EP1358955A1 - Verfahren und Einrichtung zum Erkennen des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung in Stranggiessanlagen für flüssige Metalle, insbesondere für flüssigen Stahl - Google Patents
Verfahren und Einrichtung zum Erkennen des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung in Stranggiessanlagen für flüssige Metalle, insbesondere für flüssigen Stahl Download PDFInfo
- Publication number
- EP1358955A1 EP1358955A1 EP03005200A EP03005200A EP1358955A1 EP 1358955 A1 EP1358955 A1 EP 1358955A1 EP 03005200 A EP03005200 A EP 03005200A EP 03005200 A EP03005200 A EP 03005200A EP 1358955 A1 EP1358955 A1 EP 1358955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- characteristic curve
- oscillation
- characteristic
- cylinder
- continuous casting
- 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
Links
- 230000010355 oscillation Effects 0.000 title claims abstract description 54
- 238000009749 continuous casting Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 title claims abstract description 8
- 239000010959 steel Substances 0.000 title claims abstract description 8
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 13
- 230000000712 assembly Effects 0.000 title claims description 8
- 238000000429 assembly Methods 0.000 title claims description 8
- 230000008859 change Effects 0.000 claims description 19
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract 1
- 238000003745 diagnosis Methods 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage 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
- B22D11/166—Controlling or regulating processes or operations for mould oscillation
Definitions
- the invention relates to a method and a device for recognizing the machine state of elements or assemblies of an oscillation device in Continuous casting plants for liquid metals, in particular for liquid steel, with a continuous casting mold mounted on a lifting table, the lifting table being connected via a or periodically open and open several oscillation drives in a resilient guide is moved.
- the lifting table with the continuous casting mold can be used with spring systems can be equipped as a guide or as a load compensation device.
- the drive of the system consists of mechanical eccentric gears or from hydraulic oscillation drives, i.e. from piston-cylinder units that over Electronic control systems are regulated or controlled, the control systems essentially a dynamic position setpoint setting for generation a required periodic movement of the mold oscillation Provide in the foundry.
- a lifting table with an oscillation drive for a continuous casting machine is from DE 100 33 656 A1 known.
- the pressure in the hydraulic fluid is continuously measured here and the pressure values over the work surfaces of several piston-cylinder units are converted into a fill level in the mold.
- the invention is based on the object, the intended operational functions to check whether the course of the periodic movements of the lifting table with the continuous casting mold due to normal working elements or assemblies the oscillation device takes place or whether individual elements or assemblies do not work properly and therefore the sequence of movements distort.
- the object is achieved in that step by step or continuous changes in position of the oscillation drive a characteristic for the good condition is recorded and that this is then with the respective State in operation corresponding characteristic is compared. This can result in a detection the state of the entire oscillation device take place.
- the recorded Characteristic is in the idle state of the system and thus in new condition generated. When comparing this good state with the characteristic in the operating state deviations are immediately visible that the operator understands easily and, if necessary, can take immediate action.
- This diagnosis can be made without a local Viewing or even the expansion of components.
- the diagnosis can also be carried out with changed oscillation values.
- In the first record is essentially the given operating window (in relation drive through to the oscillation stroke movements) e.g. + / - 8 mm, based on a given starting situation.
- the characteristic curve is in each case a function the distance traveled and the current force of the oscillation drive is recorded. This recording can then be made in the control and diagnostic system of the oscillation drive can be saved.
- the characteristic curve from the respective chamber pressures in the cylinder one or more hydraulic piston-cylinder drives as oscillation drives is formed.
- average values can be calculated for all drives be formed.
- the designs can be based on the respective drive concept adjusted according to the number of piston-cylinder units.
- the data recording is provided as well as a graphical or numerical representation in the control and diagnostic system of the oscillation drive is made.
- the further processing of the recorded Values can be used directly as control values for pressure control be used.
- the characteristic curve is generated cyclically. This can make a historical Characteristic changes can be easily determined. It can also be done at the same time the archiving take place.
- the advantage here is that between a change in the spring characteristic the resilient guide and a deformation or inclination change and one A distinction is made between increasing the base load and changing the level.
- the Determination of the given or changed spring stiffness can also cause undesired collisions, e.g. molding residues in the oscillation device, which cause an additional load or changes in the drive system.
- Another possibility of monitoring is that when the spring break is detected the resilient leadership or if a maximum force or a If the oscillation drive falls below a minimum force, it is automatically switched off becomes.
- the required limit values can correspond to the given oscillation system be determined.
- the invention allows the operator an optimal basic setting or utilization the oscillation device. For this purpose, it is provided that a visualized characteristic curve and thus based on the utilization of the spring Execution of load compensation a good state of the oscillation characteristic is set. In comparison to the theoretically determined data (spring constants and weight forces), the optimal basic setting can be determined. In particular In the case of multi-cylinder arrangements, corresponding basic settings can be made have the same load distribution as the goal (distribution of the forces to all connected Cylinder) can be carried out in a simplified manner.
- the device-based solution to the task is based on a device for detection the machine state of elements or assemblies of an oscillation device in continuous casting plants for liquid metals, especially for liquid steel, from, with a continuous casting mold mounted on a lifting table, the lifting table can be oscillated in one resilient guide via one or more oscillation drives is.
- the object is achieved according to the invention in that a characteristic curve for the good condition via a hydraulic pressure measurement using pressure sensors each on the cylinder of the oscillation drive or in the pressure lines is. For this, the calculation of the current one can be made at the output of the pressure measurement Force from two measuring points.
- the characteristic curve is gradual or continuous Change the position of the piston in the cylinder by means of a control and Diagnostic system can be run through automatically.
- the call of such a function can be done automatically during the pause or by pressing the operator's key.
- the data recorded for the creation of the characteristic curves can be represented as an image and / or can be archived.
- control and diagnostic system for transferring a valve control value via a hydraulic valve and the pressure lines is connected to the cylinder.
- setpoints for the control and diagnostic system can be generated as a continuous specification or step-by-step specification.
- the oscillation device 1 is an oscillation device 1 in a continuous caster for liquid Steel provided with a continuous casting mold mounted on a lifting table 2 3.
- the lifting table 2 is one, two or four oscillation drives 4 in one Leaf spring assemblies existing spring guide 5 periodically moved up and down, to release the solidifying casting strand from the continuous casting mold 3.
- the resilient Guide 5 can also be used for load compensation.
- the oscillation drives 4 consist in the embodiment of hydraulic piston-cylinder drives 4a with piston 4b.
- the regulation or control of the oscillation drives 4 takes place via electronic Control systems that are essentially a dynamic position setpoint adjustment for the generation of a desired periodic movement of the Effect mold oscillation for the casting operation.
- the characteristic curve 7 can in each case as a function of the distance traveled 10 and the current one Force 11 of the oscillation drive 4 are recorded.
- the characteristic curve 7 becomes one from the respective pressure 12a and 12b in the cylinder 13 or a plurality of hydraulic piston-cylinder drives 4a.
- This technical data record 14 (Fig. 2), as well as a graphic or numerical Representation 15 is in a control and diagnostic system 16 of the oscillation drive 4 filed. Since the characteristic curves 7; 9 generated cyclically finds a permanent one Monitoring the machine condition instead. In doing so, one determined in operation Characteristic curve 9 compared to the good state 8 by determining an incline or level change 17 as a change in level 19 of characteristic curve 9 and be recognized as a change in deformation or inclination. Likewise, an inclination 20 of the characteristic curve 9 can be recognized as a change in level.
- the characteristic curve 7 for the good state 8 is determined via a hydraulic pressure measurement 22 by means of pressure sensors 23 in each case on the cylinder spaces in front of and behind the piston 4b of the oscillation drive 4 or in the pressure lines 24. at gradual change 29 or continuous change 28 of position 6 of the piston 4b in the cylinder 13, the formation of the characteristic curves 7; 9 by means of the regulation and Drive through diagnosis system 16 automatically (cf. "Setpoints for diagnosis 27 "in FIG. 2).
- the data 14 recorded for the generation of the characteristic curves 7; 9 are each shown as image 25 and can be saved in parallel. When archiving the data 14 for the characteristic curves 7; 9 can be used in the continuous caster Control and diagnostic system 16 are used.
- the control and diagnostic system 16 is used to transmit a valve control value 26 via a hydraulic valve 22a (two-way valve) and the pressure lines 24 to the Cylinder 13 connected.
- the setpoints 27 for the control and diagnostic system 16 can be generated as a continuous specification 28 or as a step specification 29 become.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Fluid-Pressure Circuits (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
Description
- Fig. 1
- ein Blockschaltbild der Oszillationsvorrichtung in Verbindung mit dem Regel- und Diagnose-System und
- Fig. 2
- das System der ermittelten Kennlinie, der Sollwerte für die Diagnose in Verbindung mit der Oszillationsvorrichtung als Blockschaltbild.
- 1
- Oszillationsvorrichtung
- 2
- Hubtisch
- 3
- Stranggießkokille
- 4
- Oszillations-Antrieb
- 4a
- hydraulischer Kolben-Zylinder-Antrieb
- 4b
- Kolben
- 5
- federnde Führung
- 6
- Positionsänderung
- 7
- Kennlinie
- 8
- Gut-Zustand
- 9
- Betriebs-Kennlinie
- 10
- zurückgelegter Weg
- 11
- momentane Kraft
- 12a
- Kammer - Druck im Zylinder
- 12b
- Kammer - Druck im Zylinder
- 13
- Zylinder
- 14
- datentechnische Aufzeichnung
- 15
- grafische oder numerische Darstellung
- 16
- Regel- und Diagnose-System
- 17
- Steigungs- oder Niveau-Änderung
- 18
- Feder-Kennlinie
- 19
- Verformungs- oder Neigungs-Änderung
- 20
- Niveau-Änderung
- 21
- Erhöhung der Grundlast
- 22
- hydraulische Druckmessung
- 22a
- Hydraulikventil
- 23
- Drucksensoren
- 24
- Druckleitung
- 25
- Bild-Darstellung
- 26
- Ventilstellwert
- 27
- Sollwert
- 28
- kontinuierliche Vorgabe
- 29
- schrittweise Vorgabe
Claims (17)
- Verfahren zum Erkennen des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung (1) in Stranggießanlagen für flüssige Metalle, insbesondere für flüssigen Stahl, mit einer auf einem Hubtisch (2) gelagerten Stranggießkokille (3), wobei der Hubtisch (2) über einen oder mehrere Oszillationsantriebe (4) in einer federnden Führung (5) periodisch aufund abbewegt wird,
dadurch gekennzeichnet, dass über schrittweise oder kontinuierliche Positionsänderungen (6) des Oszillationsantriebs (4) eine Kennlinie (7) für den Gut-Zustand (8) aufgezeichnet wird und dass diese danach mit einer dem jeweiligen Zustand im Betrieb entsprechenden Kennlinie (9) verglichen wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Kennlinie (7) jeweils als Funktion des zurückgelegten Wegs (10) und der momentanen Kraft (11) des Oszillationsantriebs (4) aufgezeichnet wird. - Verfahren nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass die Kennlinie (7) aus den jeweiligen Kammer - Drücken (12a; 12b) im Zylinder (13) eines oder mehrerer hydraulischen Kolben-Zylinder-Antriebe (4a) als Oszillationsantrieb (4) gebildet wird. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die datentechnische Aufzeichnung (14) sowie eine grafische oder numerische Darstellung (15) im Regel- und Diagnose-System (16) des Oszillationsantriebs (4) vorgenommen wird. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Kennlinie (7; 9) zyklisch erzeugt wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die Kennlinie (7; 9) während einer Gießpause in der Stranggießanlage aufgezeichnet wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass eine im Betrieb ermittelte Kennlinie (9) gegenüber dem Gut-Zustand (8) durch Feststellen einer Steigungs- oder Niveau-Änderung (17) einer etwa sinusförmigen Kennlinie (7) ausgewertet wird. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass zwischen einer Änderung der Feder-Kennlinie (18) der federnden Führung (5) und einer Verformungs- oder Neigungs-Änderung (19) und einer Erhöhung der Grundlast (21) und einer Niveau-Änderung (20) unterschieden wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass bei erkanntem Federbruch der federnden Führung (5) oder bei Überschreitung einer Maximalkraft oder einer Unterschreitung einer Minimalkraft der Oszillationsantrieb (4) automatisch abgeschaltet wird. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass anhand der Lage einer visualisierten Kennlinie (7; 9) und somit anhand der Ausnutzung der durch die federnde Führung (5) ausgeführten Lastkompensation ein Gut-Zustand (8) der Oszillations- Kennlinie (7) eingestellt wird. - Einrichtung zur Erkennung des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung (1) in Stranggießanlagen für flüssige Metalle, insbesondere für flüssigen Stahl, mit einer auf einem Hubtisch (2) gelagerten Stranggießkokille (3), wobei der Hubtisch (2) über einen oder mehrere Oszillationsantriebe (4) in einer federnden Führung oszillierbar ist,
dadurch gekennzeichnet, dass eine Kennlinie (7) für den Gut-Zustand (8) über eine hydraulische Druckmessung (22) mittels Drucksensoren (23) jeweils am Zylinder (13) des Oszillationsantriebs (4) oder in den Druckleitungen (24) aufnehmbar ist. - Einrichtung nach Anspruch 11,
dadurch gekennzeichnet, dass die Kennlinie (7; 9) bei schrittweiser oder kontinuierlicher Veränderung der Position (6) des Kolbens (4b) im Zylinder (13) mittels eines Regel- und Diagnose-Systems (16) automatisch durchfahrbar ist. - Einrichtung nach einem der Ansprüche 11 oder 12,
dadurch gekennzeichnet, dass die für die Erstellung der Kennlinien (7; 9) aufgezeichneten Daten (14) als Bild (25) darstellbar und / oder archivierbar sind. - Einrichtung nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, dass für die Archivierung der Daten (14) für die Kennlinie (7; 9) das in der Stranggießanlage verwendete Regel- und Diagnose-System (16) einsetzbar ist. - Einrichtung nach einem der Ansprüche11 bis 13,
dadurch gekennzeichnet, dass für die Archivierung der Daten (14) für die Kennlinien (7; 9) ein externes Datenaufzeichnungs-System einsetzbar ist. - Einrichtung nach einem der Ansprüche 11 bis 15,
dadurch gekennzeichnet, dass das Regel- und Diagnose-System (16) zur Übertragung eines Ventilstellwertes (26) über ein Hydraulikventil (22a) und die Druckleitungen (24) an den Zylinder (13) angeschlossen ist. - Einrichtung nach einem der Ansprüche 11 bis 17,
dadurch gekennzeichnet, dass die Sollwerte (27) für das Regel- und Diagnose-System (16) als kontinuierliche Vorgabe (28) oder schrittweise Vorgabe (29) generierbar sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10219287 | 2002-04-30 | ||
DE10219287A DE10219287A1 (de) | 2002-04-30 | 2002-04-30 | Verfahren und Einrichtung zum Erkennen des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung in Stranggießanlagen für flüssige Metalle, insbesondere für flüssigen Stahl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1358955A1 true EP1358955A1 (de) | 2003-11-05 |
EP1358955B1 EP1358955B1 (de) | 2008-07-09 |
Family
ID=28798935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03005200A Expired - Lifetime EP1358955B1 (de) | 2002-04-30 | 2003-03-08 | Verfahren und Einrichtung zum Erkennen des Maschinenzustandes von Elementen oder Baugruppen einer Oszillationsvorrichtung in Stranggiessanlagen für flüssige Metalle, insbesondere für flüssigen Stahl |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1358955B1 (de) |
AT (1) | ATE400380T1 (de) |
DE (2) | DE10219287A1 (de) |
ES (1) | ES2306820T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008006189A1 (de) | 2008-01-26 | 2009-07-30 | Sms Demag Ag | Einrichtung und Verfahren zum Regeln von Kokillenoszillationen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014202404A1 (de) | 2014-02-11 | 2015-08-13 | Sms Siemag Ag | Oszillationseinrichtung für eine Stranggießkokille und diverse Prüfverfahren |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515316C1 (de) * | 1995-04-19 | 1996-08-29 | Mannesmann Ag | Verfahren zum Betreiben einer Kokille |
EP0992302A1 (de) * | 1998-10-02 | 2000-04-12 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur kontinuierlichen Kontrolle der Grundeinstellung und Oszillationsparameter einer Stranggiesskokille |
DE10033656A1 (de) * | 2000-07-11 | 2002-01-24 | Sms Demag Ag | Verfahren und Stranggießvorrichtung mit einer Einrichtung zum Messen des Kokillenfüllstandes für flüssiges Metall, insbesondere für flüssigen Stahl |
WO2002070172A1 (de) * | 2001-03-02 | 2002-09-12 | Sms Demag Aktiengesellschaft | Verfahren zum ermitteln von kenndaten eines oszillationssystems einer oszillierenden stranggiesskokille |
-
2002
- 2002-04-30 DE DE10219287A patent/DE10219287A1/de not_active Withdrawn
-
2003
- 2003-03-08 ES ES03005200T patent/ES2306820T3/es not_active Expired - Lifetime
- 2003-03-08 AT AT03005200T patent/ATE400380T1/de not_active IP Right Cessation
- 2003-03-08 EP EP03005200A patent/EP1358955B1/de not_active Expired - Lifetime
- 2003-03-08 DE DE50310094T patent/DE50310094D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515316C1 (de) * | 1995-04-19 | 1996-08-29 | Mannesmann Ag | Verfahren zum Betreiben einer Kokille |
EP0992302A1 (de) * | 1998-10-02 | 2000-04-12 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur kontinuierlichen Kontrolle der Grundeinstellung und Oszillationsparameter einer Stranggiesskokille |
DE10033656A1 (de) * | 2000-07-11 | 2002-01-24 | Sms Demag Ag | Verfahren und Stranggießvorrichtung mit einer Einrichtung zum Messen des Kokillenfüllstandes für flüssiges Metall, insbesondere für flüssigen Stahl |
WO2002070172A1 (de) * | 2001-03-02 | 2002-09-12 | Sms Demag Aktiengesellschaft | Verfahren zum ermitteln von kenndaten eines oszillationssystems einer oszillierenden stranggiesskokille |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008006189A1 (de) | 2008-01-26 | 2009-07-30 | Sms Demag Ag | Einrichtung und Verfahren zum Regeln von Kokillenoszillationen |
Also Published As
Publication number | Publication date |
---|---|
EP1358955B1 (de) | 2008-07-09 |
DE50310094D1 (de) | 2008-08-21 |
ES2306820T3 (es) | 2008-11-16 |
DE10219287A1 (de) | 2003-11-13 |
ATE400380T1 (de) | 2008-07-15 |
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