EP0323958B1 - Dispositif de coulee continue de brames plates - Google Patents

Dispositif de coulee continue de brames plates Download PDF

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Publication number
EP0323958B1
EP0323958B1 EP87905187A EP87905187A EP0323958B1 EP 0323958 B1 EP0323958 B1 EP 0323958B1 EP 87905187 A EP87905187 A EP 87905187A EP 87905187 A EP87905187 A EP 87905187A EP 0323958 B1 EP0323958 B1 EP 0323958B1
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EP
European Patent Office
Prior art keywords
casting
cross
mould
section
pouring
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.)
Expired - Lifetime
Application number
EP87905187A
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German (de)
English (en)
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EP0323958A1 (fr
Inventor
Hans Schrewe
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Vodafone GmbH
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Mannesmann AG
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT87905187T priority Critical patent/ATE64115T1/de
Publication of EP0323958A1 publication Critical patent/EP0323958A1/fr
Application granted granted Critical
Publication of EP0323958B1 publication Critical patent/EP0323958B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B22D11/0408—Moulds for casting thin slabs

Definitions

  • the present invention relates to a device for the continuous casting of flat slabs according to the preamble of claim 1.
  • a continuous casting mold of this type is known from GB-A-11 99 805, where not only the cross-sectional shape, but also the cross-section itself remains the same from the inlet side to the outlet side of the mold.
  • the final strand cross-sectional shape is formed solely by the rollers arranged after the mold.
  • a mold is known from DE-A1-34 00 220, which has the disadvantage that strong bending stresses of the strand shell occur at the transition from the pouring area which increases the cross-section to the desired strand format within the mold.
  • the forming angle ⁇ must be kept small and, on the other hand, the casting and cooling speed must be selected within such narrow limits that the strand neck can be removed without cracks.
  • there is a strong friction at the transition which can only be reduced to a limited extent by the lubrication already known.
  • the known mold has the further disadvantage that under Maintaining a small Umforwinkel ⁇ , preferably ⁇ 10 °, the mold must be made the longer, the smaller the thickness of the slab should be.
  • the object of the present invention is to provide a method and a device with which steel slabs with thicknesses below 80 mm can be produced without defects and with a high surface quality.
  • the degree of bulging is chosen according to the invention so that, depending on the outside diameter of the pouring tube used, a minimum distance of 20 mm from the apex of the bulging on the pouring side is maintained at the level of the pouring level.
  • the lines of the transition from the bulge to the part lying in the plane of the slab surface are tapered. In the longitudinal direction, the taper is adapted to the cross-sectional enlargement of the bulged area and is below a value of 1.2%.
  • the supporting and guiding means arranged downstream of the mold are characterized in that at least one roller of at least one pair of rollers has a caliber adapted to the emerging strand.
  • the individual rollers can have a cylindrical or conical or spherical shape. They are resiliently suspended in a guide frame and hydraulically adjustable transversely to the casting axis. In order that the cold start-up line can pass the deformation section without problems, an already known electronic path control is used to adjust the rollers.
  • the required deformation of the strand format emerging from the mold is carried out according to the invention in such a way that the distance between a pair of rollers lying between two pairs of rollers in the casting direction is reduced between 0.5 and 25 mm.
  • This range of delivery of the rolls is necessary so that the material-specific and dimensional requirements with regard to freedom from cracks can be taken into account.
  • the alignment of the bulge of the strand format emerging from the mold to the desired strand format is preferably distributed over a total length of over 1.5 m, in such a way that the strand cross section is completely solidified only after leaving the deformation zone, the 1.5 m a reduction in the distance of the roller pairs of 25 mm are assigned.
  • the rollers forming the caliber can be provided with an individual drive.
  • Fig. 1 shows a longitudinal section through the continuous caster according to the invention for the continuous casting of slabs with a considerably greater width than thickness, in particular steel slabs with a thickness of less than 80 mm, with melt from a casting vessel 1 through a pouring tube 2, which is immersed in the casting level 4, one Mold 3 is fed.
  • the mold 3, which is fastened on a frame structure 5, can be moved oscillatingly in the casting direction, as indicated by the arrows 6.
  • the arched strand format 7 emerging from the mold 3 is reshaped according to the invention by the downstream support and guide means 8 such that the strand shell 10 lies in the middle region in the plane of the slab surface of the edge region 11.
  • the downstream support and guide means 8 such that the strand shell 10 lies in the middle region in the plane of the slab surface of the edge region 11.
  • the arched-out die cut 12, 13 in the central region and the narrow side walls 14 corresponding to the desired strand format 11 form the mold-side and outlet-side molding space.
  • the arrows 15, 16 are intended to indicate that both the longitudinal side walls 14 and the wide side walls 17 are displaceable, so that the desired strand exit format 7 can be set variably.
  • the dimensions of the pouring tube 2 used and the bulge 12 which increases the cross section in the central region on the pouring side are related to one another, specifically in accordance with the invention in such a way that a minimum distance between the outer periphery 18 of the pouring tube 2 and the apex of the bulge 19 of 20 mm is maintained at the level of the pouring level 4 .
  • the longitudinal section through the mold 3 along the line C-C in FIG. 3 shows that the lines 20 of the transition from the bulge to the part lying in the plane of the slab surface are tapered, the taper value according to the invention being below 1.2%.
  • the longitudinal side walls 14 are also set conically, the required conicity depending on the width of the strand being set together with the longitudinal displacement 15 by means of spindles with different pitch heights already known.
  • 4 5 and 6 different embodiments of the roller pairs 8 forming the caliber are shown in the region of the deformation path.
  • the adaptation of the rolls 8 to the emerging arched strand format 7 is achieved in that the two rolls 22 forming a pair of rolls have a caliber shape 23.
  • FIG. 6 A third embodiment is shown in FIG. 6, cylindrical rollers 29, 30 being used for the surfaces 27, 28 running parallel to the longitudinal plane of the strand and conical rollers 31 being used for the transition surfaces 32.
  • all the rollers 29 to 31 forming the caliber are preferably arranged on a continuous axis.
  • All individual rollers 22 to 26 and 29 to 31 in the deformation section of all three mentioned embodiments are preferably suspended in a spring-loaded manner and hydraulically adjustable.
  • the alignment of the arched cross-section 13 in the central region of the emerging arched strand format 7 to the desired strand format 11 is shown in FIG. 7.
  • the guidance of the strand 11 which has solidified at this point takes over cylindrically shaped rollers 9.

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

Abstract

Un procédé sert à couler en continu des brames ayant une largeur considérablement supérieur à leur épaisseur, en particulier des brames d'acier de moins de 80 mm d'épaisseur. La masse fondue est versée d'un récipient de coulée (1) dans une lingotière (3) ayant du côté d'introduction de la coulée une section centrale plus grande au milieu que le format voulu de la coulée et correspondant à celui-ci dans ses zones marginales. Afin d'obtenir un procédé et un dispositif qui permettent de produire des brames en acier sans défauts de moins de 80 mm d'épaisseur et avec une finition de surface de haute qualité, la forme de la section transversale du côté d'introduction de la coulée dans la lingotière est maintenue sur toute la longueur de celle-ci et la croûte solidifiée de la zone centrale de la coulée (7) qui sort de la lingotière est déformée par des éléments de support et de guidage (8) agencés immédiatement après la lingotière, de sorte qu'après avoir traversé la section de déformation, la croûte solidifiée se situe sur le plan des bords (11) de la surface de la brame.

Claims (2)

1. Dispositif de coulée continue de brames plates, en particulier de brames d'acier ayant une épaisseur inférieure à 80 mm, la masse en fusion étant amenée, d'un récipient de coulée, à une coquille, dont la section transversale du côté de coulée, dans la zone centrale, s'écarte du format de la barre souhaité et, dans la zone des bords, correspond à celui-ci et, en maintenant la forme de la section transversale du côté de coulée de la coquille sur toute la longueur de la coquille, l'enveloppe de la zone centrale de la barre sortant de la coquille est déformée par des moyens de guidage et d'appui disposés directement en aval de la coquille, de sorte qu'elle se trouve, après traversée de l'étendue de déformation, dans le plan de la surface de brame de la zone des bords, c'est-à-dire que les zones cintrées de l'enveloppe de la barre sont amenées l'une vers l'autre de sorte que le cintrage disparaît, caractérisé en ce qu'une section transversale (13) cintrée de façon homogène, plus petite dans la zone centrale, du côté de sortie de la barre de la coquille (3), est en regard de la section transversale (12) cintrée plus grande du côté de coulée, et en ce que la ou les lignes de transition (20) de la surface plane de la brame à la surface cintrée présentent une conicité, adaptée à l'étendue longitudinale de l'élargissement de la section transversale de la zone cintrée, de pas plus de 1,2%, en ce que la distance entre la périphérie externe (18) d'une buse de coulée (2) et le sommet du cintrage (19) du côté de coulée, au niveau de la surface (4) de la masse de coulée, s'élève à au moins 20 mm, en ce qu'au moins un rouleau d'au moins une paire de rouleaux (8) des moyens de guidage et d'appui disposés en aval de la coquille présente un calibre adapté à la barre cintrée (7) qui sort, et en ce que la distance (21) entre les rouleaux d'une paire de rouleaux (8), de paire de rouleaux à paire de rouleaux, est diminuée dans la direction de coulée de 0,5-25 mm, de sorte que la déformation au front de solidification ne dépasse pas une valeur de 0,5%.
2. Dispositif selon la revendication 1, caractérisé en ce qu'au moins une paire de rouleaux (8) formant le calibre est munie d'un entraînement individuel.
EP87905187A 1986-08-18 1987-08-17 Dispositif de coulee continue de brames plates Expired - Lifetime EP0323958B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87905187T ATE64115T1 (de) 1986-08-18 1987-08-17 Einrichtung zum stranggiessen von flachen brammen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863627991 DE3627991A1 (de) 1986-08-18 1986-08-18 Verfahren zum stranggiessen von brammen und einrichtung zur durchfuehrung des verfahrens
DE3627991 1986-08-18

Publications (2)

Publication Number Publication Date
EP0323958A1 EP0323958A1 (fr) 1989-07-19
EP0323958B1 true EP0323958B1 (fr) 1991-06-05

Family

ID=6307639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87905187A Expired - Lifetime EP0323958B1 (fr) 1986-08-18 1987-08-17 Dispositif de coulee continue de brames plates

Country Status (6)

Country Link
US (1) US4955428A (fr)
EP (1) EP0323958B1 (fr)
JP (1) JPH02500501A (fr)
BR (1) BR8707794A (fr)
DE (1) DE3627991A1 (fr)
WO (1) WO1988001209A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0865849A1 (fr) * 1997-03-17 1998-09-23 Sms Schloemann-Siemag Aktiengesellschaft Lingotière oscillante pour la coulée continue de brames
WO1999001244A1 (fr) * 1997-06-30 1999-01-14 Sms Demag Ag Procede et dispositif pour la production de brames minces

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT392029B (de) * 1988-02-01 1991-01-10 Hulek Anton Stranggiessanlage zum stranggiessen von stahl
EP0440650B1 (fr) * 1988-06-16 1993-08-25 DAVY McKEE (SHEFFIELD) LIMITED Fabrication de mince plaque de metal
GB8814331D0 (en) * 1988-06-16 1988-07-20 Davy Distington Ltd Continuous casting of steel
DE4131829C2 (de) * 1990-10-02 1993-10-21 Mannesmann Ag Flüssigkeitsgekühlte Kokille für das Stranggießen von Strängen aus Stahl im Brammenformat
DE59200159D1 (de) * 1991-02-06 1994-06-23 Concast Standard Ag Kokille zum Stranggiessen von Metallen, insbesondere von Stahl.
NL9100911A (nl) * 1991-03-22 1992-10-16 Hoogovens Groep Bv Inrichting en werkwijze voor het vervaardigen van warmgewalst staal.
EP0535368B1 (fr) * 1991-09-19 1996-06-05 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif de coulée continue d'un lingot métallique
DE4135214C2 (de) * 1991-09-19 2000-12-14 Sms Demag Ag Verfahren und Anlage zur Herstellung von Stahlband
US5488987A (en) * 1991-10-31 1996-02-06 Danieli & C. Officine Meccaniche Spa Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device
IT1262073B (it) * 1993-02-16 1996-06-19 Danieli Off Mecc Lingottiera per colata continua di bramme sottili
CN1048930C (zh) * 1993-08-12 2000-02-02 冶金工业部钢铁研究总院 超小断面铸坯连铸装置
DE4343124C2 (de) * 1993-12-17 1996-05-23 Schloemann Siemag Ag Kokille zum Stranggießen von Stahlband
DE4403049C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
DE4403047C1 (de) * 1994-01-28 1995-08-10 Mannesmann Ag Strangführungsgerüst
DE4403045C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage zum Führen von Strängen
DE4403046C1 (de) * 1994-01-28 1995-08-17 Mannesmann Ag Rolle für ein Strangführungsgerüst
DE4403048C1 (de) * 1994-01-28 1995-07-13 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Rechteck-Dünnbrammen
US5477911A (en) * 1994-03-24 1995-12-26 Danieli United, Inc. Twin roller caster
IT1280171B1 (it) * 1995-05-18 1998-01-05 Danieli Off Mecc Linea di colata verticale per bramme
EP0941787B1 (fr) * 1998-03-09 2005-09-28 SMS Demag AG Element support pour une installation de coulée continue
DE19831998A1 (de) * 1998-07-16 2000-01-20 Schloemann Siemag Ag Stranggießkokille
US6419005B1 (en) 2000-06-29 2002-07-16 Vöest-Alpine Services and Technologies Corporation Mold cassette and method for continuously casting thin slabs
JP5843050B2 (ja) * 2013-05-02 2016-01-13 新日鐵住金株式会社 連続鋳造設備
DE102017220616A1 (de) * 2017-11-17 2019-05-23 Sms Group Gmbh Dünnbrammengießanlage mit wechselbarem Maschinenkopf

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US2564723A (en) * 1947-11-06 1951-08-21 Continuous Metalcast Corp Apparatus for the continuous casting of metal slab
GB1199805A (en) * 1967-04-20 1970-07-22 British Iron Steel Research Continuous Casting
DE2034762A1 (en) * 1970-07-14 1972-01-20 Schloemann AG, 4000 Dusseldorf Thin strip continuous casting - with thick length wise extending sections
JPS5916862B2 (ja) * 1973-03-26 1984-04-18 日本鋼管株式会社 連続鋳造法
SE417289B (sv) * 1976-07-30 1981-03-09 Jernkontoret Sett vid kontinuerlig gjutning av segringsbenegna stal och metallegeringar samt anordning for settets utforande
US4519439A (en) * 1977-07-26 1985-05-28 Jernjontoret Method of preventing formation of segregations during continuous casting
SU793704A1 (ru) * 1978-05-15 1981-01-07 Предприятие П/Я А-7897 Машина непрерывного лить пр моугольныхСТАльНыХ зАгОТОВОК
SU910331A1 (ru) * 1979-09-26 1982-03-07 Предприятие П/Я А-7697 Зона вторичного охлаждени машины непрерывного лить
DE3400220A1 (de) * 1984-01-05 1985-07-18 SMS Schloemann-Siemag AG, 4000 Düsseldorf Kokille zum stranggiessen von stahlband
AT379093B (de) * 1984-02-16 1985-11-11 Voest Alpine Ag Durchlaufkokille fuer eine stranggiessanlage
CH664915A5 (de) * 1984-10-26 1988-04-15 Concast Service Union Ag Durchlaufkokille zum stranggiessen von stahlstraengen mit polygonalem querschnitt.
FR2583662B1 (fr) * 1985-06-25 1987-09-25 Clecim Sa Procede et machine de coulee continue d'un produit metallique mince
US4716955A (en) * 1986-06-11 1988-01-05 Sms Concast Inc. Continuous casting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0865849A1 (fr) * 1997-03-17 1998-09-23 Sms Schloemann-Siemag Aktiengesellschaft Lingotière oscillante pour la coulée continue de brames
WO1999001244A1 (fr) * 1997-06-30 1999-01-14 Sms Demag Ag Procede et dispositif pour la production de brames minces

Also Published As

Publication number Publication date
BR8707794A (pt) 1989-08-15
JPH02500501A (ja) 1990-02-22
DE3627991C2 (fr) 1988-09-29
DE3627991A1 (de) 1988-02-25
US4955428A (en) 1990-09-11
EP0323958A1 (fr) 1989-07-19
WO1988001209A1 (fr) 1988-02-25

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