EP1543900B1 - Procédé et installation de coulée continue pour calibrer et pour controler l'écartement entre les segments de rouleaux de guidage ou des rouleaux d'entraînement, pendant la coulée de métaux liquides en particulier d'aciers liquides - Google Patents

Procédé et installation de coulée continue pour calibrer et pour controler l'écartement entre les segments de rouleaux de guidage ou des rouleaux d'entraînement, pendant la coulée de métaux liquides en particulier d'aciers liquides Download PDF

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Publication number
EP1543900B1
EP1543900B1 EP04027633A EP04027633A EP1543900B1 EP 1543900 B1 EP1543900 B1 EP 1543900B1 EP 04027633 A EP04027633 A EP 04027633A EP 04027633 A EP04027633 A EP 04027633A EP 1543900 B1 EP1543900 B1 EP 1543900B1
Authority
EP
European Patent Office
Prior art keywords
roller
piston
support roller
support
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.)
Not-in-force
Application number
EP04027633A
Other languages
German (de)
English (en)
Other versions
EP1543900A1 (fr
Inventor
Axel Weyer
Axel Stavenow
Thomas Lamberti
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1543900A1 publication Critical patent/EP1543900A1/fr
Application granted granted Critical
Publication of EP1543900B1 publication Critical patent/EP1543900B1/fr
Not-in-force legal-status Critical Current
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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/208—Controlling or regulating processes or operations for removing cast stock for aligning the guide rolls

Definitions

  • the invention relates to a method and a continuous casting machine for setting and controlling the roll gaps of support roll segments or pairs of drive rolls in a continuous casting machine for casting liquid metals, in particular liquid steel materials, wherein the roll gap between two opposing support rollers of the fixed side and the loose side via paired hydraulic piston Cylinder units are measured and controlled with integrated electronic position or position encoders, wherein the measured values are evaluated within a control loop of the control for the forces to be transmitted to the casting strand in time segments.
  • Such a method is from the EP 1 062 066 B1 known.
  • the paired piston-cylinder units are set to prevent occurring bulges, which can lead to damage to the support roller segments. For this purpose, excessive force effects are avoided in such a way that the piston-cylinder units are adjusted both position-controlled and force-controlled and can be switched from pressure-controlled operation to the force-controlled operation when the pressure in the respective piston-cylinder unit reaches a limit.
  • the position-controlled piston-cylinder units of the support roller segments are adjusted on an alignment stand in a remote workshop by means of a so-called Kalibrierbramme over the total length of all support roller pairs and transmitted the measured values of the calibration for the relevant support roller segment to the control of the continuous casting.
  • the roller gaps may deviate again after installation in the framework of the continuous casting device, so that a roller gap testing device is precautionary driven through the roller gap path.
  • the calibration slab can also be lowered from above into the roller gap path by means of a crane and then the piston-cylinder units of all support roller segments are adjusted over the total length of all roller pairs.
  • the object of the invention is to carry out the roller gap adjustment of individual support roller pairs largely separately in smaller steps and thereby obtain more accurate results, so that the roller gap path as a whole can be set more accurately.
  • the stated object is achieved in that a at least one pair of rollers detecting calibration moved through the open roller gap and clamped during the transport movement between two opposing support rollers for a short time and each stored the clamping positions associated positions of the piston-cylinder units metrologically and after a nominal-actual value comparison, the positions of the piston-cylinder units are corrected before casting start or in a casting pause.
  • the basic adjustment procedure is simplified without special aids and a higher accuracy of the roller gap path is achieved by the smaller measuring steps.
  • the calibration of the support rollers is no longer performed in the workshop, but in the stationary device.
  • the method can also be applied to individual support roller pairs. For an in-line measurement a maximum of two existing pairs of rollers are required.
  • One embodiment is that, in roller pairs mounted in support roller segments, the measurements are made between successive support roller segments on a calibration piece covering a maximum of three pairs of rollers. For in-line measurement of support roller segment transitions and for averaging in the determination of measured values, it is advantageous to extend the measurement method to a maximum of three roller pairs.
  • An accuracy-assurance measure is that based on the vertical distance of the lowermost pair of rollers up to a (in height) middle pair of rollers in a support roller segment, the upper piston-cylinder unit (of two per support roller segment superimposed pairs) to a fixed value is position-controlled.
  • the advantage is an even more accurate measurement result.
  • the lower piston-cylinder unit is controlled to a fixed value in position.
  • a further formation of outstanding measuring points is achieved in that, based on the vertical distance between the calibration piece and the last support roller pair on the fixed side, the respective position in the force-controlled, upper piston-cylinder unit of a support roller segment are stored with their measured values.
  • the device for carrying out the method is based on a prior art, with a continuous casting machine for liquid metals, in particular for liquid steel materials, with the casting strand leading and / or supporting support roller segments or pairs of drive rollers, each paired, upper and lower hydraulic piston-cylinder Units with integrated electronic Wegoder position encoders for adjusting the roller gap between at least two mutually opposite support rollers of the fixed side and the Losseite, wherein the successive support roller pairs form a roller gap and the measured values within a control loop of the control for the cast strand in time to be transmitted forces be used.
  • the stated object is achieved according to the invention in that a calibration piece, which is attached to a traction means, from support roller pair to support roller pair in Rollenspaltweg movable and between a support roller pair by means of the respective Piston-cylinder unit is clamped and the associated positions of the piston-cylinder units are metrologically stored and controlled before casting start or in Guiellopausen. This results in measuring results in smaller steps and therefore more accurate.
  • the traction means may consist of a starter train according to another feature.
  • the calibration piece is tuned in its length in the roller gap path successive maximum of three support roller pairs.
  • the shape and dimensions of the calibrating piece is adapted to the continuous casting machine type and the starting line used (starting bolt or link chain).
  • Fig. 1 the liquid steel material 1 flows from a distribution vessel 2 into an oscillating continuous casting mold 3 and is cooled in a spraying chamber 4 to such an extent that an all-round strand shell surrounds the still liquid core.
  • the cast casting strand 5 forms a thin slab 5a with a rectangular cross-section, which is guided and / or supported on the further path through a roller gap 6 in a plurality of successively following support roller segments 7 and further cooled.
  • Each support roller segment 7 consists of (idling) support rollers 8a and 8b, which form a fixed side 9 of non-adjustable support rollers 8a and a loose side 10 for adjustable to different cast strand thickness support rollers 8b.
  • the adjustability results from piston-cylinder units 11 and 12, which are arranged in pairs over the strand width ( Fig. 2 to 4 ).
  • roller gap 13 by means of position sensors 14 via a control circuit 15 to the respective, for example.
  • a control circuit 15 By shrinking changing roller gap 13 and the applied support forces.
  • the cast strand 5 is formed via a bending driver 16, Biegerollencrue 17 by means of a Bietempotreibers 18 in the horizontal.
  • the casting strand 5 is pulled out by means of a Anfahrbolzens 19, which may consist of sheet-continuous casting from a limbs-Anfahrstrangkette and pulled out by means of a roller drive 20 and parked after uncoupling by the bending driver 16 in a quiver 21 for a later use.
  • a Anfahrbolzens 19 which may consist of sheet-continuous casting from a limbs-Anfahrstrangkette and pulled out by means of a roller drive 20 and parked after uncoupling by the bending driver 16 in a quiver 21 for a later use.
  • the procedure for setting and controlling the roller gap 6 (FIG. Fig. 2 ) operates such that a at least one pair of rollers 8a, 8b detecting calibration piece 22 is moved through the open Rollenspaltweg 13 and clamped during transport between each two opposing support rollers 8a, 8b for a short period of time (outside the casting or before the casting start) and the respectively associated with the clamping positions positions of the piston-cylinder units 11, 12 stored metrologically and after a desired-actual value comparison 23, the determined position of the piston-cylinder units 11, 12 are corrected.
  • Fig. 2 is, based on the vertical distance 24 of the lowermost pair of rollers 25 to a middle pair of rollers 26 in a support roller segment 7, the upper piston-cylinder unit 11 is controlled to a fixed value in this position.
  • Fig. 3 is stored on the vertical distance 24 between the calibration piece 22 or 22a and the first pair of rollers 27 in the support roller segment 7, the measured values of the position of the lower piston-cylinder unit 12 in a computer 30 (see also Fig. 4 ).
  • the lower piston-cylinder unit 12 is regulated to a fixed value in the position of the middle roller pair 26 to the first roller pair 27 of a support roller segment 7.
  • calibration piece 22 or 22a is attached to a traction means 28, which consists in the embodiment of a starter strand in the form of a starting pin 19.
  • the calibration piece 22, 22a is moved from the support roller pair 8a, 8b to the next pair of support rollers 8a, 8b within the roller gap path 13 and is clamped between the opposing support rollers 8a, 8b by the respective piston-cylinder unit 11 or 12.
  • the position of the piston-cylinder units 11 or 12 thus obtained is stored in a positionally controlled manner and controlled in a force-controlled manner before the casting start or during casting pauses.
  • the layer 31 of the calibration piece 22; 22a held, for example.
  • Via a measuring roller or a driven roller in the pulse path 13 with a pulse and the data are passed into an evaluation unit 29.
  • the calibration piece 22 or 22a is tuned in its length to a minimum of two in the roller gap 13 successive support rollers 8a, 8a and 8b, 8b.
  • the shape and dimensions of the calibrating piece 22, 22a are adapted to the continuous casting machine type as well as to the starting strand used as traction means 28.
  • Fig. 4 are shown in the control loop 15, the desired position or the desired force of the upper piston-cylinder unit 11 and the lower piston-cylinder unit 12.
  • the respective actual position is determined by the position sensor 14.
  • Actual positions and target positions are each in the evaluation unit 29, the the computer 30 is connected, entered, in which the position 31 of the calibration piece 22, 22 a is taken into account for each measurement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (12)

  1. Procédé pour le réglage de base et pour le contrôle de l'interstice entre les rouleaux (6) de segments de rouleaux d'appui (7) ou de paires de rouleaux d'attaque dans une machine pour la coulée continue pour couler des métaux liquides, notamment des aciers liquides (1), consistant à régler l'interstice entre les rouleaux (6) entre deux rouleaux d'appui (8a ; 8b) qui se font face sur le côté fixe (9) et le côté mobile (10), par l'intermédiaire d'unités hydrauliques piston/cylindre appairées (11, 12) avec des transmetteurs de course et de position électroniques intégrés (14), les valeurs mesurées étant évaluées au sein d'un circuit de régulation (15) d'un circuit de commande des forces à transmettre dans des intervalles de temps sur la barre de coulée (5),
    caractérisé en ce que,
    une pièce de calibrage (22 ; 22a) détectant au moins une paire de rouleaux (8a ; 8b) est déplacée à travers la trajectoire dans l'interstice ouvert entre les rouleaux (13) et serrée pendant un bref laps de temps pendant le déplacement de transport entre chaque fois deux rouleaux d'appui (8a ; 8b) opposés et les positions des unités pistons/cylindres (11 ; 12) respectivement associées aux positions de serrage sont mémorisées par technique de mesure et après une comparaison entre la valeur de consigne et la valeur réelle (23), les positions des unités pistons/cylindres (11 ; 12) sont corrigées avant le démarrage de la coulée ou pendant une pause de coulée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que,
    lorsque les paires de rouleaux (8a; 8b) sont logées dans les segments de rouleaux d'appui (7), on procède aux mesures entre des segments de rouleaux d'appui (7) successifs, sur une pièce de calibrage (22a) recouvrant au maximum trois paires de rouleaux (8a ; 8b).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que,
    la pièce de calibrage (22; 22a) se déplace sur le trajet de l'interstice entre les rouleaux (13) du haut vers le bas ou du bas vers le haut.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que,
    en fonction de l'écart vertical (24) entre la paire de rouleaux inférieure (25) et une paire de rouleaux centrale (26), dans un segment de rouleau d'appui (7), on règle la position de l'unité piston/cylindre supérieure (11) sur une valeur fixe.
  5. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que,
    en fonction de l'écart vertical respectif (24) entre la pièce de calibrage (22 ; 22a) et la première paire de rouleaux (27) sur le côté fixe (9) dans le segment de rouleaux d'appui (7), les valeurs mesurées de l'unité piston/cylindre inférieure (12) sont mémorisées.
  6. Procédé selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que,
    d'une paire de rouleaux centrale (26), jusqu'à la première paire de rouleaux (27) d'un segment de rouleau d'appui (7), on règle la position de l'unité piston/cylindre inférieure ( ) sur une valeur fixe.
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que,
    en fonction de l'écart vertical (24) entre la pièce de calibrage (22, 22a) et la dernière paire de rouleaux d'appui (8a) sur le côté fixe (9), on mémorise la position respective dans l'unité piston/cylindre supérieure (11) réglée par force d'un segment de rouleaux d'appui (7) avec leurs valeurs mesurées.
  8. Machine pour la coulée continue de métaux liquides (1) notamment d'aciers liquides, avec les segments de rouleaux d'appui (7) ou paires de rouleaux d'attaque guidant et/ou soutenant la barre de coulée (5), comportant respectivement des unités hydrauliques piston/cylindre (11 ; 12) appairées, avec des transmetteurs de course et de position électroniques intégrés (14) pour le réglage de l'interstice entre les rouleaux (6) entre au moins deux rouleaux d'appui (8a ; 8b) respectivement opposés du côté fixe (9) et du côté mobile (10), les paires successives de rouleaux d'appui (8a ; 8b) formant une trajectoire dans l'interstice entre les rouleaux (13) et les valeurs mesurées étant utilisées au sein d'un circuit de régulation (15) du système de commande des forces qu doivent être appliquées dans des intervalles de temps sur la barre de coulée (5),
    caractérisé en ce que,
    une pièce de calibrage (22), qui est fixée sur un moyen de traction (28) est déplaçable dans la trajectoire dans l'interstice entre les rouleaux (13) d'une paire de rouleaux d'appui( 8a, 8b) à une autre paire de rouleaux d'appui (8a ; 8b) et est serrée entre une paire de rouleaux d'appui (8a, 8b) au moyen de l'unité piston/cylindre (11 ; 12) et en ce que les positions qui y sont liées des unités piston/cylindre (11 ; 12) sont mémorisées par technique de mesure et contrôlables avant le démarrage de la coulée ou pendant des pauses de coulée.
  9. Machine de coulée continue selon la revendication 8,
    caractérisée en ce que,
    l'organe de traction (28) consiste dans une fausse barre (19).
  10. Machine de coulée continue selon l'une quelconque des revendications 8 et 9, caractérisée en ce que,
    dans sa longueur, la pièce de calibrage (22, 22a) est adaptée à un maximum de trois paires successives de rouleaux d'appui (8a ; 8b) sur la trajectoire dans l'interstice entre les rouleaux (13).
  11. Machine de coulée continue selon l'une quelconque des revendications 8 à 10, caractérisée en ce que,
    la forme et les dimensions de la pièce de calibrage (22 ; 22a) sont adaptées au type des installations de coulée continue et à la fausse barre (19) utilisée.
  12. Machine de coulée continue selon l'une quelconque des revendications 8 à 11, caractérisée en ce que,
    l'enregistrement des valeurs mesurées, l'affectation et l'évaluation des résultats des mesures s'effectuent dans un ordinateur central (30), dans le hall de distribution.
EP04027633A 2003-12-18 2004-11-22 Procédé et installation de coulée continue pour calibrer et pour controler l'écartement entre les segments de rouleaux de guidage ou des rouleaux d'entraînement, pendant la coulée de métaux liquides en particulier d'aciers liquides Not-in-force EP1543900B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10359380A DE10359380A1 (de) 2003-12-18 2003-12-18 Verfahren und Stranggießmaschine zum Grundeinstellen und Kontrollieren der Rollenspalte von Stützrollensegmenten oder Treiberrollenpaaren beim Gießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen
DE10359380 2003-12-18

Publications (2)

Publication Number Publication Date
EP1543900A1 EP1543900A1 (fr) 2005-06-22
EP1543900B1 true EP1543900B1 (fr) 2008-03-12

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Application Number Title Priority Date Filing Date
EP04027633A Not-in-force EP1543900B1 (fr) 2003-12-18 2004-11-22 Procédé et installation de coulée continue pour calibrer et pour controler l'écartement entre les segments de rouleaux de guidage ou des rouleaux d'entraînement, pendant la coulée de métaux liquides en particulier d'aciers liquides

Country Status (3)

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EP (1) EP1543900B1 (fr)
AT (1) ATE388776T1 (fr)
DE (2) DE10359380A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006043797A1 (de) * 2006-09-19 2008-03-27 Sms Demag Ag Verfahren zum Stranggießen eines Metallstranges
CN102416450B (zh) * 2011-12-21 2013-02-13 宝钢工程技术集团有限公司 薄带连铸带钢自由活套位置控制装置及控制方法
CN111001772B (zh) * 2019-12-24 2021-08-24 中冶南方连铸技术工程有限责任公司 轻压下或重压下辊缝控制方法及装置
CN112985861B (zh) * 2021-02-19 2022-08-09 北京首钢自动化信息技术有限公司 一种拉矫机扇形段故障诊断方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5311224Y2 (fr) * 1973-10-24 1978-03-27
US4344232A (en) * 1980-09-09 1982-08-17 Bethlehem Steel Corporation Method and apparatus for measuring roll gap and alignment for continuous casters
DE19627336C1 (de) * 1996-06-28 1997-09-18 Mannesmann Ag Verfahren zum Führen eines Stranges und Strangführung
DE19809807C2 (de) * 1998-03-09 2003-03-27 Sms Demag Ag Anstellverfahren für ein Rollensegment einer Stranggießanlage

Also Published As

Publication number Publication date
DE10359380A1 (de) 2005-07-14
ATE388776T1 (de) 2008-03-15
DE502004006480D1 (de) 2008-04-24
EP1543900A1 (fr) 2005-06-22

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