EP0151802A2 - Dispositif pour l'introduction de métal liquide, en particulier d'acier liquide dans une coquille de coulée continue - Google Patents

Dispositif pour l'introduction de métal liquide, en particulier d'acier liquide dans une coquille de coulée continue Download PDF

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Publication number
EP0151802A2
EP0151802A2 EP84116319A EP84116319A EP0151802A2 EP 0151802 A2 EP0151802 A2 EP 0151802A2 EP 84116319 A EP84116319 A EP 84116319A EP 84116319 A EP84116319 A EP 84116319A EP 0151802 A2 EP0151802 A2 EP 0151802A2
Authority
EP
European Patent Office
Prior art keywords
continuous casting
section
pouring
slope
casting mold
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.)
Granted
Application number
EP84116319A
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German (de)
English (en)
Other versions
EP0151802A3 (en
EP0151802B1 (fr
Inventor
Peter Dr. -Ing. Voss-Spilker
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.)
Vodafone GmbH
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=6226760&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0151802(A2) "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
Priority to AT84116319T priority Critical patent/ATE41337T1/de
Publication of EP0151802A2 publication Critical patent/EP0151802A2/fr
Publication of EP0151802A3 publication Critical patent/EP0151802A3/de
Application granted granted Critical
Publication of EP0151802B1 publication Critical patent/EP0151802B1/fr
Expired 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles

Definitions

  • the invention relates to a device for introducing molten metal, in particular molten steel, into a continuous casting mold, with at least one pouring tube, which connects a storage container to the continuous casting mold.
  • Such a device connects the storage container to the continuous casting mold in terms of flow technology, prevents greater heat losses of the molten metal and essentially protects the molten metal from reoxidation.
  • the casting of molten metal, in particular of liquid steel, on vertical continuous casting plants is limited to certain format dimensions with small dimensions of the cast strand according to the current state of the art. Below these format dimensions, it is no longer possible to ensure that the molten metal flows from the storage container into the continuous casting mold.
  • the casting of dimensions in the range from 70 mm diameter or square to 120 mm diameter or square is currently only possible by free casting, i.e. possible by the free fall of the molten metal, the pouring of the molten metal by a dip spout having to be dispensed with.
  • the pouring jet runs directly from the storage container into the continuous casting mold.
  • the pouring stream must be surrounded by a protective gas curtain.
  • a protective gas curtain is associated with additional costs for the device expenditure and for the operation.
  • the invention is therefore based on the task of proposing a device for particularly small or narrow casting cross-sections, which allows the molten metal, in particular molten steel, to be fluidically favorable for so-called thin strands, without major heat loss or without unduly increasing the risk of reoxidation in the Introduce the pouring opening of the continuous casting mold.
  • a metal melt guide is provided for continuous casting molds which have a casting cross section of less than 70 mm width or 70 mm and more length or a casting cross section less than 70 mm round or square cross section, which consists of a closed upper Section and a directly adjoining lower, partially open section assigned to the pouring opening of the continuous casting mold, the open section guiding the metal melt at at least part of the flow cross section.
  • This device has the advantages of ensuring the greatest possible flow guidance while avoiding the free fall of the molten metal, furthermore avoiding temperature losses under the given circumstances as far as possible and likewise largely preventing reoxidation.
  • An important advantage of the invention is the possibility created to introduce the molten metal into very narrow casting spaces of continuous casting molds without wetting the upper edge of the continuous casting mold. The theory of the invention therefore creates the conditions for the casting of extremely thin cast strands.
  • the lower open section extends obliquely to perpendicular.
  • the oblique to vertical insertion of the molten metal advantageously favors the solidification conditions within the continuous casting mold.
  • the lower open section consists of a pouring tube with an annular cross section cut at an angle at its pouring end.
  • the pouring tube forms the greatest possible guidance for the flow of the molten metal, so that inflow conditions arise here similar to dip tubes in which the molten metal emerges below the pouring level.
  • a turbulent flow can be avoided in particular in that the lower open section consists of a run-off slope provided below the pouring pipe and directed into the continuous casting mold.
  • Such a bevel has the advantage of simultaneously distributing the molten metal in the longitudinal direction of the continuous casting mold and promoting a laminar flow.
  • drain slope is provided separately from the pouring pipe.
  • overflow webs are provided on the run-off edge of the run-off slope and / or on the side ends of the run-off slope. Such overflow webs also distribute the molten metal easily in a continuous casting mold extending in the second dimension.
  • the molten metal is guided out of the storage container 1 through the regulating and closing mechanism 2 and through the outlet nozzle 3 by means of the pouring pipe 4 into the continuous casting mold 7.
  • the continuous casting mold 7 forms a very narrow casting space 8.
  • the pouring tube 4 has a closed upper section 4a and an immediately adjoining lower, partially open section 5.
  • the lower section 5 tapers from the point 5a (beginning of the lower section 5) to the point 5b, the pouring tube 4 between the points 5a and 5b having approximately the shape of a groove.
  • the molten metal 9 therefore flows, guided through the pouring pipe 4, up to the top of the continuous mold upper edge 7a of the continuous casting mold 7 and into the continuous casting mold 7 up to the casting level 6.
  • the lower section 5 projects into the pouring opening 7b of the continuous casting mold 7.
  • the flow cross-section 10 supporting the flow is formed in this first embodiment by an extension of the pouring tube 4 itself.
  • a second exemplary embodiment (FIG. 2) provides a storage container 1 with a regulating and closing mechanism 2 and the outlet nozzle 3 which is offset laterally to the continuous casting mold 7 and in which the pouring pipe 4 runs at an angle 11, which results in a variable metal melt flow in the area of the casting level 6 results in the very narrow casting space 8.
  • the first and second exemplary embodiments each presuppose an annular cross section 12 of the pouring tube 4.
  • the upper-closed section 4a and the lower, partially open section 5 are designed separately from one another in the mold, which is associated with advantages in the production of refractory parts by arranging a run-off slope 13 under the pouring end 4b from which the molten metal 9 flows into the continuous casting mold 7 and forms the controlled casting level 6.
  • the run-off slope 13 is advantageously mounted on the support 14, which is adjustable in angle is fixed at a fixed point 15.
  • the run-off slope 13 consists of refractory materials, similar to the pouring pipe 4. In the longitudinal extension of the pouring chamber 8 (FIG.
  • the run-off slope 13 provided separately from the pouring pipe 4 is designed to be correspondingly long and can melt the metal 9 in a laminar flow 17 on the casting level 6.
  • the lower, partially open section 5 can also be provided with a reoxidation protection 20, for example inert gas being conducted into the interior 20a.
  • the run-off slope 13 in section 5 is made together with the pouring pipe 4 from a common part.
  • the run-off slope 13 can be designed in cooperation with the outlet opening 4c to form a flow-adapted steering channel 13a (FIG. 6).
  • the run-off slope 13 is particularly suitable for distributing the molten metal 9 in a continuous casting mold 7 for a so-called thin strand with mold broad sides of less than 100 mm.
  • the run-off slope 13 or the lower open section 5 can be kept so small in their dimensions at the lower end that the molten metal 9 can be passed in laminar flow without difficulty into the very narrow continuous casting mold 7, metal splashes being avoided on the continuous casting mold upper edge 7a will.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP84116319A 1984-02-04 1984-12-27 Dispositif pour l'introduction de métal liquide, en particulier d'acier liquide dans une coquille de coulée continue Expired EP0151802B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84116319T ATE41337T1 (de) 1984-02-04 1984-12-27 Vorrichtung fuer die einleitung von metallschmelze, insbesondere von stahlschmelze in eine stranggiesskokille.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3403892A DE3403892C2 (de) 1984-02-04 1984-02-04 Vorrichtung für die Einleitung von Metallschmelze, insbesondere von Stahlschmelze, in eine Stranggießkokille
DE3403892 1984-02-04

Publications (3)

Publication Number Publication Date
EP0151802A2 true EP0151802A2 (fr) 1985-08-21
EP0151802A3 EP0151802A3 (en) 1986-04-30
EP0151802B1 EP0151802B1 (fr) 1989-03-15

Family

ID=6226760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84116319A Expired EP0151802B1 (fr) 1984-02-04 1984-12-27 Dispositif pour l'introduction de métal liquide, en particulier d'acier liquide dans une coquille de coulée continue

Country Status (4)

Country Link
EP (1) EP0151802B1 (fr)
JP (2) JPS6178539A (fr)
AT (1) ATE41337T1 (fr)
DE (1) DE3403892C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2656945A1 (fr) * 2012-04-26 2013-10-30 SMS Concast AG Busette de coulée ignifuge pour une lingotière destinée à la coulée en continu de métaux en fusion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558379A1 (de) * 1967-03-24 1972-03-23 Vesuvius Crucible Co Vorrichtung zum Giessen geschmolzenen Metalls aus einem Behaelter
CH525732A (de) * 1968-08-23 1972-07-31 Voest Ag Verfahren zur Herstellung von Strängen im Stranggiessverfahren und Vorrichtung zur Durchführung des Verfahrens
AT310970B (de) * 1971-10-21 1973-10-25 Voest Ag Feuerfestes Gießrohr zum Stranggießen schmelzflüssiger Metalle
DE2919880A1 (de) * 1979-05-17 1980-11-27 Didier Werke Ag Giessrohr

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867978A (en) * 1973-04-12 1975-02-25 Concast Inc Method and apparatus for introduction of steel into a continuous casting mold
CH628543A5 (de) * 1978-06-01 1982-03-15 Concast Ag Verfahren und vorrichtung zum stranggiessen von metall in ein- oder mehrstranganlagen.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558379A1 (de) * 1967-03-24 1972-03-23 Vesuvius Crucible Co Vorrichtung zum Giessen geschmolzenen Metalls aus einem Behaelter
CH525732A (de) * 1968-08-23 1972-07-31 Voest Ag Verfahren zur Herstellung von Strängen im Stranggiessverfahren und Vorrichtung zur Durchführung des Verfahrens
AT310970B (de) * 1971-10-21 1973-10-25 Voest Ag Feuerfestes Gießrohr zum Stranggießen schmelzflüssiger Metalle
DE2919880A1 (de) * 1979-05-17 1980-11-27 Didier Werke Ag Giessrohr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2656945A1 (fr) * 2012-04-26 2013-10-30 SMS Concast AG Busette de coulée ignifuge pour une lingotière destinée à la coulée en continu de métaux en fusion

Also Published As

Publication number Publication date
JPS6347542B2 (fr) 1988-09-22
JPH0115343B2 (fr) 1989-03-16
DE3403892A1 (de) 1985-08-14
EP0151802A3 (en) 1986-04-30
ATE41337T1 (de) 1989-04-15
DE3403892C2 (de) 1986-08-14
JPS6178539A (ja) 1986-04-22
EP0151802B1 (fr) 1989-03-15
JPS63290667A (ja) 1988-11-28

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