EP0984838B1 - Submerged nozzle for slab continuous casting moulds - Google Patents
Submerged nozzle for slab continuous casting moulds Download PDFInfo
- Publication number
- EP0984838B1 EP0984838B1 EP98934799A EP98934799A EP0984838B1 EP 0984838 B1 EP0984838 B1 EP 0984838B1 EP 98934799 A EP98934799 A EP 98934799A EP 98934799 A EP98934799 A EP 98934799A EP 0984838 B1 EP0984838 B1 EP 0984838B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slot
- submerged nozzle
- sleeve
- submerged
- mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009749 continuous casting Methods 0.000 title claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 2
- 238000007654 immersion Methods 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000009189 diving Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
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
- B22D41/52—Manufacturing or repairing thereof
-
- 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 an immersion nozzle upstream of a continuous casting mold metallurgical vessel, which is designed as a one-piece component and in the mouth area has a slit-shaped pouring opening that is several times longer than width has.
- a submerged nozzle for continuous casting molds which consists of there is at least two components, the part protruding into the continuous casting mold in a plane perpendicular to this is narrow and there is a length-width ratio in the mouth region from 20: 1 to 80: 1.
- the upper as well as the lower longitudinal section are special to manufacture divisible core segments here.
- the invention has set itself the goal of a diving spout for a To create slab caster, which has a structurally simple structure and the metal melt with low turbulence and a long service life Penetration depth into a slab casting mold.
- the immersion spout configured as a cylinder has a bottom continuous slot that protrudes into the side wall.
- the cross-sectional shape of the cylinder can be circular, oval or bone-shaped, i.e. with an oval shape provided with a bulge.
- the bottom of the cylindrical immersion nozzle is included shaped like a bowl.
- the floor is beveled and runs out in a wedge shape towards the slot.
- the slot basically has side walls arranged parallel to one another.
- the slit-shaped pouring opening is wedge-shaped designed with the size opening in the center of the slot.
- the slot-shaped pouring opening in the region of the side wall is the embodiment wider than in the muzzle center.
- the shape of the guidance of the side wall follows a curve shape in the area of the floor on both sides of the central axis Has turning points.
- the extension of the slot in the side walls is in one particularly advantageous embodiment changeable. The change in length can can be achieved in stages by inserts in the bottom of the slot are insertable.
- a continuous change in the slot length is achieved by a sleeve that slidably envelops the diving spout.
- the length of the sleeve is either like this measure briefly that the complete sleeve is also immersed in the melt.
- the sleeve has a length that ends up close to protrudes metallurgical vessel, being between the sleeve and the immersion spout Sealants are provided to allow a flow of mis-air into the liquid melt avoid.
- the sleeve is on beveled at the end of its mouth and rotatable in addition to the axial displacement executed.
- the liquid melt leaves the immersion spout during operation in a shape and speed which allows particularly low penetration of the supplied melt into those already in the mold. This results in very little turbulence.
- the melt volumes combine in a particularly short time and flow in the form of a piston flow with the specified withdrawal speed in the steel strand encased by the strand shell.
- the upstream immersion nozzle is suitable for slabs and billets, since the melt emerging from the immersion nozzle has only a small kinetic energy has.
- the melt leaving the immersion tube through the slot has one cloud-like spread on in all directions only a small depth of penetration has.
- the steel produced in this way has a particular degree of purity.
- FIG. 1 shows a section through the immersion nozzle in the upper part. It is from Melting vessel 11 only as a detail, the metallic jacket 12 and the Refractory lining 13 shown. In the area of the outlet opening 14 is a Perforated stone is provided through which an immersion nozzle 21 is guided.
- the immersion spout 21 has a slot 23 in the bottom 28 Pouring opening 22.
- FIG. 1 there is a section through the slot in the upper left part 23 and in the right part of the figure the view through the slot 23.
- the immersion spout 21 is enveloped by a sleeve 41.
- the sleeve 41 has a relatively short length (h h ), so that the sleeve is completely immersed in the melt S of the mold 31 during operation.
- the mold 31 has a broad side 32 and a narrow side 34 and can be filled with melt S up to a level 35.
- the sleeve has a length h H and thus protrudes from the liquid melt L.
- a sealant 43 is provided, which adheres to the Outer wall of the immersion nozzle 21 rejects and a displacement of the sleeve relatively to the spout.
- the end of the sleeve 41 is chamfered at an angle ⁇ . Go berserk The sleeve allows both slot ends to be specified in their length to change.
- the section BB of the immersion pouring tube is shown.
- A) shows one circular cross section, b) a circular oval cross section, i.e. an oval with two Semicircles whose centers are arranged at a distance c and whose Longitudinal side walls parallel to touch the semicircles tangentially, and c) one bone-shaped cross-section, i.e. an oval cross-section with a recess with the distance 2Q so equal to the diameter of the circular sections with the radius p.
- the slot arrangement is arbitrary, it is with the circular oval spout in example b) through the parallel side walls guided.
- the slit is in the area of contact between the two Circular parts provided.
- the slot has the length L and has a width b in its base.
- the width b can become zero as far as the slot 23 is conical in the direction of the mouth opens at an angle ⁇ .
- an insert 42 is introduced in the base of the slot 23, with which the slot length L can be shortened in stages.
- View AA is shown in the lower part of FIG.
- the slot 26 points in the area of the muzzle center M an expansion 26 with its size width b in Muzzle Center M.
- FIG. 3 shows a diving spout 21, which is a wedge in the mouth area is executed.
- the bottom 28 shows the slope 25 from a view, which is below the Angle ⁇ to the central axis I is inclined.
- the view c) shown with a view against the slope 25 of the bottom 28.
- the view AA is guided with a slot 23 which for Center M becomes narrower.
- the taper is straight under one Angle ⁇ to the central axis I.
- the contour runs in the right part of the picture curved and has turning points W on both sides of the center.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Die Erfindung betrifft einen Tauchausguß eines einer Stranggießkokille vorgeschalteten metallurgischen Gefäßes, der als einteiliges Bauteil ausgestaltet ist und im Mündungsbereich eine schlitzförmige Ausgießöffnung aufweist, die eine mehrfach größere Länge als Breite besitzt.The invention relates to an immersion nozzle upstream of a continuous casting mold metallurgical vessel, which is designed as a one-piece component and in the mouth area has a slit-shaped pouring opening that is several times longer than width has.
Ein Tauchausguss dieser Art ist aus der EP 0 648 561 A1 bekannt.A diving spout of this type is known from EP 0 648 561 A1.
Aus DE 37 09 188 C2 ist ein Tauchausguß für Stranggießkokillen bekannt, der aus mindestens zwei Bauteilen besteht, wobei der in die Stranggießkokille hineinragende Teil in einer hierzu senkrechten Ebene schmal ist und dabei im Mündungsbereich ein Längen-Breitenverhältnis von 20:1 bis 80:1 aufweist.From DE 37 09 188 C2 a submerged nozzle for continuous casting molds is known which consists of there is at least two components, the part protruding into the continuous casting mold in a plane perpendicular to this is narrow and there is a length-width ratio in the mouth region from 20: 1 to 80: 1.
In aufwendiger Weise sind der obere wie auch der untere Längenabschnitt mit besonderen hier teilbaren Kernsegmenten herzustellen.In an elaborate manner, the upper as well as the lower longitudinal section are special to manufacture divisible core segments here.
Aus DE-OS 24 28 060 ist ein kontinuierliches Stahlstranggießverfahren bekannt, bei dem Stahl über ein Gießrohr in eine im wesentlichen rechteckige Kokille geleitet wird. Das Gießrohr besitzt dabei seitliche nach unten gerichtete Austrittsöffnungen.From DE-OS 24 28 060 a continuous steel casting process is known in which Steel is passed through a pouring tube into a substantially rectangular mold. The The pouring tube has lateral downward openings.
In nachteiliger Weise ist im Mündungszentrum ein Strömungsteiler vorgesehen, durch den bei geringsten Unregelmäßigkeiten der Stahlstrom bevorzugt in eine Richtung abgelenkt wird und darüber hinaus ein zentrales Einströmen des Stahls unterbunden wird.A flow divider through which is disadvantageously provided in the mouth center with the slightest irregularities, the steel flow is preferably deflected in one direction and furthermore a central inflow of steel is prevented.
Aus US-PS 3,991,815 ist ein Gießrohr bekannt, das im Mündungsbereich eine flaschenhalsförmige Verengung aufweist und neben der zentralen Ausströmöffnung an den Seiten rückwärts gerichtete Bohrungen besitzt. Dieses im wesentlichen für Knüppelanlagen vorgesehene Tauchgießrohr teilt den Strom in nachteiliger Weise in drei voneinander unabhängige Einzelströme.From US-PS 3,991,815 a pouring tube is known, which in the mouth area bottle neck-shaped constriction and next to the central outflow opening has rear-facing holes on the sides. This essentially for Dip tube provided in stick systems disadvantageously divides the current into three independent individual flows.
Die Erfindung hat sich das Ziel gesetzt, einen Tauchausguß für eine Brammenstranggießanlage zu schaffen, der einen konstruktiv einfachen Aufbau besitzt und der bei hoher Lebensdauer die Metallschmelze mit geringer Turbulenz sowie Eindringtiefe in eine Brammenstranggießkokille führt.The invention has set itself the goal of a diving spout for a To create slab caster, which has a structurally simple structure and the metal melt with low turbulence and a long service life Penetration depth into a slab casting mold.
Die Erfindung erreicht dieses Ziel durch die technischen Merkmale des Anspruchs 1 und des Anspruchs 9.The invention achieves this goal through the technical features of Claim 1 and Claim 9.
Erfindungsgemäß weist der als Zylinder ausgestaltete Tauchausguß im Boden einen durchgängigen Schlitz auf, der bis in die Seitenwandung hineinragt. Die Querschnittsform des Zylinders kann dabei kreisrund, oval oder auch knochenförmig, d.h. mit einer Ausbeulung versehenen ovalen Form, versehen sein.According to the invention, the immersion spout configured as a cylinder has a bottom continuous slot that protrudes into the side wall. The The cross-sectional shape of the cylinder can be circular, oval or bone-shaped, i.e. with an oval shape provided with a bulge.
Nach einer Erfindung ist der Boden des zylinderförmigen Tauchausgußes dabei kümpelförmig ausgestaltet. Gemäss der zweiten Erfindung ist der Boden abgeschrägt und läuft dabei keilförmig in Richtung Schlitz aus.According to one invention, the bottom of the cylindrical immersion nozzle is included shaped like a bowl. According to the second invention, the floor is beveled and runs out in a wedge shape towards the slot.
Der Schlitz besitzt grundsätzlich gerade parallel zueinander angeordnete Seitenwände. In einer vorteilhaften Ausgestaltung ist die schlitzförmige Ausgießöffnung keilförmig ausgestaltet mit der Größenöffnung im Zentrum des Schlitzes. In einer weiteren Ausgestaltung ist die schlitzförmige Ausgießöffnung im Bereich der Seitenwandung breiter als im Mündungszentrum. Die Form der Führung der Seitenwandung folgt dabei einer Kurvenform, die im Bereich des Bodens zu beiden Seiten der Mittenachse Wendepunkte aufweist. Die Erstreckung des Schlitzes in den Seitenwänden ist in einer besonders vorteilhaften Ausgestaltung veränderbar. Die Änderung der Länge kann stufenförmig durch Einsatzstücke erreicht werden, die in den Grund des Schlitzes einlegbar sind.The slot basically has side walls arranged parallel to one another. In an advantageous embodiment, the slit-shaped pouring opening is wedge-shaped designed with the size opening in the center of the slot. In another The slot-shaped pouring opening in the region of the side wall is the embodiment wider than in the muzzle center. The shape of the guidance of the side wall follows a curve shape in the area of the floor on both sides of the central axis Has turning points. The extension of the slot in the side walls is in one particularly advantageous embodiment changeable. The change in length can can be achieved in stages by inserts in the bottom of the slot are insertable.
Eine stufenlose Veränderung der Schlitzlänge wird durch eine Hülse erreicht, die verschiebbar den Tauchausguß umhüllt. Die Länge der Hülse ist dabei entweder so kurz bemessen, daß die komplette Hülse mit in die Schmelze eingetaucht wird. In einer anderen Ausgestaltung weist die Hülse eine Länge auf, die einenends bis nahe an das metallurgische Gefäß heranragt, wobei zwischen der Hülse und dem Tauchausguß Dichtmittel vorgesehen sind, um einen Strom von Fehlluft in die Flüssigschmelze zu vermeiden.A continuous change in the slot length is achieved by a sleeve that slidably envelops the diving spout. The length of the sleeve is either like this measure briefly that the complete sleeve is also immersed in the melt. In a another embodiment, the sleeve has a length that ends up close to protrudes metallurgical vessel, being between the sleeve and the immersion spout Sealants are provided to allow a flow of mis-air into the liquid melt avoid.
Zur Beeinflußung der Schlitzlänge an beiden Enden des Schlitzes wird die Hülse an ihrem Mündungsende abgeschrägt und neben der axialen Verschiebung noch drehbar ausgeführt.To influence the slot length at both ends of the slot, the sleeve is on beveled at the end of its mouth and rotatable in addition to the axial displacement executed.
Durch die besonders simple Form des Tauchausgußes mit seiner zylinderförmigen Wand kann in besonderer Weise Einfluß auf die Herstellung der Körper Einfluß genommen werden.Due to the particularly simple shape of the immersion nozzle with its cylindrical shape Wall can influence the manufacture of the body in a special way be taken.
Durch die erfindungsgemäß vorgeschlagene Ausgestaltung des Bodens mit dem
durchgehenden Schlitz verläßt während des Betriebes die Flüssigschmelze den
Tauchausguß in einer Form und Geschwindigkeit, die ein besonders geringes
Eindringen der zugeführten Schmelze in die bereits in der Kokille befindlichen zuläßt.
Hierdurch kommt es nur zu ganz geringen Turbulenzen.
Die Schmelzenvolumina vereinigen sich in besonders kurzer Zeit und strömen in Form
einer Kolbenströmung mit der vorgegebenen Abzugsgeschwindigkeit im von der
Strangschale umhüllten Stahlstrang. Due to the design of the bottom with the continuous slot proposed according to the invention, the liquid melt leaves the immersion spout during operation in a shape and speed which allows particularly low penetration of the supplied melt into those already in the mold. This results in very little turbulence.
The melt volumes combine in a particularly short time and flow in the form of a piston flow with the specified withdrawal speed in the steel strand encased by the strand shell.
Der vorgeschaltete Tauchausguß ist dabei für Brammen und Knüppel geeignet, da die aus dem Tauchausguß austretende Schmelze nur eine geringe kinetische Energie besitzt. Die über den Schlitz das Tauchgießrohr verlassende Schmelze weist eine wolkenartige Ausbreitung auf, die in alle Richtungen nur eine geringe Eindringtiefe besitzt.The upstream immersion nozzle is suitable for slabs and billets, since the melt emerging from the immersion nozzle has only a small kinetic energy has. The melt leaving the immersion tube through the slot has one cloud-like spread on in all directions only a small depth of penetration has.
Nach einer kurzen Strömungsstrecke nimmt die dem Sumpf zuströmende Frischschmelze die Form einer Kolbenströmung an und dies hat positive Auswirkungen auf die Qualität des Produktes, insbesondere auf die Reinheit des Stahles. Weiterhin wird die Homogenität verbessert und Verunreinigungen werden vermindert.After a short stretch of flow, the one that flows into the swamp takes off Fresh melt in the form of a piston flow and this has positive Effects on the quality of the product, especially on the purity of the Stole it. Furthermore, the homogeneity is improved and impurities reduced.
Der so erzeugte Stahl weist einen besonderen Reinheitsgrad auf.The steel produced in this way has a particular degree of purity.
Eine weitere Folge der nur geringen Eindringtiefe in den Sumpf ist die Möglichkeit, bei einem Qualitätswechsel während des Abgießens auf der Stranggießanlage eine nur geringe Mischungslänge zu bewirken und damit ein nur kurzes Stück nicht gewollter Brammenstahlqualität zu erzeugen.Another consequence of the low depth of penetration into the swamp is the possibility of a quality change during casting on the continuous caster is only one to cause short mixture length and thus a short piece of unwanted To produce slab steel quality.
Ein Beispiel der Erfindung ist in der beigefügten Zeichnung dargelegt. Dabei zeigen die
- Figur 1
- Einen Schnitt durch einen Tauchausguß.
- Figur 2
- Kümpelboden.
- Figur 3
- Keilförmiger Boden.
- Figure 1
- A cut through a diving spout.
- Figure 2
- Kümpelboden.
- Figure 3
- Wedge-shaped bottom.
Die Figur 1 zeigt im oberen Teil einen Schnitt durch den Tauchausguß. Dabei ist vom
Schmelzengefäß 11 nur als Detail, der metallische Mantel 12 und die
Feuerfestauskleidung 13 dargestellt. Im Bereich der Austrittsöffnung 14 ist ein
Lochstein vorgesehen, durch den ein Tauchausguß 21 geführt ist.1 shows a section through the immersion nozzle in the upper part. It is from
Der Tauchausguß 21 besitzt im Boden 28 eine als Schlitz 23 ausgestaltete
Ausgießöffnung 22. In der Figur 1 ist im linken oberen Teil ein Schnitt durch den Schlitz
23 dargestellt und im rechten Teil der Figur die Sicht durch den Schlitz 23. The
Der Tauchausguß 21 wird umhüllt von einer Hülse 41. Im linken Teil des Bildes weist
die Hülse 41 eine relativ kurze Länge (hh) auf, so daß während des Betriebes die
Hülse vollständig in die Schmelze S der Kokille 31 eintaucht. Die Kokille 31 besitzt
dabei eine Breitseite 32 und eine Schmalseite 34 und ist mit Schmelze S bis zu einem
Pegel 35 füllbar.The
Im rechten Teil des Bildes weist die Hülse eine Länge hH auf und ragt damit aus der Flüssigschmelze L heraus.In the right part of the picture, the sleeve has a length h H and thus protrudes from the liquid melt L.
Am vorderen Ende der Hülse 41 ist ein Dichtmittel 43 vorgesehen, das sich an die
Außenwand des Tauchausgußes 21 lehnt und eine Verschiebung der Hülse relativ
zum Tauchausguß zuläßt.At the front end of the
An der Hülse ist eine Verschiebeeinrichtung 44 und eine Dreheinrichtung 45
angeordnet, mit welcher die Hülse 41 in eine beliebige Position zum Tauchausguß 21
bringbar ist.There is a
Die Hülse 41 ist mündungsendig unter einem Winkel ε abgeschrägt. Durch Drehen
der Hülse lassen sich beide Schlitzenden in einem vorgebbaren Maße in ihrer Länge
ändern.The end of the
In Figur 1.1. ist der Schnitt BB des Tauchgießrohres dargestellt. Dabei zeigt a) einen kreisrunden Querschnitt, b) einen kreisovalen Querschnitt, d.h. ein Oval mit zwei Halbkreisen, deren Mittelpunkte im Abstand c angeordnet sind und deren Längsseitenwände parallel geführt die Halbkreise tangential berühren, und c) einen knochenförmigen Querschnitt, also einen ovalen Querschnitt mit einer Einbuchtung mit der Distanz 2Q also gleich zum Durchmesser der Kreisabschnitte mit dem Radius p.In Figure 1.1. the section BB of the immersion pouring tube is shown. A) shows one circular cross section, b) a circular oval cross section, i.e. an oval with two Semicircles whose centers are arranged at a distance c and whose Longitudinal side walls parallel to touch the semicircles tangentially, and c) one bone-shaped cross-section, i.e. an oval cross-section with a recess with the distance 2Q so equal to the diameter of the circular sections with the radius p.
Während beim kreisförmigen Zylinder die Schlitzanordnung beliebig ist, ist sie bei dem kreisovalen Tauchausguß im Beispiel b) durch die parallelen Seitenwände geführt. Bei der Knochenform ist der Schlitz in dem Bereich der Berührung der beiden Kreisteile vorgesehen. While with the circular cylinder the slot arrangement is arbitrary, it is with the circular oval spout in example b) through the parallel side walls guided. In the bone shape, the slit is in the area of contact between the two Circular parts provided.
In der Figur 2 ist der Boden 28 des Tauchausgußes 21 gekümpelt, so daß beidseitig
des Schlitzes 23 Viertelhohlkugeln 24 vorhanden sind.In Figure 2, the bottom 28 of the
Der Schlitz hat die Länge L und weist in seinem Grund eine Breite b auf. Die Breite b
kann zu Null werden, soweit der Schlitz 23 sich in Richtung Mündung konisch unter
einem Winkel γ öffnet.The slot has the length L and has a width b in its base. The width b
can become zero as far as the
Im vorliegenden Fall ist im Grund des Schlitzes 23 ein Einsatzstück 42 eingebracht,
mit dem die Schlitzlänge L stufig verkürzbar ist.In the present case, an
Im unteren Teil der Figur 2 ist die Sicht AA dargestellt. Der Schlitz 26 weist im Bereich
des Mündungszentrums M eine Aufweitung 26 mit seiner Größenbreite b im
Mündungszentrum M.View AA is shown in the lower part of FIG. The
in der Figur 3 ist ein Tauchausguß 21 dargestellt, der im Mündungsbereich als Keil
ausgeführt ist. Der Boden 28 zeigt von einer Sicht die Schräge 25, die sich unter dem
Winkel α zur Mittenachse I hin sich neigt. Im linken Teil des oberen Bildes ist die Sicht
c) dargestellt mit Blick gegen die Schräge 25 des Bodens 28.FIG. 3 shows a
im unteren Teil der Figur 3 ist die Sicht AA geführt mit einem Schlitz 23, der zum
Zentrum M hin enger wird. Im linken Teil ist die Verjüngung geradlinig unter einem
Winkel δ zur Mittenachse I geführt. Im rechten Teil des Bildes verläuft die Kontur
kurvenförmig und besitzt zu beiden Seiten des Mittelpunktes Wendepunkte W. in the lower part of Figure 3, the view AA is guided with a
- 1111
- Schmelzengefäßmelting vessel
- 1212
- Mantelcoat
- 1313
- FeuerfestauskleidungRefractory lining
- 1414
- Austrittsöffnungoutlet opening
- 2121
- TauchausgußA submerged nozzle
- 2222
- Ausgießöffnungpouring
- 2323
- Schlitzslot
- 2424
- ViertelhohlkugelQuarter hollow sphere
- 2525
- Schrägeslope
- 2626
- Aufweitungwidening
- 2828
- Bodenground
- 2929
- SeitenwandSide wall
- 3131
- Kokillemold
- 3232
- Breitseitebroadside
- 3333
- Innenwandunginner wall
- 3434
- Schmalseitenarrow side
- 3535
- Pegellevel
- 4141
- Hülseshell
- 4242
- Einsatzstückinsert
- 4343
- Dichtmittelsealant
- 4444
- Verschiebeeinrichtungshifter
- 4545
- Dreheinrichtungrotator
- II
- Hauptachsemain axis
- LL
- Schlitzlängeslot length
- SS
- Schmelzemelt
- hH
-
Höhe der Hülse 41Height of the
sleeve 41 - hh, hH h h , h H
-
Höhe der Hülse 41Height of the
sleeve 41 - MM
- Mündungszentrummouth center
- bb
- Schlitzbreiteslot width
- αα
- Winkel des keilförmigen Bodens zur HauptachseAngle of the wedge-shaped bottom to the main axis
- ββ
- Winkel Wandung Schlitz zur Mittenachse (öffnend)Angle wall slot to the central axis (opening)
- δδ
- Winkel Schlitz zur Mittenachse (verengend)Angle slot to the center axis (narrowing)
- εε
- Winkel der Schräge der HülsenmündungAngle of the slope of the sleeve mouth
Claims (16)
- A submerged nozzle of a metallurgical vessel connected upstream of a continuous casting mould, the submerged nozzle being formed as a one-piece component and, in the mouth region, having a slot-type discharge opening (22) of a length several times greater than its width, wherein the submerged nozzle (21) has a cylindrical form with a circular (R), oval (r and c) or bone-shaped (p and q) cross-sectional shape, and the slot-type discharge opening (22) is formed as a continuous slot (23) extending in the base (28) and into the side wall (29) of the cylindrical part of the submerged nozzle (21), and wherein the base (28) is dish-shaped and constructed from two hollow quarter-spheres (24) arranged on either side of the slot-type opening (23), which has a constant width (b) of b = 0.075 to 0.15 × R, and the slot-type opening (23) in the mouth centre (M) has a slot-type opening (26) deviating from the width (b).
- A submerged nozzle according to claim 1, characterised in that the slot-type opening (23) in the centre (M) of the submerged-nozzle mouth has an expansion (26) in the shape of a notch with a widening angle (γ) of γ = 3° to 12°.
- A submerged nozzle according to claim 1, characterised in that the slot-type opening (23) in the mouth centre (M) has a constriction, the edges of the slot being conically arranged relative to one another at an angle (δ) of δ < 8°.
- A submerged nozzle according to claim 3 or 4, characterised in that the expansion (26) or constriction follows a curved shape having an inflection point (W).
- A submerged nozzle according to any one of the preceding claims, characterised in that the slot-type opening (23) in the wall of the tubular part of the submerged nozzle (21) has a length (L), starting from the mouth centre (M), of L = 0.2 to 0.7 * di, where di = 2 * R = inner diameter.
- A submerged nozzle according to any one of the preceding claims, characterised in that the submerged nozzle (21) is surrounded by a sleeve (41) having a height (hh) of hh > 0.5 * da, where da = outer diameter of the submerged nozzle, and in that means are provided by which the sleeve is displaceable so that part of the slot regions extending into the side wall of the submerged nozzle can be covered.
- A submerged nozzle according to claim 7 [sic], characterised in that the sleeve (41) has a length (hH) corresponding substantially to the length (LT) of the submerged nozzle (21) minus the slot length (L), and in that sealing means (43) are provided between the outer wall of the submerged nozzle (21) and the inner wall of the sleeve (41).
- A submerged nozzle according to either one of claims 7 and 8 [sic], characterised in that the mouth of the sleeve is slanted with an angle of inclination ε of ε = 5° to 20°, and in that the sleeve is rotatable about its principal axis (I).
- A submerged nozzle of a metallurgical vessel connected upstream of a continuous casting mould, the submerged nozzle being formed as a one-piece component and, in the mouth region, having a slot-type discharge opening of a length several times greater than its width, wherein the submerged nozzle (21) has a cylindrical form with a circular (R), oval (r and c) or bone-shaped (p and q) cross-sectional shape, and the slot-type discharge opening (22) is formed as a continuous slot (23) extending in the base (28) and into the side wall (29) of the cylindrical part of the submerged nozzle (21), and wherein the base (28) is slanted on both sides of the slot-type opening (23) and the slants (25) are inclined at an angle α of 30° to 70° to the principal axis (I) and the slot-type opening (23) has a constant width (b) of b = 0.075 to 0.15 × R, and the slot-type opening (23) in the mouth centre (M) has a slot-type opening (26) deviating from the width (b).
- A submerged nozzle according to claim 9, characterised in that the slot-type opening (23) in the centre (M) of the submerged-nozzle mouth has an expansion (26) in the shape of a notch with a widening angle (γ) of γ = 3° to 12°.
- A submerged nozzle according to claim 9, characterised in that the slot-type opening (23) in the mouth centre (M) has a constriction, the edges of the slot being conically arranged relative to one another at an angle (δ) of δ < 8°.
- A submerged nozzle according to claim 11, characterised in that the expansion (26) or constriction follows a curved shape having an inflection point (W).
- A submerged nozzle according to any one of the preceding claims 9 to 12, characterised in that the slot-type opening (23) in the wall of the tubular part of the submerged nozzle (21) has a length (L), starting from the mouth centre (M), of L = 0.2 to 0.7 * di, where di = 2 * R = inner diameter.
- A submerged nozzle according to any one of the preceding claims 9 to 13, characterised in that the submerged nozzle (21) is surrounded by a sleeve (41) having a height (hh) of hh > 0.5 * da, where da = outer diameter of the submerged nozzle, and in that means are provided by which the sleeve is displaceable so that part of the slot regions extending into the side wall of the submerged nozzle can be covered.
- A submerged nozzle according to claim 14, characterised in that the sleeve (41) has a length (hH) corresponding substantially to the length (LT) of the submerged nozzle (21) minus the slot length (L), and in that sealing means (43) are provided between the outer wall of the submerged nozzle (21) and the inner wall of the sleeve (41).
- A submerged nozzle according to either one of claims 14 and 15, characterised in that the mouth of the sleeve is slanted with an angle of inclination ε of ε = 5° to 20°, and in that the sleeve is rotatable about its principal axis (I).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722890A DE19722890A1 (en) | 1997-05-28 | 1997-05-28 | Diving spout |
| DE19722890 | 1997-05-28 | ||
| PCT/DE1998/001438 WO1998053938A1 (en) | 1997-05-28 | 1998-05-20 | Submerged nozzle for slab continuous casting moulds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0984838A1 EP0984838A1 (en) | 2000-03-15 |
| EP0984838B1 true EP0984838B1 (en) | 2004-09-15 |
Family
ID=7831066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98934799A Expired - Lifetime EP0984838B1 (en) | 1997-05-28 | 1998-05-20 | Submerged nozzle for slab continuous casting moulds |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6336575B1 (en) |
| EP (1) | EP0984838B1 (en) |
| KR (1) | KR100537467B1 (en) |
| AU (1) | AU8431598A (en) |
| BR (1) | BR9810736A (en) |
| DE (2) | DE19722890A1 (en) |
| TW (1) | TW370477B (en) |
| WO (1) | WO1998053938A1 (en) |
| ZA (1) | ZA984536B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090134221A1 (en) * | 2000-11-24 | 2009-05-28 | Xiaoxun Zhu | Tunnel-type digital imaging-based system for use in automated self-checkout and cashier-assisted checkout operations in retail store environments |
| DE10203594C1 (en) * | 2002-01-23 | 2003-05-15 | Sms Demag Ag | Submerged nozzle for a metallurgical vessel located upstream of a casting device has a cross-section expanding from a circular inlet cross-section to an opening cross-section in the direction of its opening |
| DE102008058647A1 (en) * | 2008-11-22 | 2010-06-10 | Refractory Intellectual Property Gmbh & Co. Kg | submerged nozzle |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH547135A (en) * | 1972-04-14 | 1974-03-29 | Concast Ag | PROCESS FOR PASTING STEEL INTO A CONTINUOUS CASTING CLOTH AND A CASTING PIPE FOR CARRYING OUT THE PROCESS. |
| AT331437B (en) * | 1973-06-14 | 1976-08-25 | Voest Ag | CONTINUOUS STEEL CASTING PROCESS AND DEVICE FOR ITS IMPLEMENTATION |
| CH558689A (en) * | 1973-06-22 | 1975-02-14 | Concast Ag | METHOD AND DEVICE FOR PASTING STEEL THROUGH A CASTING PIPE INTO A CONTINUOUS CASTING COLLAR. |
| DE2358339B1 (en) * | 1973-11-23 | 1974-08-08 | Kloeckner-Werke Ag, 4100 Duisburg | Immersion nozzle for continuous casting devices |
| CH570217A5 (en) * | 1974-08-15 | 1975-10-31 | Koenig Peter | Continuous casting mould pouring tube - having slotted end after restricting refractory ring for better gas, metal mixing |
| US4220618A (en) * | 1978-07-26 | 1980-09-02 | M & T Manufacturing Company | Method of making a mold with a core supporting bushing |
| JPS63130257A (en) * | 1986-11-19 | 1988-06-02 | Kawasaki Refract Co Ltd | Production of immersion nozzle |
| DE3709188A1 (en) * | 1987-03-20 | 1988-09-29 | Mannesmann Ag | POURING PIPE FOR METALLURGICAL VESSELS |
| JP2778455B2 (en) * | 1993-10-13 | 1998-07-23 | 日本鋼管株式会社 | Immersion nozzle for continuous casting |
-
1997
- 1997-05-28 DE DE19722890A patent/DE19722890A1/en not_active Ceased
-
1998
- 1998-05-20 AU AU84315/98A patent/AU8431598A/en not_active Abandoned
- 1998-05-20 DE DE59811952T patent/DE59811952D1/en not_active Expired - Lifetime
- 1998-05-20 EP EP98934799A patent/EP0984838B1/en not_active Expired - Lifetime
- 1998-05-20 BR BR9810736-4A patent/BR9810736A/en not_active Application Discontinuation
- 1998-05-20 KR KR10-1999-7011046A patent/KR100537467B1/en not_active IP Right Cessation
- 1998-05-20 US US09/424,680 patent/US6336575B1/en not_active Expired - Lifetime
- 1998-05-20 WO PCT/DE1998/001438 patent/WO1998053938A1/en active IP Right Grant
- 1998-05-26 TW TW087108176A patent/TW370477B/en active
- 1998-05-27 ZA ZA984536A patent/ZA984536B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TW370477B (en) | 1999-09-21 |
| DE19722890A1 (en) | 1998-12-03 |
| WO1998053938A1 (en) | 1998-12-03 |
| BR9810736A (en) | 2000-09-12 |
| AU8431598A (en) | 1998-12-30 |
| ZA984536B (en) | 1998-12-03 |
| EP0984838A1 (en) | 2000-03-15 |
| KR100537467B1 (en) | 2005-12-16 |
| DE59811952D1 (en) | 2004-10-21 |
| KR20010013067A (en) | 2001-02-26 |
| US6336575B1 (en) | 2002-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3709188C2 (en) | ||
| EP0323958B1 (en) | Device for continuous casting of flat slabs | |
| WO1993000191A1 (en) | Immersion casting pipe for thin slabs | |
| DE69819931T2 (en) | immersion nozzle | |
| DE60005674T2 (en) | Baffle plate for intermediate vessel | |
| DE2442915A1 (en) | POUR PIPE WITH CLOSED BOTTOM AND OPPOSITE LATERAL OPENINGS | |
| EP0984838B1 (en) | Submerged nozzle for slab continuous casting moulds | |
| DE4436990C1 (en) | Immersed pouring pipe where the outer wall acts as a spacer | |
| DE2428060A1 (en) | CONTINUOUS STEEL CASTING PROCESS | |
| DE69015873T2 (en) | Controlling a cast stream. | |
| EP0630711B1 (en) | Immersion nozzle | |
| WO1981000067A1 (en) | Mold with core | |
| DE4116723C1 (en) | Immersion tundish outlet giving quiescent melt flow into mould - includes channel with nozzle shape at inlet to receive stopper, with narrowest section at transition to channel | |
| EP0900609B1 (en) | Submerged nozzle for feeding a molten metal from a casting vessel or a tundish into a mould | |
| DE2548585B2 (en) | DEVICE FOR CONTINUOUS STEEL CASTING | |
| DE3427756A1 (en) | Continuous casting mould for the production of strands made of steel | |
| EP0996514B1 (en) | Method and device for producing thin slabs | |
| EP0814929B1 (en) | Immersed outlet for casting metal | |
| EP0920936B1 (en) | Mould for continuous casting | |
| DE3509113C2 (en) | ||
| EP0902736B1 (en) | Process and device for pouring of steel from an immersion outlet | |
| DE2250048A1 (en) | Refractory pouring pipe for continuous casting of molten metals | |
| DE2304943A1 (en) | Refractory pouring pipe for pouring molten metals | |
| DE10113026C2 (en) | Immersion tube for pouring molten metal, especially molten steel | |
| DE69219745T2 (en) | Lining coating for vessels such as a ladle |
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: 19991013 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE FR GB IT LU NL |
|
| 17Q | First examination report despatched |
Effective date: 20000821 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB IT LU NL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040915 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040915 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040915 |
|
| REF | Corresponds to: |
Ref document number: 59811952 Country of ref document: DE Date of ref document: 20041021 Kind code of ref document: P |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050520 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050531 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20050616 |
|
| EN | Fr: translation not filed | ||
| BERE | Be: lapsed |
Owner name: *SMS DEMAG A.G. Effective date: 20050531 |
|
| BERE | Be: lapsed |
Owner name: *SMS DEMAG A.G. Effective date: 20050531 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130522 Year of fee payment: 16 Ref country code: GB Payment date: 20130521 Year of fee payment: 16 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20130527 Year of fee payment: 16 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59811952 Country of ref document: DE |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140520 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59811952 Country of ref document: DE Effective date: 20141202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140520 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20141202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140520 |