EP3616807B1 - 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
EP3616807B1
EP3616807B1 EP19192066.9A EP19192066A EP3616807B1 EP 3616807 B1 EP3616807 B1 EP 3616807B1 EP 19192066 A EP19192066 A EP 19192066A EP 3616807 B1 EP3616807 B1 EP 3616807B1
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EP
European Patent Office
Prior art keywords
temperature measuring
continuous casting
measuring elements
casting mould
mould according
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EP19192066.9A
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German (de)
French (fr)
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EP3616807A1 (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, with a number of temperature measuring elements being installed in the copper plates for monitoring the formation of longitudinal cracks in the cast strand, which are spaced apart from one another in the horizontal direction a horizontally extending central area of the copper plates, the temperature measuring elements are arranged at a first horizontal distance and wherein in the side areas of the copper plates adjoining the central area and extending in the horizontal direction, the temperature measuring elements are arranged at a second horizontal distance.
  • a continuous casting mold of the generic type is for example in the KR 2016 0037527 A described; shows a similar solution EP 3 222 370 A1 and the US 9 709 515 B2 .
  • a uniformly arranged hole pattern is worked into the copper plates of the mold, with a large number of temperature measuring elements being arranged evenly distributed over the surface of the copper plate in order to be able to observe the temperature profile during the casting process. This means that cracks in the cast strand can already be detected during its production.
  • Similar solutions reveal the WO 2009/149680 A1 , the CN 101985166 B , the JP 2008073748 A and the WO 2004/082869 A1 .
  • the invention is based on the object of developing a generic continuous casting mold in such a way that it is possible to identify production defects in an improved manner at an early stage. In doing so, however, the effort should not have to be driven excessively high, in particular with regard to the supply of temperature measuring elements.
  • the solution to this object by the invention is characterized in that the temperature measuring elements are arranged at a first horizontal distance in a central area of the copper plates extending in the horizontal direction and that in the side areas of the copper plates that adjoin the central area and extend in the horizontal direction the temperature measuring elements are a second horizontal distance are arranged, wherein the first horizontal distance is smaller than the second horizontal distance and that in a central section of the central area, the temperature measuring elements are arranged closer in the horizontal direction than in the end sections of the central area.
  • the central area 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. Meanwhile, 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 vertical direction in the side areas than in the central area.
  • two temperature measuring elements can be arranged one above the other in the vertical direction in the side areas.
  • the temperature measuring elements are preferably part of a fiber optic 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 broad side of the mold, in particular of 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 in the copper plate is provided in special areas, namely in the central area of the copper plate, which surprisingly has shown that longitudinal cracks can be identified much more easily and reliably.
  • thermocouples or optical fibers can be integrated into the copper plates of the mold, so that the temperature can be recorded in individual vertical measuring levels.
  • FIG. 1 and 2 is a continuous casting mold 1 ( Figure 2 ) or a copper plate 4, 5 of the same ( Figure 1 ) shown. Side walls 2 and 3 of the mold 1 are each formed by a copper plate 4 and 5, respectively. The cast 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 broad side of the mold. Each copper plate 4, 5 has a total width Wcu and a height H.
  • Temperature measuring elements 7 are built into the copper plates 4, 5, as best seen Figure 3 can be seen. Here three temperature measuring elements 7 are shown, which are arranged adjacent to one another in the horizontal direction Ho.
  • FIG. 3 it can also be seen how the cast strand is formed.
  • a strand shell 9 is shown, which rests against the copper plate 4, 5; Liquid steel 10 is located inside the cast strand.
  • the current temperature TC 1 , TC 2 , TC 3 is recorded at the respective temperature measuring points 12.
  • a crack 11 in the strand shell 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 than in the two adjacent areas in several (e.g. four) measuring points arranged vertically one above the other in the central area M.
  • the temperature measuring elements 7 are arranged at a first horizontal distance d h1 , while in the areas adjoining the central area M and in 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 to one another in a central section of the central region M than in the edge regions of the central region; The temperature measuring elements 7 in the side areas S.

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

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, wobei in einem sich in Horizontalrichtung erstreckenden Mittenbereich der Kupferplatten die Temperaturmesselemente in einem ersten horizontalen Abstand angeordnet sind und wobei in den sich an den Mittenbereich anschließenden und sich in Horizontalrichtung erstreckenden Seitenbereichen der Kupferplatten die Temperaturmesselemente in einem zweiten horizontalen Abstand angeordnet 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, with a number of temperature measuring elements being installed in the copper plates for monitoring the formation of longitudinal cracks in the cast strand, which are spaced apart from one another in the horizontal direction a horizontally extending central area of the copper plates, the temperature measuring elements are arranged at a first horizontal distance and wherein in the side areas of the copper plates adjoining the central area and extending in the horizontal direction, the temperature measuring elements are arranged at a second horizontal distance.

Eine Stranggießkokille der gattungsgemäßen Art ist beispielsweise in der KR 2016 0037527 A beschrieben; eine ähnliche Lösung zeigt die EP 3 222 370 A1 und die US 9 709 515 B2 . 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 , die JP 2008073748 A und die WO 2004/082869 A1 .A continuous casting mold of the generic type is for example in the KR 2016 0037527 A described; shows a similar solution EP 3 222 370 A1 and the US 9 709 515 B2 . A uniformly arranged hole pattern is worked into the copper plates of the mold, with a large number of temperature measuring elements being arranged evenly distributed over the surface of the copper plate in order to be able to observe the temperature profile during the casting process. This means that cracks in the cast strand can already be detected during its production. Similar solutions reveal the WO 2009/149680 A1 , the CN 101985166 B , the JP 2008073748 A and the WO 2004/082869 A1 .

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 often results in the following circumstance: Sufficiently precise temperature monitoring can take place in a certain diameter range around the temperature measuring element. However, there is sometimes insufficient overlap, so that a blind area is created, which cannot be adequately monitored. For example, this results in a detection area for longitudinal cracks that can measure the temperature within a distance of 50 mm from the temperature measuring element. If the temperature measuring elements are spaced 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 has the disadvantage that in the case of previously known solutions, longitudinal cracks often cannot be adequately detected by measurement.

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 invention is based on the object of developing a generic continuous casting mold in such a way that it is possible to identify production defects in an improved manner at an early stage. In doing so, however, the effort should not have to be driven excessively high, in particular with regard to the supply of temperature measuring elements.

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 und dass in einem zentralen Abschnitt des Mittenbereichs die Temperaturmesselemente in Horizontalrichtung enger angeordnet sind als in den Endabschnitten des Mittenbereichs.The solution to this object by the invention is characterized in that the temperature measuring elements are arranged at a first horizontal distance in a central area of the copper plates extending in the horizontal direction and that in the side areas of the copper plates that adjoin the central area and extend in the horizontal direction the temperature measuring elements are a second horizontal distance are arranged, wherein the first horizontal distance is smaller than the second horizontal distance and that in a central section of the central area, the temperature measuring elements are arranged closer in the horizontal direction than in the end sections of the central area.

Dabei erstreckt sich der Mittenbereich vorzugsweise über eine horizontale Erstreckung von mindestens 200 mm, besonders bevorzugt über mindestens 300 mm.The central area 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. Meanwhile, 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 area, 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 vertical direction in the side areas than in the central area. In particular, two temperature measuring elements can be arranged one above the other in the vertical direction in the side areas.

Die Temperaturmesselemente sind bevorzugt Bestandteil eines Glasfaserkabels.The temperature measuring elements are preferably part of a fiber optic 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 broad side of the mold, in particular of 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 in the copper plate is provided in special areas, namely in the central area of the copper plate, which surprisingly has shown that longitudinal cracks can be identified much more easily and reliably.

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, so 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 in the density of measuring points in special areas of the copper plates, improved early detection of product defects can be achieved.

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.
An exemplary embodiment of the invention is shown in the drawing. Show it:
Fig. 1
a copper plate of a continuous casting mold in a 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 strand in a central area 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 ) shown. Side walls 2 and 3 of the mold 1 are each formed by a copper plate 4 and 5, respectively. The cast 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 broad side of the mold. Each copper plate 4, 5 has a total 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.Temperature measuring elements 7 are built into the copper plates 4, 5, as best seen Figure 3 can be seen. Here three temperature measuring elements 7 are shown, 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 cast strand is formed. A strand shell 9 is shown, which rests against the copper plate 4, 5; Liquid steel 10 is located inside the cast strand. The current temperature TC 1 , TC 2 , TC 3 is recorded at the 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.Also shown is a crack 11 in the strand shell, 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 than in the two adjacent areas in several (e.g. four) measuring points arranged vertically one above the other in the central area M.

Hierzu wird auf Figur 3 Bezug genommen, wo die Temperaturen TC1, TC2 und TC3 von drei in horizontale Richtung benachbarten Temperaturmesselementen 7 angegeben ist.This is done on Figure 3 Reference is made 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, is below the corresponding temperatures TC 1 and TC 3 , a longitudinal crack in the cast 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 better recognize longitudinal cracks, it is provided that in a central area 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 in the areas adjoining the central area M and in 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 vertical direction V, while in the side areas S only two rows of temperature measuring elements 7 are arranged vertically one above the other.

Bei Bedarf können auch in den Zwischenräumen zwischen zwei Temperaturmesselementen weitere Temperaturmesselemente angeordnet sein.If necessary, 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 the temperature measuring elements 7 are arranged even closer to one another in a central section of the central region M than in the edge regions of the central region; The temperature measuring elements 7 in the side areas S.

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

Bezugszeichenliste:List of reference symbols:

11
StranggießkokilleContinuous casting mold
22
SeitenwandSide wall
33
SeitenwandSide wall
44th
KupferplatteCopper plate
55
KupferplatteCopper plate
66
GießstrangCast strand
77th
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 broad side of the mold
HoHo
HorizontalrichtungHorizontal direction
VV
VertikalrichtungVertical direction
MM.
Mittenbereich der KupferplatteCentral area of the copper plate
SS.
Seitenbereich der KupferplatteSide area of the copper plate
dh i.e.
horizontaler Abstand der Temperaturmesselementehorizontal distance between 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
WcuWcu
Gesamtbreite der KupferplatteTotal width of the copper plate
HH
Höhe der StranggießkokilleHeight of the continuous casting mold

Claims (9)

  1. Continuous casting mould (1), comprising two side walls (2, 3), which are arranged adjacent to one another and which are each formed by at least one copper plate (4, 5), wherein incorporated in the copper plates (4, 5) for monitoring formation of longitudinal tears in the cast strip (6) is a number of temperature measuring elements (7) spaced from one another in horizontal direction (Ho), wherein the temperature measuring elements (7) are arranged at a first horizontal spacing (dh1) in a centre region (M), which extends in horizontal direction (Ho), of the copper plates (4, 5) and wherein the temperature measuring elements (7) are arranged at a second horizontal spacing (dh2) in side regions (S), which adjoin the centre region (M) and extend in horizontal direction (Ho), of the copper plates (4, 5),
    characterised in that
    the first horizontal spacing (dn1) is smaller than the second horizontal spacing (dh2) and the temperature measuring elements (7) are arranged more closely in horizontal direction (Ho) in a central section of the centre region (M) than in the end sections of the centre region (M).
  2. Continuous casting mould according to claim 1, characterised in that the centre region (M) extends over a horizontal length of at least 200 mm.
  3. Continuous casting mould according to claim 1 or 2, characterised in that the first horizontal spacing (dn1) is less than 80 mm.
  4. Continuous casting mould according to one of claims 1 and 2, characterised in that the second horizontal spacing (dn2) is larger than 120 mm.
  5. Continuous casting mould according to any one of claims 1 to 4, characterised in that at least four temperature measuring elements (7) are arranged one above the other in vertical direction (V) in the centre region (M).
  6. Continuous casting mould according to any one of claims 1 to 5, characterised in that fewer temperature measuring elements (7) are arranged one above the other in vertical direction (V) in the side regions (S) than in the centre region (M).
  7. Continuous casting mould according to claim 6, characterised in that two temperature measuring elements (7) are arranged one above the other in vertical direction (V) in the side regions (S).
  8. Continuous casting mould according to any one of claims 1 to 7, characterised in that the temperature measuring elements (7) are part of a glass-fibre cable.
  9. Continuous casting mould according to any one of claims 1 to 8, characterised in that the temperature measuring elements (7) are arranged in the region of fixing pins (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)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018214390.0A DE102018214390A1 (en) 2018-08-27 2018-08-27 Mold broadside of a continuous casting mold with variable measuring point density for improved longitudinal crack detection

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EP3616807A1 EP3616807A1 (en) 2020-03-04
EP3616807B1 true EP3616807B1 (en) 2021-02-17

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EP19192066.9A Active EP3616807B1 (en) 2018-08-27 2019-08-16 Wide end of a continuous casting mould with variable measuring position density for improved longitudinal tear detection

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DE102008028481B4 (en) 2008-06-13 2022-12-08 Sms Group Gmbh Method for predicting the formation of longitudinal cracks in continuous casting
CN101985166B (en) 2009-07-29 2012-04-25 宝山钢铁股份有限公司 Method for forecasting longitudinal crack and breakout of continuous casting slab
CN103209784B (en) 2010-09-29 2015-09-09 现代制铁株式会社 The Cracks Diagnosis devices and methods therefor of solidified shell in casting mold
KR20160037527A (en) * 2014-09-29 2016-04-06 주식회사 포스코 Casting apparatus and visualization method for meniscus
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