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EP0859678B1 - Procede et dispositif pour l'obturation d'un trou de coulee - Google Patents

Procede et dispositif pour l'obturation d'un trou de coulee Download PDF

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Publication number
EP0859678B1
EP0859678B1 EP96938971A EP96938971A EP0859678B1 EP 0859678 B1 EP0859678 B1 EP 0859678B1 EP 96938971 A EP96938971 A EP 96938971A EP 96938971 A EP96938971 A EP 96938971A EP 0859678 B1 EP0859678 B1 EP 0859678B1
Authority
EP
European Patent Office
Prior art keywords
vessel
closing element
closing
base
melt
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
EP96938971A
Other languages
German (de)
English (en)
Other versions
EP0859678A1 (fr
Inventor
Reinhard Fuchs
Werner Hofmann
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP0859678A1 publication Critical patent/EP0859678A1/fr
Application granted granted Critical
Publication of EP0859678B1 publication Critical patent/EP0859678B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D41/14—Closures
    • B22D41/44—Consumable closure means, i.e. closure means being used only once
    • B22D41/46—Refractory plugging masses
    • 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

Definitions

  • the invention relates to a method for closing a in the bottom of a metallic melt filled vessel, especially for steel Tap opening, with a tubular closing element arranged in the furnace vessel, which is vertically movable to and from the entrance of the tap hole, and one shut-off device and a device arranged below the bottom of the vessel to carry out the procedure.
  • a closure device for a tap hole in Bottom of a metallurgical vessel known in which outside the vessel, in particular a metallic heating furnace, a shut-off device is provided in which a lower shut-off device can be moved from the outside against the tap opening.
  • a tube is arranged inside the vessel, which extends from a release position into the Locking position can be lowered and its mouth is against the edge of the Tap hole. In the lowered locking position, pourable filling material becomes brought through the tube into the tap hole.
  • the invention has set itself the goal of a method and a corresponding Device for the repeatable closing of a tap opening of a to create a metallurgical vessel with a long overall life safe shut-off even without tipping the Vessel is possible.
  • the invention achieves this goal by the characterizing features of Process claim 1 and device claim 6.
  • a compressible material is on the forehead of the closing element provided for closure when it comes into contact with the bottom of the vessel is compressed in the area of the tap hole.
  • This gas can come from a solid or liquid medium that is on the compressible material is brought and gasified under the influence of heat. It can be continuously supplied as a gas in a further advantageous embodiment or a gas is used, which during the residence time of the compressible material in the melt pool, experience has shown that it takes less than 30 seconds, expands when heated and displaces the melt as it expands, its total volume being sufficient for this process all the time maintain.
  • the overall process of closing is such that the im Upright furnace through the slag and liquid melt the tubular Closing element is guided until it touches the inner wall of the vessel bottom and seals them tightly to prevent the melt from flowing out. At that time it is Tap hole still open, so that the inside of the tubular element and melt or slag in the tap hole leaves the furnace vessel. Then the shut-off device arranged outside the vessel is turned on Slider or a flap, closed. There is now the possibility that Inspect tap hole. This can be done by direct inspection, however done by a camera or an endoscope. Furthermore, by the tubular closing element a tool with which the tap hole can be treated, for example by hitting bears or the like.
  • a device for example a goalie machine, through the tubular Closing element are brought into the tap hole, with which a repair of the Refractory material is carried out.
  • a free-flowing material is known in the tap hole brought. This serves to protect the shut-off device and to facilitate Pour on after opening the barrier.
  • the head of the closing element is used as Exchange part trained.
  • This exchange part is, if necessary, for one or exchanged several closing processes and with a new sealing lip, i.e. one Groove and the compressible refractory material.
  • This interchangeable part can have a wall thickness that is significantly larger than that of the remaining tubular closing element.
  • the walls of the groove have the task of the sealing material during the Protect driving through the melt. If the sealing material, for example, a mat or a molded part made of fibers, the bottom of the has reached the metallurgical vessel, the material of the walls of the groove is said Do not interfere with the compression of the sealing material.
  • a material is an option metallic material, which is designed as a compensator. Furthermore, a metallic material are used, which after passing through the melt, ie in about 15 to 30 seconds, at least softens, melts or chars. For example, one Cardboard are used, which has a sufficient service life and which Charred contact with the melt.
  • the Reason i.e. the forehead of the interchangeable part, have a conical surface leading to Center axis tapers to a point.
  • a corresponding shape of the bottom of the groove can be used with the result that the thickness of the later compressed sealing compound, ie the refractory fibers, is kept almost constant. In this way, one particularly high tightness safely achieved.
  • FIG. 1 shows a section through part of a metallurgical vessel 10 the metallic vessel jacket 11 and the refractory vessel lining 12.
  • Im Vessel bottom 13 is a tap opening 14 is provided, the mouth 16 through a Shut-off device 20 is closed, here by a flap 21.
  • the tap opening 14 has a refractory lining 17, which in the region of the Entrance 15 may have a conical bevel.
  • a tubular closing element 31 guided, on the end face 32 a groove 33 is provided.
  • Compressible material F is in the groove interior 34 brought in.
  • a detachable Connection 36 on the main body 39 attachable interchangeable part 37 is provided.
  • the inner diameter d i of the closing element 31 is equal to or larger than the diameter D i of the tap opening 14.
  • FIG. 2 shows a metal melt M on which slag S floats, filled metallurgical vessel 10, which is covered by a lid 19 by which the main body 39 of the closing element 31 can be guided.
  • the closing element 31 is held by a support arm 42 which is moved by a displacement drive 41 is vertically movable. Furthermore, the closing element 31 is by a rotary drive 43 rotatable about its main axis l.
  • a filling funnel 45 is located on the main body 39 of the closing element 31 applied to facilitate the flow of pourable material into the Tap opening 14. There is also a feed 44 for repair compounds, for example the Torkret Masse T.
  • the head 37 of the closing element 31 is designed as an interchangeable part.
  • the base 35 is chamfered, the walls 36 are guided axially parallel to the main axis l.
  • the Base area 35 On the left side of the picture is the Base area 35 the current state of the entry 15 of the refractory lining 17 reproduced the tap opening 14.
  • the walls 26 are also axially parallel to Main axis l guided.
  • the compressible material F is shown how it is deformed and one tight seal between the molten metal M and the tap opening 14 forms.
  • the mouth 16 of the tap opening 14 is through a Shut-off device 20, here can be closed by a slide 22.
  • the inside diameter d i of the closing element 31 is smaller than the inside diameter D i of the tap opening 14.
  • Figure 3 shows part of the closing element 31, namely the main body 39 and the interchangeable part 37 fastened via a detachable connection 38.
  • the groove 33 has one arranged at a right angle to the main axis 1
  • Base 35 on and has walls 36 which in the left side as Compensator is formed and in the right side made of cardboard, for example is constructed.
  • In the inner region 34 of the groove 33 is compressible material F intended.
  • a free space is left up to the mouth of the walls 36, in which gas that can accumulate from a liquid or solid medium H after Transition to the gas phase due to heat accumulates.
  • the base 35 of the walls 36 having groove 33 arranged obliquely.
  • this sloping base 35 In front of this sloping base 35 that is compressible material F introduced in the form of a molded part.
  • a gas through a bore through the main body 39 and the interchangeable part 37 G feedable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Combustion (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Drilling And Boring (AREA)
  • Air-Flow Control Members (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Claims (14)

  1. Procédé pour fermer une ouverture de coulée se trouvant dans le fond d'un récipient rempli d'une matière en fusion métallique, en particulier pour de l'acier, comportant un élément de fermeture tubulaire agencé dans le récipient de four, qui est déplaçable verticalement vers et de l'entrée du trou de coulée, et un dispositif d'obturation agencé au-dessous du fond du récipient,
    caractérisé par les étapes suivantes :
    a) avant chaque processus de fermeture, une matière réfractaire compressible est appliquée sur l'embouchure de l'élément de fermeture,
    b) directement avant la plongée dans la matière en fusion, il est prévu, dans la direction de fermeture avant la matière réfractaire, un agent qui empêche largement un contact de la matière réfractaire avec la matière en fusion,
    c) pendant le processus de fermeture, l'embouchure de l'élément de fermeture est guidée à travers la matière en fusion pour obturer le trou de coulée et est pressée contre le fond du récipient avec une force telle que la matière réfractaire est comprimée,
    d) ensuite, de façon connue, le dispositif d'obturation est amené à l'extérieur du récipient devant l'embouchure de coulée, et l'ouverture de coulée est remplie, par l'intermédiaire de l'élément de fermeture tubulaire, d'une masse réfractaire susceptible de couler.
  2. Procédé selon la revendication 1,
    caractérisé en ce que, après la mise en place de l'embouchure de l'élément de fermeture sur le fond du récipient interne, l'élément de fermeture est tourné autour de son axe central.
  3. Procédé selon la revendication 1,
    caractérisé en ce que l'agent est un gaz, par exemple de l'azote.
  4. Procédé selon la revendication 3,
    caractérisé en ce que le gaz, pendant la traversée de l'embouchure de l'élément de fermeture, est transporté à travers la matière en fusion.
  5. Procédé selon la revendication 1,
    caractérisé en ce que l'agent est constitué d'une matière liquide ou solide, laquelle, sous l'action de la chaleur lors de la plongée de l'élément de fermeture dans la matière en fusion, passe dans la phase gazeuse, et le gaz se place de plus de manière protectrice devant la matière réfractaire.
  6. Dispositif pour fermer une ouverture de coulée agencée dans le fond d'un récipient métallurgique, qui peut être fermée par la face externe du récipient par un dispositif d'obturation et peut être remplie par une masse réfractaire susceptible de couler, comportant un élément de fermeture tubulaire, qui peut s'appuyer sur la face interne du récipient sur le bord supérieur de l'ouverture de coulée et être déplacé dans une position de libération en libérant l'ouverture de coulée, pour la mise en oeuvre du procédé selon la revendication 1,
    caractérisé en ce que, sur le front (32) de l'élément de fermeture (31), il est prévu une rainure (33) en forme de fourche dont l'ouverture est orientée en direction du fond (13) du récipient, en ce que la zone interne (34), présentant la surface de fond (35), de la rainure (33) est remplie d'une matière compressible (F), en ce que la zone interne restante de la rainure peut être remplie de gaz (G), et en ce que les parois (36) de la rainure (33) sont constituées d'une matière qui n'oppose aucune résistance importante au pressage de l'élément de fermeture (31) contre le fond (13) du récipient.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que la matière des parois (36) est métallique et est réalisée comme compensateur.
  8. Dispositif selon la revendication 7,
    caractérisé en ce que les parois (36) présentent une épaisseur de paroi de 0,3 à 20,0 mm et la matière de paroi (36) est au moins ramollie sous l'action thermique de la matière en fusion (S).
  9. Dispositif selon une des revendications 6 à 8,
    caractérisé en ce que la tête (37) de l'élément de fermeture (31), y compris la pièce présentant la rainure (33), est réalisée comme pièce interchangeable et peut être reliée, par une liaison amovible (38), au corps principal (39) de l'élément de fermeture (31).
  10. Dispositif selon la revendication 9,
    caractérisé en ce que l'épaisseur de paroi de la pièce interchangeable (37) vaut de trois à dix fois l'épaisseur de paroi du corps principal (39) pour le même diamètre interne (di).
  11. Dispositif selon les revendications 9 ou 10,
    caractérisé en ce que le diamètre interne (di) de l'élément de fermeture (31), par rapport au diamètre (Di) de l'ouverture de coulée (14), est tel que di : Di = 0,7 à 2,0.
  12. Dispositif selon la revendication 6,
    caractérisé en ce que la matière compressible (F) est fabriquée en un matériau réfractaire, par exemple un matériau contenant du carbone, et est réalisée à partir de fibres comme natte ou comme pièce usinée.
  13. Dispositif selon une des revendications 6 à 12,
    caractérisé en ce que la surface de base (35) de la rainure (33) est inclinée de façon conique avec la pointe vers l'axe principal (I).
  14. Dispositif selon la revendication 13,
    caractérisé en ce que la surface de base (35) de la rainure (33) présente une forme qui correspond à l'entrée (15) de l'ouverture de coulée (14).
EP96938971A 1995-11-10 1996-11-04 Procede et dispositif pour l'obturation d'un trou de coulee Expired - Lifetime EP0859678B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19543058 1995-11-10
DE19543058A DE19543058C2 (de) 1995-11-10 1995-11-10 Verfahren und Vorrichtung zum Verschließen einer Abstichöffnung
PCT/DE1996/002133 WO1997018050A1 (fr) 1995-11-10 1996-11-04 Procede et dispositif pour l'obturation d'un trou de coulee

Publications (2)

Publication Number Publication Date
EP0859678A1 EP0859678A1 (fr) 1998-08-26
EP0859678B1 true EP0859678B1 (fr) 2000-07-12

Family

ID=7777810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96938971A Expired - Lifetime EP0859678B1 (fr) 1995-11-10 1996-11-04 Procede et dispositif pour l'obturation d'un trou de coulee

Country Status (18)

Country Link
US (1) US5914087A (fr)
EP (1) EP0859678B1 (fr)
KR (1) KR100299742B1 (fr)
CN (1) CN1076996C (fr)
AT (1) ATE194530T1 (fr)
AU (1) AU7620396A (fr)
BR (1) BR9611528A (fr)
CA (1) CA2237174C (fr)
DE (2) DE19543058C2 (fr)
DK (1) DK0859678T3 (fr)
ES (1) ES2147939T3 (fr)
GR (1) GR3034488T3 (fr)
MY (1) MY113630A (fr)
NO (1) NO981765L (fr)
RU (1) RU2160656C2 (fr)
TW (1) TW355186B (fr)
WO (1) WO1997018050A1 (fr)
ZA (1) ZA967940B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009579A1 (fr) 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Dispositif d’étanchéification et de remplissage d’un four métallurgique, four métallurgique et procédé de percée d’un four métallurgique

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826085C2 (de) * 1998-06-12 2000-08-03 Sms Demag Ag Verfahren und Vorrichtung zum Abdichten einer Abstichöffnung in metallurgischen Gefäßen
DE19835087A1 (de) * 1998-07-24 2000-01-27 Mannesmann Ag Verfahren und Einrichtung zum schlackefreien Abstechen
DE19923800C1 (de) * 1999-05-19 2001-03-22 Sms Demag Ag Verfahren und Vorrichtung zum Halten und Abstechen von Metallschmelzen
DE10009812A1 (de) * 2000-03-01 2001-09-06 Sms Demag Ag Anlage zur Herstellung von Stahl
KR100575730B1 (ko) 2003-08-19 2006-05-03 엘지전자 주식회사 이동 통신 단말기의 액세서리형 지피에스 수신장치
DE102009033934B3 (de) * 2009-07-20 2011-02-03 Fuchs Technology Holding Ag Abdicht- und Verfüllvorrichtung für einen metallurgischen Ofen, metallurgischer Ofen und Verfahren zum Abstechen eines metallurgischen Ofens
EP2461927A4 (fr) * 2009-08-09 2017-05-17 Rolls-Royce Corporation Système, procédé et appareil pour verser une matière de coulée dans un moulage à la cire perdue
US9920995B2 (en) 2014-10-31 2018-03-20 Aldo Longo Sand dispensing system and method of dispensing sand into a metal making furnace
IT201900025234A1 (it) * 2019-12-23 2020-03-23 More S R L Apparato per la produzione di metallo

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437810A1 (de) * 1984-10-16 1986-04-24 Kortec AG, Zug Verschlusseinrichtung fuer eine abstichoeffnung im boden eines metallurgischen gefaesses
FR2611151B1 (fr) * 1987-02-20 1991-06-14 Daussan & Co Dispositif de prechauffage et/ou d'obturation et de debouchage d'un orifice de coulee et procede pour sa mise en oeuvre
DE3826245A1 (de) * 1988-08-02 1990-02-08 Didier Werke Ag Schliess- und/oder regelorgan fuer den abstich fluessiger metallschmelze aus einem metallurgischen gefaess

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009579A1 (fr) 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Dispositif d’étanchéification et de remplissage d’un four métallurgique, four métallurgique et procédé de percée d’un four métallurgique

Also Published As

Publication number Publication date
EP0859678A1 (fr) 1998-08-26
KR19990064309A (ko) 1999-07-26
NO981765D0 (no) 1998-04-20
NO981765L (no) 1998-04-20
DE19543058C2 (de) 2001-01-04
CN1202123A (zh) 1998-12-16
ES2147939T3 (es) 2000-10-01
US5914087A (en) 1999-06-22
DE59605603D1 (de) 2000-08-17
DK0859678T3 (da) 2000-11-20
WO1997018050A1 (fr) 1997-05-22
ZA967940B (en) 1997-04-07
CA2237174C (fr) 2001-09-04
CN1076996C (zh) 2002-01-02
ATE194530T1 (de) 2000-07-15
AU7620396A (en) 1997-06-05
DE19543058A1 (de) 1998-07-16
RU2160656C2 (ru) 2000-12-20
MY113630A (en) 2002-04-30
CA2237174A1 (fr) 1997-05-22
BR9611528A (pt) 1999-07-13
GR3034488T3 (en) 2000-12-29
TW355186B (en) 1999-04-01
KR100299742B1 (ko) 2001-11-22

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