EP0422056B1 - Process and installation for manufacturing a metal strip having a thickness less than or equal to 10 mm - Google Patents

Process and installation for manufacturing a metal strip having a thickness less than or equal to 10 mm Download PDF

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Publication number
EP0422056B1
EP0422056B1 EP89907154A EP89907154A EP0422056B1 EP 0422056 B1 EP0422056 B1 EP 0422056B1 EP 89907154 A EP89907154 A EP 89907154A EP 89907154 A EP89907154 A EP 89907154A EP 0422056 B1 EP0422056 B1 EP 0422056B1
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EP
European Patent Office
Prior art keywords
strip
plastic deformation
thickness
takes place
plant
Prior art date
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EP89907154A
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German (de)
French (fr)
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EP0422056A1 (en
Inventor
Friedrich Nordmeyer
Ingo Nix
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SUNDWIGER EISENHUETTE MASCHINENFABRIK GMBH & CO.
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Sundwiger Eisenhuette Maschinenfabrik & Co GmbH
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Application filed by Sundwiger Eisenhuette Maschinenfabrik & Co GmbH filed Critical Sundwiger Eisenhuette Maschinenfabrik & Co GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm rolling

Definitions

  • the tape has an uneven structure in this production. Especially in the case of alloys with a multi-phase solidification structure, dendrites extend from the edge zones to the middle of the strand. This unwanted microstructure cannot be removed by subsequent rolling alone. It is therefore customary, after casting, to temporarily store the strip and to subject it to a structure-refining treatment in a separate process.
  • the invention has for its object to provide a method with which a metal strip with a fine-grained or homogenized structure can be produced continuously.
  • the invention is also based on the object of creating a suitable system.
  • the invention is based on a method for producing a metal strip with a thickness of up to 10 mm, in which a molten metal is cast into a strip and the strip is thereby subjected to a plastic deformation and heat treatment and then passes through a cooling section.
  • a method of this type is part of the generally known prior art.
  • the strip is cast in a thickness close to the final dimensions and that the plastic deformation of the strip takes place at an elevated temperature which enables a change in structure and almost without a reduction in thickness.
  • the temperature at which the plastic deformation takes place is lower than the temperature at which an annealing treatment then takes place.
  • the plastic deformation can take place simultaneously with the annealing treatment.
  • the annealing treatment should take place in a protective gas atmosphere. Even if the annealing treatment does not take place simultaneously with the plastic deformation and therefore at a lower temperature, it is advantageous if the plastic deformation also takes place in a protective gas atmosphere.
  • the plastic deformation without a substantial reduction in the thickness of the strip is preferably carried out by repeatedly bending the strip around axes parallel to the strip plane and perpendicular to the strip running direction.
  • the invention further relates to a system for producing the metal strip with a thickness of up to 10 mm.
  • a plant consists of a plant part arranged in a line, namely a belt casting device, a heat treatment line and / or heat compensation line, a forming unit which plastically deforms the band and a cooling line arranged at the end of the line.
  • a plant of this type belongs to the general state of the art.
  • the deformation unit is set up for a passage of the strip for an at least two-fold bending of the strip in the opposite direction at an elevated temperature which enables a change in structure.
  • the temperature compensation section is preferably arranged in front of the deformation unit. If the heat treatment section is set up for annealing, it is either integrated into the deformation unit or arranged downstream of it.
  • the parts of the plant should be thermally separated from one another.
  • the temperatures to which the strip is to be set in the temperature compensation section and the heat treatment section depend on the material of the strip and on whether the strip is to be subjected to a recrystallization annealing or whether it is to be Structural homogenization should be annealed. If a fine-grain structure is sought for steel, for example, a temperature range of 700 to 1000 o C has proven itself for the recrystallization annealing. In the case of annealing for the purpose of structural homogenization, however, the annealing should take place at a temperature above 1000 o C.
  • Molten metal is applied from a casting vessel 1 filled with molten metal via an outlet gap with an adjustable gap width to the smooth, cooled outer surface of a rotating cooling wheel 2.
  • the thickness of the band 3 which solidifies on the lateral surface can be adjusted to a thickness of up to 10 mm.
  • Forming a loop, the band 3 reaches the area of a first pair of rollers 4.
  • the casting vessel 1 with its outlet gap, the cooling wheel 2 and the pair of rollers 4 are accommodated in a chamber 5 which is closed to the outside atmosphere and filled with protective gas.
  • a line of the first chamber 5 accommodating the casting device 1, 2 there are further chambers 6, 7, 8 which are closed off from the outside atmosphere and in which the strip material is subjected to various treatments.
  • the order of the chambers 6 and 7 is different in the two exemplary embodiments.
  • the strip material is brought to a temperature dependent on the strip material in the chamber 6, which temperature is favorable for the plastic deformation in the subsequent chamber 7.
  • the band 3 is meandered over rollers 9 and plastically deformed, which are arranged between a pair of brake rollers 10 and a pair of traction rollers 11.
  • This type of treatment of tape 3 corresponds to the treatment of one Tape in a straightener.
  • recrystallization annealing can be carried out, which, however, is then preferably carried out in a protective gas atmosphere.
  • the strip is then cooled in accordance with a predetermined program.
  • the treatment takes place in the same chamber 7 immediately after casting the strip in chamber 5.
  • the plastic deformation is not associated with a recrystallization annealing, rather the temperature of the chamber 7 is increased to that for the plastic Deformation set favorable temperature.
  • the treatment should also be carried out under a protective gas atmosphere.
  • a recrystallization annealing takes place in the chamber 6 only after this plastic deformation, preferably under a protective gas atmosphere.
  • the chamber 8 is then cooled again according to a program dependent on the strip material.
  • the invention differs from the prior art in that the strip produced by casting is continuously treated further, so that at the end of the treatment a strip is obtained which, in contrast to the strips produced according to the prior art, has a fine-grained cross-section over its entire cross section or homogenized structure, depending on the treatment temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The invention concerns a process and an installation for manufacturing a metal strip with a fine-grained or uniform structure and having a thickness less than or equal to 10 mm. Immediately after casting, the strip undergoes a second treatment, namely adjustment of the treatment temperature and plastic deformation of the strip, virtually without any reduction in thickness, and possible subsequent annealing and cooling in function of the nature of the strip material. This continuous production of a metal strip which has the desired final dimensions and contains no structure undesirable for subsequent use is obtained by simple means and without expensive rolling.

Description

Durch Gießen eines Stranges oder Bandes auf einer gekühlten Walze lassen sich dünne Metallbänder unbegrenzter Länge herstellen.By casting a strand or strip on a cooled roll, thin metal strips of unlimited length can be produced.

Es hat sich gezeigt, daß bei dieser Herstellung das Band ein ungleichmäßiges Gefüge hat. Insbesondere bei legierungen mit mehrphasiger Erstarrungsstruktur entstehen von den Randzonen bis zur Strangmitte reichende Dendriten. Diese unerwünschte Gefügeausbildung ist allein durch nachfolgendes Walzen nicht zu beseitigen. Deshalb ist es üblich, nach dem Gießen das Band zwischenzulagern und in einem getrennten Prozeß einer Behandlung zur Gefügeverfeinerung zu unterwerfen.It has been shown that the tape has an uneven structure in this production. Especially in the case of alloys with a multi-phase solidification structure, dendrites extend from the edge zones to the middle of the strand. This unwanted microstructure cannot be removed by subsequent rolling alone. It is therefore customary, after casting, to temporarily store the strip and to subject it to a structure-refining treatment in a separate process.

Es ist auch bekannt, in einer Linie mit dem Gießen des Bandes mit größerer Dicke als deren gewünschte Enddicke auf die gewünschte Enddicke herunterzuwalzen. Der Aufwand für das Walzen ist erheblich.It is also known to roll in line with the casting of the strip of greater thickness than its desired final thickness to the desired final thickness. The effort for rolling is considerable.

Schließlich hat sich beim Bandgießen gezeigt, daß ein nichthomogenes Gefüge entsteht. Ein Ausgleich von Seigerungen ist deshalb notwendig.Finally, band casting has shown that a non-homogeneous structure is created. A compensation of segregations is therefore necessary.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem ein Metallband mit feinkörnigem oder homogenisiertem Gefüge kontinuierlich hergestellt werden kann. Der Erfindung liegt ferner die Aufgabe zugrunde, eine dafür geeignete Anlage zu schaffen.The invention has for its object to provide a method with which a metal strip with a fine-grained or homogenized structure can be produced continuously. The invention is also based on the object of creating a suitable system.

Die Erfindung geht von einem Verfahren zum Herstellen eines Metallbandes mit einer Dicke von bis zu 10 mm aus, bei dem eine Metallschmelze zu einem Band gegossen wird und in einer Linie damit das Band einer plastischen Verformung und Wärmebehandlung unterworfen wird und anschließend eine Abkühlstrecke durchläuft. Ein Verfahren dieser Art gehört zum allgemein bekannten Stand der Technik.The invention is based on a method for producing a metal strip with a thickness of up to 10 mm, in which a molten metal is cast into a strip and the strip is thereby subjected to a plastic deformation and heat treatment and then passes through a cooling section. A method of this type is part of the generally known prior art.

Bei dem erfindungsgemäßen Verfahren ist vorgesehn, daß das Band in endabmessungsnaher Dicke gegossen wird und die plastische Verformung des Bandes bei einer erhöhten, eine Gefügeänderung ermöglichenden Temperatur und nahezu ohne Dickenverminderung erfolgt.In the method according to the invention, it is provided that the strip is cast in a thickness close to the final dimensions and that the plastic deformation of the strip takes place at an elevated temperature which enables a change in structure and almost without a reduction in thickness.

Nach einer Ausgestaltung der Erfindung ist die Temperatur, bei der die plastische Verformung stattfindet, niedriger als die Temperatur, bei der danach eine Glühbehandlung stattfindet. Alternativ kann die plastische Verformung auch gleichzeitig mit der Glühbehandlung stattfinden. Die Glühbehandlung sollte in einer Schutzgasatmosphäre stattfinden. Auch dann, wenn die Glühbehandlung nicht gleichzeitig mit der plastischen Verformung und damit bei niedrigerer Temperatur stattfindet, ist von Vorteil, wenn auch die plastische Verformung in einer Schutzgasatmosphäre stattfindet.According to one embodiment of the invention, the temperature at which the plastic deformation takes place is lower than the temperature at which an annealing treatment then takes place. Alternatively, the plastic deformation can take place simultaneously with the annealing treatment. The annealing treatment should take place in a protective gas atmosphere. Even if the annealing treatment does not take place simultaneously with the plastic deformation and therefore at a lower temperature, it is advantageous if the plastic deformation also takes place in a protective gas atmosphere.

Die plastische Verformung ohne wesentliche Verminderung der Dicke des Bandes erfolgt vorzugsweise durch mehrfaches Biegen des Bandes um zur Bandebene parallele und zur Bandlaufrichtung senkrechte Achsen.The plastic deformation without a substantial reduction in the thickness of the strip is preferably carried out by repeatedly bending the strip around axes parallel to the strip plane and perpendicular to the strip running direction.

Die Erfindung bezieht sich ferner auf eine Anlage zum Herstellen des Metallbandes mit einer Dicke bis zu 10 mm. Eine solche Anlage besteht aus einer in einer Linie angeordneten Anlageteilen, und zwar einer Bandgießvorrichtung, einer Wärmebehandlungsstrecke und/oder Wärmeausgleichsstrecke, einer Werformungseinheit, die das Band plastisch verformt und einer am Ende der Linie angeordneten Abkühlstrecke. Eine Anlage dieser Art gehört zum allgemeinen Stand der Technik.The invention further relates to a system for producing the metal strip with a thickness of up to 10 mm. Such a plant consists of a plant part arranged in a line, namely a belt casting device, a heat treatment line and / or heat compensation line, a forming unit which plastically deforms the band and a cooling line arranged at the end of the line. A plant of this type belongs to the general state of the art.

Bei der erfindungsgemäßen Anlage ist vorgesehen, daß die Verformungseinheit für einen Durchlauf des Bandes für eine mindestens zweimalige Biegung des Bandes in entgegengesetzter Richtung bei einer erhöhten, eine Gefügeänderung ermöglichenden Temperatur eingerichtet ist. Nach Ausgestaltungen der Erfindung ist die Temperaturausgleichsstrecke vorzugsweise vor der Verformungseinheit angeordnet. Sofern die Wärmebehandlungsstrecke für eine Glühung eingerichtet ist, ist sie entweder in die Verformungseinheit integriert oder ihr nachgeordnet.In the system according to the invention it is provided that the deformation unit is set up for a passage of the strip for an at least two-fold bending of the strip in the opposite direction at an elevated temperature which enables a change in structure. According to embodiments of the invention, the temperature compensation section is preferably arranged in front of the deformation unit. If the heat treatment section is set up for annealing, it is either integrated into the deformation unit or arranged downstream of it.

Um die erforderlichen Behandlungen in den einzelnen Anlageteilen optimal durchführen zu können, sollten die Anlageteile voneinander thermisch getrennt sein.In order to be able to optimally carry out the required treatments in the individual parts of the plant, the parts of the plant should be thermally separated from one another.

Die Temperaturen, auf die das Band in der Temperaturausgleichsstrecke und der Wärmebehandlungsstrecke einzustellen sind, hängen von dem Material des Bandes und davon ab, ob das Band einer Rekristallisationsglühung unterworfen werden soll, oder ob es zur Gefügehomogenisierung geglüht werden soll. Wird ein feinkörniges Gefüges beispielsweise bei Stahl angestrebt, hat sich ein Temperaturbereich von 700 bis 1000 oC zur Rekristallisationsglühung bewährt. Bei einer Glühung zum Zwecke der Gefügehomogenisierung sollte dagegen die Glühung bei einer Temperatur oberhalb 1000 oC erfolgen.The temperatures to which the strip is to be set in the temperature compensation section and the heat treatment section depend on the material of the strip and on whether the strip is to be subjected to a recrystallization annealing or whether it is to be Structural homogenization should be annealed. If a fine-grain structure is sought for steel, for example, a temperature range of 700 to 1000 o C has proven itself for the recrystallization annealing. In the case of annealing for the purpose of structural homogenization, however, the annealing should take place at a temperature above 1000 o C.

Im folgenden wird die Erfindung anhand einer Zeichnung näher erläutert, die schematisch zwei Anlagen in Seitenansicht zeigt, mit denen die beiden alternativen Verfahren durchgeführt werden können.The invention is explained in more detail below with the aid of a drawing which schematically shows two plants in side view with which the two alternative methods can be carried out.

Aus einem mit schmelzflüssigem Metall gefüllten Gießgefäß 1 wird schmelzflüssiges Metall über einen Austrittsspalt mit einstellbarer Spaltbreite auf die glatte, gekühlte Mantelfläche eines sich drehenden Kühlrades 2 aufgetragen. Durch Einstellung der Breite des Austrittsspaltes und der Laufgeschwindigkeit des Kühlrades 2 läßt sich die Dicke des auf der Mantelfläche erstarrenden Bandes 3 auf bis zu 10 mm Dicke einstellen. Unter Bildung einer Schleife gelangt das Band 3 in den Bereich eines ersten Rollenpaares 4. Das Gießgefäß 1 mit seinem Austrittsspalt, das Kühlrad 2 und das Rollenpaar 4 sind in einer zur Außenatmosphäre abgeschlossenen, mit Schutzgas gefüllten Kammer 5 untergebracht.Molten metal is applied from a casting vessel 1 filled with molten metal via an outlet gap with an adjustable gap width to the smooth, cooled outer surface of a rotating cooling wheel 2. By adjusting the width of the outlet gap and the running speed of the cooling wheel 2, the thickness of the band 3 which solidifies on the lateral surface can be adjusted to a thickness of up to 10 mm. Forming a loop, the band 3 reaches the area of a first pair of rollers 4. The casting vessel 1 with its outlet gap, the cooling wheel 2 and the pair of rollers 4 are accommodated in a chamber 5 which is closed to the outside atmosphere and filled with protective gas.

In einer Linie der die Gießvorrichtung 1,2 aufnehmenden ersten Kammer 5 sind weitere, zur Außenatmosphäre abgeschlossene Kammern 6,7,8 angeordnet, in denen das Bandmaterial verschiedenen Behandlungen unterworfen wird. Die Reihenfolge der Kammern 6 und 7 ist bei beiden Ausführungsbeispielen verschieden.In a line of the first chamber 5 accommodating the casting device 1, 2 there are further chambers 6, 7, 8 which are closed off from the outside atmosphere and in which the strip material is subjected to various treatments. The order of the chambers 6 and 7 is different in the two exemplary embodiments.

Beim Ausführungsbeispiel der Figur 1 wird in der Kammer 6 das Bandmaterial auf eine bandmaterialabhängige Temperatur gebracht, die für die plastische Verformung in der anschließenden Kammer 7 günstig ist. In der Kammer 7 wird das Band 3 mäanderförmig über Rollen 9 geführt und dabei plastisch verformt, die zwischen einem Bremsrollenpaar 10 und einem Zugrollenpaar 11 angeordnet sind. Diese Art der Behandlung des Bandes 3 entspricht der Behandlung eines Bandes in einem Richtapparat. Verbunden mit dieser plastischen Verformung kann eine Rekristallisationsglühung erfolgen, die dann allerdings vorzugsweise in einer Schutzgasatmosphäre erfolgt. In der anschließenden Kammer 8 erfolgt dann die Abkühlung des Bandes nach einem vorgegebenen Programm.In the exemplary embodiment in FIG. 1, the strip material is brought to a temperature dependent on the strip material in the chamber 6, which temperature is favorable for the plastic deformation in the subsequent chamber 7. In the chamber 7, the band 3 is meandered over rollers 9 and plastically deformed, which are arranged between a pair of brake rollers 10 and a pair of traction rollers 11. This type of treatment of tape 3 corresponds to the treatment of one Tape in a straightener. In connection with this plastic deformation, recrystallization annealing can be carried out, which, however, is then preferably carried out in a protective gas atmosphere. In the subsequent chamber 8, the strip is then cooled in accordance with a predetermined program.

Beim Ausführungsbeispiel der Figur 2 erfolgt die Behandlung in der gleichen Kammer 7 unmittelbar nach dem Gießen des Bandes in der Kammer 5. In diesem Fall ist die plastische Verformung aber nicht mit einer Rekristallisationsglühung verbunden, vielmehr wird die Temperatur der Kammer 7 auf eine für die plastische Verformung günstige Temperatur eingestellt. Aber auch hier sollte die Behandlung unter einer Schutzgasatmosphäre erfolgen. Erst nach dieser plastischen Verformung erfolgt in der Kammer 6 eine Rekristallisationsglühung, vorzugsweise unter Schutzgasatmosphäre. In der Kammer 8 wird dann wieder nach einem bandmaterialabhängigen Programm abgekühlt.In the exemplary embodiment in FIG. 2, the treatment takes place in the same chamber 7 immediately after casting the strip in chamber 5. In this case, however, the plastic deformation is not associated with a recrystallization annealing, rather the temperature of the chamber 7 is increased to that for the plastic Deformation set favorable temperature. However, the treatment should also be carried out under a protective gas atmosphere. A recrystallization annealing takes place in the chamber 6 only after this plastic deformation, preferably under a protective gas atmosphere. The chamber 8 is then cooled again according to a program dependent on the strip material.

Die Erfindung unterscheidet sich von dem Stand der Technik dadurch, daß das durch Gießen hergestellte Band kontinuierlich weiterbehandelt wird, so daß am Ende der Behandlung ein Band erhalten wird, das im Gegensatz zu den nach dem Stand der Technik hergestellten Bändern über seinen gesamten Querschnitt ein feinkörniges oder homogenisiertes Gefüge, je nach Behandlungstemperatur hat.The invention differs from the prior art in that the strip produced by casting is continuously treated further, so that at the end of the treatment a strip is obtained which, in contrast to the strips produced according to the prior art, has a fine-grained cross-section over its entire cross section or homogenized structure, depending on the treatment temperature.

Claims (10)

  1. Process for the manufacture of a metal strip (3) having a thickness of up to 10mm, in which molten metal is cast to give a strip (3) and, on one continuing line, the strip (3) is subjected to plastic deformation and heat treatment and then passes through a cooling section (8), characterised in that the strip (3) is cast in a thickness close to the final dimension (1, 2) and that the plastic deformation (7) of the strip (3) is carried out at an elevated temperature which allows a structural change, and almost without a reduction in thickness.
  2. Process according to Claim 1, characterised in that the temperature, at which the plastic deformation (7, 9) takes place, is lower than the temperature at which a following annealing treatment (Figure 2, 6) takes place.
  3. Process according to Claim 1, characterised in that the plastic deformation (7) takes place simultaneously with an annealing treatment (Figure 19).
  4. Process according to one of Claims 1 to 3, characterised in that the annealing treatment (6, 7) takes place in an atmosphere of blanketing gas.
  5. Process according to Claim 1 to 4, characterised in that the plastic deformation (9) takes place in an atmosphere (7) of blanketing gas.
  6. Process according to one of Claims 1 to 5, characterised in that the plastic deformation (9) is effected virtually without reduction in the thickness of the strip (3) by repeated bending of the strip (3) about axes parallel to the plane of the strip and perpendicular to the longitudinal direction of the strip.
  7. Plant for the manufacture of a metal strip having a thickness of up to 10mm, consisting of plant sections arranged in one line, namely a strip-casting device (1, 2), a heat treatment section (6) and/or heat equalisation section, a deformation unit (9 - 11) which plastically deforms the strip (3), and a cooling section (8) located at the end of the line, characterised in that the deformation unit (9) is equipped for passing the strip through for bending it at least twice in opposite directions at an elevated temperature which allows a structural change.
  8. Plant according to Claim 7, characterised in that the heat treatment section (6) is located in front of the deformation unit (9 - 11).
  9. Plant according to Claim 7, characterised in that the heat treatment section (6) is either integrated into the deformation unit (9 - 11) or follows it.
  10. Plant according to one of Claims 7 to 9, characterised in that the individual plant sections (5, 6, 7, 8) are thermally separated from one another.
EP89907154A 1988-06-30 1989-06-24 Process and installation for manufacturing a metal strip having a thickness less than or equal to 10 mm Revoked EP0422056B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89907154T ATE81314T1 (en) 1988-06-30 1989-06-24 METHOD AND PLANT FOR PRODUCTION OF A METAL STRIP WITH A THICKNESS OF UP TO 10 MM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822063 1988-06-30
DE3822063 1988-06-30

Publications (2)

Publication Number Publication Date
EP0422056A1 EP0422056A1 (en) 1991-04-17
EP0422056B1 true EP0422056B1 (en) 1992-10-07

Family

ID=6357606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89907154A Revoked EP0422056B1 (en) 1988-06-30 1989-06-24 Process and installation for manufacturing a metal strip having a thickness less than or equal to 10 mm

Country Status (6)

Country Link
EP (1) EP0422056B1 (en)
JP (1) JPH03505704A (en)
AT (1) ATE81314T1 (en)
DE (2) DE58902433D1 (en)
RU (1) RU1839682C (en)
WO (1) WO1990000100A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO1998052706A1 (en) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Casting cylinder for thin-band continuous casting installation

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
US5503217A (en) * 1990-07-23 1996-04-02 Davy Mckee (Sheffield) Limited Method of manufacturing metal strip
CA2164343C (en) 1994-04-04 2002-01-01 Yoshikazu Matsumura Twin-roll type continuous casting method and device
US6622778B1 (en) 2000-07-12 2003-09-23 Danieli Technology, Inc. Method for the direct production of scale-free thin metal strip
DE102004062636B4 (en) 2004-12-21 2007-05-24 Salzgitter Flachstahl Gmbh Device for horizontal strip casting of steel
AU2009326518A1 (en) * 2008-12-09 2011-06-30 Sms Siemag Ag Method for producing strips of metal, and production line for performing the method

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US255674A (en) * 1882-03-28 Samuel d

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US2666003A (en) * 1949-02-18 1954-01-12 Bethlehem Steel Corp Treating strip
SE448381B (en) * 1978-09-19 1987-02-16 Tsuya Noboru SET TO MAKE A THIN BAND OF SILICONE, THIN BAND AND APPLICATION
US4296919A (en) * 1980-08-13 1981-10-27 Nippon Steel Corporation Apparatus for continuously producing a high strength dual-phase steel strip or sheet
GB2158746A (en) * 1984-05-14 1985-11-20 Olin Corp Apparatus and process for rolling spin cast strip
DE3626638A1 (en) * 1986-08-06 1988-02-18 Sundwiger Eisen Maschinen DEVICE FOR PRODUCING A CAST METAL STRIP WITH AMORPH AND / OR FINE CRYSTALLINE STRUCTURE

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US255674A (en) * 1882-03-28 Samuel d

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Patent Abstracts of Japan vol 9, nr 316 (M-438)(2039) 12 December 185 & JP-A-60152336 (IG GIJUTSU KENKYUSHO K.K.) 10 August 1985, see abstract *
Patent Abstracts of Japan, vol 12, nr 267 (M-722) (3114), 26 July 1988 & JP-A-6349350 (KAWASAKI STEEL CORP) 2 March 188, see abstract *
Patent Abstracts of Japan, vol 5, nr 101 (M-76)(773), 30 June 1981 & JP-A-5645253 (PIONEER K.K.) 24 April 1981, see abstract *

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO1998052706A1 (en) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Casting cylinder for thin-band continuous casting installation

Also Published As

Publication number Publication date
DE3990711C1 (en) 1993-03-25
RU1839682C (en) 1993-12-30
JPH03505704A (en) 1991-12-12
ATE81314T1 (en) 1992-10-15
DE58902433D1 (en) 1992-11-12
WO1990000100A1 (en) 1990-01-11
DE3990711D2 (en) 1991-04-25
EP0422056A1 (en) 1991-04-17

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