EP1356879B1 - Lingotière de coulée continue - Google Patents

Lingotière de coulée continue Download PDF

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Publication number
EP1356879B1
EP1356879B1 EP03004607A EP03004607A EP1356879B1 EP 1356879 B1 EP1356879 B1 EP 1356879B1 EP 03004607 A EP03004607 A EP 03004607A EP 03004607 A EP03004607 A EP 03004607A EP 1356879 B1 EP1356879 B1 EP 1356879B1
Authority
EP
European Patent Office
Prior art keywords
coolant
row
bores
casting
copper plate
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
EP03004607A
Other languages
German (de)
English (en)
Other versions
EP1356879A3 (fr
EP1356879A2 (fr
Inventor
Karl Rittner
Uwe Kopfstedt
Wolfgang Dr. Hennig
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
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1356879A2 publication Critical patent/EP1356879A2/fr
Publication of EP1356879A3 publication Critical patent/EP1356879A3/fr
Application granted granted Critical
Publication of EP1356879B1 publication Critical patent/EP1356879B1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • 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
    • B22D11/055—Cooling the moulds

Definitions

  • the invention relates to a continuous casting mold for liquid metals, in particular for liquid steel, which can be cast at different casting speeds, approximately between 3 m / min to 10 m / min, wherein different thicknesses of the cast strand are provided as a slab as well as a thin slab and the heat by means can be discharged through guided in the direction of casting channels coolant.
  • the invention is based, to propose a vote of a minimum number of parameters of fundamental importance for the generation of a faultless end product the task.
  • the currently used version of the copper plates has a continuous row of cooling holes with a certain distance from each other.
  • This design is improved by arranging the coolant passages consisting of coolant bores in the copper plate with a predetermined distance from the hot side of the copper plate.
  • the distance in the row over the copper plate width and the flow cross sections of the coolant channels are matched to one another.
  • the coolant bores extend at a predetermined distance from each other across the width of the copper plate and with a predetermined length over the height of the copper plate.
  • the cooling intensity in the area of the meniscus is thereby enhanced by providing, for higher casting speeds with respect to the hot side, in addition to a front, first row of coolant bores, at least one second row of coolant bores arranged to the first row at an increased distance from the hot side is.
  • the casting speed can basically be increased considerably.
  • the introduction of a second row of coolant bores may be configured as another improvement in that the second row of coolant bores each has a coolant hole spaced apart from the hot side, between two coolant bores of the first row.
  • Improved heat dissipation may also be aided in that the second series of offset coolant bores is provided over an upper portion or over the entire height of the copper plate.
  • a cooling intensity change before or during the casting operation is possible in that the coolant holes of the first row and the second row are each connected to a separate coolant circuit.
  • a further embodiment consists in that the flow direction of the coolant in the first row and in the second row respectively from top to bottom or vice versa. In the return, the coolant quantities of two rows of coolant holes are regulated according to the required cooling intensity
  • the coolant quantities of the first row and the second row of coolant bores can be regulated as a function of the respective casting speed.
  • a vote can be made such that is passed for a low casting speed of the main flow of the coolant through the first row of coolant holes and a partial flow of the coolant through a reduced in the height of the mold plate length or the entire length of coolant holes.
  • the main flow of the coolant is carried out by a second row, which is designed in the height of the mold plate of reduced length or overall length from coolant bores and only a partial flow of the coolant through the first row of coolant bores.
  • the continuous casting mold consists on its broad sides (for slabs or thin slab cross-sections) of copper plates 1 with a copper plate thickness 1a, for example, 25 mm thickness.
  • the continuous casting mold forms in the exemplary embodiment a so-called funnel mold, as indicated on the hot side 4.
  • funnel coasters are eg in CSP systems used.
  • One of the broad sides bounds the liquid metal 5, in particular the liquid steel, and thus forms the hot side 4, wherein the liquid casting metal 5 is constantly maintained at the level of the bath level 4a.
  • the copper plate remaining thickness 1 c in front of a coolant channel 2 toward the hot side 4 is tuned.
  • the coolant channels 2 consisting of coolant holes 2a in the copper plate 1 are arranged at a predetermined distance 6, which substantially corresponds to the copper plate residual thickness 1c, to the hot side 4 of the copper plate 1 and a distance 7 between the next coolant hole 2a has.
  • Another criterion of the vote forms in addition to the distance 7 over the width 1b of the copper plate 1 a predetermined length 8 on the height 9 of the copper plate 1.
  • the length 8 may extend over the entire height 9 or the height 8 only extends into a middle Area and the lower area is cooled as before via cooling slots (not shown).
  • first row 10 of the coolant holes 2a at least one to the first row 10 at an increased distance 11 to the hot side 4, a second row 12 of coolant holes 2a arranged.
  • Row 10 is always used for the normal casting operation up to about 6 m / min. In this case, a partial flow for the row 12 is possible.
  • this second row 12 of coolant bores 2a is in each case an enlarged distance 11 to the hot side 4 arranged coolant bore 2a, which lies between two coolant holes 2a of the first row 10 (see. Fig. 3 ).
  • the second row 12 of offset coolant holes 2 a can only be provided over an upper portion, the length 8, in the copper plate 1.
  • the coolant holes 2a can also extend over the full height 9 of the copper plate 1.
  • the coolant holes 2a of the first row 10 and the second row 12 are each connected to a separate coolant circuit, which are operated alternately or simultaneously.
  • the diameters of the coolant bores 2a in the first row 10 can also be selected larger than the diameters of the coolant bores 2a in the second row 12. This results in different distances 11 to the hot side. 4
  • the flow direction 13 of the coolant 3 extends in the first row 10 and in the second row 12 each from top to bottom.
  • the further vote on different casting speeds of the liquid metal 5 is effected by; the coolant quantities of the first row 10 and the second row 12 of coolant bores 2a are regulated as a function of the respective casting speed (cf. Fig. 4 ).
  • the main flow of the coolant 3 is guided through the first row 10 of coolant bores 2a and a partial flow of the coolant 3 through the length 14 of the coolant bore 2a which is reduced in the height 9 of the mold plate 1.
  • Fig. 5 are the hot-side temperatures occurring in CSP plants depending on the casting speeds, the coolant velocities and the thickness 1a of the mold copper plates 1 can be seen.

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

Claims (8)

  1. Lingotière de coulée continue, qui sur ses côtés largeur comporte des plaques de cuivre (1) pour la coulée de métaux liquides, notamment pour de l'acier liquide, qui sont susceptibles d'être coulés à différentes vitesses de coulée, environ entre 3 m/minute et 10 m/minute, différentes épaisseurs de la barre de coulée étant prévues en tant que brame et brame mince, les plaques de cuivre (1) comportant des conduits (2) s'écoulant en direction de coulée, de l'agent réfrigérant (3) entraîné à travers les conduits (2) évacuant la chaleur ; et l'épaisseur résiduelle des plaques en cuivre (1 c) en amont d'un conduit (2) d'agent réfrigérant (3) vers le côté chaud (4), la disposition et la dimension des conduits (2) et la vitesse d'écoulement de l'agent réfrigérant (3) étant adaptées à l'ensemble de la plage des vitesses de coulée pour le métal de coulée (5) ; les conduits d'agent réfrigérant (2) consistant dans des perçages pour agent réfrigérant (2a) dans la plaque de cuivre (1) étant disposés à une distance (B) préalablement définie par rapport au côté chaud (4) de la plaque de cuivre (1) et les perçages pour agent réfrigérant (2a) s'écoulant à une distance préalablement définie (7) l'un par rapport à l'autre sur la largeur (1 b) de la plaque de cuivre (1) et sur une longueur (8) préalablement définie sur la hauteur (9) de la plaque de cuivre (1)
    caractérisée en ce que,
    pour des vitesses de coulées assez élevées, par rapport au côté chaud (4), en supplément d'une première rangée (10) antérieure de perçages pour agent réfrigérant (2a), il est prévu au moins une deuxième rangée (12) de perçages pour agent réfrigérant (2a), disposée par rapport à la première rangée (10) à une distance agrandie (11) par rapport au côté chaud (4).
  2. Lingotière de coulée continue selon la revendication 1,
    caractérisée en ce que,
    la deuxième rangée (12) de perçages pour agent réfrigérant (2a) comporte chaque fois un perçage pour agent réfrigérant (2a) disposé à une distance agrandie (11) par rapport au côté chaud (4), entre deux perçages pour agent réfrigérant (2a) de la première rangée (10).
  3. Lingotière de coulée continue selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que,
    la deuxième rangée (12) de perçages pour agent réfrigérant (2a) décalés est prévue sur une région partielle supérieure ou même sur toute la hauteur (9) de la plaque de cuivre (1).
  4. Lingotière de coulée continue selon l'une quelconque des revendications 1 à 3, caractérisée en ce que,
    les perçages pour agent réfrigérant (2a) de la première rangée (10) et de la deuxième rangée (12) sont raccordés respectivement sur un circuit d'agent réfrigérant séparé.
  5. Procédé d'utilisation d'une lingotière de coulée continue selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que,
    le sens d'écoulement (13) de l'agent réfrigérant (3) dans la première rangée (10) et dans la deuxième rangée (12) s'écoule respectivement du haut vers le bas ou inversement.
  6. Procédé selon la revendication 5,
    caractérisé en ce que,
    les quantités d'agent réfrigérant de la première rangée (10) et de la deuxième rangée (12) de perçages pour agent réfrigérant (2a) sont réglables en fonction de la vitesse de coulée respective.
  7. Procédé selon la revendication 5 ou 6,
    caractérisé en ce que,
    pour une basse vitesse de coulée, le courant principal de l'agent réfrigérant (3) est entraîné à travers la première rangée (10) de perçages pour agent réfrigérant (2a) et un courant partiel de l'agent réfrigérant (3) est entraîné sur une longueur réduite (14) dans la hauteur (9) de la plaque de lingotière (1) ou sur toute la longueur (14) de perçages pour agent réfrigérant (2a).
  8. Procédé selon l'une quelconque des revendications 5, 6 ou 7, caractérisé en ce que,
    pour les vitesses de coulée plus élevées, le courant principal de l'agent réfrigérant (3) est entraîné à travers une deuxième rangée (12) de perçages pour agent réfrigérant (2a) réalisée avec une longueur réduite (14) sur la hauteur (9) de la plaque de lingotière (1) ou sur toute la longueur (14) et seulement un courant partiel de l'agent réfrigérant (3) est entraîné à travers la première rangée (10) de perçages pour agent réfrigérant (2a).
EP03004607A 2002-04-23 2003-03-01 Lingotière de coulée continue Expired - Lifetime EP1356879B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10217906 2002-04-23
DE10217906A DE10217906A1 (de) 2002-04-23 2002-04-23 Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl

Publications (3)

Publication Number Publication Date
EP1356879A2 EP1356879A2 (fr) 2003-10-29
EP1356879A3 EP1356879A3 (fr) 2003-11-05
EP1356879B1 true EP1356879B1 (fr) 2008-02-27

Family

ID=28685230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004607A Expired - Lifetime EP1356879B1 (fr) 2002-04-23 2003-03-01 Lingotière de coulée continue

Country Status (3)

Country Link
EP (1) EP1356879B1 (fr)
AT (1) ATE387275T1 (fr)
DE (2) DE10217906A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008032672A1 (de) 2008-07-10 2010-01-14 Sms Siemag Aktiengesellschaft Stranggießkokille
IT1403036B1 (it) * 2010-11-25 2013-09-27 Danieli Off Mecc Cristallizzatore per colata continua
DE102017217263A1 (de) * 2017-09-28 2019-03-28 Sms Group Gmbh Stranggießkokille

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299627A (en) * 1992-03-03 1994-04-05 Kawasaki Steel Corporation Continuous casting method
DE19852473C5 (de) * 1998-11-13 2005-10-06 Sms Demag Ag Kokillenplatte einer Stranggießanlage
IT1310517B1 (it) * 1999-01-13 2002-02-18 Danieli Off Mecc Cristallizzatore per colata continua

Also Published As

Publication number Publication date
EP1356879A3 (fr) 2003-11-05
EP1356879A2 (fr) 2003-10-29
ATE387275T1 (de) 2008-03-15
DE50309235D1 (de) 2008-04-10
DE10217906A1 (de) 2003-11-06

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