EP3548205A1 - Caterpillar casting machine and method for producing a cast material from liquid metal - Google Patents

Caterpillar casting machine and method for producing a cast material from liquid metal

Info

Publication number
EP3548205A1
EP3548205A1 EP17816504.9A EP17816504A EP3548205A1 EP 3548205 A1 EP3548205 A1 EP 3548205A1 EP 17816504 A EP17816504 A EP 17816504A EP 3548205 A1 EP3548205 A1 EP 3548205A1
Authority
EP
European Patent Office
Prior art keywords
cooling
casting
transport direction
nozzles
casting machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17816504.9A
Other languages
German (de)
French (fr)
Other versions
EP3548205B1 (en
Inventor
Sebastian BÖCKING
Guido Fick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3548205A1 publication Critical patent/EP3548205A1/en
Application granted granted Critical
Publication of EP3548205B1 publication Critical patent/EP3548205B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0657—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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0685—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting belts
    • 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
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0688—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the 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
    • B22D11/14—Plants for continuous casting
    • 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

Definitions

  • the invention relates to a caster casting machine for producing a cast metal from liquid metal according to the preamble of claim 1, and a corresponding method according to the preamble of claim 1 1st
  • horizontal block casting machines which function in the manner of a continuous crawler casting machine.
  • a casting machine is e.g. from EP 1 704 005 B1 or WO 95/27145.
  • the cooling elements of the casting machine form the wall of a moving casting mold on the straight sections or strands of casting caterpillars arranged opposite one another.
  • the casting caterpillars each consist of a plurality of endlessly interconnected cooling blocks, which are transported along the orbits of the caterpillars.
  • the cooling blocks are mounted on supporting elements, which are placed on chains and thus articulated as members of a chain.
  • EP 0 873 211 B2 and WO 97/26100 each disclose cooling systems for a continuous strip casting installation, in which a plurality of nozzles are provided for a supply of cooling means.
  • a disadvantage of these cooling systems according to the prior art is that no separate cooling zones are provided and a cooling rate per mold is not fixed. Rather, it is necessary to change the cooling rate that a plant operator makes such changes manually, which is also problematic in terms of safety.
  • the invention has for its object to optimize a caster casting machine and a corresponding method for producing a casting of liquid metal in terms of variability of the manufacturing process.
  • This object is achieved by a caster casting machine having the features specified in claim 1, and by a method according to claim 11.
  • Advantageous developments of the invention are defined in the dependent claims.
  • a caster casting machine serves the purpose of producing a foundry from a liquid metal.
  • the caster casting machine comprises two guide rails, with which two oppositely arranged endless horizontal orbits are formed, a plurality of support elements, which are each guided on the guide rails with attached cooling blocks, such that forms a continuous chain of support elements, in a transport direction is moved along the orbits, wherein between the cooling blocks, which come in straight sections of the orbits of the guide rails, a moving mold is formed for the foundry, and a cooling device, in particular for cooling the cooling blocks.
  • the cooling device has separate cooling zones, each having at least one cooling nozzle, wherein the cooling zones along the transport direction and / or transversely to the transport direction are individually controllable to adjust opening or closing of the cooling nozzles.
  • the present invention also provides a method for producing a casting of liquid metal.
  • the liquid metal is poured into a moving mold, which is formed between cooling blocks, which are mounted on each of two oppositely arranged endless orbits in a transport direction moving support elements.
  • each with at least one cooling nozzle are each driven individually, thereby opening or closing the cooling nozzles.
  • the transport direction in which the support elements are moved with the cooling blocks attached thereto along the respective guide rails and the orbits formed thereby synonymous with the casting direction in which the liquid metal is poured into the moving mold, which is formed between the cooling blocks in the straight portions of the opposite horizontal orbits.
  • each an upper bead and a lower bead are formed.
  • the moving mold is formed, within which a casting material is produced.
  • the invention is based on the essential finding that the cooling device has separate cooling zones, each with at least one cooling nozzle, which can be controlled individually. As a result, it is possible to selectively effect cooling of the cooling blocks and thus of the castings produced in the moving casting mold, e.g. depending on the selected casting width and / or the cast material type. For example, starting from an initial operating position in which all the cooling nozzles are open, cooling nozzles can be selectively closed in an edge region transverse to the transport or casting direction, in order to adapt the resulting cooling to a narrower casting width.
  • cooling zones and their cooling nozzles are closed along the transport or casting direction in order to reduce the resulting cooling effect in the casting direction and thereby adapt to a specific process parameter, in particular the metal type, a predetermined type of metal or metal alloy, which is cast in the moving mold to reach the casting width, casting speed or the casting profile.
  • the cooling device is arranged with their cooling nozzles such that a discharged through the cooling nozzles cooling medium acts directly on the cooling blocks.
  • a cooling device above an upper run of the upper Caterpillar and / or be arranged below a lower run of the lower bead so that a cooling medium, preferably water under pressure, is applied or sprayed by the cooling nozzles directly on a surface of the cooling blocks.
  • At least one cooling device can be arranged or accommodated in a gap between the runs of the upper or lower bead, in which case a cooling medium, preferably water under pressure, is sprayed through the cooling nozzles onto a rear side of the cooling blocks.
  • a cooling medium preferably water under pressure
  • the cooling device is formed in several parts with their associated cooling zones. Due to this multi-part cooling zones is advantageously an adaptation to the cooling blocks possible, which are intended to cool.
  • a control device may be provided by means of which the individual cooling nozzles can be controlled in the respective cooling zones.
  • a predetermined cooling model can be stored or stored in a memory of this control device, wherein based on this cooling model, a control of the nozzles takes place.
  • a temperature control of the casting within the mold is automatically influenced, whereby both the product quality and the economy are optimized.
  • such an automatic temperature control eliminates the need for manual adjustment, e.g. by handwheel, as is still required in conventional caster casting machines.
  • a precise adaptation to at least one predetermined process parameter, in particular the metal type, a predetermined metal alloy, the casting width, casting speed or the casting profile can also be achieved according to an advantageous development of the invention by individually controlling each cooling nozzle in partial regions of the cooling device. This can be realized by means of the aforementioned control device.
  • FIG. 1 is a plan view of a cooling device and its cooling zones, which are part of a caster casting machine according to the invention
  • Fig. 2-4 are plan views of the cooling device of Fig. 1, in possible
  • Fig. 5 is a side view of two guide rails, with which two oppositely arranged endless orbits are formed for a crawler molding machine according to the invention.
  • Fig. 6 is a side view of a crawler molding machine according to the invention, whose endless orbits are formed by the guide rails of FIG. 5 and in which a cooling device according to one of Fig. 1 -4 is used.
  • the caster casting machine 10 has at least one cooling device 20 which comprises separate cooling zones 22, each with a plurality of cooling nozzles 23.
  • a basically simplified plan view of such a cooling device 20 is shown in FIG. 1.
  • 5 shows a side view of two guide rails 12, with which two opposite horizontal endless circulation paths U are formed for the crawler casting machine 10.
  • a plurality of support elements 14 with cooling blocks 16 attached thereto are guided along each guide rail 12 such that a continuous chain of support elements 14 is formed, which is moved or transported in a transport direction T along the guide rails 16.
  • FIG. 5 shows only two support elements 14 with cooling blocks 16 attached thereto on the two guide rails 12.
  • FIG. 5 illustrates that a casting mold 18 is formed between the cooling blocks 16 which come into opposition in the straight sections of the circulation paths U formed by the guide rails 12.
  • this mold 15 is a mold moving in the transporting direction T.
  • the caster casting machine 10 has an upper bead 10. 1 and a lower bead 10. 2, which, as already explained above, are each formed by a plurality of support elements 14 and cooling blocks 16 attached thereto which are moved along the circulation paths U formed by the guide rails 14 in the transporting direction T.
  • the drive of the caterpillars 10.1, 10.2 takes place via drive wheels 13, which ensure a movement of the support elements 14 and the cooling blocks 16 attached thereto around the orbits U.
  • a pouring nozzle 19 which is elongated and protrudes with its outlet into the mold 18, liquid metal (eg aluminum, or an aluminum alloy) is poured into the moving mold 18 into it.
  • the caster casting machine 10 comprises at least one cooling device 20, by means of which, for example, the cooling blocks 16 which are fastened to the support elements 14 and circulate along the circulation paths U formed by the guide rails 14 adjacent to the casting mold 18 in the transport direction T can be cooled.
  • cooling devices 20 are arranged both above the upper run of the upper bead 10.1 and below the lower run of the lower bead 10.2 (compare FIG. 6).
  • water can be injected under pressure directly onto the cooling blocks 16 with the associated cooling nozzles 23, which is symbolized in FIG. 6 by corresponding arrows.
  • the cooling devices 20 are symbolized in the representation of FIG. 6 only in a simplified manner by rectangles.
  • the caster casting machine 10 comprises a control device 26 (see Fig. 6), by means of which the cooling nozzles 23 of one or more cooling devices (s) 20 can be suitably controlled in order to set the resulting cooling power.
  • the control device 26 can be signaled, e.g. be connected to a pumping device. This control device is shown only symbolically in FIG. 6 in the form of a rectangle.
  • the cooling device 20 shown in Fig. 1 may be part of the caster casting machine 10 of Fig. 6, wherein in Fig. 1, the transport direction T is also symbolized by an arrow.
  • the cooling device 20 has a plurality of separate cooling zones 22.
  • Within a cooling zone 22 are three cooling nozzles 23 (simplified by circles symbolized) arranged side by side, wherein in the illustration of Fig. 1, in the image area top right, a cooling zone 22 is shown individually pulled out for the purpose of illustration.
  • the cooling zones 22 of the cooling device 20 are arranged in the form of a matrix. Specifically, as seen in the transport direction T, a total of four cooling zones 22 (each with three cooling nozzles 23 arranged next to one another) are provided.
  • a total of eight cooling zones 22 are provided.
  • the said matrix for the cooling device 20 may also have a number of cooling zones 22 or cooling nozzles 23 which deviate from the illustration in FIG.
  • cooling nozzles 23 can be used, for example. Water is injected under pressure on the cooling blocks 16.
  • FIG. 1 the cooling device 20 is shown in an initial operating position, in which all of the cooling nozzles 23 are opened. Starting from this initial operating position, it is possible to purposefully close some of these cooling nozzles 23 by means of the control device 26, which leads to a correspondingly reduced cooling capacity and is explained below with reference to FIGS. 2 to 4.
  • 2 illustrates that here cooling nozzles are closed in an edge region R of the casting mold 18, which is symbolized by a hatching of these cooling nozzles and is designated by the reference symbol "23z.”
  • the remaining cooling nozzles, which are still open and from which thus a cooling medium is discharged are not hatched in the illustration of FIG. 2 and provided with the reference numeral "23a". As can be seen, in the operating position shown in FIG.
  • the cooling nozzles 23 a in a central region of the mold 18 along the transport direction T are all open.
  • edge nozzles R of the casting mold 18 can be selectively opened or closed as explained, the cooling for the casting 1 1 can be adapted to different casting widths, energy savings being achieved by a corresponding pump regulation.
  • cooling nozzles 23z are closed in the edge regions R of the casting mold 18, less water is required across the width of the casting mold 18.
  • it is also possible to influence the casting profile by targeted switching of individual cooling zones (ie, opening or closing of associated cooling nozzles 23).
  • Fig. 3 illustrates another possible operating position for the cooling device 20.
  • the cooling nozzles are in selected cooling zones 22 over the entire width of the mold 18, i. transverse to the transport direction T, which is symbolized by hatching of the associated circular symbols and indicated by the reference numeral "23z.”
  • Selected cooling nozzles 23z are thus closed in the transport direction T by means of the control device 26, which results in these regions
  • the temperature of the castings 11 and thus also the casting speed can be influenced in a targeted manner.
  • such a "transverse cut-off” can take the form of closing cooling nozzles 23z over the entire width of the casting mold 18 transversely to the transport direction T, the temperature profile in the casting 1 1 be influenced.
  • a temperature adaptation makes it possible to react better to the cast material 11 or the strip formed therefrom, as a result of which e.g. Hump or cracks for the casting 1 1 can be avoided.
  • the operating position shown in FIG. 4 corresponds to a combination of the operating positions of FIG. 2 and FIG. 3.
  • cooling nozzles 23 z are replaced by a suitable control by means of the control device 26 both over the width of the mold 18 (ie transversely to the transport direction T) and along the transport direction T closed.
  • the remaining open cooling nozzles are shown in the illustration of FIG. 4 is not hatched and provided with the reference numeral "23a" by way of example.
  • An advantageous automation of the production process can be achieved by storing a cooling model in a memory of the control device 26. On the basis of this model, the temperature control and the profile of the cast product 1 1 can be influenced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)

Abstract

The invention relates to a caterpillar casting machine (10) for producing a cast material (11) from liquid metal, comprising two guide rails (12), which are used to form two endless horizontal circulating tracks (U) arranged opposite each other, and a plurality of support elements (14), which are each guided on the guide rails (12) with cooling blocks (16) attached thereto such that a continuous chain of support elements (14) is formed, which support elements are moved in a transport direction (T) along the circulating tracks (U), wherein between the cooling blocks (16), which arrive at the opposite position in straight sections of the circulating tracks (U) of the guide rails (12), a moving casting mould (18) for the cast material (11) is formed. The caterpillar casting machine (10) also comprises a cooling device (20), which has separate cooling zones (22) each with at least one cooling nozzle (23), wherein the cooling zones (22) can be individually controlled along the transport direction (T) and/or transverse to the transport direction (T) to adjust an opening or closing of the cooling nozzles (23).

Description

Raupengießmaschine und Verfahren zum Herstellen eines Gießguts aus flüssigem Metall  Caster casting machine and method for producing a cast metal from liquid metal
Die Erfindung betrifft eine Raupengießmaschine zum Herstellen eines Gießguts aus flüssigem Metall nach dem Oberbegriff von Anspruch 1 , und ein entsprechendes Verfahren nach dem Oberbegriff von Anspruch 1 1. The invention relates to a caster casting machine for producing a cast metal from liquid metal according to the preamble of claim 1, and a corresponding method according to the preamble of claim 1 1st
Nach dem Stand der Technik sind insbesondere zur Herstellung von Aluminium- legierungen Horizontal-Blockgießmaschinen bekannt, die nach Art einer umlaufenden Raupengießmaschine funktionieren. Eine solche Gießmaschine ist z.B. aus EP 1 704 005 B1 oder WO 95/27145 bekannt. Hierbei bilden die Kühlelemente der Gießmaschine auf den geraden Abschnitten bzw. Trums von gegenüberliegend zueinander angeordneten Gießraupen die Wand einer sich bewegenden Gießform. Die Gießraupen bestehen jeweils aus einer Vielzahl von endlos miteinander verbundenen Kühlblöcken, die entlang der Umlaufbahnen der Raupen transportiert werden. Zu diesem Zweck sind die Kühlblöcke auf Tragelementen montiert, welche auf Ketten aufgesetzt werden und somit wie Glieder einer Kette gelenkig miteinander verbunden sind. According to the state of the art, in particular for the production of aluminum alloys, horizontal block casting machines are known which function in the manner of a continuous crawler casting machine. Such a casting machine is e.g. from EP 1 704 005 B1 or WO 95/27145. In this case, the cooling elements of the casting machine form the wall of a moving casting mold on the straight sections or strands of casting caterpillars arranged opposite one another. The casting caterpillars each consist of a plurality of endlessly interconnected cooling blocks, which are transported along the orbits of the caterpillars. For this purpose, the cooling blocks are mounted on supporting elements, which are placed on chains and thus articulated as members of a chain.
Aus EP 0 873 211 B2 und WO 97/26100 sind jeweils Kühlungssysteme für eine Bandstranggießanlage bekannt, bei denen eine Mehrzahl von Düsen für eine Zufuhr von Kühlmitteln vorgesehen sind. Nachteilig bei diesen Kühlungssystemen nach dem Stand der Technik ist, dass keine gesonderten Kühlzonen vorgesehen sind und eine Kühlrate je Kokille nicht festgelegt ist. Vielmehr ist es zur Veränderung der Kühlrate erforderlich, dass ein Anlagenbediener solche Veränderungen manuell vornimmt, was auch hinsichtlich der Arbeitssicherheit problematisch ist. EP 0 873 211 B2 and WO 97/26100 each disclose cooling systems for a continuous strip casting installation, in which a plurality of nozzles are provided for a supply of cooling means. A disadvantage of these cooling systems according to the prior art is that no separate cooling zones are provided and a cooling rate per mold is not fixed. Rather, it is necessary to change the cooling rate that a plant operator makes such changes manually, which is also problematic in terms of safety.
Entsprechend liegt der Erfindung die Aufgabe zugrunde, eine Raupengießmaschine und ein entsprechendes Verfahren zum Herstellen eines Gießguts aus flüssigem Metall hinsichtlich einer Variabilität des Herstellungsprozesses zu optimieren. Diese Aufgabe wird durch eine Raupengießmaschine mit den in Anspruch 1 angegebenen Merkmalen, und durch ein Verfahren gemäß Anspruch 11 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert. Accordingly, the invention has for its object to optimize a caster casting machine and a corresponding method for producing a casting of liquid metal in terms of variability of the manufacturing process. This object is achieved by a caster casting machine having the features specified in claim 1, and by a method according to claim 11. Advantageous developments of the invention are defined in the dependent claims.
Eine Raupengießmaschine nach der vorliegenden Erfindung dient dem Zweck, aus einem flüssigen Metall ein Gießgut herzustellen. Hierzu umfasst die Raupengießmaschine zwei Führungsschienen, mit denen zwei gegenüberliegend angeordnete endlose horizontale Umlaufbahnen gebildet werden, eine Mehrzahl von Tragelementen, die jeweils an den Führungsschienen mit daran angebrachten Kühlblöcken geführt sind, derart, dass sich eine durchgehende Kette von Tragelementen bildet, die in einer Transportrichtung entlang der Umlaufbahnen bewegt wird, wobei zwischen den Kühlblöcken, die in geraden Abschnitten der Umlaufbahnen der Führungsschienen in Gegenüberstellung gelangen, eine sich bewegende Gießform für das Gießgut ausgebildet wird, und eine Kühleinrichtung insbesondere zur Kühlung der Kühlblöcke. Die Kühleinrichtung weist separate Kühlzonen mit jeweils zumindest einer Kühldüse auf, wobei die Kühlzonen entlang der Transportrichtung und/oder quer zur Transportrichtung einzeln ansteuerbar sind, um ein Öffnen bzw. Schließen der Kühldüsen einzustellen. A caster casting machine according to the present invention serves the purpose of producing a foundry from a liquid metal. For this purpose, the caster casting machine comprises two guide rails, with which two oppositely arranged endless horizontal orbits are formed, a plurality of support elements, which are each guided on the guide rails with attached cooling blocks, such that forms a continuous chain of support elements, in a transport direction is moved along the orbits, wherein between the cooling blocks, which come in straight sections of the orbits of the guide rails, a moving mold is formed for the foundry, and a cooling device, in particular for cooling the cooling blocks. The cooling device has separate cooling zones, each having at least one cooling nozzle, wherein the cooling zones along the transport direction and / or transversely to the transport direction are individually controllable to adjust opening or closing of the cooling nozzles.
In gleicher Weise sieht die vorliegende Erfindung auch ein Verfahren zum Herstellen eines Gießguts aus flüssigem Metall vor. Hierbei wird das flüssige Metall in eine sich bewegende Gießform vergossen, die zwischen Kühlblöcken, die an entlang von jeweils zwei gegenüberliegend angeordneten endlosen Umlaufbahnen in einer Transportrichtung bewegten Tragelementen angebracht sind, gebildet ist. Entlang der Transportrichtung und/oder quer zur Transportrichtung werden separate Kühlzonen mit jeweils zumindest einer Kühldüse jeweils einzeln angesteuert, um dadurch die Kühldüsen zu öffnen oder zu schließen. Im Sinne der vorliegenden Erfindung ist die Transportrichtung, in der die Tragelemente mit den daran angebrachten Kühlblöcken entlang der jeweiligen Führungsschienen und der hierdurch ausgebildeten Umlaufbahnen bewegt werden, gleichbedeutend mit der Gießrichtung, in der das flüssige Metall in die sich bewegende Gießform, die zwischen den Kühlblöcken in den geraden Abschnitten der gegenüberliegenden horizontalen Umlaufbahnen gebildet wird, vergossen wird. Durch die Mehrzahl von an den Tragelementen befestigten Kühlblöcken, die entlang der endlosen horizontalen Umlaufbahnen geführt sind, werden je eine oberen Raupe und eine untere Raupe gebildet. In den geraden Abschnitten der Trums dieser beiden Raupen, die einander gegenüberliegend verlaufen, wird die sich bewegende Gießform ausgebildet, innerhalb der ein Gießgut erzeugt wird. In the same way, the present invention also provides a method for producing a casting of liquid metal. In this case, the liquid metal is poured into a moving mold, which is formed between cooling blocks, which are mounted on each of two oppositely arranged endless orbits in a transport direction moving support elements. Along the transport direction and / or transversely to the transport direction separate cooling zones, each with at least one cooling nozzle are each driven individually, thereby opening or closing the cooling nozzles. According to the present invention, the transport direction in which the support elements are moved with the cooling blocks attached thereto along the respective guide rails and the orbits formed thereby, synonymous with the casting direction in which the liquid metal is poured into the moving mold, which is formed between the cooling blocks in the straight portions of the opposite horizontal orbits. By the plurality of cooling blocks attached to the support elements, which are guided along the endless horizontal orbits, each an upper bead and a lower bead are formed. In the straight sections of the strands of these two tracks, which run opposite each other, the moving mold is formed, within which a casting material is produced.
Der Erfindung liegt die wesentliche Erkenntnis zugrunde, dass die Kühleinrichtung separate Kühlzonen mit jeweils zumindest einer Kühldüse aufweist, die einzeln angesteuert werden können. Hierdurch ist es möglich, eine resultierende Kühlung der Kühlblöcke und damit des in der sich bewegenden Gießform erzeugten Gießguts gezielt z.B. in Abhängigkeit von der gewählten Gießbreite und/oder des vergossenen Materialtyps einzustellen. Beispielsweise können - ausgehend von einer Ausgangsbetriebsposition, in der alle Kühldüsen geöffnet sind - Kühldüsen in einem Randbereich quer zur Transport- bzw. Gießrichtung gezielt geschlossen werden, um die resultierende Kühlung auf eine schmalere Gießbreite anzupassen. Ergänzend und/oder alternativ kann vorgesehen sein, dass ausgehend von der Ausgangsbetriebsposition ausgewählte Kühlzonen und deren Kühldüsen entlang der Transport- bzw. Gießrichtung geschlossen werden, um die resultierende Kühlwirkung in Gießrichtung zu reduzieren und dadurch eine Anpassung an einen bestimmten Prozessparameter, insbesondere den Metalltyp, eine vorbestimmte Metallsorte oder Metall-Legierung, die in die sich bewegende Gießform vergossen wird, die Gießbreite, Gießgeschwindigkeit oder das Gießprofil zu erreichen. The invention is based on the essential finding that the cooling device has separate cooling zones, each with at least one cooling nozzle, which can be controlled individually. As a result, it is possible to selectively effect cooling of the cooling blocks and thus of the castings produced in the moving casting mold, e.g. depending on the selected casting width and / or the cast material type. For example, starting from an initial operating position in which all the cooling nozzles are open, cooling nozzles can be selectively closed in an edge region transverse to the transport or casting direction, in order to adapt the resulting cooling to a narrower casting width. Additionally and / or alternatively it can be provided that starting from the initial operating position selected cooling zones and their cooling nozzles are closed along the transport or casting direction in order to reduce the resulting cooling effect in the casting direction and thereby adapt to a specific process parameter, in particular the metal type, a predetermined type of metal or metal alloy, which is cast in the moving mold to reach the casting width, casting speed or the casting profile.
In vorteilhafter Weiterbildung der Erfindung kann vorgesehen sein, dass die Kühleinrichtung mit ihren Kühldüsen derart angeordnet ist, dass ein durch die Kühldüsen ausgebrachtes Kühlmedium unmittelbar auf die Kühlblöcke einwirkt. Dies ist sowohl für die Kühlblöcke der oberen Raupe und/oder der unteren Raupe möglich. Beispielsweise kann eine Kühleinrichtung oberhalb eines oberen Trums der oberen Raupe und/oder unterhalb eines unteren Trums der unteren Raupe angeordnet sein, so dass ein Kühlmedium, vorzugsweise Wasser unter Druck, durch die Kühldüsen unmittelbar auf eine Oberfläche der Kühlblöcke ausgebracht bzw. gespritzt wird. Ergänzend und/oder alternativ kann zumindest eine Kühleinrichtung in einem Zwischenraum, der zwischen den Trums der oberen bzw. unteren Raupe angeordnet bzw. aufgenommen sein, wobei dann ein Kühlmedium, vorzugsweise Wasser unter Druck, durch die Kühldüsen auf eine Rückseite der Kühlblöcke gespritzt wird. In an advantageous embodiment of the invention can be provided that the cooling device is arranged with their cooling nozzles such that a discharged through the cooling nozzles cooling medium acts directly on the cooling blocks. This is possible for both the cooling blocks of the upper bead and / or the lower bead. For example, a cooling device above an upper run of the upper Caterpillar and / or be arranged below a lower run of the lower bead, so that a cooling medium, preferably water under pressure, is applied or sprayed by the cooling nozzles directly on a surface of the cooling blocks. Additionally and / or alternatively, at least one cooling device can be arranged or accommodated in a gap between the runs of the upper or lower bead, in which case a cooling medium, preferably water under pressure, is sprayed through the cooling nozzles onto a rear side of the cooling blocks.
In vorteilhafter Weiterbildung der Erfindung kann vorgesehen sein, dass die Kühleinrichtung mit ihren zugehörigen Kühlzonen mehrteilig ausgebildet ist. Durch diese Mehrteiligkeit der Kühlzonen ist vorteilhaft eine Anpassung an die Kühlblöcke möglich, die bestimmungsgemäß zu kühlen sind. In an advantageous embodiment of the invention can be provided that the cooling device is formed in several parts with their associated cooling zones. Due to this multi-part cooling zones is advantageously an adaptation to the cooling blocks possible, which are intended to cool.
In vorteilhafter Weiterbildung der Erfindung kann eine Steuerungseinrichtung vorgesehen sein, mittels der die einzelnen Kühldüsen in den jeweiligen Kühlzonen angesteuert werden können. Zweckmäßigerweise kann in einem Speicher dieser Steuerungseinrichtung ein vorbestimmtes Kühlmodell hinterlegt bzw. abgespeichert sein, wobei auf Grundlage dieses Kühlmodells eine Ansteuerung der Düsen erfolgt. In dieser Weise wird eine Temperaturführung des Gießguts innerhalb der Gießform automatisch beeinflusst, wodurch sowohl die Produktqualität als auch die Wirtschaftlichkeit optimiert werden. Insbesondere erübrigt sich durch eine solche automatische Temperaturführung die Notwendigkeit einer manuellen Einstellung z.B. per Handrad, wie dies bei herkömmlichen Raupengießmaschinen noch erforderlich ist. In an advantageous embodiment of the invention, a control device may be provided by means of which the individual cooling nozzles can be controlled in the respective cooling zones. Appropriately, a predetermined cooling model can be stored or stored in a memory of this control device, wherein based on this cooling model, a control of the nozzles takes place. In this way, a temperature control of the casting within the mold is automatically influenced, whereby both the product quality and the economy are optimized. In particular, such an automatic temperature control eliminates the need for manual adjustment, e.g. by handwheel, as is still required in conventional caster casting machines.
Eine präzise Anpassung an zumindest einen vorbestimmten Prozessparameter, insbesondere den Metalltyp, eine vorbestimmte Metalllegierung, die Gießbreite, Gießgeschwindigkeit oder das Gießprofil lässt sich nach einer vorteilhaften Weiterbildung der Erfindung auch dadurch erreichen, dass in Teilbereichen der Kühleinrichtung jede Kühldüse einzeln angesteuert wird. Dies kann mittels der vorstehend genannten Steuerungseinrichtung realisiert werden. Nachstehend sind bevorzugte Ausführungsformen der Erfindung anhand einer schematisch vereinfachten Zeichnung im Detail beschrieben. A precise adaptation to at least one predetermined process parameter, in particular the metal type, a predetermined metal alloy, the casting width, casting speed or the casting profile can also be achieved according to an advantageous development of the invention by individually controlling each cooling nozzle in partial regions of the cooling device. This can be realized by means of the aforementioned control device. Hereinafter, preferred embodiments of the invention with reference to a schematically simplified drawing are described in detail.
Es zeigen: Show it:
Fig. 1 eine Draufsicht auf eine Kühleinrichtung und deren Kühlzonen, die Teil einer erfindungsgemäßen Raupengießmaschine sind, 1 is a plan view of a cooling device and its cooling zones, which are part of a caster casting machine according to the invention,
Fig. 2-4 Draufsichten auf die Kühleinrichtung von Fig. 1 , in möglichen Fig. 2-4 are plan views of the cooling device of Fig. 1, in possible
Betriebszuständen,  Operating conditions,
Fig. 5 eine Seitenansicht von zwei Führungsschienen, mit denen zwei gegenüberliegend angeordnete endlose Umlaufbahnen für eine erfindungsgemäße Raupengießmaschine gebildet werden, und Fig. 5 is a side view of two guide rails, with which two oppositely arranged endless orbits are formed for a crawler molding machine according to the invention, and
Fig. 6 eine Seitenansicht einer erfindungsgemäßen Raupengießmaschine, deren endlose Umlaufbahnen durch die Führungsschienen gemäß Fig. 5 gebildet sind und bei der eine Kühleinrichtung nach einer der Fig. 1 -4 eingesetzt wird. Fig. 6 is a side view of a crawler molding machine according to the invention, whose endless orbits are formed by the guide rails of FIG. 5 and in which a cooling device according to one of Fig. 1 -4 is used.
Nachstehend sind unter Bezugnahme auf die Fig. 1 bis 6 bevorzugte Ausführungsformen einer erfindungsgemäßen Raupengießmaschine 10 und deren Komponenten erläutert, die zum Herstellen eines Gießguts 1 1 (vgl. Fig. 6) aus flüssigem Metall, insbesondere aus Aluminium, dient. Gleiche Merkmale in der Zeichnung sind jeweils mit gleichen Bezugszeichen versehen. An dieser Stelle wird gesondert darauf hingewiesen, dass die in der Zeichnung dargestellten Figuren lediglich vereinfacht und insbesondere ohne Maßstab gezeigt sind. 1 to 6, preferred embodiments of a crawler casting machine 10 according to the invention and their components will be explained below, which are used to produce a casting material 11 (see FIG. 6) made of liquid metal, in particular aluminum. Identical features in the drawing are each provided with the same reference numerals. At this point, it should be noted separately that the figures shown in the drawing are only simplified and shown in particular without scale.
Die Raupengießmaschine 10 weist zumindest eine Kühleinrichtung 20 auf, die separate Kühlzonen 22 mit jeweils einer Mehrzahl von Kühldüsen 23 umfasst. Eine prinzipiell vereinfachte Draufsicht auf eine solche Kühleinrichtung 20 ist in der Fig. 1 dargestellt. Bevor auf Einzelheiten dieser Kühleinrichtung 20, die Teil der Raupengießmaschine 10 ist, eingegangen wird, wird zunächst der strukturelle Aufbau einer solchen Raupengießmaschine 10 erläutert. Fig. 5 zeigt eine Seitenansicht von zwei Führungsschienen 12, mit denen zwei gegenüberliegend angeordnete endlose horizontale Umlaufbahnen U für die Raupengießmaschine 10 gebildet werden. Hierbei sind entlang jeder Führungsschiene 12 jeweils eine Mehrzahl von Tragelementen 14 mit daran angebrachten Kühlblöcken 16 geführt, derart, dass sich eine durchgehende Kette von Tragelementen 14 bildet, die in einer Transportrichtung T entlang der Führungsschienen 16 bewegt bzw. transportiert wird. Zur Veranschaulichung der Funktionsweise der vorliegenden Erfindung sind in der Fig. 5 an den beiden Führungsschienen 12 jeweils nur zwei Tragelemente 14 mit daran angebrachten Kühlblöcken 16 gezeigt. The caster casting machine 10 has at least one cooling device 20 which comprises separate cooling zones 22, each with a plurality of cooling nozzles 23. A basically simplified plan view of such a cooling device 20 is shown in FIG. 1. Before going into details of this cooling device 20, which is part of the crawler casting machine 10, the structural design of such a crawler casting machine 10 will first be explained. 5 shows a side view of two guide rails 12, with which two opposite horizontal endless circulation paths U are formed for the crawler casting machine 10. In this case, a plurality of support elements 14 with cooling blocks 16 attached thereto are guided along each guide rail 12 such that a continuous chain of support elements 14 is formed, which is moved or transported in a transport direction T along the guide rails 16. To illustrate the operation of the present invention, only two support elements 14 with cooling blocks 16 attached thereto are shown in FIG. 5 on the two guide rails 12.
Fig. 5 verdeutlicht, dass zwischen den Kühlblöcken 16, die in den geraden Abschnitten der durch die Führungsschienen 12 gebildeten Umlaufbahnen U in Gegenüberstellung gelangen, eine Gießform 18 ausgebildet wird. In Anbetracht der Transportrichtung T der Tragelemente 14 entlang der Führungsschienen 12 handelt es sich bei dieser Gießform 15 um eine sich in der Transportrichtung T bewegende Gießform. FIG. 5 illustrates that a casting mold 18 is formed between the cooling blocks 16 which come into opposition in the straight sections of the circulation paths U formed by the guide rails 12. In view of the transporting direction T of the support members 14 along the guide rails 12, this mold 15 is a mold moving in the transporting direction T.
Fig. 6 zeigt eine vereinfachte Seitenansicht der erfindungsgemäßen Raupen- gießmaschine 10. Die Raupengießmaschine 10 weist eine obere Raupe 10.1 und eine untere Raupe 10.2 auf, die - wie vorstehend bereits erläutert - jeweils aus einer Mehrzahl von Tragelementen 14 und daran befestigten Kühlblöcken 16 gebildet sind, die entlang der durch die Führungsschienen 14 gebildeten Umlaufbahnen U in der Transportrichtung T bewegt werden. Der Antrieb der Raupen 10.1 , 10.2 erfolgt jeweils über Antriebsräder 13, die eine Bewegung der Tragelemente 14 und der daran befestigten Kühlblöcke 16 um die Umlaufbahnen U sicherstellen. Mittels einer Gießdüse 19, die länglich ausgebildet ist und mit ihrem Auslauf in die Gießform 18 hineinragt, wird flüssiges Metall (z.B. Aluminium, oder eine Aluminium-Legierung) in die bewegte Gießform 18 hinein vergossen. Durch Erstarren des Metalls innerhalb der Gießform 18 wird ein Gießgut 1 1 erzeugt, das - im rechten Bildbereich von Fig. 6 angedeutet - stromabwärts der Raupen 10.1 , 10.2 aus dem Gießspalt 18 austritt und dann einer (nicht gezeigten) Bearbeitung zugeführt wird. Die Raupengießmaschine 10 umfasst zumindest eine Kühleinrichtung 20, mittels der z.B. die Kühlblöcke 16, die an den Tragelementen 14 befestigt sind und entlang der durch die Führungsschienen 14 ausgebildeten Umlaufbahnen U angrenzend zur Gießform 18 in der Transportrichtung T umlaufen, gekühlt werden können. Mittels geeigneter (nicht gezeigter) Halterungen sind Kühleinrichtungen 20 sowohl oberhalb des oberen Trums der oberen Raupe 10.1 , als auch unterhalb des unteren Trums der unteren Raupe 10.2 angeordnet (vgl. Fig. 6). Durch diese Kühleinrichtungen 20 kann mit den zugehörigen Kühldüsen 23 z.B. Wasser unter Druck unmittelbar auf die Kühlblöcke 16 gespritzt werden, was in der Fig. 6 durch entsprechende Pfeile symbolisiert ist. 6 shows a simplified side view of the crawler casting machine 10 according to the invention. The caster casting machine 10 has an upper bead 10. 1 and a lower bead 10. 2, which, as already explained above, are each formed by a plurality of support elements 14 and cooling blocks 16 attached thereto which are moved along the circulation paths U formed by the guide rails 14 in the transporting direction T. The drive of the caterpillars 10.1, 10.2 takes place via drive wheels 13, which ensure a movement of the support elements 14 and the cooling blocks 16 attached thereto around the orbits U. By means of a pouring nozzle 19, which is elongated and protrudes with its outlet into the mold 18, liquid metal (eg aluminum, or an aluminum alloy) is poured into the moving mold 18 into it. By solidification of the metal within the mold 18, a foundry 1 1 is generated, which - indicated in the right image area of Fig. 6 - downstream of the beads 10.1, 10.2 emerges from the casting gap 18 and then a (not shown) processing is supplied. The caster casting machine 10 comprises at least one cooling device 20, by means of which, for example, the cooling blocks 16 which are fastened to the support elements 14 and circulate along the circulation paths U formed by the guide rails 14 adjacent to the casting mold 18 in the transport direction T can be cooled. By means of suitable holders (not shown), cooling devices 20 are arranged both above the upper run of the upper bead 10.1 and below the lower run of the lower bead 10.2 (compare FIG. 6). By means of these cooling devices 20, for example, water can be injected under pressure directly onto the cooling blocks 16 with the associated cooling nozzles 23, which is symbolized in FIG. 6 by corresponding arrows.
Die Kühleinrichtungen 20 sind in der Darstellung von Fig. 6 lediglich vereinfacht jeweils durch Rechtecke symbolisiert. The cooling devices 20 are symbolized in the representation of FIG. 6 only in a simplified manner by rectangles.
Die Raupengießmaschine 10 umfasst eine Steuerungseinrichtung 26 (vgl. Fig. 6), mittels der die Kühldüsen 23 einer oder mehrerer Kühleinrichtung(en) 20 geeignet angesteuert werden können, um die resultierende Kühlleistung einzustellen. Zu diesem Zweck kann die Steuerungseinrichtung 26 signaltechnisch z.B. mit einer Pumpeinrichtung verbunden sein. Diese Steuerungseinrichtung ist in der Fig. 6 lediglich symbolisch in Form eines Rechtecks dargestellt. The caster casting machine 10 comprises a control device 26 (see Fig. 6), by means of which the cooling nozzles 23 of one or more cooling devices (s) 20 can be suitably controlled in order to set the resulting cooling power. For this purpose, the control device 26 can be signaled, e.g. be connected to a pumping device. This control device is shown only symbolically in FIG. 6 in the form of a rectangle.
Über eine (nicht gezeigte) Rückführungseinrichtung ist für die Ausführungsform von Fig. 6 gewährleistet, dass das durch die Kühldüsen 23 ausgebrachte Kühlmedium, nachdem es von den Kühlblöcken 16 abgeprallt ist bzw. - bei Verwendung von Wasser - davon abgetropft ist, geeignet aufgefangen wird und in einen (nicht gezeigten) Wasserhaushalt der Raupengießmaschine 10 rückgeführt wird. By means of a return device (not shown), it is ensured for the embodiment of FIG. 6 that the cooling medium discharged through the cooling nozzles 23 is suitably caught after being bounced off the cooling blocks 16 or drained therefrom by using water is returned to a (not shown) water balance of the crawler 10.
Die in Fig. 1 gezeigte Kühleinrichtung 20 kann Teil der Raupengießmaschine 10 von Fig. 6 sein, wobei in der Fig. 1 die Transportrichtung T ebenfalls durch einen Pfeil symbolisiert ist. Die Kühleinrichtung 20 weist eine Mehrzahl von separaten Kühlzonen 22 auf. Innerhalb einer Kühlzone 22 sind drei Kühldüsen 23 (vereinfacht durch Kreise symbolisiert) nebeneinander angeordnet, wobei in der Darstellung von Fig. 1 , im Bildbereich rechts oben, eine Kühlzone 22 zur Veranschaulichung einzeln herausgezogen gezeigt ist. Die Kühlzonen 22 der Kühleinrichtung 20 sind in Form einer Matrix angeordnet. Im Einzelnen sind - in der Transportrichtung T gesehen - insgesamt vier Kühlzonen 22 (mit jeweils drei nebeneinander angeordneten Kühldüsen 23) vorgesehen. Über der Breite der Gießform 18, d.h. in einer Richtung quer zur Transportrichtung T, sind bei der Ausführungsform von Fig. 1 insgesamt acht Kühlzonen 22 vorgesehen. Diesbezüglich versteht sich, dass die besagte Matrix für die Kühleinrichtung 20 auch eine von der Darstellung in Fig. 1 abweichende Anzahl an Kühlzonen 22 bzw. Kühldüsen 23 aufweisen kann. The cooling device 20 shown in Fig. 1 may be part of the caster casting machine 10 of Fig. 6, wherein in Fig. 1, the transport direction T is also symbolized by an arrow. The cooling device 20 has a plurality of separate cooling zones 22. Within a cooling zone 22 are three cooling nozzles 23 (simplified by circles symbolized) arranged side by side, wherein in the illustration of Fig. 1, in the image area top right, a cooling zone 22 is shown individually pulled out for the purpose of illustration. The cooling zones 22 of the cooling device 20 are arranged in the form of a matrix. Specifically, as seen in the transport direction T, a total of four cooling zones 22 (each with three cooling nozzles 23 arranged next to one another) are provided. Over the width of the mold 18, ie in a direction transverse to the transport direction T, in the embodiment of Fig. 1, a total of eight cooling zones 22 are provided. In this regard, it is understood that the said matrix for the cooling device 20 may also have a number of cooling zones 22 or cooling nozzles 23 which deviate from the illustration in FIG.
Wie vorstehend an anderer Stelle bereits erläutert, kann für die Erfindung vorgesehen sein, dass aus den Kühldüsen 23 z.B. Wasser unter Druck auf die Kühlblöcke 16 gespritzt wird. As already explained elsewhere above, it can be provided for the invention that the cooling nozzles 23 can be used, for example. Water is injected under pressure on the cooling blocks 16.
In der Fig. 1 ist die Kühleinrichtung 20 in einer Ausgangsbetriebsposition gezeigt, in der alle der Kühldüsen 23 geöffnet sind. Ausgehend von dieser Ausgangs- betriebsposition ist es möglich, einige dieser Kühldüsen 23 durch eine Ansteuerung mittels der Steuerungseinrichtung 26 gezielt zu schließen, was zu einer entsprechend reduzierten Kühlleistung führt und nachstehend unter Bezugnahme auf die Fig. 2 bis 4 erläutert ist. Die Darstellung von Fig. 2 veranschaulicht, dass hier Kühldüsen in einem Randbereich R der Gießform 18 geschlossen sind, was durch eine Schraffur dieser Kühldüsen symbolisiert und durch das Bezugszeichen „23z" bezeichnet ist. Die übrigen Kühldüsen, die weiterhin offen sind und aus denen somit ein Kühlmedium ausgebracht wird, sind in der Darstellung von Fig. 2 nicht schraffiert und mit dem Bezugszeichen„23a" versehen. Wie ersichtlich, sind bei der Betriebsposition gemäß Fig. 2 die Kühldüsen 23a in einem mittigen Bereich der Gießform 18 entlang der Transportrichtung T alle geöffnet. Dadurch, dass in Randbereichen R der Gießform 18 zugehörige Kühldüsen 23 wie erläutert gezielt geöffnet oder geschlossen werden können, kann die Kühlung für das Gießgut 1 1 auf unterschiedliche Gießbreiten angepasst werden, wobei eine Energieeinsparung durch eine entsprechende Pumpenregelung erzielt wird. Beispielsweise wird für schmalere Gießbreiten, wenn wie erläutert Kühldüsen 23z in den Randbereichen R der Gießform 18 geschlossen sind, weniger Wasser über der Breite der Gießform 18 benötigt. Hierbei ist es auch möglich, eine Beeinflussung des Gießprofils durch gezieltes Schalten einzelner Kühlzonen (d.h. Öffnen oder Schließen von zugehörigen Kühldüsen 23) zu erreichen. Zur Beeinflussung des Gießprofils kann es aber auch notwendig sein, randseitige Zonen der Gießform 18 weniger oder gar nicht zu kühlen, um sogenannte„kalte Schultern" gezielt zu vermeiden. In Fig. 1, the cooling device 20 is shown in an initial operating position, in which all of the cooling nozzles 23 are opened. Starting from this initial operating position, it is possible to purposefully close some of these cooling nozzles 23 by means of the control device 26, which leads to a correspondingly reduced cooling capacity and is explained below with reference to FIGS. 2 to 4. 2 illustrates that here cooling nozzles are closed in an edge region R of the casting mold 18, which is symbolized by a hatching of these cooling nozzles and is designated by the reference symbol "23z." The remaining cooling nozzles, which are still open and from which thus a cooling medium is discharged are not hatched in the illustration of FIG. 2 and provided with the reference numeral "23a". As can be seen, in the operating position shown in FIG. 2, the cooling nozzles 23 a in a central region of the mold 18 along the transport direction T are all open. As a result of the fact that edge nozzles R of the casting mold 18 can be selectively opened or closed as explained, the cooling for the casting 1 1 can be adapted to different casting widths, energy savings being achieved by a corresponding pump regulation. For example, for narrower casting widths, when, as explained, cooling nozzles 23z are closed in the edge regions R of the casting mold 18, less water is required across the width of the casting mold 18. In this case, it is also possible to influence the casting profile by targeted switching of individual cooling zones (ie, opening or closing of associated cooling nozzles 23). In order to influence the casting profile, it may also be necessary to cool edge zones of the casting mold 18 less or not at all, in order to avoid so-called "cold shoulders" in a targeted manner.
Die Fig. 3 veranschaulicht eine weitere mögliche Betriebsposition für die Kühleinrichtung 20. Hierbei sind die Kühldüsen in ausgewählten Kühlzonen 22 über der gesamten Breite der Gießform 18, d.h. quer zur Transportrichtung T, geschlossen, was durch eine Schraffur der zugehörigen Kreissymbole diese Kühldüsen symbolisiert und durch das Bezugszeichen „23z" angedeutet ist. In der Transportrichtung T gesehen werden somit durch eine Ansteuerung mittels der Steuerungseinrichtung 26 ausgewählte Kühldüsen 23z geschlossen, was in diesen Bereichen der Gießform 18 zu einer reduzierten Kühlleistung führt. Hierdurch kann die Temperatur des Gießgutes 1 1 und somit auch die Gießgeschwindigkeit gezielt beeinflusst werden. Anders ausgedrückt, kann durch eine solche„Querabschaltung" in Form eines Schließens von Kühldüsen 23z über der gesamten Breite der Gießform 18 quer zur Transportrichtung T der Temperaturverlauf in dem Gießgut 1 1 gezielt beeinflusst werden. Im Vergleich zu einer Änderung der Gießgeschwindigkeit kann durch eine solche Temperaturanpassung besser auf das Gießgut 1 1 bzw. das hieraus gebildete Band reagiert werden, wodurch z.B. Buckel oder Risse für das Gießgut 1 1 vermieden werden können. Fig. 3 illustrates another possible operating position for the cooling device 20. Here, the cooling nozzles are in selected cooling zones 22 over the entire width of the mold 18, i. transverse to the transport direction T, which is symbolized by hatching of the associated circular symbols and indicated by the reference numeral "23z." Selected cooling nozzles 23z are thus closed in the transport direction T by means of the control device 26, which results in these regions In this way, the temperature of the castings 11 and thus also the casting speed can be influenced in a targeted manner. In other words, such a "transverse cut-off" can take the form of closing cooling nozzles 23z over the entire width of the casting mold 18 transversely to the transport direction T, the temperature profile in the casting 1 1 be influenced. By comparison with a change in the casting speed, such a temperature adaptation makes it possible to react better to the cast material 11 or the strip formed therefrom, as a result of which e.g. Hump or cracks for the casting 1 1 can be avoided.
Die in der Fig. 4 dargestellte Betriebsposition entspricht einer Kombination der Betriebspositionen von Fig. 2 und Fig. 3. Hierbei werden Kühldüsen 23z durch eine geeignete Ansteuerung mittels der Steuerungseinrichtung 26 sowohl über der Breite der Gießform 18 (d.h. quer zur Transportrichtung T) als auch entlang der Transportrichtung T geschlossen. Die verbleibenden offenen Kühldüsen sind in der Darstellung von Fig. 4 nicht schraffiert gezeigt und exemplarisch mit dem Bezugszeichen„23a" versehen. The operating position shown in FIG. 4 corresponds to a combination of the operating positions of FIG. 2 and FIG. 3. In this case, cooling nozzles 23 z are replaced by a suitable control by means of the control device 26 both over the width of the mold 18 (ie transversely to the transport direction T) and along the transport direction T closed. The remaining open cooling nozzles are shown in the illustration of FIG. 4 is not hatched and provided with the reference numeral "23a" by way of example.
Durch die vorstehend erläuterte Ansteuerung der Kühlzonen 22, mit der ausgewählte Kühldüsen geöffnet (23a) oder geschlossen (23z) werden, kann in den zugeordneten Bereichen der Gießform 18 entlang der Transportrichtung T und/oder quer dazu eine gezielte Kühlleistung eingestellt werden. By the above-described control of the cooling zones 22, with the selected cooling nozzles open (23a) or closed (23z) can be set in the associated areas of the mold 18 along the transport direction T and / or across a targeted cooling performance.
Eine vorteilhafte Automatisierung des Herstellungsprozesses kann dadurch erreicht werden, dass in einem Speicher der Steuerungseinrichtung 26 ein Kühlmodell hinterlegt ist. Auf Grundlage dieses Modells kann die Temperaturführung und das Profil des erzeugten Gießguts 1 1 beeinflusst werden. An advantageous automation of the production process can be achieved by storing a cooling model in a memory of the control device 26. On the basis of this model, the temperature control and the profile of the cast product 1 1 can be influenced.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
10 Raupengießmaschine 10 caster casting machine
10.1 obere Raupe  10.1 upper caterpillar
10.2 untere Raupe  10.2 lower caterpillar
11 Gießgut  11 foundry material
12 Führungsschienen  12 guide rails
13 Antriebsrad  13 drive wheel
14 Tragelement  14 supporting element
16 Kühlblock  16 cooling block
18 Gießform  18 casting mold
19 Gießdüse  19 casting nozzle
20 Kühleinrichtung  20 cooling device
22 Kühlzone  22 cooling zone
23 Kühldüsen  23 cooling nozzles
23a geöffnete Kühldüsen  23a opened cooling nozzles
23z geschlossene Kühldüsen 23z closed cooling nozzles
24 Zwischenraum 24 space
25 Zwischenraum  25 space
26 Steuerungseinrichtung  26 control device
R Randbereich  R border area
T Transportrichtung/Gießrichtung u Umlaufbahn  T transport direction / casting direction u orbit

Claims

Patentansprüche  claims
Raupengießmaschine (10) zum Herstellen eines Gießguts (1 1 ) aus flüssigem Metall, umfassend Caster casting machine (10) for producing a cast metal (1 1) from liquid metal, comprising
zwei Führungsschienen (12), mit denen zwei gegenüberliegend angeordnete endlose horizontale Umlaufbahnen (U) gebildet werden;  two guide rails (12), with which two oppositely arranged endless horizontal orbits (U) are formed;
eine Mehrzahl von Tragelementen (14), die jeweils an den Führungsschienen (12) mit daran angebrachten Kühlblöcken (16) geführt sind, derart, dass sich eine durchgehende Kette von Tragelementen (14) bildet, die in einer Transportrichtung (T) entlang der Umlaufbahnen (U) bewegt werden, wobei zwischen den Kühlblöcken (16), die in geraden Abschnitten der Umlaufbahnen (U) der Führungsschienen (12) in Gegenüberstellung gelangen, eine sich bewegende Gießform (18) für das Gießgut (1 1 ) ausgebildet wird, und eine Kühleinrichtung (20),  a plurality of support members (14) each guided on the guide rails (12) with cooling blocks (16) attached thereto, such that a continuous chain of support members (14) is formed in a transport direction (T) along the orbits (U) are moved, wherein between the cooling blocks (16), which come in straight portions of the circulating paths (U) of the guide rails (12), a moving mold (18) for the cast material (1 1) is formed, and a cooling device (20),
dadurch gekennzeichnet,  characterized,
dass die Kühleinrichtung (20) separate Kühlzonen (22) mit jeweils zumindest einer Kühldüse (23) aufweist, wobei die Kühlzonen (22) entlang der Transportrichtung (T) und/oder quer zur Transportrichtung (T) einzeln ansteuerbar sind, um ein Öffnen bzw. Schließen der Kühldüsen (23) einzustellen.  in that the cooling device (20) has separate cooling zones (22) each having at least one cooling nozzle (23), the cooling zones (22) being individually controllable along the transport direction (T) and / or transversely to the transport direction (T), in order to open or close them Close the cooling nozzles (23).
Raupengießmaschine (10) nach Anspruch 1 , dadurch gekennzeichnet, dass die Kühlzonen (22) der Kühleinrichtung (20) derart angeordnet sind, dass ein durch die Kühldüsen (23) ausgebrachtes Kühlmedium auf die Kühlblöcke (16) einwirkt. Caster casting machine (10) according to claim 1, characterized in that the cooling zones (22) of the cooling device (20) are arranged such that a through the cooling nozzles (23) discharged cooling medium acts on the cooling blocks (16).
Raupengießmaschine (10) nach Anspruch 2, dadurch gekennzeichnet, dass die Kühldüsen (23) auf die Kühlblöcke (16) einer oberen Raupe (10.1 ) gerichtet sind. Caster casting machine (10) according to claim 2, characterized in that the cooling nozzles (23) are directed towards the cooling blocks (16) of an upper bead (10.1).
Raupengießmaschine (10) nach Anspruch 3, dadurch gekennzeichnet, dass zumindest eine Kühleinrichtung (20) oberhalb eines oberen Trums der oberen Raupe (10.1 ) angeordnet ist, wobei ein Kühlmedium durch die Kühldüsen (23) von oben auf die Kühlblöcke (23) ausbringbar ist. Caster casting machine (10) according to claim 3, characterized in that at least one cooling device (20) above an upper run of the upper Caterpillar (10.1) is arranged, wherein a cooling medium through the cooling nozzles (23) from above on the cooling blocks (23) can be brought out.
Raupengießmaschine (10) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Kühldüsen (23) auf die Kühlblöcke (16) einer unteren Raupe (10.2) gerichtet sind. Caster casting machine (10) according to one of claims 2 to 4, characterized in that the cooling nozzles (23) are directed towards the cooling blocks (16) of a lower bead (10.2).
Raupengießmaschine (10) nach Anspruch 5, dadurch gekennzeichnet, dass zumindest eine Kühleinrichtung (20) unterhalb eines unteren Trums der unteren Raupe (10.2) angeordnet ist, wobei ein Kühlmedium durch die Kühldüsen (23) von unten auf die Kühlblöcke (23) ausbringbar ist. Caster casting machine (10) according to claim 5, characterized in that at least one cooling device (20) below a lower run of the lower bead (10.2) is arranged, wherein a cooling medium through the cooling nozzles (23) from below on the cooling blocks (23) can be discharged ,
Raupengießmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Kühlung für die Kühlblöcke (16) auf eine vorbestimmte Gießbreite anpassbar ist, indem Kühlzonen (22) mit deren Kühldüsen (23) in einem Randbereich (R) quer zur Transportrichtung (T) angesteuert, vorzugsweise geschlossen werden. Caster casting machine (10) according to one of the preceding claims, characterized in that a cooling for the cooling blocks (16) is adaptable to a predetermined casting width by cooling zones (22) with their cooling nozzles (23) in an edge region (R) transversely to the transport direction ( T), preferably closed.
Raupengießmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Kühlung für die Kühlblöcke (16) auf zumindest einen vorbestimmten Prozessparameter, insbesondere den Metalltyp, eine vorbestimmte Metalllegierung, die Gießbreite, Gießgeschwindigkeit und/oder das Gießprofil anpassbar ist, indem Kühlzonen (22) mit deren Kühldüsen (23) in einem entlang der Transportrichtung (T) angesteuert, vorzugsweise geschlossen werden. Caster casting machine (10) according to one of the preceding claims, characterized in that a cooling for the cooling blocks (16) on at least one predetermined process parameters, in particular the metal type, a predetermined metal alloy, the casting width, casting speed and / or the casting profile is adaptable by cooling zones (22) are driven with their cooling nozzles (23) in one along the transport direction (T), preferably closed.
Raupengießmaschine (10) nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Steuerungseinrichtung (26), mittels der die einzelnen Kühldüsen (23) in den jeweiligen Kühlzonen (22) ansteuerbar sind. Caster casting machine (10) according to one of the preceding claims, characterized by a control device (26) by means of which the individual cooling nozzles (23) in the respective cooling zones (22) are controllable.
0. Raupengießmaschine (10) nach Anspruch 9, dadurch gekennzeichnet, dass in der Steuereinrichtung ein vorbestimmtes Kühlmodell hinterlegt ist, wobei auf Grundlage dieses Kühlmodells eine Ansteuerung der Kühldüsen (23) und somit eine Temperaturführung des Gießguts (11 ) innerhalb der Gießform (18) automatisch beeinflusst wird. 0. caster casting machine (10) according to claim 9, characterized in that in the control device, a predetermined cooling model is deposited, wherein on Based on this cooling model, a control of the cooling nozzles (23) and thus a temperature control of the casting (11) within the mold (18) is automatically influenced.
Verfahren zum Herstellen eines Gießguts (1 1 ) aus flüssigem Metall, bei dem das flüssige Metall in eine sich bewegende Gießform (18) vergossen wird, die zwischen Kühlblöcken (16), die an entlang von jeweils zwei gegenüberliegend angeordneten endlosen Umlaufbahnen (U) in einer Transportrichtung (T) bewegten Tragelementen (14) angebracht sind, gebildet ist, A method for producing a cast metal product (1 1), wherein the molten metal is poured into a moving casting mold (18) between cooling blocks (16) arranged along each of two oppositely disposed endless circulatory paths (U) a transport direction (T) are mounted moving support elements (14) is formed,
dadurch gekennzeichnet, characterized,
dass entlang der Transportrichtung (T) und/oder quer zur Transportrichtung (T) eine Kühleinrichtung (20) mit separaten Kühlzonen (22) und darin jeweils zumindest eine Kühldüse (23) vorgesehen ist, die jeweils einzeln angesteuert werden, um dadurch die zumindest eine Kühldüse (23) zu öffnen oder zu schließen. a cooling device (20) with separate cooling zones (22) and therein at least one cooling nozzle (23) are provided along the transport direction (T) and / or transversely to the transport direction (T), which are each controlled individually, thereby at least one Cooling nozzle (23) to open or close.
Verfahren nach Anspruch 1 1 , dadurch gekennzeichnet, dass die Kühlzonen (22) in einem Randbereich (R) quer zur Transportrichtung (T) angesteuert werden, um eine Kühlung für die Kühlblöcke (16) auf eine vorbestimmte Gießbreite anzupassen. A method according to claim 1 1, characterized in that the cooling zones (22) in an edge region (R) are driven transversely to the transport direction (T) in order to adapt a cooling for the cooling blocks (16) to a predetermined casting width.
Verfahren nach einem der Ansprüche 1 1 oder 12, dadurch gekennzeichnet, dass die Kühlzonen (22) entlang der Transportrichtung (T) angesteuert werden, um eine Kühlung auf einen vorbestimmten Prozessparameter, insbesondere den Metalltyp , eine vorbestimmte Metalllegierung, die Gießbreite, Gießgeschwindigkeit oder das Gießprofil anzupassen. Method according to one of claims 1 1 or 12, characterized in that the cooling zones (22) along the transport direction (T) are driven to a cooling to a predetermined process parameters, in particular the metal type, a predetermined metal alloy, the casting width, casting speed or Adjust casting profile.
EP17816504.9A 2016-11-29 2017-11-24 Caterpillar casting machine and method for producing a cast material from liquid metal Active EP3548205B1 (en)

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