EP2121218A1 - Continuous casting die with coolant channel - Google Patents
Continuous casting die with coolant channelInfo
- Publication number
- EP2121218A1 EP2121218A1 EP07847053A EP07847053A EP2121218A1 EP 2121218 A1 EP2121218 A1 EP 2121218A1 EP 07847053 A EP07847053 A EP 07847053A EP 07847053 A EP07847053 A EP 07847053A EP 2121218 A1 EP2121218 A1 EP 2121218A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbulence
- continuous casting
- generating elements
- mold
- wall
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
Definitions
- the invention relates to a continuous casting mold with a coolant channel which is formed by a, the molten metal facing mold inner wall as a hot side, a mold outer wall as a cold side and a right and left side wall.
- a mold wall of a continuous casting mold which consists of a Kokilleninnenplatte and one connected to the Kokilleninnenplatte via screw connections water tank, wherein the mold inner plate on its side facing the water tank webs with grooves extending therebetween, are arranged in the filling pieces ,
- the grooves serve as cooling channels for a cooling liquid, usually water.
- the patches serve to reduce the channel cross-section, so that the speed of dilution of the cooling liquid in the cooling channel increases.
- Continuous casting molds with cooling channels are furthermore known from the documents DE 101 22 618 A1, DE 100 35 737 A1 and DE 101 38 988 C2.
- a mold for the continuous casting of molten metals, in particular steel is known, with cooling channels such as cooling grooves, cooling slots or cooling holes in the Kokillenh designedseite opposite contact surface.
- the heat transfer of the mold is improved in that the geometric configurations of the heat-transmitting surfaces of a cooling channel or a group of cooling channels in shape, cross-sectional area, circumference, interface properties, orientation to the contact surface, arrangement and / or arrangement density compared to the contact surface of the local formation of heat flux density and / or temperature of the con- contact surface in the casting operation, and in particular in GittyLite Kunststoffe adapted.
- the liquid melt flows from a continuous casting distributor through a dip tube into an oscillating, water-cooled copper mold.
- the melt temperature drops below the solidus temperature and it forms a thin strand shell, which is withdrawn in the casting direction.
- the thickness of the strand shell increases until the strand is completely solidified.
- casting speeds of 6 m / min and more are achieved today.
- Typical local heat flux densities are on the order of up to 12 MW / qm.
- the dissipated by the coolant heat flow is u. a.
- the wall roughness and the flow rate and thus also on the degree of turbulence.
- the higher the degree of turbulence on the coolant side the more intense the mixing and the more heat is dissipated.
- the heat-transferring area can be increased, however, this enlargement has narrow limits.
- fouling Since the deposits have a very low thermal conductivity, fouling in the case of Kokillenkühlung leads to a strong increase in the copper temperature and thus to a reduced service life of the mold.
- the invention has for its object to provide a continuous casting mold, in which the recrystallization process of the mold material or the material of the walls of the coolant channel, which is dependent on the operating temperature and operating time is delayed, the life of the mold and the turbulence increases and a homogeneous Mixing of the coolant is achieved.
- the coolant channel is formed with turbulence generating elements.
- turbulence-generating elements By introducing turbulence-generating elements is generally achieved a greater mixing of the coolant.
- the turbulence-generating elements increase the heat-transferring area of the coolant channel or of the mold walls. The interaction of both measures, i. Turbulence generation and enlargement of the heat transfer surface, improves the local heat transfer from the walls of the coolant channel or from its walls to the coolant, which then dissipates the heat.
- the basic principle of all turbulence generating elements is based on the turbulence-induced mass impulse and energy transport.
- the heat transfer in the coolant channel of continuous casting molds is improved according to the invention.
- the turbulence generators lead to higher local heat flow densities, ie the heat dissipated per unit area is increased.
- the turbulence, both near the wall and in the area of the core flow, is increased and a homogeneous mixing is achieved.
- the turbulence-generating elements a better mixing of the cooling water is achieved and the temperature level in the copper is lowered, whereby the dependent on the operating temperature and duration recrystallization process of the mold material or the material of the walls of the coolant channel delays.
- the material of the mold or the mold walls is for example copper, partially copper or another material. Furthermore, the contamination and the tendency to deposit are reduced by the increased turbulence and the greater shear forces on the hot side of the cooling channel.
- a first embodiment of turbulence-generating elements consists of horizontal steps in the coolant formed, for example, by rectangular profiles extending over the entire width or portions of the coolant channel.
- a second and third embodiment of turbulence generating elements is in the form of tetrahedrons and winglets. In these forms, inwardly rotating swirl pegs are induced, which lead to an even more intensive mixing of the coolant. Vortex pegs can be observed for example at the end of a wing profile or behind motor vehicles, where they are in principle undesirable.
- the turbulence-generating elements are arranged offset one after the other on the hot side, for example, the distance being largely determined by the spatial extent of the upstream recirculation area.
- the turbulence-generating elements can also be installed on the cold side, since the effect of the recirculation extends to the hot side.
- a combination of tetrahedrons on the cold side and horizontally mounted steps on the hot side of the coolant channel is also possible. It is also conceivable to install the turbulence-generating elements only in the entry of a coolant channel or only at the level of the casting mirror in order to keep the manufacturing effort within limits.
- the heat transfer surface is through the turbulence elements slightly increased, in the tetrahedra described by about 6%. In this way, the local heat flux density is increased. Due to the dimensions of the turbulence elements not too large, the pressure loss can be kept low.
- the basic mode of operation of the coolant channel according to the invention can be demonstrated by means of numerical flow simulations (CFD - Computational Fluid Dynamics).
- Figure 1 in a spatial representation of a part of a continuous casting mold.
- FIG. 2 is a sectional front view of the continuous casting mold with turbulence-generating elements according to a first embodiment
- FIG. 3 is a sectional front view of the continuous casting mold with turbulence-generating elements according to a second embodiment
- FIG. 5 shows a sectional side view of the continuous casting mold with turbulence-generating elements.
- Figure 1 shows a spatial representation of a part of a continuous casting mold 1 with a coolant channel 2, the one facing the molten metal, mold inner wall 3 as a hot side, a mold outer wall 4 as Cold side and a right side wall 5 and a left side wall 6 is formed.
- turbulence-generating elements 7, 9 and 10 are mounted on the mold inner wall 3, the hot side, and protrude into the coolant channel 2.
- FIG. 2 shows, in a sectional front view, the coolant channel 2 in which 11 turbulence-generating elements 7 in the form of tetrahedrons are mounted on the mold inner wall 3 in two rows.
- the tetrahedra point with their tip counter to the flow direction 8. By such an arrangement, a building resistance is generated. Behind the tetrahedron, the coolant behaves turbulently.
- the tetrahedra can also be arranged offset.
- FIG. 3 shows turbulence-generating elements 9 in the form of horizontal steps.
- the horizontal steps are formed, for example, by a rectangular bar (see FIG. 5) which extends over the entire width of the coolant channel 2.
- FIG. 10 Another form of the turbulence-generating elements 10 is shown in FIG. These turbulence generating elements 10 are in the form of winglets. These, e.g. Winglets known from aircraft wings are either aligned one behind the other in rows 11 fixed to the mold inner wall 3 or are distributed on the mold inner wall, as indicated by the lowermost winglet.
- Winglets known from aircraft wings are either aligned one behind the other in rows 11 fixed to the mold inner wall 3 or are distributed on the mold inner wall, as indicated by the lowermost winglet.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a continuous casting die (1) with a coolant channel (2), which is formed by an inner wall of the die (3) as the hot side, the wall facing the molten metal, an outer wall of the die (4) as the cold side, and a right side wall (5) and a left side wall (6). The coolant channel (2) is provided with turbulence-creating elements (7, 9, 10).
Description
Stranggießkokille mit Kühlmittelkanal Continuous casting mold with coolant channel
Die Erfindung betrifft eine Stranggießkokille mit einem Kühlmittelkanal, der durch eine, dem schmelzflüssigen Metall zugewandte Kokilleninnenwand als Heißseite, eine Kokillenaußenwand als Kaltseite und einer rechten und linken Seitenwand gebildet wird.The invention relates to a continuous casting mold with a coolant channel which is formed by a, the molten metal facing mold inner wall as a hot side, a mold outer wall as a cold side and a right and left side wall.
Aus der DE 198 26 522 A1 ist eine Kokillenwand einer Stranggießkokille bekannt, die aus einer Kokilleninnenplatte und einem mit der Kokilleninnenplatte über Schraubverbindungen verbundenen Wasserkasten besteht, wobei die Kokilleninnenplatte auf ihrer dem Wasserkasten zugewandten Seite Stege mit dazwischen verlaufenden Nuten aufweist, in den Füllstücke angeordnet sind. Die Nuten dienen dabei als Kühlkanäle für eine Kühlflüssigkeit, in der Regel Wasser. Die Füllstücke dienen der Verringerung des Kanalquerschnitts, so dass sich die Fleißgeschwindigkeit der Kühlflüssigkeit im Kühlkanal erhöht.From DE 198 26 522 A1 a mold wall of a continuous casting mold is known, which consists of a Kokilleninnenplatte and one connected to the Kokilleninnenplatte via screw connections water tank, wherein the mold inner plate on its side facing the water tank webs with grooves extending therebetween, are arranged in the filling pieces , The grooves serve as cooling channels for a cooling liquid, usually water. The patches serve to reduce the channel cross-section, so that the speed of dilution of the cooling liquid in the cooling channel increases.
Die DE 198 42 674 A1 beschreibt ähnliche Füllstücke.DE 198 42 674 A1 describes similar patches.
Stranggießkokillen mit Kühlkanälen sind weiterhin aus den Dokumenten DE 101 22 618 A1 , DE 100 35 737 A1 und DE 101 38 988 C2 bekannt.Continuous casting molds with cooling channels are furthermore known from the documents DE 101 22 618 A1, DE 100 35 737 A1 and DE 101 38 988 C2.
Aus der DE 102 53 735 A1 ist eine Kokille zum Stranggießen von schmelzflüssigen Metallen, insbesondere von Stahl bekannt, mit Kühlkanälen wie Kühlnuten, Kühlschlitzen oder Kühlbohrungen in der der Kokillenheißseite gegenüberliegenden Kontaktfläche. Der Wärmeübergang der Kokille wird dadurch verbessert, dass die geometrischen Ausgestaltungen der wärmeübertragenden Flächen eines Kühlkanals oder einer Gruppe von Kühlkanälen in Form, Querschnittsfläche, Umfang, Grenzflächenbeschaffenheit, Orientierung zur Kontaktfläche, Anordnung und/oder Anordnungsdichte gegenüber der Kontaktfläche der lokalen Ausbildung von Wärmestromdichte und/oder Temperatur der Kon-
taktfläche im Gießbetrieb, und insbesondere im Gießspiegelbereich, angepasst wird.From DE 102 53 735 A1 a mold for the continuous casting of molten metals, in particular steel is known, with cooling channels such as cooling grooves, cooling slots or cooling holes in the Kokillenheißseite opposite contact surface. The heat transfer of the mold is improved in that the geometric configurations of the heat-transmitting surfaces of a cooling channel or a group of cooling channels in shape, cross-sectional area, circumference, interface properties, orientation to the contact surface, arrangement and / or arrangement density compared to the contact surface of the local formation of heat flux density and / or temperature of the con- contact surface in the casting operation, and in particular in Gießspiegelbereich adapted.
Beim Stranggießen fließt die flüssige Schmelze aus einem Stranggießverteiler durch ein Tauchrohr in eine oszillierende, wassergekühlte Kupferkokille. Infolge der Wärmeabfuhr sinkt die Schmelzentemperatur unter die Solidustemperatur und es bildet sich eine dünne Strangschale, die in Gießrichtung abgezogen wird. Mit zunehmender Abkühlung wächst die Dicke der Strangschale an, bis der Strang vollständig erstarrt ist. Je nach Format und Anzahl der Stränge werden heute Gießgeschwindigkeiten von 6 m/min und mehr erreicht. Typische lokale Wärmestromdichten liegen in der Größenordnung von bis zu 12 MW/qm.In continuous casting, the liquid melt flows from a continuous casting distributor through a dip tube into an oscillating, water-cooled copper mold. As a result of the heat dissipation, the melt temperature drops below the solidus temperature and it forms a thin strand shell, which is withdrawn in the casting direction. With increasing cooling, the thickness of the strand shell increases until the strand is completely solidified. Depending on the format and number of strands, casting speeds of 6 m / min and more are achieved today. Typical local heat flux densities are on the order of up to 12 MW / qm.
Der vom Kühlmittel abgeführte Wärmestrom ist u. a. abhängig von der Geometrie der Kühlmittelkanäle, der Wandrauhigkeit sowie der Durchströmgeschwindigkeit und damit auch vom Turbulenzgrad. Je höher der Turbulenzgrad auf der Kühlmittelseite, desto intensiver ist die Durchmischung und umso mehr Wärme wird abgeführt. Zwar lässt sich die wärmeübertragende Fläche vergrößern, jedoch sind dieser Vergrößerung enge Grenzen gesetzt. Besonders bei sehr hohen Wärmestromdichten tritt häufig eine Verschmutzung der wärmeübertragenden Flächen durch Ablagerungen auf, das so genannte Fouling. Da die Ablagerungen eine sehr niedrige Wärmeleitfähigkeit besitzen, führt Fouling im Fall der Kokillenkühlung zu einer starken Erhöhung der Kupfertemperatur und damit zu einer verminderten Standzeit der Kokille.The dissipated by the coolant heat flow is u. a. Depending on the geometry of the coolant channels, the wall roughness and the flow rate and thus also on the degree of turbulence. The higher the degree of turbulence on the coolant side, the more intense the mixing and the more heat is dissipated. Although the heat-transferring area can be increased, however, this enlargement has narrow limits. Especially at very high heat flux densities often occurs contamination of the heat-transferring surfaces by deposits, the so-called fouling. Since the deposits have a very low thermal conductivity, fouling in the case of Kokillenkühlung leads to a strong increase in the copper temperature and thus to a reduced service life of the mold.
Konventionelle Stranggießkokillen werden mit rechteckigen Kühlmittelkanälen ausgebildet, die mit Strömungsgeschwindigkeiten von etwa 10 m/s durchströmt werden. In diesen Kühlmittelkanälen bildet sich bei Reynolds-Zahlen von ca. 250.000 eine turbulente Strömung mit einer Hauptkomponenten in axialer Richtung aus. Die Grundturbulenz führt zu einem erhöhten Massen-, Impuls- und Energieaustausch zwischen den einzelnen Kühlmittelschichten. In Wandnähe bilden sich Strömungs- und Temperaturgrenzschichten aus, die sich durch so genannte logarithmische Wandgesetze beschreiben lassen. Mit zunehmender
Annäherung an die Wand wird die Turbulenz gedämpft. Der Hauptnachteil der konventionellen Kühlung besteht in der gerichteten Turbulenz mit überwiegenden Anteilen in axialer Strömungsrichtung und niedrigeren Anteilen in radialer Strömungsrichtung.Conventional continuous casting molds are formed with rectangular coolant channels through which flow rates of about 10 m / s flow. In these coolant channels, at Reynolds numbers of approximately 250,000, a turbulent flow with one major component in the axial direction is formed. The basic turbulence leads to an increased mass, momentum and energy exchange between the individual coolant layers. Near the wall flow and temperature boundary layers are formed, which can be described by so-called logarithmic laws of the wall. With increasing Approaching the wall, the turbulence is damped. The main drawback of conventional cooling is directional turbulence with predominant proportions in the axial flow direction and lower proportions in the radial flow direction.
Der Erfindung liegt die Aufgabe zugrunde, eine Stranggießkokille anzugeben, bei der der Rekristallisationsprozess des Kokillenmaterials bzw. das Material der Wände des Kühlmittelkanals, der von der Betriebstemperatur und der Betriebsdauer abhängig ist, verzögert wird, die Standzeit der Kokille und die Turbulenz erhöht und eine homogene Durchmischung des Kühlmittels zu erzielt wird.The invention has for its object to provide a continuous casting mold, in which the recrystallization process of the mold material or the material of the walls of the coolant channel, which is dependent on the operating temperature and operating time is delayed, the life of the mold and the turbulence increases and a homogeneous Mixing of the coolant is achieved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei einer Stranggießkokille mit einem Kühlmittelkanal, der durch eine, dem schmelzflüssigen Metall zugewandten, Kokilleninnenwand als Heißseite, einer Kokillenaußenwand als Kaltseite und einer rechten und einer linken Seitenwand gebildet ist, der Kühlmittelkanal mit turbulenzerzeugenden Elementen ausgebildet ist. Durch das Einbringen von turbulenzerzeugenden Elementen wird generell eine stärkere Durchmischung des Kühlmittels erzielt. Gleichzeitig vergrößern die turbulenzerzeugenden Elemente die wärmeübertragende Fläche des Kühlmittelkanals bzw. der Kokillenwände. Das Zusammenwirken beider Maßnahmen, d.h. Turbulenzerzeugung und Vergrößerung der wärmeübertragenden Fläche, verbessert den lokalen Wärmeübergang von den Wänden des Kühlmittelkanals bzw. von dessen Wänden auf das Kühlmittel, welches dann die Wärme ableitet.This object is achieved in that in a continuous casting mold with a coolant channel, which is formed by one, the molten metal facing, Kokilleninnenwand as a hot side, a Kokillenaußenwand as a cold side and a right and a left and left side wall, the coolant channel is formed with turbulence generating elements. By introducing turbulence-generating elements is generally achieved a greater mixing of the coolant. At the same time, the turbulence-generating elements increase the heat-transferring area of the coolant channel or of the mold walls. The interaction of both measures, i. Turbulence generation and enlargement of the heat transfer surface, improves the local heat transfer from the walls of the coolant channel or from its walls to the coolant, which then dissipates the heat.
Das Grundprinzip aller turbulenzerzeugenden Elemente basiert auf dem turbulenzinduzierten Massen- Impuls- und Energietransport. Der Wärmeübergang im Kühlmittelkanal von Stranggießkokillen wird erfindungsgemäß verbessert. Infolge der intensiveren Durchmischung führen die Turbulenzerzeuger zu höheren lokalen Wärmestromdichten, d.h. die pro Flächeneinheit abgeführte Wärme wird vergrößert. Die Turbulenz, sowohl in Wandnähe als auch im Bereich der Kernströmung, wird erhöht und eine homogene Durchmischung erzielt. Durch die
turbulenzerzeugenden Elemente wird eine bessere Durchmischung des Kühlwassers erreicht und das Temperaturniveau im Kupfer wird abgesenkt, wobei sich der von der Betriebstemperatur und -dauer abhängige Rekristallisations- prozess des Kokillenmaterials bzw. des Materials der Wände des Kühlmittelkanals verzögert. Dieses führt zu einer Erhöhung der Standzeit der Kokille. Das Material der Kokille bzw. der Kokillenwände ist beispielsweise Kupfer, teilweise Kupfer oder ein anderes Material. Weiterhin werden die Verschmutzung und die Ablagerungsneigung durch die erhöhte Turbulenz und die größeren Scherkräfte an der Heißseite des Kühlkanals vermindert.The basic principle of all turbulence generating elements is based on the turbulence-induced mass impulse and energy transport. The heat transfer in the coolant channel of continuous casting molds is improved according to the invention. As a result of the more intensive mixing, the turbulence generators lead to higher local heat flow densities, ie the heat dissipated per unit area is increased. The turbulence, both near the wall and in the area of the core flow, is increased and a homogeneous mixing is achieved. By the turbulence-generating elements, a better mixing of the cooling water is achieved and the temperature level in the copper is lowered, whereby the dependent on the operating temperature and duration recrystallization process of the mold material or the material of the walls of the coolant channel delays. This leads to an increase in the service life of the mold. The material of the mold or the mold walls is for example copper, partially copper or another material. Furthermore, the contamination and the tendency to deposit are reduced by the increased turbulence and the greater shear forces on the hot side of the cooling channel.
An der Hinterkante der turbulenzerzeugenden Elemente reißt die Wasserströmung ab und es bildet sich ein instationäres und verwirbeltes, d.h. turbulentes Rezirkulationsgebiet. Eine erste Ausführung von turbulenzerzeugenden Elementen besteht aus horizontalen Stufen im Kühlmittel, die beispielsweise von rechteckigen Profilen gebildet werden, die sich über die gesamte Breite oder Teilbereiche des Kühlmittelkanals erstrecken. Eine zweite und dritte Ausführung von turbulenzerzeugenden Elementen besitzt die Form von Tetraedern und Winglets. Bei diesen Formen werden einwärts drehende Wirbelzöpfe induziert, die zu einer noch intensiveren Durchmischung des Kühlmittels führen. Wirbelzöpfe lassen sich beispielsweise am Ende eines Tragflügelprofils oder hinter Kraftfahrzeugen beobachten, wo sie prinzipiell unerwünscht sind. Die turbulenzerzeugenden Elemente werden auf der Heißseite beispielsweise hintereinander versetzt angeordnet, wobei der Abstand maßgeblich durch die räumliche Ausdehnung des stromauf liegenden Rezirkulationsgebietes bestimmt wird. Alternativ können die turbulenzerzeugenden Elemente auch auf der Kaltseite installiert werden, da die Auswirkung der Rezirkulation sich bis zur Heißseite erstreckt. Auch eine Kombination aus Tetraedern auf der Kaltseite und horizontal angebrachten Stufen auf der Heißseite des Kühlmittelkanals ist möglich. Ebenso ist denkbar, die turbulenzerzeugenden Elemente lediglich im Eintritt eines Kühlmittelkanals oder nur in Höhe des Gießspiegels zu installieren, um den fertigungstechnischen Aufwand in Grenzen zu halten. Zusätzlich zu den genannten strömungstechnischen Effekten wird die wärmeübertragende Fläche durch
die Turbulenzelemente etwas erhöht, bei den beschriebenen Tetraedern um ca. 6%. Auf diese Weise wird auch die lokale Wärmestromdichte vergrößert. Durch die nicht zu groß gewählten Abmessungen der Turbulenzelemente kann der Druckverlust gering gehalten werden.At the trailing edge of the turbulence-generating elements, the water flow breaks off and a transient and turbulent, ie turbulent, recirculation area forms. A first embodiment of turbulence-generating elements consists of horizontal steps in the coolant formed, for example, by rectangular profiles extending over the entire width or portions of the coolant channel. A second and third embodiment of turbulence generating elements is in the form of tetrahedrons and winglets. In these forms, inwardly rotating swirl pegs are induced, which lead to an even more intensive mixing of the coolant. Vortex pegs can be observed for example at the end of a wing profile or behind motor vehicles, where they are in principle undesirable. The turbulence-generating elements are arranged offset one after the other on the hot side, for example, the distance being largely determined by the spatial extent of the upstream recirculation area. Alternatively, the turbulence-generating elements can also be installed on the cold side, since the effect of the recirculation extends to the hot side. A combination of tetrahedrons on the cold side and horizontally mounted steps on the hot side of the coolant channel is also possible. It is also conceivable to install the turbulence-generating elements only in the entry of a coolant channel or only at the level of the casting mirror in order to keep the manufacturing effort within limits. In addition to the fluidic effects mentioned the heat transfer surface is through the turbulence elements slightly increased, in the tetrahedra described by about 6%. In this way, the local heat flux density is increased. Due to the dimensions of the turbulence elements not too large, the pressure loss can be kept low.
Die prinzipielle Funktionsweise der erfindungsgemäßen Kühlmittelkanals kann anhand numerischer Strömungssimulationen (CFD - Computational Fluid Dynamics) belegt werden.The basic mode of operation of the coolant channel according to the invention can be demonstrated by means of numerical flow simulations (CFD - Computational Fluid Dynamics).
Ausführungsbeispiele der Erfindung werden anhand von sehr schematischen Zeichnungen näher beschrieben.Embodiments of the invention will be described in more detail with reference to very schematic drawings.
Fig. 1 in räumlicher Darstellung einen Teil einer Stranggießkokille;Figure 1 in a spatial representation of a part of a continuous casting mold.
Fig. 2 in geschnittener Vorderansicht die Stranggießkokille mit turbulenzerzeugenden Elementen gemäß einer ersten Ausführung;2 is a sectional front view of the continuous casting mold with turbulence-generating elements according to a first embodiment;
Fig. 3 in geschnittener Vorderansicht die Stranggießkokille mit turbulenzerzeugenden Elementen gemäß einer zweiten Ausführung;3 is a sectional front view of the continuous casting mold with turbulence-generating elements according to a second embodiment;
Fig. 4 in geschnittener Vorderansicht die Stranggießkokille mit turbulenzerzeugenden Elementen gemäß einer dritten Ausführung; und4 shows a sectional front view of the continuous casting mold with turbulence-generating elements according to a third embodiment; and
Fig. 5 in geschnittener Seitenansicht die Stranggießkokille mit turbulenzerzeugenden Elementen.5 shows a sectional side view of the continuous casting mold with turbulence-generating elements.
Figur 1 zeigt in räumlicher Darstellung einen Teil einer Stranggießkokille 1 mit einem Kühlmittelkanal 2, der durch eine, dem schmelzflüssigen Metall zugewandten, Kokilleninnenwand 3 als Heißseite, einer Kokillenaußenwand 4 als
Kaltseite und einer rechten Seitenwand 5 und einer linken Seitenwand 6 gebildet ist.Figure 1 shows a spatial representation of a part of a continuous casting mold 1 with a coolant channel 2, the one facing the molten metal, mold inner wall 3 as a hot side, a mold outer wall 4 as Cold side and a right side wall 5 and a left side wall 6 is formed.
In Strömungsrichtung 8 sind turbulenzerzeugende Elemente 7, 9 und 10 auf der Kokilleninnenwand 3, der Heißseite, angebracht und ragen in den Kühlmittelkanal 2.In the flow direction 8, turbulence-generating elements 7, 9 and 10 are mounted on the mold inner wall 3, the hot side, and protrude into the coolant channel 2.
Figur 2 zeigt in geschnittener Vorderansicht den Kühlmittelkanal 2, bei dem in zwei Reihen 11 turbulenzerzeugende Elemente 7 in Form von Tetraedern auf der Kokilleninnenwand 3 angebracht sind. Die Tetraeder zeigen mit ihrer Spitze entgegen der Strömungsrichtung 8. Durch eine derartige Anordnung wird ein sich aufbauender Widerstand erzeugt. Hinter dem Tetraeder verhält sich das Kühlmittel turbulent. Die Tetraeder können auch versetzt angeordnet sein.FIG. 2 shows, in a sectional front view, the coolant channel 2 in which 11 turbulence-generating elements 7 in the form of tetrahedrons are mounted on the mold inner wall 3 in two rows. The tetrahedra point with their tip counter to the flow direction 8. By such an arrangement, a building resistance is generated. Behind the tetrahedron, the coolant behaves turbulently. The tetrahedra can also be arranged offset.
In Figur 3 sind turbulenzerzeugende Elemente 9 in Form von horizontalen Stufen dargestellt. Die horizontalen Stufen werden beispielsweise durch einen rechteckigen Stab (siehe Figur 5) gebildet, der sich über die gesamte Breite des Kühlmittelkanals 2 erstreckt.FIG. 3 shows turbulence-generating elements 9 in the form of horizontal steps. The horizontal steps are formed, for example, by a rectangular bar (see FIG. 5) which extends over the entire width of the coolant channel 2.
Eine weitere Form der turbulenzerzeugenden Elemente 10 ist in Figur 4 dargestellt. Diese turbulenzerzeugenden Elemente 10 besitzen die Form von Winglets. Diese, z.B. von Flugzeugflügeln bekannten Winglets, sind entweder in Reihen 11 hintereinander ausgerichtet an der Kokilleninnenwand 3 befestigt oder sind auf der Kokilleninnenwand verteilt befestigt, wie durch das unterste Winglet angedeutet.Another form of the turbulence-generating elements 10 is shown in FIG. These turbulence generating elements 10 are in the form of winglets. These, e.g. Winglets known from aircraft wings are either aligned one behind the other in rows 11 fixed to the mold inner wall 3 or are distributed on the mold inner wall, as indicated by the lowermost winglet.
Sämtliche turbulenzerzeugenden Elemente 7, 9 und 10 ragen von der Kokilleninnenwand 3 in den Kühlmittelkanal 2 hinein oder umgekehrt und beeinflussen das Kühlmittel, wenn es in Strömungsrichtung 8 durch den Kühlmittelkanal 2 strömt.
BezugszeichenlisteAll turbulence-generating elements 7, 9 and 10 protrude from the mold inner wall 3 into the coolant channel 2 or vice versa and influence the coolant when it flows in the flow direction 8 through the coolant channel 2. LIST OF REFERENCE NUMBERS
1 Stranggießkokille1 continuous casting mold
2 Kühlmittelkanal2 coolant channel
3 Kokilleninnenwand3 Kokilleninnenwand
4 Kokillenaußenwand4 mold outer wall
5 rechte Seitenwand5 right side wall
6 linke Seitenwand6 left side wall
7 Tetraeder7 tetrahedrons
8 Strömungsrichtung8 flow direction
9 horizontale Stufe9 horizontal step
10 Winglet10 winglets
11 Reihe
11 row
Claims
1. Stranggießkokille (1 ) mit einem Kühlmittelkanal (2), der durch eine, dem schmelzflüssigen Metall zugewandten, Kokilleninnenwand (3) als Heißseite, einer Kokillenaußenwand (4) als Kaltseite und einer rechten Seitenwand (5) und einer linken Seitenwand (6) gebildet ist, dadurch gekennzeichnet, dass der Kühlmittelkanal (2) mit turbulenzerzeugenden Elementen (7, 9,1. continuous casting mold (1) with a coolant channel (2) facing through a, the molten metal, mold inner wall (3) as a hot side, a Kokillenaußenwand (4) as a cold side and a right side wall (5) and a left side wall (6) is formed, characterized in that the coolant channel (2) with turbulence-generating elements (7, 9,
10) ausgebildet ist.10) is formed.
2. Stranggießkokille (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die turbulenzerzeugenden Elemente (7) in Form von Tetraedern ausgebildet sind.2. Continuous casting mold (1) according to claim 1, characterized in that the turbulence-generating elements (7) are in the form of tetrahedrons.
3. Stranggießkokille (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die turbulenzerzeugenden Elemente (9) in Form von horizontalen Stufen ausgebildet sind.3. Continuous casting mold (1) according to claim 1, characterized in that the turbulence-generating elements (9) are formed in the form of horizontal steps.
4. Stranggießkokille (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die turbulenzerzeugenden Elemente (10) in Form von Winglets ausgebildet sind.4. Continuous casting mold (1) according to claim 1, characterized in that the turbulence-generating elements (10) are designed in the form of winglets.
5. Stranggießkokille (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, das die turbulenzerzeugenden Elemente (7, 9, 10) auf der Kokilleninnenwand (3) angeordnet ausgebildet sind.5. Continuous casting mold (1) according to one of claims 1 to 4, characterized in that the turbulence-generating elements (7, 9, 10) are arranged arranged on the mold inner wall (3).
6. Stranggießkokille (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, das die turbulenzerzeugenden Elemente (7, 9, 10) auf der Kokillenaußenwand (4) angeordnet ausgebildet sind.6. Continuous casting mold (1) according to one of claims 1 to 4, characterized in that the turbulence-generating elements (7, 9, 10) are arranged arranged on the mold outer wall (4).
7. Stranggießkokille (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, das die turbulenzerzeugenden Elemente (7, 10) in Reihen (11 ) angeordnet ausgebildet sind.7. Continuous casting mold (1) according to one of claims 1 to 4, characterized in that the turbulence-generating elements (7, 10) are arranged in rows (11).
8. Stranggießkokille (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, das die turbulenzerzeugenden Elemente (7, 10) in Reihen (11 ), versetzt angeordnet, ausgebildet sind.8. Continuous casting mold (1) according to one of claims 1 to 4, characterized in that the turbulence-generating elements (7, 10) in rows (11), arranged offset, are formed.
9. Stranggießkokille (1 ) nach einem der Ansprüche 1 bis , dadurch gekennzeichnet, das die turbulenzerzeugenden Elemente (7, 9, 10) im Bereich des Gießspiegels angeordnet ausgebildet sind. 9. Continuous casting mold (1) according to one of claims 1 to, characterized in that the turbulence-generating elements (7, 9, 10) are arranged in the region of the casting mirror.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002405A DE102007002405A1 (en) | 2007-01-17 | 2007-01-17 | Continuous casting mold with coolant channel |
PCT/EP2007/010773 WO2008086856A1 (en) | 2007-01-17 | 2007-12-11 | Continuous casting die with coolant channel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2121218A1 true EP2121218A1 (en) | 2009-11-25 |
Family
ID=39168055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07847053A Withdrawn EP2121218A1 (en) | 2007-01-17 | 2007-12-11 | Continuous casting die with coolant channel |
Country Status (15)
Country | Link |
---|---|
US (1) | US20100065242A1 (en) |
EP (1) | EP2121218A1 (en) |
JP (1) | JP2010515580A (en) |
KR (1) | KR20090077925A (en) |
CN (1) | CN101646515B (en) |
AR (1) | AR064927A1 (en) |
BR (1) | BRPI0718884A2 (en) |
CA (1) | CA2670037A1 (en) |
DE (1) | DE102007002405A1 (en) |
MX (1) | MX2009007659A (en) |
RU (1) | RU2414986C1 (en) |
TW (1) | TW200909099A (en) |
UA (1) | UA92985C2 (en) |
WO (1) | WO2008086856A1 (en) |
ZA (1) | ZA200902185B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2711276C1 (en) * | 2018-12-05 | 2020-01-16 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Device for continuous casting and pressing |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017206914A1 (en) | 2017-04-25 | 2018-10-25 | Sms Group Gmbh | Continuous casting mold with flow-optimized cooling |
CN113015587B (en) * | 2018-11-09 | 2022-12-27 | 杰富意钢铁株式会社 | Mold for continuous casting of steel and method for continuous casting of steel |
JP7020376B2 (en) * | 2018-11-09 | 2022-02-16 | Jfeスチール株式会社 | Mold for continuous steel casting and continuous steel casting method |
CN109434044A (en) * | 2018-11-29 | 2019-03-08 | 李泽朋 | Band makes the reasonable continuous casting crystallining copper sheet mode structure of unrestrained effect cooling structure |
IT201900001035A1 (en) * | 2019-01-24 | 2020-07-24 | Danieli Off Mecc | INGOT MILL FOR CONTINUOUS CASTING |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4716954A (en) * | 1986-10-24 | 1988-01-05 | Allegheny Ludlum Corporation | Method and apparatus for sequentially continuous casting different composition grades of steel |
FR2661120B3 (en) * | 1990-04-20 | 1992-04-03 | Siderurgie Fse Inst Rech | LIQUID METAL CONTINUOUS CASTING MACHINE PROVIDED WITH LIQUID METAL SOLIDIFICATION CONTROL MEANS. |
EP0686445B1 (en) | 1994-06-06 | 2000-08-16 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Method to control the deformations of the sidewalls of a crystalliser, and continuous-casting crystalliser |
EP0686446B1 (en) | 1994-06-06 | 2000-08-16 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuous-casting crystalliser |
IT1267246B1 (en) | 1994-06-06 | 1997-01-28 | Danieli Off Mecc | WALL UNDERLAY FOR CONTINUOUS CASTING |
DE69518360T2 (en) * | 1994-06-06 | 2000-12-28 | Danieli & C. Officine Meccaniche S.P.A., Buttrio | Continuous casting mold with improved heat exchange and method for increasing the heat exchange of a continuous casting mold |
US5522448A (en) * | 1994-09-27 | 1996-06-04 | Aluminum Company Of America | Cooling insert for casting mold and associated method |
DE19508169C5 (en) * | 1995-03-08 | 2009-11-12 | Kme Germany Ag & Co. Kg | Mold for continuous casting of metals |
DE19826522A1 (en) | 1998-06-15 | 1999-12-16 | Schloemann Siemag Ag | Mold wall of a continuous casting mold |
CN1240685A (en) * | 1998-07-02 | 2000-01-12 | Sms舒路曼-斯玛公司 | Wide side of flat ingot mould |
DE19842674A1 (en) | 1998-09-17 | 2000-03-23 | Schloemann Siemag Ag | Mold wall of a continuous casting mold |
IT1310518B1 (en) * | 1999-01-13 | 2002-02-18 | Danieli Off Mecc | DEVICE FOR CONTINUOUS HIGH SPEED CASTING AND RELATED PROCESS |
DE10035737A1 (en) | 2000-07-22 | 2002-01-31 | Sms Demag Ag | Continuous casting mold with copper plates enclosing the casting cross section |
DE10138988C2 (en) | 2000-08-23 | 2003-06-12 | Sms Demag Ag | Chilled continuous casting mold for casting metal |
DE10122618A1 (en) | 2001-05-10 | 2002-11-14 | Sms Demag Ag | Process for delaying the formation of deposits in cooling channels of continuous casting molds |
DE10253735A1 (en) | 2002-04-27 | 2003-11-13 | Sms Demag Ag | Intensification of the heat transfer in continuous casting molds |
DE10337205A1 (en) * | 2003-08-13 | 2005-03-10 | Km Europa Metal Ag | Liquid-cooled mold |
-
2007
- 2007-01-17 DE DE102007002405A patent/DE102007002405A1/en not_active Withdrawn
- 2007-12-11 UA UAA200908561A patent/UA92985C2/en unknown
- 2007-12-11 WO PCT/EP2007/010773 patent/WO2008086856A1/en active Application Filing
- 2007-12-11 TW TW096147157A patent/TW200909099A/en unknown
- 2007-12-11 CA CA002670037A patent/CA2670037A1/en not_active Abandoned
- 2007-12-11 MX MX2009007659A patent/MX2009007659A/en unknown
- 2007-12-11 KR KR1020097008292A patent/KR20090077925A/en not_active Application Discontinuation
- 2007-12-11 EP EP07847053A patent/EP2121218A1/en not_active Withdrawn
- 2007-12-11 JP JP2009545093A patent/JP2010515580A/en not_active Withdrawn
- 2007-12-11 US US12/448,953 patent/US20100065242A1/en not_active Abandoned
- 2007-12-11 BR BRPI0718884-6A patent/BRPI0718884A2/en not_active IP Right Cessation
- 2007-12-11 CN CN2007800500903A patent/CN101646515B/en not_active Expired - Fee Related
- 2007-12-11 RU RU2009131056/02A patent/RU2414986C1/en not_active IP Right Cessation
-
2008
- 2008-01-16 AR ARP080100195A patent/AR064927A1/en not_active Application Discontinuation
-
2009
- 2009-03-26 ZA ZA200902185A patent/ZA200902185B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2008086856A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2711276C1 (en) * | 2018-12-05 | 2020-01-16 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Device for continuous casting and pressing |
Also Published As
Publication number | Publication date |
---|---|
RU2414986C1 (en) | 2011-03-27 |
BRPI0718884A2 (en) | 2013-12-17 |
CA2670037A1 (en) | 2008-07-24 |
WO2008086856A1 (en) | 2008-07-24 |
UA92985C2 (en) | 2010-12-27 |
AR064927A1 (en) | 2009-05-06 |
TW200909099A (en) | 2009-03-01 |
CN101646515B (en) | 2012-06-13 |
JP2010515580A (en) | 2010-05-13 |
CN101646515A (en) | 2010-02-10 |
MX2009007659A (en) | 2009-10-13 |
KR20090077925A (en) | 2009-07-16 |
DE102007002405A1 (en) | 2008-07-24 |
ZA200902185B (en) | 2010-01-27 |
US20100065242A1 (en) | 2010-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4116886C2 (en) | Perforated sheet metal as a heat shield | |
EP2121218A1 (en) | Continuous casting die with coolant channel | |
DE102009016577B4 (en) | Method for operating a battery cooling plate | |
EP3062054B1 (en) | Heat exchanger, in particular for a motor vehicle | |
EP1668236B1 (en) | Combustion chamber comprising a cooling unit and method for producing said combustion chamber | |
DE112015001138T5 (en) | High-performance tool cooling system | |
EP1736257B1 (en) | Fluid cooled mould for continuous casting of metals | |
DE102014204816A1 (en) | Electric machine with a cooling element | |
EP1136621B1 (en) | Rotary roller | |
EP2323785A1 (en) | Continuous-casting mould | |
EP0661511A1 (en) | Heat exchanger tube with insert element | |
EP1795281B1 (en) | Mould for continuous casting | |
DE102018216691A1 (en) | Propulsion device for a ship and method for operating such a ship | |
EP3461570B1 (en) | Continuous casting mould | |
DE69117422T2 (en) | Device for increased cooling when casting metal workpieces | |
DE102023115151B3 (en) | Mould body | |
DE102020000274A1 (en) | Method of manufacturing a fin and plate heat exchanger | |
DE102015202918A1 (en) | Housing of an electrical machine | |
WO2014086558A1 (en) | Heat exchanger for an internal combustion engine | |
DE102004020602A1 (en) | Plate heat exchanger for internal combustion engine, has plate gaps with another two plate gaps, which guide one of three heat exchange fluids, where fluids are exchanged with each other in adjoining gaps in respective same row sequence | |
EP3812677B1 (en) | Radiator for cooling a transformer or a choke | |
DE102017204492A1 (en) | Heat exchanger for a fused-salt electrolysis cell | |
DE102005003068A1 (en) | Mould for metal or plastic, comprises an integrated cooling channel system for a cooling fluid, and a static mixer | |
DE4446153A1 (en) | Mfr. of heat exchanger for heating air in automobile interior | |
EP0048873B1 (en) | Heat transfer device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20090817 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20100506 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20130220 |