EP0734801B2 - Device for controlling an inflow of metal by means of a stopper - Google Patents
Device for controlling an inflow of metal by means of a stopper Download PDFInfo
- Publication number
- EP0734801B2 EP0734801B2 EP96104202A EP96104202A EP0734801B2 EP 0734801 B2 EP0734801 B2 EP 0734801B2 EP 96104202 A EP96104202 A EP 96104202A EP 96104202 A EP96104202 A EP 96104202A EP 0734801 B2 EP0734801 B2 EP 0734801B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- stopper
- casting
- lifting rod
- guide
- 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
Links
- 239000002184 metal Substances 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 title claims description 8
- 238000005266 casting Methods 0.000 claims description 17
- 238000009749 continuous casting Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000007257 malfunction Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004540 pour-on Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- 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
Definitions
- the invention relates to a device for Regulating a metal inflow from a pouring vessel in a continuous casting mold according to the characteristics of the The preamble of claim 1.
- DE-1 458 076 A An example of a control device according to the preamble of claim 1 is disclosed in DE-1 458 076 A. With this device, the position of a stopper of a ladle changed in a controlled manner are by means of an electromechanical drive, whose control is operated manually. In an emergency, for example in the event of a power failure, it may be necessary perform a stopper movement manually.
- DE - 1 180 096 B proposes a compact design for the Actuating device for a stopper of a ladle with manually operated, electromechanical Plug drive before. This example includes the actuating device a plug guide rod, which is formed by the drive itself.
- a device is known from EP publication 0 444 297 A2 to regulate a metal inflow from a Pouring vessel into a continuous casting mold for one Steel strand known.
- a plug that can be raised and lowered interacts with a pouring nozzle.
- the stroke of the Plugging can be done on the one hand by means of a drive, e.g. B. a piston-cylinder unit, and on the other hand in an emergency can be operated by hand using an articulated lever.
- the Metal inflow according to a predetermined program by means of a computer and / or by means of a bath level measuring device to be controlled.
- the invention has for its object to provide a stopper control device which overcomes the aforementioned disadvantages and in particular leaves the classic stopper actuation concept, which provides for manual intervention on a stopper regulating lever at the start or in emergency situations.
- the plug control should also have a significantly higher regulation accuracy and regulation speed in order to further improve the strand quality. For all malfunctions occurring in practice, such as breakthroughs, plug wear and nozzle washing, Al 2 O 3 deposits, etc., predetermined sequence programs should also be able to be used automatically or via remote control.
- the new plug actuation concept is intended to save personnel costs during commissioning and service, but also during the casting operation itself.
- the plugs are for the outflow regulation compared to the pouring nozzle as a rule lowered. But plugs are also known to pass through a rotary movement control the outflow control.
- the guiding device exists for a lifting and lowering stopper from a lifting rod and a guide.
- the device for regulating the flow of metal the programmed or has to perform remote-controlled casting processes, be attached.
- the device can save particularly effective according to one embodiment for intermediate vessels for multi-line systems be applied.
- Such intermediate vessels have up to eight pouring nozzles, each with a stopper regulation on.
- Module box a device for hanging on Arrange watering vessel and quick release elements to be provided for a rigid attachment.
- Precise flow control requires one high stroke accuracy, high movement speed the lifting rod and a minimum of movable Parts between the lifting rod and the servo motor.
- the drive axis of the engine and the Lift rod together with its guide parallel to each other to be arranged in the module box and the rotary movement the motor directly onto a ball screw drive and from this in turn directly to the lifting rod transfer.
- the control accuracy can be further increased when the vertical guide of the lifting rod consists of a ball bearing longitudinal guide and their length is 50 - 80% of the intermediate vessel height (bottom cover layer) is.
- a handwheel on the spindle of the ball screw drive can be coupled.
- the Pouring nozzle an emergency slide with a cap assigned.
- a pouring vessel 1 and 2 is a pouring vessel as an intermediate vessel 2 within a continuous steel caster shown.
- a continuous casting mold 3 provides a casting mold
- a pouring nozzle 4 acts with a lifting and lowerable plug 5 together and regulates the steel flow from the intermediate vessel 2 into the continuous casting mold 3.
- the inflow of steel into the mold 3 is after a predetermined program, e.g. an entertainment program, and / or after a bath level measuring device 7 controlled.
- the refractory stopper 5 encases the stopper rod 8, which has an arm 9 with a lifting rod 10 is connected.
- the lifting rod 10 is in one Vertical guide 12 arranged in this example consists of a ball bearing longitudinal guide.
- On computer controlled electromechanical drive in the Form of a servo motor 13 is together with the lifting rod 10 and its vertical guide 12 in a module box 15 arranged.
- the module box 15 is on Intermediate vessel 2 with clamping elements 16 interchangeable attached. To ensure easy replacement, are on the module box 15 Suspension devices 17 are provided.
- the clamping elements 16 are as quick release and centering elements educated. Between the wall 19 of the tundish 2 and the module box 15 is an open air gap 20 arranged.
- the module box 15 is through a cover 21 sealed dust-proof and via a compressed air connection 22 an air overpressure can be built up.
- the air pressure is part of an air circulation system 23, which is represented by arrow.
- the air circulation system 23 in the module box serves as Coolant for the motor 13, a ball screw 27, 28, the lifting rod 10 and the plug support arm 9.
- a drive axis 25 of the motor 13 is over a flexible, angularly rigid coupling 26 with the ball screw 27 connected.
- the spindle 27 forms together with a nut 28 a ball screw drive, the nut 28 and the lifting rod 10 over a bridge 29 are rigidly connected. About the bridge 29 becomes the path of the mother 28 directly onto the Transfer lifting rod 10.
- the drive shaft 25 with the Spindle 27 are parallel and at a short distance from Lift rod 10 arranged in the module box 15.
- a Handwheel 30 arranged, which can be coupled to the spindle 27 and a height adjustment of the lifting rod 10 allowed if the electrical connection cable to the Engine is unplugged.
- a signal generator 33 connected to a power failure detected and a computer in the control cabinet 34 reports are further in the electrical Drive supply capacitors arranged whose Capacity for a program-controlled emergency closing movement of the plug is sufficient in the event of a power failure.
- a plug control device is also a malfunction subjected that come from the refractory side, such as breaking refractory parts on the stopper, breaking or wash out the pouring nozzle etc. order a Leakage of the intermediate vessel in an emergency situation regardless of the stopper control, is an emergency slide controlled by a piston-cylinder unit 36 attached to the intermediate vessel bottom. With a locking block of the emergency slide 36 can Outflow nozzle 4 closed and, if necessary, a pouring tube can be separated at the same time. The Medium for the actuation of the emergency slide is from delivered an accumulator.
- Intermediate vessels for continuous casting plants are provided with up to eight plugs, each plug its own module box and its own control assigned. If the intermediate vessel from the preheating position in the pouring position over the molds or brought into a filling position near the pouring position, see above the plug drive motor is started by means of electrical connectors 37 to the control cabinet 34 connected. After this connection the Stopper movement from the start of pouring only controlled by electrical signals.
- Transmission means such as wire, light guide, radio, infrared etc., find application.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Casting Devices For Molds (AREA)
- Continuous Casting (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum
Regeln eines Metallzuflusses aus einem Giessgefäss in
eine Stranggiesskokille gemäss den Merkmalen des
Oberbegriffes von Anspruch 1.The invention relates to a device for
Regulating a metal inflow from a pouring vessel in
a continuous casting mold according to the characteristics of the
The preamble of
Beim Giessen von Metallen, insbesondere von Stahl, sind Stopfenregeleinrichtungen bei Pfannen und Durchlaufgefässen seit langem bekannt.When casting metals, especially Steel, are stopper control devices for pans and Flow-through vessels have been known for a long time.
Ein Beispiel für eine Regelvorrichtung gemäss
dem Oberbegriff des Anspruchs 1 ist offenbart in DE - 1
458 076 A. Bei dieser Vorrichtung kann die Stellung
eines Stopfens einer Giesspfanne kontrolliert verändert
werden mittels eines elektromechanischen Antriebs,
dessen Steuerung manuell bedient wird. Im Notfall, beispielsweise
bei Stromausfall, kann es notwendig sein,
eine Bewegung des Stopfens manuell auszuführen. DE
- 1 180 096 B schlägt eine Kompaktbauweise für die
Betätigungsvorrichtung für einen Stopfen einer Giesspfanne
mit manuell zu bedienendem, elektromechanischem
Stopfenantrieb vor. In diesem Beispiel umfasst
die Betätigungsvorrichtung eine Stopfenführungsstange,
die durch den Antrieb selbst gebildet wird.An example of a control device according to
the preamble of
Mit der Einführung des Stranggiessens sind an die Regelung des Metallzuflusses in Stranggiesskokillen neue Anforderungen entstanden. Die genaue Einhaltung einer vorbestimmten Badspiegelhöhe, ein automatisches Angiessen, schnelle Reaktion bei Durchbrüchen etc. sind Aufgabenstellungen, für die in den letzten Jahren viele Lösungsvorschläge erarbeitet wurden.With the introduction of continuous casting are on the regulation of the metal inflow in continuous casting molds new requirements emerged. Exact compliance a predetermined bath level height automatic pouring, quick reaction to Breakthroughs etc. are tasks for which in In the past few years many solutions have been worked out were.
Allen diesen Vorschlägen für eine Mechanisierung und Automatisierung einer Stopfenregeleinrichtung lag ein Sicherheitskonzept zugrunde, das beim Angiessen, bei einem Durchbruch, bei einem Kokillenüberlauf etc. ein rasches Eingreifen von Hand an einer an der Hubstange angreifenden Hebeleinrichtung vorsah. Als Antrieb für programmgesteuerte Bewegungen der Hubstange bzw. der Stopfenstange haben sich in der Praxis Hydrauliksteuerungen durchgesetzt. Vorschläge für Elektroantriebe haben aus verschiedenen Gründen in Stahlwerken wenig Eingang gefunden. Der unkontrollierte Verschleiss von Stopfen und Ausgussdüsen, eine sich während des Giessens laufend verändernde Schliessgrundstellung des Stopfens, die Einhaltung einer vorbestimmten Schliesskraft zwischen Stopfen und Ausgussdüse etc. sind mittels hydraulischen Antrieben in der Praxis befriedigend gelöst worden.All of these proposals for mechanization and automation of a plug control device was based on a security concept that the Pour on, in the event of a breakthrough, in a mold overflow etc. rapid intervention by hand on one provided on the lifting rod engaging lever device. As a drive for program-controlled movements the lifting rod or the plug rod have in in practice hydraulic controls. proposals for electric drives have different Little found in steelworks. The uncontrolled wear of plugs and pouring nozzles, a constantly changing one during casting Basic closing position of the stopper, the Compliance with a predetermined closing force between The stopper and pouring nozzle etc. are hydraulic Drives have been satisfactorily solved in practice.
Aus EP-Publikation 0 444 297 A2 ist eine Vorrichtung zum Regeln eines Metallzuflusses aus einem Giessgefäss in eine Stranggiesskokille für einen Stahlstrang bekannt. Ein heb- und senkbarer Stopfen wirkt mit einer Ausgussdüse zusammen. Der Hub des Stopfens kann einerseits mittels einem Antrieb, z. B. einer Kolbenzylindereinheit, und anderseits im Notfall von Hand über einen Gelenkhebel betätigt werden. Beim Angiessen einer Stranggiesskokille kann der Metallzufluss nach einem vorbestimmten Programm mittels einem Rechner und/oder mittels einer Badspiegelmesseinrichtung gesteuert werden.A device is known from EP publication 0 444 297 A2 to regulate a metal inflow from a Pouring vessel into a continuous casting mold for one Steel strand known. A plug that can be raised and lowered interacts with a pouring nozzle. The stroke of the Plugging can be done on the one hand by means of a drive, e.g. B. a piston-cylinder unit, and on the other hand in an emergency can be operated by hand using an articulated lever. When casting a continuous casting mold, the Metal inflow according to a predetermined program by means of a computer and / or by means of a bath level measuring device to be controlled.
Neben rechnergesteuerten Giessprogrammen, die auch ein Verschliessen der Ausgussdüse bei einem Strangdurchbruch beinhalten können, ist es jederzeit möglich, die hydraulische Steuerung auszuschalten und durch ein manuelles Eingreifen am Gelenkhebel sowohl den Giessbetrieb bei Störungen als auch bei Notfällen zu übernehmen. Solche Störungen können kokillenüberläufe, Stopfen und/oder Ausgussdüsenverschleiss, Durchbrüche, Al2 O3 Ablagerungen etc. sein.In addition to computer-controlled casting programs, which can also include closing the pouring nozzle in the event of a strand breakthrough, it is possible at any time to switch off the hydraulic control and to take over the casting operation in the event of malfunctions as well as emergencies by manual intervention on the articulated lever. Such disturbances can be mold overflows, stoppers and / or pouring nozzle wear, breakthroughs, Al 2 O 3 deposits etc.
Das Konzept mit einem manuellen Füllen der Kokille beim Angiessen über einen Gelenkhebel verhindert eine einfache Kompakteinrichtung.The concept with a manual filling of the Mold prevented when cast on via an articulated lever a simple compact device.
Der Erfindung liegt die Aufgabe zugrunde, eine Stopfenregeleinrichtung zu schaffen, die die vorgenannten Nachteile überwindet und insbesondere das klassische Stopfenbetätigungskonzept, das ein manuelles Eingreifen an einem Stopfenregulierhebel beim Start oder bei Notsituationen vorsieht, verlässt. Die Stopfensteuerung soll im weiteren eine wesentlich höhere Reguliergenauigkeit und Reguliergeschwindigkeit aufweisen, um die Strangqualität weiter zu verbessern. Auch sollen für alle in der Praxis vorkommenden Störungsfälle, wie Durchbrüche, Stopfenverschleiss und Düsenauswaschungen, Al2 O3 Ablagerungen etc., vorbestimmte Ablaufprogramme automatisch oder über eine Fernsteuerung einsetzbar sein. Das neue Stopfenbetätigungskonzept soll Personalkosten bei der Inbetriebnahme und im Service, aber auch beim Giessbetrieb selbst einsparen.The invention has for its object to provide a stopper control device which overcomes the aforementioned disadvantages and in particular leaves the classic stopper actuation concept, which provides for manual intervention on a stopper regulating lever at the start or in emergency situations. The plug control should also have a significantly higher regulation accuracy and regulation speed in order to further improve the strand quality. For all malfunctions occurring in practice, such as breakthroughs, plug wear and nozzle washing, Al 2 O 3 deposits, etc., predetermined sequence programs should also be able to be used automatically or via remote control. The new plug actuation concept is intended to save personnel costs during commissioning and service, but also during the casting operation itself.
Gemäss der Erfindung wird diese Aufgabe
durch die Summe der Merkmale von Anspruch 1 gelöst.According to the invention, this object
solved by the sum of the features of
Mit der erfindungsgemässen Vorrichtung ist eine manuelle Stopfenbetätigung mittels der Hebeleinrichtung nicht mehr möglich. Jede Stopfenbewegung wird einem rechner-oder fernbedientem elektrischen Antrieb übertragen. Sich anbahnende Störungsfälle werden durch Erfassung entsprechender Parameter rechtzeitig erkannt und über vorbestimmte Programme entsprechend korrigiert. Durch das frühe Erkennen von sich anbahnenden Störungen kann die Strangqualität, insbesondere die Strangoberfläche, verbessert werden. Die Weglassung aller hydraulischen Antriebs-und Steuerelemente vereinfacht sowohl die Inbetriebnahme der Anlage als auch den Unterhalt solcher Stopfenregeleinrichtungen. Auch kann Giesspersonal weiter eingespart und die Sicherheit erhöht werden. Der Verzicht auf die Ausrüstung mit einem Gelenkhebel schliesst auch alle durch den Gelenkhebel verursachte Trägheitsmomente aus.With the device according to the invention manual plug actuation using the lever device not possible anymore. Every stopper movement becomes a computer or remote-controlled electrical Transfer drive. Impending malfunctions by capturing appropriate parameters recognized in time and via predetermined programs corrected accordingly. By early detection of impending disturbances can the strand quality, especially the strand surface can be improved. The omission of all hydraulic drive and control elements simplifies both the commissioning of the Plant as well as the maintenance of such plug control devices. Casting personnel can also be saved further and security will be increased. The waiver of the Equipment with an articulated lever also closes all moments of inertia caused by the articulated lever out.
Für die Ausflussregelung sind die Stopfen gegenüber der Ausgussdüse in der Regel heb- und senkbar. Es sind aber auch Stopfen bekannt, die durch eine Drehbewegung die Ausflussregelung steuern. Gemäss einem Ausführungsbeispiel besteht die Führungseinrichtung für einen heb- und senkbaren Stopfen aus einer Hubstange und einer Führung.The plugs are for the outflow regulation compared to the pouring nozzle as a rule lowered. But plugs are also known to pass through a rotary movement control the outflow control. According to one embodiment, the guiding device exists for a lifting and lowering stopper from a lifting rod and a guide.
Die Vorrichtung zum Regeln des Metallzuflusses kann an jedes Giessgefäss, das programmierte oder ferngesteuerte Giessvorgänge zu erfüllen hat, angebracht werden. Um Personal auf einer Stranggiessanlage einsparen zu können, kann die Vorrichtung gemäss einem Ausführungsbeispiel besonders wirkungsvoll bei Zwischengefässen für Mehrstranganlagen angewendet werden. Solche Zwischengefässe weisen bis zu acht Ausgussdüsen mit je einer Stopfenregulierung auf.The device for regulating the flow of metal the programmed or has to perform remote-controlled casting processes, be attached. To staff on a continuous caster The device can save particularly effective according to one embodiment for intermediate vessels for multi-line systems be applied. Such intermediate vessels have up to eight pouring nozzles, each with a stopper regulation on.
Um im rauhen Stahlwerksbetrieb die Verschmutzung, den Verschleiss und die Störanfälligkeit bei solchen Regelvorrichtungen zu reduzieren, wird zusätzlich vorgeschlagen, im Modulkasten einen Luftüberdruck vorzusehen.In order to avoid pollution in rough steelworks, the wear and the susceptibility to failure to reduce with such control devices additionally proposed an air overpressure in the module box provided.
Es ist grundsätzlich möglich, ein im Stand der Technik bekanntes Kühlsystem für den Modulkasten vorzusehen. Gemäss einem Ausführungsbeispiel kann mit Vorteil der Luftüberdruck über ein Luftzirkulationssystem aufgebaut werden, wobei die Luft den Modulkasten, die Hubstange und einen Stopfenträgerarm als Kühlmedium durchfliesst. Ein zusätzlicher Schutz gegen Erwärmung des Modulkastens ergibt sich, wenn bei der Montage zwischen der Wand des Giessgefässes und dem Modulkasten ein offener Luftspalt angeordnet ist.It is basically possible to use one in the state of the Technology known cooling system for the module box provided. According to one embodiment, with advantage of air overpressure via an air circulation system be built up, with the air the module box, the lifting rod and a plug support arm as Coolant flows through. Additional protection against heating of the module box arises if when installing between the wall of the pouring vessel and an open air gap is arranged in the module box is.
Um Unterhalts- und Kontrollarbeiten in entsprechenden Werkstätten durchführen zu können, und um die Vorbereitungszeit am Zwischengefäss möglichst klein zu halten, wird zusätzlich vorgeschlagen, am Modulkasten eine Einrichtung zum Aufhängen am Giessgefäss anzuordnen und Schnellspannelemente für eine starre Befestigung vorzusehen.For maintenance and control work in appropriate To be able to carry out workshops, and around the preparation time on the tundish if possible keeping it small is also suggested on Module box a device for hanging on Arrange watering vessel and quick release elements to be provided for a rigid attachment.
Eine genaue Durchflussregelung erfordert eine hohe Hubgenauigkeit, eine hohe Bewegungsgeschwindigkeit der Hubstange und ein Minimum an beweglichen Teilen zwischen der Hubstange und dem Servomotor. Um dies zu erreichen und um gleichzeitig eine entsprechend lange Führung der Hubstange sicherzustellen, wird, gemäss einem weiteren Ausführungsbeispiel, vorgeschlagen, die Antriebsachse des Motors und die Hubstange zusammen mit ihrer Führung parallel zueinander im Modulkasten anzuordnen und die Drehbewegung des Motors direkt auf einen Kugelgewindetrieb und von diesem wiederum direkt auf die Hubstange zu übertragen. Die Regelgenauigkeit kann weiter gesteigert werden, wenn die Vertikalführung der Hubstange aus einer kugelgelagerten Längsführung besteht und ihre Länge 50 - 80 % der Zwischengefässhöhe (Boden-Deckelauflage) beträgt.Precise flow control requires one high stroke accuracy, high movement speed the lifting rod and a minimum of movable Parts between the lifting rod and the servo motor. In order to achieve this and at the same time a corresponding ensure long guidance of the lifting rod according to a further exemplary embodiment, it is proposed that the drive axis of the engine and the Lift rod together with its guide parallel to each other to be arranged in the module box and the rotary movement the motor directly onto a ball screw drive and from this in turn directly to the lifting rod transfer. The control accuracy can be further increased when the vertical guide of the lifting rod consists of a ball bearing longitudinal guide and their length is 50 - 80% of the intermediate vessel height (bottom cover layer) is.
Um den Stopfen bei der Zwischengefässvorbereitung, wie Stopfenmontage, Vorheizung etc., in seiner Höhenlage bewegen zu können, ist, im Sinne einer zusätzlichen Ausbildung, ein Handrad an die Spindel des Kugelgewindetriebes ankuppelbar.Around the stopper when preparing the intermediate vessel, such as plug assembly, preheating etc., in its Being able to move at an altitude is, in the sense of a additional training, a handwheel on the spindle of the ball screw drive can be coupled.
Um bei einem Stromausfall den Stopfen automatisch in Schliessposition zu bringen, sind im Stand der Technik mit Druck beaufschlagte Akkumulatoren, Federpakete etc. bekannt. Solche Vorrichtungen verursachen zusätzliche Investitions- und Unterhaltskosten und sind für eine Modullösung schlecht geeignet. Gemäss einem vorteilhaften Ausführungsbeispiel wird vorgeschlagen, in der Stromversorgung einen Signalgeber für eine schnelle Detektion eines Stromausfalles und in der elektrischen Antriebsspeisung Kondensatoren anzuordnen, deren Kapazität für eine programmgesteuerte Notschliessbewegung des Stopfens bei Stromausfall ausreicht.To automatically stop the plug in the event of a power failure are in the stand position the technology pressurized accumulators, Spring packs etc. known. Cause such devices additional investment and maintenance costs and are poorly suited for a module solution. According to an advantageous embodiment proposed a signal generator in the power supply for quick detection of a power failure and capacitors in the electric drive supply arrange their capacity for a program-controlled Emergency closing movement of the stopper Power failure is sufficient.
Zur Erhöhung der Sicherheit bei Schäden an feuerfesten Teilen, wie Stopfenbrüche, unregelmässiger Düsenverschleiss etc., oder Störungen im Rechner etc., wird, gemäss einem weiteren Ausführungsbeispiel, der Ausgussdüse ein Notschieber mit einem Verschlussstein zugeordnet.To increase security in the event of damage refractory parts, such as plug breaks, more irregular Nozzle wear etc., or malfunctions in the computer etc., is, according to a further embodiment, the Pouring nozzle an emergency slide with a cap assigned.
Im nachfolgenden soll anhand von Figuren die Erfindung zusätzlich erläutert werden.In the following, the figures Invention are also explained.
Dabei zeigen:
- Fig. 1
- einen Vertikalschnitt durch ein Zwischengefäss mit einer Stopfenregeleinrichtung und
- Fig. 2
- einen etwas vergrösserten Schnitt nach der Linie II-II von Fig. 1.
- Fig. 1
- a vertical section through an intermediate vessel with a stopper control device and
- Fig. 2
- a somewhat enlarged section along the line II-II of Fig. 1st
In Fig. 1 und 2 ist ein Giessgefäss als Zwischengefäss
2 innerhalb einer Stahlstranggiessanlage
dargestellt. Eine Stranggiesskokille 3 stellt eine Giessform
dar. Eine Ausgussdüse 4 wirkt mit einem heb- und
senkbaren Stopfen 5 zusammen und regelt den Stahlzufluss
aus dem Zwischengefäss 2 in die Stranggiesskokille
3. Der Stahlzufluss in die Kokille 3 wird nach
einem vorbestimmten Programm, z.B. einem Angiessprogramm,
und/oder nach einer Badspiegelmesseinrichtung
7 gesteuert.1 and 2 is a pouring vessel as an
Der feuerfeste Stopfen 5 ummantelt die Stopfenstange
8, welche über einen Arm 9 mit einer Hubstange
10 verbunden ist. Die Hubstange 10 ist in einer
Vertikalführung 12 angeordnet, die in diesem Beispiel
aus einer kugelgelagerten Längsführung besteht. Ein
rechnergesteuerter elektromechanischer Antrieb in der
Form eines Servomotors 13 ist zusammen mit der Hubstange
10 und ihrer Vertikalführung 12 in einem Modulkasten
15 angeordnet. Der Modulkasten 15 ist am
Zwischengefäss 2 mit Spannelementen 16 auswechselbar
befestigt. Um ein leichtes Auswechseln zu gewährleisten,
sind am Modulkasten 15
Aufhängeeinrichtungen 17 vorgesehen. Die Spannelemente
16 sind als Schnellspann- und Zentrierelemente
ausgebildet. Zwischen der Wand 19 des Zwischengefässes
2 und dem Modulkasten 15 ist ein offener Luftspalt
20 angeordnet.The refractory stopper 5 encases the stopper rod
8, which has an
Der Modulkasten 15 ist durch einen Deckel 21
staubdicht verschlossen und über einen Pressluftanschluss
22 kann ein Luftüberdruck aufgebaut werden.
Der Luftüberdruck ist Bestandteil eines Luftzirkulationssystems
23, das durch Pfeil dargestellt ist. Das Luftzirkulationssystem
23 im Modulkasten dient als
Kühlmedium für den Motor 13, einen Kugelgewindetrieb
27, 28, die Hubstange 10 und den Stopfentragarm 9.The
Eine Antriebsachse 25 des Motors 13 ist über
eine flexible, winkelstarre Kupplung 26 mit der Kugelgewindespindel
27 verbunden. Die Spindel 27 bildet
zusammen mit einer Mutter 28 einen Kugelgewindetrieb,
wobei die Mutter 28 und die Hubstange 10 über
eine Brücke 29 starr miteinander verbunden sind. Ueber
die Brücke 29 wird der Weg der Mutter 28 direkt auf die
Hubstange 10 übertragen. Die Antriebsachse 25 mit der
Spindel 27 sind parallel und mit geringem Abstand zur
Hubstange 10 im Modulkasten 15 angeordnet.A
Am unteren Ende des Modulkastens 15 ist ein
Handrad 30 angeordnet, das mit der Spindel 27 kuppelbar
ist und eine Höhenverstellung der Hubstange 10
erlaubt, wenn das elektrische Anschlusskabel an den
Motor ausgesteckt ist. Nach einer Verschiebung des
Zwischengefässes 2 in die Giessposition wird der
Modulkasten 15 wieder elektrisch mit dem Steuerschrank
34 verbunden und das Handrad 30 von der
Spindel entkuppelt.At the lower end of the
In der Stromversorgung 32 für den Motor 13 ist
ein Signalgeber 33 angeschlossen, der einen Stromausfall
detektiert und einem Rechner im Steuerschrank
34 meldet Im weiteren sind in der elektrischen
Antriebsspeisung Kondensatoren angeordnet, deren
Kapazität für eine programmgesteuerte Notschliessbewegung
des Stopfens bei Stromausfall ausreicht.In the
Eine Stopfenregeleinrichtung ist auch Störungen
unterworfen, die von der Feuerfestseite herrühren,
wie Abbrechen von feuerfesten Teilen am Stopfen, Brechen
oder auswaschen der Ausgussdüse etc. Um ein
Auslaufen des Zwischengefässes in einer Notsituation
unabhängig von der Stopfensteuerung zu verhindern,
ist ein mit einer Kolbenzylindereinheit gesteuerter Notschieber
36 am Zwischengefässboden angebracht. Mit
einem Verschlussstein des Notschiebers 36 kann die
Ausflussdüse 4 verschlossen und, wenn erforderlich,
gleichzeitig ein Giessrohr abgetrennt werden. Das
Medium für die Betätigung des Notschiebers wird von
einem Akkumulator geliefert.A plug control device is also a malfunction
subjected that come from the refractory side,
such as breaking refractory parts on the stopper, breaking
or wash out the pouring nozzle etc. order a
Leakage of the intermediate vessel in an emergency situation
regardless of the stopper control,
is an emergency slide controlled by a piston-
Zwischengefässe für Stranggiessanlagen sind
mit bis zu acht Stopfen versehen, wobei jedem Stopfen
ein eigener Modulkasten und eine eigene Steuerung
zugeordnet ist. Wird das Zwischengefäss aus der Vorheizstellung
in die Giessstellung über den Kokillen oder
in eine Füllstellung nahe der Giessstellung gebracht, so
wird vor Giessbeginn der Stopfenantriebsmotor mittels
elektrischen Steckverbindungen 37 mit dem Steuerschrank
34 verbunden. Nach diesem Anschluss wird die
Stopfenbewegung ab Giessbeginn ausschliesslich
durch elektrische Signale gesteuert. Für die Fernsteuerung
können alle im Stand der Technik bekannten
Uebertragungsmittel, wie Draht, Lichtleiter, Funk, Infrarot
etc., Anwendung finden.Intermediate vessels for continuous casting plants are
provided with up to eight plugs, each plug
its own module box and its own control
assigned. If the intermediate vessel from the preheating position
in the pouring position over the molds or
brought into a filling position near the pouring position, see above
the plug drive motor is started by means of
Claims (13)
- Device for regulating an inflow of metal from a casting vessel (2) with a stopper (5), which co-operates with a pouring nozzle (4), with a box (15), which is attached in a replaceable manner to the casting vessel (2) by clamping elements (16), in which box a guide device (10, 12) and an electromechanical drive (13 for the stopper (5) are disposed, and the drive (13) can be connected to a control unit (34) by means of electrical plug-and-socket connections (37), characterised in that the casting vessel is formed as a tundish (2) of a continuous steel casting plant, and that a computer control unit (34) is provided for the drive (13) for controlling the stopper movement according to a predetermined program and by means of a bath surface measuring device (7) of a continuous casting mould (3), the stopper movement from the beginning of casting can be controlled solely by the electric drive and electric signals, incipient disturbances can be recognised by identifying corresponding parameters and corrected accordingly by means of predetermined programs, a signal generator (33) for rapid detection of a power failure is associated in the power supply (32) for the drive (13), and that the signal generator (33) initiates an emergency closing movement in the case of a power failure via the computer control unit (34) and the powered drive (13).
- Device according to claim 1, characterised in that the modular box (15) can be closed so as to be dust-proof and can be subjected to an excess air pressure.
- Device according to claim 1 or 2, characterised in that the guide device for a stopper which can be raised and lowered consists of a lifting rod (10) and a guide (12).
- Device according to one of Claims 1 - 3, characterised in that the casting vessel consists of a tundish (2) for a multiple strand casting plant and is provided with 2 - 8 modular boxes (15).
- Device according to Claim 2, characterised in that the excess air pressure is built up by means of an air circulation system (23), and the air flows as cooling medium through the modular box (15) the lifting rod (10) and a stopper support arm (9).
- Device according to one of Claims 2 - 5, characterised in that there is an open air gap (20) between the wall (19) of the casting vessel (2) and the modular box (15).
- Device according to one of Claims 2 - 6, characterised in that a device (17) for suspensions from the casting vessel (2) and quick-action clamping elements (16) for rigid attachment are provided at the modular box (15).
- Device according to one of Claims 2 - 7, characterised in that the drive shaft (25) of the drive (13) and the lifting rod (10), together with its guide (12), are disposed parallel to one another in the modular box (15), and the drive (13) transmits the rotary movement directly to a ball screw drive (27, 28) and from the latter a lifting movement directly to the lifting rod (10).
- Device according to one of Claims 1 - 8, characterised in that a hand wheel (30) can be coupled to and uncoupled from a screw spindle (27) of the ball screw drive.
- Device according to Claim 1, characterised in that the power supply (32) for the drive (13) comprises capacitors whose capacitance is sufficient for a program-controlled emergency closing movement of the stopper (5) in the case of a power failure.
- Device according to one of Claims 1 - 10, characterised in that the vertical guide (12) of the lifting rod (10) consists of a ball-bearing longitudinal guide and its length L = 50 - 80 %, preferably 70 - 80 %, of the tundish height (39) (bottom - cover seat).
- Device according to one of Claims 1 - 11, characterised in that an emergency shutter (36) with a closure block is associated with the pouring nozzle (4).
- Device according to Claim 12, characterised in that the emergency shutter is provided with a piston-cylinder unit and with an accumulator for the actuating medium.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH870/95 | 1995-03-28 | ||
| CH00870/95A CH689728A5 (en) | 1995-03-28 | 1995-03-28 | Device for regulating an inflow of metal melt by means of a plug. |
| CH87095 | 1995-03-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0734801A1 EP0734801A1 (en) | 1996-10-02 |
| EP0734801B1 EP0734801B1 (en) | 1999-07-28 |
| EP0734801B2 true EP0734801B2 (en) | 2003-02-05 |
Family
ID=4197097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96104202A Expired - Lifetime EP0734801B2 (en) | 1995-03-28 | 1996-03-16 | Device for controlling an inflow of metal by means of a stopper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5674426A (en) |
| EP (1) | EP0734801B2 (en) |
| CA (1) | CA2172335C (en) |
| CH (1) | CH689728A5 (en) |
| DE (1) | DE59602511D1 (en) |
| ES (1) | ES2137580T5 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446704B1 (en) * | 1997-06-27 | 2002-09-10 | Richard J. Collins | Continuous casting mold plug activation and bleedout detection system |
| DE19843033B4 (en) * | 1998-09-19 | 2017-11-09 | Sms Group Gmbh | Breakthrough detection method for a continuous casting mold |
| FR2848131B1 (en) | 2002-12-04 | 2006-01-06 | Realisations Tech Sert Soc Et | CONTROL ASSEMBLY FOR A SHUTTER BELONGING TO A CONTINUOUS CASTING PLANT, AND CORRESPONDING CONTINUOUS CASTING INSTALLATION |
| US7296613B2 (en) | 2003-06-13 | 2007-11-20 | Wagstaff, Inc. | Mold table sensing and automation system |
| ITMI20042301A1 (en) * | 2004-11-30 | 2005-02-28 | Danieli Off Mecc | COMMAND DEVICE FOR A BUFFER AUCTION |
| DE102005024924B8 (en) * | 2005-05-23 | 2007-10-25 | Strikowestofen Gmbh | Melting or holding furnace |
| US20070120707A1 (en) * | 2005-11-29 | 2007-05-31 | Rv Insite, Inc. | Method for positioning recreational vehicles and portable position sensor and alert system for recreational vehicles and other vehicles |
| US8210402B2 (en) * | 2009-02-09 | 2012-07-03 | Ajf, Inc. | Slag control shape device with L-shape loading bracket |
| US8580186B2 (en) * | 2010-04-19 | 2013-11-12 | Novelis Inc. | Flow control apparatus for molten metal |
| EP2574414A1 (en) * | 2011-09-30 | 2013-04-03 | Siemens VAI Metals Technologies GmbH | Electromechanical stopper drive |
| AT518476B1 (en) * | 2016-04-12 | 2020-02-15 | Primetals Technologies Austria GmbH | Process for starting and stopping a multi-strand continuous casting machine, common plug drive and multi-strand continuous casting machine |
| EP3782748A1 (en) * | 2019-08-20 | 2021-02-24 | Refractory Intellectual Property GmbH & Co. KG | Drive device for a stopper in a metallurgical vessel |
| CN110961612A (en) * | 2019-12-31 | 2020-04-07 | 衡阳镭目科技有限责任公司 | Double-rod type stopper actuating device |
| AT17334U1 (en) * | 2020-08-26 | 2021-12-15 | Sheffield Hi Tech Refractories Germany Gmbh | Device for closing a casting tube of a metallurgical vessel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299255A (en) † | 1988-05-16 | 1990-04-11 | Nippon Steel Corp | Molten metal surface controller of continuous casting machine for thin steel sheet |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1139241B (en) * | 1960-08-23 | 1962-11-08 | Juenkerather Maschbau Gmbh | Actuating device for the plug of a pouring ladle |
| DE1180096B (en) * | 1962-03-31 | 1964-10-22 | Juenkerather Maschbau Gmbh | Actuating device for the plug of a pouring ladle |
| DE1458076A1 (en) * | 1963-03-25 | 1968-11-21 | Korthaus Helmut | Device for electromotive control of the stopper of a pouring ladle |
| DE8510920U1 (en) * | 1985-04-13 | 1986-08-07 | Ruhrgas Ag, 4300 Essen | Emergency slide for troughs in continuous casting plants |
| EP0296443A3 (en) * | 1987-06-22 | 1989-11-08 | Zimmermann & Jansen GmbH | Method and device for automatically filling a continuous casting mold |
| CH682376A5 (en) * | 1990-02-28 | 1993-09-15 | Stopinc Ag | A method for automatic casting of a continuous casting plant. |
| JPH04270049A (en) * | 1991-02-25 | 1992-09-25 | Sumitomo Metal Ind Ltd | Stopper device for continuous caster and controller for molten metal surface level |
| US5312090A (en) * | 1992-12-14 | 1994-05-17 | Cmi International | Apparatus and method for controlling a stopper rod of a bottom pouring vessel |
-
1995
- 1995-03-28 CH CH00870/95A patent/CH689728A5/en not_active IP Right Cessation
-
1996
- 1996-03-16 DE DE59602511T patent/DE59602511D1/en not_active Expired - Lifetime
- 1996-03-16 EP EP96104202A patent/EP0734801B2/en not_active Expired - Lifetime
- 1996-03-16 ES ES96104202T patent/ES2137580T5/en not_active Expired - Lifetime
- 1996-03-20 US US08/618,964 patent/US5674426A/en not_active Expired - Lifetime
- 1996-03-21 CA CA002172335A patent/CA2172335C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299255A (en) † | 1988-05-16 | 1990-04-11 | Nippon Steel Corp | Molten metal surface controller of continuous casting machine for thin steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2137580T3 (en) | 1999-12-16 |
| CH689728A5 (en) | 1999-09-30 |
| ES2137580T5 (en) | 2003-08-01 |
| US5674426A (en) | 1997-10-07 |
| EP0734801A1 (en) | 1996-10-02 |
| CA2172335C (en) | 2001-06-12 |
| EP0734801B1 (en) | 1999-07-28 |
| DE59602511D1 (en) | 1999-09-02 |
| CA2172335A1 (en) | 1996-09-29 |
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