EP0842001A1 - Plate mould for producing steel billets - Google Patents

Plate mould for producing steel billets

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Publication number
EP0842001A1
EP0842001A1 EP96930954A EP96930954A EP0842001A1 EP 0842001 A1 EP0842001 A1 EP 0842001A1 EP 96930954 A EP96930954 A EP 96930954A EP 96930954 A EP96930954 A EP 96930954A EP 0842001 A1 EP0842001 A1 EP 0842001A1
Authority
EP
European Patent Office
Prior art keywords
side walls
mold
plate mold
mold according
temperature sensors
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.)
Granted
Application number
EP96930954A
Other languages
German (de)
French (fr)
Other versions
EP0842001B1 (en
Inventor
Fritz-Peter Prof.Dr.-Ing. Pleschiutschnigg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0842001A1 publication Critical patent/EP0842001A1/en
Application granted granted Critical
Publication of EP0842001B1 publication Critical patent/EP0842001B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0408—Moulds for casting thin slabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould

Definitions

  • the invention relates to a plate mold for producing strands of steel, in particular thin slabs, with water-cooled narrow side walls that can be clamped between wide side walls and with devices for adjusting the cavity formed by the narrow and wide side walls into different strand dimensions and the casting cone and with an oscillation device.
  • Mold walls have cooling chambers that include certain cooling areas.
  • Measuring elements for determining the amount of heat dissipated or the cooling capacities are connected to the water supply and drain lines on the broad sides. Furthermore, an average value of the cooling capacity of the cooling chambers is simultaneously formed in the measuring elements, which is fed to an average former with which the conicity of the narrow sides can be controlled.
  • the broad side walls are divided into at least three mutually independent cooling segments in the casting direction. These cooling segments are arranged in such a way that the respective outer ones have the same structure and enclose between them a middle segment which can be divided into several zones.
  • actuators are used to control:
  • Outlet water temperature and the amount of water measured, the amounts of water can also be controlled independently.
  • the arrangement according to the invention in at least three zones and the comparison of the specific heat flows in these zones with respect to one another makes it possible to recognize an asymmetry, particularly in relation to that in the immersion pouring area. A non-uniform heat transfer due to turbulence of the steel in the mold can also be seen.
  • a possible deviation in the center of the mold goes hand in hand with longitudinal cracks in the surface of the strand to breakthroughs (adhesive). These longitudinal cracks occur particularly in the middle slab area next to the center axis in the area of the immersion spout, that is to say in the area of the relatively thinner slag lubrication film.
  • This thinner slag lubrication film leads to an increased heat flow and thus to a non-uniform partial strand shell formation with regard to the increased Thickness, the reduced temperature and the increased shrinkage.
  • This non-uniform partial strand shell formation leads to longitudinal cracks and, in extreme cases, to the sticking of the strand in the middle of the broadside of the mold and to breakthrough.
  • the device reveals a migration of the strand in the direction of one of the narrow sides with a corresponding risk of breakthrough due to hangers, which can then be counteracted by conicity control.
  • the invention therefore not only allows the casting parameters to be changed during the casting, in particular for securing breakthroughs, but also the development of the mold shape in conjunction with the immersion pouring mold, both inside and outside, and of the casting powder to form an optimal “mold” system.
  • FIG. 1 shows schematically the structure of a plate mold in cross section and FIG. 2 in longitudinal section.
  • a top view of the mold is shown in the upper part of the picture.
  • a straight-walled mold is shown for the continuous casting of slabs.
  • the broad sides have a first side segment 11 and a center segment 13, each of which has chambers, or a first segment 21 and a center segment 23, which have vertically arranged bores for guiding the cooling water.
  • a narrow side 31 adjustable via an adjusting device 33 is clamped between the broad sides.
  • a so-called dent mold is shown in the right part of the picture. It has a width segment 12 and also a center segment 13, each of which has cooling chambers, or a side segment 22 and a center segment 23, which has cooling bores.
  • the center segments 13 and 23 are further divided into zones 14 and 15 or 24 and 25.
  • a narrow side 32 is clamped between the broad sides 12 and 22 and is adjustable for an adjusting device 33 by means of an actuator 63.
  • the broad sides 11 to 15 and 21 to 25 and the narrow sides 31 and 32 have feeders 51, 53, 55, 57 and discharges 52, 54, 56 and 58 through which a
  • Coolant can be supplied and removed.
  • An immersion pouring tube 41 or 42 is introduced into the mold interior of the mold.
  • thermal sensors 61 and 64 are arranged, which are connected to a controller 62, which acts on the actuator 63 or an oscillation device, not shown .
  • the side view of the mold is shown with the identical positions already mentioned.
  • the lower adjusting device 34 or 36 of the narrow sides 31 or 32 is shown.
  • the die mouth is designated 29 Position list
  • Coolant system 51 Inlet side segment 1 52 Drain side segment 1 53 Center segment feed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Confectionery (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Extraction Processes (AREA)
  • Ropes Or Cables (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

The plate mold has water-cooled narrow side walls that can be clamped between broad side walls. The broad side walls have at least three adjacent and mutually independent cooling segments. The cooling segments are divided symmetrically relative to the central axis of the mold and have, in the region of the mold mouth, separate connections for the independent supply of a liquid coolant. The apparatus includes temperature sensors, an oscillation device, an actuator for adjusting the space between the narrow and broad side walls and a control device connected to the temperature sensors to control the oscillation device and the actuator.

Description

Plattenkokille zur Erzeugung von Strängen aus StahlPlate mold for the production of steel strands
Beschreibungdescription
Die Erfindung betrifft eine Plattenkokille zur Erzeugung von Strängen aus Stahl, insbesondere Dünnbrammen, mit wassergekühlten Schmalseitenwänden, die zwischen Breitseitenwänden einklemmbar sind und mit Einrichtungen zum Verstellen des von den Schmal- und Breitseitenwänden geformten Hohlraums in verschiedene Strangabmessungen sowie des Gießkonus und mit einer Oszillationseinrichtung.The invention relates to a plate mold for producing strands of steel, in particular thin slabs, with water-cooled narrow side walls that can be clamped between wide side walls and with devices for adjusting the cavity formed by the narrow and wide side walls into different strand dimensions and the casting cone and with an oscillation device.
Aus DE 24 15 224 C3 ist eine Plattenkokille für Brammen bekannt, derenFrom DE 24 15 224 C3 a plate mold for slabs is known, the
Kokillenwände Kühlkammern besitzen, die bestimmte Kühlbereiche umfassen. An die Wasserzu- und -abflußleitungen der Breitseiten sind Meßglieder zur Bestimmung der abgeführten Wärmemenge bzw. der Kühlleistungen angeschlossen. Weiterhin wird in den Meßgliedern gleichzeitig ein Durchschnittswert der Kühlleistung der Kühlkammern gebildet, welcher einem Durchschnittsbildner zugeleitet wird, mit dem die Konizität der Schmalseiten gesteuert werden kann.Mold walls have cooling chambers that include certain cooling areas. Measuring elements for determining the amount of heat dissipated or the cooling capacities are connected to the water supply and drain lines on the broad sides. Furthermore, an average value of the cooling capacity of the cooling chambers is simultaneously formed in the measuring elements, which is fed to an average former with which the conicity of the narrow sides can be controlled.
Aus DE 41 17 073 C2 ist es bekannt, mit Hilfe einer kalorimetrischen Messung an eine Brammenkokille, insbesondere einer rechteckigen oder bombierten Dünnbrammenkokille, den integralen und spezifischen Wärmetransport an jeder einzelnen Kupferplatte zu bestimmen. Ein "one Iine"-Vergleich der spezifischen Wärmeströme von der dem Stahl zugewandten Kupferplattenseite, den sogenannten hot face, zur wassergekühlten Seite speziell der Schmalseiten, mit denen der zwei Breitseiten ermöglicht die Regelung der Schmalseitenkonizitäten unabhängig von den im einzelnen gewählten Gießparametern.From DE 41 17 073 C2 it is known to use a calorimetric measurement on a slab mold, in particular a rectangular or cambered thin slab mold, to determine the integral and specific heat transport on each individual copper plate. A "one-line" comparison of the specific heat flows from the copper plate side facing the steel, the so-called hot face, to the water-cooled side, especially the narrow sides, with which the two broad sides enable the narrow side conicity to be controlled independently of the individually selected casting parameters.
In nachteiliger Weise kann bei den o. g. Plattenkokillen keine differenzierte Aussage über den partiellen Wärmestrom über die Kokillenbreite gemacht werden. Darüber hinaus sind die eingesetzten Temperaturfühler für ein sicheres Gießen bei Gießgeschwindigkeiten oberhalb von 1 ,5 m/min nicht geeignet. Die Erfindung hat sich daher das Ziel gesetzt, eine gattungsgemäße Plattenkokille für Gießgeschwindigkeit zwischen 1 ,5 und 8 m/min zu schaffen, die eine einfache und sichere Temperaturführung einschließlich der Breitseitenmitte im Bereich des Tauchausgusses ermöglicht.In a disadvantageous manner, no differentiated statement about the partial heat flow over the mold width can be made with the above-mentioned plate molds. In addition, the temperature sensors used are not suitable for safe casting at casting speeds above 1.5 m / min. The invention therefore has set itself the goal of creating a generic plate mold for casting speeds between 1, 5 and 8 m / min, which enables simple and safe temperature control including the broad center in the area of the immersion nozzle.
Die Erfindung erreicht dieses Ziel durch die kennzeichnenden Merkmale des Anspruchs 1. Sich daran anschließende Ansprüche betreffen vorteilhafte Weiterbildungen der Erfindung.The invention achieves this goal through the characterizing features of claim 1. The claims which follow relate to advantageous developments of the invention.
Erfindungsgemäß sind die Breitseitenwände in Gießrichtung in mindestens drei voneinander unabhängige Kühlsegmente aufgeteilt. Diese Kühlsegmente sind in der Weise angeordnet, daß die jeweils äußeren den gleichen Aufbau aufweisen und zwischen sich ein mittleres Segment, das in mehrere Zonen aufgeteilt sein kann, einschließen.According to the invention, the broad side walls are divided into at least three mutually independent cooling segments in the casting direction. These cooling segments are arranged in such a way that the respective outer ones have the same structure and enclose between them a middle segment which can be divided into several zones.
Durch diese Anordnung kann eine differenzierte Aussage über den partiellen Wärmestrom über die Kokillenbreite gemacht werden. Hiermit werden die Wärmestromdifferenzen über die Brammenbreite berücksichtigt, so daß die zugrunde liegenden Messungen sich integral über die Kokillenbreite und die Kokillenhöhe partiell erfassen lassen. Um für das sichere Gießen von Brammen und speziell von Dünnbrammen besonders bei Gießgeschwindigkeiten zwischen 1 ,5 und 8 m/min ist die Kenntnis des spezifischen Wärmeübergangs der Breitseiten besonders in der Brammenmitte von Bedeutung. Hiermit wird die Möglichkeit eröffnet, im Bereich des Tauchausgusses im Vergleich zum Rest der Breitseiten und zu den Schmalseiten eine gleichförmige Kühlleistung über die gesamte Kokillenbreitseite und damit über die gesamte Brammenbreite zu erreichen und Störungen zu vermeiden, die durch folgende Einflüsse hervorgerufen werden:This arrangement makes it possible to make a differentiated statement about the partial heat flow across the mold width. The heat flow differences over the slab width are hereby taken into account, so that the underlying measurements can be partially recorded integrally over the mold width and the mold height. In order for the safe casting of slabs and especially thin slabs, especially at casting speeds between 1.5 and 8 m / min, knowledge of the specific heat transfer of the broad sides, particularly in the middle of the slab, is important. This opens up the possibility of achieving a uniform cooling capacity over the entire broad side of the mold and thus over the entire width of the slab in the area of the immersion spout compared to the rest of the broad sides and the narrow sides and to avoid malfunctions caused by the following influences:
strömungsschattenbedingt durch den Tauchausguß relativer Schlackenmangel und damit Schmierfilmdicke durch verringerte aktive Dicke über die Brammenbreite für die Erschmelzung von Gießpulver zu Gießschlacke hohe Membranwirkung der Strangschale in der Brammenmitte Strömungssymmetrie bezogen auf die Mittenachse des Stranges in Gießrichtung Turbulenzen des Gießspiegels über die Brammenbreite.Flow shadow-related due to the immersion pouring relative slag deficiency and thus lubricating film thickness due to reduced active thickness across the slab width for the melting of casting powder to pouring slag high membrane effect of the strand shell in the middle of the slab. Flow symmetry with respect to the central axis of the strand in the casting direction. Turbulence of the casting level across the slab width.
Zur Bestimmung einer differenzierten spezifischen Wärmestromdichte über die Breite der Kokille und im Bereich der Schmalseiten bzw. über die Bramme und damit der Möglichkeit, Einfluß auf ein sicheres Gießen zu nehmen, werden Aktuatoren eingesetzt zur Steuerung:To determine a differentiated specific heat flow density across the width of the mold and in the area of the narrow sides or across the slab and thus the possibility of influencing safe casting, actuators are used to control:
- der Konizität der Tauchausgußposition und somit der Eintauchtiefe während des Gießens die Beurteilung der eventuell bedingten Strömungsänderung im Tauchausguß z.B. durch Oxidablagerungen.- the conicity of the immersion pouring position and thus the immersion depth during pouring, the assessment of the possible change in flow in the immersion pouring e.g. due to oxide deposits.
Darüber hinaus besteht die Möglichkeit, sowohl den Tauchausguß wie auch die Kokillenform einzeln wie auch gemeinsam zu optimieren.In addition, there is the possibility to optimize both the immersion nozzle and the mold shape individually as well as together.
Durch das Messen der Wasserauslauftemperatur im Vergleich zur Einlauftemperatur innerhalb der einzelnen drei Zonen besteht die Möglichkeit der Optimierung der Kühlwasserregelung. In jeder Zone wird dabei die Einlauf- undBy measuring the water outlet temperature compared to the inlet temperature within the individual three zones, it is possible to optimize the cooling water control. In each zone, the inlet and
Auslaufwassertemperatur sowie die Wassermenge gemessen, wobei die Wassermengen auch unabhängig voneinander regelbar sein können.Outlet water temperature and the amount of water measured, the amounts of water can also be controlled independently.
Die erfindungsgemäße Anordnung in mindestens drei Zonen und der Vergleich der spezifischen Wärmeströme in diesen Zonen zueinander erlaubt es, eine Unsymmetrie besonders zu dem im Tauchausgußbereich zu erkennen. Ein ungleichförmiger Wärmedurchgang bedingt durch Turbulenzen des Stahles in der Kokille ist ebenfalls erkennbar.The arrangement according to the invention in at least three zones and the comparison of the specific heat flows in these zones with respect to one another makes it possible to recognize an asymmetry, particularly in relation to that in the immersion pouring area. A non-uniform heat transfer due to turbulence of the steel in the mold can also be seen.
Eine mögliche Abweichung in der Kokillenmitte geht einher mit Längsrissen in der Strangoberfläche bis hin zu Durchbrüchen (Klebern). Diese Längsrisse treten besonders im mittleren Brammenbereich neben der Mittenachse im Bereich des Tauchausgusses, also im Bereich des relativ dünneren Schlackenschmierfilms auf. Dieser dünnere Schlackenschmierfilm führt zu einem erhöhten Wärmestrom und damit zu einer ungleichförmigen partiellen Strangschalenausbildung hinsichtlich der erhöhten Dicke, der verringerten Temperatur und der erhöhten Schrumpfung. Diese ungleichförmige partielle Strangschalenausbildung führt zu Längsrissen und im Extremfall zum Kleben des Stranges in der Mitte der Kokillenbreitseite und zum Durchbruch. Parallel zu diesen Störungen an der Strangschale treten entsprechend thermische partielle Belastungen der Kupferplatte auf, die zur Verringerung der Standzeit führen. Weiterhin läßt die Vorrichtung ein Wandern des Stranges in Richtung eine der Schmalseiten erkennen mit entsprechender Durchbruchgefahr infolge von Hängern, der dann durch Konizitätsregelung entgegengewirkt werden kann.A possible deviation in the center of the mold goes hand in hand with longitudinal cracks in the surface of the strand to breakthroughs (adhesive). These longitudinal cracks occur particularly in the middle slab area next to the center axis in the area of the immersion spout, that is to say in the area of the relatively thinner slag lubrication film. This thinner slag lubrication film leads to an increased heat flow and thus to a non-uniform partial strand shell formation with regard to the increased Thickness, the reduced temperature and the increased shrinkage. This non-uniform partial strand shell formation leads to longitudinal cracks and, in extreme cases, to the sticking of the strand in the middle of the broadside of the mold and to breakthrough. Parallel to these faults on the strand shell, there are corresponding thermal partial loads on the copper plate, which lead to a reduction in the service life. Furthermore, the device reveals a migration of the strand in the direction of one of the narrow sides with a corresponding risk of breakthrough due to hangers, which can then be counteracted by conicity control.
Die Abweichung des spezifischen Wärmestroms gemessen in kcal/min . m2 bzw. MW/m2 in der mittleren Zone im Vergleich zu den Randzonen gibt ein direktes Maß für das Stellglied betreffend:The deviation of the specific heat flow measured in kcal / min. m 2 or MW / m 2 in the middle zone compared to the peripheral zones gives a direct measure for the actuator regarding:
- die Schmalseitenkonizität die Kühlwassermenge je Kühlzone der Hubhöhe, Frequenz und/oder Oszillationsform der Kokillenoszillation- The narrow side taper the amount of cooling water per cooling zone of the lifting height, frequency and / or form of oscillation of the mold oscillation
Tauchausgußeintauchtiefe während des Gießens.Immersion pouring depth during pouring.
Die hierbei gewonnenen Erkenntnisse führen zur Optimierung:The knowledge gained here leads to optimization:
der Kokillenform der Gießschlacke undthe mold shape of the pouring slag and
Tauchausgußform sowohl innen als auch außen in Verbindung mit der Kokillenform.Immersion mold both inside and outside in connection with the mold.
Die Erfindung erlaubt also nicht nur eine Veränderung der Gießparameter während des Gießens, insbesondere zur Durchbruchsicherung, sondern auch die Entwicklung der Kokillenform im Zusammenspiel mit der Tauchausgußform, sowohl innen wie auch außen und des Gießpulvers zu einem optimalen System "Kokille".The invention therefore not only allows the casting parameters to be changed during the casting, in particular for securing breakthroughs, but also the development of the mold shape in conjunction with the immersion pouring mold, both inside and outside, and of the casting powder to form an optimal “mold” system.
Ein Beispiel der Erfindung ist in der beigefügten Zeichnung dargelegt. Dabei zeigt die Fig. 1 schematisch den Aufbau einer Plattenkokille im Querschnitt und Fig.2 im Längsschnitt.. lm oberen Teil des Bildes ist ein Schnitt in Draufsicht der Kokille gezeigt. Im linken Teil des Bildes ist eine geradwandige Kokille dargestellt zum Stranggießen von Brammen. Die Breitseiten weisen dabei ein erstes Seitensegment 11 und ein Mittensegment 13 auf, die jeweils Kammern besitzen bzw. ein erstes Segment 21 und ein Mittensegment 23, die vertikal angeordnete Bohrungen zur Führung des Kühlwassers besitzen.An example of the invention is set out in the accompanying drawing. 1 shows schematically the structure of a plate mold in cross section and FIG. 2 in longitudinal section. A top view of the mold is shown in the upper part of the picture. In the left part of the picture a straight-walled mold is shown for the continuous casting of slabs. The broad sides have a first side segment 11 and a center segment 13, each of which has chambers, or a first segment 21 and a center segment 23, which have vertically arranged bores for guiding the cooling water.
Zwischen den Breitseiten ist eine über eine Verstellvorrichtung 33 verstellbare Schmalseite 31 eingeklemmt.A narrow side 31 adjustable via an adjusting device 33 is clamped between the broad sides.
Im rechten Teil des Bildes ist eine sogenannte Beulenkokille dargestellt. Sie weist ein Breitensegment 12 und ebenfalls ein Mittensegment 13 auf, die jeweils Kühlkammern besitzen, bzw. ein Seitensegment 22 und ein Mittensegment 23 auf, das Kühlbohrungen besitzt. Im vorliegenden Beispiel sind die Mittensegmente 13 bzw. 23 in die Zonen 14 und 15 bzw. 24 und 25 weiter aufgeteilt.In the right part of the picture a so-called dent mold is shown. It has a width segment 12 and also a center segment 13, each of which has cooling chambers, or a side segment 22 and a center segment 23, which has cooling bores. In the present example, the center segments 13 and 23 are further divided into zones 14 and 15 or 24 and 25.
Zwischen den Breitseiten 12 und 22 ist eine Schmalseite 32 eingeklemmt, die für eine Verstellvorrichtung 33 mittels eines Aktuators 63 verstellbar ist.A narrow side 32 is clamped between the broad sides 12 and 22 and is adjustable for an adjusting device 33 by means of an actuator 63.
Die Breitseiten 11 bis 15 bzw. 21 bis 25 und die Schmalseiten 31 und 32 besitzen Zuführungen 51 , 53, 55, 57 bzw. Abführungen 52, 54, 56 und 58, durch die einThe broad sides 11 to 15 and 21 to 25 and the narrow sides 31 and 32 have feeders 51, 53, 55, 57 and discharges 52, 54, 56 and 58 through which a
Kühlmedium zu- und abführbar ist.Coolant can be supplied and removed.
In den Forminnenraum der Kokille ist ein Tauchgießrohr 41 bzw. 42 eingebracht.An immersion pouring tube 41 or 42 is introduced into the mold interior of the mold.
In der dem vom Innenraum zugewandten Wand 16 bzw. 26 sind Thermofühler 61 und in die Zu- bzw. Abführleitungen 51 bis 58 Thermofühler 64 angeordnet, die mit einem Regler 62 in Verbindung stehen, der auf den Aktuator 63 oder eine nicht weiter dargestellte Oszillationsvorrichtung wirkt.In the wall 16 and 26 facing from the interior, thermal sensors 61 and in the supply and discharge lines 51 to 58, thermal sensors 64 are arranged, which are connected to a controller 62, which acts on the actuator 63 or an oscillation device, not shown .
Im unteren Teil ist die Seitenansicht der Kokille dargestellt mit den identischen bereits erwähnten Positionen. Ergänzend hierzu ist noch die untere VerStelleinrichtung 34 bzw. 36 der Schmalseiten 31 bzw. 32 dargestellt.In the lower part, the side view of the mold is shown with the identical positions already mentioned. In addition, the lower adjusting device 34 or 36 of the narrow sides 31 or 32 is shown.
Weiterhin ist die Kokillenmündung mit 29 bezeichnet PositionslisteFurthermore, the die mouth is designated 29 Position list
Plattenkokille Breitseiten mit KammerPlate mold broadside with chamber
11 Erstes Seitensegment gerade Kokille11 First side segment straight mold
12 Zweites Seitensegment Beulenkokille12 Second side segment of chill mold
13 Mittensegment13 center segment
14 Erstes Teilsegment14 First sub-segment
15 Zweites Teilsegment15 Second sub-segment
16 Wand16 wall
Plattenkokille Breitseiten mit BohrungenPlate mold broadside with holes
21 Erstes Breitseitensegment gerade Kokille21 First broadside segment straight mold
22 Zweites Breitseitensegment Beulenkokille22 Second broadside segment of dent mold
23 Mittensegment23 center segment
24 Erstes Teilsegment Mitte24 First sub-segment middle
25 Zweites Teilsegment Mitte25 Second sub-segment in the middle
26 Wand26 wall
29 Kokillenmündung29 die mouth
SchmalseiteNarrow side
31 Gerade Kokille31 Straight mold
32 Beulenkokille32 dent mold
33 Obere Versteileinrichtung gerade Kokille 34 Untere VerStelleinrichtung gerade Kokille33 Upper adjustment device, straight mold 34 Lower adjustment device, straight mold
35 Obere Versteileinrichtung Beulenkokille35 Upper adjusting device, dent mold
36 Untere VerStelleinrichtung Beulenkokille36 Lower adjustment device for the mold
Tauchgießrohr 41 Zylindrisches Tauchgießrohr 42 abgeflachtes TauchgießrohrImmersion pouring tube 41 Cylindrical immersion pouring tube 42 flattened immersion pouring tube
Kühlmittelsystem 51 Zufuhr Seitensegment 1 52 Abfluß Seitensegment 1 53 Zufuhr MittensegmentCoolant system 51 Inlet side segment 1 52 Drain side segment 1 53 Center segment feed
54 Abfuhr Mittensegement54 Removal of center segment
55 Zufuhr Seitensegment 255 Infeed of side segment 2
56 Abfuhr Seitensegment 2 57 Zufuhr Schmalseite56 Side segment 2 discharge 57 Narrow side feed
58 Abfuhr Schmalseite58 Removal narrow side
TemperaturmessungTemperature measurement
61 Fühler 62 Regler61 sensor 62 controller
63 Aktuator63 actuator
64 Thermofühler Waserzu- bzw. ablauf64 thermal sensor water inlet or outlet
Mittenachse Center axis

Claims

Patentansprüche claims
1. Plattenkokille zur Erzeugung von Strängen aus Stahl, insbesondere Dünnbrammen, mit wassergekühlten Schmalseitenwänden, die zwischen Breitseitenwänden einklemmbar sind, und mit Einrichtungen zum Verstellen des von den Schmal- und Breitseitenwänden gebildeten Formhohlraums an verschiedene Strangabmessungen sowie des Gießkonus, und mit einer Oszillationseinrichtung, dadurch gekennzeichnet, daß die Breitseitenwänden mindestens drei nebeneinander liegende und voneinander unabhängige Kühlsegmente (11 bis 13, 21 bis 23) aufweisen, daß die Kühlsegmente symmetrisch zur Mittenachse (I) der Kokille aufgeteilt sind und daß die Kühlsegmente im Bereich der Kokillenmündung (29) gesonderte Anschlüsse (51 , 53, 55) zur unabhängigen Zufuhr eines flüssigen Kühlmediums aufweisen.1. Plate mold for the production of strands of steel, in particular thin slabs, with water-cooled narrow side walls that can be clamped between wide side walls, and with devices for adjusting the mold cavity formed by the narrow and wide side walls to different strand dimensions and the casting cone, and with an oscillation device, thereby characterized in that the broad side walls have at least three adjacent and independent cooling segments (11 to 13, 21 to 23), that the cooling segments are symmetrical to the central axis (I) of the mold and that the cooling segments in the area of the mold mouth (29) have separate connections (51, 53, 55) for the independent supply of a liquid cooling medium.
2. Plattenkokille nach Anspruch 1 , dadurch gekennzeichnet, daß die Kühlsegmente als Kühlkammern (11 bis 13) ausgebildet sind.2. Plate mold according to claim 1, characterized in that the cooling segments are designed as cooling chambers (11 to 13).
3. Plattenkokille nach Anspruch 2, dadurch gekennzeichnet, daß die äußeren Kammern (11 , 12) der Breitseitenwände baulich gleich aufgebaut sind und daß die mittlere Kammer (13) in weitere in Gießrichtung ausgerichtete Zonen (14, 15) unterteilt ist.3. Plate mold according to claim 2, characterized in that the outer chambers (11, 12) of the broad side walls are structurally identical and that the central chamber (13) is divided into further zones (14, 15) aligned in the casting direction.
4. Plattenkokille nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß in der dem Strang zugewandten Wandung (16) der Kammern (11 - 13) Temperaturfühler (61) vorgesehen sind, mit denen mindestens die Temperaturdifferenzen zwischen den einzelnen Kammern (11 - 13, 12 - 13) bzw. Zonen (11 - 15) erfaßt werden. 4. plate mold according to claim 2 or 3, characterized in that in the wall facing the strand (16) of the chambers (11 - 13) temperature sensors (61) are provided, with which at least the temperature differences between the individual chambers (11 - 13, 12 - 13) or zones (11 - 15) can be detected.
5. Plattenkokille nach Anspruch 4, dadurch gekennzeichnet, daß die Temperaturfühler (61) mit einem Regler (62) in Verbindung stehen, der über einen Aktuator (63) die Konizität der Schmalseiten (31 , 32) steuert.5. Plate mold according to claim 4, characterized in that the temperature sensors (61) are connected to a controller (62) which controls the taper of the narrow sides (31, 32) via an actuator (63).
6. Plattenkokille nach Anspruch 4, dadurch gekennzeichnet, daß die Temperaturfühler (61) mit einem Regler (62) in Verbindung stehen, der den Abgleich der spezifischen Wärmeströme pro Kammer (11 - 15) bzw. Zone6. Plate mold according to claim 4, characterized in that the temperature sensors (61) are connected to a controller (62) which is used to balance the specific heat flows per chamber (11-15) or zone
(14, 15) zueinander durch Veränderung der Oszillationsparameter durchführt.(14, 15) to each other by changing the oscillation parameters.
7. Plattenkokille nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß Temperaturfühler (64) vorgesehen sind, die in den Kühlmittelzu- bzw. ableitungen (51 - 58) angeordnet sind, mit dem Regler (62) in Verbindung stehen 7. Plate mold according to one of the preceding claims, characterized in that temperature sensors (64) are provided, which are arranged in the coolant supply and discharge lines (51 - 58), are connected to the controller (62)
EP96930954A 1995-08-02 1996-07-29 Plate mould for producing steel billets Expired - Lifetime EP0842001B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19529931 1995-08-02
DE19529931A DE19529931C1 (en) 1995-08-02 1995-08-02 Plate mold for the production of steel strands
PCT/DE1996/001445 WO1997004900A1 (en) 1995-08-02 1996-07-29 Plate mould for producing steel billets

Publications (2)

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EP0842001A1 true EP0842001A1 (en) 1998-05-20
EP0842001B1 EP0842001B1 (en) 2001-03-21

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US (1) US6176295B1 (en)
EP (1) EP0842001B1 (en)
JP (1) JP3034957B2 (en)
KR (1) KR100296188B1 (en)
CN (1) CN1075966C (en)
AT (1) ATE199846T1 (en)
AU (1) AU6983896A (en)
BR (1) BR9609810A (en)
DE (3) DE19529931C1 (en)
ES (1) ES2155199T3 (en)
RU (1) RU2142863C1 (en)
WO (1) WO1997004900A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722877C2 (en) * 1997-05-31 1999-09-09 Schloemann Siemag Ag Liquid-cooled continuous casting mold
DE19725433C1 (en) * 1997-06-16 1999-01-21 Schloemann Siemag Ag Method and device for early breakthrough detection in the continuous casting of steel with an oscillating mold
DE19810672B4 (en) * 1998-03-12 2006-02-09 Sms Demag Ag Method and continuous casting mold for producing slab strands, in particular of steel
DE19823797A1 (en) * 1998-05-28 1999-12-09 Daimler Chrysler Ag Apparatus and method for continuous casting of workpieces
EP0992304B1 (en) * 1998-08-24 2003-10-01 SMS Demag AG Process for measuring and regulating temperature and quantity of cooling water in the walls of a continuous casting mould
DE19918835A1 (en) * 1998-12-23 2000-07-06 Sms Demag Ag Method for detecting and regulating the level of the liquid metal in a mold
DE19956577A1 (en) 1999-11-25 2001-05-31 Sms Demag Ag Process for the continuous casting of slabs, in particular thin slabs, and a device for carrying them out
EP1149648B1 (en) * 2000-04-25 2005-07-20 SMS Demag AG Process and device for the thermal control of a continuous casting mould
DE10148150B4 (en) * 2001-09-28 2014-05-22 Egon Evertz Kg (Gmbh & Co.) Liquid-cooled continuous casting mold
US6857464B2 (en) * 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold
DE10304543B3 (en) * 2003-02-04 2004-05-27 Sms Demag Ag Continuous casting of liquid metals, especially liquid steel, comprises partially reducing the heat transfer number during cooling in the region of the heat flow shadow of the submerged nozzle
CN102266919B (en) * 2011-08-03 2013-09-18 田志恒 System and method for on-line width thermal adjustment of crystallizer
CN102581238B (en) * 2012-03-07 2013-12-18 苏州有色金属研究院有限公司 Crystallizer with changeable cooling intensity in semicontinuous casting of aluminum alloy
DE102017220616A1 (en) * 2017-11-17 2019-05-23 Sms Group Gmbh Thin slab caster with changeable machine head

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1327931A (en) * 1962-04-13 1963-05-24 Machine for casting metal parts of indeterminate length, in particular bronze tubes
FR1493301A (en) * 1966-09-20 1967-08-25 United States Steel Corp Welded continuous casting ingot mold
CH552423A (en) * 1972-04-18 1974-08-15 Concast Ag METHOD AND DEVICE FOR CONTROLLING HEAT EXTRACTION IN KOKILLEN DURING CONTINUOUS CASTING.
CH558687A (en) * 1973-03-30 1975-02-14 Concast Ag PROCESS FOR CONTROLLING THE COOLING CAPACITY OF NARROW SIDE WALLS IN PLATE CHILLES DURING CONTINUOUS CASTING AND PLATE CHILLES FOR CARRYING OUT THE PROCESS.
SU917899A1 (en) * 1980-09-02 1982-04-07 Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии Metal continuous casting machine automatic control apparatus
WO1983002911A1 (en) * 1982-02-24 1983-09-01 Yaji, Motoyasu Method of controlling continuous casting facility
FR2541606A1 (en) * 1983-02-28 1984-08-31 Fives Cail Babcock Method for modifying the width of a continuously-cast slab without interrupting casting
JPS59199156A (en) * 1983-04-28 1984-11-12 Nippon Steel Corp Method for controlling oscillation of mold for continuous casting metal
FR2569361B1 (en) * 1984-08-24 1987-02-27 Fives Cail Babcock METHOD FOR ADJUSTING THE INCLINATION OF THE SMALL SIDES OF A SLABS CONTINUOUS LINGOTIERE
DE4117073A1 (en) * 1991-05-22 1992-11-26 Mannesmann Ag TEMPERATURE MEASUREMENT SLAM CHOCOLATE
RU2015806C1 (en) * 1992-08-20 1994-07-15 Производственное объединение "Южуралмаш" Method of continuous metals casting
AT405253B (en) * 1994-10-11 1999-06-25 Voest Alpine Ind Anlagen CONTINUOUS CHOCOLATE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9704900A1 *

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WO1997004900A1 (en) 1997-02-13
CN1075966C (en) 2001-12-12
EP0842001B1 (en) 2001-03-21
RU2142863C1 (en) 1999-12-20
DE19529931C1 (en) 1997-04-03
AU6983896A (en) 1997-02-26
JP3034957B2 (en) 2000-04-17
KR19990036083A (en) 1999-05-25
JPH11500361A (en) 1999-01-12
DE59606639D1 (en) 2001-04-26
ES2155199T3 (en) 2001-05-01
BR9609810A (en) 1999-07-06
US6176295B1 (en) 2001-01-23
ATE199846T1 (en) 2001-04-15
CN1195307A (en) 1998-10-07
KR100296188B1 (en) 2001-10-26
DE19680629D2 (en) 1998-07-23

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