EP1991379B1 - Dispositif de coulee continue et procede pour faire fonctionner un dispositif de coulee continue - Google Patents

Dispositif de coulee continue et procede pour faire fonctionner un dispositif de coulee continue Download PDF

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Publication number
EP1991379B1
EP1991379B1 EP07723100.9A EP07723100A EP1991379B1 EP 1991379 B1 EP1991379 B1 EP 1991379B1 EP 07723100 A EP07723100 A EP 07723100A EP 1991379 B1 EP1991379 B1 EP 1991379B1
Authority
EP
European Patent Office
Prior art keywords
strip
continuous casting
casting plant
driving
strand
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.)
Not-in-force
Application number
EP07723100.9A
Other languages
German (de)
English (en)
Other versions
EP1991379A1 (fr
Inventor
Jörg BAUSCH
Bernd Leifeld
Jürgen Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP1991379A1 publication Critical patent/EP1991379A1/fr
Application granted granted Critical
Publication of EP1991379B1 publication Critical patent/EP1991379B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/043—Curved moulds
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/201—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided from above, e.g. by ceilings of buildings

Definitions

  • the invention relates to a continuous casting plant, in particular for continuous casting of thin slabs, which has a vertically disposed below a mold strand guide, wherein below the strand guide means for driving the cast strand and bending thereof are arranged in the horizontal. Furthermore, the invention relates to a method for operating a continuous casting plant.
  • Starting point for this type of continuous casting plants are sheet plants or vertical turning plants with a casting radius usually between seven and twelve meters for larger casting thicknesses, in which the strand is bent or directed with liquid core.
  • CSP C ompact S P roduction trip
  • a thickness usually between 45 and 70 mm, occasionally up to 90 mm is.
  • the design of the vertical plant is widespread, in which the cast strand is bent and directed only after the solidification.
  • An advantage of the CSP systems is that the design of the system can be kept simple, especially regarding the strand guide. For example, in a strand breakthrough below the mold, the mold and the affected strand guide elements can be removed or replaced with a crane upwards. The cost of the change and thus the loss of production here are much lower than when using conventional arc segments that can not be upgraded.
  • a further advantage is that the strand is not bent or straightened until its final solidification. Therefore, the strand elongations are smaller; it is not to be feared that the sensitive inner side of the strand ruptures.
  • Fig. 1 Such a prior art continuous casting plant 1 is shown. From a mold 2, cast steel passes vertically downwards, the strand 6 thus produced being guided along a strand guide 3. Until the strand 6 leaves the strand guide 3 down, it is essentially solidified. It passes below the strand guide 3 in an area which are equipped with means 4, 5 for the combined driving and bending of the strand 6. To recognize are in the conveying direction of the strand 6, first two bending drivers that drive the strand 6 both in the conveying direction than apply it also with bending forces. The rollers of the bending driver 4, 5 are provided by moving means 11. The following rollers bend the strand 6 further in the direction of the horizontal H. Finally, the strand 6 leaves the system in the horizontal direction H to corresponding downstream devices. Only schematically illustrated is the cooling chamber 12 for cooling the strand 6.
  • the available height of the strand guide it is desirable for the available height of the strand guide to be as large as possible and - for a given system height - the height of the bend of the strand to be as small as possible. Then that is the maximum way for the solidification of the strand before along the strand guide 3 before.
  • the object of the present invention to develop a continuous casting of the type mentioned above and to provide a corresponding method for operating a continuous casting that it is possible, the maximum height of the strand guide at the smallest height for driving, bending and straightening the cast Strand to use.
  • the range of driving and bending should therefore be shortened in favor of a prolonged strand management.
  • the solution of this object by the invention is device technology characterized in that below the lower end of the strand guide of the continuous casting a means for exclusively driving the cast strand and below the means for driving a means for exclusively bending the cast strand is arranged.
  • the means for exclusively driving the cast strand has at least one pair of rollers, which along the direction transverse to the conveying direction of the strand a plurality of successive and mounted by center bearings part rolls.
  • the means for exclusively driving the cast strand preferably consists only of a single pair of driven rollers. Only a single pair of rollers has proven sufficient and saves height for the driver, in favor of strand leadership.
  • the means for exclusively driving the cast strand are fastened to a segment frame situated above this means, preferably releasably (eg by a screw connection) is.
  • a segment frame situated above this means preferably releasably (eg by a screw connection) is.
  • the means for exclusively driving the cast strand is housed according to a very advantageous development, at least partially in a cassette which is arranged detachably in the continuous casting.
  • the at least one pair of rollers is completely housed in the cassette.
  • At least one roller of the roller pair or the roller pair can be moved in total via a moving means in the direction normal to the surface of the strand.
  • a moving means in the direction normal to the surface of the strand.
  • the role of the fixed side can be moved by hydraulic cylinders.
  • the said movement may be required both to place the driver just below the strand guide and in alignment with the casting strand.
  • this movement means but also a loading of the rollers carried on the strand surface.
  • the rollers of the means for driving the strand can be subjected to force, optionally via separate force-generating elements, in the direction normal to the surface of the strand.
  • the required contact force is generated, which is necessary for the transmission of a conveying movement.
  • the force generating elements can be supported on the framework of the continuous casting plant or on a component firmly connected thereto. But it is possible that the force-generating elements are supported on the cassette.
  • the cylinders for pressing the driver rollers to the strand can thus be fixed alternatively in the cassette or on the mainland, in particular in the cooling chamber of the continuous casting plant.
  • the cylinder can be flanged to the cassette. This results in the advantage that without a cylinder, the driver cartridge fits through the tightly inserted 4-eccentric oscillation frame, which facilitates assembly and disassembly.
  • the continuous casting plant further comprises a cooling chamber - as it is usual, as is said - and the means for exclusively driving the cast strand is arranged in the cooling chamber. It can be provided in particular that the lower bottom of the cooling chamber extends below the means for driving the cast strand and above the means for bending the cast strand.
  • the method for operating such a continuous casting plant, in particular for producing thin slabs is characterized in that the cast strand is first guided vertically down through the strand guide and then the strand below the lower end of the strand guide by means of exclusively driving the strand is downwardly conveyed, wherein the strand is then bent by a means for exclusively bending the strand from the vertical to the horizontal.
  • the strand is preferably cooled in the region below the strand guide up to its outlet into the horizontal only in the region of the means for exclusive driving.
  • the means for driving therefore only serve to drive the hot and cold strand.
  • the means for bending only perform the functions of bending the strand, separating the hot strand from the cold strand, driving the dummy strand and supporting the hot strand.
  • the strand In the field of strand guidance, the strand is not conveyed by driven rollers.
  • the promotion is carried out exclusively by means of exclusive activity.
  • the driver cassette By accommodating the means for driving only in a cassette and placing the cassette in the cooling chamber, the driver cassette can be changed up like a segment of the strand guide through the opening of the oscillating frame. This is easier and faster possible than the horizontal change of the individual driver roles, as has been done so far.
  • the bending roller does not always have to be changed together with the driver role. This is advantageous because the driver rollers are subject to higher wear. It can be done with the solution according to the invention proposal rather needs a change of roles of drivers (especially by changing the vertical cartridge) and benders (namely by horizontal change of bending rollers). Furthermore, the driver cartridge can be changed as needed, regardless of the segments arranged above the strand guide.
  • the driver rolls are thus in the proposed solution before the strand arc.
  • the additional space for the strand guide is obtained by reducing the diameter of the preferably multiply divided rollers and by reducing the distances, in particular also by the fact that the driver rollers are arranged in the cooling chamber.
  • the bending forces are absorbed by the driver rollers and do not get into the strand guide.
  • the bending segment can be expanded upwards like the strand guide segments.
  • FIGS. 2 and 3 is in synopsis the previously known solution according to Fig. 1 (in Fig. 2 ) and an inventive embodiment of a continuous casting 1 (in Fig. 3 to see). It can be seen first that at the same height of the plant, the length of the strand guide 3 below the mold 2 in the new solution is greater, whereby the above advantages are achieved. In the exemplary embodiment results in a 1,000 mm longer strand guide. This is achieved by immediately below the strand guide 3, a means 4 for exclusively driving the strand 6 is arranged, below which there is a means 5 for exclusively bending the strand 6. It is therefore - in contrast to the previously known solutions - no bending driver for the combined driving and bending of the strand longer available.
  • the bending radius is also between 2.5 and 3.5 meters, making it significantly smaller than in bowing machines or vertical turn-off systems.
  • Fig. 4 shows, only a single pair of rollers 7, 8 in the means 4 for exclusively driving the strand 6 is present. Still goes out Fig. 4 clearly shows that the cooling chamber 12 is placed here so that the means 4 are arranged above the bottom 13 of the cooling chamber 12, wherein the means 5 are positioned below the bottom 13, ie outside the cooling chamber.
  • Fig. 5 results, the entire deflection of the strand 6 from the vertical V in the horizontal H free of means for driving. Only after the strand 6 has substantially reached the horizontal H, driver or rolling stands 14 are present. This means that the strand 6 from the strand guide 3, in which there are no driven rollers themselves, are expelled only by the means 4 and no further drivers are present until the deflection of the strand 6 into the horizontal H.
  • FIGS. 6 and 7 are still some details of the means 4 for exclusively driving the strand 6 shown. Shown is the lowest part of the strand guide 3, below which immediately connect the means 4 for driving. Only indicated are the rollers 7 and 8 of the means 4, that is, the rollers of the single pair of rollers in the means 4th
  • rollers 7, 8 are basically constructed in the same way as the rollers 15, 16 of the strand guide 3 to be seen above.
  • the rolls of the strand guide consist of several sub-rolls 15 ', 15 ", 15” arranged transversely to the strand 6 in the direction Q transverse to one another. or 16 ', 16 ", 16"'.
  • the roles are supported by center bearings 9. This results in the possibility that the diameter of the rollers can be made smaller without having to accept disadvantages with respect to the deflection of the rollers. While usually rollers with a diameter of about 300 to 420 mm are common, can be used hereby rolls having a diameter of less than 300 mm. The higher (bending) forces in the rollers due to the smaller distances are easily absorbed by the center bearings 9.
  • the rollers 7, 8 of the means 4 are housed in a cassette 10.
  • This cassette can be assembled and disassembled as a whole.
  • the adjustment of the position of the rollers 7, 8 takes place with means of movement 11, of which only one is shown in the form of a hydraulic piston-cylinder system.
  • the productivity of the continuous casting machine can be substantially increased. It is also possible to set the system faster to other production conditions or to assemble and disassemble components of the system.
  • the mentioned extension of the strand guide by 1,000 millimeters provided the opportunity to work with a higher casting speed, wherein in one embodiment a casting speed of up to 6 m / min was achieved.
  • the thickness of the strand was in the range between 52 and 62 mm.
  • the productivity could be increased by more than 10%.
  • the said vertical change possibility by the Oszillationsrahmen has proved to be particularly advantageous.

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

Claims (11)

  1. Installation de coulée continue (1) qui présente un guidage de barre (3) orienté à la verticale, disposé en dessous d'une lingotière (2), dans laquelle, en dessous du guidage de barre (3), sont disposés des moyens (4, 5) destiné à l'entraînement de la barre coulée (6) et le cintrage de cette dernière à l'horizontale (H) et dans laquelle, en dessous de l'extrémité inférieure du guidage de barre (3), sont disposés un moyen (4) destiné à l'entraînement exclusif de la barre coulée (6) et, en dessous du moyen (4) destiné à l'entraînement, un moyen (5) destiné au cintrage exclusif de la barre coulée (6), et l'installation de coulée (1) présente, dans la zone du guidage de barre (3), un mécanisme de refroidissement sous la forme d'une chambre de refroidissement (12), caractérisée en ce qu'un moyen (4) destiné à l'entraînement exclusif et le moyen destiné au cintrage exclusif de la barre coulée (6) sont subdivisés en éléments séparés, le moyen (4) destiné à l'entraînement exclusif étant disposé dans la chambre de refroidissement (12) et étant constitué d'une paire unique de rouleaux entraînés (7, 8) qui sont montés au moins en partie dans une cassette (10) et la cassette (10) étant disposée de manière amovible à l'intérieur de l'installation de coulée continue (1).
  2. Installation de coulée continue selon la revendication 1, caractérisée en ce que le moyen (4) destiné à l'entraînement exclusif de la barre coulée (6) présente au moins une paire de rouleaux (7, 8) qui présente, le long de la direction (Q) s'étendant transversalement par rapport à la direction de transport de la barre (6), plusieurs rouleaux partiels qui se succèdent et qui sont montés via des paliers centraux (9).
  3. Installation de coulée continue selon l'une quelconque des revendications 1 à 2, caractérisée en ce que le moyen (4) destiné à l'entraînement exclusif de la barre coulée (6) est fixé de manière amovible à un cadre segmenté se trouvant au-dessus du moyen (4).
  4. Installation de coulée continue selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'au moins une paire de rouleaux (7, 8) est montée complètement dans la cassette (10).
  5. Installation de coulée continue selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'au moins un rouleau (7, 8) de la paire de rouleaux peut être soumis à un déplacement via un moyen de déplacement (11) dans une direction (N) perpendiculaire à la surface de la barre (6).
  6. Installation de coulée continue selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les rouleaux (7, 8) du moyen (4) destiné à l'entraînement de la barre (6) peuvent être sollicités par force via des éléments de génération de force dans une direction (N) perpendiculaire à la surface de la barre (6).
  7. Installation de coulée continue selon la revendication 6, caractérisée en ce que les éléments de génération de force s'appuient contre le bâti de l'installation de coulée continue ou contre un élément relié à demeure à ce dernier.
  8. Installation de coulée continue selon la revendication 6, caractérisée en ce que les éléments de génération de force s'appuient contre la cassette (10).
  9. Installation de coulée continue selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la base inférieure (13) de la chambre de refroidissement (12) s'étend en dessous du moyen (4) destiné à l'entraînement de la barre coulée (6) et au-dessus du moyen (5) destiné au cintrage de la barre coulée (6).
  10. Procédé pour l'exploitation d'une installation de coulée continue (1) selon l'une quelconque des revendications 1 à 9 pour la production d'une barre coulée (6), dans lequel l'installation de coulée continue (1) présente un guidage de barre (3) s'étendant à la verticale disposé en dessous d'une lingotière (2), dans lequel en dessous du guidage de barre (3), sont disposés des moyens (4, 5) destiné à l'entraînement de la barre coulée (6) et destiné au cintrage de celle-ci à l'horizontale (H), et un mécanisme de refroidissement sous la forme d'une chambre de refroidissement (12), dans lequel la barre coulée (6) est d'abord guidée à la verticale vers le bas via le guidage de barre (3), la barre (6) étant ensuite transportée vers le bas en dessous de l'extrémité inférieure du guidage de barre (3) via des moyens (4) destiné à l'entraînement exclusif de la barre (6) et dans lequel la barre (6) est ensuite cintrée via un moyen (5) destiné au cintrage exclusif de la barre (6) de la verticale (V) à l'horizontale (H), caractérisé en ce que les moyens (4) destiné à l'entraînement exclusif et les moyens destiné au cintrage exclusif de la barre (3) sont subdivisés en éléments séparés, et le moyen unique (4) est disposé dans la chambre de refroidissement et le moyen (4) constitué par seulement une paire, de rouleaux entraînés (7, 8) transporte la barre (6), dans lequel ladite une paire de rouleaux (7, 8) est montée au moins en partie dans une cassette (10), qui est montée et démontée en entier dans l'installation de coulée continue (1), et la barre (6) est refroidie, dans la zone située en dessous du guidage de barre (3) jusqu'à sa sortie à l'horizontale (H), uniquement dans la zone du moyen (4) destiné à l'entraînement exclusif.
  11. Procédé selon la revendication 10, caractérisée en ce qu'on ne procède à aucun transport de la barre (6) dans la zone de cintrage de la barre (6) de la verticale (V) à l'horizontale (H).
EP07723100.9A 2006-03-09 2007-03-08 Dispositif de coulee continue et procede pour faire fonctionner un dispositif de coulee continue Not-in-force EP1991379B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102006011385 2006-03-09
DE102006053016 2006-11-10
DE102006055443 2006-11-24
DE102007005778A DE102007005778A1 (de) 2006-03-09 2007-02-06 Stranggießanlage und Verfahren zum Betreiben einer Stranggießanlage
PCT/EP2007/002005 WO2007101685A1 (fr) 2006-03-09 2007-03-08 Dispositif de coulee continue et procede pour faire fonctionner un dispositif de coulee continue

Publications (2)

Publication Number Publication Date
EP1991379A1 EP1991379A1 (fr) 2008-11-19
EP1991379B1 true EP1991379B1 (fr) 2017-01-04

Family

ID=38055334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723100.9A Not-in-force EP1991379B1 (fr) 2006-03-09 2007-03-08 Dispositif de coulee continue et procede pour faire fonctionner un dispositif de coulee continue

Country Status (8)

Country Link
US (1) US8100166B2 (fr)
EP (1) EP1991379B1 (fr)
JP (1) JP2009529426A (fr)
KR (1) KR20080103522A (fr)
CA (1) CA2642919A1 (fr)
DE (1) DE102007005778A1 (fr)
MX (1) MX2008011463A (fr)
WO (1) WO2007101685A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101482334B1 (ko) * 2012-12-21 2015-01-13 주식회사 포스코 연속주조용 세그먼트
DE102014224390A1 (de) 2014-11-28 2016-06-02 Sms Group Gmbh Stranggießanlage für Dünnbrammen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1222337A (en) * 1969-01-27 1971-02-10 Fives Lille Cail Continuous casting installation
USB396916I5 (fr) * 1973-09-13 1976-03-02
JPS5850156A (ja) * 1981-09-04 1983-03-24 Nippon Steel Corp 低機高、多点矯正彎曲型連続鋳造機
AT372025B (de) * 1982-01-12 1983-08-25 Voest Alpine Ag Stranggiessanlage
EP0535368B1 (fr) * 1991-09-19 1996-06-05 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif de coulée continue d'un lingot métallique
DE19637545B4 (de) * 1996-09-14 2007-10-18 Sms Demag Ag Vorrichtung zur Umleitung eines in einer Stranggießkokille gegossenen Dünnbrammenstranges aus der Vertikalen in eine horizontale Ausförderrichtung
DE19838774A1 (de) * 1998-08-26 2000-03-02 Schloemann Siemag Ag Strangabzugsverfahren und hiermit korrespondierende Bogenstranggießanlage
DE10024508A1 (de) * 2000-05-18 2001-11-22 Sms Demag Ag Verfahren und Anlage zum Stranggießen von Brammen, insbesondere von Dünnbrammen mit vergleichsweise hohen Gießgeschwindigkeiten
DE10049445A1 (de) * 2000-10-06 2002-04-18 Sms Demag Ag Vorrichtung zum Stranggießen von Metallen, insbesondere von Stahl für das Solidified-Bending-Verfahren
DE10206243A1 (de) * 2002-02-15 2003-08-28 Sms Demag Ag Verfahren zum Endloswalzen eines im Querschnitt als Dünnbramme bemessenen, mit Gießgeschwindigkeit erzeugten Metallstrangs, insbesondere eines Stahlstrangs, und zugehörige Stranggießmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CA2642919A1 (fr) 2007-09-13
US8100166B2 (en) 2012-01-24
JP2009529426A (ja) 2009-08-20
MX2008011463A (es) 2008-09-24
US20090020259A1 (en) 2009-01-22
KR20080103522A (ko) 2008-11-27
DE102007005778A1 (de) 2007-09-13
EP1991379A1 (fr) 2008-11-19
WO2007101685A1 (fr) 2007-09-13

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