EP1249288A2 - Process and device for controlling the driving forces in continuous casting machines - Google Patents
Process and device for controlling the driving forces in continuous casting machines Download PDFInfo
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- EP1249288A2 EP1249288A2 EP02006261A EP02006261A EP1249288A2 EP 1249288 A2 EP1249288 A2 EP 1249288A2 EP 02006261 A EP02006261 A EP 02006261A EP 02006261 A EP02006261 A EP 02006261A EP 1249288 A2 EP1249288 A2 EP 1249288A2
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- strand
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- driving force
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000009749 continuous casting Methods 0.000 title claims description 8
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 241001620634 Roger Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- 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
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
Definitions
- the invention relates to a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a continuous caster, and a suitable device and its use.
- the strands produced are from the mold to supported and guided at least for solidification in a roller corset. Separate Rolls within or behind this strand guide section become Overcoming the pull-out resistance which the strand passes through on its way the roller guide is driven.
- the performance of these drives will generally dimensioned so that, on the one hand, in every conceivable operating situation a safe discharge of the strand is guaranteed, but on the other hand the Manufacturing costs are kept as low as possible and the drives are not unnecessarily oversized become.
- Knowing the upcoming pull-out force, usually to overcome the pull-out resistance is required can be used for the evaluation of the operational Processes of a continuous caster are used.
- DE 29 23 900 C2 describes a method for preventing breakthroughs of the strand in continuous casting plants known, with changes in the strand and the operating parameters of the continuous caster and measured with a limit value be compared, whereupon a signal for a countermeasure is exceeded is produced.
- Below the mold are the first segment of the strand guide the force changes in the pull-out forces caused by mechanical resistance measured and for a change in the casting process or its Termination used. The changes in force are measured using pressure cells or strain gauges.
- the present invention is based on the object, changes in Detecting and analyzing the driving forces of strand drives at an early stage determine their causes and take measures for a forward-looking, timely protection of the system against excessive wear resulting in a prolonged failure, for which in particular that occurring in the casting direction mechanical resistance of the segments against the driving forces shall be.
- the problem is solved with a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a Continuous caster with the invention proposed that a maximum allowable Driving force for conveying the strand is specified, and that single driving forces measured a number of segments, the sum of the individual forces are calculated, compared with the maximum permissible driving force, and if they are exceeded, the system is shut down or switched off becomes.
- the maximum is the maximum permissible driving force permissible phase resistance and under the individual driving force the individual resistance Roger that.
- the force measurement for example, initially using pressure cells is carried out without strand in the caster and subsequently during of the foundry, further measurements are made, the Differences in the force measurements indicate the existing pull-out forces.
- a method according to the invention is further characterized by its use to determine the maximum permissible individual or total driving forces and checking the specified operating parameters.
- the invention provides that for an individual Segment the maximum permissible driving force and with the current driving force until the maximum permissible driving force (resistance) is controlled. In addition, increases in driving force are prevented by the system.
- the maximum permissible driving force is specified with the current driving force compared and if they are exceeded, this is reduced until they at least match.
- a device for controlling the driving forces of strand guide segments when conveying a cast strand from a continuous caster, in particular for carrying out the method according to the invention is characterized in that that to detect the driving forces of a segment on or in the consoles of the load cell segment (pressure or load cells) or inclinometer are arranged, which are supported on support bearings of the strand guide frame.
- the use of the device according to the invention is particularly suitable for optimal format setting of the cast product or for optimal setting of the Roller conveyors, to prevent deformation on the strand guide frame and / or on the segment due to overload, further to limit the maximum Driving force of string drives and for monitoring the state of the Strand guide.
- Figures 1 and 2 show the cast strand 1, which by the rollers 2 with their bearings 3 according to FIG. 1 in a vertical plane, and according to Fig. 2 is performed in a horizontal plane.
- the bearings 3 of the rollers 2 are attached to frames 4 and 5, which in turn are support with brackets 6 on the outer supporting structures 8 of the scaffolding.
- Load cells 7 are arranged between the supports 6 and 8, which record the contact force of the segments directly and precisely.
- the contact force of the segments can be caused by deformation of the support brackets 6, 8, for example by means of inclinometers 9.
- the pull-out force of the strand 1 in the casting direction is the strand guide segments on a number of support points of the device broadcast directly.
- a total force is generated corresponding to the sections the strand guide segments, being in the area of vertical guidance the pull-out force of a strand guide element in the casting direction according to FIG. 1 works, whereas in the case of sheet continuous casting plants, a corresponding angle in the further evaluation and arrangement of the measuring technology is to be considered.
- the measurement method used is subject to the requirements of Strand guide segments installed a force measurement or an inclination measurement.
- the force measurement with the pressure load cells is on the corresponding Construction units made immediately. It is without force shunts installed between the contact surfaces.
- the measurement can be taken on all four Points can be done, but it can also be on two or even one Limit point.
- the conversion of the measured variable can be done accordingly the geometric conditions or the position of the main force axis be converted accordingly.
- the measurements are initially carried out without load, i.e. without casting strand in the casting plant carried out. During the casting operation there will be more Measurements made. The difference in the force measurements then give the upcoming pull-out forces.
- an inclination measurement is made, for example, using an inclinometer on the substructure of the support points of the strand guide segments performed.
- the inclination measurement gives the deformation of the substructure depending on the forthcoming discharge force.
- the measurement of Normal inclination takes place during the casting break, i.e. without hot strand in the continuous caster. Measurements in the casting shop are used to determine the pull-out force used.
- the inclination values are converted into a pull-out force with corresponding design-dependent conversion factors.
- the invention is particularly suitable for monitoring the pull-out forces in the casting operation.
- the invention enables active machine protection in the event of overload, e.g. if the strand shell breaks. With the help of the invention Monitoring the pull-out forces protects the system from destruction.
- the String drives can be limited in their performance. A specified maximum force the strand guide elements are monitored and switches in the further Control logic automatically switches off the line drives during the start-up process. All in all can with the help of the monitoring method according to the invention the design criteria the continuous casting system is checked during operation and at any time become.
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Abstract
Description
Die Erfindung betrifft ein Verfahren zur Kontrolle der Antriebskräfte von Strangführungssegmenten beim Ausfördern eines Gußstranges aus einer Stranggießanlage, sowie eine hierfür geeignete Vorrichtung und deren Verwendung.The invention relates to a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a continuous caster, and a suitable device and its use.
In Stranggießanlagen, insbesondere zum Gießen von Brammen, Dünnbrammen, Vorblöcken oder Beam Blanks, werden die erzeugten Stränge von der Kokille bis mindestens zur Durcherstarrung in einem Rollenkorsett gestützt und geführt. Einzelne Rollen innerhalb dieser Strangführungsstrecke oder hinter ihr werden zur Überwindung der Ausziehwiderstände, welchen der Strang auf seinem Weg durch die Rollenführung unterworfen ist, angetrieben. Die Leistung dieser Antriebe wird im allgemeinen so bemessen, dass einerseits bei jeder denkbaren Betriebssituation ein sicheres Ausfördern des Stranges gewährleistet ist, andererseits aber die Herstellkosten möglichst niedrig gehalten und die Antriebe nicht unnötig überdimensioniert werden.In continuous casting plants, in particular for casting slabs, thin slabs, Preblocks or beam blanks, the strands produced are from the mold to supported and guided at least for solidification in a roller corset. Separate Rolls within or behind this strand guide section become Overcoming the pull-out resistance which the strand passes through on its way the roller guide is driven. The performance of these drives will generally dimensioned so that, on the one hand, in every conceivable operating situation a safe discharge of the strand is guaranteed, but on the other hand the Manufacturing costs are kept as low as possible and the drives are not unnecessarily oversized become.
Die Kenntnis der anstehenden Ausziehkraft, die üblicherweise zur Überwindung der Ausziehwiderstände erforderlich ist, kann für die Auswertung der betriebstechnischen Abläufe einer Stranggießanlage genutzt werden.Knowing the upcoming pull-out force, usually to overcome the pull-out resistance is required can be used for the evaluation of the operational Processes of a continuous caster are used.
Aus der DE 29 23 900 C2 ist ein Verfahren zum Verhindern von Durchbrüchen des Stranges in Stranggießanlagen bekannt, wobei Änderungen des Stranges und der Betriebsgrößen der Stranggießanlage gemessen und mit einem Grenzwert verglichen werden, worauf bei Überschreitung ein Signal für eine Gegenmaßnahme erzeugt wird. Unterhalb der Kokille werden am ersten Segment der Strangführung die durch mechanische Widerstände verursachten Kraftänderungen der Ausziehkräfte gemessen und für eine Veränderung des Gießprozesses oder dessen Beendigung herangezogen. Die Kraftänderungen werden mittels Druckmeßdosen oder Dehnungsmeßstreifen gemessen.DE 29 23 900 C2 describes a method for preventing breakthroughs of the strand in continuous casting plants known, with changes in the strand and the operating parameters of the continuous caster and measured with a limit value be compared, whereupon a signal for a countermeasure is exceeded is produced. Below the mold are the first segment of the strand guide the force changes in the pull-out forces caused by mechanical resistance measured and for a change in the casting process or its Termination used. The changes in force are measured using pressure cells or strain gauges.
Der vorliegenden Erfindung liegt nunmehr die Aufgabe zugrunde, Änderungen der Antriebskräfte von Strangantrieben frühzeitig zu erkennen und zu analysieren, dabei ihre Ursachen zu ermitteln und Maßnahmen für einen vorausschauenden, rechtzeitigen Schutz der Anlage vor übermäßigem Verschleiß mit der Folge eines längeren Ausfalls zu veranlassen, wofür insbesondere der in Gießrichtung auftretende mechanische Widerstand der Segmente gegen die Antriebskräfte genutzt werden soll.The present invention is based on the object, changes in Detecting and analyzing the driving forces of strand drives at an early stage determine their causes and take measures for a forward-looking, timely protection of the system against excessive wear resulting in a prolonged failure, for which in particular that occurring in the casting direction mechanical resistance of the segments against the driving forces shall be.
Die Lösung der Aufgabe wird bei einem Verfahren zur Kontrolle der Antriebskräfte von Strangführungssegmenten beim Ausfördern eines Gußstranges aus einer Stranggießanlage mit der Erfindung vorgeschlagen, dass eine höchstzulässige Antriebskraft zum Ausfördern des Stranges vorgegeben wird, und dass Einzel-Antriebskräfte einer Anzahl von Segmenten gemessen, daraus die Summe der einzelnen Kräfte errechnet wird, diese mit der höchstzulässigen Antriebskraft verglichen, und bei deren Überschreitung die Anlage zurückgefahren oder abgeschaltet wird. Dabei wird unter der höchstzulässigen Antriebskraft der maximal zulässige Strangwiderstand und unter der Einzel-Antriebskraft der Einzelwiderstand verstanden.The problem is solved with a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a Continuous caster with the invention proposed that a maximum allowable Driving force for conveying the strand is specified, and that single driving forces measured a number of segments, the sum of the individual forces are calculated, compared with the maximum permissible driving force, and if they are exceeded, the system is shut down or switched off becomes. The maximum is the maximum permissible driving force permissible phase resistance and under the individual driving force the individual resistance Roger that.
In Fortbildung des erfindungsgemäßen Verfahrens ist vorgesehen, dass bei Senkrecht-Stranggießanlagen die Kräftemessung bspw. mittels Druckmeßdosen zunächst ohne Strang in der Gießanlage durchgeführt wird und nachfolgend während des Gießbetriebes weitere Messungen vorgenommen werden, wobei die Differenzen der Kraftmessungen die anstehenden Ausziehkräfte angeben. In a development of the method according to the invention it is provided that in vertical continuous casting plants the force measurement, for example, initially using pressure cells is carried out without strand in the caster and subsequently during of the foundry, further measurements are made, the Differences in the force measurements indicate the existing pull-out forces.
In einer ausgestaltenden Variante des erfindungsgemäßen Verfahrens ist vorgesehen, daß bei Bogen- und Senkrechtanlagen bspw. mittels Inklinometer zunächst die Normalneigung ohne Strang gemessen wird und nachfolgend weitere Neigungsmessungen während des Gießbetriebes durchgeführt werden und dass die Differenzen der Neigungswerte über konstruktionsbedingte Umrechnungsfaktoren bedingt durch Verformung der konstruktiven Trageeinrichtung durch Krafteinwirkung, die anstehenden Ausziehkräfte angeben.In an embodiment of the inventive method, that initially with arch and vertical systems, for example using an inclinometer the normal inclination is measured without a strand and then further inclination measurements be carried out during the casting operation and that the Differences in the slope values using design-related conversion factors due to deformation of the structural support device due to the action of force, specify the upcoming pull-out forces.
In Fortbildung des erfindungsgemäßen Verfahrens wird vorgeschlagen, dass beim Rückführen der Antriebskräfte die Gießgeschwindigkeit reduziert wird.In a development of the method according to the invention it is proposed that the Returning the driving forces the casting speed is reduced.
Ein Verfahren nach der Erfindung ist weiterhin gekennzeichnet durch dessen Verwendung zur Ermittlung der höchstzulässigen Einzel- oder Summen-Antriebskräfte und Überprüfung der vorgegebenen Betriebsparameter.A method according to the invention is further characterized by its use to determine the maximum permissible individual or total driving forces and checking the specified operating parameters.
Durch die Anpassung der Betriebsdaten an die höchstzulässigen Antriebskräfte wird zugleich ein optimaler Betriebszustand eingeregelt, der ein maximales Ausbringen des Gußproduktes ohne schädliche Überlastung der Stranggießanlage ermöglicht.By adapting the operating data to the maximum permissible driving forces At the same time, an optimal operating state is set, which ensures maximum output of the cast product without damaging the continuous caster allows.
Zu diesem Zweck ist erfindungsgemäß vorgesehen sein, dass für ein einzelnes Segment die höchstzulässige Antriebskraft vorgegeben und mit der aktuellen Antriebskraft so lange verglichen wird, bis die höchstzulässige Antriebskraft (Widerstand) ausgesteuert ist. Darüber hinaus gehende Steigerungen der Antriebskraft werden systemtechnisch verhindert.For this purpose, the invention provides that for an individual Segment the maximum permissible driving force and with the current driving force until the maximum permissible driving force (resistance) is controlled. In addition, increases in driving force are prevented by the system.
Dabei kann mit Vorteil auch so vorgegangen werden, dass für ein einzelnes Segment die höchstzulässige Antriebskraft vorgegeben, mit der aktuellen Antriebskraft verglichen und bei deren Überschreitung diese so weit zurückgeführt wird, bis sie zumindest übereinstimmen. It can also be advantageously used for a single segment the maximum permissible driving force is specified with the current driving force compared and if they are exceeded, this is reduced until they at least match.
Eine Vorrichtung zur Kontrolle der Antriebskräfte von Strangführungssegmenten beim Ausfördern eines Gußstranges aus einer Stranggießanlage, insbesondere zur Durchführung des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, daß zum Erfassen der Antriebskräfte eines Segments an oder in den Konsolen des Segmentes Wägezellen (Druck- oder Kraftmeßzellen) oder Neigungsmesser angeordnet sind, welche sich an Stützlagern des Strangführungsgerüstes abstützen.A device for controlling the driving forces of strand guide segments when conveying a cast strand from a continuous caster, in particular for carrying out the method according to the invention is characterized in that that to detect the driving forces of a segment on or in the consoles of the load cell segment (pressure or load cells) or inclinometer are arranged, which are supported on support bearings of the strand guide frame.
Die Verwendung der erfindungsgemäßen Vorrichtung ist besonders geeignet zur optimalen Formateinstellung des Gußproduktes bzw. zur optimalen Einstellung der Rollenbahnen, zum Verhindern von Verformungen am Strangführungsgerüst und/oder am Segment durch Überlastung, ferner zur Begrenzung der maximalen Antriebskraft von Strangantrieben sowie zur Überwachung des Zustandes der Strangführung.The use of the device according to the invention is particularly suitable for optimal format setting of the cast product or for optimal setting of the Roller conveyors, to prevent deformation on the strand guide frame and / or on the segment due to overload, further to limit the maximum Driving force of string drives and for monitoring the state of the Strand guide.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispieles. Es zeigen:
Figur 1- in Ansicht ein Strangführungssegment der vertikalen Strangführung unterhalb der Kokille;
Figur 2- das Strangführungssegment gemäß Fig. 1 im Schnitt einer zum Gußstrang senkrechten Ebene.
- Figure 1
- in view a strand guide segment of the vertical strand guide below the mold;
- Figure 2
- 1 in section on a plane perpendicular to the cast strand.
Die Zusammenschau der Figuren 1 und 2 zeigt den Gußstrang 1, welcher durch
die Rollen 2 mit ihren Lagern 3 gemäß Fig. 1 in einer vertikalen Ebene, und gemäß
Fig. 2 in einer horizontalen Ebene geführt wird. The overview of Figures 1 and 2 shows the
Die Lager 3 der Rollen 2 sind auf Rahmen 4 und 5 befestigt, welche sich ihrerseits
mit Konsolen 6 auf den äußeren Tragkonstruktionen 8 des Stützgerüstes abstützen.
Zwischen den Auflagern 6 und 8 sind Kraftmeßdosen 7 angeordnet, welche
die Auflagekraft der Segmente unmittelbar und exakt erfassen.The bearings 3 of the
Alternativ kann die Auflagekraft der Segmente über eine Verformung der Auflagerkonsolen
6, 8 bspw. mittels Neigungsmessern 9, erfaßt werden.Alternatively, the contact force of the segments can be caused by deformation of the
Bei dem Meßverfahren wird die Ausziehkraft des Stranges 1 in Gießrichtung von
den Strangführungssegmenten auf eine Anzahl von Auflagepunkte der Vorrichtung
direkt übertragen. Hierbei bildet sich eine Summenkraft entsprechend den Teilstrecken
der Strangführungssegmente, wobei im Bereich der Senkrechtführung
die Ausziehkraft eines Strangführungselementes in Gießrichtung gemäß Fig. 1
wirkt, wogegen bei Bogen-Stranggießanlagen ein entsprechender Winkel in der
weiteren Auswertung und Anordnung der Meßtechnik zu berücksichtigen ist.In the measuring process, the pull-out force of the
Bei der zur Anwendung gelangenden Meßmethode wird unter den Auflagen der Strangführungssegmente eine Kraftmessung oder eine Neigungsmessung installiert. Die Kraftmessung mit den Druckmeßdosen wird an den entsprechenden Konstruktionseinheiten unmittelbar vorgenommen. Sie wird ohne Kraftnebenschlüsse zwischen den Auflageflächen installiert.The measurement method used is subject to the requirements of Strand guide segments installed a force measurement or an inclination measurement. The force measurement with the pressure load cells is on the corresponding Construction units made immediately. It is without force shunts installed between the contact surfaces.
Bei einer Vier-Punkt-Auflage eines Segmentes kann die Messung an allen vier Punkten durchgeführt werden, sie kann sich aber auch auf zwei oder sogar einen Punkt beschränken. Dabei kann die Umrechnung der erfaßten Meßgröße entsprechend den geometrischen Bedingungen bzw. entsprechend der Lage der Hauptkraftachse entsprechend umgerechnet werden.With a four-point support of one segment, the measurement can be taken on all four Points can be done, but it can also be on two or even one Limit point. The conversion of the measured variable can be done accordingly the geometric conditions or the position of the main force axis be converted accordingly.
Die Messungen werden zunächst ohne Last, d.h. ohne Gießstrang in der Gießanlage durchgeführt. Während des Gießbetriebes werden entsprechend weitere Messungen vorgenommen. Die Differenz der Kraftmessungen geben dann die anstehenden Ausziehkräfte an.The measurements are initially carried out without load, i.e. without casting strand in the casting plant carried out. During the casting operation there will be more Measurements made. The difference in the force measurements then give the upcoming pull-out forces.
Bei einer zweiten Meßmethode wird eine Neigungsmessung bspw. über Inklinometer an den Unterbaukonstruktionen der Auflagepunkte der Strangführungssegmente vorgenommen. Die Neigungsmessung gibt die Verformung der Unterbaukonstruktion in Abhängigkeit der anstehenden Ausförderkraft an. Die Messung der Normalneigung erfolgt in der Gießpause, d.h. ohne Warmstrang in der Stranggießanlage. Messungen im Gießbetrieb werden für die Ermittlung der Ausziehkraft verwendet. Die Umrechnung der Neigungswerte in einer Ausziehkraft erfolgt mit entsprechenden konstruktionsabhängigen Umrechnungsfaktoren.In a second measurement method, an inclination measurement is made, for example, using an inclinometer on the substructure of the support points of the strand guide segments performed. The inclination measurement gives the deformation of the substructure depending on the forthcoming discharge force. The measurement of Normal inclination takes place during the casting break, i.e. without hot strand in the continuous caster. Measurements in the casting shop are used to determine the pull-out force used. The inclination values are converted into a pull-out force with corresponding design-dependent conversion factors.
Die Erfindung eignet sich besonders zur Überwachung der Ausziehkräfte im Gießbetrieb. Die Erfindung ermöglicht einen aktiven Maschinenschutz bei Überlastfällen, z.B. bei einem Durchbruch der Strangschale. Mit Hilfe der erfindungsgemäßen Überwachung der Ausziehkräfte wird die Anlage vor Zerstörung geschützt. Die Strangantriebe können in ihrer Leistung begrenzt werden. Eine festgelegte Maximalkraft der Strangführungselemente wird überwacht und schaltet in der weiteren Steuerungslogik die Strangantriebe bei dem Anfahrvorgang automatisch ab. Insgesamt kann mit Hilfe der erfindungsgemäßen Überwachungsmethode die Auslegungskriterien der Stranggußanlage während des Betriebes und jederzeit überprüft werden.The invention is particularly suitable for monitoring the pull-out forces in the casting operation. The invention enables active machine protection in the event of overload, e.g. if the strand shell breaks. With the help of the invention Monitoring the pull-out forces protects the system from destruction. The String drives can be limited in their performance. A specified maximum force the strand guide elements are monitored and switches in the further Control logic automatically switches off the line drives during the start-up process. All in all can with the help of the monitoring method according to the invention the design criteria the continuous casting system is checked during operation and at any time become.
Claims (9)
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet, dass bei Senkrecht-Stranggießanlagen die Kräftemessung bspw. mittels Druckmeßdosen zunächst ohne Strang in der Gießanlage durchgeführt wird und nachfolgend während des Gießbetriebes weitere Messungen vorgenommen werden, wobei die Differenzen der Kraftmessungen die anstehenden Ausziehkräfte angeben.Method according to claim 1,
characterized in that, in the case of vertical continuous casting plants, the force measurement, for example by means of pressure load cells, is initially carried out without a strand in the casting plant and subsequently further measurements are carried out during the casting operation, the differences in the force measurements indicating the pulling forces which are present.
dadurch gekennzeichnet, dass mittels Inklinometer zunächst die Normalneigung ohne Strang gemessen wird und nachfolgend weitere Neigungsmessungen während des Gießbetriebes durchgeführt werden und dass die Differenzen der Neigungswerte über konstruktionsbedingte Umrechnungsfaktoren die anstehenden Ausziehkräfte angeben.Method according to claim 1,
characterized in that the inclination is first used to measure the normal inclination without a strand and then further inclination measurements are carried out during the casting operation, and that the differences in the inclination values indicate the forthcoming pull-out forces via design-related conversion factors.
dadurch gekennzeichnet, dass beim Rückführen der Antriebskräfte die Gießgeschwindigkeit reduziert wird.Method according to one or more of claims 1 to 3,
characterized in that the casting speed is reduced when the driving forces are returned.
gekennzeichnet durch
dessen Verwendung zur Ermittlung der höchstzulässigen Einzel- oder Summen-Antriebskräfte und Überprüfung der vorgegebenen Betriebsparameter.Method according to one or more of claims 1 to 4,
marked by
its use to determine the maximum permissible individual or total driving forces and to check the specified operating parameters.
dadurch gekennzeichnet, dass für ein einzelnes Segment die höchstzulässige Antriebskraft vorgegeben und mit der aktuellen Antriebskraft so lange verglichen wird, bis die höchstzulässige Antriebskraft bzw. Widerstand ausgesteuert ist.Method according to one or more of claims 1 to 5,
characterized in that the maximum permissible driving force is specified for a single segment and is compared with the current driving force until the maximum permissible driving force or resistance is controlled.
dadurch gekennzeichnet, dass für ein einzelnes Segment die höchstzulässige Antriebskraft vorgegeben, mit der aktuellen Einzel-Antriebskraft verglichen, und bei deren Überschreitung diese so weit rückgeführt wird, dass sie zumindest übereinstimmen. Method according to one or more of claims 1 to 6,
characterized in that the maximum permissible driving force is specified for a single segment, compared with the current individual driving force, and if it is exceeded, this is reduced so far that they at least match.
dadurch gekennzeichnet, dass zur Erfassung der Antriebskräfte eines Segmentes an oder in den Konsolen (6) Wägezellen (7), insbesondere Druck- oder Kraftmesszellen oder Neigungsmesser (9) angeordnet sind, welche sich an Stützlagern (8) des Strangführungsgerüstes abstützen.Device for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a continuous casting installation, in particular for carrying out the method according to the preceding claims 1 to 7,
characterized in that load cells (7), in particular pressure or force measuring cells or inclinometers (9), which are supported on support bearings (8) of the strand guide frame, are arranged on or in the brackets (6) for detecting the driving forces of a segment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10118097A DE10118097A1 (en) | 2001-04-11 | 2001-04-11 | Method and device for controlling the driving forces in continuous casting plants |
| DE10118097 | 2001-04-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1249288A2 true EP1249288A2 (en) | 2002-10-16 |
| EP1249288A3 EP1249288A3 (en) | 2002-12-18 |
| EP1249288B1 EP1249288B1 (en) | 2004-10-06 |
Family
ID=7681239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02006261A Expired - Lifetime EP1249288B1 (en) | 2001-04-11 | 2002-03-20 | Process for controlling the driving forces in continuous casting machines |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1249288B1 (en) |
| AT (1) | ATE278491T1 (en) |
| DE (2) | DE10118097A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089895A1 (en) * | 2008-01-18 | 2009-07-23 | Sms Siemag Ag | Overload monitoring of strand guiding elements |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2923900A1 (en) * | 1979-06-13 | 1981-02-05 | Hoesch Estel Werke Ag | Early warning of impending continuous casting breakouts - by load sensors in critical zone below mould |
| JPH03254343A (en) * | 1990-03-05 | 1991-11-13 | Nisshin Steel Co Ltd | Method for measuring bulging rate and method for restraining bulge in continuous casting machine |
| EP1125657A2 (en) * | 2000-02-19 | 2001-08-22 | SMS Demag AG | Method and device for casting preforms in a continuous casting machine |
| EP1193007A1 (en) * | 2000-09-13 | 2002-04-03 | SMS Demag AG | Process and device for determining the position of the crater end in a cast strand during continuous metal casting, especially of steel |
-
2001
- 2001-04-11 DE DE10118097A patent/DE10118097A1/en not_active Withdrawn
-
2002
- 2002-03-20 EP EP02006261A patent/EP1249288B1/en not_active Expired - Lifetime
- 2002-03-20 AT AT02006261T patent/ATE278491T1/en not_active IP Right Cessation
- 2002-03-20 DE DE50201188T patent/DE50201188D1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2923900A1 (en) * | 1979-06-13 | 1981-02-05 | Hoesch Estel Werke Ag | Early warning of impending continuous casting breakouts - by load sensors in critical zone below mould |
| JPH03254343A (en) * | 1990-03-05 | 1991-11-13 | Nisshin Steel Co Ltd | Method for measuring bulging rate and method for restraining bulge in continuous casting machine |
| EP1125657A2 (en) * | 2000-02-19 | 2001-08-22 | SMS Demag AG | Method and device for casting preforms in a continuous casting machine |
| EP1193007A1 (en) * | 2000-09-13 | 2002-04-03 | SMS Demag AG | Process and device for determining the position of the crater end in a cast strand during continuous metal casting, especially of steel |
Non-Patent Citations (2)
| Title |
|---|
| DATABASE WPI Section Ch, Week 197729 Derwent Publications Ltd., London, GB; Class M22, AN 1977-51563Y XP002216576 & SU 538 811 A (KUROEDOV V D), 6. Januar 1976 (1976-01-06) * |
| PATENT ABSTRACTS OF JAPAN vol. 016, no. 057 (M-1210), 13. Februar 1992 (1992-02-13) -& JP 03 254343 A (NISSHIN STEEL CO LTD), 13. November 1991 (1991-11-13) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089895A1 (en) * | 2008-01-18 | 2009-07-23 | Sms Siemag Ag | Overload monitoring of strand guiding elements |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50201188D1 (en) | 2004-11-11 |
| ATE278491T1 (en) | 2004-10-15 |
| EP1249288A3 (en) | 2002-12-18 |
| EP1249288B1 (en) | 2004-10-06 |
| DE10118097A1 (en) | 2002-10-17 |
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