EP0109348B1 - 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
EP0109348B1
EP0109348B1 EP83710075A EP83710075A EP0109348B1 EP 0109348 B1 EP0109348 B1 EP 0109348B1 EP 83710075 A EP83710075 A EP 83710075A EP 83710075 A EP83710075 A EP 83710075A EP 0109348 B1 EP0109348 B1 EP 0109348B1
Authority
EP
European Patent Office
Prior art keywords
stopper
rod
stopper rod
plunger
pouring
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
Application number
EP83710075A
Other languages
German (de)
French (fr)
Other versions
EP0109348A1 (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.
  • a plug rod arrangement is known from US-A-4 219 139.
  • nodular cast iron titanium
  • spheroidal cast iron 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 assembly of the type mentioned, in which compared to the known plug rod assembly greater pouring accuracy and greater security against leakage of the plug rod closure is achieved as a result of slag deposits.
  • the rod protruding into the pouring hole opening as a piston, which can be moved independently of the stopper rod, the pouring hole opening can be cleaned particularly quickly and easily.
  • the sealing surface between the pouring hole brick and the plug rod can be cleaned.
  • This rotary movement of the stopper rod can be carried out after each closure of the vessel or after several closure processes.
  • 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 stopper rod is provided with a central or substantially central channel in which a piston 3 is arranged so as 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 in the longitudinal direction of the stopper rod through the opening of the pouring hole brick 4, any slag present in the pouring hole of the pouring hole brick 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 7 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 - at least at its lower end - is made of a material with a high melting point, such as ceramic material.
  • the stopper rod can carry out a rotary movement which is brought about, for example, by a pneumatic cylinder 6. This rotary movement can either after each closing or after a number of Closures take place, 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 claims.
  • the arrangement according to the invention is not only applicable in the casting of spheroidal cast iron, but can also be used in the casting of 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)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Description

Die Erfindung betrifft eine Stopfenstangenanordnung an Abgußöfen und anderen metallurgischen Gefäßen gemäß dem Oberbegriff des Anspruches 1. Eine solche Stopfenstangenanordnung ist bekannt aus der US-A-4 219 139.The invention relates to a plug rod arrangement on casting furnaces and other metallurgical vessels according to the preamble of claim 1. Such a plug rod arrangement is known from US-A-4 219 139.

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 (Vergütungsstahl) 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 (tempering steel) 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.

Bei der aus der US-A-4 219 139 bekannten Stopfenstangenanordnung ist am vorderen (unteren) Ende der Stopfenstange ein zentral aus der Stopfenstange hervorstehender zylindrischer Stab vorhanden, der starr mit der Stopfenstange verbunden ist. Beim Runterfahren der Stopfenstange gegen den Dichtungssitz im Gießlochstein schiebt sich diese Stange in die Gießlochöffnung hinein. Nachteilig bei dieser Anordnung ist es, daß bei einer teilweisen Blockierung der Dichtungsfläche im Gießlochstein oder-der Gipßlochöfpnung ein Verschluß nicht mehr möglich ist, da die Stopfenstange und der aus ihr herausragende zylindrischer Stab starr miteinander gekoppelt sind. Bei der bekannten Anordnung ist zur Erzielung einer besseren Dichtung die Möglichkeit vorgesehen, die Stopfenstange zusätzlich zu drehen. Auch diese Bewegung wird notwendigerweise für die Stopfenstange und den aus ihr herausragenden Stab gleichzeitig durchgeführt.In the plug rod arrangement known from US-A-4 219 139, a cylindrical rod which projects centrally from the plug rod and is rigidly connected to the plug rod is present at the front (lower) end of the plug rod. When the stopper rod moves down against the sealing seat in the pouring hole brick, this rod pushes into the pouring hole opening. A disadvantage of this arrangement is that if the sealing surface is partially blocked in the pouring hole brick or the gypsum hole opening, a closure is no longer possible, since the stopper rod and the cylindrical rod projecting therefrom are rigidly coupled to one another. In the known arrangement, the possibility of additionally rotating the plug rod is provided to achieve a better seal. This movement is also necessarily carried out simultaneously for the stopper rod and the rod projecting therefrom.

Der Erfindung liegt die Aufgabe zugrunde, eine Stopfenstangenanordnung der eingangs genannten Art zu entwickeln, bei der gegenüber der bekannten Stopfenstangenanordnung eine größere Abgießgenauigkeit und eine größere Sicherheit gegen Undichtigkeit des Stopfenstangeverschlusses in Folge von Schlackenablagerungen erreicht wird.The invention has for its object to develop a plug rod assembly of the type mentioned, in which compared to the known plug rod assembly greater pouring accuracy and greater security against leakage of the plug rod closure is achieved as a result of slag deposits.

Zur Lösung dieser Aufgabe wird eine Stopfenstangenanordnung gemäß dem Oberbegriff des Anspruches 1 vorgeschlagen, welche erfindungsgemäß die im kennzeichnenden Teil des Anspruches 1 genannten Merkmale hat.To solve this problem, a plug rod arrangement is proposed according to the preamble of claim 1, which according to the invention has the features mentioned in the characterizing part of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen genannt.Advantageous embodiments of the invention are mentioned in the further claims.

Durch die Ausbildung des in die Gießlochöffnung hineinragenden Stabes als Kolben, der unabhängig von der Stopfenstange verschiebbar ist, kann die Gießlochöffnung besonders schnell und einfach gereinigt werden.By designing the rod protruding into the pouring hole opening as a piston, which can be moved independently of the stopper rod, the pouring hole opening can be cleaned particularly 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 rotary movement of the stopper rod can be carried out after each closure of the vessel or after several closure processes. 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 7 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 stopper rod is provided with a central or substantially central channel in which a piston 3 is arranged so as 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 in the longitudinal direction of the stopper rod through the opening of the pouring hole brick 4, any slag present in the pouring hole of the pouring hole brick 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 7 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 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 - is made of a material with a high melting point, such as ceramic material. In order to prevent slag from accumulating on the sealing surface between the stopper rod 2 and the pouring hole brick 4, the stopper rod can carry out a rotary movement which is brought about, for example, by a pneumatic cylinder 6. This rotary movement can either after each closing or after a number of Closures take place, 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 der Ansprüche 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 claims. The arrangement according to the invention is not only applicable in the casting of spheroidal cast iron, but can also be used in the casting of 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. 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).
2. Stopper means according to claim 1, characterized in that the plunger (3) is rotatably arranged in the stopper rod (2) and that means are provided to execute a rotating movement of said plunger (3).
3. Stopper means according to claim 1 or 2, characterized in that the stopper rod (2) is rotatable relative to the tapping nozzle (4).
4. Stopper means according to claim 3, characterized in that the stopper rod (2) is rotatable, both separately of and simultaneously with the plunger (3).
5. Stopper means according to any of the preceding claims, characterized in that the stopper rod (2) and/or the tip of the plunger consist of ceramic material that 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
SE8206297A SE444398B (en) 1982-11-05 1982-11-05 STOPPING DEVICE FOR CASTING Ovens
SE8206297 1982-11-05

Publications (2)

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

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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)

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EP (1) EP0109348B1 (en)
JP (1) JPS5987968A (en)
DE (1) DE3369083D1 (en)
ES (1) ES526999A0 (en)
SE (1) SE444398B (en)
ZA (1) ZA838197B (en)

Cited By (1)

* 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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH667024A5 (en) * 1985-08-27 1988-09-15 Fischer Ag Georg METAL HANDLING PROCEDURES.
DE202004004019U1 (en) 2004-03-15 2004-05-19 Penox Gmbh Metering device for a melt
CN105239786B (en) * 2015-10-20 2017-08-25 中铁西北科学研究院有限公司 A kind of crisp alkali brick of Old City Wall rejects instrument
JP2017196627A (en) * 2016-04-25 2017-11-02 株式会社クボタ Removal device, casting machine, and removal method

Family Cites Families (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 (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
WO2013087539A1 (en) 2011-12-14 2013-06-20 Sms Siemag Ag Method for maintaining and/or repairing the spout area of a metallurgical vessel

Also Published As

Publication number Publication date
ZA838197B (en) 1984-06-27
SE444398B (en) 1986-04-14
SE8206297D0 (en) 1982-11-05
ES8406036A1 (en) 1984-07-01
DE3369083D1 (en) 1987-02-19
ES526999A0 (en) 1984-07-01
SE8206297L (en) 1984-05-06
EP0109348A1 (en) 1984-05-23
JPH0245542B2 (en) 1990-10-09
JPS5987968A (en) 1984-05-21

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