EP1002600A2 - Submerged nozzle for feeding molten metal into a mould for the continuous casting of thin material - Google Patents
Submerged nozzle for feeding molten metal into a mould for the continuous casting of thin material Download PDFInfo
- Publication number
- EP1002600A2 EP1002600A2 EP99122176A EP99122176A EP1002600A2 EP 1002600 A2 EP1002600 A2 EP 1002600A2 EP 99122176 A EP99122176 A EP 99122176A EP 99122176 A EP99122176 A EP 99122176A EP 1002600 A2 EP1002600 A2 EP 1002600A2
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- EP
- European Patent Office
- Prior art keywords
- flow
- height
- pouring tube
- tube according
- immersion pouring
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 4
- 239000000463 material Substances 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
- 238000007654 immersion Methods 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 claims 2
- 239000000161 steel melt Substances 0.000 claims 1
- 239000000155 melt Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010038743 Restlessness Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
Definitions
- the invention relates to a dip tube for introducing melt, in particular of molten steel, from a casting or intermediate container into one with broad side walls and narrow side walls formed mold for continuous casting of in particular flat products, the pouring tube being a flow channel trained tube piece, which with a contour element and at least two outlet openings opposite in the direction of the narrow side walls is trained.
- Immersion pouring tubes ensure a uniform and low-turbulence in the mold Distribution of the melt.
- immersion pipes have floor or Inner contour elements.
- a dip tube must be designed so that a restless Casting level in the form of a pulsating up and down movement or one Wave movement within the mold is avoided.
- These requirements must especially immersion pouring tubes for so-called thin slab formats, with a thickness between 30 and 100 mm.
- DE 41 42 447 C2 describes an immersion pouring tube for a thin slab, which consists of a lower pipe section, which in the direction of the The narrow side walls of the mold are expanded in cross-section and at the lower end with a centrally located bottom piece leaving the outlet openings is provided for the melt.
- the inner wall of the cross section widening Part of the immersion pouring tube forms together with the opposite Wall parts of the bottom piece flow channels, their axes with the immersion nozzle axis include a certain angle that is between 10 and 22 Degrees.
- This immersion tube has a much larger width than thickness on.
- the outlet openings from the immersion pouring tube are narrowed like a nozzle.
- WO 95/29025 describes an immersion pouring tube with a pipe section, which has two outlet openings in the lower area, which are in one relative acute angles are directed into the melt sump within the mold.
- the present invention is based on the knowledge that it is the flow transition from the outlet openings of the immersion pouring tube into the mold not a free flow process, but rather a flow process acts. This comes with the effective flow length of the central one Contour element of the pouring tube to crucial importance, d. H. the longer the effective length of the floor element, the more stable is the flow division and leadership.
- the object of the invention is to achieve the above-mentioned finding in a dip tube to implement the aforementioned type constructively so that a stable flow division through the dip tube is ensured and a largely low-turbulence inflow of the melt from the immersion tube into the Melt sump of the mold can take place.
- the problem is solved in a submerged nozzle of the type mentioned with the invention in that the contour element with a fluidly merging combination of a solid, opposite wall areas connecting floor element with the height H 1 and above it arranged flow dividers with in the direction of the X axis Height H 2 is formed, which protrude from the wall areas into the pipe section of the flow channel without a fixed connection to opposite wall areas.
- the flow dividers can alternatively also with the formation of a fixed Connection of opposite wall areas in the form of a partition wall Divide the pipe section into two adjacent channels, each one Exit opening is assigned.
- the floor element being assigned at least one flow divider extending into the tube piece, that the height H 1 of the contour element together with the height H 2 of the flow divider is greater than the height L 1 of an outlet opening .
- the base element being a solid molded part with the height H 1 connecting opposite wall regions of the tube piece, results from the fact that it preferably has the spatial shape of a wedge tapered on opposite sides in the direction of the outlet openings.
- a particularly preferred embodiment of the dip tube is achieved in that the base element has the spatial shape of a concave curve, in particular a polynomial function that defines at least second order, in the direction of its outlet openings.
- the further expedient embodiment of the invention further provides that the flow dividers are designed as flow guide bodies with a rectangular or trapezoidal cross-section, the width b and / or height h of which can be varied over the length L of the pipe section, and that the flow guide bodies have the height L 1 of the outlet openings tower over. All edges and / or surface transitions with roundings are advantageously formed on the base element as well as on the flow guiding bodies for a constant flow. And finally, in the formation of the immersion pouring tube according to the invention, use can be made of the measure that the contour element with the flow guide bodies is embedded in its matrix or is an exchangeable individual element.
- the additional flow guide bodies in the x-axis direction stabilize the immersion tube shell, especially when connecting the base element to the immersion tube shell, that there is the possibility of further reducing the wall thicknesses, without adversely changing the flow conditions. This is spatial cramped conditions within the molds commonly used advantageous for thin slab casting.
- the invention is based on exemplary embodiments with Figures 1, 2a and 2b, and 3a to 3c and 4a to 4c shown and explained in more detail.
- Figure 1 shows the immersion pouring tube 1 for introducing molten steel from a Pouring or intermediate container 3 into a mold 5, in particular for casting Thin slabs spatially through broad side walls 14 and narrow side walls 15 is limited.
- the immersion pouring tube reaching into the melt sump of the mold 5 1 shows a lower pipe section with two outlet openings 8, 8 ', which in FIG Show direction of the narrow side walls 15 of the mold 5.
- Figure 2a shows the inventive design of the immersion pouring tube 1, after which the lower pipe section is a solid base element 10 and flow divider 12 and the height H1 + H2, which is the flow division in the flow channel Force 2 of the pipe section is greater than the height L1 of the outlet opening 8, 8 '.
- the floor element 10 consists of a solid, opposite wall area connecting part with the height H1.
- FIGS. 3a to 3c show flow guide bodies 12 which start from opposite wall areas in the flow channel 2 of the pipe section 1 protrude and stabilize the flow jet.
- the widths b and / or the height h the flow guide body 12 can vary over the length of the dip tube L. his.
- FIGS. 4a to 4c show a particularly favorable form of the solid floor element 10, with the shape of a tapered on both sides Keils, preferably with a concave, at least via a polynomial function second-order curve shape to be defined
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
Die Erfindung betrifft ein Tauchgießrohr zum Einleiten von Schmelze, insbesondere von Stahlschmelze, aus einem Gieß- oder Zwischenbehälter in eine mit Breitseitenwänden und Schmalseitenwänden ausgebildete Kokille zum Stranggießen von insbesondere Flachprodukten, wobei das Gießrohr ein als Strömungskanal ausgebildetes Rohrstück aufweist, welches mit einem Konturelement und wenigstens zwei in Richtung der Schmal seitenwände gegenüberliegenden Austrittsöffnungen ausgebildet ist.The invention relates to a dip tube for introducing melt, in particular of molten steel, from a casting or intermediate container into one with broad side walls and narrow side walls formed mold for continuous casting of in particular flat products, the pouring tube being a flow channel trained tube piece, which with a contour element and at least two outlet openings opposite in the direction of the narrow side walls is trained.
Tauchgießrohre sorgen in der Kokille für eine gleichmäßige und turbulenzarme Verteilung der Schmelze. Zu diesem Zweck besitzen Tauchgießrohre Boden- bzw. Innenkonturelemente. Ein Tauchgießrohr muß so gestaltet sein, daß ein unruhiger Gießspiegel in Form einer pulsierenden Auf- und Abwärtsbewegung oder einer Wellenbewegung innerhalb der Kokille vermieden wird. Diese Vorgaben müssen im besonderen Maße Tauchgießrohre für sogenannte Dünnbrammenformate, mit einer Dicke zwischen 30 und 100 mm, erfüllen.Immersion pouring tubes ensure a uniform and low-turbulence in the mold Distribution of the melt. For this purpose, immersion pipes have floor or Inner contour elements. A dip tube must be designed so that a restless Casting level in the form of a pulsating up and down movement or one Wave movement within the mold is avoided. These requirements must especially immersion pouring tubes for so-called thin slab formats, with a thickness between 30 and 100 mm.
In der DE 41 42 447 C2 wird ein Tauchgießrohr für eine Dünnbramme beschrieben, das aus einem unteren Rohrstück besteht, welches in Richtung auf die Schmalseitenwände der Kokille im Querschnitt erweitert ist und am unteren Ende mit einem mittig angeordneten Bodenstück unter Belassung von Austrittsöffnungen für die Schmelze versehen ist. Die Innenwand des den Querschnitt erweiternden Teiles des Tauchgießrohres bildet zusammen mit den gegenüberliegenden Wandteilen des Bodenstücks Strömungskanäle aus, deren Achsen mit der Tauchgießrohrachse einen bestimmten Winkel einschließen, der zwischen 10 und 22 Grad beträgt. Dieses Tauchgießrohr weist eine sehr viel größere Breite als Dicke auf. Die Austrittsöffnungen aus dem Tauchgießrohr sind düsenartig verengt.DE 41 42 447 C2 describes an immersion pouring tube for a thin slab, which consists of a lower pipe section, which in the direction of the The narrow side walls of the mold are expanded in cross-section and at the lower end with a centrally located bottom piece leaving the outlet openings is provided for the melt. The inner wall of the cross section widening Part of the immersion pouring tube forms together with the opposite Wall parts of the bottom piece flow channels, their axes with the immersion nozzle axis include a certain angle that is between 10 and 22 Degrees. This immersion tube has a much larger width than thickness on. The outlet openings from the immersion pouring tube are narrowed like a nozzle.
In der WO 95/29025 wird ein Tauchgießrohr mit einem Rohrstück beschrieben, welches im unteren Bereich zwei Austrittsöffnungen aufweist, die in einem relativ spitzen Winkel in den Schmelzensumpf innerhalb der Kokille gerichtet sind. Die beim Dünnbrammengießen notwendigen hohen Strömungsgeschwindigkeiten aus den spitzwinklig nach unten geneigten Ausströmöffnungen des Gießrohres bergen in sich die Gefahr von Auswaschungen der Strangschale, die im ungünstigsten Fall zum Strangdurchbruch führen können.WO 95/29025 describes an immersion pouring tube with a pipe section, which has two outlet openings in the lower area, which are in one relative acute angles are directed into the melt sump within the mold. The necessary high flow velocities during thin slab casting the outflow openings of the pouring tube, which are inclined at an acute angle in itself the danger of washing out the strand shell, which is the worst Fall can lead to strand breakdown.
Die vorliegende Erfindung beruht auf der Erkenntnis, daß es sich bei dem Strömungsübergang aus den Austrittsöffnungen des Tauchgießrohres in die Kokille nicht um einen freien Anströmvorgang, sondern vielmehr um einen Umströmvorgang handelt. Damit kommt der wirksamen umströmten Länge des zentralen Konturelements des Gießrohres entscheidende Bedeutung zu, d. h. je länger die wirksame Länge des Bodenelements ist, um so stabiler erfolgt die Strömungsteilung und -führung.The present invention is based on the knowledge that it is the flow transition from the outlet openings of the immersion pouring tube into the mold not a free flow process, but rather a flow process acts. This comes with the effective flow length of the central one Contour element of the pouring tube to crucial importance, d. H. the longer the effective length of the floor element, the more stable is the flow division and leadership.
Aufgabe der Erfindung ist es, die obengenannte Erkenntnis bei einem Tauchgießrohr der eingangsgenannten Gattung konstruktiv so zu verwirklichen, daß eine stabile Strömungsteilung durch das Tauchrohr gewährleistet ist und ein weitgehend turbulenzarmes Einströmen der Schmelze aus dem Tauchgießrohr in den Schmelzensumpf der Kokille erfolgen kann. The object of the invention is to achieve the above-mentioned finding in a dip tube to implement the aforementioned type constructively so that a stable flow division through the dip tube is ensured and a largely low-turbulence inflow of the melt from the immersion tube into the Melt sump of the mold can take place.
Die Lösung der Aufgabe gelingt bei einem Tauchgießrohr der genannten Gattung mit der Erfindung dadurch, daß das Konturelement mit einer fliessend ineinander übergehenden Kombination eines massiven, gegenüberliegende Wandbereiche verbindenden Bodenelements mit der Höhe H1 und oberhalb desselben angeordneten Strömungsteilern mit in Richtung der X-Achse vorgesehener Höhe H2 ausgebildet ist, die ausgehend von den Wandbereichen in das Rohrstück des Strömungskanals ohne feste Verbindung mit gegenüberliegenden Wandbereichen hineinragen.The problem is solved in a submerged nozzle of the type mentioned with the invention in that the contour element with a fluidly merging combination of a solid, opposite wall areas connecting floor element with the height H 1 and above it arranged flow dividers with in the direction of the X axis Height H 2 is formed, which protrude from the wall areas into the pipe section of the flow channel without a fixed connection to opposite wall areas.
Die Strömungsteiler können alternativ aber auch unter Ausbildung einer festen Verbindung gegenüberliegender Wandbereiche in Form einer Trennungswand das Rohrstück in zwei nebeneinanderliegende Kanäle teilen, welchen jeweils eine Austrittsöffnung zugeordnet ist.The flow dividers can alternatively also with the formation of a fixed Connection of opposite wall areas in the form of a partition wall Divide the pipe section into two adjacent channels, each one Exit opening is assigned.
Eine besonders stabile Strömungsteilung durch das Tauchrohr wird dadurch gewährleistet, wobei dem Bodenelement wenigstens ein sich in das Rohrstück erstreckender Strömungsteiler zugeordnet ist, daß die Höhe H1 des Konturelementes zusammen mit der Höhe H2 des Strömungsteilers größer ist, als die Höhe L1 einer Austrittsöffnung.A particularly stable flow division through the immersion tube is thereby ensured, the floor element being assigned at least one flow divider extending into the tube piece, that the height H 1 of the contour element together with the height H 2 of the flow divider is greater than the height L 1 of an outlet opening .
Infolge dieser konstruktiven Ausbildung des Konturelementes im Tauchgießrohr wird eine stabile Strömungsteilung durch das Tauchrohr gewährleistet und eine besonders gute und stabile Strömung der Schmelze in die Kokille eingestellt. Selbst bei veränderlichem Füllstand der Schmelze innerhalb der Kokille gelingt eine sichere und gleichmäßige Trennung der beiden aus dem Rohrstück austretenden Strömungsjets. Die sonst üblichen wechselseitigen Beeinflussungen der Strömungsjets untereinander werden erheblich reduziert.As a result of this constructive design of the contour element in the dip tube a stable flow division through the immersion tube is guaranteed and a particularly good and stable flow of the melt into the mold. Even if the melt level changes within the mold a safe and even separation of the two emerging from the pipe section Flow jets. The usual mutual influences of the Flow jets among themselves are significantly reduced.
Weitere vorteilhafte Ausgestaltungen des Tauchrohres nach der Erfindung, wobei
das Bodenelement ein gegenüberliegende Wandbereiche des Rohrstücks verbindendes
massives Formteil mit der Höhe H1 ist, ergeben sich dadurch, daß es bevorzugt
in Richtung der Austrittsöffnungen die Raumform eines nach gegenüberliegenden
Seiten verjüngten Keiles besitzt.
Eine besonders bervorzugte Ausbildung des Tauchrohres wird dadurch erreicht,
daß das Bodenelement in Richtung seiner Austrittsöffnungen die Raumform einer
konkaven, insbesondere eine Polynomfunktion mindestens zweiter Ordnung definierenden
Kurve besitzt.
Die weitere zweckmäßige Ausgestaltung der Erfindung sieht ferner vor, daß die
Strömungsteiler als Strömungsleitkörper mit rechteckigem oder trapezförmigem
Querschnitt ausgebildet sind, deren Breite b und/oder Höhe h über die Länge L
des Rohrstücks veränderlich ist, und daß die Strömungsleitkörper die Höhe L1 der
Austrittsöffnungen überragen.
Mit Vorteil für einen stetigen Strömungsverlauf sind sowohl am Bodenelement, als
auch an den Strömungsleitkörpern alle Kanten und/oder Flächenübergänge mit
Verrundungen ausgebildet.
Und schließlich kann bei der Ausbildung des Tauchgießrohres nach der Erfindung
von der Maßnahme Gebrauch gemacht sein, daß das Konturelement mit den
Strömungsleitkörpern in dessen Matrix eingebettet oder ein austauschbares Einzelelement
ist.Further advantageous refinements of the dip tube according to the invention, the base element being a solid molded part with the height H 1 connecting opposite wall regions of the tube piece, results from the fact that it preferably has the spatial shape of a wedge tapered on opposite sides in the direction of the outlet openings.
A particularly preferred embodiment of the dip tube is achieved in that the base element has the spatial shape of a concave curve, in particular a polynomial function that defines at least second order, in the direction of its outlet openings.
The further expedient embodiment of the invention further provides that the flow dividers are designed as flow guide bodies with a rectangular or trapezoidal cross-section, the width b and / or height h of which can be varied over the length L of the pipe section, and that the flow guide bodies have the height L 1 of the outlet openings tower over.
All edges and / or surface transitions with roundings are advantageously formed on the base element as well as on the flow guiding bodies for a constant flow.
And finally, in the formation of the immersion pouring tube according to the invention, use can be made of the measure that the contour element with the flow guide bodies is embedded in its matrix or is an exchangeable individual element.
Die Verwendung von Strömungsleitkörpern gegenüber einem vergleichsweise hoch und dünn ausgeführten massiven Bodenelement hat den Vorteil, daß die Gefahr des Ausbrechens geringer ist. Zudem ergeben sich nur geringe Veränderungen in den Strömungs-Querschnittsflächen.The use of flow directors compared to one high and thin solid floor element has the advantage that the Risk of breakout is lower. In addition, there are only minor changes in the flow cross-sectional areas.
Auch aus Sicht der Fertigung ergeben sich Vorteile: Die zusätzlichen Strömungsleitkörper in x-Achsrichtung führen zu einer Stabilisierung der Tauchgießrohrschale, insbesondere bei der Verbindung des Bodenelements mit der Tauchgießrohrschale, daß so die Möglichkeit besteht, die Wandstärken weiter zu reduzieren, ohne die Strömungsbedingungen nachteilig zu verändern. Dies ist bei den räumlich beengten Verhältnissen innerhalb der üblicherweise verwendeten Kokillen zum Dünnbrammengießen von Vorteil.There are also advantages from a manufacturing perspective: The additional flow guide bodies in the x-axis direction stabilize the immersion tube shell, especially when connecting the base element to the immersion tube shell, that there is the possibility of further reducing the wall thicknesses, without adversely changing the flow conditions. This is spatial cramped conditions within the molds commonly used advantageous for thin slab casting.
Die Erfindung wird anhand von Ausführungsbeispielen mit den Figuren 1, 2a und 2b, sowie 3a bis 3c und 4a bis 4c näher dargestellt und erläutert.The invention is based on exemplary embodiments with Figures 1, 2a and 2b, and 3a to 3c and 4a to 4c shown and explained in more detail.
Figur 1 zeigt das Tauchgießrohr 1 zum Einleiten von Stahlschmelze aus einem
Gieß- oder Zwischenbehälter 3 in eine Kokille 5, insbesondere zum Gießen von
Dünnbrammen, die räumlich durch Breitseitenwände 14 und Schmalseitenwände
15 begrenzt ist. Das bis in den Schmelzensumpf der Kokille 5 reichende Tauchgießrohr
1 zeigt ein unteres Rohrstück mit zwei Austrittsöffnungen 8, 8', die in
Richtung der Schmalseitenwände 15 der Kokille 5 zeigen.Figure 1 shows the
Figur 2a zeigt die erfindungsgemäße Ausbildung des Tauchgießrohres 1, wonach
das untere Rohrstück ein massives Bodenelement 10 sowie Strömungsteiler 12
aufweist und die Höhe H1 + H2, welches die Strömungsteilung im Strömungskanal
2 des Rohrstücks erzwingen, größer ist als die Höhe L1 der Austrittsöffnung 8, 8'.
Das Bodenelement 10 besteht aus einem massiven, gegenüberliegende Wandbereiche
verbindenden Teil mit der Höhe H1.Figure 2a shows the inventive design of the
In den Figuren 3a bis 3c sind Strömungsleitkörper 12 gezeigt, die ausgehend von
gegenüberliegenden Wandbereichen in den Strömungskanal 2 des Rohrstücks 1
hineinragen und den Strömungsjet stabilisieren. Die Breiten b und/oder die Höhe h
der Strömungsleitkörper 12 können über die Länge des Tauchrohres L veränderlich
sein.FIGS. 3a to 3c show
In den Figuren 4a bis 4c ist eine besonders günstige Form des massiven Bodenelements
10 dargestellt, mit der Form eines nach beiden Seiten verjüngten
Keils, bevorzugt mit einer konkav verlaufenden, über eine Polynomfunktion mindestens
zweiter Ordnung zu definierenden Kurvenform FIGS. 4a to 4c show a particularly favorable form of the
Die weiteren Einzelheiten der Erfindung erschließen sich für den Fachmann aus den genannten Zeichnungen.The further details of the invention will be apparent to those skilled in the art the drawings mentioned.
Claims (10)
dadurch gekennzeichnet,
daß das Konturelement (10), (12) mit einer fließend ineinander übergehenden Kombination eines massiven, gegenüberliegende Wandbereiche verbindenden Bodenelements (10) mit der Höhe (H1) und oberhalb desselben angeordneten Strömungsteilern (12) mit in Richtung der X-Achse vorgesehener Höhe (H2) ausgebildet ist, die ausgehend von den Wandbereichen in das Rohrstück (11) des Strömungskanals ohne feste Verbindung mit gegenüberliegenden Wandbereichen hineinragen.Immersion pouring tube (1) for introducing melt, in particular steel melt, from a pouring or intermediate container (3) into a mold (5) formed with broad sides (14) and narrow side walls (15) for the continuous casting of, in particular, flat products, the immersion pouring tube (1 ) has a pipe section (11) designed as a flow channel, which is formed with a contour element (10), (12) and at least two outlet openings (8, 8 ') opposite in the direction of the narrow side walls (15),
characterized,
that the contour element (10), (12) with a fluidly merging combination of a solid, opposite wall areas connecting floor element (10) with the height (H 1 ) and above it arranged flow dividers (12) with a height provided in the direction of the X-axis (H 2 ) is formed, which protrude from the wall areas into the pipe section (11) of the flow channel without a fixed connection to opposite wall areas.
dadurch gekennzeichnet,
daß die Strömungsteiler (12) ohne Ausbildung einer festen Verbindung der gegenüberliegenden Wandbereiche in das Rohrstück (11) des Strömungskanals hineinragen.Immersion pouring tube according to claim 1,
characterized,
that the flow dividers (12) protrude into the pipe section (11) of the flow channel without forming a fixed connection between the opposite wall regions.
dadurch gekennzeichnet,
daß die Strömungsteiler (12) unter Ausbildung einer festen Verbindung gegenüberliegender Wandbereiche in Form einer Trennungswand das Rohrstück (11) in zwei nebeneinanderliegende Kanäle teilen, welchen jeweils eine Austrittsöffnung (8, 8') zugeordnet ist.Immersion pouring tube according to claim 1 or 2,
characterized,
that the flow dividers (12), forming a fixed connection between opposite wall areas in the form of a partition, divide the pipe section (11) into two adjacent channels, each of which is assigned an outlet opening (8, 8 ').
dadurch gekennzeichnet,
daß die Höhe (H1) des Bodenelement (10) zusammen mit der Höhe (H2) des Strömungsteilers (12) größer ist, als die Höhe (L1) einer Austrittsöffnung (8, 8').Immersion pouring tube according to one of claims 1 to 3, wherein at least one flow divider (12) extending into the tube piece (11) is assigned to the base element (10),
characterized,
that the height (H 1 ) of the base element (10) together with the height (H 2 ) of the flow divider (12) is greater than the height (L 1 ) of an outlet opening (8, 8 ').
dadurch gekennzeichnet,
daß das Bodenelement (10) in Richtung der Austrittsöffnungen (8, 8') die Raumform eines nach gegenüberliegenden Seiten verjüngten Keiles besitzt.Immersion pouring tube according to one or more of claims 1 to 4,
characterized,
that the bottom element (10) in the direction of the outlet openings (8, 8 ') has the spatial shape of a wedge tapered on opposite sides.
dadurch gekennzeichnet,
daß das Bodenelement (10) in Richtung der Austrittsöffnungen (8, 8') die Raumform einer konkaven, bevorzugt eine Polynomfunktion mindestens zweiter Ordnung definierenden Kurve besitzt. Immersion pouring tube according to one or more of claims 1 to 5,
characterized,
that the base element (10) in the direction of the outlet openings (8, 8 ') has the spatial shape of a concave curve, preferably defining a polynomial function of at least second order.
dadurch gekennzeichnet,
daß die Strömungsteiler (12) als Strömungsletkörper mit rechteckigem oder trapezförmigem Querschnitt ausgebildet sind, deren Breite (b) und/oder Höhe (h) über die Länge (L) des Rohrstücks (11) veränderlich ist.Immersion pouring tube according to one or more of claims 1 to 6,
characterized,
that the flow dividers (12) are designed as flow bodies with a rectangular or trapezoidal cross-section, the width (b) and / or height (h) of which can be varied over the length (L) of the pipe section (11).
dadurch gekennzeichnet,
daß die Strömungsleitkörper (12) die Höhe (L1) der Austrittsöffnungen (8, 8') überragen.Immersion pouring tube according to one or more of claims 1 to 7,
characterized,
that the flow guide body (12) protrude the height (L 1 ) of the outlet openings (8, 8 ').
dadurch gekennzeichnet,
daß das Bodenelement (10) mit den Strömungsleitkörpern (12) an Kanten und/oder Flächenübergängen Verrundungen aufweist.Immersion pouring tube according to one or more of claims 1 to 8,
characterized,
that the bottom element (10) with the flow guide bodies (12) has rounded edges and / or surface transitions.
dadurch gekennzeichnet,
daß das Bodenelement (10) mit den Strömungsleitkörpern (12) in dessen Matrix eingebettet oder ein austauschbares Einzelelement ist.Immersion pouring tube according to one or more of claims 1 to 9,
characterized,
that the bottom element (10) with the flow guide bodies (12) is embedded in its matrix or is an exchangeable individual element.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853723 | 1998-11-20 | ||
| DE19853723 | 1998-11-20 | ||
| DE19908346 | 1999-02-26 | ||
| DE19908346A DE19908346A1 (en) | 1998-11-20 | 1999-02-26 | Immersion pouring tube for introducing melt into a mold for continuous casting, in particular of flat products |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1002600A2 true EP1002600A2 (en) | 2000-05-24 |
| EP1002600A3 EP1002600A3 (en) | 2001-04-04 |
| EP1002600B1 EP1002600B1 (en) | 2004-01-21 |
Family
ID=26050298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99122176A Expired - Lifetime EP1002600B1 (en) | 1998-11-20 | 1999-11-05 | Submerged nozzle for feeding molten metal into a mould for the continuous casting of thin material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1002600B1 (en) |
| AT (1) | ATE258088T1 (en) |
| ES (1) | ES2214796T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127408A (en) * | 2014-06-11 | 2015-12-09 | 维苏威坩埚公司 | Thin slab nozzle for distributing high mass flow rates |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482423A1 (en) * | 1990-10-15 | 1992-04-29 | Sms Schloemann-Siemag Aktiengesellschaft | Immersion casting pipe for the introduction of molten steel in a continuous casting mould |
| DE4142447A1 (en) * | 1991-06-21 | 1992-12-24 | Mannesmann Ag | DIVE PIPE - DUENBREAD |
| WO1995029025A1 (en) * | 1994-04-25 | 1995-11-02 | Vesuvius Usa | Submergent entry nozzle |
| EP0709153A1 (en) * | 1994-09-30 | 1996-05-01 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Discharge nozzle for a crystalliser for continuous casting of slabs |
| WO1997048512A1 (en) * | 1996-06-19 | 1997-12-24 | Giovanni Arvedi | Submerged nozzle for the continuous casting of thin slabs |
-
1999
- 1999-11-05 AT AT99122176T patent/ATE258088T1/en active
- 1999-11-05 EP EP99122176A patent/EP1002600B1/en not_active Expired - Lifetime
- 1999-11-05 ES ES99122176T patent/ES2214796T3/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482423A1 (en) * | 1990-10-15 | 1992-04-29 | Sms Schloemann-Siemag Aktiengesellschaft | Immersion casting pipe for the introduction of molten steel in a continuous casting mould |
| DE4142447A1 (en) * | 1991-06-21 | 1992-12-24 | Mannesmann Ag | DIVE PIPE - DUENBREAD |
| WO1995029025A1 (en) * | 1994-04-25 | 1995-11-02 | Vesuvius Usa | Submergent entry nozzle |
| EP0709153A1 (en) * | 1994-09-30 | 1996-05-01 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Discharge nozzle for a crystalliser for continuous casting of slabs |
| WO1997048512A1 (en) * | 1996-06-19 | 1997-12-24 | Giovanni Arvedi | Submerged nozzle for the continuous casting of thin slabs |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127408A (en) * | 2014-06-11 | 2015-12-09 | 维苏威坩埚公司 | Thin slab nozzle for distributing high mass flow rates |
| WO2015189742A1 (en) * | 2014-06-11 | 2015-12-17 | Arvedi Steel Engineering S.P.A. | Thin slab nozzle for distributing high mass flow rates |
| CN105127408B (en) * | 2014-06-11 | 2019-02-01 | 维苏威美国公司 | For distributing the sheet billet mouth of a river of high mass flow |
| RU2679664C2 (en) * | 2014-06-11 | 2019-02-12 | Арведи Стил Энджиниринг С.П.А. | Nozzle for molding thin slabs for distributing molten metal at high mass-flow rate |
| US10569326B2 (en) | 2014-06-11 | 2020-02-25 | Arvedi Steel Engineering S.P.A. | Thin slab nozzle for distributing high mass flow rates |
| TWI691371B (en) * | 2014-06-11 | 2020-04-21 | 美商維蘇威美國公司 | Thin slab nozzle for distributing high mass flow rates |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2214796T3 (en) | 2004-09-16 |
| EP1002600A3 (en) | 2001-04-04 |
| ATE258088T1 (en) | 2004-02-15 |
| EP1002600B1 (en) | 2004-01-21 |
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