EP0593001A1 - Method and device for making hot-rolled strips or beams from continuously cast material - Google Patents

Method and device for making hot-rolled strips or beams from continuously cast material Download PDF

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Publication number
EP0593001A1
EP0593001A1 EP93116476A EP93116476A EP0593001A1 EP 0593001 A1 EP0593001 A1 EP 0593001A1 EP 93116476 A EP93116476 A EP 93116476A EP 93116476 A EP93116476 A EP 93116476A EP 0593001 A1 EP0593001 A1 EP 0593001A1
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EP
European Patent Office
Prior art keywords
furnace
casting
rolling
line
ferry
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Granted
Application number
EP93116476A
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German (de)
French (fr)
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EP0593001B1 (en
Inventor
Bernd Krüger
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SMS Siemag AG
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SMS Schloemann Siemag AG
Schloemann Siemag AG
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    • 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
    • B21B1/466—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 non-continuous process, i.e. the cast being cut before 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • Y10T29/49991—Combined with rolling
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5184—Casting and working

Definitions

  • the invention relates to a method and a plant for the production of hot-rolled strips or profiles from continuous, continuously cast primary material in successive steps of a finishing train, wherein the continuously cast primary material in one or more casting machines, after solidification, is divided into extrudates and the extrudates are passed through a compensating furnace in one The heating zone is heated to the rolling temperature, then into a buffer zone and then into a storage zone and from there into the finishing train, where it is finish-rolled.
  • continuously cast thin slabs are used as raw material for the finishing train, which for example have a thickness of less than 70 mm, preferably 50 mm.
  • the thin slabs are separated from an endless cast strand produced in a continuous casting machine, each with a length that corresponds to the required coil weight for the finished hot wide strip.
  • the casting speed of continuous casting machines for thin slab continuous casting is relatively slow, while the feeding speed an assigned continuous hot strip mill is approximately 2 to 4 times higher. It is therefore advantageous to assign at least two casting machines to a continuous finishing train in such a way that thin slabs are alternately separated from each of the two endless casting strands and then each fed to the finishing train for rolling.
  • the thin slabs are brought out of the respective casting line into alignment with the hot strip mill so that they can then be drawn into this.
  • it has two single-strand CSP casting machines, each with a compensating furnace and a ferry, and a common holding furnace in front of the CSP roller train for both strands.
  • a heating zone, a system buffer and a storage furnace part are arranged in succession in each compensation furnace.
  • the subsequent system buffer is required in order to bridge the transport time required for alternating transverse transport of the thin slabs from both casting machines into the roller mill.
  • the storage furnace creates the possibility of bridging limited downtimes of the roll train, for example caused by roll changes or malfunctions, with continuous cast strand production.
  • the thickness of the thin slab is 50 mm
  • the width is 1550 mm, for example Length of the thin slab 44 m
  • the casting speed 5.5 m / min.
  • the feed speed of the continuous hot-rolled strip finishing train 0.29 m / s corresponding to 17.4 m / min.
  • the feed speed is 3.2 times higher than the casting speed.
  • the length of the heating zone is approx. 40 m
  • the length of the system buffer and the storage furnace part are approx. 105 m
  • the known finishing mill is arranged opposite to the direction of discharge of the steel strip caster with a lateral offset, whereby in addition to the compensation furnaces in the direction of discharge of the steel strip caster, a centrally arranged temperature compensation furnace is provided, which conveys towards the finish rolling mill, and the three Compensating furnaces lying next to each other in parallel are connected by an end-side transverse transport device.
  • the invention has for its object to improve a method and a plant for the production of hot-rolled strips or profiles from continuously cast material of the type mentioned in that they avoid a comparatively short furnace system and thus a lower need for area and thus avoiding the aforementioned disadvantages and difficulties Investment costs.
  • strand pieces are moved from the buffer zone into a ferry and are transversely transported therefrom from the casting line into the rolling line, therein in longitudinal transport opposite to the conveying direction of the continuously cast primary material is stored using a storage furnace arranged next to the compensating furnace in the rolling line and, after being called up from the storage furnace, is introduced into the rolling line via a ferry and occasionally via a holding furnace upstream of this and upstream of the rolling train, and is then rolled into the end product.
  • Embodiments of the invention are in accordance with the Subclaims provided.
  • a compensating furnace used for this method can at least be moved around the length of the storage furnace part can be reduced from approx. 55 m, for example from a total length of 147 m to a total length of 92 m. This results in lower investment costs due to the smaller space requirement for the system, while avoiding the aforementioned disadvantages and difficulties.
  • a plant for the production of hot-rolled strips or profiles from endless continuously cast starting material in successive steps of a finishing train for carrying out the method according to the invention comprising two CSP casting machines or casting lines according to the preamble of claim 4, is designed so that the formed as a memory Furnace part is arranged within the rolling line at a lateral distance next to the leveling furnaces of the casting lines.
  • the CSP system according to FIG. 1 has two identical casting lines (xx) and one rolling line (yy).
  • each casting line (xx) there is a casting machine (1a, 1b) and a pair of scissors (2a, 2b) arranged after it for dividing the casting strands into individual thin slabs.
  • This is followed by a long furnace system, each with a heating zone (3a, 3b), a system buffer (4a, 4b) and a storage furnace (5a, 5b).
  • the length of a heating zone (3) is approximately 40 m
  • the length of a system buffer (4) is also approximately 40 m
  • the length of a storage furnace part (5a, 5b) is approximately 67 m.
  • the length of the two parallel equalizing furnaces is approximately 147 m.
  • a transverse transport device each with a ferry (6a, 6b) with a length of approx. 49 m, is arranged downstream of these furnaces.
  • the rolling line (yy) with the holding furnace (7) of about 49 m in length, and the finishing train (8).
  • the latter comprises three roughing stands and three finishing stands as well as a descaling device (9) on the feed side.
  • the CSP system designed according to the invention according to FIG. 2 has two shortened equalizing furnaces in the two casting lines (x-x), comprising only the heating zones (3a, 3b) and the system buffers (4a, 4b).
  • the length of a heating zone (3a, 3b) is approx. 40 m and a system buffer (4a, 4b) is approx. 50 m.
  • the length of the furnace system is thus reduced from 147 m according to FIG. 1 to 92 m according to FIG.
  • the furnace part (5) designed as a store is arranged within the rolling line (y-y) at a lateral distance next to the compensating furnaces (3a, 4a; 3b, 4b).
  • the length of the system measured from the shears (2a, 2b) to the end of the holding furnace (7), is reduced from 245 m to 190 m.
  • the arrangement is such that the storage furnace part (5) extends approximately parallel to the heating and buffer zones (3, 4) of the compensation furnaces.
  • a system buffer (4a, 4b) extended from 40 m to approx. 50 m and a storage furnace (5) extended from 67 m to 80 m.
  • An embodiment provides that in at least one of the casting lines (xx), advantageously in both additional storage furnace part (20a, 20b) can be arranged.
  • additional furnace parts With these additional furnace parts, the possible bridging time when the roller mill is at a standstill, for example as a result of roller change or malfunction, is extended by a casting length of approx. 50 m, ie by approx.
  • a path / time network location is shown in FIG.
  • the example shows two thin slabs (2a, 2b) at time zero at the end of the heating zones (3a and 3b) and two thin slabs (1a, 1b) within the system buffers (4a, 4b).
  • the thin slabs (1a, 1b) advanced by 52.5 m into the ferries (6a, 6b) at a transport speed of 0.75 m / s.
  • the thin slab (1a) in the ferry (6a) entered the rolling line (yy) at a ferry speed of 0.25 m / s in 40 seconds from the casting line by 10 m, while the ferry ( 6b) remains unchanged in the second casting line (xx).
  • the thin slab (1a) was then transported from the ferry (6a) into the holding furnace (7) by a further 52.5 m.
  • the working method of the plant according to the invention has a rapid sequence, with an intermediate time of 136 s or 2 x 86 s remaining between every two rolling cycles of purely mathematically 304 s.
  • the resulting idle times allow the drive units of the finishing mill stands to be operated in a high-performance stage during each 152 s rolling process without the electric motors being thermally overloaded.
  • the diagram shows that the connection of a third casting line would no longer fit into the functional sequence.
  • the furnace system designed according to the invention can provide sufficient bridging time with a shortened layout in order to ensure continuous production of the casting machines at least until the end of one or two casting batches in the event of downtimes of the roller train resulting from roller changes or other reasons guarantee.

Abstract

In a method for the production of hot-rolled strips or sections from continuously cast feedstock in successive working steps in a finishing train, in which the feedstock continuously cast in one or more casting machines is cut into lengths after solidification and the lengths first of all being heated in a heating zone (3a,3b) to rolling temperature as they pass through a soaking furnace and then transferred to a buffer zone (4a, 4b) and then into a temporary storage zone (5), from where they are transferred to the finishing train (8), in which they are finish-rolled, a significant shortening of the furnace system used can be achieved by the fact that strand lengths are transferred from the buffer zone into a shuttle (6a, 6b) and transferred transversely by the latter out of the casting line (x) into the rolling line (y), where they are conveyed longitudinally in the opposite direction to that in which the continuously cast feedstock is conveyed, using a temporary storage furnace arranged in the rolling line next to the soaking furnace and, after being fetched from the temporary storage furnace are introduced via a [lacuna] and, in some cases, via a holding furnace (7) arranged ahead of the rolling train, into the rolling train, where they are finish-rolled to give the end product. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren sowie eine Anlage zur Herstellung von warmgewalzten Bändern oder Profilen aus endlos stranggegossenem Vormaterial in aufeinanderfolgenden Arbeitsschritten einer Fertigstraße, wobei das in einer oder mehreren Gießmaschinen endlos stranggegossene Vormaterial nach Erstarrung in Strangstücke zerteilt und die Strangstücke im Durchlauf durch einen Ausgleichsofen in einer Heizzone auf Walztemperatur erwärmt, sodann in eine Pufferzone und danach in eine Speicherzone und aus dieser in die Fertigstraße überführt und darin fertiggewalzt wird.The invention relates to a method and a plant for the production of hot-rolled strips or profiles from continuous, continuously cast primary material in successive steps of a finishing train, wherein the continuously cast primary material in one or more casting machines, after solidification, is divided into extrudates and the extrudates are passed through a compensating furnace in one The heating zone is heated to the rolling temperature, then into a buffer zone and then into a storage zone and from there into the finishing train, where it is finish-rolled.

In modernen CSP-Produktionsanlagen werden als Vormaterial für die Fertigstraße stranggegossene Dünnbrammen eingesetzt, die beispielsweise eine Dicke von weniger als 70 mm, vorzugsweise von 50 mm, haben. Die Dünnbrammen werden von einem in einer Stranggießmaschine erzeugten endlosen Gußstrang abgetrennt, und zwar jeweils mit einer Länge, die dem geforderten Coil-Gewicht für das fertige Warmbreitband entspricht. Die Gießgeschwindigkeit von Stranggießmaschinen für Dünnbrammen-Strangguß ist relativ gering, während die Einzugsgeschwindigkeit einer zugeordneten kontinuierlichen Warmbreitband-Fertigstraße etwa um den Faktor 2 bis 4 höher liegt. Deshalb ist es vorteilhaft einer kontinuierlichen Fertigstraße wenigstens zwei Gießmaschinen zuzuordnen, derart, daß Dünnbrammen abwechselnd von jedem der beiden endlosen Gußstränge abgetrennt und anschließend jeweils der Fertigstraße zur Auswalzung zugeführt werden. Mit Hilfe beispielsweise zweier Längs/Quer/Längs-Transportsysteme, sogenannter Fähren, werden die Dünnbrammen aus der jeweiligen Gießlinie heraus in Fluchtlinie mit der Warmbreitband-Fertigstraße gebracht, damit sie dann in diese eingezogen werden können. Bei einer bekannten Ausführung derartiger Anlagen weist diese zwei Einstrang-CSP-Gießmaschinen mit je einem Ausgleichsofen und je einer Fähre, sowie für beide Stränge einen gemeinsamen Halteofen vor der CSP-Walzenstraße auf. In jedem Ausgleichsofen ist aufeinanderfolgend eine Heizzone, ein Systempuffer und ein Speicherofenteil angeordnet. In der Heizzone werden die Dünnbrammen auf Walztemperatur aufgeheizt. Der anschließende Systempuffer ist erforderlich, um die beim wechselweisen Quertransport der Dünnbrammen aus beiden Gießmaschinen in die Walzenstraße erforderliche Transportzeit zu überbrücken. Der Speicherofen schafft die Möglichkeit, begrenzte Stillstandszeiten der Walzenstraße, hervorgerufen beispielsweise durch Walzenwechsel oder Störungen, bei fortlaufender Gußstrangproduktion zu überbrücken.In modern CSP production plants, continuously cast thin slabs are used as raw material for the finishing train, which for example have a thickness of less than 70 mm, preferably 50 mm. The thin slabs are separated from an endless cast strand produced in a continuous casting machine, each with a length that corresponds to the required coil weight for the finished hot wide strip. The casting speed of continuous casting machines for thin slab continuous casting is relatively slow, while the feeding speed an assigned continuous hot strip mill is approximately 2 to 4 times higher. It is therefore advantageous to assign at least two casting machines to a continuous finishing train in such a way that thin slabs are alternately separated from each of the two endless casting strands and then each fed to the finishing train for rolling. With the help of, for example, two longitudinal / transverse / longitudinal transport systems, so-called ferries, the thin slabs are brought out of the respective casting line into alignment with the hot strip mill so that they can then be drawn into this. In a known version of such systems, it has two single-strand CSP casting machines, each with a compensating furnace and a ferry, and a common holding furnace in front of the CSP roller train for both strands. A heating zone, a system buffer and a storage furnace part are arranged in succession in each compensation furnace. In the heating zone, the thin slabs are heated to the rolling temperature. The subsequent system buffer is required in order to bridge the transport time required for alternating transverse transport of the thin slabs from both casting machines into the roller mill. The storage furnace creates the possibility of bridging limited downtimes of the roll train, for example caused by roll changes or malfunctions, with continuous cast strand production.

Bei einer solchen Anlage beträgt beispielsweise die Dicke der Dünnbramme 50 mm, die Breite 1550 mm, die Länge der Dünnbramme 44 m, die Gießgeschwindigkeit 5,5 m/min. und die Einzugsgeschwindigkeit der kontinuierlichen Warmbreitband-Fertigstraße 0,29 m/s entsprechend 17,4 m/min. Hierbei liegt die Einzugsgeschwindigkeit um den Faktor 3,2 höher als die Gießgeschwindigkeit. die Länge der Heizzone beträgt ca. 40 m, die Längen vom Systempuffer und dem Speicherofenteil betragen zusammen ca. 105 m, die Länge der Fähre 49 m und die Länge des Halteofens 49 m. Das ergibt bei der als Beispiel angenommenen CSP-Anlage eine Länge der Ofenanlage von ca. 147 m und einschließlich der Fähren von 194 m und zusammen mit dem vor der Walzenstraße angeordneten Halteofen eine Gesamt Länge von 245 m. Eine Anlage von dieser Länge ist äußerst kostenaufwendig und erfordert vergleichsweise viel Platz.In such a system, the thickness of the thin slab is 50 mm, the width is 1550 mm, for example Length of the thin slab 44 m, the casting speed 5.5 m / min. and the feed speed of the continuous hot-rolled strip finishing train 0.29 m / s corresponding to 17.4 m / min. The feed speed is 3.2 times higher than the casting speed. the length of the heating zone is approx. 40 m, the length of the system buffer and the storage furnace part are approx. 105 m, the length of the ferry 49 m and the length of the holding furnace 49 m. In the CSP system, which is taken as an example, this results in a length of the furnace system of approximately 147 m and including the ferries of 194 m and, together with the holding furnace arranged in front of the roller train, a total length of 245 m. A system of this length is extremely expensive and requires a comparatively large amount of space.

Zur Vermeidung dieser Nachteile wurde ein Anlagenkonzept für die Herstellung von Stahlband gemäß EP 0 413 169 A1 vorgeschlagen. Zur Verringerung der Investitionskosten und des Flächenbedarfs sowie zur Verbesserung der Temperaturführung ist das bekannte Fertigwalzwerk entgegengesetzt zur Ausförderrichtung der Stahlbandgießanlage mit seitlichem Versatz angeordnet, wobei neben den in Auslaufrichtung der Stahlbandgießanlage fördernden Ausgleichsöfen ein entgegengesetzt in Richtung Fertigwalzwerk fördernder, mittig angeordneter Temperaturausgleichsofen vorgesehen ist und die drei parallel nebeneinander liegenden Ausgleichsöfen durch eine stirnseitige Quertransportvorrichtung verbunden sind.To avoid these disadvantages, a system concept for the production of steel strip according to EP 0 413 169 A1 has been proposed. In order to reduce the investment costs and the space requirement and to improve the temperature control, the known finishing mill is arranged opposite to the direction of discharge of the steel strip caster with a lateral offset, whereby in addition to the compensation furnaces in the direction of discharge of the steel strip caster, a centrally arranged temperature compensation furnace is provided, which conveys towards the finish rolling mill, and the three Compensating furnaces lying next to each other in parallel are connected by an end-side transverse transport device.

Nachteilig ergeben sich durch die einmalige Umkehr der Transportrichtung der Dünnbrammen sehr unterschiedliche Verweilzeiten von Anfang und Ende der Dünnbrammen im Ausgleichsofen und damit ungünstige Temperaturverteilungen über die Länge der Dünnbramme. Ein weiterer Nachteil des bekannten Anlagenkonzepts ergibt sich dadurch, daß die Ofenanlage unter der Gießanlage hindurchgeführt werden muß.The disadvantage of the one-time reversal of the transport direction of the thin slabs results in very different dwell times from the beginning and end of the thin slabs in the compensating furnace and thus unfavorable temperature distributions over the length of the thin slab. Another disadvantage of the known system concept results from the fact that the furnace system has to be passed under the casting system.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Anlage zur Herstellung von warmgewalzten Bändern oder Profilen aus stranggegossenem Vormaterial der eingangs genannten Art dahingehend zu verbessern daß diese unter Vermeidung der vorgenannten Nachteile und Schwierigkeiten eine vergleichsweise kurze Ofenanlage und damit einen geringeren Bedarf an Fläche und Investitionskosten aufweist.The invention has for its object to improve a method and a plant for the production of hot-rolled strips or profiles from continuously cast material of the type mentioned in that they avoid a comparatively short furnace system and thus a lower need for area and thus avoiding the aforementioned disadvantages and difficulties Investment costs.

Die Aufgabe wird bei einem Verfahren entsprechend der im Oberbegriff von Anspruch 1 genannten Art mit der Erfindung dadurch gelöst, daß Strangstücke aus der Pufferzone in eine Fähre eingefahren und mit dieser im Quertransport aus der Gießlinie in die Walzlinie überführt, darin im Längstransport entgegengesetzt zur Förderrichtung des stranggegossenen Vormaterials unter Verwendung eines neben dem Ausgleichsofen in der Walzlinie angeordneten Speicherofens gespeichert und nach Abruf aus dem Speicherofen über eine Fähre und fallweise über einen dieser nach- und der Walzenstraße vorgeordneten Halteofen in die Walzenstraße eingeführt und darin zum Endprodukt fertiggewalzt werden. Ausgestaltungen der Erfindung sind entsprechend den Unteransprüchen vorgesehen.The object is achieved in a method according to the type mentioned in the preamble of claim 1 with the invention in that strand pieces are moved from the buffer zone into a ferry and are transversely transported therefrom from the casting line into the rolling line, therein in longitudinal transport opposite to the conveying direction of the continuously cast primary material is stored using a storage furnace arranged next to the compensating furnace in the rolling line and, after being called up from the storage furnace, is introduced into the rolling line via a ferry and occasionally via a holding furnace upstream of this and upstream of the rolling train, and is then rolled into the end product. Embodiments of the invention are in accordance with the Subclaims provided.

Dadurch, daß das Strangstück nicht innerhalb der Gießlinie in einen darin befindlichen Speicherofenteil eingelagert, sondern unter Verwendung eines neben dem Ausgleichsofen in der Walzlinie angeordneten Speicherofens im Längstransport entgegengesetzt zur Förderrichtung des stranggegossenen Vormaterials in diesen überführt wird, kann ein für dieses Verfahren verwendeter Ausgleichsofen zumindest um die Länge des Speicherofenteils von ca. 55 m beispielsweise von 147 m Gesamtlänge auf 92 m Gesamtlänge verkürzt werden. Damit ergeben sich für die Anlage unter Vermeidung der vorgenannten Nachteile und Schwierigkeiten geringere Investitionskosten infolge des geringeren Flächenbedarfs.Due to the fact that the strand piece is not stored in a storage furnace part located within the casting line, but instead is transferred in longitudinal transport opposite to the conveying direction of the continuously cast primary material, using a storage furnace arranged next to the compensating furnace in the rolling line, a compensating furnace used for this method can at least be moved around the length of the storage furnace part can be reduced from approx. 55 m, for example from a total length of 147 m to a total length of 92 m. This results in lower investment costs due to the smaller space requirement for the system, while avoiding the aforementioned disadvantages and difficulties.

Eine Anlage zur Herstellung von warmgewalzten Bändern oder Profilen aus endlos stranggegossenem Vormaterial in aufeinanderfolgenden Arbeitsschritten einer Fertigstraße zur Durchführung des Verfahrens nach der Erfindung, umfassend zwei CSP-Gießmaschinen bzw. Gießlinien entsprechend dem Oberbegriff von Anspruch 4, ist so ausgelegt, daß der als Speicher ausgebildete Ofenteil innerhalb der Walzlinie in seitlichem Abstand neben den Ausgleichsöfen der Gießlinien angeordnet ist.A plant for the production of hot-rolled strips or profiles from endless continuously cast starting material in successive steps of a finishing train for carrying out the method according to the invention, comprising two CSP casting machines or casting lines according to the preamble of claim 4, is designed so that the formed as a memory Furnace part is arranged within the rolling line at a lateral distance next to the leveling furnaces of the casting lines.

Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung der in den Zeichnungen schematisch dargestellten Ausführungsbeispiele.Details, features and advantages of the invention result from the following explanation of the exemplary embodiments shown schematically in the drawings.

Es zeigen:

Fig. 1
eine CSP-Anlage mit zwei Gießmaschinen und nachgeordneten Langgestreckten Ausgleichsöfen sowie mit einer zwischen den Gießlinien angeordneten, eine CSP-Walzenstraße aufweisenden Walzlinie,
Fig. 2
eine CSP-Anlage mit zwei parallelen Gießlinien mit verkürzten Ausgleichsöfen und einem in der Linie der CSP-Walzenstraße angeordneten Speicherofen,
Fig. 3
ein Arbeitsdiagramm der Anlage gemäß Fig. 2 in Form eines Weg/Zeit-Netzplanes.
Show it:
Fig. 1
a CSP system with two casting machines and downstream elongate equalizing furnaces as well as with a rolling line arranged between the casting lines and having a CSP roller train,
Fig. 2
a CSP system with two parallel casting lines with shortened equalizing furnaces and a storage furnace arranged in the line of the CSP roller mill,
Fig. 3
a working diagram of the system of FIG. 2 in the form of a path / time network plan.

Die CSP-Anlage gemäß Figur 1 weist zwei identisch gleiche Gießlinien (x-x) und eine Walzlinie (y-y) auf. In jeder Gießlinie (x-x) befindet sich eine Gießmaschine (1a, 1b) und eine dieser nachgeordnete Schere (2a, 2b) zum Unterteilen der Gießstränge in einzelne Dünnbrammen. An diese schließt sich eine lange Ofenanlage an mit je einer Heizzone (3a, 3b), einem Systempuffer (4a, 4b) und einem Speicherofen (5a, 5b). Beim gezeigten Beispiel beträgt die Länge einer Heizzone (3) etwa 40 m, die Länge eines Systempuffers (4) ebenfalls ca. 40 m und die Länge eines Speicherofenteils (5a, 5b) ca. 67 m. Insgesamt beträgt die Länge der beiden parallelen Ausgleichsöfen ca. 147 m. Diesen Öfen ist eine Quertransporteinrichtung mit je einer Fähre (6a, 6b) in einer Länge von ca. 49 m nachgeordnet. Zwischen den beiden Gießlinien (x-x) ist die Walzlinie (y-y) mit dem Halteofen (7) von ca. 49 m Länge, und der Fertigstraße (8) angeordnet. Letztere umfaßt je drei Vorgerüste und drei Fertiggerüste sowie an der Einzugsseite eine Entzunderungseinrichtung (9).The CSP system according to FIG. 1 has two identical casting lines (xx) and one rolling line (yy). In each casting line (xx) there is a casting machine (1a, 1b) and a pair of scissors (2a, 2b) arranged after it for dividing the casting strands into individual thin slabs. This is followed by a long furnace system, each with a heating zone (3a, 3b), a system buffer (4a, 4b) and a storage furnace (5a, 5b). In the example shown, the length of a heating zone (3) is approximately 40 m, the length of a system buffer (4) is also approximately 40 m and the length of a storage furnace part (5a, 5b) is approximately 67 m. Overall, the length of the two parallel equalizing furnaces is approximately 147 m. A transverse transport device, each with a ferry (6a, 6b) with a length of approx. 49 m, is arranged downstream of these furnaces. Between the two pouring lines (xx) the rolling line (yy) with the holding furnace (7) of about 49 m in length, and the finishing train (8). The latter comprises three roughing stands and three finishing stands as well as a descaling device (9) on the feed side.

Die erfindungsgemäß ausgebildete CSP-Anlage gemäß Figur 2 weist in den beiden Gießlinien (x-x) zwei verkürzte Ausgleichsöfen auf, umfassend lediglich die Heizzonen (3a, 3b) und die Systempuffer (4a, 4b). Die Länge einer Heizzone (3a, 3b) beträgt ca. 40 m und eines Systempuffers (4a, 4b) ca. 50 m. Damit ist die Länge der Ofenanlage von 147 m gemäß Figur 1 auf 92 m gemäß Figur 2 verkürzt. Erfindungsgemäß ist der als Speicher ausgebildete Ofenteil (5) innerhalb der Walzlinie (y-y) in seitlichem Abstand neben den Ausgleichsöfen (3a, 4a; 3b, 4b) angeordnet. Insgesamt verkürzt sich dadurch die Länge der Anlage, gemessen von den Scheren (2a, 2b) bis zum Ende des Halteofens (7), von 245 m auf 190 m. Dabei ist die Anordnung so getroffen, daß der Speicherofenteil (5) sich etwa parallel zu den Heiz- und Pufferzonen (3, 4) der Ausgleichsöfen erstreckt. Wie ebenfalls aus der Figur 2 erkennbar, ergibt sich bei diesem Layout der Anlage als weiterer Vorteil ein von 40 m auf ca. 50 m verlängerter Systempuffer (4a, 4b) und ein von 67 m auf 80 m verlängerter Speicherofen (5). Bezüglich der Anordnung der Fähren (6a, 6b) und des Halteofens (7) sowie der Fertigstraße (8) ist die Anlage gemäß Fig. 2 gegenüber der Anlage gemäß Fig. 1 unverändert.The CSP system designed according to the invention according to FIG. 2 has two shortened equalizing furnaces in the two casting lines (x-x), comprising only the heating zones (3a, 3b) and the system buffers (4a, 4b). The length of a heating zone (3a, 3b) is approx. 40 m and a system buffer (4a, 4b) is approx. 50 m. The length of the furnace system is thus reduced from 147 m according to FIG. 1 to 92 m according to FIG. According to the invention, the furnace part (5) designed as a store is arranged within the rolling line (y-y) at a lateral distance next to the compensating furnaces (3a, 4a; 3b, 4b). Overall, the length of the system, measured from the shears (2a, 2b) to the end of the holding furnace (7), is reduced from 245 m to 190 m. The arrangement is such that the storage furnace part (5) extends approximately parallel to the heating and buffer zones (3, 4) of the compensation furnaces. As can also be seen from FIG. 2, with this layout of the system there is a further advantage of a system buffer (4a, 4b) extended from 40 m to approx. 50 m and a storage furnace (5) extended from 67 m to 80 m. With regard to the arrangement of the ferries (6a, 6b) and the holding furnace (7) and the finishing train (8), the system according to FIG. 2 is unchanged from the system according to FIG. 1.

Dabei sieht eine Ausgestaltung vor, daß in wenigstens einer der Gießlinien (x-x), vorteilhaft in beiden, ein zusätzlicher Speicherofenteil (20a, 20b) angeordnet sein kann. Durch diese zusätzlichen Ofenteile wird ohne Verlängerung der Ofenanlage die mögliche Überbrückungszeit beim Stillstand der Walzenstraße, beispielsweise infolge Walzenwechsels oder Störung, um jeweils eine Gießlänge von ca. 50 m, d. h. um zweimal ca. 9 Minuten verlängert.An embodiment provides that in at least one of the casting lines (xx), advantageously in both additional storage furnace part (20a, 20b) can be arranged. With these additional furnace parts, the possible bridging time when the roller mill is at a standstill, for example as a result of roller change or malfunction, is extended by a casting length of approx. 50 m, ie by approx.

In der Figur 3 ist ein Weg/Zeit-Netzplatz dargestellt. In der Kopfzeile sind mit ca. 190 m Gesamtlänge die Heizzone (3), Systempuffer (4), die Fähren (6a und 6b), die zusätzlichen Speicheröfen (20a und 20b) der Gießlinie (x-x) sowie der Speicherofen (5) und Halteofen (7) der Walzlinie (y-y) mit entsprechenden Längenangaben eingetragen. Das Beispiel zeigt zwei Dünnbrammen (2a, 2b) zum Zeitpunkt Null am Ende der Heizzonen (3a und 3b) und zwei Dünnbrammen (1a, 1b) innerhalb der Systempuffer (4a, 4b). Zum Zeitpunkt t = 70 s sind die Dünnbrammen (1a, 1b) bei einer Transportgeschwindigkeit von 0,75 m/s um 52,5 m in die Fähren (6a, 6b) vorgerückt. Zum Zeitpunkt t = 110 s ist die Dünnbramme (1a) in der Fähre (6a) mit der Fährengeschwindigkeit von 0,25 m/s in 40 Sekunden aus der Gießlinie um 10 m in die Walzlinie (y-y) versetzt eingefahren, während die Fähre (6b) unverändert in der zweiten Gießlinie (x-x) stehenbleibt. Zum Zeitpunkt t = 180 s ist dann die Dünnbramme (1a) aus der Fähre (6a) in den Halteofen (7) um weitere 52,5 m transportiert worden. Dort erreicht sie zum Zeitpunkt t = 220 s nach weiteren 30 m Förderweg den Einzug in die Walzenstraße (8). Bei einer Einzugsgeschwindigkeit von 0,29 m/s erfolgt der Durchlauf der Dünnbramme (1a) durch die Fertigstraße (8) in ca. 152 s. Bei einer Gießgeschwindigkeit von etwa 0,1 m/s und der Länge einer Dünnbramme von 44 m benötigt die Produktion eines 44 m langen Gußstranges 440 s. Weil in zwei Gießlinien je ein Gußstrang endlos produziert wird, steht in jeweils einer versetzten Taktfolge von 220 s eine Dünnbramme (1a, 1b) zur Verfügung. Zwischen einer gesamten Walzzeit von 152 s bei einer Produktionszeit von 220 s für je eine Dünnbramme ergibt sich rein rechnerisch nach jedem Walztakt von 152 s eine Pause von ca. 68 s. Dabei ergibt sich eine Taktfolge in der Weise, daß bei t = 450 s jeweils ein Zyklus abgelaufen ist, innerhalb dessen zwei Dünnbrammen produziert und zum Endprodukt gewalzt sind. Wie aus dem Diagramm ersichtlich, wird zwischen t = 0 und t = 440 s jeweils ein Brammenpaar (1a, 1b) bzw. (2a, 2b) gegossen und um 45 m aus einer Heizzone (3a, 3b) in den Systempuffer (4a, 4b) vorgeschoben. Zwischen t = 180 s und t = 220 s wird die Dünnbramme (1b) mit der Fähre (6b) aus der Gießlinie (x-x) in die Walzlinie (y-y) verfahren und sodann zwischen t = 220 s und t = 290 s, d. h. in 70 s, um 52,5 m aus einer Fähre (6a, 6b) entweder rückwärts fahrend in den Speicherofen (5) oder vorwärts fahrend in den Halteofen (7) transportiert Darin wird (1b) bis t = 330 s, d. h. 40 s lang, gehalten und sodann zwischen t = 330 s und t = 370 s um weitere 30 m bis zum Einzug an die Fertigstraße (8) tranportiert. Danach wiederholt sich bei t = 450 s = t-Null der Zyklus, nachdem inzwischen an die Stelle von (2a, 2b) bzw. (1a, 1b) nach einem Zyklus von 450 s die Dünnbrammen (3a, 3b) und (2a, 2b) um ca. 44 m entsprechend der Gießgeschwindigkeit von ca. 0,1 m/s vorgerückt sind.A path / time network location is shown in FIG. In the header with a total length of approx. 190 m are the heating zone (3), system buffer (4), the ferries (6a and 6b), the additional storage furnaces (20a and 20b) of the casting line (xx) as well as the storage furnace (5) and holding furnace (7) of the rolling line (yy) with the corresponding length information. The example shows two thin slabs (2a, 2b) at time zero at the end of the heating zones (3a and 3b) and two thin slabs (1a, 1b) within the system buffers (4a, 4b). At the time t = 70 s, the thin slabs (1a, 1b) advanced by 52.5 m into the ferries (6a, 6b) at a transport speed of 0.75 m / s. At time t = 110 s, the thin slab (1a) in the ferry (6a) entered the rolling line (yy) at a ferry speed of 0.25 m / s in 40 seconds from the casting line by 10 m, while the ferry ( 6b) remains unchanged in the second casting line (xx). At time t = 180 s, the thin slab (1a) was then transported from the ferry (6a) into the holding furnace (7) by a further 52.5 m. There, at time t = 220 s, after a further 30 m of conveying distance, it enters the roller mill (8). At a feed speed of 0.29 m / s, the thin slab (1a) passes through the Finishing line (8) in approx. 152 s. With a casting speed of approximately 0.1 m / s and the length of a thin slab of 44 m, the production of a 44 m long cast strand requires 440 s. Because one casting is continuously produced in two casting lines, a thin slab (1a, 1b) is available in a staggered cycle sequence of 220 s. Between a total rolling time of 152 s and a production time of 220 s for each thin slab, there is a mathematical pause of approx. 68 s after each rolling cycle of 152 s. This results in a cycle sequence in such a way that at t = 450 s each cycle has run, within which two thin slabs are produced and rolled into the end product. As can be seen from the diagram, a pair of slabs (1a, 1b) or (2a, 2b) is poured between t = 0 and t = 440 s and 45 m from a heating zone (3a, 3b) into the system buffer (4a, 4b) advanced. Between t = 180 s and t = 220 s, the thin slab (1b) is moved by ferry (6b) from the casting line (xx) into the rolling line (yy) and then between t = 220 s and t = 290 s, ie in 70 s, transported by 52.5 m from a ferry (6a, 6b) either driving backwards into the storage furnace (5) or moving forward into the holding furnace (7) In which (1b) up to t = 330 s, ie 40 s long , held and then transported between t = 330 s and t = 370 s by a further 30 m until it moves into the finishing train (8). Thereafter, the cycle repeats at t = 450 s = t-zero, after which instead of (2a, 2b) or (1a, 1b) after a cycle of 450 s the thin slabs (3a, 3b) and (2a, 2b) have advanced by approx. 44 m corresponding to the casting speed of approx. 0.1 m / s.

Aus dem Diagramm der Figur 3 geht hervor, daß das Arbeitsverfahren der erfindungsgemäßen Anlage einen zügigen Ablauf aufweist, wobei zwischen jeweils zwei Walztakten von rein rechnerisch zusammen 304 s eine Zwischenzeit von 136 s bzw. 2 x 86 s übrig ist. Die sich hieraus ergebenden Leerlaufzeiten gestatten es, daß die Antriebs-Aggregate der Fertigstraßengerüste während jedes Walzvorganges von 152 s Dauer in einer Hochleistungsstufe betrieben werden können, ohne daß die Elektromotoren thermisch überlastet werden. Das Diagramm zeigt aber andererseits, daß die Zuschaltung einer dritten Gießlinie nicht mehr in den Funktionsablauf passen würde. Mit der Unterbringung von genügend Speicherkapazität innerhalb der Anlage kann die erfindungsgemaß ausgelegte Ofenanlage bei verkürztem Layout genügend überbrückungszeit zur Verfügung stellen, um bei durch Walzenwechsel oder aus anderen Gründen sich ergebenden Stillstandszeiten der Walzenstraße eine ununterbrochene Produktion der Gießmaschinen zumindest bis zum Ende einer oder zweier Gießchargen zu gewährleisten.It can be seen from the diagram in FIG. 3 that the working method of the plant according to the invention has a rapid sequence, with an intermediate time of 136 s or 2 x 86 s remaining between every two rolling cycles of purely mathematically 304 s. The resulting idle times allow the drive units of the finishing mill stands to be operated in a high-performance stage during each 152 s rolling process without the electric motors being thermally overloaded. On the other hand, the diagram shows that the connection of a third casting line would no longer fit into the functional sequence. By accommodating sufficient storage capacity within the system, the furnace system designed according to the invention can provide sufficient bridging time with a shortened layout in order to ensure continuous production of the casting machines at least until the end of one or two casting batches in the event of downtimes of the roller train resulting from roller changes or other reasons guarantee.

Claims (7)

Verfahren zur Herstellung von warmgewalzten Bändern oder Profilen aus endlos stranggegossenem Vormaterial in aufeinanderfolgenden Arbeitsschritten einer Fertigstraße, wobei das in einer oder mehreren Gießmaschinen endlos stranggegossene Vormaterial nach Erstarrung in Strangstücke zerteilt und diese im Durchlauf durch einen Ausgleichsofen zuerst in einer Heizzone auf Walztemperatur erwärmt, sodann in eine Pufferzone und danach in eine Speicherzone und aus dieser in die Fertigstraße überführt und darin fertiggewalzt werden, dadurch gekennzeichnet, daß Strangstücke aus der Pufferzone in eine Fähre eingefahren und mit dieser im Quertransport aus der Gießlinie in die Walzlinie überführt, darin im Längstransport entgegengesetzt zur Förderrichtung des stranggegossenen Vormaterials unter Verwendung eines neben dem Ausgleichsofen in der Walzlinie angeordneten Speicherofens gespeichert und nach Abruf aus dem Speicherofen über eine Fähre und fallweise über einen dieser nach- und der Walzenstraße vorgeordneten Halteofen in die Walzenstraße eingeführt und darin zum Endprodukt fertiggewalzt werden.Process for the production of hot-rolled strips or profiles from continuous, continuously cast stock in successive steps of a finishing train, whereby the continuously cast in one or more casting machines, after solidification, is divided into strands and first heated to rolling temperature in a heating zone, then in a heating zone a buffer zone and then into a storage zone and from there into the finishing train and finish-rolled, characterized in that strand pieces from the buffer zone are driven into a ferry and transferred with it in transverse transport from the casting line to the rolling line, therein in the longitudinal transport opposite to the conveying direction of the continuously cast primary material is stored using a storage furnace arranged next to the compensating furnace in the rolling line and after being called up from the storage furnace via a ferry and occasionally via one of these d the holding furnace upstream of the rolling mill is introduced into the rolling mill and finished rolled into the end product. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein Strangstück nach Entnahme aus der Pufferzone zunächst innerhalb der Gießlinie im Längstransport über eine Fähre in einen Speicherofen und nach Abruf aus dem Speicherofen wieder in die Fähre zurücktransportiert und mit dieser im Quertransport aus der Gießlinie in die Walzlinie eingefahren und darin im Vorwärts-Längstransport über den Halteofen zum Fertigwalzen in die Walzenstraße eingeführt wird.Method according to claim 1, characterized in that, after removal from the buffer zone, a strand piece is first transported within the casting line in the longitudinal transport via a ferry into a storage furnace and after retrieval from the storage furnace back into the ferry and with it in transverse transport from the casting line the rolling line is retracted and inserted into the roller mill in the forward longitudinal transport via the holding furnace for finish rolling. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein Strangstück nach Entnahme aus der Pufferzone zunächst innerhalb der Gießlinie im Längstransport über eine Fähre in einen Speicherofen und nach Abruf aus dem Speicherofen wieder in die Fähre zurücktransportiert und mit dieser im Quertransport aus der Gießlinie in die Walzlinie überführt und darin zuerst im Rückwärts-Längstransport in einen Speicherofen eingelagert und nach Abruf aus diesem im Vorwärts-Längstransport über die Fähre und den Halteofen zum Fertigwalzen in die Walzenstraße eingeführt wird.A method according to claim 1, characterized in that, after removal from the buffer zone, a strand piece is first transported longitudinally within the casting line via a ferry into a storage furnace and after retrieval from the storage furnace back into the ferry and with it in cross transport from the casting line to the rolling line transferred and stored therein first in the backward longitudinal transport in a storage furnace and, after being called up, is inserted in the forward longitudinal transport via the ferry and the holding furnace for finishing rolling into the rolling mill. Anlage zur Herstellung von warmgewalzten Bändern oder Profilen aus endlos stranggegossenem Vormaterial in aufeinanderfolgenden Arbeitsschritten einer Fertigstraße, zur Durchführung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, umfassend zwei CSP-Gießmaschinen bzw. Gießlinien mit jeweils einem Ausgleichsofen und je einer Fähre, sowie eine relativ zu den Gießlinien seitenversetzte, einen Halteofen aufweisende CSP-Walzenstraße, wobei jeder Ausgleichsofen eine Heizzone, einen Systempuffer sowie einen als Speicher ausgebildeten Ofenteil zum Überbrücken von Stillstandszeiten der Walzenstraße bei fortgesetzter Erzeugung von Endlos-Stranggußmaterial aufweist, dadurch gekennzeichnet, daß der als Speicher ausgebildete Ofenteil (5) innerhalb der Walzlinie (y-y) in seitlichem Abstand neben den Ausgleichsöfen (3a, 3b; 4a, 4b) der Gießlinien (x-x) angeordnet ist.Plant for the production of hot-rolled strips or profiles from endless continuously cast material in successive steps of a finishing train, for carrying out the method according to one or more of the preceding claims, comprising two CSP casting machines or casting lines, each with a compensating furnace and a ferry, and a relative CSP roller mill offset to the casting lines, with a holding furnace, each compensating furnace having a heating zone, a system buffer and a furnace part designed as a store for bridging downtimes of the roll train with continued production of continuous continuous casting material, characterized in that the furnace part designed as a store has (5) within the rolling line (yy) at a lateral distance next to the equalizing furnaces (3a, 3b; 4a, 4b) of the casting lines (xx) is arranged. Anlage nach Anspruch 4, dadurch gekennzeichnet, daß der Speicherofenteil (5) sich etwa parallel entlang den Heiz- und Pufferzonen (3a, 3b bzw. 4a, 4b) der Ausgleichsöfen erstreckt.System according to claim 4, characterized in that the storage furnace part (5) extends approximately parallel along the heating and buffer zones (3a, 3b or 4a, 4b) of the compensating furnaces. Anlage nach Anpruch 4 oder 5, dadurch gekennzeichnet, daß in wenigstens einer der Gießlinien (x-x), vorzugsweise in beiden, ein zusätzlicher Speicherofenteil (20a) bzw. (20b), vom Ausgleichsofen (3, 4) durch einen den Fähren (6a bzw. 6b) entsprechenden Längsabstand getrennt, angeordnet ist.Plant according to claim 4 or 5, characterized in that in at least one of the casting lines (xx), preferably in both, an additional storage furnace part (20a) or (20b) from the compensating furnace (3, 4) by one of the ferries (6a or 6b) the corresponding longitudinal distance is arranged separately. Anlage nach Anspruch 6, dadurch gekennzeichnet, daß sich die zusätzlichen Speicherofenteile (20a) bzw. (20b) innerhalb der Gießlinien (x-x) etwa parallel entlang dem in der Walzlinie (y-y) befindlichen Halteofen (7) erstrecken.Installation according to claim 6, characterized in that the additional storage furnace parts (20a) or (20b) extend approximately parallel within the casting lines (x-x) along the holding furnace (7) located in the rolling line (y-y).
EP93116476A 1992-10-13 1993-10-12 Method and device for making hot-rolled strips or beams from continuously cast material Expired - Lifetime EP0593001B1 (en)

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EP0413169A1 (en) * 1989-08-17 1991-02-20 Sms Schloemann-Siemag Aktiengesellschaft Production line for making steel plate
DE4017928A1 (en) * 1990-06-05 1991-12-12 Schloemann Siemag Ag METHOD AND SYSTEM FOR THE PRODUCTION OF HOT-ROLLED TAPES OR PROFILES FROM CONTINUOUSLY PRE-MATERIAL

Cited By (16)

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CN1047112C (en) * 1994-06-18 1999-12-08 冶金工业部北京钢铁设计研究总院 Short-flow hot steel bloom conveying method and equipment
EP0893167A2 (en) * 1997-07-17 1999-01-27 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill
EP0893167A3 (en) * 1997-07-17 2000-04-19 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill
AT407348B (en) * 1997-10-10 2001-02-26 Voest Alpine Ind Anlagen METHOD FOR PRODUCING A HOT ROLLED PRODUCT AND SYSTEM FOR IMPLEMENTING THE METHOD
NL1007730C2 (en) * 1997-12-08 1999-06-09 Hoogovens Staal Bv Apparatus and method for manufacturing a steel strip.
WO1999029445A1 (en) * 1997-12-08 1999-06-17 Corus Staal B.V. Device and process for producing a steel strip
US6457227B1 (en) 1997-12-08 2002-10-01 Corus Staal Bv Device and process for producing a steel strip
EP0947590A1 (en) * 1998-03-31 1999-10-06 Sms Schloemann-Siemag Aktiengesellschaft Method of manufacturing micro-alloyed construction steels
WO2009030190A1 (en) * 2007-09-06 2009-03-12 Sms Siemag Ag Device for transferring continuous casting slabs
US8205660B2 (en) 2007-09-06 2012-06-26 Sms Siemag Ag Device for transferring continuous casting slabs
DE102011003146A1 (en) 2011-01-26 2012-07-26 Sms Siemag Ag Transport system and method for transporting rolling stock between at least two processing lines
WO2012101210A1 (en) 2011-01-26 2012-08-02 Sms Siemag Ag Transporting system and method for transporting stock to be rolled between at least two processing lines
ITUD20130127A1 (en) * 2013-10-04 2015-04-05 Danieli Off Mecc STEEL PLANT FOR THE PRODUCTION OF LONG METAL PRODUCTS AND ITS PRODUCTION METHOD
WO2015049669A1 (en) * 2013-10-04 2015-04-09 Danieli & C. Officine Meccaniche Spa Steel plant for the production of long metal products and corresponding production method
EP3055082B1 (en) 2013-10-04 2018-06-13 Danieli & C. Officine Meccaniche, S.p.A. Steel plant for the production of long metal products and corresponding production method
US10343200B2 (en) 2013-10-04 2019-07-09 Danieli & C. Officine Meccaniche S.P.A. Steel plant for the production of long metal products and corresponding production method

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KR940008760A (en) 1994-05-16
US5560095A (en) 1996-10-01
EP0593001B1 (en) 1997-02-05
KR960016454B1 (en) 1996-12-12
CN1086466A (en) 1994-05-11
TW263451B (en) 1995-11-21
RU2108877C1 (en) 1998-04-20
JPH06190401A (en) 1994-07-12
ATE148645T1 (en) 1997-02-15
CA2108239A1 (en) 1994-04-14
DE59305386D1 (en) 1997-03-20
DE4234454A1 (en) 1994-04-14
ES2098622T3 (en) 1997-05-01
CN1047334C (en) 1999-12-15

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