EP3616807A1 - Wide end of a continuous casting mould with variable measuring position density for improved longitudinal tear detection - Google Patents

Wide end of a continuous casting mould with variable measuring position density for improved longitudinal tear detection Download PDF

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Publication number
EP3616807A1
EP3616807A1 EP19192066.9A EP19192066A EP3616807A1 EP 3616807 A1 EP3616807 A1 EP 3616807A1 EP 19192066 A EP19192066 A EP 19192066A EP 3616807 A1 EP3616807 A1 EP 3616807A1
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EP
European Patent Office
Prior art keywords
temperature measuring
continuous casting
measuring elements
casting mold
mold according
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Granted
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EP19192066.9A
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German (de)
French (fr)
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EP3616807B1 (en
Inventor
Jörn HOFFMEISTER
Matthias Arzberger
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SMS Group GmbH
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SMS Group GmbH
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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
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
    • 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
    • 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
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
    • B22D11/202—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level by measuring temperature

Definitions

  • the invention relates to a continuous casting mold, comprising two side walls arranged adjacent to one another, which are each formed by at least one copper plate, a number of temperature measuring elements being installed in the copper plates to monitor the formation of longitudinal cracks in the casting strand and spaced apart from one another in the horizontal direction.
  • a continuous casting mold of the generic type is for example in the US 9 709 515 B2 described.
  • a uniformly arranged hole pattern is worked into the copper plates of the mold, a large number of temperature measuring elements being arranged uniformly distributed over the surface of the copper plate in order to be able to observe the temperature profile during the casting process. This enables cracks in the cast strand to be recognized during production.
  • Similar solutions reveal that WO 2009/149680 A1 , the CN 101985166 B and the JP 2008073748A ,
  • a sufficiently precise temperature monitoring can take place in a certain diameter range around the temperature measuring element.
  • there is sometimes insufficient overlap which creates a blind area that cannot be adequately monitored.
  • there is a detection area for longitudinal cracks which can measure the temperature within a distance of 50 mm around the temperature measuring element. If the temperature measuring elements are 200 mm apart (which is typically provided in the prior art), a blind area of 100 mm results between two measuring elements.
  • the object of the invention is to develop a continuous casting mold of the generic type in such a way that it becomes possible to better identify production defects at an early stage.
  • the effort should not be excessive, especially as far as the supply of temperature measuring elements is concerned.
  • the solution to this problem by the invention is characterized in that the temperature measuring elements are arranged at a first horizontal distance in a horizontally extending central region of the copper plates and that in the lateral regions of the copper plates which adjoin the central region and extend in the horizontal direction, the temperature measuring elements in a second horizontal distance are arranged, wherein the first horizontal distance is smaller than the second horizontal distance.
  • the central region preferably extends over a horizontal extent of at least 200 mm, particularly preferably over at least 300 mm.
  • the first horizontal distance is preferably less than 100 mm, particularly preferably less than 80 mm.
  • the second horizontal distance is preferably greater than 100 mm, particularly preferably greater than 120 mm.
  • At least four temperature measuring elements are preferably arranged one above the other in the vertical direction.
  • fewer temperature measuring elements are preferably arranged one above the other in the side regions in the vertical direction than in the central region.
  • two temperature measuring elements can be arranged one above the other in the vertical vertical direction.
  • the temperature measuring elements can also be arranged closer in the horizontal direction than in the end sections of the central area.
  • the temperature measuring elements are preferably part of a glass fiber cable.
  • the temperature measuring elements can be arranged in the area of fixing bolts for the copper plate.
  • the proposal according to the invention is therefore based on providing the mold broadside, in particular a slab or thin slab continuous casting mold, with a variable measuring point density in order to enable improved longitudinal crack detection.
  • a targeted increase in the measuring point density in the horizontal direction is provided in the copper plate in special areas, especially in the middle area of the copper plate, which surprisingly has shown that longitudinal cracks can be detected much more simply and reliably as a result.
  • thermocouples or optical fibers can be integrated into the copper plates of the mold, which means that the temperature can be recorded in individual vertical measuring levels.
  • FIGs 1 and 2 is a continuous casting mold 1 ( Figure 2 ) or a copper plate 4, 5 of the same ( Figure 1 ).
  • Side walls 2 and 3 of the mold 1 are each formed by a copper plate 4 and 5, respectively.
  • the casting strand 6 is formed between the two copper plates 4, 5.
  • Fixing bolts 8 are provided for fastening the copper plates 4, 5; the fixing bolts 8 are at a distance P in the copper plate.
  • the copper plates 4, 5 are each supported by a support frame 13 for the mold broadside.
  • Each copper plate 4, 5 has an overall width Wcu and a height H.
  • temperature measuring elements 7 are installed, as is best known Figure 3 can be seen. Three temperature measuring elements 7 are shown here, which are arranged adjacent to one another in the horizontal direction Ho.
  • FIG. 3 it can also be seen how the casting strand is formed.
  • a strand shell 9 is shown, which bears against the copper plate 4, 5;
  • Liquid steel 10 is located in the interior of the casting strand.
  • the respective current temperature TC 1 , TC 2 , TC 3 is recorded at respective temperature measuring points 12.
  • a crack 11 in the strand shell is also shown, which is to be detected by monitoring the temperatures of the temperature measuring elements.
  • a longitudinal crack 11 in the cast strand can or must be assumed if the temperature measured by the temperature measuring element 7 is lower in several (e.g. four) measuring points in the central area M than in the two adjacent areas.
  • the temperature measuring elements 7 are arranged at a first horizontal distance d h1 , while those in the central region M which follow and in which Horizontal direction Ho extending side areas S of the copper plates 4, 5, the temperature measuring elements 7 are arranged at a second horizontal distance d h2 ; the first horizontal distance d h1 is smaller than the second horizontal distance d h2 .
  • further temperature measuring elements can also be arranged in the spaces between two temperature measuring elements.
  • the temperature measuring elements 7 are arranged even closer together than in the edge areas of the central area; The temperature measuring elements 7 in the side areas S are then further objected to.

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

Abstract

Die Erfindung betrifft eine Stranggießkokille (1), umfassend zwei benachbart zueinander angeordnete Seitenwände (2, 3), die durch jeweils mindestens eine Kupferplatte (4, 5) gebildet werden, wobei in den Kupferplatten (4, 5) zur Überwachung der Bildung von Längsrissen im Gießstrang (6) eine Anzahl an Temperaturmesselementen (7) eingebaut sind, die in Horizontalrichtung (Ho) voneinander beabstandet sind. Um Produktionsdefekte verbessert in einem frühen Stadium erkennen zu können, sieht die Erfindung vor, dass in einem sich in Horizontalrichtung (Ho) erstreckenden Mittenbereich (M) der Kupferplatten (4, 5) die Temperaturmesselemente (7) in einem ersten horizontalen Abstand (d<sub>h1</sub>) angeordnet sind und dass in den sich an den Mittenbereich (M) anschließenden und sich in Horizontalrichtung (Ho) erstreckenden Seitenbereichen (S) der Kupferplatten (4, 5) die Temperaturmesselemente (7) in einem zweiten horizontalen Abstand (d<sub>h2</sub>) angeordnet sind, wobei der erste horizontale Abstand (d<sub>h1</sub>) kleiner ist als der zweite horizontale Abstand (d<sub>h2</sub>).The invention relates to a continuous casting mold (1) comprising two side walls (2, 3) arranged adjacent to one another, each of which is formed by at least one copper plate (4, 5), the copper plates (4, 5) being used to monitor the formation of longitudinal cracks A number of temperature measuring elements (7) are installed in the casting strand (6) and are spaced apart from one another in the horizontal direction (Ho). In order to be able to better detect production defects at an early stage, the invention provides that the temperature measuring elements (7) at a first horizontal distance (d <) in a central region (M) of the copper plates (4, 5) extending in the horizontal direction (Ho) sub> h1 </sub>) and that in the side regions (S) of the copper plates (4, 5) which adjoin the central region (M) and extend in the horizontal direction (Ho), the temperature measuring elements (7) are arranged in a second horizontal one Distance (d <sub> h2 </sub>) are arranged, the first horizontal distance (d <sub> h1 </sub>) being smaller than the second horizontal distance (d <sub> h2 </sub>).

Description

Die Erfindung betrifft eine Stranggießkokille, umfassend zwei benachbart zueinander angeordnete Seitenwände, die durch jeweils mindestens eine Kupferplatte gebildet werden, wobei in den Kupferplatten zur Überwachung der Bildung von Längsrissen im Gießstrang eine Anzahl an Temperaturmesselementen eingebaut sind, die in Horizontalrichtung voneinander beabstandet sind.The invention relates to a continuous casting mold, comprising two side walls arranged adjacent to one another, which are each formed by at least one copper plate, a number of temperature measuring elements being installed in the copper plates to monitor the formation of longitudinal cracks in the casting strand and spaced apart from one another in the horizontal direction.

Eine Stranggießkokille der gattungsgemäßen Art ist beispielsweise in der US 9 709 515 B2 beschrieben. In den Kupferplatten der Kokille ist ein gleichmäßig angeordnetes Lochmuster eingearbeitet, wobei eine Vielzahl von Temperaturmesselementen gleichmäßig verteilt über die Fläche der Kupferplatte angeordnet ist, um den Temperaturverlauf während des Gießvorgangs beobachten zu können. Damit können Risse im Gießstrang bereits während der Produktion desselben erkannt werden. Ähnliche Lösungen offenbaren die WO 2009/149680 A1 , die CN 101985166 B und die JP 2008073748A .A continuous casting mold of the generic type is for example in the US 9 709 515 B2 described. A uniformly arranged hole pattern is worked into the copper plates of the mold, a large number of temperature measuring elements being arranged uniformly distributed over the surface of the copper plate in order to be able to observe the temperature profile during the casting process. This enables cracks in the cast strand to be recognized during production. Similar solutions reveal that WO 2009/149680 A1 , the CN 101985166 B and the JP 2008073748A ,

Bei den vorbekannten Lösungen ergibt sich nachteilig häufig folgender Umstand: In einem gewissen Durchmesserbereich um das Temperaturmesselement herum kann eine hinreichend genaue Temperaturüberwachung stattfinden. Allerdings kommt es teilweise zu keiner hinreichenden Überlappung, sodass ein blinder Bereich entsteht, der nicht ausreichend überwacht werden kann. So ergibt sich beispielsweise ein Erfassungsbereich für Längsrisse, der die Temperatur innerhalb eines Abstands von 50 mm um das Temperaturmesselement messen kann. Sind die Temperaturmesselemente 200 mm voneinander beanstandet (was im Stand der Technik typischerweise vorgesehen ist), ergibt sich zwischen zwei Messelementen ein blinder Bereich von 100 mm.The disadvantage of the previously known solutions frequently arises as follows: A sufficiently precise temperature monitoring can take place in a certain diameter range around the temperature measuring element. However, there is sometimes insufficient overlap, which creates a blind area that cannot be adequately monitored. For example, there is a detection area for longitudinal cracks, which can measure the temperature within a distance of 50 mm around the temperature measuring element. If the temperature measuring elements are 200 mm apart (which is typically provided in the prior art), a blind area of 100 mm results between two measuring elements.

Somit ergibt sich nachteilig, dass bei vorbekannten Lösungen häufig Längsrisse messtechnisch nicht hinreichend erfasst werden können.This results in the disadvantage that longitudinal cracks often cannot be adequately measured in the case of previously known solutions.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Stranggießkokille so fortzubilden, dass es möglich wird, Produktionsdefekte in einem frühen Stadium verbessert erkennen zu können. Dabei soll allerdings der Aufwand nicht übermäßig hoch getrieben werden müssen, insbesondere was die Versorgung mit Temperaturmesselementen anbelangt.The object of the invention is to develop a continuous casting mold of the generic type in such a way that it becomes possible to better identify production defects at an early stage. However, the effort should not be excessive, especially as far as the supply of temperature measuring elements is concerned.

Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass in einem sich in Horizontalrichtung erstreckenden Mittenbereich der Kupferplatten die Temperaturmesselemente in einem ersten horizontalen Abstand angeordnet sind und dass in den sich an den Mittenbereich anschließenden und sich in Horizontalrichtung erstreckenden Seitenbereichen der Kupferplatten die Temperaturmesselemente in einem zweiten horizontalen Abstand angeordnet sind, wobei der erste horizontale Abstand kleiner ist als der zweite horizontale Abstand.The solution to this problem by the invention is characterized in that the temperature measuring elements are arranged at a first horizontal distance in a horizontally extending central region of the copper plates and that in the lateral regions of the copper plates which adjoin the central region and extend in the horizontal direction, the temperature measuring elements in a second horizontal distance are arranged, wherein the first horizontal distance is smaller than the second horizontal distance.

Dabei erstreckt sich der Mittenbereich vorzugsweise über eine horizontale Erstreckung von mindestens 200 mm, besonders bevorzugt über mindestens 300 mm.The central region preferably extends over a horizontal extent of at least 200 mm, particularly preferably over at least 300 mm.

Der erste horizontale Abstand ist vorzugsweise kleiner als 100 mm ist, besonders bevorzugt kleiner als 80 mm. Indes ist der zweite horizontale Abstand vorzugsweise größer als 100 mm, besonders bevorzugt größer als 120 mm.The first horizontal distance is preferably less than 100 mm, particularly preferably less than 80 mm. However, the second horizontal distance is preferably greater than 100 mm, particularly preferably greater than 120 mm.

Im Mittenbereich sind bevorzugt mindestens vier Temperaturmesselemente in vertikale Richtung übereinander angeordnet.In the central region, at least four temperature measuring elements are preferably arranged one above the other in the vertical direction.

In den Seitenbereichen sind hingegen in vertikale Richtung übereinander bevorzugt weniger Temperaturmesselemente angeordnet als im Mittenbereich. Insbesondere können in den Seitenbereichen in vertikale Richtung übereinander zwei Temperaturmesselemente angeordnet sein.In contrast, fewer temperature measuring elements are preferably arranged one above the other in the side regions in the vertical direction than in the central region. In particular, two temperature measuring elements can be arranged one above the other in the vertical vertical direction.

In einem zentralen Abschnitt des Mittenbereichs können die Temperaturmesselemente in Horizontalrichtung auch enger angeordnet sein als in den Endabschnitten des Mittenbereichs.In a central section of the central area, the temperature measuring elements can also be arranged closer in the horizontal direction than in the end sections of the central area.

Die Temperaturmesselemente sind bevorzugt Bestandteil eines Glasfaserkabels.The temperature measuring elements are preferably part of a glass fiber cable.

Die Temperaturmesselemente können im Bereich von Fixierungsbolzen für die Kupferplatte angeordnet sein.The temperature measuring elements can be arranged in the area of fixing bolts for the copper plate.

Der erfindungsgemäße Vorschlag stellt also darauf ab, die Kokillen-Breitseite insbesondere einer Brammen- oder Dünnbrammen-Stranggießkokille mit einer variablen Messstellendichte zu versehen, um eine verbesserte Längsrisserkennung zu ermöglichen.The proposal according to the invention is therefore based on providing the mold broadside, in particular a slab or thin slab continuous casting mold, with a variable measuring point density in order to enable improved longitudinal crack detection.

Dabei ist eine gezielte Erhöhung der Messstellendichte in horizontale Richtung in der Kupferplatte in speziellen Bereichen vorgesehen, namentlich im Mittenbereich der Kupferplatte, wodurch sich überraschenderweise ergeben hat, dass Längsrisse hierdurch sehr viel einfacher und zuverlässiger erkannt werden können.A targeted increase in the measuring point density in the horizontal direction is provided in the copper plate in special areas, especially in the middle area of the copper plate, which surprisingly has shown that longitudinal cracks can be detected much more simply and reliably as a result.

Für die Realisierung der Temperaturmesselemente können Thermoelemente oder Lichtwellenleiter in die Kupferplatten der Kokille integriert werden, wodurch die Temperaturerfassung in einzelnen vertikalen Messebenen erfolgen kann.To implement the temperature measuring elements, thermocouples or optical fibers can be integrated into the copper plates of the mold, which means that the temperature can be recorded in individual vertical measuring levels.

Mit der gezielten Erhöhung der Messstellendichte in speziellen Bereichen der Kupferplatten kann eine verbesserte Früherkennung von Produktdefekten erfolgen.With the targeted increase of the measuring point density in special areas of the copper plates, an improved early detection of product defects can take place.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
eine Kupferplatte einer Stranggießkokille in der Seitenansicht,
Fig. 2
die Draufsicht auf eine Stranggießkokille und
Fig. 3
einen Ausschnitt aus einer Kupferplatte mit Temperaturmesselementen und einem gegossenen Gießstrang in einem Mittenbereich der Kupferplatte.
In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1
a copper plate of a continuous casting mold in side view,
Fig. 2
the top view of a continuous casting mold and
Fig. 3
a section of a copper plate with temperature measuring elements and a cast casting strand in a central region of the copper plate.

In den Figuren 1 und 2 ist eine Stranggießkokille 1 (Figur 2) bzw. eine Kupferplatte 4, 5 derselben (Figur 1) dargestellt. Seitenwände 2 und 3 der Kokille 1 werden jeweils durch eine Kupferplatte 4 bzw. 5 gebildet. Der Gießstrang 6 wird zwischen den beiden Kupferplatten 4, 5 ausgebildet. Für die Befestigung der Kupferplatten 4, 5 sind Fixierungsbolzen 8 vorgesehen; die Fixierungsbolzen 8 befinden sich in einem Abstand P in der Kupferplatte. Die Kupferplatten 4, 5 werden jeweils durch einen Stützrahmen 13 für die Kokillen-Breitseite gestützt. Jede Kupferplatte 4, 5 hat eine Gesamtbreite Wcu und eine Höhe H.In the Figures 1 and 2 is a continuous casting mold 1 ( Figure 2 ) or a copper plate 4, 5 of the same ( Figure 1 ). Side walls 2 and 3 of the mold 1 are each formed by a copper plate 4 and 5, respectively. The casting strand 6 is formed between the two copper plates 4, 5. Fixing bolts 8 are provided for fastening the copper plates 4, 5; the fixing bolts 8 are at a distance P in the copper plate. The copper plates 4, 5 are each supported by a support frame 13 for the mold broadside. Each copper plate 4, 5 has an overall width Wcu and a height H.

In die Kupferplatten 4, 5 sind Temperaturmesselemente 7 eingebaut, wie es am besten aus Figur 3 ersichtlich ist. Hier sind drei Temperaturmesselemente 7 dargestellt, die in horizontale Richtung Ho benachbart zueinander angeordnet sind.In the copper plates 4, 5, temperature measuring elements 7 are installed, as is best known Figure 3 can be seen. Three temperature measuring elements 7 are shown here, which are arranged adjacent to one another in the horizontal direction Ho.

Aus Figur 3 ist auch ersichtlich, wie der Gießstrang gebildet wird. Dargestellt ist eine Strangschale 9, die an der Kupferplatte 4, 5 anliegt; im Inneren des Gießstrangs befindet sich Flüssigstahl 10. Die jeweils aktuelle Temperatur TC1, TC2, TC3 wird an jeweiligen Temperaturmessstellen 12 aufgenommen.Out Figure 3 it can also be seen how the casting strand is formed. A strand shell 9 is shown, which bears against the copper plate 4, 5; Liquid steel 10 is located in the interior of the casting strand. The respective current temperature TC 1 , TC 2 , TC 3 is recorded at respective temperature measuring points 12.

Dargestellt ist auch ein Riss 11 in der Strangschale, den es durch Überwachung der Temperaturen der Temperaturmesselemente zu erfassen gilt.A crack 11 in the strand shell is also shown, which is to be detected by monitoring the temperatures of the temperature measuring elements.

Ein Längsriss 11 im Gießstrang kann bzw. muss angenommen werden, wenn im Mittenbereich M in mehreren (z. B. vier) vertikal übereinander angeordneten Messstellen die vom Temperaturmesselement 7 gemessene Temperatur kleiner ist als in den beiden benachbarten Bereichen.A longitudinal crack 11 in the cast strand can or must be assumed if the temperature measured by the temperature measuring element 7 is lower in several (e.g. four) measuring points in the central area M than in the two adjacent areas.

Hierzu wird auf Figur 3 Bezug genommen, wo die Temperaturen TC1, TC2 und TC3 von drei in horizontale Richtung benachbarten Temperaturmesselementen 7 angegeben ist.To do this, click on Figure 3 Reference is made to where the temperatures TC 1 , TC 2 and TC 3 of three temperature measuring elements 7 adjacent in the horizontal direction are indicated.

Liegt die Temperatur TC2, die in mehreren vertikal übereinander angeordneten Messstellen ermittelt wird, unterhalb den korrespondierenden Temperaturen TC1 und TC3, muss am Ort der TC2-Messstelle von einem Längsriss im Gießstrang ausgegangen werden.If the temperature TC 2 , which is determined in several measuring points arranged vertically one above the other, lies below the corresponding temperatures TC 1 and TC 3 , a longitudinal crack in the casting strand must be assumed at the location of the TC 2 measuring point.

Um Längsrisse verbessert erkennen zu können, ist vorgesehen, dass in einem sich in Horizontalrichtung Ho erstreckenden Mittenbereich M der Kupferplatten 4, 5 die Temperaturmesselemente 7 in einem ersten horizontalen Abstand dh1 angeordnet sind, während in den sich an den Mittenbereich M anschließenden und sich in Horizontalrichtung Ho erstreckenden Seitenbereichen S der Kupferplatten 4, 5 die Temperaturmesselemente 7 in einem zweiten horizontalen Abstand dh2 angeordnet sind; der erste horizontale Abstand dh1 ist dabei kleiner als der zweite horizontale Abstand dh2.In order to be able to recognize longitudinal cracks in an improved manner, it is provided that in a central region M of the copper plates 4, 5 extending in the horizontal direction Ho, the temperature measuring elements 7 are arranged at a first horizontal distance d h1 , while those in the central region M which follow and in which Horizontal direction Ho extending side areas S of the copper plates 4, 5, the temperature measuring elements 7 are arranged at a second horizontal distance d h2 ; the first horizontal distance d h1 is smaller than the second horizontal distance d h2 .

Dabei ist beim Ausführungsbeispiel weiter vorgesehen, dass im Mittenbereich M in Vertikalrichtung V vier Reihen Temperaturmesselemente 7 übereinander angeordnet sind, während in den Seitenbereichen S nur zwei Reihen Temperaturmesselemente 7 vertikal übereinander angeordnet sind.It is further provided in the exemplary embodiment that four rows of temperature measuring elements 7 are arranged one above the other in the central area M in the vertical direction V, while only two rows of temperature measuring elements 7 are arranged vertically one above the other in the side areas S.

Bei Bedarf können auch in den Zwischenräumen zwischen zwei Temperaturmesselementen weitere Temperaturmesselemente angeordnet sein.If required, further temperature measuring elements can also be arranged in the spaces between two temperature measuring elements.

Im Ausführungsbeispiel ist weiterhin zu erkennen, dass in einem zentralen Abschnitt des Mittenbereichs M die Temperaturmesselemente 7 noch enger beieinander angeordnet sind als in den Randbereichen des Mittenbereichs; noch weiter beanstandet sind dann die Temperaturmesselemente 7 in den Seitenbereichen S.In the exemplary embodiment it can also be seen that in a central section of the central area M the temperature measuring elements 7 are arranged even closer together than in the edge areas of the central area; The temperature measuring elements 7 in the side areas S are then further objected to.

Auf diese Weise kann die Überwachung der Rissbildung verbessert erfolgen.In this way, the crack formation can be monitored better.

Bezugszeichenliste:Reference symbol list:

11
StranggießkokilleContinuous casting mold
22
SeitenwandSide wall
33
SeitenwandSide wall
44
KupferplatteCopper plate
55
KupferplatteCopper plate
66
GießstrangCasting strand
77
TemperaturmesselementTemperature measuring element
88th
FixierungsbolzenFixing bolt
99
StrangschaleStrand shell
1010
FlüssigstahlLiquid steel
1111
Riss in der StrangschaleCrack in the strand shell
1212th
TemperaturmessstelleTemperature measuring point
1313
Stützrahmen für die Kokillen-BreitseiteSupport frame for the mold broadside
HoHo
HorizontalrichtungHorizontal direction
VV
VertikalrichtungVertical direction
MM
Mittenbereich der KupferplatteMiddle area of the copper plate
SS
Seitenbereich der KupferplatteSide area of the copper plate
dh i.e.
horizontaler Abstand der Temperaturmesselementehorizontal distance of the temperature measuring elements
dh1 d h1
erster horizontaler Abstandfirst horizontal distance
dh2 d h2
zweiter horizontaler Abstandsecond horizontal distance
PP
Abstand der Fixierungsbolzen der KupferplatteDistance between the fixing bolts of the copper plate
WcuToilet
Gesamtbreite der KupferplatteOverall width of the copper plate
HH
Höhe der StranggießkokilleHeight of the continuous casting mold

Claims (10)

Stranggießkokille (1), umfassend zwei benachbart zueinander angeordnete Seitenwände (2, 3), die durch jeweils mindestens eine Kupferplatte (4, 5) gebildet werden, wobei in den Kupferplatten (4, 5) zur Überwachung der Bildung von Längsrissen im Gießstrang (6) eine Anzahl an Temperaturmesselementen (7) eingebaut sind, die in Horizontalrichtung (Ho) voneinander beabstandet sind,
dadurch gekennzeichnet,
dass in einem sich in Horizontalrichtung (Ho) erstreckenden Mittenbereich (M) der Kupferplatten (4, 5) die Temperaturmesselemente (7) in einem ersten horizontalen Abstand (dh1) angeordnet sind und
dass in den sich an den Mittenbereich (M) anschließenden und sich in Horizontalrichtung (Ho) erstreckenden Seitenbereichen (S) der Kupferplatten (4, 5) die Temperaturmesselemente (7) in einem zweiten horizontalen Abstand (dh2) angeordnet sind,
wobei der erste horizontale Abstand (dh1) kleiner ist als der zweite horizontale Abstand (dh2).Continuous casting mold (1), comprising two side walls (2, 3) arranged adjacent to one another, each of which is formed by at least one copper plate (4, 5), the copper plates (4, 5) being used to monitor the formation of longitudinal cracks in the casting strand (6 ) a number of temperature measuring elements (7) are installed, which are spaced apart in the horizontal direction (Ho),
characterized,
that the temperature measuring elements (7) are arranged at a first horizontal distance (d h1 ) in a central region (M) of the copper plates (4, 5) extending in the horizontal direction (Ho) and
that the temperature measuring elements (7) are arranged at a second horizontal distance (d h2 ) in the side regions (S) of the copper plates (4, 5) adjoining the central region (M) and extending in the horizontal direction (Ho),
wherein the first horizontal distance (d h1 ) is smaller than the second horizontal distance (d h2 ). Stranggießkokille nach Anspruch 1, dadurch gekennzeichnet, dass sich der Mittenbereich (M) über eine horizontale Erstreckung von mindestens 200 mm erstreckt, vorzugsweise über mindestens 300 mm, besonders bevorzugt über mindestens 500 mm.Continuous casting mold according to claim 1, characterized in that the central region (M) extends over a horizontal extent of at least 200 mm, preferably over at least 300 mm, particularly preferably over at least 500 mm. Stranggießkokille nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der erste horizontale Abstand (dh1) kleiner als 100 mm ist, vorzugsweise kleiner als 80 mm.Continuous casting mold according to claim 1 or 2, characterized in that the first horizontal distance (d h1 ) is less than 100 mm, preferably less than 80 mm. Stranggießkokille nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass der zweite horizontale Abstand (dh2) größer als 100 mm ist, vorzugsweise größer als 120 mm.Continuous casting mold according to one of claims 1 to 2, characterized in that the second horizontal distance (d h2 ) is greater than 100 mm, preferably greater than 120 mm. Stranggießkokille nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass im Mittenbereich (M) mindestens vier Temperaturmesselemente (7) in vertikale Richtung (V) übereinander angeordnet sind.Continuous casting mold according to one of claims 1 to 4, characterized in that at least four temperature measuring elements (7) are arranged one above the other in the vertical direction (V) in the central region (M). Stranggießkokille nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass in den Seitenbereichen (S) in vertikale Richtung (V) übereinander weniger Temperaturmesselemente (7) angeordnet sind als im Mittenbereich (M).Continuous casting mold according to one of claims 1 to 5, characterized in that fewer temperature measuring elements (7) are arranged one above the other in the side regions (S) in the vertical direction (V) than in the center region (M). Stranggießkokille nach Anspruch 6, dadurch gekennzeichnet, dass in den Seitenbereichen (S) in vertikale Richtung (V) übereinander zwei Temperaturmesselemente (7) angeordnet sind.Continuous casting mold according to claim 6, characterized in that two temperature measuring elements (7) are arranged one above the other in the side regions (S) in the vertical direction (V). Stranggießkokille nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass in einem zentralen Abschnitt des Mittenbereichs (M) die Temperaturmesselemente (7) in Horizontalrichtung (Ho) enger angeordnet sind als in den Endabschnitten des Mittenbereichs (M).Continuous casting mold according to one of claims 1 to 7, characterized in that in a central section of the central region (M) the temperature measuring elements (7) are arranged narrower in the horizontal direction (Ho) than in the end sections of the central region (M). Stranggießkokille nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Temperaturmesselemente (7) Bestandteil eines Glasfaserkabels sind.Continuous casting mold according to one of claims 1 to 8, characterized in that the temperature measuring elements (7) are part of a glass fiber cable. Stranggießkokille nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Temperaturmesselemente (7) im Bereich von Fixierungsbolzen (8) für die Kupferplatte (4, 5) angeordnet sind.Continuous casting mold according to one of claims 1 to 9, characterized in that the temperature measuring elements (7) are arranged in the region of fixing bolts (8) for the copper plate (4, 5).
EP19192066.9A 2018-08-27 2019-08-16 Wide end of a continuous casting mould with variable measuring position density for improved longitudinal tear detection Active EP3616807B1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004082869A1 (en) * 2003-03-22 2004-09-30 Sms Demag Aktiengesellschaft Method for determining a measured temperature in continuous casting moulds and said continuous casting mould
JP2008073748A (en) 2006-09-25 2008-04-03 Kobe Steel Ltd Method for detecting longitudinal cracking based on thermal flux of mold, and continuous casting method
WO2009149680A1 (en) 2008-06-13 2009-12-17 Sms Siemag Aktiengesellschaft Process for predicting the emergence of longitudinal cracks during continuous casting
CN101985166A (en) 2009-07-29 2011-03-16 宝山钢铁股份有限公司 Continuous casting slab longitudinal-crack steel leakage prediction method
KR20160037527A (en) * 2014-09-29 2016-04-06 주식회사 포스코 Casting apparatus and visualization method for meniscus
US9709515B2 (en) 2010-09-29 2017-07-18 Hyundai Steel Company Device and method for diagnosing cracks in a solidified shell in a mold
EP3222370A1 (en) * 2014-11-19 2017-09-27 Posco Meniscus flow control device and meniscus flow control method using same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004082869A1 (en) * 2003-03-22 2004-09-30 Sms Demag Aktiengesellschaft Method for determining a measured temperature in continuous casting moulds and said continuous casting mould
JP2008073748A (en) 2006-09-25 2008-04-03 Kobe Steel Ltd Method for detecting longitudinal cracking based on thermal flux of mold, and continuous casting method
WO2009149680A1 (en) 2008-06-13 2009-12-17 Sms Siemag Aktiengesellschaft Process for predicting the emergence of longitudinal cracks during continuous casting
CN101985166A (en) 2009-07-29 2011-03-16 宝山钢铁股份有限公司 Continuous casting slab longitudinal-crack steel leakage prediction method
US9709515B2 (en) 2010-09-29 2017-07-18 Hyundai Steel Company Device and method for diagnosing cracks in a solidified shell in a mold
KR20160037527A (en) * 2014-09-29 2016-04-06 주식회사 포스코 Casting apparatus and visualization method for meniscus
EP3222370A1 (en) * 2014-11-19 2017-09-27 Posco Meniscus flow control device and meniscus flow control method using same

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