EP0413100B1 - Closing and controlling device for a metallurgical vessel - Google Patents

Closing and controlling device for a metallurgical vessel Download PDF

Info

Publication number
EP0413100B1
EP0413100B1 EP90110930A EP90110930A EP0413100B1 EP 0413100 B1 EP0413100 B1 EP 0413100B1 EP 90110930 A EP90110930 A EP 90110930A EP 90110930 A EP90110930 A EP 90110930A EP 0413100 B1 EP0413100 B1 EP 0413100B1
Authority
EP
European Patent Office
Prior art keywords
inner tube
outer tube
closure
opening
inner pipe
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
EP90110930A
Other languages
German (de)
French (fr)
Other versions
EP0413100A2 (en
EP0413100A3 (en
Inventor
Ullrich Hintzen
Ernst Lührsen
Andreas Schuler
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
Publication of EP0413100A2 publication Critical patent/EP0413100A2/en
Publication of EP0413100A3 publication Critical patent/EP0413100A3/en
Application granted granted Critical
Publication of EP0413100B1 publication Critical patent/EP0413100B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a closing and regulating element for tapping liquid molten metal from a metallurgical vessel with a stationary inner tube which is arranged on the bottom of the vessel and has at least one opening above the bottom, and with an outer tube which has an at its lower end has circumferential end edge around the circumference of the inner tube and which is displaceable relative to the inner tube in the longitudinal axis direction by a closing stroke into a closed position from an open position in which the opening of the inner tube coincides with an opening in the outer tube.
  • Such a locking and control element is described in DE 35 40 202 C1.
  • the outer tube can be rotated to regulate the melt outlet and can be moved in the longitudinal direction.
  • the openings in the inner tube are covered by a corresponding rotation or displacement of the outer tube, so that no melt escapes in this closed position.
  • the outer tube according to DE 35 40 202 C1 is displaced by its maximum closing stroke in the longitudinal axis direction, then there is a distance between its lower end edge and the bottom of the vessel. In this area, the inner tube is exposed to the melt. Any cracks present there are not covered by the outer tube, so that melt breakthrough is not excluded there. In addition, with a maximum displacement in the closed position, the outer tube strikes the upper end edge of the inner tube lying in it. The inner tube is thereby mechanically loaded, which increases the formation of cracks and thus the risk of the melt breaking through. Overall, the closing and regulating device of DE 35 40 202 C1 therefore does not have sufficient emergency closing properties.
  • the object of the invention is to propose a closing and regulating element of the type mentioned at the outset which has the necessary emergency closing properties.
  • the above object is achieved in a closing and regulating element of the type mentioned at the outset in that the possible closing stroke is so large that the outer tube is in Is displaceable in the longitudinal direction in a further closed position, and that in the further closed position the opening of the inner tube is also covered by the outer tube and the front edge of the lower end of the outer tube sits sealingly on an annular surface which extends around the inner tube.
  • the outer tube is moved as in the prior art.
  • the outer tube is quickly moved in the longitudinal axis direction until it hits the end face of the ring surface. It does not hit the top of the inner tube. By seating the front edge of the outer tube on the ring surface, an additional sealing zone is formed.
  • the annular surface lies in the plane of the bottom of the vessel. This ensures that the portion of the inner tube projecting into the vessel is surrounded by the outer tube during the emergency closure and is thus covered against the melt.
  • the annular surface is preferably formed by the bottom of the vessel itself. However, it is also possible to design the ring surface as an external step of the inner tube.
  • a closing and control element (1) consists of an inner tube (2) and an outer tube (3). Both are made of ceramic, fireproof material.
  • the inner tube (2) is mortared in an airtight and meltproof manner in a base (4) of a metallurgical vessel.
  • the longitudinal axis of the inner tube (2) is perpendicular to the floor (4).
  • the inner tube (2) is provided with openings (5) above the base (4).
  • the inner tube (2) is closed at its upper end (6).
  • the outer tube (3) is pushed onto the inner tube (2) and can be rotated about the longitudinal axis and displaceable in the longitudinal axis direction.
  • the outer tube (3) is provided with openings (7) corresponding to the openings (5). Below the openings (7), the outer tube (3) has an end edge (8) running around the inner tube (2).
  • the end (6) of the inner tube (2) is closed like a dome.
  • the outer tube (3) is provided with a curvature (9) corresponding to the domed end (6).
  • annular surface (10) is formed from the bottom (4) in the vicinity of the inner tube (2).
  • the annular surface (10) is formed by a step (11) of the inner tube (2).
  • the ring surface (10) is also in the plane of the bottom (4).
  • the dimensioning of the inner tube (2) in the area of the openings (5) is weaker than that of the outer tube (3).
  • the dimensioning of the inner tube (2) below the step (11) is stronger than above the step (11).
  • the closing and regulating element (1) is shown in the open position, in which the openings (5) in the inner tube (2) are aligned with the openings (7) in the outer tube (3). Melt flows out of the vessel through the openings (5, 7) from the inner tube (2) downwards. The melt flow can be varied by rotating or moving the outer tube (3).
  • the outer tube (3) is moved in the direction of the arrow (N) until its front edge (8) hits the ring surface (10). This position is shown in dashed lines in Figures 1 and 2.
  • the outer tube (3) covers the openings (5) of the inner tube (2) and encloses the inner tube (2) over its entire length standing inside the vessel. This ensures that melt can no longer escape, even if there are breaks or gaps in the inner tube (2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Lift Valve (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A refractory shutoff assembly for controlling the discharge of molten metal from a metallurgical vessel includes a refractory inner pipe to be fixedly mounted in a bottom of the vessel, such inner pipe having therethrough at least one opening at a position to be above the vessel bottom. A refractory outer pipe is mounted about the inner pipe and has therethrough at least one opening. The outer pipe has a lower end with an annular end surface. The outer pipe is movable relative to the inner pipe axially thereof between an open position, whereat the opening in the outer pipe aligns with the opening in the inner pipe, and a closed position, whereat such openings are isolated to block molten metal discharge. The length of possible axial movement of the outer pipe relative to the inner pipe from the open position is sufficient to enable movement of the outer pipe to another closed position, whereat the openings are isolated from each other and whereat the annular end surface sealingly abuts on an annular surface extending around the inner pipe, thereby entirely enclosing the inner pipe.

Description

Die Erfindung betrifft ein Schließ- und Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäß mit einem ortsfesten Innenrohr, das an dem Boden des Gefäßes angeordnet ist und oberhalb des Bodens wenigstens eine Durchbrechung aufweist, und mit einem Außenrohr, das an seinem unteren Ende eine um den Umfang des Innenrohrs umlaufende Stirnkante aufweist und das aus einer Öffnungsstellung, in der sich die Durchbrechung des Innenrohrs mit einer Durchbrechung des Außenrohrs deckt, relativ zum Innenrohr in Längsachsrichtung um einen Schließhub in eine Schließstellung verschieblich ist.The invention relates to a closing and regulating element for tapping liquid molten metal from a metallurgical vessel with a stationary inner tube which is arranged on the bottom of the vessel and has at least one opening above the bottom, and with an outer tube which has an at its lower end has circumferential end edge around the circumference of the inner tube and which is displaceable relative to the inner tube in the longitudinal axis direction by a closing stroke into a closed position from an open position in which the opening of the inner tube coincides with an opening in the outer tube.

Ein derartiges Schließ- und Regelorgan ist in der DE 35 40 202 C1 beschrieben. Das Außenrohr ist zum Regeln des Schmelzenaustritts drehbar und in Längsrichtung verschiebbar. Durch eine entsprechende Drehung oder Verschiebung des Außenrohrs werden die Durchbrechungen des Innenrohrs verdeckt, so daß in dieser Schließstellung kein Schmelzenaustritt erfolgt.Such a locking and control element is described in DE 35 40 202 C1. The outer tube can be rotated to regulate the melt outlet and can be moved in the longitudinal direction. The openings in the inner tube are covered by a corresponding rotation or displacement of the outer tube, so that no melt escapes in this closed position.

Ist das Außenrohr nach der DE 35 40 202 C1 um seinen maximalen Schließhub in Längsachsrichtung verschoben, dann besteht zwischen seiner unteren Stirnkante und dem Boden des Gefäßes ein Abstand. In diesem Bereich liegt das Innenrohr gegenüber der Schmelze frei. Etwa dort vorhandene Risse sind also nicht durch das Außenrohr abgedeckt, so daß dort ein Schmelzendurchbruch nicht ausgeschlossen ist. Außerdem trifft das Außenrohr bei einer maximalen Verschiebung in Schließstellung auf die in ihm liegende obere Stirnkante des Innenrohrs auf. Das Innenrohr wird dadurch mechanisch belastet, was die Rißbildung und damit die Gefahr eines Durchbruchs der Schmelze erhöht. Insgesamt weist das Schließ- und Regelorgan der DE 35 40 202 C1 somit keine hinreichenden Notschlußeigenschaften auf.If the outer tube according to DE 35 40 202 C1 is displaced by its maximum closing stroke in the longitudinal axis direction, then there is a distance between its lower end edge and the bottom of the vessel. In this area, the inner tube is exposed to the melt. Any cracks present there are not covered by the outer tube, so that melt breakthrough is not excluded there. In addition, with a maximum displacement in the closed position, the outer tube strikes the upper end edge of the inner tube lying in it. The inner tube is thereby mechanically loaded, which increases the formation of cracks and thus the risk of the melt breaking through. Overall, the closing and regulating device of DE 35 40 202 C1 therefore does not have sufficient emergency closing properties.

Aufgabe der Erfindung ist es, ein Schließ- und Regelorgan der eingangs genannten Art vorzuschlagen, das nötige Notschlußeigenschaften aufweist.The object of the invention is to propose a closing and regulating element of the type mentioned at the outset which has the necessary emergency closing properties.

Erfindungsgemäß ist obige Aufgabe bei einem Schließ- und Regelorgan der eingangs genannten Art dadurch gelöst, daß der mögliche Schließhub so groß ist, daß das Außenrohr in Längsrichtung in eine weitere Schließstellung verschieblich ist, und daß in der weiteren Schließstellung die Durchbrechung des Innenrohrs vom Außenrohr auch abgedeckt ist und die Stirnkante des unteren Endes des Außenrohrs auf einer Ringfläche dichtend aufsitzt, die sich um das Innenrohr erstreckt. Im Regelbetrieb wird das Außenrohr wie beim Stand der Technik bewegt.According to the invention, the above object is achieved in a closing and regulating element of the type mentioned at the outset in that the possible closing stroke is so large that the outer tube is in Is displaceable in the longitudinal direction in a further closed position, and that in the further closed position the opening of the inner tube is also covered by the outer tube and the front edge of the lower end of the outer tube sits sealingly on an annular surface which extends around the inner tube. In regular operation, the outer tube is moved as in the prior art.

Falls zur Verhinderung eines Schmelzendurchbruchs ein Notschluß notwendig ist, wird das Außenrohr schnell in Längsachsrichtung verschoben, bis es mit seiner Stirnkante auf der Ringfläche auftrifft. Es schlägt dabei nicht auf dem oberen Rand des Innenrohrs auf. Durch das Aufsitzen der Stirnkante des Außenrohrs auf der Ringfläche ist eine zusätzliche Dichtzone gebildet.If an emergency closure is necessary to prevent melt breakthrough, the outer tube is quickly moved in the longitudinal axis direction until it hits the end face of the ring surface. It does not hit the top of the inner tube. By seating the front edge of the outer tube on the ring surface, an additional sealing zone is formed.

In bevorzugter Ausgestaltung der Erfindung liegt die Ringfläche in der Ebene des Bodens des Gefäßes. Dadurch ist gewährleistet, daß beim Notschluß der in das Gefäß ragende Abschnitt des Innenrohrs von dem Außenrohr umgeben und damit gegen die Schmelze abgedeckt ist.In a preferred embodiment of the invention, the annular surface lies in the plane of the bottom of the vessel. This ensures that the portion of the inner tube projecting into the vessel is surrounded by the outer tube during the emergency closure and is thus covered against the melt.

Vorzugsweise ist die Ringfläche vom Boden des Gefäßes selbst gebildet. Es ist jedoch auch möglich, die Ringfläche als außenliegende Stufe des Innenrohrs zu gestalten.The annular surface is preferably formed by the bottom of the vessel itself. However, it is also possible to design the ring surface as an external step of the inner tube.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung von Ausführungsbeispielen.Further advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments.

In der Zeichnung zeigen:

  • Figur 1 ein Schließ- und Regelorgan im Schnitt und
  • Figur 2 eine weitere Ausführung des Schließ- und Regelorgans.
The drawing shows:
  • Figure 1 is a closing and control element in section and
  • Figure 2 shows another embodiment of the closing and control element.

Ein Schließ- und Regelorgan (1) besteht aus einem Innenrohr (2) und einem Außenrohr (3). Beide sind aus keramischem, feuerfestem Material gefertigt. Das Innenrohr (2) ist in einen Boden (4) eines metallurgischen Gefäßes luft- und schmelzedicht eingemörtelt. Die Längsachse des Innenrohrs (2) steht senkrecht zum Boden (4). Oberhalb des Bodens (4) ist das Innenrohr (2) mit Durchbrechungen (5) versehen. An seinem oberen Ende (6) ist das Innenrohr (2) geschlossen.A closing and control element (1) consists of an inner tube (2) and an outer tube (3). Both are made of ceramic, fireproof material. The inner tube (2) is mortared in an airtight and meltproof manner in a base (4) of a metallurgical vessel. The longitudinal axis of the inner tube (2) is perpendicular to the floor (4). The inner tube (2) is provided with openings (5) above the base (4). The inner tube (2) is closed at its upper end (6).

Das Außenrohr (3) ist auf das Innenrohr (2) geschoben und relativ zu diesem um die Längsachse drehbar und in Längsachsrichtung verschieblich. Das Außenrohr (3) ist mit den Durchbrechungen (5) entsprechenden Durchbrechungen (7) versehen. Unterhalb der Durchbrechungen (7) weist das Außenrohr (3) eine um das Innenrohr (2) umlaufende Stirnkante (8) auf.The outer tube (3) is pushed onto the inner tube (2) and can be rotated about the longitudinal axis and displaceable in the longitudinal axis direction. The outer tube (3) is provided with openings (7) corresponding to the openings (5). Below the openings (7), the outer tube (3) has an end edge (8) running around the inner tube (2).

Beim Ausführungsbeispiel nach Figur 1 ist das Ende (6) des Innenrohrs (2) kuppelartig geschlossen. Im Innern ist das Außenrohr (3) mit einer dem kuppelartig gewölbten Ende (6) entsprechenden Wölbung (9) versehen.In the embodiment of Figure 1, the end (6) of the inner tube (2) is closed like a dome. Inside, the outer tube (3) is provided with a curvature (9) corresponding to the domed end (6).

Durch die stabilere Dimensionierung des Außenrohrs (3) ist es mit Hilfe der Wölbung (9) möglich, das Innenrohr (2) mit der Notschlußbewegung zusammenzudrücken, so daß durch die teilweise Zerstörung des Innenrohrs (2) eine zusätzliche Versperrung des Gießkanals erfolgt.Due to the more stable dimensioning of the outer tube (3), it is possible with the aid of the curvature (9) to compress the inner tube (2) with the emergency closing movement, so that the partial destruction of the inner tube (2) results in an additional blockage of the pouring channel.

Beim Ausführungsbeispiel nach Figur 1 ist vom Boden (4) in der Umgebung des Innenrohrs (2) eine Ringfläche (10) gebildet.In the exemplary embodiment according to FIG. 1, an annular surface (10) is formed from the bottom (4) in the vicinity of the inner tube (2).

Beim Ausführungsbeispiel nach Figur 2 ist die Ringfläche (10) von einer Stufe (11) des Innenrohrs (2) gebildet. Die Ringfläche (10) liegt auch hier in der Ebene des Bodens (4).In the embodiment of Figure 2, the annular surface (10) is formed by a step (11) of the inner tube (2). The ring surface (10) is also in the plane of the bottom (4).

Die Dimensionierung des Innenrohrs (2) im Bereich der Durchbrechungen (5) ist schwächer als die des Außenrohrs (3). Beim Ausführungsbeispiel nach Figur 2 ist die Dimensionierung des Innenrohrs (2) unterhalb der Stufe (11) stärker als oberhalb der Stufe (11).The dimensioning of the inner tube (2) in the area of the openings (5) is weaker than that of the outer tube (3). In the embodiment of Figure 2, the dimensioning of the inner tube (2) below the step (11) is stronger than above the step (11).

In den Figuren ist das Schließ- und Regelorgan (1) in der Öffnungsstellung gezeigt, in der die Durchbrechungen (5) des Innenrohrs (2) mit den Durchbrechungen (7) des Außenrohrs (3) fluchten. Schmelze fließt aus dem Gefäß durch die Durchbrechungen (5, 7) aus dem Innenrohr (2) nach unten aus. Der Schmelzenfluß läßt sich durch Drehen oder Verschieben des Außenrohrs (3) variieren.In the figures, the closing and regulating element (1) is shown in the open position, in which the openings (5) in the inner tube (2) are aligned with the openings (7) in the outer tube (3). Melt flows out of the vessel through the openings (5, 7) from the inner tube (2) downwards. The melt flow can be varied by rotating or moving the outer tube (3).

Ist ein Notschluß des Schließ- und Regelorgans (1) notwendig, dann wird das Außenrohr (3) in Richtung des Pfeiles (N) verschoben, bis seine Stirnkante (8) auf der Ringfläche (10) auftrifft. Diese Stellung ist in den Figuren 1 und 2 strichliert gezeigt. Das Außenrohr (3) deckt die Durchbrechungen (5) des Innenrohrs (2) ab und umschließt das Innenrohr (2) über seine gesamte, innerhalb des Gefäßes stehende Länge. Dadurch ist gewährleistet, daß nun Schmelze, auch wenn Brüche oder Spalte des Innenrohrs (2) bestehen, nicht mehr austreten kann.If an emergency closing of the closing and control element (1) is necessary, then the outer tube (3) is moved in the direction of the arrow (N) until its front edge (8) hits the ring surface (10). This position is shown in dashed lines in Figures 1 and 2. The outer tube (3) covers the openings (5) of the inner tube (2) and encloses the inner tube (2) over its entire length standing inside the vessel. This ensures that melt can no longer escape, even if there are breaks or gaps in the inner tube (2).

Claims (7)

  1. Closure and control element for tapping liquid metal melt out of a metallurgical vessel with a fixed inner tube (2), which is arranged on the base of the vessel and has at least one opening (5) above the base, and with an outer tube (3), which has an end edge (8) at its lower end extending around the periphery of the inner tube and which is slidable relative to the inner tube in the longitudinal direction through a closure stroke out of an open position, in which the opening in the inner tube is in registry with an opening (7) in the outer tube, into a closed position, characterised in that the possible closure stroke is so large that the outer tube (3) is slidable in the longitudinal direction into a further closed position and that in the further closed position the opening (5) in the inner tube is also covered by the outer tube (3) and the end edge (8) on the lower end of the outer tube (3) seats sealingly on an annular surface (10) which extends around the inner tube (2).
  2. Closure and control element as claimed in Claim 1, characterised in that the annular surface (10) lies in the plane of the base (4).
  3. Closure and control element as claimed in Claim 1 or 2, characterised in that the annular surface is afforded by the base (4) itself.
  4. Closure and control element as claimed in Claim 1 or 2, characterised in that the annular surface (10) is afforded by a step (11) on the inner tube (2).
  5. Closure and control element as claimed in one of the preceding claims, characterised in that the outer tube (3) is of more robust construction than the inner tube (2).
  6. Closure and control element as claimed in one of the preceding claims, characterised in that the inner tube (2) is closed in the manner of a dome at its upper end (6).
  7. Closure and control element as claimed in Claim 6, characterised in that the outer tube (3) has an internal curvature (9) which is associated with the dome-like end (6).
EP90110930A 1989-08-12 1990-06-09 Closing and controlling device for a metallurgical vessel Expired - Lifetime EP0413100B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926678A DE3926678C2 (en) 1989-08-12 1989-08-12 Closing and regulating device for a metallurgical vessel
DE3926678 1989-08-12

Publications (3)

Publication Number Publication Date
EP0413100A2 EP0413100A2 (en) 1991-02-20
EP0413100A3 EP0413100A3 (en) 1992-05-13
EP0413100B1 true EP0413100B1 (en) 1994-05-18

Family

ID=6387005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110930A Expired - Lifetime EP0413100B1 (en) 1989-08-12 1990-06-09 Closing and controlling device for a metallurgical vessel

Country Status (13)

Country Link
US (1) US5025961A (en)
EP (1) EP0413100B1 (en)
JP (1) JPH03102192A (en)
KR (1) KR910004277A (en)
CN (1) CN1021888C (en)
AT (1) ATE105751T1 (en)
BR (1) BR9003576A (en)
CA (1) CA2023071A1 (en)
DE (2) DE3926678C2 (en)
DK (1) DK0413100T3 (en)
ES (1) ES2057278T3 (en)
RU (1) RU2014952C1 (en)
ZA (1) ZA905866B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3934601C1 (en) * 1989-10-17 1990-10-04 Didier-Werke Ag, 6200 Wiesbaden, De
DE4001095A1 (en) * 1990-01-17 1991-07-18 Didier Werke Ag LOCKING DEVICE FOR A MELTING VESSEL
DE4442336A1 (en) * 1994-11-29 1996-05-30 Didier Werke Ag Closing and / or regulating element for a metallurgical vessel
DE20009599U1 (en) * 2000-05-30 2000-10-12 Hetsch Walter Pouring device for liquid metal
JP2008024259A (en) * 2006-07-25 2008-02-07 Sony Corp On-vehicle audio equipment and automobile
CN106311981B (en) * 2016-11-17 2018-03-02 遵义市润丰源钢铁铸造有限公司 The apparatus for pouring of lost foam casting casting

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1585002A (en) * 1924-02-19 1926-05-18 Williams Herman Pengelly Pouring device
GB670729A (en) * 1949-06-10 1952-04-23 Clifford Harry Armstrong Improvements in and relating to valves
DE1261284B (en) * 1964-12-05 1968-02-15 Stoecker & Kunz G M B H Spout stone for pouring pans, intermediate containers and. like
GB1380121A (en) * 1972-04-08 1975-01-08 Dyson Ltd J J Containers for molten metal
SU493296A1 (en) * 1974-03-22 1975-11-28 Ждановский металлургический институт Dosing device
SU846071A1 (en) * 1979-10-22 1981-07-15 Предприятие П/Я Р-6575 Apparatus for casting workpiecies
US4279266A (en) * 1980-04-23 1981-07-21 Halliburton Company Sleeve valve
SU1311847A1 (en) * 1985-02-06 1987-05-23 Предприятие П/Я Г-4807 Apparatus for casting melts
DE3540202C1 (en) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Inflow regulating element for mould level control in a continuous casting plant
JPS63264255A (en) * 1987-04-20 1988-11-01 Tokyo Yogyo Co Ltd Flow rate control device for continuous casting
DE3911736C2 (en) * 1989-04-11 1994-02-24 Didier Werke Ag Closing and / or regulating element for a metallurgical vessel

Also Published As

Publication number Publication date
JPH03102192A (en) 1991-04-26
CN1049464A (en) 1991-02-27
RU2014952C1 (en) 1994-06-30
CN1021888C (en) 1993-08-25
EP0413100A2 (en) 1991-02-20
KR910004277A (en) 1991-03-28
CA2023071A1 (en) 1991-02-13
BR9003576A (en) 1991-08-27
ZA905866B (en) 1991-05-29
US5025961A (en) 1991-06-25
EP0413100A3 (en) 1992-05-13
DK0413100T3 (en) 1994-06-20
ATE105751T1 (en) 1994-06-15
DE59005720D1 (en) 1994-06-23
DE3926678A1 (en) 1991-02-14
DE3926678C2 (en) 1994-09-01
ES2057278T3 (en) 1994-10-16

Similar Documents

Publication Publication Date Title
DE3043993A1 (en) DISPENSING FUNNEL FOR SILOS FOR STORING FREE-FLOWING SOLIDS
WO2020099199A1 (en) Captive closure
EP0413100B1 (en) Closing and controlling device for a metallurgical vessel
DE3043962A1 (en) SHUT-OFF OR MIXING VALVE
EP0232713B1 (en) Automatic venting device for a liquid-filled system
EP0361052B1 (en) Refractory stator-rotor unit for a nozzle gate in a vessel holding molten metal
CH684937A5 (en) Plate for a sliding closure of a molten metal container containing.
DE3809071C2 (en)
DE3022320A1 (en) LOCKING DEVICE FOR GAS PIPES LARGE CROSS-SECTION
WO2004014585A1 (en) Fire resistant ceramic part
DE10115097A1 (en) Device for preventing a vortex effect in the outlet area of a metallurgical melting vessel
DE3939241C2 (en) Locking and / or regulating device
DE3911736A1 (en) LOCKING AND / OR CONTROL ORGAN FOR A METALLURGICAL TUBE
EP0480202B1 (en) Shut-off and/or control mechanism for the outlet of a vessel containing metal
EP0088207B1 (en) Cooling bunker for the dry quenching of coke
DE3901926C1 (en) Gas bubble device
DE3531533C2 (en)
WO2009033633A1 (en) Refractory ceramic adaptor
DE19735053C1 (en) Unit for introduction of gases into metal melts
DE1433388C (en) Gas-tight top seal for blast furnace
EP0791419B1 (en) Sliding gate closure for opening and closing the outlet of a casting vessel for molten metals
CH688712A5 (en) Vessel closure member on the spout of a molten metal containing.
DE10164460B4 (en) container closure
DE102011015928B3 (en) Bottle cap e.g. for drinking bottle, has ventilation channel that is formed in annular duct for pressure equalization when low pressure exists in inlet opening of base
DE400257T1 (en) SLIDING CLOSURE FROM A FIRE-RESISTANT MEASUREMENT FOR METALLURGICAL CONTAINERS.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900629

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17Q First examination report despatched

Effective date: 19930916

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 105751

Country of ref document: AT

Date of ref document: 19940615

Kind code of ref document: T

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940601

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940608

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940609

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19940614

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940615

Year of fee payment: 5

Ref country code: CH

Payment date: 19940615

Year of fee payment: 5

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940523

REF Corresponds to:

Ref document number: 59005720

Country of ref document: DE

Date of ref document: 19940623

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19940627

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19940629

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940630

Year of fee payment: 5

Ref country code: LU

Payment date: 19940630

Year of fee payment: 5

Ref country code: DK

Payment date: 19940630

Year of fee payment: 5

EPTA Lu: last paid annual fee
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3011975

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940808

Year of fee payment: 5

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2057278

Country of ref document: ES

Kind code of ref document: T3

EAL Se: european patent in force in sweden

Ref document number: 90110930.6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950609

Ref country code: GB

Effective date: 19950609

Ref country code: DK

Effective date: 19950609

Ref country code: AT

Effective date: 19950609

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950610

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19950610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19950630

Ref country code: CH

Effective date: 19950630

Ref country code: BE

Effective date: 19950630

BERE Be: lapsed

Owner name: DIDIER-WERKE A.G.

Effective date: 19950630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19951231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3011975

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960301

EUG Se: european patent has lapsed

Ref document number: 90110930.6

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050609