EP1128919B1 - Mould plate of a continuous casting plant - Google Patents
Mould plate of a continuous casting plant Download PDFInfo
- Publication number
- EP1128919B1 EP1128919B1 EP99972136A EP99972136A EP1128919B1 EP 1128919 B1 EP1128919 B1 EP 1128919B1 EP 99972136 A EP99972136 A EP 99972136A EP 99972136 A EP99972136 A EP 99972136A EP 1128919 B1 EP1128919 B1 EP 1128919B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- mould plate
- chill mould
- cooling
- plate according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 42
- 229910052759 nickel Inorganic materials 0.000 claims description 22
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 48
- 238000000576 coating method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
Definitions
- the present invention relates to a mold plate made of copper for a mold Continuous caster, with a molten metal in operation of the continuous caster or a (partially) solidified metal strand facing work surface and at least a cooling surface contacting a cooling medium during operation of the continuous casting installation, wherein the mold plate has a thermal conductivity and is in a Casting direction extends over a mold length.
- Such a mold plate is known for example from EP 0 149 734 B1.
- the Mold plates have a lower thermal conductivity in the upper area and a greater heat resistance than in the lower area.
- the temperature of the Work surface are within a predetermined range.
- the thickness must also the mold plate are within a permissible thickness range that is greater than is a minimum thickness required for mechanical reasons.
- the object of the present invention is to provide a mold plate Generic type in such a way that they more often than previously possible can be reworked if a minimum permissible copper wall thickness has already been reached.
- the object is achieved in that at least in one on the cooling surface Subarea a layer with a thermal conductivity is applied that the layer thermal conductivity the layer is smaller than the thermal conductivity of the mold plate, that the layer consists essentially of nickel and that the layer is one in one Nickel bath is electrolessly applied to the cooling surface layer
- the layer consists essentially of nickel, since the Coefficient of thermal expansion of nickel less than the coefficient of thermal expansion a conventional mold plate made of copper.
- the nickel layer is preferably in a nickel bath with additives without current on the cooling surface of the Mold plate deposited. Because in this case, contour-sharp coatings are the cooling surface possible.
- the layer thickness is very even, and the thermal conductivity of the layer is considerably lower than that of galvanic applied nickel. Regardless of the coating process, the layer thermal conductivity should but a maximum of 10% of the thermal conductivity of the copper Mold plate amount.
- the insulating properties of the layer are even better if the layer is five to five twenty percent from phosphorus and - apart from impurities - consists of nickel. Because in this case the layer thermal conductivity is less than 3% of the thermal conductivity of the copper mold plate.
- the cooling surface can be on a rear side opposite the working surface arranged cooling groove or as opposite to the work surface Back of the closed cooling hole.
- the cooling groove has a bottom surface and side walls.
- the Layer only be applied to the bottom surface and / or also on the side walls.
- the temperature distribution over the mold length can be influenced.
- the layer length is at least 100 mm, preferably between 300 mm and 500 mm. Alternatively, the layer can also extend over the entire length of the mold.
- a continuous casting plant has mold plates 1 made of copper.
- each Mold plate 1 has a working surface 2, which is in a casting direction x extends over a mold length L.
- a molten metal 3 usually a molten steel.
- the molten metal 3 gradually solidifies into a metal strand 4, which in the casting direction x is withdrawn from the mold plates 1.
- the mold plates 1 For the controlled solidification of the molten metal 3 to the metal strand 4, one must considerable amount of heat, the so-called pouring heat, dissipated via the mold plates 1 become.
- the mold plates 1 therefore have according to Figure 2 cooling surfaces 5, which is not shown during operation of the continuous casting mold Cooling medium, e.g. B. water, contact.
- the cooling surfaces 5 are on one Rear 6 arranged, which is opposite the work surface 2. You are for Back 6 open. They are designed as cooling grooves 5.
- the mold plate 1 consists of copper. It therefore has one high thermal conductivity W of, for example, approx. 377 W / mK.
- a layer 7 is therefore to be imprinted on the cooling surfaces 5 applied.
- the layer 7 has a thermal conductivity S, which is considerable is smaller than the thermal conductivity W of the copper plate.
- layer 7 consists essentially of nickel, with a phosphorus content of 5% to 20% added.
- the Phosphorus content between 9% and 14%, e.g. B. at 10% to 12%.
- the thermal conductivity The layer can be reduced even further by using the Nikkelbad Adds up to 30% silicon carbide in addition to the phosphor. Otherwise layer 7 contains only minor impurities.
- the layer 7, as shown schematically in FIG. 3, is preferably thereby applied that the mold plate 1 is placed in a nickel bath 8. There the layer 7 is then applied to the cooling surfaces 5 without current.
- Such Nickel layer 7 has a layer thermal conductivity S which, for example, is only approx. 5 W / mK is.
- the layer 7 has a layer thickness d, which of course depends on the length of stay the mold plate 1 in the nickel bath 8 depends.
- layer thicknesses d between 40 pm and 80 pm, z. B. 60 um, on the cooling surfaces 5 applicable.
- a layer can also be used 7 with a layer thickness d of up to 200 ⁇ m.
- the cooling grooves 5 have bottom surfaces 9 and side walls 10, while 5 webs 11 are arranged between the cooling minutes.
- the layer 7 only to the floor surfaces 9.
- layer 7 on the bottom surfaces 9 and the side walls 10 apply.
- layer 7 over the entire area So both on floor surfaces 9 and 10 side walls 10 of the cooling minutes 5 also on the intermediate webs 11. According to FIG. 2, the two on the left Cooling minutes 5 fully coated, while the two right cooling grooves 5 only the bottom surfaces 9 are coated.
- the layer 7 extends over the entire mold length L extends. This is the case with the outer cooling channels in FIG. 2.
- the Layer length I is preferably between 300 mm and 500 mm, at least but 100 mm. This is the case with the inner cooling channels in FIG. 2.
- the mold plate 1 according to FIG. 4 differs from the mold plate 1 according to Figure 2 in that instead of cooling minutes 5, the back 6 open are cooling bores 5 '.
- the cooling holes 5 ' are connected to the Provide layer 7, again alternatively a complete or only partial Coating over the length of the cooling holes 5 'is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Kokillenplatte aus Kupfer einer Kokille für eine Stranggießanlage, mit einer im Betrieb der Stranggießanlage einer Metallschmelze bzw. einem (teil-)erstarrten Metallstrang zugewandten Arbeitsfläche und mindestens einer im Betrieb der Stranggießanlage ein Kühlmedium kontaktierenden Kühlfläche, wobei die Kokillenplatte eine Wärmeleitfähigkeit aufweist und sich in einer Gießrichtung über eine Kokillenlänge erstreckt.The present invention relates to a mold plate made of copper for a mold Continuous caster, with a molten metal in operation of the continuous caster or a (partially) solidified metal strand facing work surface and at least a cooling surface contacting a cooling medium during operation of the continuous casting installation, wherein the mold plate has a thermal conductivity and is in a Casting direction extends over a mold length.
Eine derartige Kokillenplatte ist beispielsweise aus der EP 0 149 734 B1 bekannt. Die Kokillenplatten weisen im oberen Bereich eine geringere Wärmeleitfähigkeit und eine größere Hitzebeständigkeit auf als im unteren Bereich.Such a mold plate is known for example from EP 0 149 734 B1. The Mold plates have a lower thermal conductivity in the upper area and a greater heat resistance than in the lower area.
Beim Stranggießen von Metall, insbesondere von Stahl, tritt ein hoher Verschleiß an den Kokillenplatten auf. Daher muß die Arbeitsfläche der Kokillenplatte von Zeit zu Zeit nach einer von den Einsatzbedingungen der Kokillenplatte abhängigen Pfannenzahl nachbearbeitet werden. Dabei nimmt die Dicke der Kokillenplatte stetig ab.When metal, especially steel, is continuously cast, wear and tear occurs the mold plates. Therefore, the working surface of the mold plate must be removed from time to time Time after one depending on the conditions of use of the mold plate Number of pans can be reworked. The thickness of the mold plate increases steadily from.
Um qualitativ hochwertige Stahlstränge zu gießen, muß die Temperatur der Arbeitsfläche innerhalb eines vorbestimmten Bereiches liegen. Auch muß die Dicke der Kokillenplatte innerhalb eines zulässigen Dickenbereiches liegen, der größer als eine aus mechanischen Gründen erforderliche Mindestdicke ist.In order to cast high quality steel strands, the temperature of the Work surface are within a predetermined range. The thickness must also the mold plate are within a permissible thickness range that is greater than is a minimum thickness required for mechanical reasons.
Das Aufbringen von Schichten, insbesondere von Nickelschichten, auf Kokillenplatten als solches ist zwar bereits bekannt. Beispielhaft wird. auf die WO 97/12708 und Herrmann: "Handbook on Continuous Casting", Aluminium-Verlag, Düsseldorf 1980, verwiesen. Im Stand der Technik wird eine Nickelschicht jedoch auf die Arbeitsfläche der Kokillenplatte aufgebracht. Sie dient im wesentlichen dazu, den Kokillenverschleiß beim Stranggießen zu verringern. The application of layers, in particular nickel layers, to mold plates as such is already known. As an example. to WO 97/12708 and Herrmann: "Handbook on Continuous Casting", Aluminum Verlag, Düsseldorf 1980, directed. In the prior art, however, a nickel layer is applied to the work surface the mold plate applied. It essentially serves to reduce mold wear decrease in continuous casting.
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Kokillenplatte der gattungsgemäßen Art derart fortzubilden, daß sie öfter als bisher möglich nachbearbeitbar ist, wenn bereits eine minimal zulässige Kupferwanddicke erreicht ist.The object of the present invention is to provide a mold plate Generic type in such a way that they more often than previously possible can be reworked if a minimum permissible copper wall thickness has already been reached.
Die Aufgabe wird dadurch gelöst, daß auf die Kühlfläche zumindest in einem Teilbereich eine Schicht mit einer Wärmeleitfähigkeit aufgebracht ist, daß die Schicht-Wärmeleitfähigkeit der Schicht kleiner als die Wärmeleitfähigkeit der Kokillenplatte ist, daß die Schicht im wesentlichen aus Nickel besteht und daß die Schicht eine in einem Nickelbad stromlos auf die Kühlfläche aufgebrachte Schicht istThe object is achieved in that at least in one on the cooling surface Subarea a layer with a thermal conductivity is applied that the layer thermal conductivity the layer is smaller than the thermal conductivity of the mold plate, that the layer consists essentially of nickel and that the layer is one in one Nickel bath is electrolessly applied to the cooling surface layer
Besonders vorteilhaft ist, daß die Schicht im wesentlichen aus Nickel besteht, da der Wärmeausdehnungskoeffizient von Nickel kleiner als der Wärmeausdehnungskoeffizient einer üblichen Kokillenplatte aus Kupfer ist. Die Nickelschicht wird vorzugsweise in einem Nickelbad mit Zusätzen stromlos auf der Kühlfläche der Kokillenplatte abgeschieden. Denn in diesem Fall sind konturscharfe Beschichtungen der Kühlfläche möglich. Darüber hinaus ist die Schichtdicke sehr gleichmäßig, und die Wärmeleitfähigkeit der Schicht ist erheblich geringer als die von galvanisch aufgebrachtem Nickel. Unabhängig vom Beschichtungsverfahren sollte die Schicht-Wärmeleitfähigkeit aber maximal 10 % der Wärmeleitfähigkeit von dem Kupfer der Kokillenplatte betragen.It is particularly advantageous that the layer consists essentially of nickel, since the Coefficient of thermal expansion of nickel less than the coefficient of thermal expansion a conventional mold plate made of copper. The nickel layer is preferably in a nickel bath with additives without current on the cooling surface of the Mold plate deposited. Because in this case, contour-sharp coatings are the cooling surface possible. In addition, the layer thickness is very even, and the thermal conductivity of the layer is considerably lower than that of galvanic applied nickel. Regardless of the coating process, the layer thermal conductivity should but a maximum of 10% of the thermal conductivity of the copper Mold plate amount.
Die Isoliereigenschaften der Schicht sind noch besser, wenn die Schicht zu fünf bis zwanzig Prozent aus Phosphor und im übrigen - abgesehen von Verunreinigungen - aus Nickel besteht. Denn in diesem Fall beträgt die Schicht-Wärmeleitfähigkeit weniger als 3% der Wärmeleitfähigkeit der Kokillenplatte aus Kupfer.The insulating properties of the layer are even better if the layer is five to five twenty percent from phosphorus and - apart from impurities - consists of nickel. Because in this case the layer thermal conductivity is less than 3% of the thermal conductivity of the copper mold plate.
Die Kühlfläche kann als auf einer der Arbeitsfläche gegenüberliegenden Rückseite angeordnete Kühlnut oder als bezüglich einer der Arbeitsfläche gegenüberliegenden Rückseite geschlossene Kühlbohrung ausgebildet sein.The cooling surface can be on a rear side opposite the working surface arranged cooling groove or as opposite to the work surface Back of the closed cooling hole.
Die Kühlnut weist eine Bodenfläche und Seitenwände auf. Wahlweise kann die Schicht nur auf die Bodenfläche und/oder auch auf die Seitenwände aufgebracht sein. The cooling groove has a bottom surface and side walls. Optionally, the Layer only be applied to the bottom surface and / or also on the side walls.
Wenn die Schicht sich von einem in Gießrichtung gesehen oberen Rand über eine Schichtlänge erstreckt und die Schichtlänge kleiner als die Kokillenlänge ist, kann die Temperaturverteilung über der Kokillenlänge beeinflußt werden. Die Schichtlänge beträgt mindestens 100 mm, vorzugsweise zwischen 300 mm und 500 mm. Alternativ kann sich die Schicht aber auch über die gesamte Kokillenlänge erstrecken.If the layer extends from an upper edge in the casting direction over a Layer length extends and the layer length is less than the mold length, can the temperature distribution over the mold length can be influenced. The layer length is at least 100 mm, preferably between 300 mm and 500 mm. Alternatively, the layer can also extend over the entire length of the mold.
Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit den Zeichnungen. Dabei zeigen in Prinzipdarstellung:
Figur 1- eine Stranggießkokille im Betrieb,
Figur 2- einen Ausschnitt einer Kokillenplatte mit Kühlelementen,
- Figur 3
- ein Beschichtungsverfahren und
- Figur 4
- einen weiteren Kokillenplattenausschnitt mit Kühlbohrungen.
- Figure 1
- a continuous casting mold in operation,
- Figure 2
- a section of a mold plate with cooling elements,
- Figure 3
- a coating process and
- Figure 4
- another mold plate cutout with cooling holes.
Gemäß Figur 1 weist eine Stranggießanlage Kokillenplatten 1 aus Kupfer auf. Jede
Kokillenplatte 1 weist eine Arbeitsfläche 2 auf, die sich in einer Gießrichtung x
über eine Kokillenlänge L erstreckt. Zwischen den Arbeitsflächen 2 befindet sich
im Betrieb der Stranggießanlage eine Metallschmelze 3, in der Regel eine Stahlschmelze.
Die Metallschmelze 3 erstarrt allmählich zu einem Metallstrang 4, der in
der Gießrichtung x aus den Kokillenplatten 1 abgezogen wird.According to FIG. 1, a continuous casting plant has
Zum kontrollierten Erstarren der Metallschmelze 3 zum Metallstrang 4 muß eine
erhebliche Wärmemenge, die sog. Gießhitze, über die Kokillenplatten 1 abgeführt
werden. Zum Abführen der Gießhitze weisen die Kokillenplatten 1 daher gemäß
Figur 2 Kühlflächen 5 auf, die im Betrieb der Stranggießkokille ein nicht dargestelltes
Kühlmedium, z. B. Wasser, kontaktieren. Die Kühlflächen 5 sind auf einer
Rückseite 6 angeordnet, welche der Arbeitsfläche 2 gegenüber liegt. Sie sind zur
Rückseite 6 hin offen. Sie sind also als Kühlnuten 5 ausgebildet.
Die Kokillenplatte 1 besteht, wie bereits erwähnt, aus Kupfer. Sie weist daher eine
hohe Wärmeleitfähigkeit W von bspw. ca. 377 W/mK auf. Um der Kokillenplatte 1
einen größeren Wärmewiderstand bzw. eine geringere Gesamt-Wärmeleitfähigkeit
aufzuprägen, ist daher auf die Kühiflächen 5 eine Schicht 7
aufgebracht. Die Schicht 7 weist eine Wärmeleitfähigkeit S auf, welche erheblich
kleiner als die Wärmeleitfähigkeit W der Kupferplatte ist.For the controlled solidification of the molten metal 3 to the metal strand 4, one must
considerable amount of heat, the so-called pouring heat, dissipated via the
Gemäß Ausführungsbeispiel besteht die Schicht 7 im wesentlichen aus Nickel,
dem ein Phosphor-Anteil von 5 % bis 20 % beigefügt ist. Vorzugsweise liegt der
Phosphor-Anteil zwischen 9 % und 14 %, z. B. bei 10 % bis 12 %. Die Wärmeleitfähigkeit
der Schicht kann noch weiter reduziert werden, indem man dem Nikkelbad
zusätzlich zum Phosphor noch bis zu 30% Siliziumkarbid beigibt. Ansonsten
enthält die Schicht 7 lediglich noch geringfügige Verunreinigungen.According to the exemplary embodiment,
Vorzugsweise wird die Schicht 7, wie schematisch in Figur 3 dargestellt, dadurch
aufgebracht, daß die Kokillenplatte 1 in ein Nickelbad 8 eingebracht wird. Dort
wird die Schicht 7 dann stromlos auf die Kühlflächen 5 aufgebracht. Eine derartige
Nickelschicht 7 weist eine Schicht-Wärmeleitfähigkeit S auf, die bspw. bei nur ca.
5 W/mK liegt.The
Die Schicht 7 weist eine Schichtdicke d auf, die selbstverständlich von der Verweildauer
der Kokillenplatte 1 im Nickelbad 8 abhängt. Mittels üblicher Nickelbäder
8 sind Schichtdicken d zwischen 40 pm und 80 pm, z. B. 60 um, auf die Kühlflächen
5 aufbringbar. In einem Spezial-Nickelbad 8 kann aber auch eine Schicht
7 mit einer Schichtdicke d bis zu 200 um aufgebracht werden.The
Im Prinzip ist es möglich, die Rückseite 6 vollständig zu beschichten. Dies ist
technisch am einfachsten zu realisieren. Es ist aber auch möglich, die Rückseite 6
vor dem Beschichten mit der Schicht 7 mit einer Schutzschicht zu versehen und
nur auf die nicht abgedeckten Stellen die Nickelschicht 7 aufzubringen.In principle, it is possible to completely coat the
Beispielsweise weisen die Kühlnuten 5 Bodenflächen 9 und Seitenwände 10 auf,
während zwischen den Kühinuten 5 Stege 11 angeordnet sind. Es ist beispielsweise
möglich die Schicht 7 nur auf die Bodenflächen 9 aufzubringen. Ebenso ist
es aber auch möglich, die Schicht 7 auf die Bodenflächen 9 und die Seitenwände
10 aufzubringen. Schließlich ist es auch möglich, die Schicht 7 ganzflächig aufzubringen,
also sowohl auf Bodenflächen 9 und Seitenwände 10 der Kühinuten 5 als
auch auf die dazwischenliegenden Stege 11. Gemäß Figur 2 sind die beiden linken
Kühinuten 5 vollflächig beschichtet, während bei den beiden rechten Kühlnuten
5 nur die Bodenflächen 9 beschichtet sind.For example, the
Es ist ferner möglich, daß die Schicht 7 sich über die gesamte Kokillenlänge L
erstreckt. Dies ist bei den äußeren Kühlkanälen in Figur 2 der Fall. Alternativ kann
sich die Schicht 7 auch nur von einem in Gießrichtung x gesehen oberen Rand 12
über eine Schichtlänge I erstrecken, die kleiner als die Kokillenlänge L ist. Die
Schichtlänge I beträgt vorzugsweise zwischen 300 mm und 500 mm, mindestens
aber 100 mm. Dies ist bei den inneren Kühlkanälen in Figur 2 der Fall.It is also possible that the
Die Kokillenplatte 1 gemäß Figur 4 unterscheidet sich von der Kokillenplatte 1
gemäß Figur 2 dadurch, daß sie statt Kühinuten 5, die zur Rückseite 6 hin offen
sind, Kühlbohrungen 5' aufweist. Auch hier sind aber die Kühlbohrungen 5' mit der
Schicht 7 versehen, wobei wieder alternativ eine vollständige oder nur teilweise
Beschichtung über die Länge der Kühlbohrungen 5' möglich ist. The
Bezugszeichenliste
- 1
- Kokillenplatte
- 2
- Arbeitsfläche
- 3
- Metallschmelze
- 4
- Metallstrang
- 5
- Kühlflächen/Kühlnuten
- 5'
- Kühlflächen/Kühlbohrungen
- 6
- Rückseite
- 7
- Schicht
- 8
- Nickelbad
- 9
- Bodenfläche
- 10
- Seitenwände
- 11
- Stege
- 12
- oberer Rand
- d
- Schichtdicke
- I, L
- Längen
- N, S, W
- Leitfähigkeiten
- x
- Gießrichtung
- 1
- mold plate
- 2
- working surface
- 3
- molten metal
- 4
- metal strand
- 5
- Cooling surfaces / cooling grooves
- 5 '
- Cooling surfaces / cooling holes
- 6
- back
- 7
- layer
- 8th
- nickel bath
- 9
- floor area
- 10
- side walls
- 11
- Stege
- 12
- upper edge
- d
- layer thickness
- I, L
- lengths
- N, S, W
- conductivities
- x
- casting
Claims (10)
- Chill mould plate (1) of copper of a chill mould for a continuous casting plant, with a work surface (2) which in operation of the continuous casting plant faces a metal melt (3) or a (partly) hardened metal strip (4) and with at least one cooling surface (5, 5') which in operation of the continuous casting plant contacts a coolant, wherein the chill mould plate has a thermal conductivity (W) and extends in a pouring direction (x) over a chill mould length (L), characterised in that a layer (7) with a layer thermal conductivity (S) is applied to the cooling surface (5, 5') at least in a part region, that the thermal conductivity (S) of the layer (7) is smaller than the thermal conductivity (W) of the chill mould plate (1), that the layer (7) substantially consists of nickel and that the layer (7) is a layer (7) applied to the cooling surface (5, 5') in current-free manner in a nickel bath (8).
- Chill mould plate according to claim 1, characterised in that the layer (7) consists of five to twenty percent of phosphor and the remainder of - apart from minor impurities - nickel.
- Chill mould plate according to claim 1 or 2, characterised in that the layer (7) consists of twenty-five percent phosphor, up to 30 volume percent of silicon carbide and a remainder of - apart from minor impurities - nickel.
- Chill mould plate according to one of the preceding claims 1 to 3, characterised in that the layer (7) has a layer thickness (d) below 200 µm, especially between 40 µm and 80 µm.
- Chill mould plate according to one of the preceding claims 1 to 3, characterised in that the cooling surface (5) is formed as a cooling groove (5), which is arranged on a rear side (6) opposite the work surface (2) and is coated at all sides.
- Chill mould plate according to one of the preceding claims 1 to 4, characterised in that the cooling groove (5) has a base surface (9) and side walls (10) and that the layer (7) is applied only to the base surface (9).
- Chill mould plate according to one of the preceding claims 1 to 4, characterised in that the cooling surface (5') is formed as a cooling bore (5') closed with respect to a rear side (6) opposite one of the work surfaces (2).
- Chill mould plate according to one of the preceding claims 1 to 7, characterised in that the layer (7) extends over a layer length (1) from an upper edge as seen in pouring direction (x) and that the layer length (1) is smaller than the chill mould length (L).
- Chill mould plate according to claim 8, characterised in that the layer length (1) amounts to at least 100 mm, preferably between 300 mm and 500 mm.
- Chill mould plate according to one of claims 1 to 7, characterised in that the layer (7) extends over the entire chill mould length (L).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19852473 | 1998-11-13 | ||
DE19852473A DE19852473C5 (en) | 1998-11-13 | 1998-11-13 | Chill plate of a continuous casting plant |
PCT/EP1999/008442 WO2000029146A1 (en) | 1998-11-13 | 1999-11-04 | Mould plate of a continuous casting plant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1128919A1 EP1128919A1 (en) | 2001-09-05 |
EP1128919B1 true EP1128919B1 (en) | 2002-09-25 |
Family
ID=7887743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99972136A Expired - Lifetime EP1128919B1 (en) | 1998-11-13 | 1999-11-04 | Mould plate of a continuous casting plant |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1128919B1 (en) |
KR (1) | KR100627009B1 (en) |
AT (1) | ATE224782T1 (en) |
CA (1) | CA2351081C (en) |
DE (2) | DE19852473C5 (en) |
ES (1) | ES2185425T3 (en) |
WO (1) | WO2000029146A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10148150B4 (en) * | 2001-09-28 | 2014-05-22 | Egon Evertz Kg (Gmbh & Co.) | Liquid-cooled continuous casting mold |
DE10217906A1 (en) * | 2002-04-23 | 2003-11-06 | Sms Demag Ag | Continuous casting mold for liquid metals, especially for liquid steel |
TWI268821B (en) * | 2002-04-27 | 2006-12-21 | Sms Demag Ag | Adjustment of heat transfer in continuous casting molds in particular in the region of the meniscus |
DE102007028064A1 (en) | 2007-06-19 | 2008-12-24 | Siemens Ag | Chill plate for a mold of a continuous casting plant |
WO2011093561A1 (en) * | 2010-01-29 | 2011-08-04 | 주식회사 풍산 | Mold plate, mold plate assembly and casting mold |
KR101111739B1 (en) * | 2010-01-29 | 2012-02-15 | 주식회사 풍산 | Mold plate, mold plate assembly and mold for casting |
KR101649678B1 (en) | 2014-10-10 | 2016-08-19 | 주식회사 포스코건설 | Apparatus for fixing mold plate of continuous casting |
DE102017211108A1 (en) * | 2017-06-30 | 2019-01-03 | Thyssenkrupp Ag | Mold plate and mold for a continuous casting plant and continuous casting process |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3536C (en) * | M. DEMMER in Dortmund | Iron superstructure for railways with three-headed rails | ||
DE969000C (en) * | 1951-03-09 | 1958-04-17 | Boehler & Co Ag Geb | Continuous casting mold |
DE1458168B1 (en) * | 1964-12-28 | 1971-05-27 | Mannesmann Ag | CONTINUOUSLY CASTING GLASS WITH DIFFERENT THERMAL CONDUCTIVITY |
DE2634633C2 (en) * | 1976-07-31 | 1984-07-05 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Continuous casting mold made of a copper material, especially for continuous casting of steel |
GB2100154B (en) * | 1981-04-27 | 1985-11-06 | Sumitomo Metal Ind | Molds for continuously casting steel |
US4450893A (en) * | 1981-04-27 | 1984-05-29 | International Telephone And Telegraph Corporation | Method and apparatus for casting metals and alloys |
DE8315638U1 (en) * | 1982-06-18 | 1988-03-10 | Clecim, Courbevoie | Plate for a continuous casting mould |
DE3400220A1 (en) * | 1984-01-05 | 1985-07-18 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | CHOCOLATE FOR CONTINUOUSLY STEEL STRIP |
DE3415050A1 (en) * | 1984-04-21 | 1985-10-31 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | METHOD FOR PRODUCING A CONTINUOUS CASTING CHILL WITH A WEAR-RESISTANT LAYER |
DE3909900A1 (en) * | 1989-03-25 | 1990-10-18 | Thyssen Stahl Ag | Continuous casting mould for the casting of steel strip |
US5716510A (en) * | 1995-10-04 | 1998-02-10 | Sms Schloemann-Siemag Inc. | Method of making a continuous casting mold |
DE59805207D1 (en) * | 1997-10-01 | 2002-09-19 | Concast Standard Ag | CHILLER TUBE FOR A CONTINUOUS CHOCOLATE FOR CONTINUOUSLY STEELING, IN PARTICULAR PERITECTIC STEELS |
DE19747305A1 (en) * | 1997-10-25 | 1999-04-29 | Km Europa Metal Ag | Mold for a continuous caster |
-
1998
- 1998-11-13 DE DE19852473A patent/DE19852473C5/en not_active Expired - Fee Related
-
1999
- 1999-11-04 ES ES99972136T patent/ES2185425T3/en not_active Expired - Lifetime
- 1999-11-04 EP EP99972136A patent/EP1128919B1/en not_active Expired - Lifetime
- 1999-11-04 KR KR1020017005885A patent/KR100627009B1/en not_active IP Right Cessation
- 1999-11-04 DE DE59902879T patent/DE59902879D1/en not_active Expired - Lifetime
- 1999-11-04 WO PCT/EP1999/008442 patent/WO2000029146A1/en active IP Right Grant
- 1999-11-04 AT AT99972136T patent/ATE224782T1/en active
- 1999-11-04 CA CA002351081A patent/CA2351081C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1128919A1 (en) | 2001-09-05 |
DE19852473C5 (en) | 2005-10-06 |
ES2185425T3 (en) | 2003-04-16 |
DE19852473C1 (en) | 2000-05-31 |
WO2000029146A1 (en) | 2000-05-25 |
DE59902879D1 (en) | 2002-10-31 |
ATE224782T1 (en) | 2002-10-15 |
KR20010089433A (en) | 2001-10-06 |
CA2351081C (en) | 2008-04-15 |
KR100627009B1 (en) | 2006-09-22 |
CA2351081A1 (en) | 2000-05-25 |
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