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WO2014170103A1 - Système d'étanchéité de préférence dans une trappe coulissante sur le bec verseur d'un récipient métallurgique et carcasse de bec verseur - Google Patents

Système d'étanchéité de préférence dans une trappe coulissante sur le bec verseur d'un récipient métallurgique et carcasse de bec verseur Download PDF

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Publication number
WO2014170103A1
WO2014170103A1 PCT/EP2014/056021 EP2014056021W WO2014170103A1 WO 2014170103 A1 WO2014170103 A1 WO 2014170103A1 EP 2014056021 W EP2014056021 W EP 2014056021W WO 2014170103 A1 WO2014170103 A1 WO 2014170103A1
Authority
WO
WIPO (PCT)
Prior art keywords
spout
casing
spout casing
sealing ring
casting tube
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.)
Ceased
Application number
PCT/EP2014/056021
Other languages
English (en)
Inventor
Alan DICK
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.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
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 Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Publication of WO2014170103A1 publication Critical patent/WO2014170103A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B22D41/502—Connection arrangements; Sealing means therefor

Definitions

  • a sealing system preferably in a slide gate on the spout of a metallurgical vessel and a spout casing
  • the invention relates to a sealing system according to the preamble of Claim 1 , and to a refractory spout casing.
  • This type of arrangement is used, for example, for the casting of steel by the continuous casting method.
  • the spout forms the outlet of a slide gate of a metallurgical vessel here.
  • the casting tube connected to said spout in an air-tight manner conveys the molten steel into a die suitable for the purpose.
  • the sealing system between the spout casing and the casting tube serves to prevent ambient air from being sucked into the molten steel through their connection seat when casting.
  • inert gas is supplied to the region of the connection seat, and the gas pressure of said inert gas counters the suction effect of the molten steel flowing through when casting.
  • This type of sealing system is disclosed by DE 40 24 520 A1.
  • a disadvantage of the latter is that the supply of the sealing system with inert gas is structurally complex and in addition is expensive, both due to the quantities of gas required and due to the gas pressure required.
  • the object underlying the invention is to avoid these disadvantages and to provide a sealing system of the type specified at the start that is characterised by a constructionally simple structure and perfect tightness of the system.
  • the spout casing has a sealing ring that can be pressed in an air-tight manner against the seal of the casting tube on the face side.
  • the sealing ring brings about air-tight blocking of the sealing seat, especially as the negative pressure that occurs during casting automatically supports the pressing of the sealing ring against the seal of the casting tube.
  • the sealing system is structurally very simple and is reliable in operation to a high degree.
  • a sheet metal ring preferably produced from sheet steel is used as a sealing ring, the radial width of which is matched to that of the seal of the casting tube.
  • the invention makes provision such that the sealing ring is positioned at a defined height of the spout casing which is calculated such that it guarantees total coverage of the seat surfaces of the casting tube and the spout casing in the assembled state.
  • the seal of the casting tube is produced from fibrous ceramic material in the form of a conically moulded sealing casing which is provided with a face-side collar for enlarging the pressing surface of the sealing ring.
  • the sealing system according to the invention can also be used in devices the casting tube of which is provided with an inert gas feed opening out into the region of its seal.
  • a spout casing particularly suitable for the sealing system is characterised in that it is provided with a one- or multiple-part sheet metal jacket to which holders for the sealing ring are applied arranged distributed around the perimeter. Since it is in any case normal to use spout casings covered in sheet metal, the holders are preferably welded directly onto the existing sheet metal jacket in the form of sheet metal straps.
  • the sealing ring is fastened to the sheet metal straps with detachable connection means which can be screwed into the sheet metal straps or are driven into bore holes in the sheet metal straps as bolts or pins.
  • Fig. 1 a longitudinal section of a partially shown slide gate comprising a sealing system according to the invention with a spout casing and a casting tube;
  • Fig. 2 a detail A of the spout casing in a view in the direction of the arrow B according to Fig. 2;
  • Fig. 3 a partial longitudinal section of the spout casing according to
  • Fig. 4 a top view of a sealing ring for the spout casing according to
  • Fig. 5 a section of the sealing ring according to Fig. 4.
  • the slide gate 20 shown in Fig. 1 on the spout of a metallurgical vessel which can be, for example, a ladle filled with molten steel, comprises a housing 21 that can be fastened to the vessel and a slide unit 22 into which at least one refractory closure plate 23, 24 can respectively be inserted by means of the indicated centring elements 26.
  • a metallurgical vessel not detailed
  • a slide unit 22 into which at least one refractory closure plate 23, 24 can respectively be inserted by means of the indicated centring elements 26.
  • a refractory casing 27 shown partially projecting into the vessel and adjoining beneath the closure plate 24 in the slide unit is a refractory spout casing 1 which is held in the slide unit 22 by means of a detachable fastening element 25 which can be, for example, a bayonet ring.
  • a detachable fastening element 25 which can be, for example, a bayonet ring.
  • the spout casing 1 could also be connected to the closure plate 24 as one unit.
  • the spout casing 1 is formed tapering downwards conically on the outside and has in the upper part a collar V which serves as a contact surface in the bayonet ring.
  • a refractory casting tube 3 which is also called a ladle shroud and generally plunges into the molten steel of a distributor vessel located beneath the slide gate so that the molten steel poured in a controlled manner into the latter from the vessel is protected from the ambient air.
  • This casting tube 3 is provided with an upper end 4 extending conically on the inside, and like the spout casing 1 , is provided with a through boring 5a or 5b.
  • the spout casing 1 is covered by a one- or multiple-part sheet metal jacket 6 the conical part 7 of which is pressed against a casing-like seal 8 preferably produced from a fibrous ceramic material with a collar 9 lying on the face side of the casting tube 3' at the top.
  • This seal 8 is inserted, accurately fitting, into the casting tube 3.
  • the sealing seat formed by the sheet metal jacket 6 of the spout casing 1 and that formed by the seal 8 is additionally sealed with a sealing ring 1 1.
  • This sealing ring 1 1 advantageously produced from sheet steel is positioned in a holder 12 of the sheet metal jacket 6 and is pressed against the collar 9 of the seal 8 of the casting tube. It thus provides together with the seal 8 double sealing of the formed sealing seat.
  • the holder 12 and the fastening means for the sealing ring 1 1 are illustrated in Fig. 2 to Fig. 5.
  • the holder 12 is formed by a number of, for example three, straps 14 made of sheet steel arranged distributed around the perimeter, which are welded onto the sheet metal jacket 6 on the inside.
  • the straps 14 have receiving bore holes 15 for the fastening means of the sealing ring.
  • these straps 14 are dimensioned such that they form together with the spout casing 1 an outside diameter D1 which has dimensions equal to or smaller than the inside diameter 25' of the bayonet ring 25 and so the spout casing 1 can be inserted into the bayonet ring 25.
  • holding bolts or pins 16 are provided as fastening means. These are welded into the sealing ring 11 and passed into the receiving bore holes 15 of the straps 14 so that they position the sealing ring 1 1 in the fitting position suitable for even pressing.
  • the pressing force is primarily applied by the pressed on casting tube 3, but during casting it is increased according to the invention by a pressure difference P1 minus P2 then being produced between the pressure P1 of the surrounding area and pressure P2 in the interior of the passage opening 5b which supports the pressing of the sealing ring 11 against the seal 8 of the casting tube when pouring off molten metal.
  • the sealing system according to the invention is structurally simple, reliable and financially advantageous, in particular with regard to the otherwise high operating costs associated with the consumption of the expensive inert gas.
  • the sealing ring 11 in the holders 14 it is also possible, in order to fasten the sealing ring 11 in the holders 14, to use instead of the holding pins 16 connection elements which can be screwed into the bore holes 15 of the holders 14. Both fastening possibilities make it possible to fit the sealing ring 1 1 in the spout casing 1 when the latter is already fitted in the metallurgical vessel or the slide gate 20 fastened to the latter.
  • the arrangement of the holders 14 in the spout casing 1 defines the installation height of the sealing ring. In practice this is chosen such that it guarantees full coverage of its seat surfaces according to the dimensions of the spout casing and the casting tube.
  • the sealing system according to the invention can also be used in conventional devices with an inert gas supply.
  • the gas supply is restricted to a minimum or optionally it is totally stopped.
  • the invention could also be demonstrated by other configurations.
  • the sealing ring 1 could be formed like a frame in order to increase stability, instead of these straps 14 a ring or similar surrounding the spout casing 1 could also be provided.
  • the sealing ring 11 could also only strike the holder 12 for the purpose of positioning, but not be fastened to the latter.
  • Those sealing system according to the invention could also be applied for other devices respective closure systems on the spout of metallurgical vessels, like for instance for a stopper rod, a tundish slide gate, a metering nozzle, a nozzle change system or the like.
  • the casting tube could be used as a submerged nozzle, which would for instance be submergeab!e into the molten metal in a casting mould.

Landscapes

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

Abstract

La présente invention se rapporte à un système d'étanchéité de préférence dans une trappe coulissante sur le bec verseur d'un récipient métallurgique au moyen duquel une carcasse de bec verseur (1) peut être raccordée à un tube de coulée de réfractaire (3). La carcasse de bec verseur (1) fait saillie dans le tube de coulée (3) et, entre ces derniers, il y a un joint d'étanchéité (8) de la forme de la carcasse, un collier (9) se trouvant sur le côté face du tube de coulée (3') au niveau de la partie supérieure. La carcasse de bec verseur (1) comporte sur la partie extérieure au moins une bague d'étanchéité (11) qui est positionnée de telle sorte qu'elle puisse être pressée contre le collier (9) du joint d'étanchéité (8) se trouvant sur le côté face du tube de coulée (3') au niveau de la partie supérieure. Ce système d'étanchéité présente une structure simple en termes de construction et une étanchéité parfaite entre la carcasse de bec verseur (1) et le tube de coulée (3).
PCT/EP2014/056021 2013-04-16 2014-03-26 Système d'étanchéité de préférence dans une trappe coulissante sur le bec verseur d'un récipient métallurgique et carcasse de bec verseur Ceased WO2014170103A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13163984.1A EP2792433A1 (fr) 2013-04-16 2013-04-16 Système d'étanchéité de préférence dans une grille coulissante sur le bec d'un récipient métallurgique et logement de bec
EP13163984.1 2013-04-16

Publications (1)

Publication Number Publication Date
WO2014170103A1 true WO2014170103A1 (fr) 2014-10-23

Family

ID=48139781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/056021 Ceased WO2014170103A1 (fr) 2013-04-16 2014-03-26 Système d'étanchéité de préférence dans une trappe coulissante sur le bec verseur d'un récipient métallurgique et carcasse de bec verseur

Country Status (2)

Country Link
EP (1) EP2792433A1 (fr)
WO (1) WO2014170103A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11638954B2 (en) 2017-11-10 2023-05-02 Vesuvius Group, S.A. Bottom plate assembly comprising a bayonet free collector nozzle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2878861A1 (fr) * 2013-11-28 2015-06-03 Refractory Intellectual Property GmbH & Co. KG Ensemble de joint d'étanchéité entre deux manchons réfractaires sur le bec d'un récipient métallurgique
MX2019001655A (es) * 2016-08-09 2019-06-10 Ak Steel Properties Inc Embudo de artesa.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109550A (en) * 1979-01-31 1980-08-23 Shinagawa Refract Co Ltd Refractory structure which sandwiches refractory packing
JPS6240959A (ja) * 1985-08-16 1987-02-21 Akechi Ceramics Kk 連続鋳造用ノズル接合部のシ−ル体
DE4024520A1 (de) 1990-08-02 1992-02-06 Didier Werke Ag Verbindung zwischen dem auslauf eines metallurgischen gefaesses und einem schutzrohr oder eintauchausguss
JPH06106309A (ja) * 1992-09-22 1994-04-19 Kurosaki Refract Co Ltd 鋳造用ノズルの接続構造
EP0630712A1 (fr) * 1993-06-23 1994-12-28 Didier-Werke Ag Busette de coulée immergée
EP0759415A1 (fr) * 1993-10-15 1997-02-26 Shinagawa Refractories Co., Ltd. Enveloppe de materiau refractaire
KR20030038947A (ko) * 2001-11-09 2003-05-17 조선내화 주식회사 연속주조용 하부노즐과 침지노즐 사이에 설치되는 씰링재
WO2006015460A1 (fr) * 2004-08-11 2006-02-16 Vesuvius Crucible Company Ensemble constitue d’une buse verseuse et d’une buse collectrice
KR20110108949A (ko) * 2010-03-30 2011-10-06 현대제철 주식회사 침지 노즐 조립체 제작용 모르타르 및 그를 이용한 침지 노즐 조립체 제작 방법
US20130008623A1 (en) * 2010-03-19 2013-01-10 Vesuvius Group S.A. Device for holding and replacing a casting plate in a casting installation, metallic casing of casting plate, provided with means interacting with a device detector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109550A (en) * 1979-01-31 1980-08-23 Shinagawa Refract Co Ltd Refractory structure which sandwiches refractory packing
JPS6240959A (ja) * 1985-08-16 1987-02-21 Akechi Ceramics Kk 連続鋳造用ノズル接合部のシ−ル体
DE4024520A1 (de) 1990-08-02 1992-02-06 Didier Werke Ag Verbindung zwischen dem auslauf eines metallurgischen gefaesses und einem schutzrohr oder eintauchausguss
JPH06106309A (ja) * 1992-09-22 1994-04-19 Kurosaki Refract Co Ltd 鋳造用ノズルの接続構造
EP0630712A1 (fr) * 1993-06-23 1994-12-28 Didier-Werke Ag Busette de coulée immergée
EP0759415A1 (fr) * 1993-10-15 1997-02-26 Shinagawa Refractories Co., Ltd. Enveloppe de materiau refractaire
KR20030038947A (ko) * 2001-11-09 2003-05-17 조선내화 주식회사 연속주조용 하부노즐과 침지노즐 사이에 설치되는 씰링재
WO2006015460A1 (fr) * 2004-08-11 2006-02-16 Vesuvius Crucible Company Ensemble constitue d’une buse verseuse et d’une buse collectrice
US20130008623A1 (en) * 2010-03-19 2013-01-10 Vesuvius Group S.A. Device for holding and replacing a casting plate in a casting installation, metallic casing of casting plate, provided with means interacting with a device detector
KR20110108949A (ko) * 2010-03-30 2011-10-06 현대제철 주식회사 침지 노즐 조립체 제작용 모르타르 및 그를 이용한 침지 노즐 조립체 제작 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11638954B2 (en) 2017-11-10 2023-05-02 Vesuvius Group, S.A. Bottom plate assembly comprising a bayonet free collector nozzle

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