EP1819463B1 - Procede pour augmenter la duree de vie des parois de grands cotes d'une coquille reglable - Google Patents

Procede pour augmenter la duree de vie des parois de grands cotes d'une coquille reglable Download PDF

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Publication number
EP1819463B1
EP1819463B1 EP05783651A EP05783651A EP1819463B1 EP 1819463 B1 EP1819463 B1 EP 1819463B1 EP 05783651 A EP05783651 A EP 05783651A EP 05783651 A EP05783651 A EP 05783651A EP 1819463 B1 EP1819463 B1 EP 1819463B1
Authority
EP
European Patent Office
Prior art keywords
casting
side walls
center axis
mold
continuous
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
EP05783651A
Other languages
German (de)
English (en)
Other versions
EP1819463A1 (fr
Inventor
Herbert Höller
Johann PÖPPL
Guoxin Shan
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.)
Primetals Technologies Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH and Co
Siemens VAI Metals Technologies GmbH Austria
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 Siemens VAI Metals Technologies GmbH and Co, Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH and Co
Publication of EP1819463A1 publication Critical patent/EP1819463A1/fr
Application granted granted Critical
Publication of EP1819463B1 publication Critical patent/EP1819463B1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/004—Copper alloys
    • 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
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper

Definitions

  • the invention relates to a method for increasing the service life of the broad side walls of an adjusting mold formed by broad side walls and narrow side walls in a continuous casting plant for continuous casting of a metal strand.
  • the invention is therefore based on the prior art, the task of proposing a method with which the duration of use of a mold, especially when casting long sequences with the same casting width can be significantly extended.
  • the casting center axis is defined in the mold by equal distances to the narrow side walls and this G discernmittenachse continues in conventional continuous casting even in the middle of the strand emerging from the continuous casting mold and the strand guide of the casting continuous cast metal strand. It is therefore located in a plant longitudinal level. Now, if the G manmittenachse offset from its original position of a central plant longitudinal plane parallel to itself by a small amount, so the mold leaving the mold is offset by this small amount off-center promoted by the strand guide of the continuous casting.
  • the shifting of the casting center axis takes place by a synchronous displacement of the narrow side walls in the same direction between the broad side walls of the adjusting mold.
  • the already existing in an adjustment mold preferably hydraulically operated and controlled from the plant control level from adjusting used.
  • the continuous shifting of the casting center axis takes place between two predetermined range limits. Due to the continuous shifting of the casting center axis during the entire casting time within these range limits, there is a substantially uniform wear on the broad side walls of the mold in the areas that is coated by the edges of the narrow side walls. These range limits are defined in the computer program that controls the adjustment process.
  • the distance of the region boundaries is preferably between 10 mm and 50 mm.
  • the displacement movement of the G manmittenachse between the area boundaries and thus the narrow side walls along the broad side walls follows a steady curve, preferably a sinusoidal curve. However, other curves can be selected.
  • a second possible embodiment of the method according to the invention is achieved in that a plurality of operating points for the positioning of the G manmittenachse are set for discontinuous shifting of G manmittenachse between the narrow side walls and that after reaching a certain level of wear on the broad side wall at an operating point G manmittenachse is assigned to a new operating point.
  • the "specific wear value" in this case represents a threshold value of the wear for the change of the operating point.
  • a central operating point which corresponds to the setting of the G stealmittenachse on a conventional adjusting or continuous casting, on both sides of this central operating point at least one additional operating point provided, d , H.
  • the threshold value of Kokillenverschl is hereby set so that no deterioration of the surface quality of the metal strand in this area caused by this wear mark.
  • the distance between adjacent operating points is suitably at least between 5 mm and 50 mm.
  • the displacement movement between two operating points follows a continuous curve, preferably a sinusoid curve.
  • a continuous curve preferably a sinusoid curve.
  • other curves can be selected.
  • the filling of the adjustment mold with molten metal should be carried out centrally, so that the melt distribution and the flow conditions in the mold run substantially symmetrically and thus the cooling conditions are kept uniform.
  • the shifting of the casting center axis causes a slightly asymmetric melt supply, which hardly affects the flow conditions.
  • the supply of melt from the intermediate vessel arranged above the adjusting mold can be aligned with the position of the casting center axis.
  • the orientation of the supply of melt by a synchronous with the G stealmittenachse taking place lateral displacement of the tundish takes place. This calibration can be performed with the standard equipment provided on the continuous caster.
  • the position change of G manmittenachse is automatically performed by the process control system of the continuous casting.
  • the process computer assigned to the process control system has access to all essential data influencing factors that cause the wear with different intensity and can determine the optimum time for the displacement of the G manmittenachse with a matching mathematical model and give appropriate control signals to the adjustment of the narrow side walls of the adjustment.
  • control room of the continuous casting plant can manually intervene in the process control system and a control signal for shifting the casting center axis can be generated.
  • a preferred field of application of this invention is steel continuous casting.
  • FIGS. 1 In the representations of the FIGS. 1 is a Verstellkokille 1 in a continuous casting with broad side walls 2, 3 and with this between the wide side walls clamped arranged narrow side walls 4, 5 shown schematically.
  • Each narrow side wall is assigned two adjusting devices 6, 7 and 8, 9 arranged one above the other, with which the narrow side walls can be set to predetermined casting widths B and to a pouring-width-dependent casting cone in accordance with the production program.
  • the adjusting devices preferably comprise controllable pressure medium cylinders, which are controlled by a process computer on the plant control level 10.
  • the two narrow side walls 4, 5 are arranged symmetrically to G cummittenachse 11.
  • the supply of melt takes place in alignment with the pouring center axis 11.
  • the casting center axis 11 continues below the adjusting mold 1 in the casting direction through the strand guide of the continuous casting plant (not shown).
  • Fig. 2 shows a broad side wall 2 with the occurring when using a first embodiment of the method according to the invention on the melt side surface wide wedge-shaped wear marks 14 at a long casting time with constant casting width.
  • two virtual range limits G 1 , G 2 are provided, which are determined in a mathematical model and retrievable from the process computer. Starting from a central casting center axis 11 0, casting area centers 11 1 and 11 2 are assigned to this area boundaries at the same distance, at which orientation the position of the narrow side walls, not shown here, is oriented. Accordingly, a metal strand emerges from the adjusting mold, which in its positioning in the mold guide subsequent to the mold is fixed in its maximum deflections by the position-related casting widths B 1 and B 2 .
  • the cast strand emerges from the Mold with a narrow side position, which follows a sine curve 17 with a large wavelength and corresponds to the continuous narrow side movement in the mold. Due to the pendulum movement of the casting center axis in the adjustment range between the range limits, there is a comparatively low and largely uniform wear on the broad side walls, whereby the service life of the broad side walls is substantially increased.
  • Fig. 3 shows a broad side wall 2 with the occurring when using a second embodiment of the method according to the invention on the melt-side surface wedge-shaped wear marks with a long casting time with a constant casting width.
  • three virtual operating points P 0 , P 1 , P 2 are provided, which are determined in a mathematical model and retrievable from the process computer. Casting center axes 11 0 , 11 1 , 11 2 are assigned to these operating points at which the positions of the narrow side walls (not shown here) are oriented. Accordingly, a metal strand emerges from the adjusting mold, which in its positioning in the strand guide subsequent to the mold is fixed by the position-related casting widths B 0 , B 1 and B 2 .
  • the operating point P 0 which corresponds to the centered standard setting of a continuous casting plant, is assigned to the casting center axis 11 0 , in which the cast metal strand enters centrically with the position B 0 in the strand guide 13 indicated by dot-dash lines.
  • wear marks 14 which extend from the edges 14a in the direction of the casting center axis 11 0 occur .
  • the edge 14a is formed substantially along the line of contact of the narrow side wall with the broad side wall of the adjustment mold by the frictional action of the edge region of the forming cast strand on the broad side wall.
  • wear marks 15 are formed at the operating point P 1 and wear marks 16 at the operating point P 2 .
  • the total wear on the broad side wall by the shifting of the casting center axis 11 between the operating points P 0 , P 1 , P 2 is made uniform and minimized and thus significantly increases the service life of the broad side walls.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Road Signs Or Road Markings (AREA)
  • Pens And Brushes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (10)

  1. Procédé d'augmentation de la durée de vie des parois des côtés larges d'une lingotière ajustable, formée par des parois (2, 3) de côtés larges et des parois (4, 5) de côtés étroits, d'une installation de coulée continue pour la coulée continue d'une barre métallique, caractérisé en ce qu'un axe central de coulée (11, 110, 111, 112) est définie entre les parois des côtés étroits et en ce que cet axe central de coulée est déplacé parallèlement à lui-même, de manière continue ou discontinue, et de manière synchronisée sur les parois des côtés étroits entre les parois des côtés larges pendant la coulée
  2. Procédé selon la revendication 1, caractérisé en ce que le déplacement continu de l'axe central de coulée s'effectue entre deux limites (G1, G2).
  3. Procédé selon la revendication 2, caractérisé en ce que le déplacement entre les limites suit une courbe continue, de préférence une courbe sinusoïdale.
  4. Procédé selon la revendication 1, caractérisé en ce que pour déplacer en continu l'axe central de coulée entre les parois des côtés étroits, plusieurs points de fonctionnement (P0, P1, P2) sont définis pour le positionnement de l'axe central de coulée et en ce que lorsqu'une valeur définie d'usure de la paroi des côtés larges est atteinte en un point de fonctionnement, l'axe central de coulée est associé à un nouveau point de fonctionnement.
  5. Procédé selon la revendication 4, caractérisé en ce que le déplacement entre deux points de fonctionnement suit une courbe continue et de préférence une courbe sinusoïdale.
  6. Procédé selon les revendications 4 ou 5, caractérisé en ce que la valeur définie de l'usure est définie par des grandeurs qui définissent l'usure, par exemple la durée de coulée, la longueur coulée, le nombre de charges, la vitesse de coulée ou des paramètres similaires.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'apport de métal fondu par le récipient intermédiaire disposé à l'extérieur de la lingotière ajustable est aligné sur la position de l'axe central de coulée.
  8. Procédé selon la revendication 7, caractérisé en ce que l'alignement de l'apport de métal fondu s'effectue en synchronisant le déplacement latéral du récipient intermédiaire sur celui de l'axe central de coulée.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la tête de la barre de démarrage lors d'un nouveau démarrage de la coulée continue est réglée sur la position de l'axe central de coulée à ce moment.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le changement de position de l'axe central de coulée est réalisé automatiquement par un calculateur de processus du système (10) de conduite du processus.
EP05783651A 2004-10-13 2005-09-16 Procede pour augmenter la duree de vie des parois de grands cotes d'une coquille reglable Not-in-force EP1819463B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0170704A AT500814B1 (de) 2004-10-13 2004-10-13 Verfahren zur erhöhung der lebensdauer der breitseitenwände einer verstellkokille
PCT/EP2005/010032 WO2006042603A1 (fr) 2004-10-13 2005-09-16 Procede pour augmenter la duree de vie des parois de grands cotes d'une coquille reglable

Publications (2)

Publication Number Publication Date
EP1819463A1 EP1819463A1 (fr) 2007-08-22
EP1819463B1 true EP1819463B1 (fr) 2008-07-09

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Application Number Title Priority Date Filing Date
EP05783651A Not-in-force EP1819463B1 (fr) 2004-10-13 2005-09-16 Procede pour augmenter la duree de vie des parois de grands cotes d'une coquille reglable

Country Status (6)

Country Link
EP (1) EP1819463B1 (fr)
KR (1) KR20070073901A (fr)
CN (1) CN100592944C (fr)
AT (2) AT500814B1 (fr)
DE (1) DE502005004678D1 (fr)
WO (1) WO2006042603A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT506673B1 (de) 2008-05-13 2012-07-15 Siemens Vai Metals Tech Gmbh Verfahren zur kühlmittelaufbringung auf einen gegossenen metallstrang in einer stranggiessanlage und stranggiessanlage dazu
CN104801683A (zh) * 2015-04-17 2015-07-29 钢铁研究总院 一种降低板坯结晶器在线调宽阻力的窄面铜板
CN113523207A (zh) * 2021-08-19 2021-10-22 常州市发振机械股份有限公司 一种可拼装的钢锭模

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216449B2 (fr) * 1972-08-14 1977-05-10
DE3604818A1 (de) * 1986-02-15 1987-08-20 Mannesmann Ag Motorsteuerung fuer die verstellung einer schmalseitenplatte von stranggiesskokillen fuer metall, insbesondere fuer stahl
DE3908328A1 (de) * 1989-03-10 1990-09-13 Mannesmann Ag Einrichtung zur regelung der konizitaet
ATE122945T1 (de) * 1990-03-27 1995-06-15 Siemens Ag Einrichtung zur lageregelung von maschinenteilen in hüttenwerken.
JP2639758B2 (ja) * 1991-08-01 1997-08-13 新日本製鐵株式会社 スラブ連続鋳造のスタート方法
DE19748305A1 (de) * 1997-10-31 1999-05-06 Schloemann Siemag Ag Stranggießkokille
DE19756164A1 (de) * 1997-12-17 1999-06-24 Km Europa Metal Ag Verfahren zur Herstellung eines Kokillenkörpers und Kokillenkörper
DE19933026A1 (de) * 1999-07-15 2001-01-18 Sms Demag Ag Stranggießkokille

Also Published As

Publication number Publication date
WO2006042603A1 (fr) 2006-04-27
CN100592944C (zh) 2010-03-03
CN101039765A (zh) 2007-09-19
EP1819463A1 (fr) 2007-08-22
KR20070073901A (ko) 2007-07-10
AT500814A1 (de) 2006-04-15
ATE400381T1 (de) 2008-07-15
DE502005004678D1 (de) 2008-08-21
AT500814B1 (de) 2006-11-15

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