EP1149648A1 - Process and device for the thermal control of a continuous casting mould - Google Patents

Process and device for the thermal control of a continuous casting mould Download PDF

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Publication number
EP1149648A1
EP1149648A1 EP01109725A EP01109725A EP1149648A1 EP 1149648 A1 EP1149648 A1 EP 1149648A1 EP 01109725 A EP01109725 A EP 01109725A EP 01109725 A EP01109725 A EP 01109725A EP 1149648 A1 EP1149648 A1 EP 1149648A1
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EP
European Patent Office
Prior art keywords
mold
water
casting
temperature
outlet
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Application number
EP01109725A
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German (de)
French (fr)
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EP1149648B1 (en
Inventor
Fritz-Peter Prof. Dr. Pleschiutschnigg
Stephan Feldhaus
Jürgen Friedrich
Uwe Kopfstedt
Lothar Parschat
Werner Dr. Rahmfeld
Dieter Stalleicken
Axel Weyer
Erwin Dr. Wosch
Michael Dr. Vonderbank
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SMS Siemag AG
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SMS Demag AG
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Priority claimed from DE10116514A external-priority patent/DE10116514A1/en
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Publication of EP1149648A1 publication Critical patent/EP1149648A1/en
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    • 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 known continuous casting molds whether designed as a traveling mold, such as the 'twin roller' according to a 19th century Bessemer patent, or also as a stand mold, consist of a copper wall, the back is cooled with water via a water distribution box.
  • the mold cooling water (10) assumes a higher temperature T M out (11) with increasing casting speed.
  • the temperature difference (13) between the constant inlet temperature (16) and the variable outlet temperature (11) is a function of the above-mentioned influencing variables.
  • the outlet temperature (11) or the temperature difference (13) and. Will increase with increasing casting speed from VC 1 (4.1) to VC 2 (4.2) thus the mold skin temperature (14) from T 1 (14.1) to T 2 (14.2) and the energy under the energy lobe (15) from (15.1) to (15.2).
  • the water becomes one Heat exchanger (18), which is controllable in its output, to the desired constant Inlet temperature (6) cooled and with the help of a pump station (19) a desired pressure (9) of the mold again.
  • This water cooling system also runs the risk of high casting speeds of 10-15 m / min to reach the 'cold face' of the mold wall (20) for gas film formation, because the evaporation point at a given pressure due to an excessively high temperature is exceeded in the heat transfer area of the copper wall.
  • the invention has for its object a generic method and to create a device with which the mold or continuous casting operation can improve.
  • Part 3 b) provides the variable inlet temperature for the inventive solution a constant outlet temperature of 40 or 30 ° C depending on the Copper plate thickness for two different casting powders A and B.
  • the essential feature of the invention is that at the outlet of the mold water from the mold, a two-way valve (23) is arranged, which with the help of a temperature sensor which is controlled to a constant temperature (24) is set, the water distribution between hot mold water (25) and (via a heat exchanger (26)) cooled mold water (27) is that the outlet temperature (24), for example, with changing casting speeds (4) remains constant.
  • drawing 3 a leaves the completely different situation of the known one Detect cooling.
  • the outlet temperature (11) increases with the casting speed at constant Inlet temperature (6) the outlet temperature (11) and thus the 'hot face' temperature (14), which compares the disadvantages described above well reveal.
  • the function shows that for constant outlet temperatures (24.1) and (24.2) or 'hot face' temperatures (22) and changing copper plate thicknesses (7) as well as casting powder A and B, the inlet temperature T M in (28 ) is changed functionally.
  • the invention makes it clear that with the introduction of a thermostat (24) on the Chill water outlet side for regulating a two-way valve (23) the 'hot face 'temperature of the mold plate is constant regardless of the casting conditions can be held.
  • This solution ensures that the heat flow Undisturbed and constant over the width of the mold, the powder lubrication remains remains constant, the service life of the mold plates above their skin temperature (22) remains more controlled as well as the best conditions for the strand surface even at high casting speeds of up to 15 m / min.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

Process for thermally controlling the copper plate facing the steel in a continuous casting mold comprises maintaining a selected mold cooling water temperature on the mold outlet independent of the casting speed; measuring and regulating the mold outlet temperature using a tubing between the outlet and the inlet; mixing hot mold run-off water with cooled mold run-off water; and driving the water through the mold to maintain a constant temperature. An Independent claim is also included for a device for thermally controlling the copper plate facing the steel in a continuous casting mold. Preferred Features: An oscillating mold is used. The casting speed is up to 15 m/min..

Description

Die bekannten Stranggießkokillen, ob ausgebildet als Wanderkokille, wie beispielsweise der 'Twin Roller' nach einem Bessemer-Patent aus dem 19. Jahrhundert, oder auch als Standkokille, bestehen aus einer Kupferwand, die rückseitig mit Wasser über einen Wasserverteilungskasten gekühlt wird.The known continuous casting molds, whether designed as a traveling mold, such as the 'twin roller' according to a 19th century Bessemer patent, or also as a stand mold, consist of a copper wall, the back is cooled with water via a water distribution box.

Der Stand der Technik sowie dessen Mängel (wie in Figur 1 verdeutlicht), werden im Folgenden beispielhaft an einer oszillierenden Standkokille (1) aufgezeigt, bei der vorzugsweise Stahl mit einem SEN bzw. Tauchausguß (2) und Gießpulver (3) bzw. Gießschlacke (3.1) zu Brammen der Dicke zwischen 150 und 30 mm und einer Breite von max. 3.300 mm mit Gießgeschwindigkeiten (4) bis max. 15 m/min gegossen wird.The prior art and its shortcomings (as illustrated in Figure 1) shown below using an oscillating stand mold (1) as an example preferably steel with a SEN or immersion spout (2) and casting powder (3) or pouring slag (3.1) for slabs between 150 and 30 mm thick a width of max. 3,300 mm with casting speeds (4) up to max. 15 m / min is poured.

Eine solche Kokille wird bisher mit einer Wasserkühlung von beispielsweise 4.000 - 8.000 l/min bei einer Strangbreite (5) von 1.600 mm und einem Druck zwischen 5 - 15 bar versorgt. Diese Wasserkühlung ist so aufgebaut, daß die Wassertemperatur TM in am Eintritt in die Kokille (6) unabhängig von

  • der Gießgeschwindigkeit (4),
  • der Brammenbreite (5),
  • der Kupferplattendicke (7),
  • dem Gießpulver (3),
  • der Gießschlacke (3.1)
  • dem Wasserdruck (9) und
  • der Oszillation (12)
konstant gehalten wird.To date, such a mold has been supplied with water cooling of, for example, 4,000 to 8,000 l / min with a strand width (5) of 1,600 mm and a pressure between 5 and 15 bar. This water cooling is constructed so that the water temperature T M in at the entrance to the mold (6) is independent of
  • the casting speed (4),
  • the slab width (5),
  • the copper plate thickness (7),
  • the mold powder (3),
  • the pouring slag (3.1)
  • the water pressure (9) and
  • oscillation (12)
is kept constant.

Das Kokillenkühlwasser (10) nimmt mit steigender Gießgeschwindigkeit eine höhere Temperatur TM out (11) an. Die Temperaturdifferenz (13) zwischen der konstanten Einlauftemperatur (16) und der variablen Auslauftemperatur (11) ist eine Funktion der oben genannten Einflußgrößen.The mold cooling water (10) assumes a higher temperature T M out (11) with increasing casting speed. The temperature difference (13) between the constant inlet temperature (16) and the variable outlet temperature (11) is a function of the above-mentioned influencing variables.

Betrachtet man das System beispielsweise unter der Annahme, daß alle Einflußgrößen bis auf die Gießgeschwindigkeit konstant gehalten werden, so steigen mit größer werdender Gießgeschwindigkeit von VC1 (4.1) auf VC2 (4.2) die Auslauftemperatur (11) oder die Temperaturdifferenz (13) und damit die Kokillenhauttemperatur (14) von T1 (14.1) auf T2 (14.2) sowie die Energie unter der Energiekeule (15) von (15.1) auf (15.2) an.If you consider the system, for example, on the assumption that all influencing variables are kept constant except for the casting speed, the outlet temperature (11) or the temperature difference (13) and. Will increase with increasing casting speed from VC 1 (4.1) to VC 2 (4.2) thus the mold skin temperature (14) from T 1 (14.1) to T 2 (14.2) and the energy under the energy lobe (15) from (15.1) to (15.2).

Es ist also festzuhalten, daß mit sich ändernder Gießgeschwindigkeit (4) sowie sich ändernden Einflußgrößen, die oben aufgezählt worden sind, sich die 'hot face'-Temperatur (14) ändert, was zu sich ständig ändernder Schmierung der Strangschale (16) und des Wärmestromes (17) in die Kokille führt. Diese sich ändernden Gießbedingungen führen zu Störungen im Gießprozess sowie in der Strangoberfläche.It should be noted that with changing casting speed (4) and changing influencing factors, which have been listed above, the 'hot face 'temperature (14) changes, resulting in constantly changing lubrication of the Strand shell (16) and the heat flow (17) leads into the mold. This changing Casting conditions lead to disruptions in the casting process as well as in the Strand surface.

Beschreibt man den restlichen Wasserkreislauf, so wird das Wasser in einem Wärmetauscher (18), der in seiner Leistung steuerbar ist, auf die gewünschte konstante Einlauftemperatur (6) gekühlt und mit Hilfe einer Pumpenstation (19) mit einem gewünschten Druck (9) der Kokille wieder zugeführt. Dieses Wasserkühlsystem läuft außerdem Gefahr, bei hohen Gießgeschwindigkeiten von 10 - 15 m/min an der 'cold face' der Kokillenwand (20) zur Gasfilmbildung zu gelangen, da der Verdampfungspunkt bei vorgegebenem Druck durch eine zu hohe Temperatur im Wärmeübergangsbereich der Kupferwand überschritten wird.If you describe the rest of the water cycle, the water becomes one Heat exchanger (18), which is controllable in its output, to the desired constant Inlet temperature (6) cooled and with the help of a pump station (19) a desired pressure (9) of the mold again. This water cooling system also runs the risk of high casting speeds of 10-15 m / min to reach the 'cold face' of the mold wall (20) for gas film formation, because the evaporation point at a given pressure due to an excessively high temperature is exceeded in the heat transfer area of the copper wall.

Zu erwähnen ist, daß der Wärmetauscher (18) über einen Kühlturm (21) mit Pumpenstation (21.1) gekühlt wird.It should be mentioned that the heat exchanger (18) via a cooling tower (21) with a pump station (21.1) is cooled.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren und eine Vorrichtung zu schaffen, mit denen sich der Kokillen- bzw. Stranggießbetrieb verbessern läßt.The invention has for its object a generic method and to create a device with which the mold or continuous casting operation can improve.

Eine unerwartete, für den Fachmann nicht selbstverständliche Lösung stellen die in den Patentansprüchen beschriebenen Merkmale dar. Erfindungsgemäß läßt sich dabei ein Kokillenkühlsystem erreichen, bei dem die Kokillenhauttemperatur 'hot face' (14) bei wechselnden Gießbedingungen konstant und unter Kontrolle bleibt, um konstante Bedingungen für das Gießpulver (3) und die Gießschlacke (3.1) sowie einen ungestörten Wärmestrom (17) über die Gießbreite ohne eine Gasfilmbildung (Leidenfrost-Effekt) sicherzustellen.An unexpected solution that is not a matter of course for the expert is the features described in the claims. According to the invention a mold cooling system is reached in which the mold skin temperature 'hot face' (14) constant and under control with changing casting conditions remains to constant conditions for the mold powder (3) and the pouring slag (3.1) and an undisturbed heat flow (17) across the casting width without one Ensure gas film formation (Leidenfrost effect).

In den Figuren 1 bis 3 ist der Stand der Technik sowie die erfinderische Lösung beispielhaft für eine oszillierende Dünnbrammenkokille mit Gießgeschwindigkeiten bis zu 15 m/min beschrieben.

  • Figur 1 stellt den Stand der Technik dar und wurde bereits im Detail beschrieben;
  • Figur 2 stellt die erfinderische Lösung beispielhaft für eine Dünnbramrne mit Gießgeschwindigkeiten bis zu 15 m/min in Queransicht, Teilbild 2 a) und in Dickenrichtung, Teilbild 2 b) dar;
  • Figur 3 stellt im Teilbild 3 a) sowohl den Verlauf der Einlauftemperatur der variablen Wassereinlauftemperatur in Funktion von der Gießgeschwindigkeit bei konstanter Auslauftemperatur (Erfindung) als auch die Wasserauslauftemperatur in Funktion von der Gießgeschwindigkeit bei konstanter Einlauftemperatur (Stand der Technik) dar; und
    • FIGS. 1 to 3 describe the prior art and the solution according to the invention by way of example for an oscillating thin slab mold with casting speeds of up to 15 m / min.
  • Figure 1 represents the prior art and has already been described in detail;
  • FIG. 2 shows the inventive solution as an example for a thin slab with casting speeds of up to 15 m / min in a transverse view, partial image 2a) and in the direction of thickness, partial image 2b);
  • Figure 3 shows in part 3 a) both the course of the inlet temperature of the variable water inlet temperature as a function of the pouring speed at a constant outlet temperature (invention) and the water outlet temperature as a function of the pouring speed at a constant inlet temperature (prior art); and

    • Teilbild 3 b) stellt für die erfinderische Lösung die variable Einlauftemperatur bei einer konstanten Auslauftemperatur von 40 oder 30 °C in Abhängigkeit von der Kupferplattendicke für zwei unterschiedliche Gießpulver A und B dar.Part 3 b) provides the variable inlet temperature for the inventive solution a constant outlet temperature of 40 or 30 ° C depending on the Copper plate thickness for two different casting powders A and B.

    In Figur 2 wird die erfinderische Lösung der Kokillenkühlung, die eine konstante 'hot face'-Temperatur (22) bei wechselnden Gießgeschwindigkeiten (4.1) und (4.2) und/oder andere Parameter wie

    • Brammenbreite (5),
    • Kupferplattendicke (7),
    • Gießpulver (3),
    • Gießschlacke (3.1),
    • Wasserdruck und
    • Oszillation (12)
    sicherstellt, wiedergegeben.FIG. 2 shows the inventive solution of mold cooling, which has a constant 'hot face' temperature (22) with changing casting speeds (4.1) and (4.2) and / or other parameters
    • Slab width (5),
    • Copper plate thickness (7),
    • Casting powder (3),
    • Pouring slag (3.1),
    • Water pressure and
    • Oscillation (12)
    ensures reproduced.

    Das wesentliche Merkmal der Erfindung besteht darin, daß am Austritt des Kokillenwassers aus der Kokille ein Zweiwegeventil (23) angeordnet ist, das mit Hilfe eines Temperaturmeßfühlers, der auf eine kontrollierte konstante Temperatur (24) eingestellt wird, die Wasserverteilung zwischen heißem Kokillenwasser (25) und (über einen Wärmetauscher (26)) gekühltem Kokillenwasser (27) so vorgenommen wird, daß die Auslauftemperatur (24) beispielsweise bei wechselnden Gießgeschwindigkeiten (4) konstant bleibt. The essential feature of the invention is that at the outlet of the mold water from the mold, a two-way valve (23) is arranged, which with the help of a temperature sensor which is controlled to a constant temperature (24) is set, the water distribution between hot mold water (25) and (via a heat exchanger (26)) cooled mold water (27) is that the outlet temperature (24), for example, with changing casting speeds (4) remains constant.

    Mit dieser Umkehr der konstant zu haltenden Wassertemperatur von der Einlaufseite auf die Auslaufseite der Kokille verändert sich die Wassereinlauftemperatur (28) ständig mit wechselnden Gießparametern. Außerdem ist wesentlich, daß zwischen Kokillenwasserauslauf (29) und Kokillenwassereinlauf. (30).eine möglichst kurze Verrohrung - bypass - (31) angeordnet ist, die mit dem Kokillenkreislauf (27), der über den Wärmetauscher (26) geführt wird, unmittelbar vor dem Kokillenwassereinlauf (30) in einem Knotenpunkt (32) zusammengeführt wird. Zwischen dem Rohrknotenpunkt (31) und dem Kokilleneinlauf (30) ist dann eine Pumpenstation (33) angeordnet.With this reversal of the constant water temperature from the inlet side The water inlet temperature changes on the outlet side of the mold (28) constantly changing casting parameters. It is also essential that between the mold water outlet (29) and the mold water inlet. (30). One if possible short piping - bypass - (31) which is arranged with the mold circuit (27), which is passed over the heat exchanger (26), immediately before the mold water inlet (30) is brought together in a node (32). Between the pipe node (31) and the mold inlet (30) is then one Pump station (33) arranged.

    In der Figur 3 a) ist nun die Funktion der erfinderischen Lösung, nämlich die Wassereinlauftemperatur, TM in (28) über der Gießgeschwindigkeit (4) bei konstanter Auslauftemperatur, TM out = const. = 40 °C (24) dargestellt. Diese Funktion läßt erkennen, daß die 'hot face'-Temperatur (22) mit sich ändernder Gießgeschwindigkeit konstant sinkt.In FIG. 3 a) the function of the solution according to the invention, namely the water inlet temperature, T M in (28) over the pouring speed (4) at a constant outlet temperature, T M out = const. = 40 ° C (24). This function shows that the 'hot face' temperature (22) drops constantly with changing casting speed.

    Dagegen läßt das Teilbild 3 a) die demgegenüber völlig andere Situation der bekannten Kühlungen erkennen. Hier steigt mit der Gießgeschwindigkeit bei konstanter Einlauftemperatur (6) die Auslauftemperatur (11) und damit die 'hot face'-Temperatur (14), womit die oben beschriebenen Nachteile sich im Vergleich gut erkennen lassen.In contrast, drawing 3 a) leaves the completely different situation of the known one Detect cooling. Here increases with the casting speed at constant Inlet temperature (6) the outlet temperature (11) and thus the 'hot face' temperature (14), which compares the disadvantages described above well reveal.

    Das Teilbild 3 b) stellt nun für unterschiedliche Kupferplattendicken (7) die sich ändernde Einlauftemperatur (28) für die Fälle der konstanten Auslauftemperaturen (24) von 40 °C (24.1) und 30 °C (24.2) und den Gießpulvem A oder B bei konstanten Prozeßdaten wie

    • der Gießgeschwindigkeit von 6 m/min,
    • der Gießbreite von 1.200 mm und
    • der max. Gießbreite von 1.600 mm sowie
    • dem Druck von 12 bar und
    • der Wassermenge von 6.000 l/min
    dar.Sub-picture 3 b) now provides the changing inlet temperature (28) for different copper plate thicknesses (7) for the cases of constant outlet temperatures (24) of 40 ° C (24.1) and 30 ° C (24.2) and the casting powders A or B. constant process data such as
    • the casting speed of 6 m / min,
    • the casting width of 1,200 mm and
    • the max. Casting width of 1,600 mm as well
    • the pressure of 12 bar and
    • the water volume of 6,000 l / min
    represents.

    Die Funktion läßt im Falle der erfinderischen Lösung erkennen, daß für konstante Auslauftemperaturen (24.1) und (24.2) oder 'hot face'-Temperaturen (22) und sich ändernden Kupferplattendicken (7) sowie Gießpulver A und B die Einlauftemperatur TM in (28) funktional verändert wird.In the case of the inventive solution, the function shows that for constant outlet temperatures (24.1) and (24.2) or 'hot face' temperatures (22) and changing copper plate thicknesses (7) as well as casting powder A and B, the inlet temperature T M in (28 ) is changed functionally.

    Die Erfindung macht deutlich, daß mit Einführung eines Thermostaten (24) auf die Kokillenwasserauslaufseite zum Ausregeln eines Zweiwegeventils (23) die 'hot face'-Temperatur der Kokillenplatte unabhängig von den Gießbedingungen konstant gehalten werden kann. Diese Lösung stellt sicher, daß der Wärmestrom über die Kokillenbreite ungestört und konstant bleibt, daß die Gießpulverschmierung konstant bleibt, die Standzeit der Kokillenplatten über ihre Hauttemperatur (22) kontrollierter bleibt sowie die besten Bedingungen für die Strangoberfläche selbst bei hohen Gießgeschwindigkeiten von bis zu 15 m/min gegeben sind. The invention makes it clear that with the introduction of a thermostat (24) on the Chill water outlet side for regulating a two-way valve (23) the 'hot face 'temperature of the mold plate is constant regardless of the casting conditions can be held. This solution ensures that the heat flow Undisturbed and constant over the width of the mold, the powder lubrication remains remains constant, the service life of the mold plates above their skin temperature (22) remains more controlled as well as the best conditions for the strand surface even at high casting speeds of up to 15 m / min.

    Bezugszeichenreference numeral

    11
    Kokille, oszillierende StandkokilleChill mold, oscillating stand mold
    22nd
    Tauchausguß, SENDiving spout, SEN
    33rd
    GießpulverMold powder
    3.13.1
    GießschlackePouring slag
    44th
    Gießgeschwindigkeit, VCCasting speed, VC
    4.14.1
    VC1 VC 1
    4.24.2
    VC2, VC1 < VC2 VC 2 , VC 1 <VC 2
    55
    GießbreiteCasting width
    5.15.1
    max. GießbreiteMax. Casting width
    66
    konstante Kokillenkühlwassereinlauftemperatur TM in = const.constant mold cooling water inlet temperature T M in = const.
    77
    KupferplattendickeCopper plate thickness
    7.17.1
    max. KupferplattendickeMax. Copper plate thickness
    8.8th.
    halbe Gießdickehalf casting thickness
    8.18.1
    StrangmitteStrand center
    99
    WasserdruckWater pressure
    1010th
    KokillenkühlwasserChilled water
    1111
    Kokillenkühlwasserauslauftemperatur, TM out = variabel, TM in < TM out Mold cooling water outlet temperature, T M out = variable, T M in <T M out
    1212th
    Oszillation, Frequenz, Hubhöhe, OszillationsformOscillation, frequency, lifting height, form of oscillation
    1313
    Temperaturdifferenz zwischen TM out(11) und TM in= const. (6)Temperature difference between T M out (11) and T M in = const. (6)
    1414
    Kokillenhauttemperatur, 'hot face'; variabelMold skin temperature, 'hot face'; variable
    14.114.1
    'hot face'-Temperatur, T1 bezogen auf VC1 (4.1)'hot face' temperature, T 1 related to VC 1 (4.1)
    14.214.2
    'hot face'-Temperatur, T2 bezogen auf VC2 (4.2), T2 'hot face' temperature, T 2 related to VC 2 (4.2), T 2
    1515
    Energiekeule, Form der Energieverteilung über die KokillenhöheEnergy club, form of energy distribution over the mold height
    15.115.1
    Energiekeule bei VC1 (4.1)Energy club at VC 1 (4.1)
    15.215.2
    Energiekeule bei VC2 (4.2)Energy club at VC 2 (4.2)
    1616
    StrangschaleStrand shell
    1717th
    Wärmestrom von Strangmitte (8.1) in die Kokille (1)Heat flow from the middle of the strand (8.1) into the mold (1)
    1818th
    leistungsvariabler Wärmetauscherperformance variable heat exchanger
    1919th
    Pumpenstation für den inneren und geschlossenen KühlwasserkreislaufPump station for the internal and closed cooling water circuit
    2020th
    'cold face' der Kokillenwand, wasserzugewandte Kokillenkupferplatte'cold face' of the mold wall, water-facing mold copper plate
    2121
    Kühlturm, offener KühlkreislaufCooling tower, open cooling circuit
    21.121.1
    PumpenstationPump station
    2222
    konstante 'hot face'-Temperatur, erfinderische Lösung T-Inventionconstant 'hot face' temperature, inventive solution T-Invention
    22.122.1
    'hot face'-Temperatur T1-Inv., bezogen auf VC1 (4.1)'hot face' temperature T 1 -Inv., based on VC 1 (4.1)
    22.222.2
    'hot face'-Temperatur T2-Inv., bezogen auf VC2 (4.2), T1-Inv. = T2-Inv.'hot face' temperature T 2 -Inv., based on VC 2 (4.2), T 1 -Inv. = T 2 inv.
    2323
    ZweiwegeventilTwo-way valve
    23.123.1
    Thermostat bestehend aus 23 und 24Thermostat consisting of 23 and 24
    2424th
    Temperaturmeßfühler mit konstanter Wassertemperatur; TM out = const.Temperature sensor with constant water temperature; T M out = const.
    24.124.1
    konstante Auslauftemperatur bei beispielsweise 40 °Cconstant outlet temperature at 40 ° C, for example
    24.224.2
    konstante Auslauftemperatur bei beispielsweise 30 °Cconstant outlet temperature at 30 ° C, for example
    2525th
    heißes Kokillenwasser mit konstanter Temperatur TM out (24)hot mold water with constant temperature T M out (24)
    2626
    Wärmetauscher, ausgelegt für 'worst case' max. Gießgeschwindigkeit, max. Gießbreite (5.1), max. Kupferplattendicke (7.1)Heat exchanger, designed for 'worst case' max. Casting speed, max. Casting width (5.1), max. Copper plate thickness (7.1)
    2727
    gekühlter Kokillenkühlwasserkreislaufcooled mold cooling water circuit
    2828
    Wassereinlauftemperatur, TM in = variabelWater inlet temperature, T M in = variable
    2929
    KokillenwasserauslaufPermanent mold spout
    3030th
    KokillenwassereinlaufMold water inlet
    3131
    kurze Verrohrung - bypass - zwischen Kokillenauslauf (29) und Kokilleneinlauf (30)short piping - bypass - between the mold outlet (29) and the mold inlet (30)
    3232
    Kostenpunkt für 'bypass' (31) und gekühlten Kokillenkühlwasserkreislauf (27)Cost for 'bypass' (31) and chilled mold cooling water circuit (27)
    3333
    Pumpenstation zwischen Knotenpunkt (32) und Kokillenwassereinlauf (30)Pump station between the node (32) and the mold water inlet (30)

    Claims (10)

    Verfahren zur thermischen Kontrolle der dem Stahl zugewandten Kupferplatte einer Stranggießgkokille, für unterschiedliche Gießgeschwindigkeiten, Kupferplattendicken, Gießformate, Wassermengen und Wasserdrücke,
    dadurch gekennzeichnet, daß eine wählbare Kokillenkühlwassertemperatur am Kokillenauslauf, unabhängig von der Gießgeschwindigkeit konstant gehalten wird, die Kokillenauslauftemperatur mit Hilfe einer Kurzverrohrung zwischen dem Kokillenauslauf und dem Kokilleneinlauf und eines Zweiwegeventils mit Abzweigverrohrung für eine Teilmenge des Kokillenauslaufwassers auf einen Wärmetauscher gemessen und geregelt wird, und das heiße Kokillenauslaufwasser mit dem gekühlten Kokillenauslaufwasser gemischt wird und in Abhängigkeit von den Gießbedingungen temperaturkontrolliertes Kokilleneinlaufwasser, geregelt in Wassermenge und Wasserdruck, mittels Pumpstation so durch die Kokille getrieben wird, daß das Kokillenwasser am Kokillenausgang eine konstante Temperatur aufweist.     Process for the thermal control of the copper plate of a continuous casting mold facing the steel, for different casting speeds, copper plate thicknesses, casting formats, water quantities and water pressures,
    characterized, that a selectable mold cooling water temperature at the mold outlet is kept constant, irrespective of the casting speed, the mold outlet temperature is measured and regulated using a short piping between the mold outlet and the mold inlet and a two-way valve with branch piping for a portion of the mold outlet water on a heat exchanger, and the hot mold outlet water is mixed with the cooled mold outlet water and, depending on the casting conditions, temperature-controlled mold inlet water, regulated in terms of water quantity and water pressure, is driven through the mold by means of a pumping station in such a way that the mold water at the mold outlet has a constant temperature.     Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß eine oszillierende Standkokille eingesetzt wird.     Method according to claim 1,
    characterized in that an oscillating stand mold is used.         Verfahren nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß ein Tauchausguß und Gießpulver eingesetzt werden.    The method of claim 1 or 2,
    characterized in that a dip spout and casting powder are used.         Verfahren nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß mit einer Gießgeschwindigkeit bis max. 15 m/min gegossen wird.    Method according to one of claims 1 to 3,
    characterized in that with a casting speed up to max. 15 m / min is poured.         Verfahren nach einem Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daß Brammen der Abmessung 150 - 30 mm x max. 3.300 mm gegossen werden.    Method according to one of claims 1 to 4,
    characterized in that slabs measuring 150-30 mm x max. 3.300 mm can be cast.         Verfahren nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, daß die Schmalseiten und Breitseiten einer Brammenkokille separat behandelt werden.    Method according to one of claims 1 to 5,
    characterized in that the narrow sides and broad sides of a slab mold are treated separately.         Vorrichtung zur thermischen Kontrolle der dem Stahl zugewandten Kupferplatte einer Stranggiegkokille, für unterschiedliche Gießgeschwindigkeiten, Kupferplattendicken, Gießformate, Wassermengen und Wasserdrücke, insbesondere zur Durchführung des Verfahrens nach Anspruch 1,
    dadurch gekennzeichnet, daß eine Temperaturmessung am Kokillenauslauf (24), ein Zweiwegeventil (23) zur Verteilung des Kokillenauslaufwassers, eine Kurzverrohrung, bypass, (31) zwischen Zweiwegeventil (23) und Knotenpunkt (32) für bypass und gekühlten Kokillenkühlwasserkreislauf (27) unmittelbar vom Kokillenwassereinlauf (30) und ein Knotenpunkt (32) unmittelbar vor der Pumpenstation (33) zwischen Knotenpunkt (32) und Kokillenwassereinlauf (30) vorgesehen sind.    Device for the thermal control of the copper plate of a continuous casting mold facing the steel, for different casting speeds, copper plate thicknesses, casting formats, water quantities and water pressures, in particular for carrying out the method according to claim 1,
    characterized, that a temperature measurement at the mold outlet (24), a two-way valve (23) for distributing the mold outlet water, a short piping, bypass, (31) between two-way valve (23) and node (32) for bypass and cooled mold cooling water circuit (27) directly from the mold water inlet (30) and a node (32) immediately before the pump station (33) between the node (32) and the mold water inlet (30) are provided.         Vorrichtung nach Anspruch 7,
    gekennzeichnet durch,
    eine Gießgeschwindigkeit bis max. 15 m/min.    Device according to claim 7,
    marked by,
    a casting speed up to max. 15 m / min.         Vorrichtung nach Anspruch 7 bis 8,
    dadurch gekennzeichnet, daß am Kokillenausgang (29) ein Thermostat (23.1), bestehend aus Temperaturmeßfühler (24) und Zweiwegeventil (23), angeordnet ist.    Device according to claims 7 to 8,
    characterized in that a thermostat (23.1) consisting of a temperature sensor (24) and a two-way valve (23) is arranged at the mold outlet (29).         Vorrichtung nach einem der Ansprüche 7 bis 9,
    dadurch gekennzeichnet, daß ein Thermostat (23.1) separat für Breitseiten und Schmalseiten einer Brammen-, Vorblock- oder Beam Blank-Kokille vorgesehen ist.    Device according to one of claims 7 to 9,
    characterized in that a thermostat (23.1) is provided separately for the broad and narrow sides of a slab, bloom or beam blank mold.
    EP01109725A 2000-04-25 2001-04-20 Process and device for the thermal control of a continuous casting mould Expired - Lifetime EP1149648B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    DE10020181 2000-04-25
    DE10020181 2000-04-25
    DE10116514A DE10116514A1 (en) 2000-04-25 2001-04-03 Method and device for the thermal control of a continuous casting mold
    DE10016514 2001-04-03

    Publications (2)

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    EP1149648A1 true EP1149648A1 (en) 2001-10-31
    EP1149648B1 EP1149648B1 (en) 2005-07-20

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    EP01109725A Expired - Lifetime EP1149648B1 (en) 2000-04-25 2001-04-20 Process and device for the thermal control of a continuous casting mould

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    US (1) US6543519B2 (en)
    EP (1) EP1149648B1 (en)
    JP (1) JP2001314943A (en)
    AT (1) ATE299766T1 (en)

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    WO2002085555A2 (en) * 2001-04-20 2002-10-31 Sms Demag Aktiengesellschaft Method and device for continuously casting metal
    DE102009051132A1 (en) * 2009-10-28 2011-05-05 Siemens Aktiengesellschaft Heat recovery and overheating degradation of a molten metal in a continuous casting process
    CN106825472A (en) * 2017-03-29 2017-06-13 中天钢铁集团有限公司 Continuous cast mold accident water safety interlock system and its control method

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    FR2940978B1 (en) * 2009-01-09 2011-11-11 Fives Stein METHOD AND COOLING SECTION OF A METAL BAND THROUGH A PROJECTION OF A LIQUID
    CN102513514B (en) * 2011-12-20 2014-04-02 秦皇岛首秦金属材料有限公司 Method for controlling accident treatment equipment of 400mm extra-thick slabs
    CN103736950B (en) * 2014-01-22 2016-02-17 西安科唯电热科技有限公司 A kind of horizontal continuous casting apparatus and continuous cast method
    JP6070605B2 (en) * 2014-03-05 2017-02-01 Ｊｆｅスチール株式会社 Steel continuous casting method
    CN104148600A (en) * 2014-08-12 2014-11-19 北京首钢股份有限公司 Slab solidifying system and method
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    CN106825472A (en) * 2017-03-29 2017-06-13 中天钢铁集团有限公司 Continuous cast mold accident water safety interlock system and its control method

    Also Published As

    Publication number Publication date
    JP2001314943A (en) 2001-11-13
    ATE299766T1 (en) 2005-08-15
    EP1149648B1 (en) 2005-07-20
    US6543519B2 (en) 2003-04-08
    US20020020513A1 (en) 2002-02-21

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