EP0902734B1 - Dispositif d'ajustement pour ajuster la position d'elements supports de barres de coulee - Google Patents

Dispositif d'ajustement pour ajuster la position d'elements supports de barres de coulee Download PDF

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Publication number
EP0902734B1
EP0902734B1 EP97920445A EP97920445A EP0902734B1 EP 0902734 B1 EP0902734 B1 EP 0902734B1 EP 97920445 A EP97920445 A EP 97920445A EP 97920445 A EP97920445 A EP 97920445A EP 0902734 B1 EP0902734 B1 EP 0902734B1
Authority
EP
European Patent Office
Prior art keywords
strand
hydraulic
cylinder
supporting element
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97920445A
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German (de)
English (en)
Other versions
EP0902734A1 (fr
Inventor
Karl Mörwald
Helmut Fitzel
Kurt Engel
Horst FÜRHOFER
Rudolf Scheidl
Reinhard Brandstetter
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
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
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Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0902734A1 publication Critical patent/EP0902734A1/fr
Application granted granted Critical
Publication of EP0902734B1 publication Critical patent/EP0902734B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing

Definitions

  • the invention relates to an adjusting device for adjusting the position of at least one Strand support element, in particular a strand guide roller, with respect to at least one further strand supporting element supporting scaffold of a strand guide in a Continuous caster, in particular steel caster, with at least one hydraulic adjustment cylinder, on the one hand, directly or indirectly on a strand support element and on the other hand attacks on the support frame, the movement of the strand support element via a Position measuring device can be detected and regulated by means of a controller.
  • a device of this type is known from US-A--3,812,900. This is one on one Support scaffold movably arranged by means of hydraulic adjustment cylinders in Direction to or from an opposite rigidly arranged on the scaffold Strand guide roller moves.
  • the respective position (actual value) of the movable strand guide roller is determined by means of a measuring device and with a setpoint by means of a comparator compared.
  • the comparator controls one if the actual value deviates from the setpoint Servo unit via which the hydraulic adjustment cylinders can be connected to the pressure source.
  • the servo valve technology allows a very sensitive and fast control of large outputs due to low tax payments thanks to the supportive effect of the flowing medium.
  • the servo valve technology is mainly used in machine tool technology for sensitive Positioning tasks are used. Accordingly, both the material and also the cost of implementing the servo valve technology.
  • the maintenance and Measures to avoid interference are also complex.
  • the application of the servo valve technology for the continuous casting technology allows an adjustment of the Position of the movable strand guide roller with extreme precision.
  • the disadvantage is the high Technical expenditure on materials when using servo valve technology and contamination the same; Difficulties can arise for the rough operation of the iron and steel works.
  • the invention aims at avoiding these disadvantages and difficulties and presents itself the task of creating an actuator of the type described above, with the the high accuracy of positioning the desired for the strand guide Strand support elements can be achieved with certainty, but only one compared to the stand the technology requires minimal effort, both in terms of the cost of Manufacturing as well as the cost of care and maintenance. Influences resulting from the Foundry technology results, such as dust, high temperatures, splashing water originating from the Strand cooling etc. are said to have no or only minimal effects on the accuracy of the Have positioning of the strand guide.
  • At least one directional control valve is provided, which has a three-position controller or a higher-level controller or a controller with pulse width output, which the of the Position measuring device detected actual value can be entered via a coupling, is switchable.
  • the entire system works with high pressures (e.g. 160 bar) is expedient in at least one hydraulic working line of the hydraulic adjusting cylinder by one Pressure medium supply station to the directional valve or from this to the hydraulic actuating cylinder leads, a throttle or orifice installed.
  • high pressures e.g. 160 bar
  • a preferred embodiment is characterized in that in at least one Hydraulic working line leading from a pressure medium supply station to the directional valve or from this leads to the hydraulic adjustment cylinder, a flow control valve with rectification is installed.
  • a flow control valve sets one of the loads and those corresponding to them Hydraulic press in almost independent adjustment speed.
  • One on this Adjustment speed and the response and fall time of the respective directional valve coordinated design of the 3 or 5-point controller allows a very precise and direct Reaching the desired target position for all load cases.
  • Another preferred embodiment is characterized in that in the to and / or a hydraulic working line leading from the hydraulic adjusting cylinder to the hydraulic adjusting cylinder immediately upstream or downstream throttle or orifice is provided.
  • an additional directional valve in parallel to a throttle or orifice Flow control valve provided with rectification, expediently as a regulator Five-point controller or higher-level controller is provided.
  • the invention further relates to a strand guide for a continuous caster with actuator according to the invention.
  • the displacement measuring device is preferably from one arranged in parallel to the hydraulic adjusting cylinder, opposite to Hydraulic adjusting cylinder working balancing cylinder formed, on the one hand with a Support frame supporting the strand support element, in particular a support segment, and on the other hand with a supporting the strand and arranged movably with respect to the support frame Strand support element is connected directly or indirectly.
  • Fig. 1 is an inventive Actuating device in a schematic representation and Fig. 2, its arrangement on a Strand guide rollers equipped strand guide, also in a schematic representation, illustrate.
  • Figures 3 and 4 show the operation of a three-point controller and of a five-point controller depending on the control deviation.
  • Fig. 5 illustrates one Basic circuit with a flow control valve
  • Fig. 6 shows the basic circuit with a 4/3-way valve with bezels.
  • Fig. 7 shows a valve-throttle combination for realizing two adjustment speeds for the piston of a hydraulic adjustment cylinder.
  • a solidified strand shell 2 and another serve to support the liquid core 3 having strand 4 as strand support elements strand guide rollers 5, 6, which the strand 4 on its broad sides, i.e. 2 on its top 7 and bottom 8 touch.
  • the lower strand guide roller 6 is on attached to a carrier 9, which is wedged by means of tie rods 10 on the carrier 9 of the lower roller 6 with a counter support 11 on which the upper strand guide roller 5 is rotatably mounted, connected is.
  • the counter beam 11 is slidable along the tie rod 10, so that the Distance between the strand guide rollers 5, 6 is changeable.
  • To realize a movement of the counter-carrier 11 relative to the carrier 9 is a hydraulic adjusting cylinder 12. Both the carrier 9 as well as the counter carrier 11 preferably carry out with the formation of Strand support segments a plurality of strand guide rollers 5 and 6.
  • the cylinder 13 of the hydraulic adjusting cylinder 12 is supported on an additional carrier 14, which is also wedged relative to the tie rod 10, so that the additional carrier 14 in its Position relative to the carrier 9 is fixed.
  • the beam 9, the tie rod 10 and the additional beam 14 form a support frame, against which the counter-beam 11 is movable.
  • the piston 15 of the Hydraulic adjusting cylinder 12 is preferably for uniform and radially symmetrical Force distribution designed as a hollow piston, which is penetrated by the tie rod 10.
  • the front one End 16 of the piston 15 is supported on the counter beam 11.
  • a balancing cylinder 17 is provided, which always acts on it is that the counter-carrier 11 at the front end of the piston 15 of the hydraulic adjusting cylinder 12 is present, d. H. is pressed against it.
  • the cylinder of the balancing cylinder 17 is with the Additional support 14 and the piston connected to the counter support 11. This balancing cylinder could also be rotated by 180 ° between the additional support 14 and the Counter carrier 11 may be arranged.
  • the balancing cylinder 17 enables play-free Positioning of the counter-carrier 11 with respect to the carrier 9 and serves, for example additionally as a displacement sensor to determine the actual position of the counter-carrier 11, as in schematic representation in Fig. 1 is shown. In this way there are bruises or contamination of the force application point of the hydraulic adjusting cylinder 12 on Counter beam 11 - that is, at the support point of the piston 15 - without negative influence on the Set position of the strand guide roller 5 to be set.
  • hydraulic working lines 18, 19 are each above Throttles 20 or orifices and directional control valves 21A, 21B and these controlled downstream Check valves 22A, 22B each with a chamber 23, 24 of the hydraulic adjusting cylinder 12 connectable.
  • the respective position of the piston 15 of the hydraulic adjusting cylinder 12 - and thus the strand guide roller 5 - is over the displacement sensor, i.e. the balancing cylinder 17, determined and then its signal to a comparator 25 of a three-point controller 26 passed on.
  • the balancing cylinder 17 is of a own hydraulic working line 28 can be pressurized. Another is Pressure relief valve 29 is provided, the force of the piston 15 of the hydraulic adjusting cylinder 12 if this is the two opposite strand guide rollers 5, 6 moved against each other, limited.
  • Fig. 3 the control of the three-point controller 26 is explained in more detail, the on the ordinate Actuation of the directional control valves and the control deviation are plotted on the abscissa. If the three-point controller 26 gives the signal +1, the magnet of the directional control valve 21A switched, whereas the magnet of the directional control valve 21 B is de-energized. Is the signal of the Three-point controller 26 0, both magnets of the directional control valves 21A and 21B are de-energized; at the Signal -1 is the solenoid of the directional control valve 21A de-energized and the solenoid of the switches Directional control valve 21B.
  • Fig. 5 shows a slightly modified circuit with a 4/3-way valve 21C, which with a Flow control valve 30 is equipped with rectification.
  • 6 shows a similar circuit also with a 4/3-way valve 21C, but without a flow control valve.
  • the check valves 22A, 22B and the hydraulic adjustment cylinder 12 throttles 20 or orifices in addition to in front of the 4/3-way valve 21C provided chokes 20 or orifices in the hydraulic working lines 18, 19. This makes it possible to vary the speed of the Achieve hydraulic adjustment cylinder 12.
  • the chokes or orifices can be larger be dimensioned, the more of them are provided, which has the advantage that the chokes 20 or panels are significantly less sensitive to contamination.
  • Fig. 7 is a valve-throttle combination for realizing two Adjustment speeds for the hydraulic adjustment cylinder 12 illustrated.
  • the piston 15 of the hydraulic adjusting cylinder 12 can be moved in rapid or creep speed.
  • this circuit in which the part enclosed in dash-dotted lines is identical to that 1 are in the hydraulic working lines 18, 19 additionally Throttles 31 and orifices upstream of the directional control valves 21A and 21B, each via a bypass 32, 33 can be bridged.
  • a bridging can be done with the help of a Bypass lines 32, 33 provided directional valve 34 can be achieved via a Five-point controller is activated or deactivated.
  • the five-point rule is through one Three-point controller 26 according to FIG. 1 with an operation according to FIG.
  • the rapid / slow speed switch 35 brings the directional valve 34 in with the signal +1 the position shown in Fig. 4 for the creep speed and with the signal 0, the directional valve 34 in the rapid traverse position in which the hydraulic medium via the bypass lines 32 and 33 flows.
  • a controller with a pulse width output can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Continuous Casting (AREA)
  • Turning (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Knitting Machines (AREA)
  • Actuator (AREA)
  • Tyre Moulding (AREA)

Claims (8)

  1. Dispositif de positionnement pour régler la position d'au moins un élément de support de barre (5), en particulier d'un galet de guidage de barre (5), par rapport à une cage de support (9, 10), portant au moins un autre élément de support de barre (6), d'un guidage de barre (1) dans une installation de coulée continue, en particulier une installation de coulée continue d'acier, comportant au moins un cylindre de positionnement hydraulique (12) qui attaque d'une part directement ou indirectement un élément de support de barre (5) et d'autre part la cage de support (9, 10), le mouvement de l'élément de support de barre (5) pouvant être détecté au moins un dispositif de mesure de déplacement (17) et être régulé au moyen d'un régulateur (26), caractérisé en ce que pour alimenter le cylindre de positionnement hydraulique (12) il est prévu au moins un distributeur (21A, 21B, 21C) qui peut être commuté via un régulateur à trois points (26) ou via un régulateur d'étage supérieur (26, 35) ou via un régulateur à sortie d'impulsions en largeur, dans lequel la valeur réelle détectée par le dispositif de mesure de déplacement (17) peut être entrée via un couplage.
  2. Dispositif de positionnement selon la revendication 1, caractérisé en ce que dans au moins une conduite de travail hydraulique (18, 19) du cylindre de positionnement hydraulique (12), conduite qui mène depuis une station d'alimentation en fluide sous pression jusqu'au distributeur (21A, 21B, 21C) ou depuis celui-ci jusqu'au cylindre de positionnement hydraulique (12), est monté un étranglement (20) ou un diaphragme.
  3. Dispositif de positionnement selon la revendication 1, caractérisé en ce que dans au moins une conduite de travail hydraulique (18, 19), qui mène depuis une station d'alimentation en fluide sous pression jusqu'au distributeur (21A, 21B, 21C) ou depuis celui-ci jusqu'au cylindre de positionnement hydraulique (12), est monté un régulateur de débit (30) avec redressement (figure 5).
  4. Dispositif de positionnement selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce qu'il est prévu une conduite de travail hydraulique (18, 19) menant vers et/ou depuis le cylindre de positionnement hydraulique (12), dans laquelle est prévu un étranglement (20) ou un diaphragme agencé directement en amont ou en aval du cylindre de positionnement hydraulique (12) (figure 6).
  5. Dispositif de positionnement selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'il est prévu un distributeur supplémentaire (34) branché en parallèle par rapport à un étranglement ou à un diaphragme ou par rapport à un régulateur de débit avec redressement (figure 7).
  6. Dispositif de positionnement selon la revendication 5, caractérisé en ce qu'il est prévu, en tant que régulateur, un régulateur à cinq points (26, 35) ou un régulateur d'étage supérieur (figure 7).
  7. Guidage de barre pour une installation de coulée continue, en particulier une installation de coulée continue d'acier, comportant un dispositif de positionnement selon l'une ou plusieurs des revendications 1 à 6.
  8. Guidage de barre selon la revendication 7, caractérisé en ce que le dispositif de mesure de déplacement (17) est formé par un cylindre à balancier (17) agencé en branchement parallèle par rapport au cylindre de positionnement hydraulique (12) et opérant en sens opposé par rapport au cylindre de positionnement hydraulique, lequel est relié directement ou indirectement d'une part à une cage de support (9, 10) portant un élément de support de barre (6), en particulier un segment de support, et d'autre part à un élément de support de barre (5) supportant la barre (4) et agencé mobile par rapport à la cage de support (9, 10) (figure 2).
EP97920445A 1996-05-08 1997-05-07 Dispositif d'ajustement pour ajuster la position d'elements supports de barres de coulee Expired - Lifetime EP0902734B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT823/96 1996-05-08
AT0082396A AT404807B (de) 1996-05-08 1996-05-08 Stellvorrichtung zur einrichtung der lage von strangstützelementen
AT82396 1996-05-08
PCT/AT1997/000090 WO1997041983A1 (fr) 1996-05-08 1997-05-07 Dispositif d'ajustement pour ajuster la position d'elements supports de barres de coulee

Publications (2)

Publication Number Publication Date
EP0902734A1 EP0902734A1 (fr) 1999-03-24
EP0902734B1 true EP0902734B1 (fr) 2001-10-04

Family

ID=3500578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97920445A Expired - Lifetime EP0902734B1 (fr) 1996-05-08 1997-05-07 Dispositif d'ajustement pour ajuster la position d'elements supports de barres de coulee

Country Status (9)

Country Link
US (1) US6176297B1 (fr)
EP (1) EP0902734B1 (fr)
JP (1) JP3961571B2 (fr)
KR (1) KR20000010808A (fr)
CN (1) CN1067927C (fr)
AT (2) AT404807B (fr)
CA (1) CA2254959C (fr)
DE (1) DE59704797D1 (fr)
WO (1) WO1997041983A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015008A1 (de) 2008-03-19 2009-09-24 Sms Siemag Aktiengesellschaft Strangführungseinrichtung und Verfahren zu deren Betrieb

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408322B (de) * 1999-01-15 2001-10-25 Voest Alpine Ind Anlagen Stranggiesskokille
DE102005036060A1 (de) * 2004-10-15 2006-11-16 Bosch Rexroth Aktiengesellschaft Hydraulisch betätigte Gießeinheit
JP2011194446A (ja) * 2010-03-22 2011-10-06 Nippon Steel Engineering Co Ltd 連続鋳造用ガイドロールセグメント
KR101323292B1 (ko) * 2011-08-30 2013-10-30 주식회사 포스코 연주 주편 두께 조절 장치 및 두께 조절 방법
KR101536467B1 (ko) * 2013-12-24 2015-07-13 주식회사 포스코 노즐 위치 측정수단을 구비하는 턴디쉬카 및 이를 이용한 턴디쉬 센 노즐의 위치 측정 방법
CN105909572A (zh) * 2016-07-04 2016-08-31 中国重型机械研究院股份公司 带自锁定功能的快速响应液压位置闭环控制系统
CN114012047A (zh) * 2021-12-20 2022-02-08 上海弘铭冶金技术工程有限公司 一种铸坯电气信号检测装置

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3263284A (en) * 1963-12-20 1966-08-02 United States Steel Corp Constant-pressure pinch rolls for continuous casting
DE2133144B2 (de) * 1971-07-03 1973-09-27 Concast Ag, Zuerich (Schweiz) Verfahren und Vorrichtung zum Ausfordern und Richten eines Stranges in einer Stranggiessanlage
DE2928483C2 (de) * 1979-07-14 1980-12-11 Boehringer Mannheim Gmbh, 6800 Mannheim Verfahren zur Herstellung von 4-Hydroxy-carbazol
DE2928737C2 (de) 1979-07-17 1987-01-02 Mannesmann AG, 4000 Düsseldorf Hydraulische Steuerung mit einer Rohrbruchsicherung für einen Positionszylinder insbesondere für eine angetriebene Strangführungsrolle in Stranggießanlagen
DE2936146A1 (de) * 1979-09-07 1981-03-19 Sack GmbH, 4000 Düsseldorf Hydraulische steuerung fuer einen doppelten beaufschlagbaren anstellzylinder einer stranggiessanlage
IT1220116B (it) 1987-07-30 1990-06-06 Danieli Off Mecc Dispositivo estrazione ed evacuazione colata continua verticale
DE3835010A1 (de) * 1988-10-14 1990-04-19 Rexroth Mannesmann Gmbh Vorrichtung zum abstuetzen und fuehren eines aus der kokille einer stranggussanlage austretenden stranges
DE4138740A1 (de) * 1991-11-26 1993-05-27 Schloemann Siemag Ag Verfahren und vorrichtung zum stranggiessen von brammen oder bloecken
DE19511113A1 (de) * 1995-03-25 1996-09-26 Schloemann Siemag Ag Strangführung einer Stranggießanlage für Dünnbrammen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015008A1 (de) 2008-03-19 2009-09-24 Sms Siemag Aktiengesellschaft Strangführungseinrichtung und Verfahren zu deren Betrieb
DE102008015008B4 (de) 2008-03-19 2024-02-01 Sms Group Gmbh Verfahren zum Betreiben einer Strangführungseinrichtung

Also Published As

Publication number Publication date
WO1997041983A1 (fr) 1997-11-13
AT404807B (de) 1999-03-25
KR20000010808A (ko) 2000-02-25
ATA82396A (de) 1998-07-15
CN1067927C (zh) 2001-07-04
CA2254959A1 (fr) 1997-11-13
EP0902734A1 (fr) 1999-03-24
CN1218426A (zh) 1999-06-02
JP3961571B2 (ja) 2007-08-22
ATE206335T1 (de) 2001-10-15
DE59704797D1 (de) 2001-11-08
JP2000509334A (ja) 2000-07-25
CA2254959C (fr) 2006-10-24
US6176297B1 (en) 2001-01-23

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