WO2012146220A1 - Tube plongeur à buse - Google Patents

Tube plongeur à buse Download PDF

Info

Publication number
WO2012146220A1
WO2012146220A1 PCT/DE2011/001798 DE2011001798W WO2012146220A1 WO 2012146220 A1 WO2012146220 A1 WO 2012146220A1 DE 2011001798 W DE2011001798 W DE 2011001798W WO 2012146220 A1 WO2012146220 A1 WO 2012146220A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
dip tube
bell
jacket
tube according
Prior art date
Application number
PCT/DE2011/001798
Other languages
German (de)
English (en)
Inventor
Edgar Schumacher
Renata Franzky
Original Assignee
Techcom Gmbh
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 Techcom Gmbh filed Critical Techcom Gmbh
Priority to EP11811517.9A priority Critical patent/EP2701867A1/fr
Priority to DE112011105197.2T priority patent/DE112011105197A5/de
Priority to PCT/DE2011/001798 priority patent/WO2012146220A1/fr
Publication of WO2012146220A1 publication Critical patent/WO2012146220A1/fr

Links

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
    • 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
    • B22D41/507—Pouring-nozzles giving a rotating motion to the issuing molten metal

Definitions

  • the invention relates to a dip tube with a nozzle for use in the
  • Immersion tube a bell-shaped jacket is arranged, which is open at the bottom.
  • the liquid metal flows laterally out of the nozzle at a predetermined angle and strikes the walls of the bell-shaped shell before it emerges downwardly from the opening during the casting process into the mold and solidifies.
  • a relatively high pressure builds up, which leads to the bottom of the nozzle pops out » whereby the further casting process is interrupted and completely prevented.
  • DE 24 42 915 discloses a pouring tube with a closed bottom and opposite side openings are disclosed, which are surrounded by so-called baffles against which the liquid steel bounces when he the pouring tube leaves. Normally, the angle between the longitudinal axis of this pouring tube and the central axis of the outlet openings 90 °, whereby the structure of a laminar flow is difficult, which is disadvantageous to the outflow of the liquid metal and the type of crystallization in the
  • the dip tube is arranged with a nozzle arranged in the lower region with a bottom and at least one side channel over a bell-shaped shell is characterized in that the side walls of the bell-shaped shell have at least one bore and the bottom of the nozzle also has at least one bore, from where a (compressed) medium can flow out.
  • the cross section of the bell-shaped shell is slightly elongated and preferably depends on the shape of the molten metal receiving the mold.
  • the bell-shaped shell has at least two opposing planar surfaces whose lengths are variable.
  • angle (u) between the plane-parallel walls and the axis of the exit bores of the nozzle is substantially an acute angle, which is preferably between about 20 ° and 45 °
  • the two opposing plane-parallel walls are smoothly interconnected by two arc walls on the inner surfaces, the length of the plane-parallel walls is arbitrary, so that in extreme cases, the two curved walls abut each other with their sides and the
  • Cross-section perpendicular to the longitudinal axis through the jacket is substantially round.
  • the nozzle is arranged in the center of the shell.
  • heat-resistant layer which is preferably a ceramic glass fiber layer, coated.
  • Figure 1 a schematic QueritessdarsteUung of
  • Figure 3 a schematic cross-sectional view of
  • FIG. 4 shows two schematisehe cross-sectional views
  • FIG. 1 shows a schematic cross-sectional view through the lower part of the catch tube 1 with a nozzle, which has two outlet channels 5, 6 in the present exemplary embodiment.
  • a nozzle which has two outlet channels 5, 6 in the present exemplary embodiment.
  • the dip tube 1, at whose lower end at least one outlet channel 5 is arranged, consists essentially of a refractory material, which withstands a temperature of up to about 1800 ° C.
  • the lower side of the bell-shaped shell 4 is completely open, so that the liquid metal can buy freely. From this opening of the bell-shaped shell, the liquid metal enters theMonbefflettnis 12 (mold) in which the crystallization of the liquid metal takes place.
  • the liquid metal flows with a relatively high
  • FIG. 2 shows a schematic cross-sectional drawing along the section line A-A, rotated by 90 ° with respect to FIG. From Figure 2 shows that the dip tube bell 4 is not rotationally symmetrical to the central axis of the dip tube 1.
  • These curved walls of the giockenähn borrow shell 4 have at least one bore 14, 14 ', through which a compressed medium can escape during pressure build-up under the jacket.
  • FIG. 3 shows a schematic cross-sectional view in plan view, in which the section line runs along the section line B-B in FIG.
  • the cross-sectional shape of the bell-shaped shell 4 depends essentially on the shape of the receptacle 2 (mold), which receives the liquid metal.
  • the mold is rectangular in plan view, whereby the cross-sectional shape of the gtockenähnlichen hood 4 is formed oval.
  • the jacket 4 has two plane-parallel walls 8, 9, which are arranged on both sides of the end of the dip tube 1. On both sides of the plane-parallel walls 8, 9 close smoothly and smoothly on each side to a zyi indian Haibschaie, so that the total cross-section is substantially oval.
  • the immersion tube 1 is arranged in the center of the g curls shaped like 4, which at the end has two Austnttskanäle 5, 6, which lie on a common axis 7, the ⁇ with the plane-parallel walls on both sides of an angle which is essentially an acute angle and is between 20 ° and 45 ° degrees.
  • the radius R of the cylindrical half shells of the shell 4 depends essentially on the geometric dimensions of the mold 12.
  • FIG. 4 shows a schematic cross-section along the section line B-B in FIG. 1, in which two dip tube nozzles are arranged in a mold 12 '.
  • the special thing about this arrangement is that the two
  • Exit channels 5, 6, which are located on a common axis 7, are arranged at the second dip tube V rotated by 90 ° degrees, so that the directions of the exiting flows of the fl Organic Frameworkts from two lower openings of the bell-shaped casing 4, 4 'initially a common Turn direction and thus more evenly distributed in the mold 12 '.
  • I in this present embodiment are in the respective bell-shaped
  • Casing walls a total of four holes 13, 13 ', 14, 14 * arranged the easy escape of flows of compressed media, eg. B.

Landscapes

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

Abstract

L'invention concerne un tube plongeur (1) destiné à être utilisé dans la métallurgie, à l'extrémité inférieure duquel est agencée une buse munie de deux canaux d'évacuation (5, 6) pour le métal liquide. Une enveloppe (4) ayant une fonction de guidage des flux pour le métal liquide sortant est agencée sur l'extrémité du tube plongeur (1). Le fond (2) de la buse et les parois de l'enveloppe (4) en forme de cloche comportent au moins un alésage par lequel un fluide comprimé, par exemple de l'air, peut s'échapper.
PCT/DE2011/001798 2011-04-29 2011-04-29 Tube plongeur à buse WO2012146220A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11811517.9A EP2701867A1 (fr) 2011-04-29 2011-04-29 Tube plongeur à buse
DE112011105197.2T DE112011105197A5 (de) 2011-04-29 2011-04-29 Tauchrohr mit Düse
PCT/DE2011/001798 WO2012146220A1 (fr) 2011-04-29 2011-04-29 Tube plongeur à buse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2011/001798 WO2012146220A1 (fr) 2011-04-29 2011-04-29 Tube plongeur à buse

Publications (1)

Publication Number Publication Date
WO2012146220A1 true WO2012146220A1 (fr) 2012-11-01

Family

ID=45528857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2011/001798 WO2012146220A1 (fr) 2011-04-29 2011-04-29 Tube plongeur à buse

Country Status (3)

Country Link
EP (1) EP2701867A1 (fr)
DE (1) DE112011105197A5 (fr)
WO (1) WO2012146220A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442915A1 (de) 1973-09-11 1975-03-13 Voest Ag Giessrohr mit geschlossenem boden und einander gegenueberliegenden seitlichen oeffnungen
EP0309188A1 (fr) * 1987-09-24 1989-03-29 Foseco International Limited Busettes de coulée
DE19727649A1 (de) * 1997-06-28 1999-01-14 Didier Werke Ag Keramischer Verbundkörper
JP2001096344A (ja) * 1999-09-28 2001-04-10 Toshiba Ceramics Co Ltd 浸漬ノズル
DE69802103T2 (de) * 1997-08-06 2002-06-06 Vesuvius France Sa Giessrohr für eine stranggiesskokille
DE10150032A1 (de) * 2001-07-13 2003-01-30 Heraeus Electro Nite Int Feuerfester Ausguss
RU2236326C2 (ru) * 2002-11-04 2004-09-20 Хлопонин Виктор Николаевич Способ непрерывной разливки стали из промежуточного ковша в кристаллизатор и погружной стакан для его реализации
EP2172290A1 (fr) 2007-07-04 2010-04-07 TECHCOM GmbH Busette immergée

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442915A1 (de) 1973-09-11 1975-03-13 Voest Ag Giessrohr mit geschlossenem boden und einander gegenueberliegenden seitlichen oeffnungen
EP0309188A1 (fr) * 1987-09-24 1989-03-29 Foseco International Limited Busettes de coulée
DE19727649A1 (de) * 1997-06-28 1999-01-14 Didier Werke Ag Keramischer Verbundkörper
DE69802103T2 (de) * 1997-08-06 2002-06-06 Vesuvius France Sa Giessrohr für eine stranggiesskokille
JP2001096344A (ja) * 1999-09-28 2001-04-10 Toshiba Ceramics Co Ltd 浸漬ノズル
DE10150032A1 (de) * 2001-07-13 2003-01-30 Heraeus Electro Nite Int Feuerfester Ausguss
RU2236326C2 (ru) * 2002-11-04 2004-09-20 Хлопонин Виктор Николаевич Способ непрерывной разливки стали из промежуточного ковша в кристаллизатор и погружной стакан для его реализации
EP2172290A1 (fr) 2007-07-04 2010-04-07 TECHCOM GmbH Busette immergée

Also Published As

Publication number Publication date
DE112011105197A5 (de) 2014-04-30
EP2701867A1 (fr) 2014-03-05

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