EP0109348A1 - Stopper for casting furnaces and other metallurgical vessels - Google Patents

Stopper for casting furnaces and other metallurgical vessels Download PDF

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Publication number
EP0109348A1
EP0109348A1 EP83710075A EP83710075A EP0109348A1 EP 0109348 A1 EP0109348 A1 EP 0109348A1 EP 83710075 A EP83710075 A EP 83710075A EP 83710075 A EP83710075 A EP 83710075A EP 0109348 A1 EP0109348 A1 EP 0109348A1
Authority
EP
European Patent Office
Prior art keywords
piston
pouring
pouring hole
stopper
plug rod
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.)
Granted
Application number
EP83710075A
Other languages
German (de)
French (fr)
Other versions
EP0109348B1 (en
Inventor
Kare Ing. Folgerö
Kohzo Ing. Tanabe
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0109348A1 publication Critical patent/EP0109348A1/en
Application granted granted Critical
Publication of EP0109348B1 publication Critical patent/EP0109348B1/en
Expired 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals

Definitions

  • the invention relates to a plug rod arrangement on casting furnaces and other metallurgical vessels according to the preamble of claim 1.
  • nodular cast iron can be mentioned, which is poured from a casting furnace, e.g. from an ASEA casting furnace of the Presspour type, as described in the ASEA brochure AU 10-103.
  • Similar problems as with spheroidal cast iron also exist with other types of melts.
  • the slag piles or the like on the sealing surfaces between the stopper rod and the pouring hole brick can cause leaks.
  • the invention has for its object to develop a plug rod arrangement of the type mentioned, in which an impairment of the pouring accuracy and the tightness of the plug rod closure by slag deposits can be avoided.
  • the sealing surface between the pouring hole brick and the plug rod can be cleaned.
  • This rotation of the stopper rod can occur after each closure of the vessel or. after several closing operations.
  • This turning of the plug rod is in addition to the movement of the piston. In certain cases, e.g. if you want to save time, the piston movement and the plug rod movement can also take place simultaneously.
  • the piston tip can e.g. consist of ceramic material, which can be provided with steel reinforcement or other reinforcement.
  • the stopper rod is made of ceramic material.
  • 5 denotes a pouring furnace or another metallurgical vessel which is provided with a pouring brick 4.
  • the pouring of melt from the casting furnace 5 is controlled by a stopper rod 2.
  • the Plug rod is provided with a central or substantially central channel, in which a piston 3 is arranged to be able to move back and forth.
  • the lower part of the piston that is to say the part which reaches the area of the pouring hole brick, preferably consists of ceramic material which can be provided with steel reinforcement or another reinforcement.
  • the piston 3 can be moved back and forth through the opening of the pouring hole 4 in the longitudinal direction of the stopper rod, any slag present in the pouring opening of the pouring hole 4 being removed.
  • the piston 3 in the stopper rod 2 has essentially the same diameter as the opening in the pouring hole brick 4. After each pouring, a pressure can 1 presses the piston 3 through the opening in the pouring hole brick 4 via a rod 7 and thereby removes the slag that has accumulated there .
  • the piston In order to prevent the piston from being damaged by the high working temperature, the piston - at least at its lower. End - made of a high melting point material such as ceramic material (see above).
  • the plug rod can execute a rotary movement, which is brought about, for example, by a pneumatic cylinder 6. This rotary movement can take place either after each closure or after a number of closures, for example after every tenth closure. The rotary movement can take place independently of the movement of the piston 3 and / or together with it.
  • the embodiment of the invention described with reference to the figure can be varied in many ways within the scope of the general inventive concept disclosed.
  • the arrangement according to the invention is not only for casting of nodular cast iron, but can also be used when casting other melts.
  • the invention can be used not only for pouring furnaces, but for all types of metallurgical vessels with pouring stone.

Landscapes

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

Abstract

1. Stopper means for casting furnaces (5) and other metallurgical vessels with at least one stopper rod (2) and one corresponding tapping nozzle (4) for the tapping operation and with an element (3) which substantially centrally protrudes from the stopper rod, is adapted to the tapping opening of the tapping nozzle, and can be moved into the tapping nozzle, characterized in that said element (3) is designed as a plunger being movable up and down through the tapping opening independently of the movement of the stopper rod (2).

Description

Die Erfindung betrifft eine Stopfenstangenanordnung an Abgußöfen und anderen metallurgischen Gefäßen gemäß dem Oberbegriff des Anspruches 1.The invention relates to a plug rod arrangement on casting furnaces and other metallurgical vessels according to the preamble of claim 1.

Ein Problem beim Gießen von Metall aus einem metallurgischem Gefäß, dessen Ausgußöffnung durch eine Stopfenstange geöffnet und geschlossen wird, besteht darin, daß der Gießlochstein des metallurgischen Gefäßes verschlackt, was ein ungenaues Abgießen zur Folge hat. Als Beispiel für einen solchen Gießvorgang kann Sphäroguß (VergUtungsstahl) genannt werden, der aus einem Gießofen abgegossen wird, z.B. aus einem ASEA-Gießofen vom Typ Presspour, wie er in der ASEA-Broschüre AU 10-103 beschrieben wird. Ähnliche Probleme wie beim Sphäroguß bestehen auch bei anderen Arten von Schmelzen. Neben den Ungenauigkeiten beim Abgießen können die Schlackenanhäufungen o. dgl. an den Dichtungsflächen zwischen der Stopfenstange und dem Gießlochstein Undichtigkeiten verursachen.A problem with the pouring of metal from a metallurgical vessel, the pouring opening of which is opened and closed by a plug rod, is that the pouring hole brick of the metallurgical vessel slags, which results in inaccurate pouring. As an example of such a casting process, nodular cast iron can be mentioned, which is poured from a casting furnace, e.g. from an ASEA casting furnace of the Presspour type, as described in the ASEA brochure AU 10-103. Similar problems as with spheroidal cast iron also exist with other types of melts. In addition to the inaccuracies during pouring, the slag piles or the like on the sealing surfaces between the stopper rod and the pouring hole brick can cause leaks.

Der Erfindung liegt die Aufgabe zugrunde, eine Stopfenstangenanordnung der eingangs genannten Art zu entwickeln, bei der eine Beeinträchtigung der Abgießgenauigkeit und der Dichtheit des Stopfenstangenverschlusses durch Schlakkenablagerungen vermieden werden.The invention has for its object to develop a plug rod arrangement of the type mentioned, in which an impairment of the pouring accuracy and the tightness of the plug rod closure by slag deposits can be avoided.

Zur Lösung dieser Aufgabe wird eine Stopfenstangenanordnung nach dem Oberbegriff des Anspruches 1 vorgeschlagen, welche die Merkmale des kennzeichnenden Teils des Anspruches 1 aufweist.To solve this problem, a plug rod arrangement is proposed according to the preamble of claim 1, which has the features of the characterizing part of claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen genannt.Advantageous refinements and developments of the invention are mentioned in the subclaims.

Durch die Bewegung des in die Gießöffnung des Gießlochsteines passenden Kolbens kann diese Gießöffnung schnell und einfach gereinigt-werden.By moving the piston that fits into the pouring hole of the pouring hole brick, this pouring opening can be cleaned quickly and easily.

Dadurch, daß auch die Stopfenstange relativ zum Gießlochstein drehbar ausgeführt ist, kann auch die Dichtungsfläche zwischen dem Gießlochstein und der Stopfenstange gereinigt werden. Diese Drehbewegung der Stopfenstange kann nach jedem Verschließen des Gefäßes oder. nach jeweils mehreren Verschließvorgängen durchgeführt werden. Dieses Drehen der Stopfenstange erfolgt zusätzlich zu der Bewegung des Kolbens. In gewissen Fällen, z.B. wenn man einen Zeitgewinn erzielen möchte, können die Kolbenbewegung und die Stopfenstangenbewegung auch gleichzeitig erfolgen. Die Kolbenspitze.kann z.B. aus keramischem Material bestehen, welches mit einer Stahlarmierung oder einer anderen Armierung versehen sein kann. Die Stopfenstange besteht aus keramischem Material.Characterized in that the plug rod is rotatable relative to the pouring hole brick, the sealing surface between the pouring hole brick and the plug rod can be cleaned. This rotation of the stopper rod can occur after each closure of the vessel or. after several closing operations. This turning of the plug rod is in addition to the movement of the piston. In certain cases, e.g. if you want to save time, the piston movement and the plug rod movement can also take place simultaneously. The piston tip can e.g. consist of ceramic material, which can be provided with steel reinforcement or other reinforcement. The stopper rod is made of ceramic material.

Anhand des in der Figur gezeigten Ausführungsbeispiels soll die Erfindung näher erläutert werden.On the basis of the embodiment shown in the figure, the invention will be explained in more detail.

In der Figur bezeichnet 5 einen Abgießofen oder ein anderes metallurgisches Gefäß, der/das mit einem Gießlochstein 4 versehen ist. Das Abgießen von Schmelze aus dem Abgußofen 5 wird durch eine Stopfenstange 2 gesteuert. Die Stopfenstange ist mit einem zentral oder im wesentlichen zentral verlaufenden Kanal versehen, in welchem ein Kolben 3 hin- und herbewegbar angeordnet ist. Der untere Teil des Kolbens, also der Teil, der in den Bereich des Gießlochsteins gelangt, besteht vorzugsweise aus keramischem Material, das mit einer Stahlarmierung oder einer anderen Armierung versehen sein kann. Der Kolben 3 kann durch die Öffnung des Gießlochsteins 4 in Längsrichtung der Stopfenstange hin- und herbewegt werden, wobei eventuell in der Gießöffnung des Gießlochsteins 4 vorhandene Schlacke beseitigt wird. Der Kolben 3 in der Stopfenstange 2 hat im wesentlichen denselben Durchmesser wie die Öffnung im Gießlochstein 4. Nach jedem Abgießen preßt eine Druckdose 1 über eine Stange 7 den Kolben 3 durch die Öffnung im Gießlochstein 4 und beseitigt dabei die Schlacke, die sich dort angesammelt hat.In the figure, 5 denotes a pouring furnace or another metallurgical vessel which is provided with a pouring brick 4. The pouring of melt from the casting furnace 5 is controlled by a stopper rod 2. The Plug rod is provided with a central or substantially central channel, in which a piston 3 is arranged to be able to move back and forth. The lower part of the piston, that is to say the part which reaches the area of the pouring hole brick, preferably consists of ceramic material which can be provided with steel reinforcement or another reinforcement. The piston 3 can be moved back and forth through the opening of the pouring hole 4 in the longitudinal direction of the stopper rod, any slag present in the pouring opening of the pouring hole 4 being removed. The piston 3 in the stopper rod 2 has essentially the same diameter as the opening in the pouring hole brick 4. After each pouring, a pressure can 1 presses the piston 3 through the opening in the pouring hole brick 4 via a rod 7 and thereby removes the slag that has accumulated there .

Um zu verhindern, daß der Kolben durch die hohe Arbeitstemperatur beschädigt wird, wird der Kolben - zumindest an seinem unteren. Ende - aus einem Material mit hohem Schmelzpunkt, wie z.B. keramischem Material (s.o.) hergestellt. Um eine Ansammlung von Schlacke an der Dichtungsfläche zwischen der Stopfenstange 2 und dem Gießlochstein 4 zu verhindern, kann die Stopfenstange eine Drehbewegung ausführen, die beispielsweise durch einen pneumatischen Zylinder 6 herbeigeführt wird. Diese Drehbewegung kann entweder nach jedem Verschließen oder nach einer Anzahl von Verschließungen, beispielsweise nach jeder zehnten Verschließung, stattfinden. Die Drehbewegung kann unabhängig von der Bewegung des Kolbens 3 und/oder zusammen mit dieser erfolgen.In order to prevent the piston from being damaged by the high working temperature, the piston - at least at its lower. End - made of a high melting point material such as ceramic material (see above). In order to prevent slag from accumulating on the sealing surface between the plug rod 2 and the pouring hole brick 4, the plug rod can execute a rotary movement, which is brought about, for example, by a pneumatic cylinder 6. This rotary movement can take place either after each closure or after a number of closures, for example after every tenth closure. The rotary movement can take place independently of the movement of the piston 3 and / or together with it.

Die anhand der Figur beschriebene Ausführungsform der Erfindung kann im Rahmen des offenbarten allgemeinen Erfindungsgedankens in vielfacher Weise variiert werden. Die Anordnung gemäß der Erfindung ist nicht nur beim Gießen von Sphäroguß anwendbar, sondern kann auch beim Abgießen von anderen Schmelzen verwendet werden. Die Erfindung ist nicht nur für Abgußöfen, sondern für alle Arten von metallurgischen Gefäßen mit Gießlochstein verwendbar.The embodiment of the invention described with reference to the figure can be varied in many ways within the scope of the general inventive concept disclosed. The arrangement according to the invention is not only for casting of nodular cast iron, but can also be used when casting other melts. The invention can be used not only for pouring furnaces, but for all types of metallurgical vessels with pouring stone.

Claims (5)

1. Stopfenstangenanordnung an Abgußöfen (5) oder anderen metallurgischen Gefäßen mit mindestens einer Stopfenstange (2) und einem entsprechenden Gießlochstein (4) zum Abgießen, dadurch gekennzeichnet, daß im wesentlichen zentral in der Stopfenstange (2) ein der Gießlochöffnung des Gießlochsteins angepaßter Kolben (3) angeordnet ist, der zur Reinigung des Gießloches nach oben und unten durch die Gießlochöffnung bewegbar ist.1. stopper rod arrangement on casting furnaces (5) or other metallurgical vessels with at least one stopper rod (2) and a corresponding pouring hole brick (4) for pouring, characterized in that a piston adapted to the pouring hole opening of the pouring hole brick is essentially centrally located in the stopper rod (2) 3) is arranged, which can be moved up and down through the pouring hole opening for cleaning the pouring hole. 2. Stopfenstangenanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Kolben (3) drehbar in der Stopfenstange angeordnet ist und Mittel zur Ausführung einer Drehbewegung des Kolbens vorhanden sind.2. Stopper rod arrangement according to claim 1, characterized in that the piston (3) is rotatably arranged in the stopper rod and means are provided for executing a rotary movement of the piston. 3. Stopfenstangenanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stopfenstange (2) relativ zu dem Gießlochstein drehbar ist.3. plug rod arrangement according to claim 1 or 2, characterized in that the plug rod (2) is rotatable relative to the pouring hole brick. 4. Stopfenstangenanordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Stopfenstange sowohl separat als auch zusammen mit dem Kolben (3) drehbar ist.4. plug rod arrangement according to claim 3, characterized in that the plug rod is rotatable both separately and together with the piston (3). 5. Stopfenstangenanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Stopfenstange und/oder die Kolbenspitze aus keramischem Material besteht, das mit Stahl oder einem anderen Metall armiert sein kann.5. Plug rod arrangement according to one of the preceding claims, characterized in that the plug rod and / or the piston tip consists of ceramic material which can be reinforced with steel or another metal.
EP83710075A 1982-11-05 1983-10-26 Stopper for casting furnaces and other metallurgical vessels Expired EP0109348B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8206297 1982-11-05
SE8206297A SE444398B (en) 1982-11-05 1982-11-05 STOPPING DEVICE FOR CASTING Ovens

Publications (2)

Publication Number Publication Date
EP0109348A1 true EP0109348A1 (en) 1984-05-23
EP0109348B1 EP0109348B1 (en) 1987-01-14

Family

ID=20348473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710075A Expired EP0109348B1 (en) 1982-11-05 1983-10-26 Stopper for casting furnaces and other metallurgical vessels

Country Status (6)

Country Link
EP (1) EP0109348B1 (en)
JP (1) JPS5987968A (en)
DE (1) DE3369083D1 (en)
ES (1) ES8406036A1 (en)
SE (1) SE444398B (en)
ZA (1) ZA838197B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586598A1 (en) * 1985-08-27 1987-03-06 Fischer Ag Georg Method for handling molten metal
EP1577036A1 (en) 2004-03-15 2005-09-21 Penox GmbH Metering device for a melt
CN105239786A (en) * 2015-10-20 2016-01-13 中铁西北科学研究院有限公司 Ancient city wall efflorescent brick removing tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088619A1 (en) 2011-12-14 2013-06-20 Sms Siemag Ag Method for maintenance and / or repair of the spout area of a metallurgical vessel
JP2017196627A (en) * 2016-04-25 2017-11-02 株式会社クボタ Removal device, casting machine, and removal method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR584217A (en) * 1923-12-10 1925-02-02 Arbed Reinforced buffer for ladles and other similar containers
DE1231394B (en) * 1965-07-06 1966-12-29 Bbc Brown Boveri & Cie Device for transporting liquid metal
US4219139A (en) * 1978-11-01 1980-08-26 Albany International Corp. Bottom pouring crucible
FR2495516A1 (en) * 1980-12-08 1982-06-11 Europ Accumulateurs Doser for molten lead kept at constant height in tank - esp. for dosing lead into moulds to mfr. plates for lead accumulators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR584217A (en) * 1923-12-10 1925-02-02 Arbed Reinforced buffer for ladles and other similar containers
DE1231394B (en) * 1965-07-06 1966-12-29 Bbc Brown Boveri & Cie Device for transporting liquid metal
US4219139A (en) * 1978-11-01 1980-08-26 Albany International Corp. Bottom pouring crucible
FR2495516A1 (en) * 1980-12-08 1982-06-11 Europ Accumulateurs Doser for molten lead kept at constant height in tank - esp. for dosing lead into moulds to mfr. plates for lead accumulators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586598A1 (en) * 1985-08-27 1987-03-06 Fischer Ag Georg Method for handling molten metal
DE3622327A1 (en) * 1985-08-27 1987-03-12 Fischer Ag Georg Method for handling molten metal
EP1577036A1 (en) 2004-03-15 2005-09-21 Penox GmbH Metering device for a melt
CN105239786A (en) * 2015-10-20 2016-01-13 中铁西北科学研究院有限公司 Ancient city wall efflorescent brick removing tool

Also Published As

Publication number Publication date
ES526999A0 (en) 1984-07-01
DE3369083D1 (en) 1987-02-19
SE8206297D0 (en) 1982-11-05
ZA838197B (en) 1984-06-27
SE444398B (en) 1986-04-14
JPS5987968A (en) 1984-05-21
JPH0245542B2 (en) 1990-10-09
ES8406036A1 (en) 1984-07-01
EP0109348B1 (en) 1987-01-14
SE8206297L (en) 1984-05-06

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