EP0328776B1 - Dispositif de fermeture et de réglage pour la coulée de métaux liquides - Google Patents

Dispositif de fermeture et de réglage pour la coulée de métaux liquides Download PDF

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Publication number
EP0328776B1
EP0328776B1 EP88121336A EP88121336A EP0328776B1 EP 0328776 B1 EP0328776 B1 EP 0328776B1 EP 88121336 A EP88121336 A EP 88121336A EP 88121336 A EP88121336 A EP 88121336A EP 0328776 B1 EP0328776 B1 EP 0328776B1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
control device
closure
vessel
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
EP88121336A
Other languages
German (de)
English (en)
Other versions
EP0328776A1 (fr
Inventor
Raimund Brückner
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Priority to AT88121336T priority Critical patent/ATE75431T1/de
Publication of EP0328776A1 publication Critical patent/EP0328776A1/fr
Application granted granted Critical
Publication of EP0328776B1 publication Critical patent/EP0328776B1/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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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 termination and control device for the casting of liquid molten metal contained in a metallurgical vessel, in particular in continuous casting close to the final dimensions, for example in strip casting, or in thin slab casting, the vessel having at least one elongated outlet.
  • a device for removing liquid glass from an oven which has a rotor with a slot-shaped opening, which is supported at both ends in bearing parts which consist of two assemble separate parts, the position of which relative to each other depends not only on their manufacturing tolerances, but also on their own installation position in the vessel wall receiving them.
  • DE-OS 35 08 218 describes a device for influencing the flow of metallurgical melt through spaces delimited by walls, in particular for Continuous casting known.
  • the flow of metallic melts to be adapted to the respective purpose is forced by adjusting the viscosity of the melt above the melt temperature by means of cooling and / or heating, the position of the location and the extent of the melt being dependent on the flow rate.
  • This device is said to be particularly advantageous in continuous casting when the liquid metal flow through narrow pipes or gaps, be it feed lines or sealing sections, has to be influenced.
  • An induction coil to be acted upon by high-frequency electrical currents is provided as the heater.
  • Such a device is relatively expensive both in construction and in operation and is not suitable for quickly opening and closing an outlet.
  • the molten metal is continuously fed under the metallostatic pressure of the storage container into a funnel of a crystallizer or a continuous casting mold provided at the entrance. It is therefore not possible to regulate the introduction of molten metal into the continuous casting mold, regardless of the metallostatic pressure of the storage container.
  • the object of the present invention is to propose a termination and control device for the casting of molten metal of the type mentioned at the outset, in which high casting accuracies can be achieved even with very thin strands with relatively little design effort.
  • the outlet is assigned a one-piece refractory stator and a refractory rotor arranged therein, which sealingly adjoin one another with circular cylindrical working surfaces and are provided with interacting openings for the melt passage extending in the axial direction, the rotor is rotatable and / or axially displaceable relative to the stator.
  • the one-piece stator can be produced in one piece or in several pieces, for example consisting of a plurality of pieces which are axially lined up, abutting one another on the end face and firmly connected to one another.
  • the breakthroughs can be made more or less congruent, at least by turning the rotor relative to the stator. In this way, an easily adjustable and high accuracy of the tape strand thickness can be achieved down to very low values. All that is required is a rotary drive for the rotor. Despite the tightness of the termination and control device, only low driving forces are required for this. The rotor and stator can also be easily replaced with new wear parts after wear.
  • the axially extending slot-shaped openings of the stator or of the rotor can each extend almost over the entire length of the respective closure body.
  • stator or rotor it is also possible for the stator or rotor to have a large number of radial openings distributed over its length at an axial distance, the openings being again slot-shaped, with the larger axis pointing in the longitudinal direction of the stator or rotor. If both the stator and the rotor are provided with such a large number of radial openings and in particular if the axial distance of these openings is greater than the diameter of the openings measured in the longitudinal direction of the stator or rotor, the shutoff or regulation of the molten metal flow can also be done by axially moving the rotor relative to the stator. It is useful to shut off the Metal melt flow by rotating the rotor relative to the stator.
  • the length or the distribution of the openings in the longitudinal direction of the stator or rotor preferably corresponds to the width of the strand to be cast, in particular the strip strand. In this way, no further means are required to bring the tape strand to the desired width.
  • the rotor and preferably also the stator are cylindrical.
  • the metal melt flow can also be compensated for by the longitudinal bore of the rotor.
  • the outer cross section of the stator can also be rectangular or square, while the rotor can be a solid cylinder except for the slot-shaped opening or the individual hole- or slot-shaped openings.
  • the breakthroughs are seen in the direction of flow, preferably of essentially constant width over their length.
  • the stator and rotor can be arranged on the outside of the vessel, but they are preferably arranged in the vessel and thus in the area of the molten metal, so that thermal wear on the wearing parts is as uniform as possible and the risk of freezing is as low as possible.
  • the stator and rotor can also be arranged on the bottom of the vessel or at the free end of the outlet.
  • stator and rotor are expediently part of the base and / or wall lining of the vessel.
  • stator and rotor are guided at least with one end through the side wall of the vessel and from there the rotor can be rotated and / or axially displaced relative to the stator.
  • the rotor and stator can in particular be guided at both ends through two mutually opposite side walls of the vessel.
  • the stator and rotor cross the vessel in the bottom area over its entire width.
  • the configuration can in particular be such that the rotor or parts of the rotor, if it consists of several identical individual pieces lined up axially, can be replaced by a new rotor or new rotor parts even when the vessel is filled.
  • the invention is also directed to a novel stator or rotor made of refractory material for a closure and control device of the type described above.
  • the stator or rotor are essentially characterized in that they have a slot-shaped opening for the melt passage which extends axially along their length, the inlet and / or outlet of which opens / opens into a circular cylindrical working surface, or that it has a plurality of over its Radial openings distributed in the axial distance, the inlets and / or outlets of which open into a circular cylindrical working surface.
  • the stator or the rotor can preferably be cylindrical in shape.
  • stator or rotor designed in this way are the same that have already been described in connection with the termination and control device for which they are intended.
  • the invention further proposes that the refractory material of the stator or rotor is relatively hard and wear-resistant, e.g. Contains or consists of oxide ceramics. This selection of materials is particularly suitable for the stator, since it is less necessary to replace it than the rotor.
  • the refractory material of the stator or rotor can also be relatively soft and wearable, e.g. contain or consist of ceramic fibers or ceramic fibers and fibers made of carbon or graphite. This selection of materials is particularly suitable for the rotor, which has to be replaced more frequently than the stator. The choice of materials ensures good tightness on the work surfaces between the stator and rotor.
  • the refractory material of the stator or rotor contains carbon, graphite or similar permanent lubricants at least in the surface area of the adjoining working surfaces.
  • the stator or rotor can thus consist, for example, of carbon or graphite, in particular electrode graphite.
  • stator or rotor made of carbon-containing refractory concrete.
  • the continuous casting device shown in FIG. 1 has a metallurgical vessel 1, from which the molten metal can be introduced through an outlet 2 into a continuous casting mold (not shown) or a crystallizer by means of a closing and regulating device 3 according to the invention, or a moving one, for example one Drum-formed surface can be fed.
  • the termination and control device 3 consists of two horizontal, concentrically arranged cylindrical tubes and with slot-shaped radial ones Breakthroughs 4 and 5 for the melt passage stator 6 and rotor 7 made of refractory material. Stator 6 and rotor 7 adjoin one another with circular cylindrical working surfaces 8 and 9.
  • the rotor 7 is rotatable about its longitudinal axis 10 relative to the stator 6 in such a way that both the outlets 11 and 12 and the inlets 16 and 17 of the slot-shaped openings 4 and 5 can be more or less covered.
  • the inner cylindrical tubular rotor 7 is rotatably mounted in the outer cylindrical tubular stator 6 and is shown in the fully open position.
  • the opening 4 of the fixed and on the outlet 2 outer stator 6 runs vertically, as does the opening 5 of the inner cylindrical rotor 7 in the open position.
  • the outlet 11 of the opening 4 of the stator 6 opens into the flow channel 18 of the outlet 2 arranged in the bottom of the vessel 1.
  • the upper region of the outlet 2 forms part of the bottom and wall lining 13 of the vessel 1.
  • the configuration according to FIG. 2 differs from that shown in FIG. 1 essentially in that the outer contour of the stator 6 of the termination and control device 3 is not cylindrical, but cuboid. With its lower section, the stator 6 forms part of the bottom and wall lining 13 of the vessel 1. In this case, the outlet 2 is attached to the bottom of the vessel. In this and in the other exemplary embodiments, stator 6 and outlet 2 can also form part.
  • the rotor 7 is not tubular in this case, but consists of a solid cylinder except for the slit-shaped opening 5.
  • the stator 6 is completely integrated into the base and wall lining 13 of the vessel 1. While in the exemplary embodiments according to FIGS. 1 and 2, the openings 4 and 5 have a substantially constant width over their length when viewed in the direction of flow, the two openings 4 and 5 in the embodiment according to FIG. 3 are each flared conically on the inlet side.
  • the inner surfaces of the openings 4 and 5, which come into contact with the molten metal, are formed from a layer of high-quality refractory material, while the remaining parts of the stator 6 and rotor 7 can be made of less resistant and therefore cheaper refractory material.
  • the closure bodies namely the stator 6 and the rotor 7, which are arranged concentrically one inside the other, are arranged in the transition area between the bottom and side walls of the vessel 1 and likewise form part of the bottom and wall lining 13.
  • the openings 4 and 5 are each angled in the direction of flow, wherein, in the open position of the rotor 7, the openings 4 and 5 run obliquely on the inlet side and vertically on the outlet side.
  • FIG. 5 illustrates how the closure and control device 3 according to the invention in its embodiment according to FIG. 2 can be arranged in the bottom region of the metallurgical vessel 1, the stator 6 and rotor 7 with their two ends as far as through the side walls 14 and 15 of the vessel 1 are passed through, so that, for example, the rotor 7 can be rotated or axially displaced from the outside relative to the fixed stator 6 by a drive (not shown) being arranged on the outside of one of the two side walls 14 or 15 of the vessel 1. In this case, it is also possible to replace the stator 6 and rotor 7 through the side walls 14 or 15.
  • FIGS. 6a and 6b which according to another embodiment of the invention each have a plurality of slot-shaped, radial openings 4, 5 distributed over their length at an axial distance, which through twisting or axial displacement of the rotor 7 in the stator 6 can be more or less congruent.
  • both the stator 6 and the rotor 7 can be composed of a plurality of individual pieces adjoining one another on the end face, which preferably engage in one another in a form-fitting manner and are firmly connected to one another, so that they find a secure hold in the closing and regulating device 3 and the multi-part rotor 7 by an external drive unit can be driven overall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Sliding Valves (AREA)
  • Induction Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Lift Valve (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (12)

  1. Dispositif de fermeture et de réglage pour la coulée de métal en fusion liquide contenu dans un récipient métallurgique, en particulier lors de la coulée en continu à des dimensions proches des dimensions finales, par exemple lors de la coulée en continu de bandes ou de la coulée de brames minces, le récipient (1) présentant au moins une sortie (2) allongée, caractérisé en ce qu'un stator réfractaire (6) d'une seule pièce et un rotor réfractaire (7) disposé dans ledit stator sont associés à la sortie (2), sont contigus avec effet d'étanchéité par des surfaces de travail (8, 9) cylindriques circulaires et sont munis de perçages (4, 5) pour le passage du métal en fusion qui s'étendent en direction axiale et coopèrent, le rotor (7) pouvant effectuer une rotation et/ou être déplacé axialement par rapport au stator (6).
  2. Dispositif de fermeture et de réglage selon la revendication 1, caractérisé en ce que le stator (6) et le rotor (7) présentent une pluralité de perçages (4, 5) répartis sur leur longueur en étant écartés axialement les uns des autres.
  3. Dispositif de fermeture et de réglage selon l'une des revendications 1 ou 2, caractérisé en ce que la longueur et la répartition des perçages (4, 5) correspond, vu dans la direction longitudinale du stator (6) et du rotor (7), à la largeur du produit à couler en continu, en particulier de la bande continue.
  4. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 3, caractérisé en ce que le stator (6) et/ou le rotor (7) sont/est réalisé(s) en forme de tube cylindrique.
  5. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 4, caractérisé en ce que les perçages (4, 5) ont une largeur essentiellement constante sur leur longueur, vu dans la direction d'écoulement.
  6. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 5, caractérisé en ce que les perçages (4, 5) sont coudés, vu dans la direction d'écoulement.
  7. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 6, caractérisé en ce que le stator (6) et le rotor (7) sont disposés dans le récipient (1), dans la zone du métal en fusion.
  8. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 6, caractérisé en ce que le stator (6) et le rotor (7) sont disposés sur le fond du récipient.
  9. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 6, caractérisé en ce que le stator (6) et le rotor (7) sont disposés à l'extrémité libre de la sortie (2).
  10. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 8, caractérisé en ce que le stator (6) et le rotor (7) font partie intégrante du revêtement latéral et/ou de fond (13) du récipient (1).
  11. Dispositif de fermeture et de réglage selon l'une des revendications 1 à 8, caractérisé en ce que le stator (6) et le rotor (7) sont amenés au moins avec l'une de leurs extrémités jusqu'à travers la paroi latérale (14, 15) du récipient (1) et en ce que le rotor (7) peut, à partir de là, effectuer une rotation et/ou être déplacé axialement par rapport au stator (6).
  12. Dispositif de fermeture et de réglage selon la revendication 11, caractérisé en ce que le rotor (7) ou des parties du rotor (7) peut (peuvent) être remplacé(es) en introduisant un nouveau rotor (7) ou de nouvelles pièces de rotor.
EP88121336A 1988-02-18 1988-12-21 Dispositif de fermeture et de réglage pour la coulée de métaux liquides Expired - Lifetime EP0328776B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88121336T ATE75431T1 (de) 1988-02-18 1988-12-21 Abschluss-und regeleinrichtung fuer das giessen fluessiger metallschmelze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805071A DE3805071A1 (de) 1988-02-18 1988-02-18 Abschluss- und regeleinrichtung fuer das giessen fluessiger metallschmelze
DE3805071 1988-02-18

Publications (2)

Publication Number Publication Date
EP0328776A1 EP0328776A1 (fr) 1989-08-23
EP0328776B1 true EP0328776B1 (fr) 1992-04-29

Family

ID=6347670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121336A Expired - Lifetime EP0328776B1 (fr) 1988-02-18 1988-12-21 Dispositif de fermeture et de réglage pour la coulée de métaux liquides

Country Status (13)

Country Link
US (2) US5121860A (fr)
EP (1) EP0328776B1 (fr)
JP (1) JPH01245949A (fr)
KR (1) KR960013882B1 (fr)
CN (1) CN1026562C (fr)
AT (1) ATE75431T1 (fr)
BR (1) BR8900662A (fr)
CA (1) CA1340559C (fr)
DE (2) DE3805071A1 (fr)
ES (1) ES2032525T3 (fr)
GR (1) GR3005007T3 (fr)
RU (1) RU1834746C (fr)
ZA (1) ZA89907B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809071A1 (de) * 1988-03-18 1989-09-28 Didier Werke Ag Dreh- und/oder schieberverschluss fuer einen ausguss eines metallschmelze enthaltenden gefaesses, sowie verschlussteile fuer einen solchen verschluss
US5156752A (en) * 1990-01-11 1992-10-20 Didier-Werke Ag Elongated stator and rotor members with elongated slots
DE4000656A1 (de) * 1990-01-11 1991-07-18 Didier Werke Ag Schliess- und/oder regelorgan
GB2249978B (en) * 1990-11-26 1994-08-24 Ishikawajima Harima Heavy Ind Tundish flow control
DE4319966A1 (de) * 1993-06-17 1994-12-22 Didier Werke Ag Eintauchausguß
DE4442336A1 (de) * 1994-11-29 1996-05-30 Didier Werke Ag Schließ- und/oder Regelorgan für ein metallurgisches Gefäß
RU2484923C1 (ru) * 2012-03-11 2013-06-20 Научно-производственное республиканское унитарное предприятие "НПО "Центр" Литейный ковш
USD815263S1 (en) * 2015-07-14 2018-04-10 Sussman Automatic Corporation Steamhead for steam generator
CN109967754A (zh) * 2019-05-09 2019-07-05 广东仁开科技有限公司 一种高温锡熔体的在线导流开闭系统
CN111230085B (zh) * 2020-03-31 2024-01-26 四川科匠轻金属材料科技有限公司 铝合金/镁合金用可变缝隙式浇包系统及制备方法

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AT165292B (fr) *
GB183241A (en) * 1921-04-19 1922-07-19 William Rowlands Improvements in or relating to teeming devices for ladles adapted to hold molten steel
US1742065A (en) * 1928-05-26 1929-12-31 George H J Eiser Ladle discharger
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DE2203987A1 (de) * 1972-01-28 1973-08-02 Diener Berthold Vorrichtung zum fuellen der hohlen rahmenschenkel von isolierglasscheiben mit granulat
DE2608472A1 (de) * 1976-02-27 1977-09-08 Mannesmann Ag Drehschieberverschluss fuer giesspfannen
AT357283B (de) * 1977-09-16 1980-06-25 Voest Alpine Ag Drehschieberverschluss fuer mit feuerfester auskleidung versehene gefaesse
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SU1072995A1 (ru) * 1982-08-25 1984-02-15 Алтайский Ордена Ленина Тракторный Завод Им.М.И.Калинина Поворотный конусный огнеупорный затвор
CH661456A5 (de) * 1983-01-11 1987-07-31 Stopinc Ag Drehverschluss fuer schmelzfluessige werkstoffe, insbesondere metall-schmelzen.
DE3306670C2 (de) * 1983-02-25 1986-10-30 Gerhard 6920 Sinsheim Bleickert Abstichvorrichtung für Abschmelz- und/oder Warmhalteöfen für NE-Metallschmelzen
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AU591889B2 (en) * 1985-03-26 1989-12-21 British Steel Plc Improvements in or relating to outlet valves for metal containing vessels
JPS62173057A (ja) * 1986-01-22 1987-07-29 Ishikawajima Harima Heavy Ind Co Ltd 双ロ−ル式連鋳機の湯面制御方法
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Also Published As

Publication number Publication date
DE3870606D1 (de) 1992-06-04
GR3005007T3 (fr) 1993-05-24
US5121860A (en) 1992-06-16
ZA89907B (en) 1989-10-25
US5127557A (en) 1992-07-07
CN1026562C (zh) 1994-11-16
JPH01245949A (ja) 1989-10-02
RU1834746C (ru) 1993-08-15
ATE75431T1 (de) 1992-05-15
EP0328776A1 (fr) 1989-08-23
KR890012724A (ko) 1989-09-19
CN1035456A (zh) 1989-09-13
DE3805071C2 (fr) 1991-07-04
ES2032525T3 (es) 1993-02-16
DE3805071A1 (de) 1989-08-31
CA1340559C (fr) 1999-05-25
KR960013882B1 (ko) 1996-10-10
BR8900662A (pt) 1989-10-10

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