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EP0323958A1 - Dispositif de coulee continue de brames plates. - Google Patents

Dispositif de coulee continue de brames plates.

Info

Publication number
EP0323958A1
EP0323958A1 EP87905187A EP87905187A EP0323958A1 EP 0323958 A1 EP0323958 A1 EP 0323958A1 EP 87905187 A EP87905187 A EP 87905187A EP 87905187 A EP87905187 A EP 87905187A EP 0323958 A1 EP0323958 A1 EP 0323958A1
Authority
EP
European Patent Office
Prior art keywords
mold
rollers
casting
pair
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87905187A
Other languages
German (de)
English (en)
Other versions
EP0323958B1 (fr
Inventor
Hans Schrewe
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6307639&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0323958(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—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 method and a device for the continuous casting of slabs with a considerably greater width than thickness, the melt being fed from a casting vessel to a mold, the cross section of the pouring side of which deviates from the desired strand format in the central region and corresponds to this in the edge region.
  • Strand shell can be conveyed without cracks.
  • this type of mold design there is a strong friction at the transition, which is only slight due to the already known lubrication
  • the known mold has the further disadvantage that, while maintaining a small forming angle o
  • 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.
  • Mold length the specifications for the casting and cooling speed can be selected in a wide range without restricting the area of application with regard to slabs with very small thicknesses.
  • the invention also relates to a mold, as well as downstream support and guide means.
  • the water-cooled mold has slidable wide and long side walls, so that the desired strand exit format can be set variably.
  • the mold can be designed in a straight or curved shape and the cross-section-increasing pouring and discharge side in the central area on one side or symmetrically on both sides.
  • the mold which is attached to a frame construction, is moved oscillating in the casting direction.
  • the boundary lines of the cross-section deviating from the desired strand format in the middle region on the pouring-in and exit-side of the mold can be curved or straight.
  • the degree of curvature is chosen according to the invention such that, depending on the outside diameter of the pouring tube used, a minimum distance of 20 mm from the apex of the bulge on the pouring side at the level of the pouring level is maintained.
  • the lines of the transition from the bulge to the part lying in the plane of the slab surface run conically.
  • 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 according to the invention 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 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 from one pair of rollers to the other in the casting direction is reduced between 0.5 and 5 mm. This range of delivery of the roles is necessary for the
  • 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 / f. 5 m, in such a way that the strand cross section is completely solidified only after leaving the deformation zone. whereby, the 1.5 m are assigned a reduction in the distance of the roller pairs of 25 mm.
  • the rollers forming the caliber can be provided with an individual drive.
  • FIG. 1 shows a longitudinal section through the continuous casting installation 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, the melt from a pouring vessel 1 through a pouring tube 2, which is immersed in the casting level 4 , a mold 3 is fed.
  • the Koj ⁇ lle 3, which is attached to a frame structure 5, can be moved oscillating in the casting direction, as indicated by the arrows 6.
  • the strand format 7 emerging from the mold 3 is reshaped according to the invention by the downstream supporting and guiding means 8 in such a way that the strand shell 10 lies in the middle region in the plane of the slab surface of the edge region 11.
  • the downstream supporting and guiding means 8 in such a way that the strand shell 10 lies in the middle region in the plane of the slab surface of the edge region 11.
  • the arched cross-section 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 broad 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 according to the invention in such a way that at the level of the pouring level 4 there is a minimum distance between the outer circumference 18 of the pouring tube 2 and the apex of the bulge 19 of 20 mm is observed.
  • the longitudinal section through the mold 3 along the line CC 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 adjusted together with the longitudinal displacement 15 by means of spindles with different pitch heights already known.
  • 4, 5 and 6 show different embodiments of the pairs of rollers 8 forming the caliber in the region of the deformation path. 4, the adaptation of the rolls 8 to the emerging 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 of the individual rollers 22 to 26 and 29 to 31 in the deformation section of all three of the above-mentioned embodiments are preferably resiliently suspended and hydraulically adjustable.
  • the alignment of the arched cross-section 13 in the central region of the emerging strand format 7 to the desired strand format 11 is shown in FIG. 7.
  • the guide of the strand 11, which is rigid at this point, is performed by cylindrical-shaped rollers 9.

Landscapes

  • 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.
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 true EP0323958A1 (fr) 1989-07-19
EP0323958B1 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)

Families Citing this family (27)

* 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
DE68908717T2 (de) * 1988-06-16 1993-12-23 Davy Mckee Sheffield Herstellung dünner metallbrammen.
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
ATE105750T1 (de) * 1991-02-06 1994-06-15 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.
ES2089317T3 (es) * 1991-09-19 1996-10-01 Schloemann Siemag Ag Procedimiento e instalacion para la fabricacion de banda de acero.
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
DE4403048C1 (de) * 1994-01-28 1995-07-13 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Rechteck-Dünnbrammen
DE4403050C1 (de) * 1994-01-28 1995-09-28 Mannesmann Ag Stranggießkokille zum Führen von Strängen
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
DE4403049C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
DE4403046C1 (de) * 1994-01-28 1995-08-17 Mannesmann Ag Rolle für ein Strangführungsgerüst
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
DE19710791C2 (de) * 1997-03-17 2000-01-20 Schloemann Siemag Ag Zueinander optimierte Formen der Stranggießkokille und des Tauchausgusses zum Gießen von Brammen aus Stahl
DE19728957A1 (de) * 1997-06-30 1999-01-07 Mannesmann Ag Verfahren und Vorrichtung zum Erzeugen von Dünnbrammen
DE59912592D1 (de) * 1998-03-09 2006-02-09 Sms Demag Ag Führungselement einer Stranggiessanlage
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
CA2897736C (fr) * 2013-05-02 2017-06-20 Nippon Steel & Sumitomo Metal Corporation Installation de coulee continue
DE102017220616A1 (de) * 2017-11-17 2019-05-23 Sms Group Gmbh Dünnbrammengießanlage mit wechselbarem Maschinenkopf

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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

Non-Patent Citations (1)

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Title
See references of WO8801209A1 *

Also Published As

Publication number Publication date
BR8707794A (pt) 1989-08-15
JPH02500501A (ja) 1990-02-22
EP0323958B1 (fr) 1991-06-05
DE3627991C2 (fr) 1988-09-29
US4955428A (en) 1990-09-11
DE3627991A1 (de) 1988-02-25
WO1988001209A1 (fr) 1988-02-25

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