EP1116534A1 - Process an device for avoiding unwanted cooling of the edges of a cast sheet - Google Patents
Process an device for avoiding unwanted cooling of the edges of a cast sheet Download PDFInfo
- Publication number
- EP1116534A1 EP1116534A1 EP01100532A EP01100532A EP1116534A1 EP 1116534 A1 EP1116534 A1 EP 1116534A1 EP 01100532 A EP01100532 A EP 01100532A EP 01100532 A EP01100532 A EP 01100532A EP 1116534 A1 EP1116534 A1 EP 1116534A1
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- European Patent Office
- Prior art keywords
- strand
- spray
- nozzles
- running water
- cooling chamber
- 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.)
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- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000002631 hypothermal effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 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
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
Definitions
- the invention relates to a method and a device for preventing undesired cooling, in particular of the strip edge areas of a cast strand through with this from the bottom opening of a secondary cooling chamber escaping running water.
- a continuous caster for slabs according to DE-OS 2 208 928 at which the strand continuously from a water-cooled mold down is pulled out and guided by a support and guide device with rollers is provided that part of the cooling device of flat jet nozzles is formed, which is parallel to the surface of the strand, that is to the broad side of the Slabs are spaced from this, with their longitudinal axis parallel to the axes of the rollers. Furthermore, the well-known continuous caster before that the flat jet nozzles are arranged in the area of the slab edge and preferably on both slab edges offset from each other.
- the cooling device in the area of the deflection, that is to say about 1/3 to 2/3 of the longitudinal extent the support and guide device consists of flat jet nozzles.
- the cooling device should also be on the underside of the slab made of flat jet nozzles consist.
- DE-AS 1 558 194 describes a method and a device for cooling of a cast strand in a secondary cooling zone.
- the cast strand is cooled in zones, which are offset from one another transversely to the strand axis, with the proviso that the cooling effect in the zones of neighboring levels becomes one over the strand surface
- the cooling effect runs almost uniformly across the strand axis complete.
- DE-AS 1 289 956 discloses a secondary cooling device for straight surfaces Continuous castings. This consists of several arranged transversely to the strand axis Atomizer nozzles.
- the atomizer nozzles have a flat characteristic of the incident coolant quantity and are at such a distance of each adjacent nozzle, where the nozzle flanks are so far overlap that the cooling in the overlap area is only slightly the cooling of the surface parts lying outside the overlap deviates.
- the object of the invention is based on a method and a device suitable for carrying it out specify the way in which running water escapes from the secondary cooling chamber a continuous caster next to the strand and an accompanying one undesirable intensive hypothermia of the strand edges can be prevented can.
- the effectiveness of the method according to the invention is optimized to the extent necessary and the respective ratios of the strand production of a thin slab caster optimally considered.
- An embodiment of the method according to the invention provides that as a deflection medium Water or air or a water / air mixture is used. In order to is an even better adaptation of the process parameters to the respective Production conditions of a continuous caster reached.
- the method according to the invention provides that spray jets with flat Spray cones are generated.
- a spray jet of this form withdraws this Strand a minimum of heat, although it can't be avoided that too the strand is partially sprayed by the deflecting medium.
- Another embodiment of the method according to the invention provides that across rows partially overlapping on each side of an edge of the cast strand are generated by spray cones. This will provide complete coverage each side of an edge of the cast strand with sprays of the deflecting medium reached.
- Another embodiment of the method according to the invention provides that spray jets preferably at an angle ⁇ against the direction of the Run water are sprayed.
- the fact that the nozzles up, against the Spray towards the running water, the deflection of the running water is optimized.
- An advantageous embodiment of the method further provides that the edge areas of the cast strand at a comparatively short distance upstream sprayed into the bottom opening of the secondary cooling chamber. This makes it special favorable process parameters for the deflection of the running water from the Band edge areas achieved.
- the method according to the invention provides that the width of the line bridging arrangement of several nozzles in a row the narrow sides of a strand in accordance with changing strand width Nozzle pairs of the nozzle rows can be switched on or off. With it result spraying changeable zones in an uncomplicated and advantageous manner Band edge areas transverse to the strand axis, in accordance with the respective width of the strand.
- the invention provides that spray jets are approximately perpendicular be sprayed to the surface against band edge areas. This will be an optimal one Barrier effect against escaping running water generated without the broadsides of the strand hit in an undesirable manner by the spray jets and the strand edges are exposed to an undesirable cooling effect.
- Running water exiting from a secondary chamber comprises arranged in series Spray nozzles for generating high-energy, directed against the running water outlet Spray jets, the spray nozzles at a comparatively short distance upstream of that assigned to the cast strand on the secondary cooling chamber Bottom opening are arranged, and furthermore the spray nozzles to several in one row each in the direction of the strand width and each individually are connected to a feed line via throttle devices.
- Fig. 1 of a continuous casting plant with means for Implementation of the method according to the invention is shown in a side view, that the viewer looks at the narrow side of the cast strand 6.
- the purely schematic representation of this plant area shows the mold above 22, from which a cast strand 6 is drawn down according to arrow 21 becomes. In doing so, it runs through a strand guide that is only indicated as a black box 23 within a secondary cooling chamber, also shown as a black box 8.
- the purely schematic representation of strand guide 23 and cooling chamber 8 without specifying constructive details was for reasons of clarity chosen because it can be assumed that a specialist with the design constructive details of these elements is familiar.
- the lower area of the secondary cooling chamber 8 is the bottom 20 with the bottom opening 7, through which the strand 6 along with a stream of running water 9 down to exit.
- a supply line 24 for an out the spray nozzle 17 in the form of spray 10 emitted deflection medium At this can be water or air or a water / air mixture.
- the following is structured - in the top view of the Cooling chamber floor 20 considered - the next to the bottom opening 7 of the cooling chamber 8 for the sighted arrangement of spray nozzles 17 in an upper row of nozzles 25 and a lower row of nozzles 26.
- the spray jets 10 generated thereby individual partially overlapping spray cones 13 are oblique to the direction of travel 21 of the cast strand 6 in the area just above the cooling chamber floor 20 aligned.
- FIG. 3 in a side view with a view of the narrow side 16 of a cast strand 6 shows the spray jets 10 of the upper and lower Row of nozzles 25, 26 directed at an angle ⁇ against the direction of the running water 9. The deflection of the running water 9 is thereby optimized.
- the illustration further shows that towards the cast strand 6 and towards the bottom opening 7 sloping upward rising cooling chamber floor 20, which next to the Strand 6 keeps the bottom opening 7 open, particularly in the area thereof Flow of running water 9 is to be avoided with the help of the invention. This is achieved by the action of the high-energy spray jets 10, and by hitting the run water stream 9, the run water in the Drain openings 12 of the secondary cooling chamber on both sides of the cast strand 6 8 is derived.
- Figure 4 shows a further sectional view of the cooling chamber 8 in the sectional planes II. - II.
- Fig. 1 namely an arrangement of spray nozzles 17 in rows 15th for the formation of high-energy spray jets 10 at the belt edge regions 11 of the cast strand 6.
- the piping of the spray nozzles 17 is formed by supply lines 24, which sideways of the nozzle rows 15 each individually connected to throttling devices 1 to 5 are and in turn from a common feed line 18th going out.
- This representation shows in detail that the width of the Stranges 6 bridging arrangement, with several rows of nozzles 15 Narrow side areas 16 of the strand 6, individual pairs of nozzles 1, 1 '; 2, 2 '; 3, 3 '; etc. of the nozzle rows 15 in accordance with changing strand widths 19 or be switched off.
- band edge areas 11 can step by step the respective Be adapted to the circumstances.
- the illustration also shows the bottom opening 7 in the bottom of the cooling chamber 20.
- the variable width sections of the cast strand 6 are designated, which indicate a gradual change in the strand width.
- FIG. 5 shows an enlarged view and also a top view on a section along the plane II. - II. in Fig. 1 further functional elements, namely the strand 6, the bottom chamber 7, the cooling chamber bottom 20, the running water outlet 9 to be prevented in the area of the belt edges 11, and the arrangement of rows of nozzles 15 with spray nozzles 17.
- the supply lines to the nozzles 17 are identified overall by the reference number 24.
Abstract
Description
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Verhindern einer unerwünschten Abkühlung insbesondere der Bandkantenbereiche eines Gußstranges durch mit diesem aus der Bodenöffnung einer Sekundärkühlkammer austretendes Laufwasser.The invention relates to a method and a device for preventing undesired cooling, in particular of the strip edge areas of a cast strand through with this from the bottom opening of a secondary cooling chamber escaping running water.
Aus dem Betrieb von Stranggießanlagen für Dünnbrammen ist es bekannt, daß beim Austritt des Gußstranges aus der Sekundärkühlkammer seitlich neben dem Strang Laufwasser austritt und dabei eine unerwünscht intensive Unterkühlung der Strangkanten verursacht. Dieser Effekt wird um so stärker, je breiter das Gießformat und je größer die Gießgeschwindigkeit ist.From the operation of continuous casting plants for thin slabs, it is known that when the cast strand emerges from the secondary cooling chamber to the side of the Strand running water emerges and an undesirably intense hypothermia Strand edges caused. The wider the casting format, the stronger this effect becomes and the higher the casting speed.
Bei einer Stranggießanlage für Brammen entsprechend der DE-OS 2 208 928, bei welcher der Strang kontinuierlich aus einer wassergekühlten Kokille nach unten ausgezogen wird und durch eine Stütz- und Führungseinrichtung mit Rollen geführt wird, ist vorgesehen, daß ein Teil der Kühlvorrichtung von Flachstrahldüsen gebildet ist, die parallel zur Oberfläche des Stranges, das heißt zur Breitseite der Bramme im Abstand von dieser angeordnet sind, wobei ihre Längsachse parallel zu den Achsen der Rollen verlaufen. Weiterhin sieht die bekannte Strangießanlage vor, daß die Flachstrahldüsen im Bereich des Brammenrandes angeordnet sind und vorzugsweise an beiden Brammenrändern einander versetzt gegenüber liegen.In a continuous caster for slabs according to DE-OS 2 208 928, at which the strand continuously from a water-cooled mold down is pulled out and guided by a support and guide device with rollers is provided that part of the cooling device of flat jet nozzles is formed, which is parallel to the surface of the strand, that is to the broad side of the Slabs are spaced from this, with their longitudinal axis parallel to the axes of the rollers. Furthermore, the well-known continuous caster before that the flat jet nozzles are arranged in the area of the slab edge and preferably on both slab edges offset from each other.
Bei dieser Stranggießanlage mit einer bogenförmigen Stütz- und Führungseinrichtung zur Umlenkung des Stranges aus im wesentlichen vertikaler Richtung in im wesentlichen horizontale Richtung ist weiterhin vorgesehen, daß die Kühlvorrichtung im Bereich der Umlenkung, das heißt auf etwa 1/3 bis 2/3 der Längserstreckung der Stütz- und Führungseinrichtung aus Flachstrahldüsen besteht. Insbesondere soll die Kühleinrichtung auch an der Unterseite der Bramme aus Flachstrahldüsen bestehen.In this continuous caster with an arcuate support and guide device for deflecting the strand from a substantially vertical direction in essentially horizontal direction is further provided that the cooling device in the area of the deflection, that is to say about 1/3 to 2/3 of the longitudinal extent the support and guide device consists of flat jet nozzles. In particular the cooling device should also be on the underside of the slab made of flat jet nozzles consist.
Die DE-AS 1 558 194 beschreibt ein Verfahren und eine Vorrichtung zum Kühlen eines Gußstranges in einer Sekundärkühlzone. Der Gußstrang wird in Zonen gekühlt, die quer zur Strangachse zueinander versetzt sind, mit der Maßgabe, daß die Kühlwirkung in den Zonen benachbarter Ebenen sich zu einer über die Strangoberfläche quer zur Strangachse annähernd gleichmäßig verlaufenden Kühlwirkung ergänzen.DE-AS 1 558 194 describes a method and a device for cooling of a cast strand in a secondary cooling zone. The cast strand is cooled in zones, which are offset from one another transversely to the strand axis, with the proviso that the cooling effect in the zones of neighboring levels becomes one over the strand surface The cooling effect runs almost uniformly across the strand axis complete.
Die DE-AS 1 289 956 offenbart eine Sekundärkühlvorrichtung für gradflächige Stranggußerzeugnisse. Diese besteht aus mehreren quer zur Strangachse angeordneten Zerstäuberdüsen. Die Zerstäuberdüsen weisen eine flache Charakteristik der auftreffenden Kühlmittelmenge auf und sind mit einem solchen Abstand von jeder benachbarten Düse angeordnet, bei welchen die Düsenflanken sich so weit überschneiden, daß die Kühlung im Überschneidungsbereich nur geringfügig von der Kühlung der außerhalb der Überschneidungen liegenden Oberflächenteile abweicht. DE-AS 1 289 956 discloses a secondary cooling device for straight surfaces Continuous castings. This consists of several arranged transversely to the strand axis Atomizer nozzles. The atomizer nozzles have a flat characteristic of the incident coolant quantity and are at such a distance of each adjacent nozzle, where the nozzle flanks are so far overlap that the cooling in the overlap area is only slightly the cooling of the surface parts lying outside the overlap deviates.
Bei keiner der bekannten Vorrichtungen sind wirksame Mittel vorhanden, welche einen Austritt von Laufwasser seitlich neben dem Strang und eine damit einhergehende unerwünscht intensive Abkühlung der Bandkantenbereiche verhindert.No effective means are available in any of the known devices, which an outlet of running water to the side of the strand and an accompanying one prevents undesirable intensive cooling of the band edge areas.
Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine zu deren Durchführung geeignete Vorrichtung anzugeben, durch welche der Austritt von Laufwasser aus der Sekundärkühlkammer einer Stranggießanlage seitlich neben dem Strang und eine damit einhergehende unerwünscht intensive Unterkühlung der Strangkanten verhindert werden kann.Starting from the aforementioned prior art, the object of the invention is based on a method and a device suitable for carrying it out specify the way in which running water escapes from the secondary cooling chamber a continuous caster next to the strand and an accompanying one undesirable intensive hypothermia of the strand edges can be prevented can.
Zur Lösung der Aufgabe wird bei einem im Oberbegriff von Anspruch 1 genannten Verfahren mit der Erfindung vorgeschlagen, daß energiereiche Sprühstrahlen eines Ablenkmediums erzeugt und bevorzugt quer zu den Bandkantenbereichen gegen den Laufwasseraustritt gerichtet werden, derart, daß das Laufwasser von den Bandkantenbereichen abgelenkt und in beiderseitig vom Gußstrang vorhandene Ablauföffnungen der Sekundärkühlkammer abgeleitet wird.To solve the problem is mentioned in the preamble of claim 1 Method with the invention proposed that high-energy spray jets Deflection medium generated and preferably across the band edge areas be directed against the running water outlet in such a way that the running water of deflected the band edge areas and in existing on both sides of the cast strand Drain openings of the secondary cooling chamber is derived.
Mit der erfindungsgemäßen Lösung der Aufgabe wird mit großem Vorteil erreicht, daß eine unerwünscht intensive Abkühlung der Bandkantenbereiche durch Laufwasser unterdrückt wird.With the solution of the object according to the invention, it is achieved with great advantage that that an undesirably intensive cooling of the band edge areas by running water is suppressed.
Durch Anpassung der Verfahrensparameter, beispielsweise Einstellen von Richtung, Energiegehalt sowie Anzahl und Durchsatzmenge der einzelnen Düsen wird die Wirksamkeit des erfindungsgemäßen Verfahrens in erforderlichem Maße optimiert und es werden die jeweiligen Verhältnisse der Strangproduktion einer Dünnbrammen-Gießanlage optimal berücksichtigt.By adapting the process parameters, for example setting the direction, Energy content as well as number and throughput of the individual nozzles the effectiveness of the method according to the invention is optimized to the extent necessary and the respective ratios of the strand production of a thin slab caster optimally considered.
Eine Ausgestaltung des Verfahrens nach der Erfindung sieht vor, daß als Ablenkmedium Wasser oder Luft oder ein Wasser-/Luftgemisch verwendet wird. Damit wird eine noch bessere Anpassung der Verfahrensparameter an die jeweiligen Produktionsbedingungen einer Stranggießanlage erreicht.An embodiment of the method according to the invention provides that as a deflection medium Water or air or a water / air mixture is used. In order to is an even better adaptation of the process parameters to the respective Production conditions of a continuous caster reached.
Weiterhin sieht das Verfahren nach der Erfindung vor, daß Sprühstrahlen mit flachen Sprühkegeln erzeugt werden. Ein Sprühstrahl dieser Form entzieht dem Strang ein Minimum an Wärme, obwohl es sich nicht vermeiden läßt, daß auch der Strang durch das Ablenkmedium teilweise besprüht wird.Furthermore, the method according to the invention provides that spray jets with flat Spray cones are generated. A spray jet of this form withdraws this Strand a minimum of heat, although it can't be avoided that too the strand is partially sprayed by the deflecting medium.
Eine weitere Ausgestaltung des Verfahrens nach der Erfindung sieht vor, daß quer zu jeder Seite einer Kante des Gußstranges sich teilweise überschneidende Reihen von Sprühkegeln erzeugt werden. Damit wird eine vollständige Abdeckung jeder Seite einer Kante des Gußstranges mit Sprühstrahlen des Ablenkmediums erreicht.Another embodiment of the method according to the invention provides that across rows partially overlapping on each side of an edge of the cast strand are generated by spray cones. This will provide complete coverage each side of an edge of the cast strand with sprays of the deflecting medium reached.
Mit einer weiteren Ausgestaltung des Verfahrens nach der Erfindung ist vorgesehen, daß Sprühstrahlen bevorzugt in einem Winkel α gegen die Laufrichtung des Laufwassers gesprüht werden. Dadurch, daß die Düsen nach oben, entgegen der Richtung des Laufwassers sprühen, wird die Ablenkung des Laufwassers optimiert.Another embodiment of the method according to the invention provides that spray jets preferably at an angle α against the direction of the Run water are sprayed. The fact that the nozzles up, against the Spray towards the running water, the deflection of the running water is optimized.
Eine vorteilhafte Ausgestaltung des Verfahrens sieht weiterhin vor, daß die Kantenbereiche des Gußstranges in vergleichsweise geringem Abstand stromaufwärts der Bodenöffnung der Sekundärkühlkammer besprüht werden. Damit werden besonders günstige Verfahrensparameter für die Ablenkung des Laufwasser aus den Bandkantenbereichen erzielt.An advantageous embodiment of the method further provides that the edge areas of the cast strand at a comparatively short distance upstream sprayed into the bottom opening of the secondary cooling chamber. This makes it special favorable process parameters for the deflection of the running water from the Band edge areas achieved.
Und weiter sieht das Verfahren nach der Erfindung vor, daß bei einer die Breite des Stranges überbrückenden Anordnung jeweils mehrerer Düsen in Reihe, an den Schmalseiten eines Stranges nach Maßgabe wechselnder Strangbreite einzelne Düsenpaare der Düsenreihen zu- oder abgeschaltet werden. Damit ergeben sich in unkomplizierter und vorteilhafter Weise veränderbare Zonen zu besprühender Bandkantenbereiche quer zur Strangachse, und zwar nach Maßgabe der jeweiligen Breite des Stranges.And further the method according to the invention provides that the width of the line bridging arrangement of several nozzles in a row the narrow sides of a strand in accordance with changing strand width Nozzle pairs of the nozzle rows can be switched on or off. With it result spraying changeable zones in an uncomplicated and advantageous manner Band edge areas transverse to the strand axis, in accordance with the respective width of the strand.
Und schließlich sieht die Erfindung vor, daß Sprühstrahlen annähernd senkrecht zur Oberfläche gegen Bandkantenbereiche gesprüht werden. Damit wird ein optimaler Sperreffekt gegen austretendes Laufwasser erzeugt, ohne daß die Breitseiten des Stranges in unerwünschter Weise von den Sprühstrahlen getroffen werden und die Strangkanten einer unerwünschten Kühlwirkung ausgesetzt werden.And finally, the invention provides that spray jets are approximately perpendicular be sprayed to the surface against band edge areas. This will be an optimal one Barrier effect against escaping running water generated without the broadsides of the strand hit in an undesirable manner by the spray jets and the strand edges are exposed to an undesirable cooling effect.
Eine Vorrichtung zum Verhindern einer unerwünscht intensiven Abkühlung der Bandkantenbereiche eines Gußstrahles durch mit diesem aus der Bodenöffnung einer Sekundärkammer austretendes Laufwasser, umfaßt in Reihe angeordnete Sprühdüsen zum Erzeugen energiereicher, gegen den Laufwasseraustritt gerichteter Sprühstrahlen, wobei die Sprühdüsen in vergleichsweise geringem Abstand stromaufwärts der dem Gußstrang an der Sekundärkühlkammer zugeordneten Bodenöffnung angeordnet sind, und wobei ferner die Sprühdüsen zu mehreren in jeweils einer Reihe in Richtung der Strangbreite zusammengefaßt und je einzeln über Drosselvorrichtungen an eine Speiseleitung angeschlossen sind.A device for preventing an undesirably intensive cooling of the Band edge areas of a casting jet through with this from the bottom opening Running water exiting from a secondary chamber comprises arranged in series Spray nozzles for generating high-energy, directed against the running water outlet Spray jets, the spray nozzles at a comparatively short distance upstream of that assigned to the cast strand on the secondary cooling chamber Bottom opening are arranged, and furthermore the spray nozzles to several in one row each in the direction of the strand width and each individually are connected to a feed line via throttle devices.
Vorteilhafte Ausgestaltungen der Vorrichtung sind entsprechend den Unteransprüchen vorgesehen.Advantageous embodiments of the device are in accordance with the subclaims intended.
Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung einiger in Zeichnungen schematisch dargestellter Ausführungsbeispiele. Es zeigen:
- Figur 1
- eine Seitenansicht einer Stranggießanlage umfassend eine Sprühvorrichtung nach der Erfindung in schematischer Darstellung;
- Figur 2
- im Schnitt einer Schnittebene II. - II. in Fig. 1 die Draufsicht auf einen Kühlkammerboden;
- Figur 3
- eine Seitenansicht eines aus der Kühlkammer austretenden Stranges mit einer erfidungsgemäßen Sprühvorrichtung;
- Figur 4
- im Schnitt der Ebene II. - II. in Fig. 1 eine Draufsicht auf den Kühlkammerboden mit einer Anordnung von mehreren Sprühdüsen und deren Verrohrung;
Figur 5.- im Schnitt der Ebene II. - II. in Figr.1 eine weitere Draufsicht auf einen Kühlkammerboden mit in Reihen angeordneten Sprühdüsen.
- Figure 1
- a side view of a continuous caster comprising a spray device according to the invention in a schematic representation;
- Figure 2
- in the section of a sectional plane II. - II. in Figure 1, the plan view of a cooling chamber floor.
- Figure 3
- a side view of a strand emerging from the cooling chamber with a spray device according to the invention;
- Figure 4
- in section of the plane II. - II. in Figure 1 is a plan view of the cooling chamber floor with an arrangement of several spray nozzles and their piping.
- Figure 5.
- in the section of the plane II. - II. in Figr.1 a further plan view of a cooling chamber floor with spray nozzles arranged in rows.
Der in Fig. 1 gezeigte Anlagenbereich einer Stranggießanlage mit Mitteln zur
Durchführung des erfindungsgemäßen Verfahrens ist in Seitenansicht so dargestellt,
daß der Betrachter auf die Schmalseite des Gußstranges 6 sieht.The plant area shown in Fig. 1 of a continuous casting plant with means for
Implementation of the method according to the invention is shown in a side view,
that the viewer looks at the narrow side of the
Die rein schematische Darstellung dieses Anlagenbereiches zeigt oben die Kokille
22, aus welcher ein Gußstrang 6 entsprechend dem Pfeil 21 nach unten ausgezogen
wird. Dabei durchläuft er eine lediglich als Black-Box angedeutete Strangführung
23 innerhalb einer ebenfalls als Black-Box dargestellten Sekundärkühlkammer
8. Die rein schematische Darstellung von Strangführung 23 und Kühlkammer
8 ohne Angabe von konstruktiven Details wurde aus Gründen der Übersichtlichkeit
gewählt, weil davon auszugehen ist, daß ein Fachmann mit der Ausgestaltung
konstruktiver Details dieser Elemente vertraut ist. Im unteren Bereich der Sekundärkühlkammer
8 befindet sich deren Boden 20 mit der Bodenöffnung 7, durch
welche der Strang 6 zusammen mit einem Strom von Laufwasser 9 nach unten zu
austritt. Im Bereich dieses Austritts befindet sich eine Zufuhrleitung 24 für ein aus
der Sprühdüse 17 in Form von Sprühstrahlen 10 emitiertes Ablenkmedium. Bei
diesem kann es sich um Wasser oder Luft oder ein Wasser-/Luftgemisch handeln.The purely schematic representation of this plant area shows the mold above
22, from which a
Wie hierzu aus der Figur 2 hervorgeht, gliedert sich - in der Draufsicht auf den
Kühlkammerboden 20 betrachtet - die neben der Bodenöffnung 7 der Kühlkammer
8 zur sehende Anordnung von Sprühdüsen 17 in eine obere Düsenreihe 25
und eine untere Düsenreihe 26. Die von diesen erzeugten Sprühstrahlen 10 aus
einzelnen sich teilweise überlappenden Sprühkegeln 13 sind schräg zur Laufrichtung
21 des Gußstranges 6 im Bereich dicht oberhalb des Kühlkammerbodens 20
ausgerichtet.As can be seen from this in FIG. 2, the following is structured - in the top view of the
In Folge der Ausrichtung in Reihen 15 findet eine wenigstens teilweise Überlappung
der Sprühstrahlen 10 der oberen und unteren Düsenreihen 25, 26 statt.As a result of the alignment in
Wie weiterhin die Figur 3 in einer Seitenansicht mit Blick auf die Schmalseite 16
eines Gußstranges 6 zeigt, sind die Sprühstrahlen 10 der oberen bzw. unteren
Düsenreihe 25, 26 in einem Winkel α gegen die Richtung des Laufwassers 9 gerichtet.
Dadurch wird die Ablenkung des Laufwassers 9 optimiert.Like FIG. 3 in a side view with a view of the
Die Darstellung zeigt weiter den zum Gußstrang 6 und zur Bodenöffnung 7 hin
schräg nach oben ansteigenden Kühlkammerboden 20, welcher neben dem
Strang 6 die Bodenöffnung 7 offen hält, wobei insbesondere in deren Bereich ein
Durchströmen von Laufwasser 9 mit Hilfe der Erfindung vermieden werden soll.
Dies wird erreicht durch die Wirkung der energiereichen Sprühstrahlen 10, und
durch deren Auftreffen auf den Laufwasserstrom 9, wobei das Laufwasser in die
beiderseitig vom Gußstrang 6 vorhandenen Ablauföffnungen 12 der Sekundärkühlkammer
8 abgeleitet wird.The illustration further shows that towards the
Figur 4 zeigt eine weitere Schnittdarstellung der Kühlkammer 8 in den Schnittebenen
II. - II. von Fig. 1 und zwar eine Anordnung von Sprühdüsen 17 in Reihen 15
zur Ausbildung energiereicher Sprühstrahlen 10 an den Bandkantenbereichen 11
des Gußstranges 6.Figure 4 shows a further sectional view of the
Die Verrohrung der Sprühdüsen 17 ist durch Zufuhrleitungen 24 ausgebildet, welche
seitwärts der Düsenreihen 15 je einzeln an Drosselvorrichtungen 1 bis 5 angeschlossen
sind und diese wiederum von einer gemeinsamen Speiseleitung 18
ausgehen.The piping of the
Dieser Darstellung ist im Einzelnen zu entnehmen, daß bei einer die Breite des
Stranges 6 überbrückenden Anordnung, mit mehreren Düsenreihen 15 an
Schmalseitenbereichen 16 des Stranges 6, einzelne Düsenpaare 1, 1'; 2, 2'; 3, 3';
etc. der Düsenreihen 15 nach Maßgabe wechselnder Strangbreiten 19 zu- oder
abgeschaltet werden.This representation shows in detail that the width of the
Zur Kenntlichmachung unterschiedlicher Strangbreiten sind rein schematisch in
Figur 4 die kleinste Strangbreite mit b und die größte Strangbreite mit B angegeben.
Dazwischen können die Bandkantenbereiche 11 stufenweise den jeweiligen
Gegebenheiten angepaßt sein.To identify different strand widths are purely schematic in
4 shows the smallest strand width with b and the largest strand width with B.
In between, the
Auch bei dieser Darstellung sind die Düsenreihen mit den Bezugsziffern 15,
Sprühstrahlen mit 10 und Bandkantenbereiche mit 16 bezeichnet. Auftretendes
Laufwasser an den Schmalseiten des Stranges 6 ist mit Bezugsziffer 9 bezeichnet.
Die Verrohrung der Zufuhrleitungen ist mit der Bezugsziffer 24 bezeichnet.
Weiterhin ist erkennbar, daß einzelne Leitungen 24 mit ausgezogenen Strichen
und andere mit Strichpunkt-Linien gekennzeichnet sind. Damit soll gezeigt werden,
daß je nach kleinster Breite b oder größter Breite B des Gußstranges 6
Rohrleitungen 24 bzw. Sprühdüsen 17 zu- und abgeschaltet werden können.In this illustration too, the rows of nozzles with the
Schließlich zeigt die Darstellung auch noch die Bodenöffnung 7 im Kühlkammerboden
20. Mit 19 sind die variablen Breitenabschnitte des Gußstranges 6 bezeichnet,
die eine stufenweise Änderung der Strangbreite andeuten.Finally, the illustration also shows the
Und schließlich zeigt Figur 5 in vergrößerter Darstellung und ebenfalls in Draufsicht
auf einen Schnitt entlang der Ebene II. - II. in Fig. 1 weitere Funktionselemente,
und zwar den Strang 6, die Bodenkammer 7, den Kühlkammerboden 20,
den zu verhindernden Laufwasseraustritt 9 im Bereich der Bandkanten 11, sowie
die Anordnung von Düsenreihen 15 mit Sprühdüsen 17. Die Zufuhrleitungen zu
den Düsen 17 sind insgesamt mit der Bezugsziffer 24 gekennzeichnet. Finally, FIG. 5 shows an enlarged view and also a top view
on a section along the plane II. - II. in Fig. 1 further functional elements,
namely the
- 1.1.
- DrosselvorrichtungThrottling device
- 2.2nd
- DrosselvorrichtungThrottling device
- 3.3rd
- DrosselvorrichtungThrottling device
- 4.4th
- DrosselvorrichtungThrottling device
- 5.5.
- DrosselvorrichtungThrottling device
- 6.6.
- GußstrangCast strand
- 7.7.
- BodenöffnungBottom opening
- 8.8th.
- SekundärkühlkammerSecondary cooling chamber
- 9.9.
- LaufwasserRunning water
- 10.10th
- SprühstrahlenSpray jets
- 11.11.
- BandkantenbereichBand edge area
- 12.12th
- AblauföffnungDrain opening
- 13.13.
- SprühkegelSpray cone
- 14.14.
- KanteEdge
- 15.15.
- Reiheline
- 16.16.
- SchmalseiteNarrow side
- 17.17th
- SprühdüsenSpray nozzles
- 18.18th
- SpeiseleitungFeed line
- 19.19th
- Breitenabschnitte, variabelWidth sections, variable
- 20.20th
- KühlkammerbodenCooling chamber floor
- 21.21.
- StrangabzugsrichtungStrand withdrawal direction
- 22.22.
- KokilleMold
- 23.23.
- StrangführungStrand guide
- 24.24th
- ZufuhrleitungSupply line
- 25.25th
- obere Düsenreiheupper row of nozzles
- 26.26.
- untere Düsenreihelower row of nozzles
Claims (12)
dadurch gekennzeichnet,
daß energiereiche Sprühstrahlen (10) eines Ablenkmediums erzeugt und bevorzugt quer zu den Bandkantenbereichen (11) gegen den Laufwasseraustritt gerichtet werden, derart, daß das Laufwasser (9) von den Bandkantenbereichen (11) abgelenkt und in beiderseitig vom Gußstrang (6) vorhandene Ablauföffnungen (12) der Sekundärkühlkammer (8) abgeleitet wird.Method for preventing undesired cooling, in particular of the strip edge regions (11) of a cast strand (6) by running water (9) emerging therefrom from the bottom opening (7) of a secondary cooling chamber (8),
characterized,
that high-energy spray jets (10) of a deflecting medium are generated and preferably directed transversely to the band edge regions (11) against the running water outlet, in such a way that the running water (9) is deflected from the band edge regions (11) and into drain openings (2) on both sides of the cast strand (6) 12) the secondary cooling chamber (8) is derived.
dadurch gekennzeichnet,
daß als Ablenkmedium Wasser oder Luft oder ein Wasser-/Luftgemisch verwendet wird.Method according to claim 1,
characterized,
that water or air or a water / air mixture is used as a deflecting medium.
dadurch gekennzeichnet,
daß Sprühstrahlen (10) mit flachen Sprühkegeln (13) erzeugt werden. The method of claim 1 or 2,
characterized,
that spray jets (10) are generated with flat spray cones (13).
dadurch gekennzeichnet,
daß quer zu jeder Seite einer Kante (14) des Gußstranges (6) sich teilweise überschneidende Reihen (15) von Sprühkegeln (13) erzeugt werden.Method according to one or more of claims 1 to 3,
characterized,
that across each side of an edge (14) of the cast strand (6) partially overlapping rows (15) of spray cones (13) are generated.
dadurch gekennzeichnet,
daß Sprühstrahlen (10) bevorzugt in einem Winkel (α) gegen die Laufrichtung des Laufwassers (9) gesprüht werden.Method according to one or more of claims 1 to 4,
characterized,
that spray jets (10) are preferably sprayed at an angle (α) against the running direction of the running water (9).
dadurch gekennzeichnet,
daß die Kantenbereiche (11) des Gußstranges (6) in vergleichsweise geringem Abstand stromaufwärts der Bodenöffnung (7) der Sekundärkühlkammer (8) besprüht werden.Method according to one or more of claims 1 to 5,
characterized,
that the edge areas (11) of the cast strand (6) are sprayed at a comparatively small distance upstream of the bottom opening (7) of the secondary cooling chamber (8).
dadurch gekennzeichnet,
daß bei einer die Breite aus Stranges (6) überbrückenden Anordnung jeweils mehrerer Düsen in Reihe (15), an den Schmalseiten (16) eines Stranges (6) nach Maßgabe wechselnder Strangbreite (b bzw. B) einzelne Düsenpaare (1, 1'; 2, 2'; 3, 3'; ect.) der Düsenreihen (15) zu- oder abgeschaltet werden.Method according to one or more of claims 1 to 6,
characterized,
that in an arrangement bridging the width of strands (6), a plurality of nozzles in a row (15), on the narrow sides (16) of a strand (6) in accordance with changing strand width (b or B), individual pairs of nozzles (1, 1 '; 2, 2 '; 3, 3'; ect.) Of the rows of nozzles (15) can be switched on or off.
dadurch gekennzeichnet,
daß Sprühstrahlen (10) annähernd senkrecht zur Strangoberfläche gegen Bandkantenbereiche (11) gesprüht werden. Method according to one or more of claims 1 to 7,
characterized,
that spray jets (10) are sprayed approximately perpendicular to the strand surface against band edge areas (11).
dadurch gekennzeichnet,
daß in Reihe angeordnete Sprühdüsen (17) zum Erzeugen energiereicher, gegen den Laufwasseraustritt gerichteter Sprühstrahlen (10) vorgesehen sind,
characterized,
that spray nozzles (17) arranged in a row are provided for generating high-energy spray jets (10) directed against the running water outlet,
dadurch gekennzeichnet,
daß die Sprühdüsen (17) mit senkrecht zu den Flächen des Gußstranges (6) ausgerichteten Achsen angeordnet sind.Device according to claim 9,
characterized,
that the spray nozzles (17) are arranged with axes oriented perpendicular to the surfaces of the cast strand (6).
dadurch gekennzeichnet,
daß die Sprühdüsen (17) zur Erzeugung senkrecht zum Gußstrang (6) gerichteter Sprühstrahlen (10) mit entsprechend richtungseinstellbaren Achsen (x-x) angeordnet sind.Device according to claim 9 or 10,
characterized,
that the spray nozzles (17) for generating spray jets (10) directed perpendicular to the cast strand (6) are arranged with correspondingly adjustable axes (xx).
dadurch gekennzeichnet,
daß die Sprühdüsen (17) zur Erzeugung eines flachen und breiten Sprühkegels (13) mit schmalen Austrittsschlitzen ausgebildet sind.Device according to one or more of claims 9 to 11,
characterized,
that the spray nozzles (17) are designed to produce a flat and wide spray cone (13) with narrow outlet slots.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10001073A DE10001073A1 (en) | 2000-01-13 | 2000-01-13 | Prevention of intensive cooling of band edge regions of cast rod involves producing energy-rich spray beam of deviating medium and directing across band edge regions against running water |
| DE10001073 | 2000-01-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1116534A1 true EP1116534A1 (en) | 2001-07-18 |
| EP1116534B1 EP1116534B1 (en) | 2005-04-27 |
Family
ID=7627337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01100532A Expired - Lifetime EP1116534B1 (en) | 2000-01-13 | 2001-01-10 | Process an device for avoiding unwanted cooling of the edges of a cast sheet |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6508298B2 (en) |
| EP (1) | EP1116534B1 (en) |
| JP (1) | JP2001198656A (en) |
| KR (1) | KR100725034B1 (en) |
| CN (1) | CN1210122C (en) |
| AT (1) | ATE294040T1 (en) |
| BR (1) | BR0102254B1 (en) |
| CA (2) | CA2331078C (en) |
| DE (2) | DE10001073A1 (en) |
| ES (1) | ES2240243T3 (en) |
| MX (1) | MXPA01000331A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2293892A1 (en) * | 2008-06-06 | 2011-03-16 | Novelis, Inc. | Method and apparatus for removal of cooling water from ingots by means of water jets |
| DE102017213842A1 (en) * | 2017-08-08 | 2019-02-14 | Sms Group Gmbh | Method and plant for continuous casting of a metallic product |
| CN107598112A (en) * | 2017-10-30 | 2018-01-19 | 中冶赛迪工程技术股份有限公司 | A kind of secondary cooling water of continuous casting spraying width control device and method |
| DE102018205685A1 (en) * | 2018-04-13 | 2019-10-17 | Sms Group Gmbh | Cooling device and method for its operation |
| CN110918917A (en) * | 2019-11-18 | 2020-03-27 | 张家港宏昌钢板有限公司 | Continuous casting secondary cooling water system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289956B (en) * | 1961-09-13 | 1969-02-27 | Concast Ag | Secondary cooling device for straight continuous cast products |
| DE1558194B1 (en) * | 1966-05-31 | 1970-10-15 | Concast Ag | Method and device for cooling a cast strand in a secondary cooling zone |
| DE2208928A1 (en) * | 1971-04-30 | 1973-07-26 | Voest Ag | CONTINUOUS CASTING PLANT FOR SLABS |
| JPH079100A (en) * | 1993-06-28 | 1995-01-13 | Kawasaki Steel Corp | Secondary cooling method in continuous casting |
| DE4425379A1 (en) * | 1994-07-19 | 1996-01-25 | Schloemann Siemag Ag | Appts. for reducing the spray cone produced by a spray nozzle |
| JP2000005849A (en) * | 1998-06-22 | 2000-01-11 | Showa Electric Wire & Cable Co Ltd | Continuous casting device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH552424A (en) * | 1972-09-06 | 1974-08-15 | Concast Ag | METHOD FOR CONTROLLING THE COOLING OF A STRAND EMITTING FROM A FLOW-THROUGH COOLING AND DEVICE FOR CARRYING OUT THIS METHOD. |
| AT323921B (en) * | 1973-07-27 | 1975-08-11 | Voest Ag | COOLING DEVICE FOR STRANDS TO BE CASTED CONTINUOUSLY |
| SE409961B (en) * | 1974-03-18 | 1979-09-17 | Voest Ag | STRING MOLDING PLANT FOR THE ROUGH PLATE |
| JPH05200514A (en) * | 1991-11-29 | 1993-08-10 | Sumitomo Metal Ind Ltd | Continuous casting method |
| JPH05220550A (en) * | 1992-02-14 | 1993-08-31 | Tokai Gokin Kogyo Kk | Secondary cooling device for continuous casting |
| JPH0760420A (en) * | 1993-08-25 | 1995-03-07 | Nippon Steel Corp | Cooling device |
| JPH1034303A (en) * | 1996-07-26 | 1998-02-10 | Kawasaki Steel Corp | Continuous casting method |
| JP3526705B2 (en) * | 1996-09-07 | 2004-05-17 | 新日本製鐵株式会社 | Continuous casting method for high carbon steel |
| JP3588411B2 (en) * | 1997-09-22 | 2004-11-10 | 新日本製鐵株式会社 | Stainless steel continuous casting method |
-
2000
- 2000-01-13 DE DE10001073A patent/DE10001073A1/en not_active Withdrawn
-
2001
- 2001-01-05 US US09/755,870 patent/US6508298B2/en not_active Expired - Lifetime
- 2001-01-08 BR BRPI0102254-7A patent/BR0102254B1/en not_active IP Right Cessation
- 2001-01-10 EP EP01100532A patent/EP1116534B1/en not_active Expired - Lifetime
- 2001-01-10 DE DE50105988T patent/DE50105988D1/en not_active Expired - Lifetime
- 2001-01-10 CA CA2331078A patent/CA2331078C/en not_active Expired - Lifetime
- 2001-01-10 MX MXPA01000331A patent/MXPA01000331A/en active IP Right Grant
- 2001-01-10 ES ES01100532T patent/ES2240243T3/en not_active Expired - Lifetime
- 2001-01-10 AT AT01100532T patent/ATE294040T1/en active
- 2001-01-10 CA CA2670075A patent/CA2670075C/en not_active Expired - Fee Related
- 2001-01-11 JP JP2001003790A patent/JP2001198656A/en active Pending
- 2001-01-12 KR KR1020010001699A patent/KR100725034B1/en not_active IP Right Cessation
- 2001-01-12 CN CNB01103016XA patent/CN1210122C/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289956B (en) * | 1961-09-13 | 1969-02-27 | Concast Ag | Secondary cooling device for straight continuous cast products |
| DE1558194B1 (en) * | 1966-05-31 | 1970-10-15 | Concast Ag | Method and device for cooling a cast strand in a secondary cooling zone |
| DE2208928A1 (en) * | 1971-04-30 | 1973-07-26 | Voest Ag | CONTINUOUS CASTING PLANT FOR SLABS |
| JPH079100A (en) * | 1993-06-28 | 1995-01-13 | Kawasaki Steel Corp | Secondary cooling method in continuous casting |
| DE4425379A1 (en) * | 1994-07-19 | 1996-01-25 | Schloemann Siemag Ag | Appts. for reducing the spray cone produced by a spray nozzle |
| JP2000005849A (en) * | 1998-06-22 | 2000-01-11 | Showa Electric Wire & Cable Co Ltd | Continuous casting device |
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| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04 31 May 1995 (1995-05-31) * |
| PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31) * |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0102254A (en) | 2001-09-18 |
| ES2240243T3 (en) | 2005-10-16 |
| CA2331078C (en) | 2010-05-25 |
| DE50105988D1 (en) | 2005-06-02 |
| DE10001073A1 (en) | 2001-07-19 |
| MXPA01000331A (en) | 2002-11-04 |
| JP2001198656A (en) | 2001-07-24 |
| US20010020527A1 (en) | 2001-09-13 |
| EP1116534B1 (en) | 2005-04-27 |
| US6508298B2 (en) | 2003-01-21 |
| CN1324702A (en) | 2001-12-05 |
| CA2670075A1 (en) | 2001-07-13 |
| CN1210122C (en) | 2005-07-13 |
| CA2331078A1 (en) | 2001-07-13 |
| KR100725034B1 (en) | 2007-06-07 |
| ATE294040T1 (en) | 2005-05-15 |
| KR20010086314A (en) | 2001-09-10 |
| CA2670075C (en) | 2010-12-07 |
| BR0102254B1 (en) | 2009-01-13 |
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