EP0463203A1 - Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method - Google Patents

Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method Download PDF

Info

Publication number
EP0463203A1
EP0463203A1 EP90112051A EP90112051A EP0463203A1 EP 0463203 A1 EP0463203 A1 EP 0463203A1 EP 90112051 A EP90112051 A EP 90112051A EP 90112051 A EP90112051 A EP 90112051A EP 0463203 A1 EP0463203 A1 EP 0463203A1
Authority
EP
European Patent Office
Prior art keywords
speed
drives
rollers
roller
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90112051A
Other languages
German (de)
French (fr)
Other versions
EP0463203B1 (en
Inventor
Georg Dipl.-Ing. Geisthoff
Hans-Joachim Dipl.-Ing. Nitsche
Werner Dipl.-Ing. Engelhardt
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8204138&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0463203(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE59008603T priority Critical patent/DE59008603D1/en
Priority to ES90112051T priority patent/ES2069629T3/en
Priority to EP90112051A priority patent/EP0463203B1/en
Priority to AT90112051T priority patent/ATE119091T1/en
Publication of EP0463203A1 publication Critical patent/EP0463203A1/en
Application granted granted Critical
Publication of EP0463203B1 publication Critical patent/EP0463203B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • the invention relates to a guide method for the electrical drives of rollers in a continuous casting installation and to a device for carrying out the method.
  • the strand is pulled out of the mold and guided by means of driven rollers or roller pairs.
  • the individual rollers are driven electrically, with the drives being supplied with power via a busbar.
  • the drives are controlled via a common speed control.
  • Such a regulation is disadvantageous in that the individual rollers drive the strand to different degrees.
  • the reasons for this are e.g. Different roller diameters caused by wear or series variations of the drive motors or fluctuations in the strand thickness.
  • the different load absorption has a negative impact on the quality of the cast strand.
  • the object of the present invention is to provide a method for the individual control of the drives, wherein a load balance between the individual roller drives is to be achieved.
  • the drives should be precisely synchronized with respect to the peripheral speeds of the rollers.
  • the task is solved by a guiding method for the electric drives of rolls of a continuous caster, the train being pulled out of the mold of the continuous caster by the driven rolls, the drives of which are individually regulated, and the setpoint for the roll drives is dependent on the load.
  • the device for carrying out the method comprises an automation unit, e.g. a programmable logic controller, which is used to display the operating status with a display unit and to specify operating parameters, e.g. Casting speed setpoint and operating mode, is connected to an input unit and for the transmission of setpoints to the individual controllers of roller drives.
  • an automation unit e.g. a programmable logic controller
  • the individually controlled roller drives are advantageously speed-controlled, an additional speed setpoint being calculated for each roller drive from the difference between the actual current of the roller drive and the current mean value of the actual currents of the roller drives, with which a target speed calculated from the casting speed and the roller diameter is applied.
  • the FIG shows the basic structure of the drive control.
  • an automation unit 1 for example a programmable logic controller, is connected to a display unit 2. Furthermore, the automation unit 1 is connected to an input unit, not shown, from which setpoints are transmitted.
  • the setpoints include, for example, the casting speed v G , the casting length and the operating mode of the continuous casting installation.
  • the automation unit 1 is connected to the speed controllers 3, 4, 5 via a data bus 6, with which all speed controllers 3, 4, 5 are addressed, and via data lines 7, with which individual speed controllers 3, 4, 5 are addressed. Common information, for example characteristic curves, is transmitted via the data bus 6.
  • Each speed controller 3, 4, 5 controls a driving roller 8, the actual values, eg actual speed n actual current or list, are detected by an actual value.
  • Such data include the actual speed n, the actual current list, interference signal S, nson target speed or a enable / disable signal.
  • a fault is detected for example, when the actual speed n actual current list or reach unacceptable values.
  • the speed controllers 3, 4, 5 have means not shown, e.g. Infrared detectors, for detecting occupancy with a warm strand.
  • the speed controllers 3, 4, 5 individually control the drives 8 of rollers that pull the strand from the mold of the continuous casting plant.
  • the speed setpoints nson of the individual speed controllers 3, 4, 5 are guided by the automation unit 1, the setpoint for the roller drives 8 being dependent on the load. Only the drives 8 are controlled, the rollers of which guide the hot strand. It is assumed that a roller guides the hot extrusion, if the actual current list deviates the roller drive 8 during a preselected time period T from the idle current 1 0 by more than a preselectable fluctuation width I and / or if the roll onto the hot strand is pressed.
  • the rollers can be pressed so strongly against the hot strand that they plastically deform the strand, that is to say act as rollers.
  • the actual currents list are transmitted by the speed controllers 3, 4, 5 together with any faults that may have occurred.
  • the automation unit 1 calculates an average value Im from the actual currents list.
  • the difference between the actual current list and the current average value Im is then formed in the automation unit 1 for each regulated roller drive 8.
  • the actual current list is possibly reduced by an idle current 1 0 .
  • the difference calculated in this way is multiplied by a preselectable constant p.
  • the constant p typically has a value of 2 to 3. If the roll in question is registered as a hot strand, an additional speed setpoint n becomes as per the formula calculated.
  • n N and IN are the nominal speed and the nominal current of the roller drive 8. If the roller in question is registered as not carrying the heat, the additional speed setpoint is set to zero.
  • the additional speed setpoint n target is limited to a preselectable fraction, eg 3%, of the nominal speed n N.
  • a wear signal is displayed on the display unit 2 for this role.
  • N SOLL n to the target rotational speed with the target speed Va to n from the casting speed and the roll diameter d of the roll in question is determined is added.
  • a fault signal S is sent from the associated speed controller 3, 4 or 5 to the automation unit 1. This drive 8 is taken into account in the entire guidance described above, that is to say neither in the current averaging nor in the setpoint correction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • General Factory Administration (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

Guide method for the electric drives (8) of rollers of a continuous-casting plant, the strand being withdrawn from the continuous-casting mould by the driven rollers, the drives (8) of which are controlled individually, and the setpoint for the roller drives (8) being selected as a function of load. The installation for carrying out the method comprises an automation unit (1), e.g. a programmable controller, which is connected to a display unit (2) for the display of the operating condition, to an input unit for the input of operating parameters, e.g. casting rate setpoint (VG) and operating mode, and to the individual controllers (3, 4, 5) of roller drives (8) for the transmission of setpoints. <IMAGE>

Description

Die Erfindung betrifft ein Führungsverfahren für die elektrischen Antriebe von Rollen einer Stranggießanlage sowie eine Einrichtung zur Durchführung des Verfahrens.The invention relates to a guide method for the electrical drives of rollers in a continuous casting installation and to a device for carrying out the method.

Bei einer Stranggießanlage wird der Strang mittels angetriebener Rollen bzw. Rollenpaare aus der Kokille abgezogen und geführt. Die einzelnen Rollen werden elektrisch angetrieben, wobei die Stromversorgung der Antriebe über eine Sammelschiene erfolgt. Die Regelung der Antriebe erfolgt über eine gemeinsame Drehzahlregelung.In a continuous caster, the strand is pulled out of the mold and guided by means of driven rollers or roller pairs. The individual rollers are driven electrically, with the drives being supplied with power via a busbar. The drives are controlled via a common speed control.

Eine derartige Regelung ist insofern nachteilig, als die einzelnen Rollen den Strang unterschiedlich stark antreiben. Ursachen hierfür sind z.B. durch Verschleiß verursachte unterschiedliche Rollendurchmesser oder Serienstreuungen der Antriebsmotore oder Schwankungen in der Strangdicke. Die unterschiedliche Lastaufnahme hat negative Auswirkungen auf die Qualität des gegossenen Stranges.Such a regulation is disadvantageous in that the individual rollers drive the strand to different degrees. The reasons for this are e.g. Different roller diameters caused by wear or series variations of the drive motors or fluctuations in the strand thickness. The different load absorption has a negative impact on the quality of the cast strand.

Wenn z.B. in einem Motor durch eine Betriebsstörung ein Kurzschluß entsteht, wird die gesamte Stromversorgung kurzgeschlossen. Alle Antriebe fallen dann aus; der Strang kann nicht mehr abgezogen werden.If e.g. If an engine malfunctions due to a malfunction, the entire power supply is short-circuited. All drives then fail; the strand can no longer be removed.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur individuellen Regelung der Antriebe zur Verfügung zu stellen, wobei ein Lastausgleich zwischen den einzelnen Rollenantrieben erreicht werden soll.The object of the present invention is to provide a method for the individual control of the drives, wherein a load balance between the individual roller drives is to be achieved.

Darüber hinaus soll ein exakter Gleichlauf der Antriebe bezüglich der Umfangsgeschwindigkeiten der Rollen erreicht werden.In addition, the drives should be precisely synchronized with respect to the peripheral speeds of the rollers.

Weiterhin sollen bei Störung eines Antriebs ein Weiterbetrieb der anderen Antriebe möglich sein.Furthermore, if one drive malfunctions, it should be possible to continue operating the other drives.

Ferner soll eine gleichbleibende Qualität des gegossenen Strangs auch bei einer Änderung der Stahlgüte im Verbundguß erreicht werden.Furthermore, a constant quality of the cast strand should be achieved even if the steel quality in the composite casting is changed.

Die Aufgabe wird durch ein Führungsverfahren für die elektrischen Antriebe von Rollen einer Stranggießanlage gelöst, wobei der Strang durch die angetriebenen Rollen, deren Antriebe einzeln geregelt sind, aus der Kokille der Stranggießanlage abgezogen wird und wobei die Sollwertvorgabe für die Rollenantriebe lastabhängig erfolgt. Die Einrichtung zur Durchführung des Verfahrens umfaßt eine Automatisiereinheit, z.B. eine speicherprogrammierbare Steuerung, die zur Anzeige des Betriebszustandes mit einer Anzeigeeinheit und zur Vorgabe von Betriebsparametern, z.B. Gießgeschwindigkeits-Sollwert und Betriebsart, mit einer Eingabeeinheit sowie zur Übermittlung von Sollwerten mit den einzelnen Reglern von Rollenantrieben verbunden ist.The task is solved by a guiding method for the electric drives of rolls of a continuous caster, the train being pulled out of the mold of the continuous caster by the driven rolls, the drives of which are individually regulated, and the setpoint for the roll drives is dependent on the load. The device for carrying out the method comprises an automation unit, e.g. a programmable logic controller, which is used to display the operating status with a display unit and to specify operating parameters, e.g. Casting speed setpoint and operating mode, is connected to an input unit and for the transmission of setpoints to the individual controllers of roller drives.

Mit Vorteil sind die einzeln geregelten Rollenantriebe drehzahlgeregelt, wobei für jeden Rollenantrieb aus der Differenz des Iststromes des Rollenantriebes und des Strommittelwertes der Istströme der Rollenantriebe ein Drehzahl-Zusatzsollwert berechnet wird, mit dem eine aus der Gießgeschwindigkeit und dem Rollendurchmesser errechnete Solldrehzahl beaufschlagt wird.The individually controlled roller drives are advantageously speed-controlled, an additional speed setpoint being calculated for each roller drive from the difference between the actual current of the roller drive and the current mean value of the actual currents of the roller drives, with which a target speed calculated from the casting speed and the roller diameter is applied.

Vorteilhaft werden nur die Antriebe der den Warmstrang führenden Rollen geregelt.Only the drives of the rollers guiding the hot strand are advantageously regulated.

Störungen einzelner Antriebe werden detektiert und gemeldet, worauf diese Antriebe bei dem Führungsverfahren nicht mehr berücksichtigt werden.Malfunctions of individual drives are detected and reported, whereupon these drives are no longer taken into account in the guidance process.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels, anhand der Zeichnungen und in Verbindung mit den weiteren Unteransprüchen.Further advantages and details emerge from the following description of an exemplary embodiment, using the drawings and in conjunction with the further subclaims.

Die FIG zeigt den Prinzipaufbau der Antriebsregelung.The FIG shows the basic structure of the drive control.

Gemäß der FIG ist eine Automatisiereinheit 1, z.B. eine speicherprogrammierbare Steuerung, mit einer Anzeigeeinheit 2 verbunden. Des weiteren ist die Automatisiereinheit 1 mit einer nicht dargestellten Eingabeeinheit verbunden, von der Sollwerte übermittelt werden. Die Sollwerte umfassen z.B. die Gießgeschwindigkeit vG, die Gießlänge und die Betriebsart der Stranggießanlege. Darüber hinaus ist die Automatisiereinheit 1 über einen Datenbus 6, mit dem alle Drehzahlregler 3, 4, 5 angesprochen werden, sowie über Datenleitungen 7, mit denen einzelne Drehzahlregler 3, 4, 5 angesprochen werden, mit den Drehzahlreglern 3, 4, 5 verbunden. Über den Datenbus 6 werden gemeinsame Informationen, z.B. Kennlinien, übertragen.According to the FIG, an automation unit 1, for example a programmable logic controller, is connected to a display unit 2. Furthermore, the automation unit 1 is connected to an input unit, not shown, from which setpoints are transmitted. The setpoints include, for example, the casting speed v G , the casting length and the operating mode of the continuous casting installation. In addition, the automation unit 1 is connected to the speed controllers 3, 4, 5 via a data bus 6, with which all speed controllers 3, 4, 5 are addressed, and via data lines 7, with which individual speed controllers 3, 4, 5 are addressed. Common information, for example characteristic curves, is transmitted via the data bus 6.

Jeder Drehzahlregler 3, 4, 5 regelt einen Rollenantrieb 8, dessen Istwerte, z.B. Istdrehzahl nist oder Iststrom list, von einem Istwertgeber 9 erfaßt werden.Each speed controller 3, 4, 5 controls a driving roller 8, the actual values, eg actual speed n actual current or list, are detected by an actual value. 9

Über die Datenleitungen 7 werden nur einzelne Regler 3, 4, 5 betreffende Daten übertragen. Derartige Daten sind z.B. Istdrehzahl nist, Iststrom list, Störungssignal S, Solldrehzahl nson oder ein Aktivierungs-/Deaktivierungssignal. Eine Störung wird z.B. detektiert, wenn Istdrehzahl nist oder Iststrom list unzulässige Werte erreichen.Only individual controllers 3, 4, 5 relating to data are transmitted via the data lines 7. Such data include the actual speed n, the actual current list, interference signal S, nson target speed or a enable / disable signal. A fault is detected for example, when the actual speed n actual current list or reach unacceptable values.

Darüber hinaus weisen die Drehzahlregler 3, 4, 5 nicht dargestellte Mittel, z.B. Infrarotdetektoren, zum Detektieren der Belegung mit Warmstrang auf.In addition, the speed controllers 3, 4, 5 have means not shown, e.g. Infrared detectors, for detecting occupancy with a warm strand.

Die Drehzahlregler 3, 4, 5 regeln einzeln die Antriebe 8 von Rollen, die den Strang aus der Kokille der Stranggießanlage abziehen. Die Drehzahlsollwerte nson der einzelnen Drehzahlregler 3, 4, 5 werden durch die Automatisiereinheit 1 geführt, wobei die Sollwertvorgabe für die Rollenantriebe 8 lastabhängig erfolgt. Dabei werden nur die Antriebe 8 geregelt, deren Rollen den Warmstrang führen. Es wird angenommen, daß eine Rolle den Warmstrang führt, wenn der Iststrom list des Rollenantriebs 8 während einer vorwählbaren Zeitspanne T vom Leerlaufstrom 10 um mehr als eine vorwählbare Schwankungsbreite I abweicht und/oder wenn die Rolle auf den Warmstrang angepreßt ist. Die Rollen können dabei so stark an den Warmstrang angepreßt sein, daß sie den Strang plastisch verformen, also als Walzen wirken.The speed controllers 3, 4, 5 individually control the drives 8 of rollers that pull the strand from the mold of the continuous casting plant. The speed setpoints nson of the individual speed controllers 3, 4, 5 are guided by the automation unit 1, the setpoint for the roller drives 8 being dependent on the load. Only the drives 8 are controlled, the rollers of which guide the hot strand. It is assumed that a roller guides the hot extrusion, if the actual current list deviates the roller drive 8 during a preselected time period T from the idle current 1 0 by more than a preselectable fluctuation width I and / or if the roll onto the hot strand is pressed. The rollers can be pressed so strongly against the hot strand that they plastically deform the strand, that is to say act as rollers.

Die Istströme list werden von den Drehzahlreglern 3, 4, 5 zusammen mit eventuell aufgetretenen Störungen übermittelt. Die Automatisiereinheit 1 berechnet aus den Istströmen list einen Mittelwert Im. Sodann werden in der Automatisiereinheit 1 für jeden geregelten Rollenantrieb 8 die Differenz aus Iststrom list und Strommittelwert Im gebildet. Der Iststrom list wird dabei gegebenenfalls um einen Leerlaufstrom 10 vermindert. Die so errechnete Differenz wird mit einer vorwählbaren Konstante p multipliziert. Die Konstante p hat typisch einen Wert von 2 bis 3. Wenn die betreffende Rolle als warmstrangführend registriert ist, wird ein Drehzahl-Zusatzsollwert nso gemäß der Formel

Figure imgb0001
berechnet. nN und IN sind dabei Nenndrehzahl und Nennstrom des Rollenantriebs 8. Wenn die betreffende Rolle als nicht warmstrangführend registriert ist, wird der Drehzahl-Zusatzsollwert gleich Null gesetzt. Falls nötig wird der Drehzahl-Zusatzsollwert nsoll auf einen vorwählbaren Bruchteil, z.B. 3 %, der Nenndrehzahl nN begrenzt. Durch Vergleich des begrenzten Drehzahl-Zusatzsollwerts nsoll mit dem Wert vor der Begrenzung wird festgestellt, ob eine Begrenzung nötig war. Wenn ja, wird für diese Rolle ein Verschleißsignal auf der Anzeigeeinheit 2 angezeigt. Der Drehzahl-Zusatzsollwert nsoll wird zur Solldrehzahl nsoll addiert, wobei die Solldrehzahl nsoll aus der Gießgeschwindigkeit vα und dem Rollendurchmesser d der betreffenden Rolle ermittelt wird.The actual currents list are transmitted by the speed controllers 3, 4, 5 together with any faults that may have occurred. The automation unit 1 calculates an average value Im from the actual currents list. The difference between the actual current list and the current average value Im is then formed in the automation unit 1 for each regulated roller drive 8. The actual current list is possibly reduced by an idle current 1 0 . The difference calculated in this way is multiplied by a preselectable constant p. The constant p typically has a value of 2 to 3. If the roll in question is registered as a hot strand, an additional speed setpoint n becomes as per the formula
Figure imgb0001
 calculated. n N and IN are the nominal speed and the nominal current of the roller drive 8. If the roller in question is registered as not carrying the heat, the additional speed setpoint is set to zero. If necessary, the additional speed setpoint n target is limited to a preselectable fraction, eg 3%, of the nominal speed n N. By comparing the limited additional speed setpoint n should with the value before the limitation, it is determined whether a limitation was necessary. If so, a wear signal is displayed on the display unit 2 for this role. To the rotational speed addition value N SOLL n to the target rotational speed with the target speed Va to n from the casting speed and the roll diameter d of the roll in question is determined is added.

Wenn ein Rollenantrieb 8 gestört ist, wird ein Störungssignal S vom zugehörigen Drehzahlregler 3, 4 oder 5 an die Automatisiereinheit 1 gesendet. Dieser Antrieb 8 wird bei der gesamten vorstehend beschriebenen Führung, also weder bei der Strommittelwertbildung noch bei der Sollwertkorrektur, berücksichtigt.If a roller drive 8 is faulty, a fault signal S is sent from the associated speed controller 3, 4 or 5 to the automation unit 1. This drive 8 is taken into account in the entire guidance described above, that is to say neither in the current averaging nor in the setpoint correction.

Claims (13)

1. Führungsverfahren für die elektrischen Antriebe (8) von Rollen einer Stranggießanlage, wobei der Strang durch die angetriebenen Rollen, deren Antriebe (8) einzeln geregelt sind, aus der Kokille der Stranggießanlage abgezogen wird und wobei die Sollwertvorgabe für die Rollenantriebe (8) lastabhängig erfolgt.1. Guiding method for the electric drives (8) of rollers of a continuous casting installation, the strand being pulled by the driven rollers, the drives (8) of which are individually regulated, from the mold of the continuous casting installation and the setpoint specification for the roller drives (8) depending on the load he follows. 2. Führungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die einzeln geregelten Rollenantriebe (8) drehzahlgeregelt sind, wobei für jeden Rollenantrieb (8) aus der Differenz des Iststromes (Iist)des Rollenantriebes (8) und des Strommittelwertes (Im) der Istströme (Iist) der Rollenantriebe (8) ein Drehzahl-Zusatzsollwert ( nsoll) berechnet wird, mit dem eine aus der Gießgeschwindigkeit (vG) und dem Rollendurchmesser (d) errechnete, Solldrehzahl (nsoll) beaufschlagt wird.2. Guiding method according to claim 1, characterized in that the individually controlled roller drives (8) are speed-controlled, wherein for each roller drive (8) from the difference of the actual current (I ist ) of the roller drive (8) and the average current value (Im) of the actual currents (I ist) of the roller drives (8) (to n) a speed additional setpoint value is calculated with the one of the casting speed (v G) and the roller diameter (d) calculated (to n) target rotational speed is applied. 3. Führungsverfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Drehzahl-Zusatzsollwert ( nsoll) proportional zur Differenz des Iststromes (Iist) und des Strommittelwertes (Im) ist.3. guidance method according to claim 2, characterized in that (to n) that the additional setpoint speed proportional to the difference of the actual current (I ist) and the mean current value (Im) is. 4. Führungsverfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Mittelwertbildung und die Differenzbildung mit um Leerlaufströme (10) verminderten Istströmen (Iist) erfolgt.4. Management method according to claim 2 or 3, characterized in that the averaging and the difference formation with idle currents (1 0 ) reduced actual currents (I is ). 5. Führungsverfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß nur die Antriebe (8) der den Warmstrang führenden Rollen geregelt werden.5. Guiding method according to one or more of claims 1 to 4, characterized in that only the drives (8) of the rollers leading the hot strand are regulated. 6. Führungsverfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Belegung eines Rollenantriebs (8) mit dem Warmstrang dadurch detektiert wird, daß der Istrom (Iist) des Rollenantriebs (8) während einer vorwählbaren Zeitspanne (T) vom Leerlaufstrom (10) um mehr als eine vorwählbare Schwankungsbreite ( I) abweicht.6. Guiding method according to one or more of claims 1 to 5, characterized in that the occupancy of a roller drive (8) with the hot strand is detected in that the current (I is ) of the roller drive (8) during a preselectable period (T) deviates from the no-load current (1 0 ) by more than a preselectable fluctuation range (I). 7. Führungsverfahren nach einem oder mehreren der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß bei Störung eines Rollenantriebs (8) dieser Rollenantrieb (8) bei der Berechnung des Strommittelwertes (Im) nicht berücksichtigt wird.7. Guiding method according to one or more of claims 2 to 6, characterized in that in the event of a malfunction of a roller drive (8) this roller drive (8) is not taken into account in the calculation of the mean current value (Im). 8. Führungsverfahren nach einem oder mehreren der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß ein Verschleiß der Rollen detektiert wird, wenn der berechnete Drehzahl-Zusatzsollwert ( nsoll) einen vorwählbaren Bruchteil der Solldrehzahl (nsoll) übersteigt, wobei der wirksame Drehzahl-Zusatzsollwert ( nsoll) auf diesen vorwählbaren Bruchteil der Solldrehzahl (nsoll) begrenzt wird.8. Guide method according to one or more of claims 2 to 7, characterized in that wear of the rollers is detected if the calculated rotational speed additional set value (target n) (target n) a preselectable fraction of the desired speed exceeds the effective speed (to n) (target n) additional setpoint to this preselectable fraction of the desired speed is limited. 9. Einrichtung zur Durchführung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 8, wobei eine Automatisiereinheit (1), z.B. eine speicherprogrammierbare Steuerung, zur Anzeige des Betriebszustandes mit einer Anzeigeeinheit (2) und zur Vorgabe von Betriebsparametern, z.B. Gießgeschwindigkeits-Sollwert (vG) und Betriebsart, mit einer Eingabeeinheit sowie zur Übermittlung von Sollwerten mit den einzelnen Reglern (3, 4, 5) von Rollenantrieben (8) verbunden ist.9. Device for carrying out the method according to one or more of claims 1 to 8, wherein an automation unit (1), for example a programmable logic controller, for displaying the operating state with an on display unit (2) and for specifying operating parameters, for example casting speed setpoint (v G ) and operating mode, with an input unit and for transmitting setpoints with the individual controllers (3, 4, 5) of roller drives (8). 10. Einrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Rollenantriebe (8) Mittel zum Erfassen von Betriebsstörungen aufweisen.10. The device according to claim 9, characterized in that the roller drives (8) have means for detecting malfunctions. 11. Einrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Rollenantriebe (8) Mittel zum Erfassen der Anwesenheit des Warmstranges aufweisen.11. The device according to claim 9 or 10, characterized in that the roller drives (8) have means for detecting the presence of the warm strand. 12. Einrichtung nach Anspruch 9, 10 oder 11, dadurch gekennzeichnet, daß die einzelnen Regler (3, 4, 5) Drehzahlregler (3, 4, 5) sind.12. The device according to claim 9, 10 or 11, characterized in that the individual controllers (3, 4, 5) are speed controllers (3, 4, 5). 13. Einrichtung nach einem oder mehreren der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß die Rollen den Strang plastisch verformen, also als Walzen wirken.13. Device according to one or more of claims 9 to 12, characterized in that the rollers plastically deform the strand, that is to say act as rollers.
EP90112051A 1990-06-25 1990-06-25 Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method Revoked EP0463203B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59008603T DE59008603D1 (en) 1990-06-25 1990-06-25 Guide method for the electrical drives of rolls of a continuous casting plant and device for carrying out the method.
ES90112051T ES2069629T3 (en) 1990-06-25 1990-06-25 GUIDING PROCEDURE FOR ELECTRIC ROLLER DRIVES OF A CONTINUOUS CAST IRON INSTALLATION AND INSTALLATION FOR THE PROCEDURE.
EP90112051A EP0463203B1 (en) 1990-06-25 1990-06-25 Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method
AT90112051T ATE119091T1 (en) 1990-06-25 1990-06-25 GUIDANCE METHOD FOR THE ELECTRICAL DRIVES OF ROLLERS OF A CONTINUOUS CASTING PLANT AND DEVICE FOR IMPLEMENTING THE METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90112051A EP0463203B1 (en) 1990-06-25 1990-06-25 Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method

Publications (2)

Publication Number Publication Date
EP0463203A1 true EP0463203A1 (en) 1992-01-02
EP0463203B1 EP0463203B1 (en) 1995-03-01

Family

ID=8204138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112051A Revoked EP0463203B1 (en) 1990-06-25 1990-06-25 Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method

Country Status (4)

Country Link
EP (1) EP0463203B1 (en)
AT (1) ATE119091T1 (en)
DE (1) DE59008603D1 (en)
ES (1) ES2069629T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689046A1 (en) * 1992-03-26 1993-10-01 Lorraine Laminage Real time control of geometric and mechanical deviations - used in support system of continuous casting installation
DE4226499A1 (en) * 1992-08-11 1994-02-17 Voss Armaturen Ceramic slide valve of three-plate type esp. for compressed air - has fixed outer plates sealed off from housing by preformed oval lipped sealing rings which seal with light uniform force under all pressures
WO2008090121A1 (en) * 2007-01-22 2008-07-31 Siemens Aktiengesellschaft Method for guiding a cast material out of a casting chamber of a casting system, and casting system for casting a cast material

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 416 (M-759)(3263), 4. November 1988; & JP - A - 63154252 (KOBE STEEL) 27.06.1988 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 64 (M-285)(1501), 27. März 1984; & JP - A - 58215258 (KAWASAKI) 14.12.1983 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 264 (M-423)(1987), 22. Oktober 1985; & JP - A - 60111752 (KAWASAKI) 18.06.1985 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689046A1 (en) * 1992-03-26 1993-10-01 Lorraine Laminage Real time control of geometric and mechanical deviations - used in support system of continuous casting installation
DE4226499A1 (en) * 1992-08-11 1994-02-17 Voss Armaturen Ceramic slide valve of three-plate type esp. for compressed air - has fixed outer plates sealed off from housing by preformed oval lipped sealing rings which seal with light uniform force under all pressures
DE4226499C2 (en) * 1992-08-11 2000-07-13 Voss Armaturen Ceramic slide valve
WO2008090121A1 (en) * 2007-01-22 2008-07-31 Siemens Aktiengesellschaft Method for guiding a cast material out of a casting chamber of a casting system, and casting system for casting a cast material
US7987896B2 (en) 2007-01-22 2011-08-02 Siemens Aktiengesellschaft Method for guiding a cast material out of a casting chamber of a casting system, and casting system for casting a cast material
CN101588881B (en) * 2007-01-22 2012-06-20 西门子公司 Method for guiding a cast material out of a casting chamber of a casting system, and casting system for casting a cast material and control system

Also Published As

Publication number Publication date
ES2069629T3 (en) 1995-05-16
DE59008603D1 (en) 1995-04-06
EP0463203B1 (en) 1995-03-01
ATE119091T1 (en) 1995-03-15

Similar Documents

Publication Publication Date Title
DE2932783C2 (en) Agitator ball mill control
DE4321963A1 (en) Hot strip rolling train control - comprising setting roller surface speeds in neighbouring stand pairs to cancel out internal mass flow variations
DE4105321A1 (en) CONTROL OF A HOT AND / OR COLD ROLLING PROCESS
DE2241032B2 (en) Switching of electrical drives in a multi-roller continuous caster
DE4243045A1 (en) Controller form cold strip rolling system - matches stage roller forces, roller speed and strip tension to achieve constant strip thickness, with low axial force on strip
DE4003548C2 (en) Loop lifter control device for continuous rolling mills
EP0463203A1 (en) Guide method for electrical inputs of rollers in a continuous casting plant and installation for carrying out this method
DE1126492B (en) Device for controlling the strip thickness in continuous hot rolling mills
EP2268427B1 (en) Operating method for a cold-rolling line with improved dynamics
WO1995024281A1 (en) Rolling mill, in particular cold rolling mill
DE1116308B (en) Electric speed control for a rolling mill with at least three rolling stands each driven by a motor
EP1314491A1 (en) Method of operating a stretch-reducing mill and stretch-reducing mill
DE2650287C2 (en) Drafting device for slivers
DE19851531B4 (en) Caterpillar take-off, especially for an extrusion machine
EP0340756A1 (en) Method and device for monitoring the levelling of at least one sliver in a controlled drafting arrangement
DE4113746C1 (en) Operating installation for winding extruded material - using winding station with electric motor controlled by signal determined by material flow rate
EP2149628B1 (en) Autodrafter with electric brake and method of converting an autodrafter for low-maintenance operation
DE2638267C3 (en) Strip tension control device on a continuous annealing plant
DE19881709B4 (en) Method for cutting a metal strip that runs out of a hot rolling line, and device for carrying out the method
CH669054A5 (en) ARRANGEMENT FOR THE AUTOMATED CONTROL, BALANCE SHEET AND DIAGNOSIS OF BAND OR FILM ROLLING PROCESSES.
DE19726586A1 (en) Method and device for reducing or compensating for speed drops when threading a rolling stock into a roll stand
DE1284922B (en) Process for readjusting roll stands in continuous rolling lines, especially in medium-steel lines
EP0005450A2 (en) Arrangement for treating the pass line height variations in a continuous rolling mill
DE10126220C2 (en) Method and device for operating a wire rolling mill
EP0012992B1 (en) Multiblock wire-drawing machine

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901205

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES

17Q First examination report despatched

Effective date: 19930824

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES

REF Corresponds to:

Ref document number: 119091

Country of ref document: AT

Date of ref document: 19950315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59008603

Country of ref document: DE

Date of ref document: 19950406

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2069629

Country of ref document: ES

Kind code of ref document: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH

Effective date: 19951130

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

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

Ref country code: AT

Payment date: 19990521

Year of fee payment: 10

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

Ref country code: ES

Payment date: 19990622

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19990624

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19990820

Year of fee payment: 10

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20000202

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO