EP1455975A1 - Method and device for the production of a trimmed metal strip - Google Patents

Method and device for the production of a trimmed metal strip

Info

Publication number
EP1455975A1
EP1455975A1 EP02793060A EP02793060A EP1455975A1 EP 1455975 A1 EP1455975 A1 EP 1455975A1 EP 02793060 A EP02793060 A EP 02793060A EP 02793060 A EP02793060 A EP 02793060A EP 1455975 A1 EP1455975 A1 EP 1455975A1
Authority
EP
European Patent Office
Prior art keywords
strip
edges
cooling
band
trimming
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
EP02793060A
Other languages
German (de)
French (fr)
Other versions
EP1455975B1 (en
Inventor
Gerald Hohenbichler
Jean-Michel Damasse
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau 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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP1455975A1 publication Critical patent/EP1455975A1/en
Application granted granted Critical
Publication of EP1455975B1 publication Critical patent/EP1455975B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • 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
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49989—Followed by cutting or removing material

Definitions

  • the invention relates to the continuous casting of metals and, more particularly, the casting of strips of small thickness directly from liquid metal.
  • the casting of a metal strip is usually carried out on a plant for so-called "two-roll casting".
  • Such plants comprise, as main elements which form the mold and in which the strip is solidified, two rolls with essentially horizontal axes which are arranged opposite one another and around their respective ones
  • These rollers are strongly cooled on the inside, and their outer surfaces define a mold with movable walls, on which the belt begins to solidify in the form of two strand shells that develop further from the roller surfaces.
  • These strand shells essentially run together at the level of the "kissing point", ie the zone in which the surfaces of the rolls are closest to and away from each other by a distance equal to the thickness of the desired strip to form the strip that is continuously drawn from the mold.
  • the casting chamber is laterally delimited by two refractory walls, which are placed against the flat ends of the rolls or are kept at a very short distance from them in order to avoid metal leaks. This method is described in more detail, for example, in document EP-A-0698433.
  • the strips cast by these processes are generally designed to be cold rolled to obtain sheets of common thickness. Before that, they can also be subjected to hot rolling, which is intended to change the microstructure and to close porosities that are at the core of the strip Can form solidification. From an economic point of view, it is particularly advantageous to carry out this hot rolling with a roll stand set up on the transport path of the strip just cast.
  • the strips cast in this way must generally be subjected to band edge trimming to a width of approximately 15 mm before they are cold rolled or, preferably, before their first winding after casting.
  • band edges are formed from strand shell sections which have solidified under different conditions than those which have led to the strengthening of the more central parts of the band, in particular due to the proximity of the side closure walls which tend to cool the metal more than normal.
  • Possible differences between the cooling effects caused by the rollers between their edges and their more central parts can also occur.
  • the cooling can be stronger at the edges than in the middle and vice versa, depending on the design of the rollers.
  • the strip edges can also have an irregular shape, which in the later rolling processes leads to inhomogeneities in the mechanical properties of the sheets, in particular due to the local differences in the degree of reduction obtained. If, on the other hand, liquid metal leakage occurs between the casting rolls and the side sealing walls, the strip edges have unevenness which should be eliminated before the cold rolling in order to avoid impairment of the surface of the rolling cylinders.
  • edges of the tape are trimmed at a given time when the tapes are processed with the aid of scissors or any other tool that is conventionally used in machines for processing tapes which have been produced by conventional methods.
  • the aim of the invention is to propose a method and an apparatus which make it possible to carry out a satisfactory trimming of the band edges, even if the band edges are at a higher temperature than is initially desirable.
  • the invention relates to a method for producing a metal strip from a strip cast directly from liquid metal, in which a
  • Trimming of the strip edges is carried out, characterized in that the strip edges are cooled in a controlled manner before trimming in order to make them more fragile than the rest of the strip.
  • This metal can be steel, and in this case the cooling of the strip edges begins at a temperature of 950 to 1100 ° C.
  • the band edges are preferably trimmed immediately after their controlled cooling.
  • the band edges can be trimmed before the tape is wound up.
  • the controlled cooling of the strip edges can be carried out after the strip has been hot-rolled, which itself is reheated by inductive
  • the controlled cooling of the strip edges is preferably carried out in-line with the casting of the strip.
  • the invention also relates to a system for processing thin metal strips which come from a system for casting thin strips directly from liquid metal, characterized in that it comprises a system for controlled exclusive or preferred cooling of the strip edges of the strip.
  • This system for controlled cooling of the band edges of the band can be arranged in front of a system for trimming the band edges.
  • the system for controlled cooling of the strip edges of the strip can be arranged on the same processing line as the casting plant for thin strips.
  • the system for controlled cooling of the edges can comprise ramps with spray nozzles, each of which directs a jet of cooling fluid onto one side of a strip edge.
  • the ramps can be located above and below the belt and the spray nozzles direct the jets onto the outside of the belt.
  • the ramps can be arranged to the side of the belt, the spray nozzles direct the jets onto the narrow side of the belt, and the system for controlled cooling of the edges also includes barriers which are in sliding contact with the belt surface and each delimit a section of the width of the belt edges, which represents the effective range of the cooling fluid.
  • the invention is to cool the edges of the tape strongly before trimming them. This cooling takes place by spraying a fluid onto a width which corresponds to the width of the region to be trimmed.
  • FIG. 1 shows schematically in perspective (FIG. 1a) a continuous casting installation for thin strips, which is provided with a device for trimming the strip edges, in front of which a system for cooling the strip edges (FIG. 1b) is arranged;
  • - Figure 2 shows a variant of the system for cooling the strip edges.
  • FIG. 1a The example of a casting plant for strips made of metal, in particular steel, which is shown in FIG. 1a, conventionally comprises two casting rolls 1, 1 ', which are cooled on the inside and driven in rotation in the opposite direction about their axes in a horizontal position.
  • Lateral closure walls 2, 2 ' which are placed between the flat end faces 3, 3' of the rollers 1, 1 ', delimit with the side walls of the rollers 1, 1' a casting space into which liquid steel is continuously produced by means not shown, such as, for example fireproof pipe connected to a manifold is poured.
  • solidification and removal along the arrows 5 of a band 6 with a thickness of generally 1 to 10 mm are achieved.
  • the strip 6 passes in a known manner through an induction furnace 7, which is intended to reheat it before it enters a hot rolling stand 8, which reduces the thickness of the strip 6, for example by 10% or more.
  • the strip edges 9, 9 'of the strip 6 are then subjected to a strongly controlled cooling, while the rest of the strip 6 continues to cool naturally or under the action of a substantially more moderate controlled cooling.
  • Strip edges 9 9, 9 'of the strip 6 are to be understood as sections which each extend from one of the edges of the strip 6 to a width which can reach 25 mm, and then in one step, which corresponds to the cold rolling of the strip 6 preceded, trimmed or trimmed.
  • this trimming takes place immediately after the controlled cooling and before the tape 6 is wound up.
  • the system for controlled cooling of ramps
  • the fluid runs off to the central area of the belt Avoided tape, in that a lock 13, 13 'is arranged in sliding contact with the surface thereof, which strongly limits the effective range of the cooling fluid to a section 14, 14' of the length of the tape edges 9, 9 '.
  • this solution offers the advantage that the The surface of the central area remains free, making it easier to observe.
  • the ramps 10, 10 'are thus at a distance from the radiation emanating from the band 6, and therefore no complex means for protection or cooling are required in order to avoid impairing them.
  • the band passes through a system for trimming the band edges, which are represented by circular saws 15, 15 'and are preferably formed by circular knife scissors, and of course any known device which performs this function at the end Volume 6 can ensure can be used. Such devices are generally known and are used in particular in rolling mills.
  • the band 6 is then wound in the form of a bundle 16 around a coiler mandrel 17 which is rotating. The wound bundle can then be conveyed to the plant which ensures the further treatment of the strip 6, for example cold rolling, annealing pickling which precedes cold rolling, etc.
  • Belt edges require more effort to perform cutting at this level than if the mechanical properties of the belt 6 were essentially homogeneous over its entire width. However, this additional effort leads to a clean cut that does not require subsequent deburring.
  • the plant according to the invention for cooling the band edges of a thin band, which was produced by continuous casting, is not necessarily arranged in-line with the casting plant. It can be arranged at any point in the production chain at which the temperature of the strip is greater than 950 ° C., so that the desired metallurgical effect for this cooling is achieved. Furthermore, it is not always necessary for the system 15, 15 'for trimming the band edges 9, 9' to immediately follow the system for cooling according to the invention, unless this cooling was not effective in so far as there is a risk of the band edges breaking 9, 9 'can occur spontaneously during the processing of the tape 6 before trimming the tape edges 9, 9'.
  • the step of cooling the band edges 9, 9 ′ can coincide with a step of controlled cooling of the entire band 6 for metallurgical reasons. During this step, a much stronger cooling is now to be carried out on the strip edges 9, 9 'than on the rest of the strip 6 in order to use the invention. In this way, there is no longer an exclusive cooling, but only a preferred cooling of the strip edges 9, 9 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Coating With Molten Metal (AREA)

Abstract

Process for trimming the edges (9, 9') of a thin metal strip (6), cast directly from molten steel (4), involves controlled cooling of the edges before trimming to make the edge zones more brittle than the remaining strip metal. Edge cooling starts at 950-1100 deg C, and edge trimming cutters (15,15') act directly after the cooling stage and before the strip is wound into a roll. Preferred Features: Edge cooling action is performed after hot rolling, where the strip has been heated by an induction heating system, or directly in-line after casting. Edge cooling action is applied by bars (10, 10') with spray jets which direct streams of a coolant fluid at the strip edges.

Description

Verfahren und Vorrichtung zur Herstellung eines besäumten MetallbandesMethod and device for producing a trimmed metal strip
Die Erfindung betrifft das Stranggießen von Metallen und genauer das Gießen von Bändern geringer Dicke direkt aus Flüssigmetall.The invention relates to the continuous casting of metals and, more particularly, the casting of strips of small thickness directly from liquid metal.
Das Stranggießen von Metallbändern, insbesondere von Bändern aus Kohlenstoffstahl oder rostfreiem Stahl, mit einigen mm Dicke, vorzugsweise Banddicken von weniger als 10 mm, direkt aus Flüssigmetall ist heute in der Literatur gut bekannt.The continuous casting of metal strips, in particular of carbon steel or stainless steel strips, with a few mm thickness, preferably strip thicknesses of less than 10 mm, directly from liquid metal is well known in the literature today.
Das Gießen eines Metallbandes erfolgt meistens auf einer Anlage zum sogenannten „Zweiwalzengießen". Solche Anlagen umfassen als Hauptelemente, die die Kokille bilden und in der sich das Band verfestigt, zwei Walzen mit im Wesentlichen horizontalen Achsen, die einander gegenüberliegend angeordnet sind und um ihre jeweiligen Achsen in entgegengesetzte Richtung drehangetrieben werden. Diese Walzen werden innen stark gekühlt, und ihre Mantelflächen definieren eine Gießform mit beweglichen Wänden, an denen die Verfestigung des Bandes in Form von zwei Strangschalen beginnt, die sich ausgehend von den Walzenoberflächen weiterentwickeln. Diese Strangschalen laufen im Wesentlichen auf Höhe des „kissing point" zusammen, d.h. der Zone, in der die Flächen der Walzen einander am nächsten und voneinander um einen Abstand entfernt sind, der der Dicke des gewünschten Bandes entspricht, um das Band zu bilden, das kontinuierlich aus der Gießform gezogen wird. Der Gießraum ist seitlich durch zwei feuerfeste Wände begrenzt, die gegen die flachen Enden der Walzen gelegt oder in einem sehr geringen Abstand zu diesen gehalten werden, um Metallleckagen zu vermeiden. Dieses Verfahren ist detaillierter beispielsweise in dem Dokument EP-A-0698433 beschrieben.The casting of a metal strip is usually carried out on a plant for so-called "two-roll casting". Such plants comprise, as main elements which form the mold and in which the strip is solidified, two rolls with essentially horizontal axes which are arranged opposite one another and around their respective ones These rollers are strongly cooled on the inside, and their outer surfaces define a mold with movable walls, on which the belt begins to solidify in the form of two strand shells that develop further from the roller surfaces. These strand shells essentially run together at the level of the "kissing point", ie the zone in which the surfaces of the rolls are closest to and away from each other by a distance equal to the thickness of the desired strip to form the strip that is continuously drawn from the mold. The casting chamber is laterally delimited by two refractory walls, which are placed against the flat ends of the rolls or are kept at a very short distance from them in order to avoid metal leaks. This method is described in more detail, for example, in document EP-A-0698433.
Es ist auch vorstellbar, dünne Metallbänder zu erzeugen, indem das Flüssigmetall auf die in Drehung befindliche Manteloberfläche einer einzigen gekühlten Gießwalze aufgebracht wird, auf der sich das Metall verfestigt. So kann ein Band mit einer im Allgemeinen geringeren Dicke als durch Gießen zwischen zwei Walzen erhalten werden.It is also conceivable to produce thin metal strips by applying the liquid metal to the rotating surface of a single cooled casting roll, on which the metal solidifies. Thus, a strip with a thickness generally less than that obtained by casting between two rolls can be obtained.
Die durch diese Verfahren gegossenen Bänder sind im Allgemeinen dazu bestimmt, kaltgewalzt zu werden, um Bleche mit üblichen Dicken zu erhalten. Zuvor können sie auch einem Warmwalzen unterzogen werden, das dazu bestimmt ist, Gefügestrukturen zu verändern und Porositäten zu schließen, die sich im Kern des Bandes bei seiner Verfestigung bilden können. Aus wirtschaftlicher Sicht ist es besonders vorteilhaft, dieses Warmwalzen mit einem auf dem Transportweg des soeben gegossenen Bandes aufgestellten Walzgerüstes durchzuführen.The strips cast by these processes are generally designed to be cold rolled to obtain sheets of common thickness. Before that, they can also be subjected to hot rolling, which is intended to change the microstructure and to close porosities that are at the core of the strip Can form solidification. From an economic point of view, it is particularly advantageous to carry out this hot rolling with a roll stand set up on the transport path of the strip just cast.
Die auf diese Weise gegossenen Bänder müssen im Allgemeinen vor ihrem Kaltwalzen oder auch vorzugsweise vor ihrem ersten Aufwickeln nach dem Guss einer Bandkantenbesäumung auf eine Breite von ungefähr 15 mm unterzogen werden. Diese Bandkanten sind nämlich aus Strangschalenabschnitten gebildet, die sich unter anderen Bedingungen verfestigt haben als jene, die zur Verfestigung der zentraleren Teile des Bandes geführt haben, insbesondere aufgrund der Nähe der seitlichen Verschlusswände, die dazu neigen, das Metall stärker als normal abzukühlen. Mögliche Unterschiede zwischen den von den Walzen bewirkten Abkühlungen zwischen ihren Kanten und ihren zentraleren Teilen können ebenfalls vorkommen. Die Abkühlung kann an den Kanten stärker sein als in der Mitte und umgekehrt, je nach Ausführung der Walzen. Diese Unterschiede, die beim Verfestigungs- und Abkühlungsverfahren zwischen den Kanten und dem Rest des Bandes oft schlecht steuerbar sind, verursachen oft Unterschiede in den mechanischen Eigenschaften des Bandes entlang seiner Breite. Die unter diesen Bedingungen hergestellten Bleche können somit inhomogene Eigenschaften aufweisen, was zu vermeiden ist.The strips cast in this way must generally be subjected to band edge trimming to a width of approximately 15 mm before they are cold rolled or, preferably, before their first winding after casting. This is because these band edges are formed from strand shell sections which have solidified under different conditions than those which have led to the strengthening of the more central parts of the band, in particular due to the proximity of the side closure walls which tend to cool the metal more than normal. Possible differences between the cooling effects caused by the rollers between their edges and their more central parts can also occur. The cooling can be stronger at the edges than in the middle and vice versa, depending on the design of the rollers. These differences, which are often difficult to control in the consolidation and cooling process between the edges and the rest of the tape, often cause differences in the mechanical properties of the tape along its width. The sheets produced under these conditions can therefore have inhomogeneous properties, which should be avoided.
Die Bandkanten können auch eine unregelmäßige Form aufweisen, was bei den späteren Walzvorgängen zu Inhomogenitäten in den mechanischen Eigenschaften der Bleche führt, insbesondere aufgrund der lokalen Unterschiede im erhaltenen Reduktionsgrad. Wenn andererseits Flüssigmetallleckagen zwischen den Gießwalzen und den seitlichen Verschlusswänden entstehen, weisen die Bandkanten Unebenheiten auf, die vor dem Kaltwalzen beseitigt werden sollten, um eine Beeinträchtigung der Oberfläche der Walzzylinder zu vermeiden.The strip edges can also have an irregular shape, which in the later rolling processes leads to inhomogeneities in the mechanical properties of the sheets, in particular due to the local differences in the degree of reduction obtained. If, on the other hand, liquid metal leakage occurs between the casting rolls and the side sealing walls, the strip edges have unevenness which should be eliminated before the cold rolling in order to avoid impairment of the surface of the rolling cylinders.
Aus all diesen Gründen wird ein Besäumen der Bandkanten zu einem gegebenen Zeitpunkt der Bearbeitung der Bänder mit Hilfe einer Schere oder jedes anderen Werkzeugs vorgenommen, das herkömmlicherweise bei Anlagen zur Bearbeitung von Bändern, die durch übliche Verfahren hergestellt wurden, verwendet wird.For all of these reasons, the edges of the tape are trimmed at a given time when the tapes are processed with the aid of scissors or any other tool that is conventionally used in machines for processing tapes which have been produced by conventional methods.
Im Prinzip ist es vorteilhaft, das Besäumen der Bandkanten sobald als möglich vorzunehmen, beispielsweise vor dem Aufwickeln des Bandes, das auf dessen Guss folgt. Wenn in diesem Stadium die Kanten wesentlich wärmer als der Rest des Bandes sind, besteht jedoch die Gefahr, dass sie mechanische Eigenschaften aufweisen, die sie weniger dazu befähigen, von dem Band durch die Schere völlig getrennt zu werden, insbesondere wenn die Breite der warmen Zone nicht genau mit der Breite der Kanten, die beschnitten werden sollen, übereinstimmt. Dieses Problem kann verstärkt werden, wenn in einer Linie ein Warmwalzen des Bandes vor dem Besäumen seiner Kanten vorgenommen wird. Diesem Warmwalzen geht nämlich oft ein Schritt der Wiedererwärmung des Bandes in einem Induktionsofen voraus. Bei dieser Wiedererwärmung neigen die Feldlinien dazu, sich auf die Kanten der Bänder zu konzentrieren, was zu Temperaturen an den Kanten führt, die höher sind als die Temperaturen, die am restlichen Band vorherrschen. Diese Inhomogenität bleibt nach dem Warmwalzen bestehen und macht ein korrektes Besäumen der Bandkanten anschließend schwierig.In principle, it is advantageous to trim the band edges as soon as possible, for example before winding up the band that follows its casting. If at this stage the edges are much warmer than the rest of the tape However, there is a risk that they will have mechanical properties that will make them less likely to be completely separated from the tape by the scissors, especially if the width of the warm zone is not exactly the same as the width of the edges to be trimmed. matches. This problem can be exacerbated if a line is hot rolled before the edges are trimmed. This hot rolling is often preceded by a step of reheating the strip in an induction furnace. With this reheating, the field lines tend to concentrate on the edges of the ribbons, resulting in temperatures on the edges that are higher than the temperatures prevailing on the rest of the ribbon. This inhomogeneity remains after hot rolling and subsequently makes correct trimming of the strip edges difficult.
Ziel der Erfindung ist es, ein Verfahren und eine Vorrichtung vorzuschlagen, die es ermöglichen, ein zufriedenstellendes Besäumen der Bandkanten durchzuführen, auch wenn die Bandkanten zu Beginn eine höhere Temperatur aufweisen, als dies wünschenswert ist.The aim of the invention is to propose a method and an apparatus which make it possible to carry out a satisfactory trimming of the band edges, even if the band edges are at a higher temperature than is initially desirable.
Zu diesem Zweck betrifft die Erfindung ein Verfahren zur Herstellung eines Metallbandes aus einem direkt aus Flüssigmetall gegossenen Band, bei dem einFor this purpose, the invention relates to a method for producing a metal strip from a strip cast directly from liquid metal, in which a
Besäumen der Bandkanten vorgenommen wird, dadurch gekennzeichnet, dass die Bandkanten vor dem Besäumen auf gesteuerte Weise abgekühlt werden, um sie brüchiger als den Rest des Bandes zu machen.Trimming of the strip edges is carried out, characterized in that the strip edges are cooled in a controlled manner before trimming in order to make them more fragile than the rest of the strip.
Dieses Metall kann Stahl sein, und die Abkühlung der Bandkanten beginnt in diesem Fall bei einer Temperatur von 950 bis 1100 °C.This metal can be steel, and in this case the cooling of the strip edges begins at a temperature of 950 to 1100 ° C.
Vorzugsweise wird das Beschneiden der Bandkanten sofort nach deren gesteuertem Abkühlen vorgenommen.The band edges are preferably trimmed immediately after their controlled cooling.
Das Besäumen der Bandkanten kann vor einem Aufwickeln des Bandes vorgenommen werden.The band edges can be trimmed before the tape is wound up.
Das gesteuerte Abkühlen der Bandkanten kann nach einem Warmwalzen des Bandes vorgenommen werden, dem selbst eine Wiedererwärmung des Bandes durch induktiveThe controlled cooling of the strip edges can be carried out after the strip has been hot-rolled, which itself is reheated by inductive
Aufheizung vorausgeht. Vorzugsweise erfolgt die gesteuerte Abkühlung der Bandkanten in-line mit dem Gießen des Bandes.Heating precedes. The controlled cooling of the strip edges is preferably carried out in-line with the casting of the strip.
Die Erfindung betrifft auch eine Anlage zur Bearbeitung dünner Metallbänder, die von einer Anlage zum Gießen von dünnen Bändern direkt aus Flüssigmetall kommen, dadurch gekennzeichnet, dass sie eine Anlage zum gesteuerten ausschließlichen oder bevorzugten Abkühlen der Bandkanten des Bandes umfasst.The invention also relates to a system for processing thin metal strips which come from a system for casting thin strips directly from liquid metal, characterized in that it comprises a system for controlled exclusive or preferred cooling of the strip edges of the strip.
Diese Anlage zum gesteuerten Abkühlen der Bandkanten des Bandes kann vor einer Anlage zum Besäumen der Bandkanten angeordnet sein.This system for controlled cooling of the band edges of the band can be arranged in front of a system for trimming the band edges.
Die Anlage zum gesteuerten Abkühlen der Bandkanten des Bandes kann auf derselben Bearbeitungstraße wie die Gießanlage für dünne Bänder angeordnet sein.The system for controlled cooling of the strip edges of the strip can be arranged on the same processing line as the casting plant for thin strips.
Die Anlage zum gesteuerten Abkühlen der Kanten kann Rampen mit Spritzdüsen umfassen, die jeweils einen Kühlfluidstrahl auf eine Seite einer Bandkante richten.The system for controlled cooling of the edges can comprise ramps with spray nozzles, each of which directs a jet of cooling fluid onto one side of a strip edge.
Die Rampen können über und unter dem Band angeordnet sein, und die Spritzdüsen richten die Strahlen auf die Außenseite des Bandes.The ramps can be located above and below the belt and the spray nozzles direct the jets onto the outside of the belt.
Die Rampen können seitlich des Bandes angeordnet sein, die Spritzdüsen richten die Strahlen auf die Schmalseite des Bandes, und die Anlage zum gesteuerten Abkühlen der Kanten umfasst auch Sperren, die in gleitendem Kontakt mit der Bandoberfläche stehen und jeweils einen Abschnitt der Breite der Bandkanten begrenzen, welcher den Wirkbereich des Kühlfluids darstellt.The ramps can be arranged to the side of the belt, the spray nozzles direct the jets onto the narrow side of the belt, and the system for controlled cooling of the edges also includes barriers which are in sliding contact with the belt surface and each delimit a section of the width of the belt edges, which represents the effective range of the cooling fluid.
Wie erklärt wurde, besteht die Erfindung darin, die Kanten des Bandes vor deren Beschneiden stark abzukühlen. Dieses Abkühlen erfolgt durch Aufspritzen eines Fluids auf eine Breite, die der Breite des zu beschneidenden Bereichs entspricht.As has been explained, the invention is to cool the edges of the tape strongly before trimming them. This cooling takes place by spraying a fluid onto a width which corresponds to the width of the region to be trimmed.
Die Erfindung wird durch Studie der nachfolgenden, die Erfindung nicht einschränkenden Beschreibung besser verständlich, welche sich auf die folgenden beiliegenden Figuren bezieht, wobei: Figur 1 schematisch in Perspektive (Figur 1a) eine Stranggießanlage für dünne Bänder zeigt, die mit einer Vorrichtung zum Besäumen der Bandkanten versehen ist, vor der eine Anlage zum Abkühlen der Bandkanten (Figur 1 b) angeordnet ist; - Figur 2 eine Variante der Anlage zum Abkühlen der Bandkanten zeigt.The invention will be better understood by studying the following description, which does not restrict the invention, and which refers to the following accompanying figures, in which: 1 shows schematically in perspective (FIG. 1a) a continuous casting installation for thin strips, which is provided with a device for trimming the strip edges, in front of which a system for cooling the strip edges (FIG. 1b) is arranged; - Figure 2 shows a variant of the system for cooling the strip edges.
Das Beispiel einer Gießanlage für Bänder aus Metall, insbesondere aus Stahl, das in Figur 1a dargestellt ist, umfasst herkömmlicherweise zwei Gießwalzen 1, 1', die innen gekühlt und in entgegengesetzte Richtung um ihre Achsen in horizontaler Stellung drehangetrieben werden. Seitliche Verschlusswände 2, 2', die zwischen die flachen Stirnseiten 3, 3' der Walzen 1, 1' angelegt werden, begrenzen mit den Seitenwänden der Walzen 1, 1' einen Gießraum, in den kontinuierlich Flüssigstahl durch nicht dargestellte Mittel wie beispielsweise durch ein feuerfestes Rohr, das mit einem Verteiler verbunden ist, gegossen wird. Auf diese Weise werden die Verfestigung und die Entnahme entlang der Pfeile 5 eines Bandes 6 mit einer Dicke von im Allgemeinen 1 bis 10 mm erzielt.The example of a casting plant for strips made of metal, in particular steel, which is shown in FIG. 1a, conventionally comprises two casting rolls 1, 1 ', which are cooled on the inside and driven in rotation in the opposite direction about their axes in a horizontal position. Lateral closure walls 2, 2 ', which are placed between the flat end faces 3, 3' of the rollers 1, 1 ', delimit with the side walls of the rollers 1, 1' a casting space into which liquid steel is continuously produced by means not shown, such as, for example fireproof pipe connected to a manifold is poured. In this way, solidification and removal along the arrows 5 of a band 6 with a thickness of generally 1 to 10 mm are achieved.
In dem dargestellten Beispiel durchläuft das Band 6 auf bekannte Weise einen Induktionsofen 7, der dazu bestimmt ist, es vor seinem Eintritt in ein Warmwalzgerüst 8, das die Dicke des Bandes 6 beispielsweise um 10% oder mehr verringert, wieder zu erwärmen.In the example shown, the strip 6 passes in a known manner through an induction furnace 7, which is intended to reheat it before it enters a hot rolling stand 8, which reduces the thickness of the strip 6, for example by 10% or more.
Erfindungsgemäß werden die Bandkanten 9, 9' des Bandes 6 sodann einem starken gesteuerten Abkühlen unterzogen, während sich der Rest des Bandes 6 weiterhin natürlich oder unter der Einwirkung einer wesentlich gemäßigter gesteuerten Abkühlung abkühlt.According to the invention, the strip edges 9, 9 'of the strip 6 are then subjected to a strongly controlled cooling, while the rest of the strip 6 continues to cool naturally or under the action of a substantially more moderate controlled cooling.
Unter „Bandkanten" 9, 9' des Bandes 6 sind Abschnitte zu verstehen, die sich jeweils von einem der Ränder des Bandes 6 auf einer Breite erstrecken, die 25 mm erreichen kann, und die sodann in einem Schritt, der dem Kaltwalzen des Bandes 6 vorausgeht, beschnitten bzw. besäumt werden."Strip edges" 9, 9 'of the strip 6 are to be understood as sections which each extend from one of the edges of the strip 6 to a width which can reach 25 mm, and then in one step, which corresponds to the cold rolling of the strip 6 preceded, trimmed or trimmed.
In dem dargestellten Beispiel erfolgt dieses Besäumen sofort nach dem gesteuerten Abkühlen und vor einem Aufwickeln des Bandes 6. In dem Beispiel der Figur 1 wird die Anlage zum gesteuerten Abkühlen von RampenIn the example shown, this trimming takes place immediately after the controlled cooling and before the tape 6 is wound up. In the example of Figure 1, the system for controlled cooling of ramps
10, 10', 10" gebildet, die Spritzdüsen umfassen, die jeweils einen Strahl 11 eines Kühlfluids auf das Band 6 richten. Dieses Fluid kann auf bekannte Weise Wasser, ein Wasser-Luft-Gemisch, Luft, flüssiger Stickstoff usw. sein, sofern es in ausreichender Menge aufgespritzt wird, um die gewünschte Abkühlwirkung an den Bandkanten 9, 9' des Bandes 6 zu erzielen. Die Rampen 10, 10', 10" sind vorzugsweise über und unter jeder Bandkante 9, 9' vorhanden, um beide Seiten jeder Kante abzukühlen. Streng genommen ist, um eine gleiche Abkühlung auf beiden Seiten jeder Bandkante zu erzielen, die Tatsache zu berücksichtigen, dass das Kühlfluid auf der Oberseite über den Eintreffbereich des Strahls 11, der von einer gegebenen Spritzdüse kommt, ablaufen kann, während ein solches Ablaufen auf der Unterseite des Bandes 6 wesentlich begrenzter ist. Wenn eine genau symmetrische Abkühlung der Bandkanten 9, 9' auf beiden Seiten des Bandes 6 erzielt werden soll, muss somit dieses Phänomen ausgeglichen werden, indem beispielsweise mehr Kühlfluid auf die Unterseite des Bandes gespritzt wird. Dieses Phänomen ist im herkömmlichen Strangguss bekannt, und der Fachmann kann mit Hilfe seiner normalen Kenntnisse und der mathematischen Modelle für das Abkühlen des Bandes, die er für den besonderen Fall seiner Gießanlage zur Verfügung hat, Abhilfe schaffen.10, 10 ', 10 ", which comprise spray nozzles, each of which directs a jet 11 of a cooling fluid onto the belt 6. This fluid can be water, a water-air mixture, air, liquid nitrogen, etc., in a known manner, if provided it is sprayed on in sufficient quantity to achieve the desired cooling effect on the band edges 9, 9 'of the band 6. The ramps 10, 10', 10 "are preferably present above and below each band edge 9, 9 ', on both sides of each Cool edge. Strictly speaking, in order to achieve equal cooling on both sides of each belt edge, take into account the fact that the cooling fluid on the top can drain over the area of arrival of the jet 11 coming from a given spray nozzle while such drainage is on the Bottom of the band 6 is much more limited. If exactly symmetrical cooling of the strip edges 9, 9 'on both sides of the strip 6 is to be achieved, this phenomenon must be compensated for, for example, by spraying more cooling fluid onto the underside of the strip. This phenomenon is known in conventional continuous casting, and the person skilled in the art can remedy the situation with the aid of his normal knowledge and the mathematical models for cooling the strip, which he has available for the special case of his caster.
In dem in Figur 1 dargestellten Beispiel spritzen die Rampen 10, 10', 10" FluidstrahlenIn the example shown in FIG. 1, the ramps 10, 10 ', 10 "spray fluid jets
11, die außen auf das Band 6 gerichtet sind. Auf diese Weise läuft das Fluid nicht zu dem zentralen Bereich des Bandes 6 ab, dessen Abkühlung somit natürlich fortgesetzt wird. Auf diese Weise wird die Wirkung der Abkühlung an den Bandkanten 9, 9', die durch punktierte Linien 12, 12' begrenzt sind, eingeschränkt. Diese Einschränkung der Lokalisierung der Abkühlwirkung kann ergänzt werden, indem der gesamte oder ein Teil des zentralen Bereichs des Bandes 6, der nicht abgekühlt werden soll, mit einer oder mehreren Kappen abgedeckt wird, wobei diese Kappe(n) in einem geringen Abstand zur Oberfläche des Bandes 6 gehalten werden.11, which are directed outside of the band 6. In this way, the fluid does not run off to the central area of the belt 6, the cooling of which is thus naturally continued. In this way, the effect of cooling on the band edges 9, 9 ', which are delimited by dotted lines 12, 12', is limited. This limitation of the localization of the cooling effect can be supplemented by covering all or part of the central region of the band 6 which is not to be cooled with one or more caps, this cap (s) being a small distance from the surface of the Volume 6 are held.
Bei der in Figur 2 dargestellten Variante sind die Rampen 10, 10' an der Seite und nicht über oder unter dem Band 6 angeordnet und spritzen ihre Strahlen 11 des Kühlfluids auf die Schmalseite des Bandes 6. Es wird ein Ablaufen des Fluids zum zentralen Bereich des Bandes vermieden, indem in gleitendem Kontakt mit der Oberfläche desselben eine Sperre 13, 13' angeordnet ist, die den Wirkbereich des Kühlfluids stark auf einen Abschnitt 14, 14' der Länge der Bandkanten 9, 9' begrenzt. Diese Lösung bietet im Vergleich mit der vorhergehenden den Vorteil, dass die Oberfläche des zentralen Bereichs weiter frei bleibt, wodurch seine Beobachtung einfacher ist. Ferner befinden sich die Rampen 10, 10' somit in einem Abstand zu der von dem Band 6 ausgehenden Strahlung, und es sind somit keine komplexen Mittel zum Schutz oder Abkühlen erforderlich, um deren Beeinträchtigung zu vermeiden.In the variant shown in FIG. 2, the ramps 10, 10 'are arranged on the side and not above or below the belt 6 and spray their jets 11 of the cooling fluid onto the narrow side of the belt 6. The fluid runs off to the central area of the belt Avoided tape, in that a lock 13, 13 'is arranged in sliding contact with the surface thereof, which strongly limits the effective range of the cooling fluid to a section 14, 14' of the length of the tape edges 9, 9 '. Compared to the previous one, this solution offers the advantage that the The surface of the central area remains free, making it easier to observe. Furthermore, the ramps 10, 10 'are thus at a distance from the radiation emanating from the band 6, and therefore no complex means for protection or cooling are required in order to avoid impairing them.
Nach der Anlage zum Abkühlen der Kanten, die soeben beschrieben wurde, durchläuft das Band eine Anlage zum Besäumen der Bandkanten, die durch Kreissägen 15, 15' dargestellt sind und bevorzugt von Kreismesserscheren gebildet sind, wobei natürlich jede bekannte Vorrichtung, die diese Funktion am ablaufenden Band 6 gewährleisten kann, verwendet werden kann. Solche Vorrichtungen sind allgemein bekannt und werden insbesondere in Walzstraßen verwendet. Sodann wird das Band 6 in Form eines Bundes 16 um einen in Drehung befindlichen Haspeldorn 17 aufgewickelt. Die gewickelte Bund kann sodann zu der Anlage befördert werden, die die Weiterbehandlung des Bandes 6 gewährleistet, beispielsweise ein Kaltwalzen, ein Ausglühen-Beizen, das einem Kaltwalzen vorausgeht, usw.After the system for cooling the edges, which has just been described, the band passes through a system for trimming the band edges, which are represented by circular saws 15, 15 'and are preferably formed by circular knife scissors, and of course any known device which performs this function at the end Volume 6 can ensure can be used. Such devices are generally known and are used in particular in rolling mills. The band 6 is then wound in the form of a bundle 16 around a coiler mandrel 17 which is rotating. The wound bundle can then be conveyed to the plant which ensures the further treatment of the strip 6, for example cold rolling, annealing pickling which precedes cold rolling, etc.
Durch das beschleunigte Abkühlen der Bandkanten 9, 9' soll diesen eine metallurgische Struktur verliehen werden, die eine deutliche Veränderung im Vergleich mit der Struktur des Restes des Bandes 6 darstellt, wobei diese Veränderung in Richtung einer größeren Kohäsion des Metalls geht. Die Anlage zum Besäumen derThe accelerated cooling of the strip edges 9, 9 'is intended to give them a metallurgical structure which represents a significant change in comparison with the structure of the rest of the strip 6, this change going in the direction of greater cohesion of the metal. The system for trimming the
Bandkanten benötigt mehr Aufwand, um ein Schneiden auf diesem Niveau durchzuführen, als wenn die mechanischen Eigenschaften des Bandes 6 über seine gesamte Breite im Wesentlichen homogen wären. Dieser Mehraufwand führt jedoch zu einem sauberen Schnitt, der kein späteres Entgraten erfordert.Belt edges require more effort to perform cutting at this level than if the mechanical properties of the belt 6 were essentially homogeneous over its entire width. However, this additional effort leads to a clean cut that does not require subsequent deburring.
Die erfindungsgemäße Anlage zum Abkühlen der Bandanten eines dünnen Bandes, das durch Stranggießen hergestellt wurde, ist nicht unbedingt in-line mit der Gießanlage angeordnet. Sie kann an jeder Stelle der Herstellungskette angeordnet sein, an der die Temperatur des Bandes größer als 950°C ist, so dass die gewünschte metallurgische Wirkung für diese Abkühlung erzielt wird. Es ist überdies nicht immer erforderlich, dass die Anlage 15, 15' zum Beschneiden der Bandkanten 9, 9' sofort auf die erfindungsgemäße Anlage zum Abkühlen folgt, außer wenn dieses Abkühlen insofern nicht wirksam war, als die Gefahr besteht, dass der Bruch der Bandkanten 9, 9' spontan während der Bearbeitung des Bandes 6 vor dem Beschneiden der Bandkanten 9, 9' auftreten kann. Ein solcher unkontrollierbarer spontaner Bruch kann Gefahren für das Personal und die Ausrüstung mit sich bringen, wenn er an einer Stelle auftritt, die nicht dazu vorgesehen ist, die geschnittenen Bandkanten 9, 9' aufzunehmen. Ein weiterer Vorteil der direkten Aneinanderreihung des Abkühlens und Beschneidens besteht darin, dass die Bandkanten 9, 9' somit nicht die Zeit haben, unter der Einwirkung der Wärme, die vom Rest des Bandes 6 kommt, wieder Temperatur anzunehmen. Ein solches erneutes Annehmen von Temperatur wäre in der Lage, die Kanten 9, 9' zu einer metallurgischen Struktur und mechanischen Eigenschaften zurückzuführen, die dem Rest des Bandes 6 ähnlicher sind, wodurch die Wirkung des Abkühlens der Kanten und der Schnittqualität verringert würde.The plant according to the invention for cooling the band edges of a thin band, which was produced by continuous casting, is not necessarily arranged in-line with the casting plant. It can be arranged at any point in the production chain at which the temperature of the strip is greater than 950 ° C., so that the desired metallurgical effect for this cooling is achieved. Furthermore, it is not always necessary for the system 15, 15 'for trimming the band edges 9, 9' to immediately follow the system for cooling according to the invention, unless this cooling was not effective in so far as there is a risk of the band edges breaking 9, 9 'can occur spontaneously during the processing of the tape 6 before trimming the tape edges 9, 9'. Such an uncontrollable spontaneous rupture can be dangerous for personnel and equipment if they are at one Occurs point that is not intended to receive the cut band edges 9, 9 '. A further advantage of directly lining up the cooling and trimming is that the strip edges 9, 9 'thus do not have the time to return to temperature under the action of the heat coming from the rest of the strip 6. Such a re-assumption of temperature would be able to return the edges 9, 9 'to a metallurgical structure and mechanical properties which are more similar to the rest of the band 6, reducing the effect of the cooling of the edges and the quality of the cut.
Als Variante kann der Schritt des Abkühlens der Bandanten 9, 9' mit einem Schritt des gesteuerten Abkühlens des gesamten Bandes 6 aus metallurgischen Gründen zusammenfallen. Während dieses Schritts ist nun eine wesentlich stärkere Abkühlung an den Bandkanten 9, 9' als am Rest des Bandes 6 vorzunehmen, um die Erfindung einzusetzen. Es erfolgt somit auf diese Weise nicht mehr eine ausschließliche Abkühlung, sondern nur eine bevorzugte Abkühlung der Bandkanten 9, 9'.As a variant, the step of cooling the band edges 9, 9 ′ can coincide with a step of controlled cooling of the entire band 6 for metallurgical reasons. During this step, a much stronger cooling is now to be carried out on the strip edges 9, 9 'than on the rest of the strip 6 in order to use the invention. In this way, there is no longer an exclusive cooling, but only a preferred cooling of the strip edges 9, 9 '.
Der soeben beschriebene Fall ergibt sich bei einem zwischen Walzen gegossenen Band 6, jedoch es versteht sich, dass die Erfindung auch dann anwendbar ist, wenn das dünne Band 6 durch ein anderes Verfahren gegossen wurde. Das erfindungsgemäße Verfahren ist auch auf andere Metalle als Stahl anwendbar, wenn diese in der Lage sind, direkt zu einem dünnen Band gegossen zu werden, wie beispielsweise Aluminium, Kupfer und ihre Legierungen. The case just described arises in the case of a strip 6 cast between rolls, but it is understood that the invention can also be used if the thin strip 6 was cast by another method. The method according to the invention is also applicable to metals other than steel, if they are capable of being cast directly into a thin strip, such as aluminum, copper and their alloys.

Claims

PATENTANSPRÜCHE
1. Verfahren zur Herstellung eines Metallbandes aus einem Band (6), das direkt aus Flüssigmetall (4) gegossen und bei dem ein Besäumen der Bandkanten (9, 9') vorgenommen wird, dadurch gekennzeichnet, dass die1. A method for producing a metal strip from a strip (6) which is cast directly from liquid metal (4) and in which a trimming of the strip edges (9, 9 ') is carried out, characterized in that the
Bandkanten (9, 9') vor dem Besäumen auf gesteuerte Weise abgekühlt werden, um sie brüchiger als den Rest des Bandes (6) zu machen.Band edges (9, 9 ') are cooled in a controlled manner before trimming in order to make them more fragile than the rest of the band (6).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Metall Stahl ist und das Abkühlen der Bandkanten (9, 9') bei einer Temperatur von 950 bis 1100°C beginnt.2. The method according to claim 1, characterized in that the metal is steel and the cooling of the strip edges (9, 9 ') begins at a temperature of 950 to 1100 ° C.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Besäumen der Bandkanten (9, 9') sofort nach deren gesteuerten Abkühlen vorgenommen wird.3. The method according to claim 1 or 2, characterized in that the trimming of the band edges (9, 9 ') is carried out immediately after their controlled cooling.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Besäumen der Bandkanten (9, 9') vor einem Aufwickeln des Bandes (6) vorgenommen wird.4. The method according to any one of claims 1 to 3, characterized in that the trimming of the tape edges (9, 9 ') is carried out before winding the tape (6).
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das gesteuerte Abkühlen der Bandkanten (9, 9') nach einem Warmwalzen des Bandes (6) vorgenommen wird, dem ein Wiedererwärmen des Bandes (6) durch induktive Aufheizung vorausgeht.5. The method according to any one of claims 1 to 4, characterized in that the controlled cooling of the strip edges (9, 9 ') is carried out after hot rolling the strip (6), which is preceded by a reheating of the strip (6) by inductive heating.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das gesteuerte Abkühlen der Bandkanten (9, 9') in-line mit dem Gießen des Bandes (6) erfolgt.6. The method according to any one of claims 1 to 5, characterized in that the controlled cooling of the strip edges (9, 9 ') takes place in-line with the casting of the strip (6).
7. Anlage zur Bearbeitung eines dünnen Metallbandes (6), das von einer Anlage zum Gießen von dünnen Bändern direkt aus Flüssigmetall kommt, dadurch gekennzeichnet, dass sie eine Anlage zum ausschließlichen oder bevorzugten gesteuerten Abkühlen der Bandkanten (9, 9') des Bandes (6) umfasst.7. Plant for processing a thin metal strip (6), which comes from a plant for casting thin strips directly from liquid metal, characterized in that it is a system for the exclusive or preferred controlled cooling of the strip edges (9, 9 ') of the strip ( 6) includes.
8. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass die Anlage zum gesteuerten Abkühlen der Bandkanten (9, 9') des Bandes (6) einer Anlage (15, 15') zum Besäumen der Bandkanten (9, 9') vorausgeht. 8. Installation according to claim 7, characterized in that the installation for the controlled cooling of the strip edges (9, 9 ') of the strip (6) precedes an installation (15, 15') for trimming the strip edges (9, 9 ').
9. Anlage nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Anlage zum gesteuerten Abkühlen der Bandkanten (9, 9') des Bandes (6) auf derselben Bearbeitungsstraße wie die Gießanlage für dünne Bänder angeordnet ist.9. Installation according to claim 7 or 8, characterized in that the installation for the controlled cooling of the strip edges (9, 9 ') of the strip (6) is arranged on the same processing line as the casting installation for thin strips.
10. Anlage nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Anlage zum gesteuerten Abkühlen der Bandkanten (9, 9') Rampen (10, 10', 10") mit Spritzdüsen umfasst, die jeweils einen Strahl (11) eines Kühlfluids auf eine Seite einer Bandkante (9, 9') des Bandes (6) richten.10. Installation according to one of claims 7 to 9, characterized in that the installation for controlled cooling of the strip edges (9, 9 ') ramps (10, 10', 10 ") with spray nozzles, each having a jet (11) Direct the cooling fluid to one side of a band edge (9, 9 ') of the band (6).
11. Anlage nach Anspruch 10, dadurch gekennzeichnet, dass die Rampen (10, 10', 10") über und unter dem Band (6) angeordnet sind, und dass die Spritzdüsen die Strahlen (11 ) auf die Außenseite des Bandes (6) richten.11. Installation according to claim 10, characterized in that the ramps (10, 10 ', 10 ") are arranged above and below the belt (6) and that the spray nozzles spray the jets (11) onto the outside of the belt (6) judge.
12. Anlage nach Anspruch 10, dadurch gekennzeichnet, dass die Rampen (10, 10', 10") seitlich des Bandes (6) angeordnet sind, dass die Spritzdüsen die Strahlen (11) auf die Schmalseiten des Bandes (6) richten und dass die Anlage zum gesteuerten Abkühlen der Bandkanten (9, 9') auch Sperren (13, 13') umfasst, die mit der Oberfläche des Bandes (6) in gleitendem Kontakt stehen und jeweils einen Abschnitt (14, 14') der Breite der Bandkanten (9, 9') des Bandes (6) begrenzen, der den Wirkbereich des Kühlfluids darstellt. 12. System according to claim 10, characterized in that the ramps (10, 10 ', 10 ") are arranged to the side of the belt (6), that the spray nozzles direct the jets (11) onto the narrow sides of the belt (6) and that the system for the controlled cooling of the strip edges (9, 9 ') also includes locks (13, 13') which are in sliding contact with the surface of the strip (6) and each have a section (14, 14 ') of the width of the strip edges (9, 9 ') of the band (6), which represents the effective range of the cooling fluid.
EP02793060A 2001-12-20 2002-12-18 Method and device for the production of a trimmed metal strip Expired - Lifetime EP1455975B1 (en)

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FR0116601A FR2833871B1 (en) 2001-12-20 2001-12-20 METHOD AND PLANT FOR MANUFACTURING METAL STRIPS FROM STRIPS CAST DIRECTLY FROM LIQUID METAL
FR0116601 2001-12-20
PCT/EP2002/014467 WO2003053612A1 (en) 2001-12-20 2002-12-18 Method and device for the production of a trimmed metal strip

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FR2833871A1 (en) 2003-06-27
WO2003053612A1 (en) 2003-07-03
ATE311951T1 (en) 2005-12-15
US7367104B2 (en) 2008-05-06
US20050108868A1 (en) 2005-05-26
CN1319678C (en) 2007-06-06
AU2002358748A1 (en) 2003-07-09
KR20040063177A (en) 2004-07-12
FR2833871B1 (en) 2004-07-09
MXPA04006043A (en) 2004-09-27
AU2002358748B2 (en) 2007-05-24
DE50205229D1 (en) 2006-01-12
EP1455975B1 (en) 2005-12-07
CN1630568A (en) 2005-06-22

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