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EP0734295B1 - Installation de coulee continue et procede de production de brames minces - Google Patents

Installation de coulee continue et procede de production de brames minces Download PDF

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Publication number
EP0734295B1
EP0734295B1 EP95906269A EP95906269A EP0734295B1 EP 0734295 B1 EP0734295 B1 EP 0734295B1 EP 95906269 A EP95906269 A EP 95906269A EP 95906269 A EP95906269 A EP 95906269A EP 0734295 B1 EP0734295 B1 EP 0734295B1
Authority
EP
European Patent Office
Prior art keywords
casting
mould
billet
thickness
slag
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
EP95906269A
Other languages
German (de)
English (en)
Other versions
EP0734295A1 (fr
EP0734295B2 (fr
Inventor
Fritz-Peter Pleschiutschnigg
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 Siemag AG
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=6509215&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0734295(B1) "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
Publication of EP0734295A1 publication Critical patent/EP0734295A1/fr
Publication of EP0734295B1 publication Critical patent/EP0734295B1/fr
Application granted granted Critical
Publication of EP0734295B2 publication Critical patent/EP0734295B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/1206—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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders
    • 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

Definitions

  • the invention relates to a continuous casting plant and a method for producing Thin slabs.
  • WO-A-8801209 discloses a method and an apparatus for the continuous casting of Known slabs, while maintaining the cross-sectional shape of the pouring side of the Chill over the entire length of the mold, the strand shell of the central area from the Exiting strand through support directly downstream of the mold and Guide means is deformed, in such a way that after passing through the deformation distance lies in the plane of the slab surface of the edge area.
  • the object of the invention is to provide a method and a continuous caster, which make it possible to achieve a predetermined thickness of the thin strand achieve that optimal conditions in the slag supply and in the Strand thickness reduction already in the mold and in the guide frame at Casting rollers can be achieved.
  • the slag height h slag mainly depends on the thickness of the mold inlet cross section and the strand shell height h strand shell depends on the lifting height of the oscillating mold.
  • the constant thickness leads to a constant formation of slag over the Mold level and thus a constant slag supply in the area of Meniscus of the entire continuously forming strand shell (3).
  • This constant slag formation from casting powder or granulate (5) across the casting width avoids the risk of insufficient lubrication between the immersion nozzle and the Copper broadside plates. This danger exists because the Pouring slag a glassy one Structure (silicate structure) with a viscous behavior of about 0.5-10 poise.
  • an electromagnetic brake in the mold area can reduce turbulence in the Significantly reduce the area of the mold level.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Paper (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Metal Rolling (AREA)
  • Mold Materials And Core Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (5)

  1. Procédé pour fabriquer des brames minces, qui comporte les étapes suivantes :
    couler, au moyen d'une busette de coulée à immersion, dans une coquille oscillante bombée, la section transversale d'entrée de la coquille étant plus grande que la section transversale de sortie de la coquille, en maintenant la condition pour la busette de coulée à immersion et la coquille : FST FTA ≤ 50 avec
    FST = section transversale de la barre de la brame solidifiée,
    FTA = section transversale de la sortie de la busette de coulée,
    amener la poudre de coulée au bain de fusion métallique de sorte que la condition : hlaitier ≥ hcoquille de la barre avec
    hcoquille de la barre = hauteur de la coquille de la barre au-dessus du bain (3),
    hlaitier = hauteur du laitier (4),
    soit maintenue de façon dépendant de la hauteur d'oscillation, de la forme et de la fréquence du mouvement de la coquille,
    réduire la section transversale de la barre directement au-dessous de la coquille en plusieurs étapes dans une cage à rouleaux multiples, pour établir, parallèlement à la réduction d'épaisseur de la barre en continu, dans l'intérieur de la barre encore liquide, une convection forcée, qui correspond à l'action de l'agitation électromagnétique, l'épaisseur finale de la barre étant atteinte pour un noyau encore liquide à la fin de la cage à rouleaux multiples, et
    mener la solidification de sorte que, lorsque l'épaisseur finale est atteinte à la sortie de la cage à rouleaux multiples, il existe encore à l'intérieur de la barre un domaine à deux phases, la poudre de coulée étant amenée de façon telle que, sur toute la largeur de la brame, l'épaisseur active dans le bain de coulée, qui est précédemment recouverte de poudre de coulée et qui est pertinente pour la fusion du laitier de coulée, soit constante.
  2. Procédé selon la revendication 1,
    caractérisé en ce que, même pendant la coulée, la fréquence, la hauteur de course et la forme d'oscillation pour le mouvement de la coquille peuvent être choisies librement.
  3. Procédé selon les revendications 1 et 2,
    caractérisé en ce que la coquille est réalisée de sorte que la barre, à la sortie de la coquille, conserve un bombement résiduel symétriquement à l'axe médian de la barre, qui vaut, en épaisseur, moins de 4% de l'épaisseur finale.
  4. Installation de coulée continue pour la mise en oeuvre du procédé selon la revendication 1, comportant :
    une busette de coulée à immersion, dont la section transversale est (FTA) ≥ 1/50 de la section transversale de la barre de la brame solidifiée (FST), qui pénètre dans une coquille bombée oscillante, la section transversale d'entrée de la coquille étant plus grande que la section transversale de sortie de la coquille, et qui est reliée à un dispositif d'oscillation librement réglable en fréquence, hauteur de course, et forme,
    une amenée de poudre de coulée, qui est reliée, par l'intermédiaire d'un dispositif de mesure et de réglage, au dispositif d'oscillation et grâce à laquelle, de façon dépendant de la fréquence, de la forme et de la valeur de l'oscillation, la poudre de coulée peut être amenée de façon que la hauteur du laitier (hlaitier) soit maintenue supérieure ou égale à la hauteur de la coquille de la barre au-dessus du bain (hcoquille de la barre), et
    une cage (25) à rouleaux multiples agencée, dans la direction d'extraction, derrière la coquille, qui présente un dispositif hydraulique (24, 25), grâce auquel la distance entre deux rouleaux opposés peut être modifiée de façon continue.
  5. Installation de coulée continue selon la revendication 4,
    caractérisée en ce que, sur toute la largeur de la brame, l'épaisseur dans le bain de coulée, qui est recouverte de poudre de coulée, y compris la zone entre les parois de la busette de coulée à immersion et les plaques latérales respectives sur la largeur de la coquille, vaut au maximum 120% de l'épaisseur de la barre correspondante à la sortie de la coquille.
EP95906269A 1994-01-28 1995-01-20 Procede de production de brames minces Expired - Lifetime EP0734295B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4403049A DE4403049C1 (de) 1994-01-28 1994-01-28 Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
DE4403049 1994-01-28
PCT/DE1995/000095 WO1995020445A1 (fr) 1994-01-28 1995-01-20 Installation de coulee continue et procede de production de brames minces

Publications (3)

Publication Number Publication Date
EP0734295A1 EP0734295A1 (fr) 1996-10-02
EP0734295B1 true EP0734295B1 (fr) 1998-04-01
EP0734295B2 EP0734295B2 (fr) 2002-05-02

Family

ID=6509215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95906269A Expired - Lifetime EP0734295B2 (fr) 1994-01-28 1995-01-20 Procede de production de brames minces

Country Status (14)

Country Link
US (1) US6568461B1 (fr)
EP (1) EP0734295B2 (fr)
JP (1) JP3085978B2 (fr)
CN (1) CN1046449C (fr)
AT (1) ATE164540T1 (fr)
AU (1) AU1453595A (fr)
BR (1) BR9506653A (fr)
CA (1) CA2181908A1 (fr)
DE (2) DE4403049C1 (fr)
DK (1) DK0734295T4 (fr)
ES (1) ES2114304T5 (fr)
RU (1) RU2134178C1 (fr)
WO (1) WO1995020445A1 (fr)
ZA (1) ZA95671B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832704A1 (fr) * 1996-09-19 1998-04-01 Hoogovens Staal B.V. Installation de coulée continue
DE19639302C2 (de) * 1996-09-25 2000-02-24 Schloemann Siemag Ag Verfahren und Vorrichtung zur Erzeugung von dünnen Brammen auf einer Stranggießanlage
DE19639297C2 (de) * 1996-09-25 2000-02-03 Schloemann Siemag Ag Verfahren und Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung
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
ATE243586T1 (de) * 1997-11-21 2003-07-15 Sms Demag Ag Verfahren und anlage zum stranggiessen von brammen
DE19801822C1 (de) * 1998-01-15 1999-03-18 Mannesmann Ag Verfahren und Vorrichtung zum Stranggießen von Metallen
NL1014024C2 (nl) * 2000-01-06 2001-07-09 Corus Technology Bv Inrichting en werkwijze voor het continu of semi-continu gieten van aluminium.
US8020605B2 (en) * 2007-01-26 2011-09-20 Nucor Corporation Continuous steel slab caster and methods using same
US20080179036A1 (en) * 2007-01-26 2008-07-31 Nucor Corporation Continuous steel slab caster and methods using same
ITMI20120046A1 (it) * 2012-01-18 2013-07-19 Arvedi Steel Engineering S P A Impianto e procedimento per la colata continua veloce di bramme sottili di acciaio e di bramme di acciaio
EP3513888B1 (fr) * 2016-09-16 2022-01-05 Nippon Steel Stainless Steel Corporation Procédé de coulée continue
CN110576163B (zh) * 2019-09-28 2021-07-20 江苏联峰能源装备有限公司 一种大断面连铸圆坯生产高碳锰铬钢的方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318363A (en) * 1965-03-18 1967-05-09 Oglebay Norton Co Continuous casting method with degassed glass-like blanket
JPS6087959A (ja) * 1983-10-20 1985-05-17 Sumitomo Metal Ind Ltd 連続鋳造のパウダ供給方法およびその装置
DE3423475C2 (de) † 1984-06-26 1986-07-17 Mannesmann AG, 4000 Düsseldorf Verfahren und Einrichtung zum Stranggießen von flüssigen Metallen, insbesondere von flüssigem Stahl
DE3627991A1 (de) * 1986-08-18 1988-02-25 Mannesmann Ag Verfahren zum stranggiessen von brammen und einrichtung zur durchfuehrung des verfahrens
DE3709188A1 (de) * 1987-03-20 1988-09-29 Mannesmann Ag Ausgiessrohr fuer metallurgische gefaesse
BR8707802A (pt) * 1987-06-15 1989-10-17 Bell Helicopter Textron Inc Manche desengatavel para controle de aeronave e manche de copiloto com controle ciclico de rapida conexao
DE3724628C1 (de) * 1987-07-22 1988-08-25 Mannesmann Ag Stranggiesskokille zur Erzeugung duenner Straenge im Brammenformat
DE3818077A1 (de) * 1988-05-25 1989-11-30 Mannesmann Ag Verfahren zum kontinuierlichen giesswalzen
DE3823861A1 (de) * 1988-07-14 1990-01-18 Thyssen Stahl Ag Verfahren und anlage zum herstellen eines stahlbandes mit einer dicke von weniger als 10 mm
SU1764790A1 (ru) * 1988-08-18 1992-09-30 Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им.А.И.Целикова Устройство дл подачи шлакообразующей смеси в кристаллизатор
RU1677927C (ru) * 1990-01-30 1995-07-25 Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина Способ обжатия непрерывнолитых плоских слитков в твердожидком состоянии
RU1677926C (ru) * 1990-02-19 1995-10-20 Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина Способ непрерывной разливки плоских слитков и устройство для его осуществления
SU1754323A1 (ru) * 1990-06-28 1992-08-15 Советско-Нидерландское Совместное Предприятие "Информаркет" Погружной глуходонный огнеупорный стакан
DE4131829C2 (de) * 1990-10-02 1993-10-21 Mannesmann Ag Flüssigkeitsgekühlte Kokille für das Stranggießen von Strängen aus Stahl im Brammenformat

Also Published As

Publication number Publication date
BR9506653A (pt) 1997-09-16
US6568461B1 (en) 2003-05-27
CN1046449C (zh) 1999-11-17
AU1453595A (en) 1995-08-15
EP0734295A1 (fr) 1996-10-02
CN1139892A (zh) 1997-01-08
DE4403049C1 (de) 1995-09-07
DK0734295T3 (da) 1998-10-19
WO1995020445A1 (fr) 1995-08-03
ZA95671B (en) 1995-09-28
CA2181908A1 (fr) 1995-08-03
JPH09508070A (ja) 1997-08-19
DK0734295T4 (da) 2002-06-17
JP3085978B2 (ja) 2000-09-11
DE59501780D1 (de) 1998-05-07
ES2114304T3 (es) 1998-05-16
EP0734295B2 (fr) 2002-05-02
RU2134178C1 (ru) 1999-08-10
ES2114304T5 (es) 2002-11-16
ATE164540T1 (de) 1998-04-15

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