EP3200941B1 - Dispositif et procédé d'ouverture d'un canal de coulée de cuves métallurgiques - Google Patents

Dispositif et procédé d'ouverture d'un canal de coulée de cuves métallurgiques Download PDF

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Publication number
EP3200941B1
EP3200941B1 EP15775426.8A EP15775426A EP3200941B1 EP 3200941 B1 EP3200941 B1 EP 3200941B1 EP 15775426 A EP15775426 A EP 15775426A EP 3200941 B1 EP3200941 B1 EP 3200941B1
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EP
European Patent Office
Prior art keywords
opening
plug
gas
slide
pouring
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.)
Active
Application number
EP15775426.8A
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German (de)
English (en)
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EP3200941A1 (fr
Inventor
Uwe DE FRIES
Ulf SPETZLER
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.)
Hermann Rauen Gmbh&co Vorm Steinhandel Rauen
Original Assignee
Hermann Rauen Gmbh&co Vorm Steinhandel Rauen
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Publication of EP3200941A1 publication Critical patent/EP3200941A1/fr
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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
    • B22D41/14—Closures
    • B22D41/44—Consumable closure means, i.e. closure means being used only once
    • B22D41/46—Refractory plugging masses
    • B22D41/465—Unplugging a vessel discharge port
    • 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
    • B22D41/14—Closures
    • 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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • 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
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection

Definitions

  • the invention relates to a device for opening a pouring channel of metallurgical vessels such as ladles or the like, the pouring channel being arranged on the lined bottom of the vessel, with a slide closure having at least two slide plates with a stationary slide plate connected to the vessel and with at least one with this Slidable slide plate in operative contact, all slide plates having at least one pouring opening and being displaceable relative to one another in such a way that the pouring openings are made to coincide with the opening and outflow of the melt, a plug being arranged above the slide closure, the size of which exceeds the diameter of the pouring channel and which is connected to the lining of the vessel and, wherein the slide closure has a gas supply line, and a method for operating such a device.
  • the prior art therefore also contains examples of constructions in which attempts have been made to operate the stopper from the underside of the container (such as, for example US 2,863,189 or US 3,651,825 ).
  • a disadvantage of the pan slide closures is, in particular, the fact that so-called “slide filler sand” must be used to protect the metallic slide closures, which sand is filled above the closed slide closure into a wear sleeve located there before the pan is filled with melt.
  • the sand provides good protection for the slide lock.
  • the problem here is the unavoidable entry of gate filler sand in distribution channels and molds, which lead to loss of output through so-called 'precursors'. Cracks in semi-finished products in the area of the block feet or a deterioration in the degree of cleanliness when changing pans are also disadvantageous.
  • a generic device with all the features of the preamble of claim 1 is from the FR 24 27 866 A1 known.
  • the object of the invention is to improve the quality by reducing the oxide input in the continuous casting distributor and block molds and thus to achieve an improvement in economy by dispensing with filler sand.
  • this object is achieved in that the gas supply line is arranged in the displaceable slide plate in such a way that during the opening process, before the pouring channel is opened, the outlet of the gas supply line is connected to the opening of the stationary slide plate and that the gas supply line acts as a storage container Gas storage is connected and the gas storage can be supplied with gas via a capillary line.
  • the use of sliding filler sand and the associated disadvantages can be completely dispensed with in a simple construction.
  • the object is achieved by pneumatically releasing the plug closing the pouring spout by opening the spout by applying a pressurized gas to the gas supply line, and by using the slide valve as a valve to apply gas to the pouring spout. After removal, the stopper floats to the surface of the melt. Deposits caused by filler sand in the outlet opening can be reliably avoided by the method according to the invention.
  • the device according to the invention and the method according to the invention allow electronic monitoring of the opening process since the slide closure is used as a valve.
  • the slide plate acts as a valve for opening or closing the gas supply. Due to the replacement of the slide filler sand with a stopper made of refractory material with preferably lower oxygen activity, precursors can be reduced or even avoided in a simple manner and there are no sand deposits in the outlet opening. In addition, there is a significant improvement in occupational safety, since burn-on can be reliably prevented.
  • a perforated brick is integrated into the fireproof lining of the vessel above the slide closure.
  • the size of the opening is expediently dimensioned such that a wear sleeve can be arranged therein, through the opening of which the melt can flow off after the pouring channel has been opened.
  • Another embodiment of the invention provides that the wear sleeve is funnel-shaped in its upper region. In this way, a uniform outflow of the melt is facilitated.
  • the geometry of the underside of the stopper is matched to the particular shape of the wear sleeve.
  • the shape can be conical, conical, rounded, stepped or combined.
  • the stopper is fixed in the wear sleeve by means of a refractory mortar.
  • the amount of mortar used must be such that it ensures a sufficiently tight connection to the wear sleeve and the stopper is nevertheless "blown free" by the gas supplied. can be.
  • Another preferred embodiment of the invention provides that the wear sleeve and the plugs fixed therein are pre-assembled as a unit for insertion into a metallurgical vessel.
  • a pouring sleeve is arranged below the slide closure.
  • This pouring sleeve is preferably connected to the lowest slide plate, for example in a design as an interchangeable spout with a bayonet catch.
  • the gas supply line is connected to a storage container which acts as a gas store.
  • the pouring sleeve be preheated before the slide closure is opened.
  • Another preferred embodiment of the method according to the invention provides that the opening process is electronically controlled or regulated. This enables reproducible opening conditions to be achieved.
  • a perforated brick 1 which consists of a block made of refractory material with a square or round cross section and which is inserted into the bottom of a metallurgical vessel (not shown) and integrated in its wear lining.
  • a wear sleeve 2 is inserted, which has a central opening 3, which is widened in a funnel shape in its upper region 4.
  • the displaceable slide plate 7 of the slide closure has a gas supply line 10 with an outlet 11 located on the upper side of the slide plate 7.
  • a stopper 12 is arranged above the slide closure, the size of which exceeds the diameter of the pouring channel and which is connected to the wear sleeve 2 by means of a refractory cement 13. Furthermore, the gas supply line 10 can be pressurized with a pressurized gas in such a way that the stopper 12 can be pneumatically released from its closed position to release the outlet channel.
  • the displaceable slide plate 7 of the slide closure is shifted to the right in the illustrated and in this respect preferred exemplary embodiment until the gas supply line 10 is connected with its outlet 11 to the opening 6 of the slide plate 5, as in FIG Fig. 3 is shown.
  • the build-up of the gas pressure releases the plug 12 from the wear sleeve 2 ( Fig. 4 ) and floats in the melt.
  • the material for the plug 12 and the wear sleeve 2 is preferably an alumina cement.
  • a further movement of the displaceable slide plate 7 of the slide closure first closes the outlet 11 of the gas supply line 10 and then completely exposes the outlet channel, so that the melt can flow out of the vessel, as with the arrow in Fig. 5 is indicated.
  • Fig. 6 shown that the gas supply line 10 is connected to a gas storage 14, which in turn is supplied with the pressurized gas only via a capillary line 15.
  • a sudden relaxation takes place through the valve-like opening when the outlet 11 of the gas supply line 10 is connected to the opening 6 in the stationary slide plate 5 in order to detach the plug 12.
  • gas volume surges and a resulting delay in boiling can be reliably avoided.
  • the device according to the invention can be controlled and / or regulated electronically so that reproducible opening conditions can be achieved.
  • the device shown is only a preferred exemplary embodiment and is in no way intended to limit the basic idea of the invention.
  • the invention can also be used with slide closures made of three slide plates if an improved fit is desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (14)

  1. Dispositif d'ouverture d'un canal de coulée de conteneurs métallurgiques ou analogues, sachant que le canal de coulée est disposé sur le fond revêtu du conteneur, avec un fermeture coulissante, dotée d'au moins deux plaques coulissantes (5, 7), dont une plaque coulissante, (5), stationnaire et reliée au conteneur, et au moins une plaque coulissante (7), déplaçable, en contact actif avec celle-ci, sachant que toutes les plaques coulissantes (5, 7) sont dotées d'au moins une ouverture de coulée (6, 8) et peuvent être déplacées les unes par rapport aux autres de manière à ce que, pour l'ouverture et la coulée des fontes, les ouvertures de coulée (6, 8) soient amenées en superposition concordante, sachant que, au-dessus de la fermeture coulissante, est disposé un bouchon (12), dont la taille dépasse le diamètre du canal de coulée et qui est relié au revêtement du conteneur, et sachant que la fermeture coulissante est dotée d'une conduite d'amenée de gaz (10) et sachant que la conduite d'amenée de gaz (10) est soumis à un gaz sous pression de manière à ce que le bouchon (12) puisse quitter pneumatiquement sa position de fermeture pour libérer le canal de coulée, caractérisé en ce que la conduite d'amenée de gaz (10) est disposée dans la plaque coulissante (7) déplaçable de manière à ce que, lors du processus d'ouverture, avant la libération du canal de coulée, la sortie (11) de la conduite d'amenée de gaz (10) soit relié à l'ouverture (6) de la plaque coulissante (5) stationnaire et que la conduite d'amenée de gaz (10) soit reliée à un réservoir de gaz (14) destiné au stockage et que le réservoir de gaz (14) puisse recevoir le gaz par une conduite capillaire (15).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que,
    au-dessus de la fermeture coulissante, une pierre percée (1) est intégrée dans le revêtement réfractaire du conteneur.
  3. Dispositif selon la revendication 2,
    caractérisé en ce que,
    dans l'ouverture de la pierre percée (1), est disposé un manchon d'usure (2).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    la partie supérieure (4) du manchon d'usure (2) présente la forme d'un entonnoir.
  5. Dispositif selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le bouchon (12) est fabriqué en matériau réfractaire à faible activité oxygène.
  6. Dispositif selon la revendication 5,
    caractérisé en ce que
    la géométrie du côté inférieur du bouchon (12) correspond à la forme du manchon d'usure (2) respectif.
  7. Dispositif selon revendication 5 ou 6,
    caractérisé en ce que
    le bouchon (12) est fixé dans le manchon d'usure (2) au moyen de mortier réfractaire (13).
  8. Dispositif selon la revendication 7,
    caractérisé en ce que
    le manchon d'usure et le bouchon (12) fixé dans celui-ci sont pré-confectionnés, en tant qu'unité, destinée à être insérée dans un conteneur métallurgique.
  9. Dispositif selon l'une des revendications 1 à 8,
    caractérisé en ce que,
    au-dessous de la fermeture coulissante, est disposé un manchon de versement (9).
  10. Procédé d'exploitation d'un dispositif d'ouverture d'un canal de coulée de conteneurs métallurgiques, comme cuves de coulée et analogues selon l'une des revendications 1 à 9,
    caractérisé en ce que,
    pour ouvrir le canal de coulée, la conduite de gaz est soumise à un pression telle que le bouchon, qui obstrue le canal de coulée, soit pneumatiquement éjecté et que la fermeture coulissante est utilisée en tant que soupape lorsque canal de coulée est soumis au gaz.
  11. Procédé d'exploitation selon la revendication 10,
    caractérisé en ce que
    le bouchon, après avoir été expulsé hors du canal de coulée, est projeté dans la fonte et nage sur la surface de celle-ci.
  12. Procédé selon revendication 10 ou 11,
    caractérisé en ce que
    l'alimentation en gaz de la conduite de gaz a lieu à partir d'un réservoir de gaz sous pression, sachant que la pression, qui règne dans le réservoir est calculée de manière à ce que le gaz puisse éjecter le bouchon en surmontant la pression ferrostatique de la fonte.
  13. Procédé selon l'une des revendications 10 à 12,
    caractérisé en ce que
    le manchon de coulée est préchauffé avant l'ouverture de la fermeture coulissante.
  14. Procédé selon l'une des revendications 10 à 13,
    caractérisé en ce que
    le processus d'ouverture est commandé ou, respectivement, réglé électroniquement.
EP15775426.8A 2014-10-01 2015-09-30 Dispositif et procédé d'ouverture d'un canal de coulée de cuves métallurgiques Active EP3200941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014114301.9A DE102014114301A1 (de) 2014-10-01 2014-10-01 Vorrichtung und Verfahren zum Öffnen eines Ausgusskanals von metallurgischen Gefäßen
PCT/EP2015/072562 WO2016050847A1 (fr) 2014-10-01 2015-09-30 Dispositif et procédé d'ouverture d'un canal de coulée de cuves métallurgiques

Publications (2)

Publication Number Publication Date
EP3200941A1 EP3200941A1 (fr) 2017-08-09
EP3200941B1 true EP3200941B1 (fr) 2020-02-26

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EP15775426.8A Active EP3200941B1 (fr) 2014-10-01 2015-09-30 Dispositif et procédé d'ouverture d'un canal de coulée de cuves métallurgiques

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Country Link
EP (1) EP3200941B1 (fr)
DE (1) DE102014114301A1 (fr)
WO (1) WO2016050847A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018192619A1 (fr) * 2017-04-20 2018-10-25 Ksm Castings Group Gmbh Système à vanne de coupure, installation de fonderie et procédé de fonderie
CN113976873B (zh) * 2021-10-13 2023-02-17 邯郸钢铁集团有限责任公司 一种钢包水口下注引流砂装置及其工艺
CN114523096A (zh) * 2022-03-28 2022-05-24 无锡巨力重工股份有限公司 一种新型兑铁车
CN117961044B (zh) * 2024-04-01 2024-07-09 华北理工大学 一种钢包出钢口封堵机构及其出钢口控流方法

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US2863189A (en) 1958-02-03 1958-12-09 Harold S Beck Ladle nozzle construction
US3651825A (en) 1969-10-24 1972-03-28 Francis P Sury Stopper plug valve for hot metal ladles
FR2427866A1 (fr) * 1978-06-05 1980-01-04 Eurdic Procede de fermeture et d'ouverture d'un orifice pour conteneurs metallurgiques et dispositif pour sa mise en oeuvre
FR2533473A1 (fr) * 1982-09-28 1984-03-30 Detalle Richard Mode de controle et d'ouverture des orifices de coulee des recipients conteneurs de metaux liquides et autres, et dispositif de mise en oeuvre
JPS59223156A (ja) * 1983-06-03 1984-12-14 Nippon Steel Corp 溶融金属容器の初期開孔方法
FR2627715B1 (fr) 1988-02-26 1991-10-11 Vesuvius Sa Busette de coulee pour ouverture assistee, dispositif l'incorporant et procede de mise en oeuvre
JPH0381054A (ja) * 1989-08-22 1991-04-05 Nkk Corp 取鍋内溶湯の注入方法
JPH05253666A (ja) * 1992-01-10 1993-10-05 Toshiba Ceramics Co Ltd スライドゲートの開孔方法
SE469969B (sv) * 1992-03-11 1993-10-18 Inst Foer Produktions Och Arbe Förfarande och anordning för att säkerställa öppning av en ventil till en skänk för smält metall
DE19620592A1 (de) * 1996-05-22 1997-11-27 Dislich Margrit Verfahren zum Ausgießen einer Stahlschmelze
JPH10109157A (ja) * 1996-10-01 1998-04-28 Kurosaki Refract Co Ltd 流量調整用ノズル孔の充填構造とその開孔方法

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Publication number Publication date
DE102014114301A1 (de) 2016-04-07
WO2016050847A1 (fr) 2016-04-07
EP3200941A1 (fr) 2017-08-09

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