem Fall arbeitet man ungewöhnlicherweise mit unterschiedlichen - effektiv wirksamen - Kühlwanddicken über dem Kühlwasser. Ähnliches gilt für Kühlbohrungen. Außerdem lassen sich mit nutenartigen Kühlmittelkanälen ausgebildete Breitseitenplatten in den kritischen Bereichen des Trichterübergangs zusätzlich mit Kühlbohrungen versehen; auch hier erhöht sich überraschenderweise trotz geringer Wanddicke der Rißwiderstand des Kokillenwerkstoffs und damit die Gesamtlebensdauer der Kokillenplatte.The core point of the invention thus forms the measure in the supercritically claimed Areas on both sides of the funnel a significantly stronger cooling of the Adjust mold body. According to the invention, the cooling capacity is proposed in these critical areas preferably by 10 to 20% over the increase horizontal neighboring areas. Coolant channels can e.g. B. advantageous here be set closer so that the cooled area increases. Alternatively the coolant channels can also be brought closer to the surface locally; in this Case, one works unusually with different - effectively effective - cooling wall thicknesses above the cooling water. The same applies to cooling holes. In addition, wide side plates can be formed with groove-like coolant channels in the critical areas of the funnel transition with additional cooling holes Mistake; here too surprisingly increases despite less Wall thickness the crack resistance of the mold material and thus the total service life the mold plate.

Darüber hinaus erreicht man mit rückseitig verschiedenen Kühlintensitäten einen deutlich besser ausgeglichenen Temperaturverlauf an der Gießseite der Plattenoberfläche. Dieser Effekt ermöglicht ein kleineres Temperaturintervall für einen sinnvollen, engeren Arbeitstemperaturbereich des Gießpulvers. Damit kann die Abstimmung des Gießpulvers auf einen kälteren oder heißeren Temperaturbereich vermieden werden. In addition, one achieves one with different cooling intensities on the back significantly better balanced temperature curve on the casting side of the plate surface. This effect allows a smaller temperature interval for one reasonable, narrower working temperature range of the mold powder. So that the vote the mold powder to a colder or hotter temperature range be avoided.

Die Erfindung ist nachfolgend anhand von in den Zeichnungen dargestellten Ausführungsbeispielen noch näher erläutert.The invention is based on the embodiments shown in the drawings explained in more detail.

Die in Figur 1 dargestellte Trichterkokillenplatte 1 weist am horizontalen Auslauf (vertikale Linie C) des Trichters 2 gießseitig die höchste thermische Beanspruchung auf. Als direkte Folge ergibt sich ein bei C in Gießrichtung GR direkt unterhalb des Badspiegels 3 liegender maximaler flächenbezogener Wärmestrom von 4,7 bis 5,2 MW/m2. Es liegen rechnerisch ermittelte maximale Temperaturen von etwa 400 ° C an der Gießseite 4 der Kokillenplatte 1 vor. Die effektiv wirksame Wanddicke d der Kokillenplatte 1 aus Kupfer wird nun im kritischen Bereich 5 zwischen den Linien B, C, D auf den oberen 200 mm der Kokillenplatte von d1 = 20 mm auf d2 = 18 mm verringert (Fig. 2).The funnel mold plate 1 shown in FIG. 1 has the highest thermal stress at the horizontal outlet (vertical line C) of the funnel 2 on the casting side. As a direct result, there is a maximum area-related heat flow of 4.7 to 5.2 MW / m 2 at C in the casting direction GR directly below the bath level 3. There are arithmetically determined maximum temperatures of approximately 400 ° C. on the casting side 4 of the mold plate 1. The effective wall thickness d of the mold plate 1 made of copper is now reduced in the critical area 5 between lines B, C, D on the upper 200 mm of the mold plate from d 1 = 20 mm to d 2 = 18 mm (FIG. 2).

Damit wird eine um 28 ° C verringerte maximale Oberflächentemperatur eingestellt; diese bevorzugte Kühlung bleibt bei entsprechender Nacharbeit der Kokillenplatte 1 erhalten. Obwohl die Wanddicke d2 im kritisch beanspruchten Bereich 5 um 2 mm geringer ist, kommt es einschließlich Nacharbeiten überraschenderweise dennoch zu einer insgesamt höheren Lebensdauer der Kokillenplatten 1. Der mit tiefer eingebrachten Kühlnuten 6 (Wanddicke zwischen Gieß- und Kühlfläche 18 mm statt 20 mm) intensiver gekühlte Bereich 5 erstreckt sich im vorliegenden Fall über folgende Flächen (siehe Fig. 1): Länge horizontal ab dem Wendepunkt B des Trichters 2 über 370 mm bis zum Endpunkt D. Die intensivere Kühlfläche erstreckt sich von der Plattenoberkante 7 bis 200 mm in Gießrichtung GR; es schließt sich eine Übergangszone 8 von 50 mm an, in der die Tiefe d der Kühlnuten 6 angeglichen wird.This sets a maximum surface temperature reduced by 28 ° C; this preferred cooling is retained when the mold plate 1 is reworked accordingly. Although the wall thickness d 2 in the critically stressed area 5 is 2 mm less, including reworking, surprisingly there is an overall longer service life for the mold plates 1. The cooling grooves 6 which are introduced more deeply (wall thickness between casting and cooling surface 18 mm instead of 20 mm) Intensively cooled area 5 extends in the present case over the following areas (see FIG. 1): Length horizontally from the turning point B of the funnel 2 over 370 mm to the end point D. The more intensive cooling area extends from the top edge of the plate 7 to 200 mm in the casting direction GR; this is followed by a transition zone 8 of 50 mm, in which the depth d of the cooling grooves 6 is adjusted.

Claims (12)

Flüssigkeitsgekühlte Kokille für eine Stranggießanlage mit einem formgebenden Kokillenkörper aus einem Material hoher Wärmeleitfähigkeit, wie Kupfer oder einer Kupferlegierung, dadurch gekennzeichnet, daß der Kokillenkörper kühlflächenseitig in den thermisch und mechanisch höher beanspruchten Bereichen eine Kühlzone mit höherem flächenbezogenen Wärmestrom aufweist.Liquid-cooled mold for a continuous caster with a mold body made of a material with high thermal conductivity, such as copper or a copper alloy, characterized in that the mold body has a cooling zone with a higher area-related heat flow in the areas subject to higher thermal and mechanical stresses on the cooling surface side. Kokille nach Anspruch 1, dadurch gekennzeichnet, daß sie einen Formhohlraum aufweist, der aus zwei einander gegenüberliegenden Breitseitenwänden und die Strangbreite begrenzenden Schmalseitenwänden besteht.Chill mold according to claim 1, characterized in that it has a mold cavity which consists of two opposite broad side walls and narrow side walls delimiting the strand width. Kokille nach Anspruch 2, dadurch gekennzeichnet, daß der Querschnitt des Formhohlraums am eingießseitigen Ende größer ist als am strangaustrittsseitigen Ende.Mold according to claim 2, characterized in that the cross section of the mold cavity is larger at the end on the pouring side than at the end on the strand exit side. Kokille nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Formhohlraum am eingießseitigen Ende wenigstens eine Ausbauchung besitzt, die sich in Gießrichtung (GR) verkleinern kann.Chill mold according to claim 2 or 3, characterized in that the mold cavity has at least one bulge at the end on the pouring side, which bulge can decrease in the casting direction (GR). Kokille nach einer der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Kühlzone mit höherem flächenbezogenen Wärmestrom im Badspiegelbereich angeordnet ist, wobei sie sich auf mindestens 20 %, vorzugsweise 30 bis 60 % der Meniskuslänge der Breitseitenwand erstreckt. Chill mold according to one of claims 1 to 4, characterized in that the cooling zone is arranged with a higher area-related heat flow in the area of the bathroom mirror, it extending to at least 20%, preferably 30 to 60% of the meniscus length of the broad side wall. Kokille nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der flächenbezogene Wärmestrom im höher beanspruchten Bereich des Badspiegels um 5 bis 40 %, vorzugsweise um 10 bis 20 % größer ist als in den übrigen Bereichen des Badspiegels.Chill mold according to one of claims 1 to 5, characterized in that the area-related heat flow in the area of the bath level which is subject to greater stress is greater by 5 to 40%, preferably by 10 to 20%, than in the other areas of the bath level. Kokille nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Wanddicke zwischen Gieß- und Kühlfläche in den thermisch und mechanisch höher beanspruchten Bereichen der Breitseitenwände verringert ist.Chill mold according to one of claims 1 to 6, characterized in that the wall thickness between the casting and cooling surface is reduced in the regions of the broad side walls which are subjected to greater thermal and mechanical stress. Kokille nach Anspruch 7, dadurch gekennzeichnet, daß die Wandung zwischen Gieß- und Kühlfläche im Badspiegelbereich eine um 1 bis 6 mm verringerte Dicke aufweist.Chill mold according to claim 7, characterized in that the wall between the pouring and cooling surface in the bath level area has a thickness reduced by 1 to 6 mm. Kokille nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Kokillenkörper parallel zur Gießrichtung verlaufende nutenartige Kühlmittelkanäle und/oder Kühlbohrungen aufweist, die in den thermisch und mechanisch höher beanspruchten Bereichen enger angeordnet sind.Chill mold according to one of Claims 1 to 8, characterized in that the chill mold body has groove-like coolant channels and / or cooling bores which run parallel to the casting direction and are arranged more closely in the regions which are subject to greater thermal and mechanical stress. Kokille nach Anspruch 9, dadurch gekennzeichnet, daß der Abstand der Kühlmittelkanäle und/oder Kühlbohrungen in dem thermisch und mechanisch höher beanspruchten Bereichen um mindestens 20 % geringer ist als in den horizontalen Nachbarbereichen des Badspiegels.Chill mold according to claim 9, characterized in that the distance between the coolant channels and / or cooling bores in the thermally and mechanically higher stressed areas is at least 20% less than in the horizontal adjacent areas of the bath level. Kokille nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß die Kühlmittelkanäle und/oder Kühlbohrungen in einem Übergangsbereich stufenweise enger angeordnet sind.Chill mold according to one of claims 9 or 10, characterized in that the coolant channels and / or cooling bores are gradually arranged narrower in a transition region. Kokille nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß zwischen den Kühlmittelkanälen zusätzliche Kühlbohrungen angeordnet sind.Mold according to one of claims 9 to 11, characterized in that additional cooling bores are arranged between the coolant channels.
EP99100854A 1998-01-27 1999-01-19 Fluid cooled mould Expired - Lifetime EP0931609B1 (en)

Priority Applications (1)

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DK99100854T DK0931609T3 (en) 1998-01-27 1999-01-19 The liquid-cooled coconut

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DE19802809 1998-01-27
DE19802809A DE19802809A1 (en) 1998-01-27 1998-01-27 Liquid-cooled mold

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EP0931609A1 true EP0931609A1 (en) 1999-07-28
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DE10226214A1 (en) * 2002-06-13 2003-12-24 Sms Demag Ag Continuous casting mold for liquid metals, especially for liquid steel
DE10337205A1 (en) * 2003-08-13 2005-03-10 Km Europa Metal Ag Liquid-cooled mold
DE102004021899A1 (en) * 2004-05-04 2005-12-01 Sms Demag Ag Chilled continuous casting mold
EP1785206A1 (en) * 2005-11-10 2007-05-16 Siemens Aktiengesellschaft Method and apparatus for cooling a continuous casting mould by steam
DE102006036708A1 (en) * 2006-08-05 2008-02-07 Sms Demag Ag Continuous casting mold for liquid metals, in particular for liquid steel materials
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US10350674B2 (en) 2017-06-12 2019-07-16 Wagstaff, Inc. Dynamic mold shape control for direct chill casting
US11883876B2 (en) 2017-06-12 2024-01-30 Wagstaff, Inc. Dynamic mold shape control for direct chill casting
DE102018123948B3 (en) * 2018-09-27 2019-09-12 Kme Germany Gmbh & Co. Kg mold plate
CN109822065B (en) * 2019-04-11 2024-03-22 安徽工业大学 Wide-surface copper plate of continuous casting crystallizer and continuous casting crystallizer with same
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KR19990068007A (en) 1999-08-25
JPH11267794A (en) 1999-10-05
PT931609E (en) 2005-01-31
US6926067B1 (en) 2005-08-09
PL194641B1 (en) 2007-06-29
ES2230749T3 (en) 2005-05-01
AU1322099A (en) 1999-08-19
ATE283132T1 (en) 2004-12-15
EP0931609B1 (en) 2004-11-24
DK0931609T3 (en) 2005-03-29
AU756323B2 (en) 2003-01-09
CZ300075B6 (en) 2009-01-21
RU2240892C2 (en) 2004-11-27
PL331035A1 (en) 1999-08-02
TW448081B (en) 2001-08-01
ZA99141B (en) 1999-07-09
BR9900188A (en) 2000-01-04
DE19802809A1 (en) 1999-07-29
CA2258451C (en) 2005-03-29
DE59911117D1 (en) 2004-12-30
CN1227778A (en) 1999-09-08
AR014307A1 (en) 2001-02-07
CZ26399A3 (en) 2000-05-17
CA2258451A1 (en) 1999-07-27
KR100566741B1 (en) 2006-04-03

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