EP0917922B1 - Procédé et installation de coulée en continu de brames - Google Patents

Procédé et installation de coulée en continu de brames Download PDF

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Publication number
EP0917922B1
EP0917922B1 EP98121264A EP98121264A EP0917922B1 EP 0917922 B1 EP0917922 B1 EP 0917922B1 EP 98121264 A EP98121264 A EP 98121264A EP 98121264 A EP98121264 A EP 98121264A EP 0917922 B1 EP0917922 B1 EP 0917922B1
Authority
EP
European Patent Office
Prior art keywords
rollers
strip
roller
continuous casting
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.)
Expired - Lifetime
Application number
EP98121264A
Other languages
German (de)
English (en)
Other versions
EP0917922A1 (fr
Inventor
Fritz-Peter Prof. Dr.-Ing. Pleschiutschnigg
Joachim Schwellenbach
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
SMS Demag 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
Priority claimed from DE19849603A external-priority patent/DE19849603C2/de
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0917922A1 publication Critical patent/EP0917922A1/fr
Application granted granted Critical
Publication of EP0917922B1 publication Critical patent/EP0917922B1/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
    • B22D11/128—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
    • B22D11/12—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

Definitions

  • the invention relates to a method for the continuous casting of steel slabs with a Continuous mold, the partially solidified, from one strand shell and one partially liquid core existing strand after exiting from a mold the further solidification between roles on the inside and roles led to an outside of the strand guide and the strand shell in the area between two rollers on the inside spaced apart in the casting direction or the outside deformation in the form of a bulge with a cross-sectional enlargement formed. Furthermore, the invention relates to an implementation suitable for the process.
  • a strand guide suitable for safely guiding the casting strand includes in usually a larger number of individuals, but more closely interacting as a leadership Strand guide segments with one loose side and one fixed side Frame arranged guide and / or drive rollers, which together form a so-called Form a roll carpet.
  • the roles can be continuous, but also at comparatively large strand widths can be temporarily stored.
  • EP 0 350 431 A2 describes a continuous casting process for slabs with a Continuous mold known.
  • the strand which partially solidifies in cross section, is between Guided pairs of rollers and is pulled off by means of driven rollers.
  • the individual rolls of pairs of rolls are hydraulically deformed relative to the strand to actually employ.
  • EP 0 535 368 A1 describes a method and a plant for the production of Steel band known.
  • a continuously cast steel strip the consists of a solidified strand shell and a liquid core, in a roll deformation reduced in thickness and then rolled.
  • EP 0 041 498 A2 describes a continuous sheet caster.
  • a strand guide is arranged below the mold, which has two opposite roller conveyors, the rollers of which are mounted on scaffolding parts, the spacing of mutually opposite scaffolding parts and thus the spacing of the roller conveyors being variable in accordance with a rod cross section to be set.
  • roller conveyor To convert to adjust the distance between each other lying roller conveyors easy to design while allowing the distance to keep the end rolls of adjacent scaffolding parts approximately the same size Roll at least one of the roller tracks on the frame part in the longitudinal direction of this
  • the roller conveyor is arranged so that it can be moved and in different lengths on the scaffolding fixable.
  • a steel strip strand is used to structure and to simplify the roll deformation unit cast from 40 - 80 mm thick, down to 15 - 40 mm thick and 2 - 15 mm Residual liquid roll-formed in a maximum of three stages and until it solidifies guided.
  • the volume to be displaced builds up a pressure sensor based on the ferrostatic pressure, the casting speed. depends on the volume and the path.
  • the volume is between two pairs of rollers Roller guides made of two half volumes, the fixed and loose side of each Are assigned to a segment.
  • this melting volume When this melting volume is displaced it exerts high pressure on the strand shell with its narrowing and promotes the formation of bulges while the system Strand / strand bulge negatively multiplied, superimposed and uncontrolled Movements of the melt in the mold level leads.
  • the object of the invention based on a process for the continuous casting of steel slabs in the preamble of claim 1 mentioned type and a trained to execute it Continuous caster, with which it is possible to achieve the aforementioned disadvantages and overcome difficulties, and especially the emergence of harmful, to suppress periodic bulges of the strand shell during roll deformation or to compensate.
  • An embodiment of the method provides that the roles one side relative to the position of the other side in the casting direction by a maximum of half Roll distance to be offset from each other.
  • This measure allows a continuous caster with a surprisingly uncomplicated construction and practically without additional costs to suppress the harmful bulges as far as possible by the rollers of each strand guide segment being offset from one another by at least a partial amount of this roller spacing This is achieved, for example, in that the bearings on the inside or on the outside are preferably mirrored to one another in the case of intermediate rolls.
  • a further embodiment of the continuous caster provides that the mold with a flat design of their outlet on one side, for example opposite the strand guide fixed side, with n + 1 castors the loose side below Forming a toothing formed with the first strand guide segment is.
  • the strand guide shown in Fig. 1a has a mold 20 with a mold outlet 22. Among them is the casting strand 21 in solidification recognizable, its strand shell 1 increases in thickness with increasing solidification, whereas the the residual melt 2 enclosed therein decreases in relative volume, until it is completely frozen at last. In the solidification area is the Strand 21 between rollers 4, 4 'of the fixed side and rollers 3, 3' of Loss side led by management segments.
  • Chill mold 20 and strand guide preferably belong to a continuous caster, not shown for casting steel slabs with a continuous mold with formats between 40 - 250 mm thick, widths between 500 to 3,500 mm and casting speeds between 1 to 10 m / min.
  • 1b shows a strand guide design according to the invention. at this is to compensate for the cross-sectional enlargements affected strand areas each from outside for training a counter-pressure sufficient to reduce the cross section applied.
  • the rolls are over in the casting direction at least a partial amount of their roller spacing, and preferred by half the roller distance, offset from each other.
  • FIG. 3 shows the arrangement of intermediate rolls 3, 4, the bearing 8, 9 of the loose and fixed side 6, 7 preferably mirrored in the center to stand by each other.
  • opposite Rolls 3, 4 also with mutually offset roles, z. B. with around 50 % of the roller spacing arranged offset, not surface symmetrical, but arranged symmetrically to each other, whereby these Arrangement for a bulge and minimized in time and place Melt volume movement leads.
  • Fig. 4 shows an arrangement of roller segments 5, 5 'of a vertical guide path for a casting strand 21 below one Mold 20.
  • the segments 5, 5 ' are due to their mutual Roll offset with teeth 14 lined up. It is one half each 22 and 22 'of the mold outlet of the mold 20 relative to the other half with teeth 14, 14 'with the subsequent strand guide segment 5 'by half a roller spacing shortened or lengthened.
  • the roll-carrying loss side 6 of each strand guide segment 5 or 5 'with mutual interlocking 14 or 14' by at least offset a partial amount of a roller spacing.
  • Grid which normally connects to the exit of the mold, ensure the interlocking with the first roller segment.
  • the figure 4 clearly shows the strand shell increasing in thickness 1 when the content of the melt decreases in the vertical direction 2.
  • Figure 5 shows a vertical / horizontal bending system of the strand guide with the segments 5, 5 'associated with each other. This are in the area of the bend according to the visible radius rays strung together.
  • the first, following the mold 20 Segment 5 'is with an offset connection length - fixed side shortens to the extended outlet part 22 of the mold 20 and extended on the loose side to the shortened outlet part 22 'of the mold 20 toothed connected.

Claims (9)

  1. Procédé de coulée continue de brames en acier comportant une lingotière continue (20), la ligne (21) en partie solidifiée consistant en une croûte solidifiée (1) et en un noyau partiellement liquide (2) étant guidée, après la sortie de la lingotière (20), pendant la poursuite de la solidification, entre des rouleaux (3, 3') d'un côté inteme(6) et des rouleaux (4, 4') de respectivement un côté exteme (7) du guide de ligne et la croûte solidifiée (1) formant alors, dans la zone située entre respectivement deux rouleaux écartés dans le sens de coulée du côté inteme (6) ou du côté exteme (7), des déformations sous forme d'un gonflement (10) avec une augmentation de section transversale,
    caractérisé en ce que
    l'ensemble du chemin de roulement du guide de ligne est déplacé soit sur le côté inteme (6), soit sur le côté externe (7), dans le sens longitudinal et donc dans le sens de coulée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les rouleaux d'un côté respectif sont décalés les uns par rapport aux autres relativement à la position des rouleaux de l'autre côté dans le sens de coulée au maximum d'un demi-intervalle entre les rouleaux.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    pour la compensation des augmentations de section transversale des zones de section transversale concemées, une contre-pression suffisante pour la formation d'un renfoncement (11) réduisant la section transversale est respectivement appliquée de l'extérieur.
  4. Installation de coulée continue pour la fabrication de brames d'acier, dans laquelle la ligne partiellement solidifiée, comportant une croûte solidifiée (1) avec un noyau en coulée, est guidée, après la sortie de la lingotière (20), pendant la poursuite de la solidification des segments du guide de ligne (5), entre des rouleaux respectivement écartés dans le sens de coulée d'un côté interne (6) ou d'un côté externe (7) et la croûte solidifiée (1) constituant des déformations sous forme de gonflements (10) entre respectivement deux rouleaux (3, 3') écartés dans le sens de coulée d'un côté (6) ou les rouleaux (4, 4') de l'autre côté (7), notamment pour réaliser le procédé de l'invention,
    caractérisée en ce que
    le côté mobile (6) supportant les rouleaux (6) et le côté fixe (7) de chaque segment de guide de ligne (5) sont disposés décalés l'un par rapport à l'autre d'une distance équivalant à au moins une fraction d'un intervalle entre les rouleaux sous l'engrenage réciproque (14, 14').
  5. Installation de coulée continue selon la revendication 4,
    caractérisée en ce que
    une moitié de la sortie de la coquille (22) avec le segment de guide de ligne contigu (5') est conçue raccourcie ou allongée de la valeur d'un demi-intervalle entre les rouleaux relativement à l'autre moitié sous l'engrenage (14, 14').
  6. Installation de coulée continue selon la revendication 4 ou 5,
    caractérisée en ce que
    lorsque des rouleaux sont intercalés (3, 4), les paliers (8, 9) du côté inteme (6) ou du côté externe (7) sont de préférence mutuellement symétriques en miroir par rapport à un point central.
  7. Installation de coulée continue selon une des revendications 4 à 6,
    caractérisée en ce que
    la lingotière (20) est configurée, avec une configuration plane en surface de sa sortie (22) sur un côté, par exemple en face du côté fixe du guide de ligne (7), avec n+1 rouleaux de base (12) du côté mobile (6) en formant un engrenage (14) avec le premier segment de guide de ligne (5').
  8. Installation de coulée continue selon une des revendications 4 à 7,
    caractérisée en ce que
    dans une installation à coulée continue courbe, les segments s'engrenant (5, 5') sont munis d'un jeu de rouleaux isolés.
  9. Installation de coulée continue selon une des revendications 4 à 8,
    caractérisée en ce que
    le diamètre du premier rouleau (3, 4) augmente juste sous la lingotière (20) jusqu'aux rouleaux (3, 4) à l'extrémité du guide de ligne (5), par exemple d'un diamètre de 100 mm jusqu'à un diamètre maximal de 300 mm.
EP98121264A 1997-11-21 1998-11-07 Procédé et installation de coulée en continu de brames Expired - Lifetime EP0917922B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19751709 1997-11-21
DE19751709 1997-11-21
DE19832923 1998-07-22
DE19832923 1998-07-22
DE19849603A DE19849603C2 (de) 1997-11-21 1998-10-28 Verfahren und Stranggießanlage zum Gießen von Brammen mit einer Durchlaufkokille und einer Strangführung aus Rollen
DE19849603 1998-10-28

Publications (2)

Publication Number Publication Date
EP0917922A1 EP0917922A1 (fr) 1999-05-26
EP0917922B1 true EP0917922B1 (fr) 2003-06-25

Family

ID=27217951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121264A Expired - Lifetime EP0917922B1 (fr) 1997-11-21 1998-11-07 Procédé et installation de coulée en continu de brames

Country Status (4)

Country Link
US (1) US6308769B1 (fr)
EP (1) EP0917922B1 (fr)
JP (1) JPH11216546A (fr)
AT (1) ATE243586T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3272442A1 (fr) 2016-07-21 2018-01-24 SMS Group GmbH Procédé de fonctionnement d'un corset de guidage dans une installation de coulée continue et corset de guidage correspondante

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951262C1 (de) * 1999-10-25 2001-04-05 Sms Demag Ag Strangführungsgerüst einer Stranggießanlage, insbesondere für Dünnbrammen aus Stahl
KR100384447B1 (ko) * 2000-08-25 2003-05-22 재단법인 포항산업과학연구원 연속주조기의 롤 변형보정 장치
AT410408B (de) * 2001-01-30 2003-04-25 Voest Alpine Ind Anlagen Verfahren zum stranggiessen von metallschmelzen
US6986654B2 (en) * 2002-07-03 2006-01-17 Therics, Inc. Apparatus, systems and methods for use in three-dimensional printing
US7637162B2 (en) 2007-10-01 2009-12-29 Spirit Aerosystems, Inc. Mechanism for adaptive contour compliance
CN102069163B (zh) * 2010-12-24 2013-11-13 中冶京诚工程技术有限公司 结晶器、生产铸坯的装置和方法、铸坯以及超大断面铸坯
JP5691912B2 (ja) * 2011-07-26 2015-04-01 Ｊｆｅスチール株式会社 金属片の連続鋳造方法
IT201700067508A1 (it) 2017-06-16 2018-12-16 Danieli Off Mecc Metodo di colata continua e relativo apparato
CN107414048B (zh) * 2017-08-14 2019-07-16 中冶赛迪工程技术股份有限公司 一种连铸坯扇形段在线变形补偿的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504558B2 (de) * 1975-01-31 1976-12-02 Mannesmann AG, 4000 Düsseldorf Rollenanordnung in einer bogenfuehrung einer stranggiessanlage
AT367327B (de) * 1980-05-29 1982-06-25 Voest Alpine Ag Bogenstranggiessanlage
JPS57209759A (en) * 1981-06-17 1982-12-23 Nippon Steel Corp Continuous casting method for steel
DE3907905C2 (de) * 1988-07-04 1999-01-21 Mannesmann Ag Stranggießverfahren
EP0535368B1 (fr) * 1991-09-19 1996-06-05 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif de coulée continue d'un lingot métallique
DE4403049C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
EP0946318B1 (fr) * 1996-11-08 2001-05-23 SMS Demag AG Procede et installation de coulee continue de brames fines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3272442A1 (fr) 2016-07-21 2018-01-24 SMS Group GmbH Procédé de fonctionnement d'un corset de guidage dans une installation de coulée continue et corset de guidage correspondante
DE102016213351A1 (de) 2016-07-21 2018-01-25 Sms Group Gmbh Verfahren zum Betreiben einer Strangführung in einer Stranggießanlage und entsprechende Strangführung

Also Published As

Publication number Publication date
JPH11216546A (ja) 1999-08-10
EP0917922A1 (fr) 1999-05-26
ATE243586T1 (de) 2003-07-15
US6308769B1 (en) 2001-10-30

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