WO2004037466A1 - Method and roll-type continuous casting machine for the production of a metal strip - Google Patents

Method and roll-type continuous casting machine for the production of a metal strip Download PDF

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Publication number
WO2004037466A1
WO2004037466A1 PCT/EP2003/010037 EP0310037W WO2004037466A1 WO 2004037466 A1 WO2004037466 A1 WO 2004037466A1 EP 0310037 W EP0310037 W EP 0310037W WO 2004037466 A1 WO2004037466 A1 WO 2004037466A1
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WO
WIPO (PCT)
Prior art keywords
casting
roll
cooling
rolls
cooled
Prior art date
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PCT/EP2003/010037
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German (de)
French (fr)
Inventor
Heinrich Tanner
Original Assignee
Heinrich Tanner
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 Heinrich Tanner filed Critical Heinrich Tanner
Priority to AU2003264286A priority Critical patent/AU2003264286A1/en
Publication of WO2004037466A1 publication Critical patent/WO2004037466A1/en

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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
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels

Definitions

  • the invention relates to a method for producing a metal strip by continuously pouring molten metal according to the preamble of claim 1 and a roller band casting machine for performing the method.
  • both casting rollers are cooled intensively from the inside and / or outside.
  • the casting rolls are usually each with a jacket part or bales made of one material Provide high thermal conductivity, which is flowed through by a cooling medium, preferably water.
  • the present invention is based on the object of proposing a method of the type mentioned at the outset and of creating a roller belt casting machine for carrying out the method, which enable the production of an advantageous structural structure of the strip produced or of a particular solidification pattern thereof.
  • Fig. 1 is a schematic side view of a partially illustrated
  • Fig. 2 is a schematic plan view of the partially shown in section
  • Fig. L. 1 schematically shows two casting rolls 11, 12 of a band casting machine 10, which can be rotated about horizontal axes.
  • the casting rolls 11, 12 each have an outer casing 21, 22 and form a casting gap 6, which is arranged by two in the end region of the casting rolls 11, 12 Side seals 25 is limited and its size can be adjusted.
  • the casting gap 6 can be between 1 to 15 mm, preferably 1.5 to 5 mm.
  • the liquid metal 27 is poured in from a container (not shown in more detail) through an indicated pouring pipe 15 between the two casting rollers 11, 12 and the side seals 25 via a pouring device (not shown).
  • the metal strip produced is led away in the direction of arrow B through the casting gap 6 between the two casting rolls 11, 12.
  • one of the casting rolls for example the casting roll 11, is provided with a cylindrical jacket 21, which consists of a material with high thermal conductivity and through which a cooling medium, preferably water, flows.
  • the jacket 21 is equipped, for example, with a number of cooling channels 21 ′, 22 ′ running in the longitudinal direction of the casting roll 11 and distributed over the circumference of the casting roll.
  • the casting roll 21 is cooled to different degrees in relation to the other casting roll 22.
  • this is realized in that the cooling channels 21 'of one casting roll 21 with a larger flow cross section 31 than the flow cross sections 32 of the cooling channels 22' of the other casting roll 22 are designed.
  • the water cooling quantity is fed for both casting rolls 21, 22 from the same pump, so that the casting roll 21 with the larger through-flow cross section 31 results in a higher throughput of the cooling water and thus a stronger cooling in the lateral surface than that of the casting roll 22.
  • the one casting roll could also be provided at least with a coating or a layer of refractory material or the like and not be cooled at all during operation, which is not shown in more detail.
  • it can be a metal casting roll with a ceramic coating.
  • such a casting roll is therefore not cooled at all or if necessary only minimally.
  • the casting roll 11 provided with the cooling jacket 21 cannot be cooled - as much as possible - but only with a cooling intensity that is in a certain ratio to the cooling intensity of the other casting roll 12, so that the metal melt optimally solidifies on the surface thereof Casting roller 1 1 is brought about.
  • This solidification pattern can also be influenced, for example, electromagnetically (by generating flows in the molten metal).
  • the invention could of course be demonstrated in other exemplary embodiments. So the two casters could also come from be designed identically and in the case of one casting roll, according to the invention, less cooling water is simply let through through the cooling channels provided in the jacket surface.
  • the cooling capacity for one and / or the other casting roll during casting could be controlled or regulated by appropriate control means, in particular in the case of changing casting parameters, such as, for example, changing temperatures of the casting roll surfaces or the metal melt.

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

Abstract

Disclosed is a method for producing a metal strip by continuously casting molten metal. Said method is carried out by means of two parallel casting rolls (11, 12) which form a casting gap (6) and are provided with a corresponding casting roll cooling mechanism, only one of the two casting rolls being cooled or one casting roll being cooled in a manner that is different from the other casting roll. In the latter case, the outer coatings of the two casting rolls (11, 12) are cooled at cooling intensities that are at a certain proportion to each other, whereby a special solidification pattern or fine structure is created.

Description

Verfahren sowie eine Rollen-Bandgiessmaschine zur Herstellung einesProcess and a roll belt casting machine for producing a
Metallbandesmetal strip
Die Erfindung betrifft ein Verfahren zur Herstellung eines Metallbandes durch kontinuierliches Abgiessen von Metallschmelze gemäss dem Oberbegriff des Anspruches 1 sowie eine Rollen-Bandgiessmaschine zur Durchführung des Verfahrens.The invention relates to a method for producing a metal strip by continuously pouring molten metal according to the preamble of claim 1 and a roller band casting machine for performing the method.
Bei bekannten Rollen-Bandgiessmaschinen werden beide Giessrollen intensiv von innen und/oder aussen gekühlt. Die Giessrollen sind üblicherweise jeweils mit einem Mantelteil bzw. Ballen aus einem Material mit hoher Wärmeleitfähigkeit versehen, der von einem Kühlmedium, vorzugsweise Wasser, durchströmt wird.In known roller band casting machines, both casting rollers are cooled intensively from the inside and / or outside. The casting rolls are usually each with a jacket part or bales made of one material Provide high thermal conductivity, which is flowed through by a cooling medium, preferably water.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art vorzuschlagen sowie eine Rollen-Bandgiessmaschine zur Durchführung des Verfahrens zu schaffen, welche die Erzeugung einer vorteilhaften Gefügestruktur des erzeugten Bandes bzw. eines besonderen Erstarrungsbildes desselben ermöglichen.The present invention is based on the object of proposing a method of the type mentioned at the outset and of creating a roller belt casting machine for carrying out the method, which enable the production of an advantageous structural structure of the strip produced or of a particular solidification pattern thereof.
Diese Aufgabe ist erfindungsgemäss durch ein Verfahren nach Anspruch 1 sowie durch eine Rollen-Bandgiessmaschine mit den Merkmalen des Anspruches 4 gelöst.This object is achieved according to the invention by a method according to claim 1 and by a roller band casting machine with the features of claim 4.
Weitere bevorzugte Ausgestaltungen des erfindungsgemässen Verfahrens und der erfindungsgemässen Rollen-Bandgiessmaschine bilden den Gegenstand der abhängigen Ansprüche.Further preferred refinements of the method according to the invention and the roller band casting machine according to the invention form the subject of the dependent claims.
Dadurch, dass nur eine der Giessrollen oder die eine Giessrolle unterschiedlich im Verhältnis zu der anderen Giessrolle gekühlt wird, wird ein besonderes Erstarrungsbild bzw. Gefügestruktur erzeugt, das beispielsweise bei der Herstellung von amorphen Stahlbändern vorteilhaft ist.The fact that only one of the casting rolls or the one casting roll is cooled differently in relation to the other casting roll creates a particular solidification pattern or structure which is advantageous, for example, in the production of amorphous steel strips.
Die Erfindung sowie weitere Vorteile derselben sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigt:The invention and further advantages thereof are explained in more detail below with reference to the drawing. It shows:
Fig. 1 eine schematische Seitenansicht einer teilweise veranschaulichtenFig. 1 is a schematic side view of a partially illustrated
Rollen-Bandgiessmaschine, und Fig. 2 eine schematische Draufsicht der teilweise im Schnitt dargestelltenRoller band casting machine, and Fig. 2 is a schematic plan view of the partially shown in section
Rollen der Bandgiessmaschine nach Fig. l . Fig. l zeigt schematisch zwei um horizontale Achsen drehbare Giessrollen 11, 12 einer teilweise gezeigten Bandgiessmaschine 10. Die Giessrollen 11, 12 weisen je einen Aussenmantel 21, 22 auf und bilden einen Giessspalt 6, der durch zwei im Stirnseitenbereich der Giessrollen 11, 12 angeordnete Seitenabdichtungen 25 begrenzt ist und in seiner Grosse eingestellt werden kann. Beispielsweise kann der Giessspalt 6 zwischen 1 bis 15 mm, vorzugsweise 1,5 bis 5 mm betragen.Rolling the belt casting machine according to Fig. L. 1 schematically shows two casting rolls 11, 12 of a band casting machine 10, which can be rotated about horizontal axes. The casting rolls 11, 12 each have an outer casing 21, 22 and form a casting gap 6, which is arranged by two in the end region of the casting rolls 11, 12 Side seals 25 is limited and its size can be adjusted. For example, the casting gap 6 can be between 1 to 15 mm, preferably 1.5 to 5 mm.
Zur Erzeugung eines Metallbandes wird von einem nicht näher gezeigten Behälter durch ein angedeutetes Giessrohr 15 zwischen die beiden Giessrollen 11, 12 und die Seitenabdichtungen 25 über eine nicht dargestellte Eingiessvorrichtung das flüssige Metall 27 eingegossen. Das erzeugte Metallband wird durch den Giessspalt 6 zwischen den beiden Giessrollen 11, 12 in Pfeilrichtung B weggeführt.To produce a metal strip, the liquid metal 27 is poured in from a container (not shown in more detail) through an indicated pouring pipe 15 between the two casting rollers 11, 12 and the side seals 25 via a pouring device (not shown). The metal strip produced is led away in the direction of arrow B through the casting gap 6 between the two casting rolls 11, 12.
Gemäss Fig. 2 ist eine der Giessrollen, beispielsweise die Giessrolle 11, mit einem zylindrischen Mantel 21 versehen, der aus einem Material mit hoher Wärmeleitfähigkeit besteht, und hierbei von einem Kühlmedium, vorzugsweise Wasser, durchströmt wird. Zu diesem Zweck ist der Mantel 21 beispielsweise mit einer Anzahl von in Längsrichtung der Giessrolle 11 verlaufenden, über den Giessrollenumfang verteilten Kühlkanälen 21 ', 22' ausgerüstet.According to FIG. 2, one of the casting rolls, for example the casting roll 11, is provided with a cylindrical jacket 21, which consists of a material with high thermal conductivity and through which a cooling medium, preferably water, flows. For this purpose, the jacket 21 is equipped, for example, with a number of cooling channels 21 ′, 22 ′ running in the longitudinal direction of the casting roll 11 and distributed over the circumference of the casting roll.
Erfindungsgemäss wird die Giessrolle 21 im Verhältnis zu der anderen Giessrolle 22 unterschiedlich stark gekühlt.According to the invention, the casting roll 21 is cooled to different degrees in relation to the other casting roll 22.
Im vorliegenden Ausführungsbeispiel ist dies realisiert, indem die Kühlkanäle 21 ' der einen Giessrolle 21 mit grösserem Durchlaufquerschnitt 31 als die Durchlaufquerschnitte 32 der Kühlkanäle 22' der anderen Giessrolle 22 ausgelegt sind. Die Wasserkühlmenge wird hierbei für beide Giessrollen 21 , 22 von der gleichen Pumpe aus gespiesen, so dass sich bei der Giessrolle 21 mit dem grösseren Durchlaufquerschnitt 31 eine höhere Durchsatzleistung des Kühlwassers und damit eine stärkere Kühlung bei der Mantelfläche als bei derjenigen der Giessrolle 22 ergibt.In the present exemplary embodiment, this is realized in that the cooling channels 21 'of one casting roll 21 with a larger flow cross section 31 than the flow cross sections 32 of the cooling channels 22' of the other casting roll 22 are designed. The water cooling quantity is fed for both casting rolls 21, 22 from the same pump, so that the casting roll 21 with the larger through-flow cross section 31 results in a higher throughput of the cooling water and thus a stronger cooling in the lateral surface than that of the casting roll 22.
Die eine Giessrolle könnte aber im Rahmen der Erfindung auch zumindest mit einem Überzug bzw. einer Schicht aus feuerfestem Material oder dergleichen versehen und im Betrieb gar nicht gekühlt sein, was nicht näher dargestellt ist. Beispielsweise kann es sich um eine metallene Giessrolle mit einem Keramiküberzug handeln. Eine solche Giessrolle wird somit im Gegensatz zu der anderen Giessrolle überhaupt nicht oder gegebenenfalls nur minimal gekühlt.However, within the scope of the invention, the one casting roll could also be provided at least with a coating or a layer of refractory material or the like and not be cooled at all during operation, which is not shown in more detail. For example, it can be a metal casting roll with a ceramic coating. In contrast to the other casting roll, such a casting roll is therefore not cooled at all or if necessary only minimally.
Aber auch die mit dem Kühlmantel 21 versehene Giessrolle 11 kann nicht - wie maximal möglich - gekühlt werden, sondern nur mit einer Kühlintensität, die in einem bestimmten Verhältnis zur Kühlintensität der anderen Giessrolle 12 steht, so dass eine optimale Erstarrung der Metallschmelze an der Oberfläche dieser Giessrolle 1 1 herbeigeführt wird.However, the casting roll 11 provided with the cooling jacket 21 cannot be cooled - as much as possible - but only with a cooling intensity that is in a certain ratio to the cooling intensity of the other casting roll 12, so that the metal melt optimally solidifies on the surface thereof Casting roller 1 1 is brought about.
Es wird somit ein besonderer Effekt auf die Erstarrung des erzeugten Bandes erzeugt, bei welchem eine ausreichend starke Hautbildung des Bandes gewährleistet ist, das jedoch beispielsweise die Erzeugung von amorphen Stahlbändern (z.B. für Transformatoren) ermöglicht. Dieses Erstarrungsbild kann zusätzlich beispielsweise elektromagnetisch (durch Erzeugung von Strömungen in der Metallschmelze) zusätzlich beeinflusst werden.This creates a special effect on the solidification of the strip produced, in which a sufficiently strong skin formation of the strip is guaranteed, but which, for example, enables the production of amorphous steel strips (e.g. for transformers). This solidification pattern can also be influenced, for example, electromagnetically (by generating flows in the molten metal).
Die Erfindung könnte selbstverständlich noch in anderen Ausführungsbeispielen dargetan werden. So könnten die beiden Giessrollen auch aus Kos- tengründen identisch ausgebildet sein und bei der einen Giessrolle erfin- dungsgemäss einfach weniger Kühlwasser durch die in ihr bei der Manteloberfläche vorgesehenen Kühlkanäle durchgelassen werden.The invention could of course be demonstrated in other exemplary embodiments. So the two casters could also come from be designed identically and in the case of one casting roll, according to the invention, less cooling water is simply let through through the cooling channels provided in the jacket surface.
Hierbei könnte die Kühlleistung für die eine und/oder die andere Giessrolle während dem Giessen insbesondere bei sich verändernden Giessparame- tern, wie beispielsweise bei sich ändernden Temperaturen der Giessrollen- oberflächen oder der Metallschmelze, durch entsprechende Steuerungsmittel gesteuert oder geregelt werden. The cooling capacity for one and / or the other casting roll during casting could be controlled or regulated by appropriate control means, in particular in the case of changing casting parameters, such as, for example, changing temperatures of the casting roll surfaces or the metal melt.

Claims

PATENTANSPRÜCHE
1. Verfahren zur Herstellung eines Metallbandes durch kontinuierliches Abgiessen von Metallschmelze zwischen zwei parallel angeordneten, einen Giessspalt (6) bildenden Giessrollen (11, 12), wobei eine Giessrollenkuhlung vorgesehen ist, dadurch gekennzeichnet, dass nur eine der beiden Giessrollen (11, 12) oder die eine Giessrolle unterschiedlich im Verhältnis zu der anderen Giessrolle gekühlt wird.1. A method for producing a metal strip by continuously pouring molten metal between two casting rolls (11, 12) arranged in parallel and forming a casting gap (6), wherein casting roll cooling is provided, characterized in that only one of the two casting rolls (11, 12) or one casting roll is cooled differently in relation to the other casting roll.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Giessrollen (11, 12) an ihren Aussenmanteln mit in einem bestimmten Verhältnis zueinander stehenden Kühlintensitäten gekühlt werden. 2. The method according to claim 1, characterized in that the two casting rolls (11, 12) are cooled on their outer jackets with cooling intensities in a certain relationship to one another.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zusätzlich elektromagnetische Strömungen in der Metallschmelze erzeugt werden.3. The method according to claim 1 or 2, characterized in that electromagnetic currents are additionally generated in the molten metal.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Kühlleistung/en für die eine und/oder die andere Giessrolle (11, 12) während dem Giessen insbesondere bei sich verändernden Giess- parametern, wie beispielsweise bei sich ändernden Temperaturen der Giessrollenoberflächen oder der Metallschmelze, durch entsprechende Steuerungsmittel gesteuert oder geregelt werden.4. The method according to any one of claims 1 to 3, characterized in that the cooling capacity / s for one and / or the other casting roll (11, 12) during the casting, in particular with changing casting parameters, such as, for example, with changing temperatures the cast roller surfaces or the molten metal can be controlled or regulated by appropriate control means.
5. Rollen-Bandgiessmaschine zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, mit zwei parallel zueinander angeordneten Giessrollen, und mit Mitteln zur Giessrollenkuhlung, dadurch gekennzeichnet, dass eine der Giessrollen (11, 12) allein oder zumindest wesentlich stärker als die andere Giessrolle kühlbar ist.5. Roller band casting machine for performing the method according to one of claims 1 to 4, with two casting rollers arranged parallel to one another, and with means for casting roller cooling, characterized in that one of the casting rollers (11, 12) alone or at least substantially stronger than the other Casting roll is coolable.
6. Rollen-Bandgiessmaschine nach Anspruch 5, dadurch gekennzeichnet, dass eine der Giessrollen aus einem feuerfesten Material besteht oder mit einem feuerfesten Material beschichtet ist.6. Roller band casting machine according to claim 5, characterized in that one of the casting rollers consists of a refractory material or is coated with a refractory material.
7. Rollen-Bandgiessmaschine nach Anspruch 6, dadurch gekennzeichnet, dass das feuerfeste Material aus einem keramischen Stoff besteht. 7. Roll band casting machine according to claim 6, characterized in that the refractory material consists of a ceramic material.
PCT/EP2003/010037 2002-10-24 2003-09-10 Method and roll-type continuous casting machine for the production of a metal strip WO2004037466A1 (en)

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CH1790/02 2002-10-24
CH17902002 2002-10-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927501A (en) * 2018-07-20 2018-12-04 山东海瑞得新材料科技有限公司 A kind of Fe-based amorphous band and preparation method thereof that lamination coefficient is high

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314179A2 (en) * 1987-10-29 1989-05-03 Sumitomo Heavy Industries, Ltd Casting apparatus using twin belt caster
JPH01254356A (en) * 1987-12-23 1989-10-11 Sumitomo Metal Ind Ltd Continuous casting method by belt caster
JPH02290651A (en) * 1989-04-27 1990-11-30 Nippon Steel Corp Method and apparatus for continuously casting cast strip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314179A2 (en) * 1987-10-29 1989-05-03 Sumitomo Heavy Industries, Ltd Casting apparatus using twin belt caster
JPH01254356A (en) * 1987-12-23 1989-10-11 Sumitomo Metal Ind Ltd Continuous casting method by belt caster
JPH02290651A (en) * 1989-04-27 1990-11-30 Nippon Steel Corp Method and apparatus for continuously casting cast strip

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 006 (M - 916) 9 January 1990 (1990-01-09) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 061 (M - 1081) 13 February 1991 (1991-02-13) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927501A (en) * 2018-07-20 2018-12-04 山东海瑞得新材料科技有限公司 A kind of Fe-based amorphous band and preparation method thereof that lamination coefficient is high

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