EP0560061B1 - Dispositif et procédé pour la coulée continue du métal - Google Patents

Dispositif et procédé pour la coulée continue du métal Download PDF

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Publication number
EP0560061B1
EP0560061B1 EP93101931A EP93101931A EP0560061B1 EP 0560061 B1 EP0560061 B1 EP 0560061B1 EP 93101931 A EP93101931 A EP 93101931A EP 93101931 A EP93101931 A EP 93101931A EP 0560061 B1 EP0560061 B1 EP 0560061B1
Authority
EP
European Patent Office
Prior art keywords
metal
hot head
casting
level
hot
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
EP93101931A
Other languages
German (de)
English (en)
Other versions
EP0560061A1 (fr
Inventor
Wolfgang Dr. Schneider
Hans Peter Dr. Krug
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.)
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium 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 Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Publication of EP0560061A1 publication Critical patent/EP0560061A1/fr
Application granted granted Critical
Publication of EP0560061B1 publication Critical patent/EP0560061B1/fr
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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • 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
    • B22D11/147—Multi-strand plants

Definitions

  • the invention relates to a method and an arrangement for vertical continuous casting of metal in a hot-head mold with a level metal supply according to the preamble of claims 1 and 5, respectively.
  • Level metal feeds for hot-head molds are known.
  • a so-called hot-top casting process is described in the aluminum paperback (14th edition, 1984, p.23).
  • the feed metering of the metal melt does not take place, as is generally customary, via a nozzle-float system, which allows the melt to flow after the solidified metal, in particular aluminum, discharged downwards after the melt level has dropped, but instead by producing a continuous metal melt level through the Arranging the molds and melt feeds on one level.
  • a level connection of the melt up to the melting furnace is possible.
  • the liquid metal is fed to the continuous casting by simply adding water laterally from openings in the side wall of the metal feed trough arranged next to the molds and openings in a side wall of the mold. In this way, four or more molds can be supplied with molten metal at the same time.
  • the method described there and the associated arrangement have various disadvantages.
  • the one-sided, asymmetrical feeding of the molten metal can lead to turbulence, especially when starting up the plant.
  • the occurrence of temperature gradients from the feed trough to the opposite wall of the mold cannot be ruled out, so that the solidification behavior of the metal can be adversely affected.
  • Another disadvantage is the metal volume located in the feed trough, which does not flow off via the side wall, which in particular can no longer be supplied to the mold at the end of the casting process.
  • the object of the invention is to create a method and an arrangement which make it possible to avoid asymmetrical temperature gradients, turbulence and unusable metal volume when the metal supply is at the same level.
  • this object is achieved in a method of the generic type in that the level of a molten metal is produced in a hot-head mold and at the outlet opening of a melting furnace with a pouring channel which is guided symmetrically through the upper region of the hot-head mold and symmetrically through on its two side walls arranged outlet openings connects to the molten metal in the hot-head mold, the bottom of the trough being in a plane below the level of the outlet opening of the melting furnace and below the upper edge of the hot-head mold.
  • the pouring trough is advantageously guided through a plurality of hot-head molds located in the same plane.
  • the post-flow of metal is brought about by the vertical downward movement of the solidified metal molded body in the hot-head mold.
  • the arrangement according to the invention is characterized in that a casting trough, which conducts a metal flow into a hot-head mold open at the top, is guided symmetrically in and out through an insulation collar which closes off the upper region of the hot-head mold, in such a way that the bottom of the casting trough is below the intended level in the insulation collar the hot-head mold is located melt and that in the inner region of the insulation collar, the side walls of the launder have symmetrically arranged openings for the passage of the metal stream into the mold.
  • the trough Due to the direct symmetrical implementation of the trough with the symmetrically arranged openings for the passage of the metal flow, a largely laminar flow regime in the mold can be achieved. With this arrangement it is possible to distribute the metal flow evenly from the center of the molds to the circumference of the molds. The solidification zones of the resulting molded metal body are flowed directly onto, and a fine-celled, particularly uniform metal structure is achieved. This leads to an error-free edge zone of the shaped metal body, so that the previously required milling before further processing can be restricted to a substantially reduced edge area of the metal block. There are hardly any undesirable, asymmetrical temperature gradients, so that symmetrical solidification is possible. At the end of the casting process, the entire molten metal flows, practically quantitatively, into the molds. The trough can be connected to other hot-head molds. It is connected to the furnace.
  • the pouring channel with its outlet openings in the area of the insulation collar is surrounded on all sides by aluminum metal, it should preferably be made of ceramic material can be made in one piece.
  • the ceramic components should be strung together in a form-fitting manner.
  • a ceramic terminating element is used at the end to interrupt the metal flow. This consists of an end wall, which is preferably made of ceramic material and of the same height as the surrounding side walls of the trough. Should an extension of the trough become necessary later, the end element can be replaced as desired and attached to the new end of the trough.
  • the hot-head rolling ingot mold with a rectangular cross-section shown in FIG. 1 consists of the mold frame 4 provided with the cooling channels 6 and the insulation collar 2.
  • a hot-head strip 3, on which an insulation collar 2 is seated, is placed on a support surface 7 running around the mold frame 4.
  • the insulation collar 2 consists of an insert box 13 and is provided with an insulating lining.
  • the insulating collar 2 which closes the rolling ingot mold is broken through by a casting trough 1, the side wall 8 being flush with the end edge 9 of the insulating collar 2 upwards.
  • the trough 1 has symmetrically on its two side walls 8 discharge openings 10, which serve to supply the melt.
  • the metal stream 5, which comes from the furnace, not shown here, is by the Outflow openings 10 passed into the ingot die.
  • the extension 11 of the trough 1 leads to the next rolled ingot mold.
  • the metal level in the casting trough 1 and in the insert box 2 is the same.
  • the metal stream 5 arises from the vertical downward movement of the solidified rolling ingot in the rolling ingot mold.
  • Fig. 2 the hot-head rolled ingot mold is shown filled with melt. It can be seen that there is only one metal level in the entire casting system. The metal level in pouring channel 1 and insulation collar 2 extends just below the upper edge of channel 1 or collar 2. A simple level sensor 14 can be used in all molds to regulate the metal level. This controls the pouring furnace tilting movement in a known manner when pouring the molten metal into the channel 1. The flow pattern to be achieved with the invention can also be seen from FIG. 2. The main flow 5 is directed towards the far away narrow sides of the mold and brings about a uniform flow against the solidification front of the resulting metal block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Claims (10)

  1. Procédé de coulée continue verticale de métal dans une coquille à tête chaude avec alimentation du métal à un niveau constant, caractérisé en ce que l'identité de niveau d'un bain de métal en fusion dans une coquille à tête chaude et à l'ouverture de sortie d'un four de fusion est réalisée au moyen d'une rigole de coulée (1) qui est dirigée en symétrie à travers la région supérieure de la coquille à tête chaude et qui, par des ouvertures de sortie (10) symétriquement disposées sur ses deux parois latérales (8), réalise une liaison avec le bain de métal en fusion dans la coquille à tête chaude, le fond (12) de la rigole de coulée (1) se trouvant dans un plan situé en dessous du niveau de l'ouverture de sortie du four de fusion et en dessous du bord supérieur de la coquille à tête chaude.
  2. Procédé selon la revendication 1, caractérisé en ce que la rigole de coulée (1) est dirigée à travers plusieurs coquilles à tête chaude qui se trouvent dans le même plan.
  3. Procédé selon une des revendications 1 et 2, caractérisé en ce que la continuation de l'écoulement du métal est produite par le mouvement descendant vertical du corps moulé métallique solidifié dans la coquille à tête chaude.
  4. Procédé selon une des revendications précédentes, caractérisé en ce qu'on utilise pour réguler l'identité de niveau un seul détecteur de niveau (14) à l'ouverture de sortie du four de fusion.
  5. Dispositif de coulée continue verticale de métal dans une coquille à tête chaude avec alimentation du métal à un niveau constant, caractérisé en ce qu'une rigole de coulée (1), qui dirige un flux de métal (5) dans une coquille à tête chaude à dessus ouvert, entre et sort d'un collet isolant (2) fermant la région supérieure de la coquille à tête chaude, à travers lequel ladite rigole est symétriquement dirigée, de telle sorte que le fond (12) de la rigole de coulée (1) se trouve en dessous du niveau prévu du bain qui se trouve dans le collet isolant (2) de la coquille à tête chaude, et en ce que, dans la région intérieure du collet isolant (2), les parois latérales (8) de la rigole de coulée (1) présentent des ouvertures (10), symétriquement disposées, pour le passage du flux de métal (5).
  6. Dispositif selon la revendication 5, caractérisé en ce que la rigole de coulée (1) est reliée à d'autres coquilles à tête chaude.
  7. Dispositif selon une des revendications 5 et 6, caractérisé en ce que la rigole de coulée (1) est reliée au four de fusion.
  8. Dispositif selon une des revendications précédentes, caractérisé en ce qu'à l'intérieur de la coquille à tête chaude, la rigole de coulée (1) est constituée d'un corps moulé réalisé en matériau céramique.
  9. Dispositif selon une des revendications précédentes, caractérisé en ce qu'en présence de plusieurs coquilles, la rigole de coulée commune (1) est composée de pièces moulées céramiques.
  10. Dispositif selon une des revendications précédentes, caractérisé en ce qu'un élément d'obturation en matériau céramique est mis en place à la fin de la rigole de coulée (1) afin d'arrêter le flux de métal.
EP93101931A 1992-03-12 1993-02-08 Dispositif et procédé pour la coulée continue du métal Expired - Lifetime EP0560061B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4207895 1992-03-12
DE4207895A DE4207895A1 (de) 1992-03-12 1992-03-12 Verfahren und anordnung zum vertikalstranggiessen von metall

Publications (2)

Publication Number Publication Date
EP0560061A1 EP0560061A1 (fr) 1993-09-15
EP0560061B1 true EP0560061B1 (fr) 1995-09-27

Family

ID=6453896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101931A Expired - Lifetime EP0560061B1 (fr) 1992-03-12 1993-02-08 Dispositif et procédé pour la coulée continue du métal

Country Status (8)

Country Link
US (1) US5370173A (fr)
EP (1) EP0560061B1 (fr)
JP (1) JPH0710422B2 (fr)
AT (1) ATE128394T1 (fr)
AU (1) AU658981B2 (fr)
CA (1) CA2090946A1 (fr)
DE (2) DE4207895A1 (fr)
NO (1) NO930892L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6882685B2 (en) * 2001-09-18 2005-04-19 Microsoft Corporation Block transform and quantization for image and video coding
US8215376B2 (en) * 2008-09-01 2012-07-10 Wagstaff, Inc. Continuous cast molten metal mold and casting system
JP5394796B2 (ja) 2009-03-31 2014-01-22 トヨタ自動車株式会社 連続鋳造用ホットトップ及び連続鋳造方法
CN105665667A (zh) * 2016-03-25 2016-06-15 山东钢铁股份有限公司 用于连铸中间包防溅钢事故的摆槽及其制造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364080A (de) * 1958-10-07 1962-08-31 Aluminium Ind Ag Stranggiesseinrichtung mit einem Schwimmer zur Regulierung des Metallzuflusses beim Giessen von Leichtmetallen, insbesondere von Aluminium und Aluminiumlegierungen
GB944561A (en) * 1961-02-27 1963-12-18 Gen Electric Co Ltd Improvements in or relating to pouring arrangements for conductive liquids
AT230563B (de) * 1961-08-22 1963-12-10 Aluminium Ind Ag Verfahren und Einrichtung zum Konstanthalten der Spiegelhöhe einer Metallschmelze
US4069862A (en) * 1976-10-01 1978-01-24 Reynolds Metals Company Continuous casting mold with horizontal inlet
DE3041842C2 (de) * 1980-11-06 1984-01-19 Gosudarstvennyj naučno-issledovatel'skij proektnyj i konstruktorskij institut splavov i obrabotki cvetnych metallov "Giprocvetmetobrabotka", Moskva Vorrichtung zum Zuführen einer metallischen Schmelze in eine Stranggießkokille
DE3346650A1 (de) * 1983-12-20 1985-06-27 Schweizerische Aluminium Ag, Chippis Verfahren und vorrichtung zum bestimmen und regeln eines niveaus einer metallschmelze
DE4203337C2 (de) * 1992-02-06 1994-07-07 Vaw Ver Aluminium Werke Ag Verfahren zum Stranggießen von Metallen

Also Published As

Publication number Publication date
US5370173A (en) 1994-12-06
EP0560061A1 (fr) 1993-09-15
CA2090946A1 (fr) 1993-09-13
DE4207895A1 (de) 1993-09-16
AU658981B2 (en) 1995-05-04
JPH06292946A (ja) 1994-10-21
NO930892L (no) 1993-09-13
JPH0710422B2 (ja) 1995-02-08
AU3510293A (en) 1993-09-16
DE59300642D1 (de) 1995-11-02
NO930892D0 (no) 1993-03-11
ATE128394T1 (de) 1995-10-15

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