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EP1817125A2 - Method and roll segment for determining core solidification and/or the liquid crater tip in the continuous casting of metals, particularly steel materials - Google Patents

Method and roll segment for determining core solidification and/or the liquid crater tip in the continuous casting of metals, particularly steel materials

Info

Publication number
EP1817125A2
EP1817125A2 EP05790096A EP05790096A EP1817125A2 EP 1817125 A2 EP1817125 A2 EP 1817125A2 EP 05790096 A EP05790096 A EP 05790096A EP 05790096 A EP05790096 A EP 05790096A EP 1817125 A2 EP1817125 A2 EP 1817125A2
Authority
EP
European Patent Office
Prior art keywords
roller
cylinder units
piston
rollers
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.)
Withdrawn
Application number
EP05790096A
Other languages
German (de)
French (fr)
Inventor
Axel Weyer
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 EP1817125A2 publication Critical patent/EP1817125A2/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • 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 a method and a roller segment for determining the core solidification and / or the sump tip in the continuous casting of metals, in particular of steel materials, within a roller segment of a support roller frame, the upper rollers supporting the upper frame via disposed in the corners of a polygon hydraulic piston-cylinder units be set against the sub-rolls of a sub-frame to the respective strand thickness drivingly.
  • each segment frame is divided into two parts and the frame parts are clamped together by means of hydraulic piston-cylinder units.
  • each roller segment has four hydraulic cylinders which clamp in pairs opposing rollers for supporting and promoting the solidifying casting strand. At least one of these rollers is pressed as a drive roller for transferring the strand conveying forces with a defined contact force against the cast strand.
  • the roller gap between the roller conveyor of the fixed side and the roller conveyor of the loose side is detected by hydraulic cylinders with integrated electronic encoders or position sensors, measured and, if necessary, regulated.
  • a determination of the position of the sump tip in the interior of the casting strand takes place via the movement of the entire upper frame and / or an evaluation of the four position values in conjunction with the resultant force values of the four hydraulic cylinders. It has been found that this method of determining the sump tip and the preceding regions is not sufficiently accurate. In addition, the cost of non-position-controlled roller segments is very high.
  • the measured values for position or force rules for determining the position are determined by an independent pair of piston-cylinder units with external measuring device or internal measuring device for adjusting a rotationally driven, single top roller the core solidification and / or the sump tip are taken into account in the cast strand.
  • the obtained measurement results are advantageously used as a basis for extended procedural processes and functions for the operation and optimization of the setting parameters of the continuous casting and the continuous casting plant.
  • the specification of a position value with subsequent evaluation of the resulting force or specification of the force values with subsequent evaluation of the resulting position can be used as process-technical feedback of the strand properties or the position of the sump tip.
  • the determination of the exact position of the sump tip here can be improved in accuracy in contrast to the previously known approach to use the entire upper frame for measurement.
  • the application relates to position-controlled segments and independent installation for segments without position control. The equipment is made cheaper.
  • a presetting of an increased accuracy can be carried out according to further features in that the measured values are measured simultaneously on several (selected) roller segments with at least one pair of independent piston-cylinder units and all measured data are processed to a mean value.
  • the mechanical solution of the invention task is achieved in that in the upper frame an independent, for fastening an external Messeeinrich ⁇ device or at least a pair of hydraulic piston-cylinder units serving traverse is provided with a rotationally driven, individual upper roller for Mes ⁇ solution of the data for the cold strand or the hot extruding force.
  • the traverse can be designed with one or two hydraulic piston-cylinder units.
  • the piston-cylinder units are regulated in their position.
  • position sensors are integrated into the cylinders or an external measuring device is attached to the crossbeam.
  • a control system adopts the determined position values and regulates the desired cylinder position via a hydraulic valve.
  • the individual role can be regulated in the contact force.
  • pressure sensors are installed in the hydraulic cylinders (in both cylinder chambers) or in connecting lines (between control valve and cylinder). The cylinder set forces are controlled by the hydraulic control valve.
  • One embodiment provides that with an overall odd number of upper rollers and lower rollers, at least one middle upper roller and the opposite lower roller are driven.
  • roller segment with the features according to the invention in the casting direction as the last roller segment of the support roller frame.
  • position-controlled traverses as the last framework of a support roll stand, an optimization of the casting speed with maximum utilization of the continuous casting plant and maximum throughput is possible.
  • a risk due to bulging of the strand behind the continuous casting device at too high a set casting speed at which the liquid bottom leaves the strand guide is thereby avoided.
  • FIG. 1 shows an upper roller segment in perspective in an exploded view
  • FIG Fig. 2 is a perspective view of a unit of upper frame
  • Subframe which forms a Stütz ⁇ roll stand in succession in a row.
  • FIG. 1 and 2 show a roller segment 1 and Fig. 2, the roller segment 1 in the installed state in a part of the support roller frame 2.
  • An upper frame 3 carries the upper rollers 4.
  • In the corners 5a, 5b, 5c, 5d of a polygon are hyd ⁇ Raulische piston-cylinder units 6 mounted and connected to a sub-frame 7 via the piston.
  • the subframe 7 carries the lower roller 8.
  • the upper rollers 4 are in part lengths 4a, 4b and the lower rollers 8 in part lengths 8a, 8b executed and rotatably supported respectively by means of inner bearings 11 and outer bearings 12 and internally cooled.
  • the method for determining the core solidification and / or the position of the sump tip in the continuous casting of metals, in particular Stahlwerkstof ⁇ fen, is exercised such that an independent of the top rollers 4 and lower rollers 8, external measuring device 13 or at least one of the übri ⁇
  • an independent of the top rollers 4 and lower rollers 8 external measuring device 13 or at least one of the übri ⁇
  • the measured values for position or force rules for determining the position of Core solidification and / or the position of the sump tip in the cast strand are taken into account.
  • the f ⁇ driven single upper roller 4 has an upper stub shaft 15 and the opposite not engageable lower roller 8 a lower Wellen ⁇ stump 16, to the respective rotary actuators (not shown) are connected.
  • the measured values at a plurality of roller segments 1 with at least one respective pair 14 of independent piston-cylinder units 14a, 14b can be measured simultaneously and all measured data can be processed to a mean value.
  • the traverse 20 is equipped with lifting lugs 21, so that a structural unit consisting of the individual upper roller 4, the independent pair 14 of piston-cylinder units 6 and the measuring device 13 can be lifted or inserted by crane.
  • the pair 14 of the two piston-cylinder units 6 is connected via joints 22.

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

Abstract

A method and roll segment (1) for determining core solidification and/or the liquid crater tip in the continuous casting of metals, particularly steel materials, inside a roll segment (1) of a support roller gantry (2), wherein the upper frame (3) thereof supporting the upper rollers (4) can be drivingly adjusted via hydraulic piston-cylinder units (6), which are arranged in the corners (5a-5d) of a polygon, counter to the lower rollers (8) of a lower frame (7), according to the thickness of the billet, working in a more accurate manner, using an independent pair (14) of piston-cylinder units (6) with an external or internal measuring device (13a,13) in order to adjust a rotationally driven, individual upper roller (4), taking into account the measuring values for positional adjustment or force adjustment in order to determine the position of core solidification and/or the liquid crater tip in the cast billet.

Description

Verfahren und Rollensegment zum Bestimmen der Kemerstarrung und / oder der Sumpfspitze beim Stranggießen von Metallen, insbesondere von Stahl- WerkstoffenMethod and roller segment for determining the core solidification and / or the sump tip in the continuous casting of metals, in particular of steel materials
Die Erfindung betrifft ein Verfahren und ein Rollensegment zum Bestimmen der Kernerstarrung und / oder der Sumpfspitze beim Stranggießen von Metallen, insbesondere von Stahlwerkstoffen, innerhalb eines Rollensegmentes eines Stützrollengerüstes, dessen die Oberrollen tragenden Oberrahmen über in den Ecken eines Polygons angeordnete hydraulische Kolben-Zylinder-Einheiten gegen die Unterrollen eines Unterrahmens auf die jeweilige Strangdicke antriebsmäßig eingestellt werden.The invention relates to a method and a roller segment for determining the core solidification and / or the sump tip in the continuous casting of metals, in particular of steel materials, within a roller segment of a support roller frame, the upper rollers supporting the upper frame via disposed in the corners of a polygon hydraulic piston-cylinder units be set against the sub-rolls of a sub-frame to the respective strand thickness drivingly.
Aus der EP 0 908256 B1 ist ein Verfahren und eine Vorrichtung zum Erzeugen von Brammen in einer Stranggießanlage bekannt, deren Strangführung aus der Stranggießkokille nachgeordneten Rollensegmenten besteht. Jeder Segment- rahmen ist zweigeteilt und die Rahmenteile sind mittels hydraulischen Kolben- Zylinder-Einheiten miteinander verspannt. Jedes Rollensegment weist hierzu vier Hydraulikzylinder auf, die paarweise einander gegenüberliegende Rollen zur Stützung und zur Förderung des erstarrenden Gießstranges verspannen. Zumindest eine dieser Rollen wird als Antriebsrolle zur Übertragung der Strang- förderkräfte mit einer definierten Anstellkraft gegen den Gießstrang gedrückt. Dabei wird der Rollenspalt zwischen der Rollenbahn der Festseite und der Rol¬ lenbahn der Losseite über Hydraulikzylinder mit integrierten elektronischen Weggebern bzw. Positionsgebern zueinander festgestellt, gemessen und erfor¬ derlichenfalls geregelt. Eine Feststellung der Lage der Sumpfspitze im Inneren des Gießstrangs erfolgt über die Bewegung des gesamten Oberrahmens und / oder eine Auswertung der vier Positionswerte in Verbindung mit den resultie¬ renden Kraftwerten der vier Hydraulikzylinder. Es hat sich gezeigt, dass diese Methode der Ermittlung der Sumpfspitze und der vorhergehenden Bereiche nicht ausreichend genau ist. Außerdem ist der Aufwand für nicht positionsgeregelte Rollensegmente sehr hoch.From EP 0908256 B1 a method and an apparatus for producing slabs in a continuous casting plant is known, whose strand guide consists of roll segments arranged downstream of the continuous casting mold. Each segment frame is divided into two parts and the frame parts are clamped together by means of hydraulic piston-cylinder units. For this purpose, each roller segment has four hydraulic cylinders which clamp in pairs opposing rollers for supporting and promoting the solidifying casting strand. At least one of these rollers is pressed as a drive roller for transferring the strand conveying forces with a defined contact force against the cast strand. In this case, the roller gap between the roller conveyor of the fixed side and the roller conveyor of the loose side is detected by hydraulic cylinders with integrated electronic encoders or position sensors, measured and, if necessary, regulated. A determination of the position of the sump tip in the interior of the casting strand takes place via the movement of the entire upper frame and / or an evaluation of the four position values in conjunction with the resultant force values of the four hydraulic cylinders. It has been found that this method of determining the sump tip and the preceding regions is not sufficiently accurate. In addition, the cost of non-position-controlled roller segments is very high.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass über ein un- abhängiges Paar aus Kolben-Zylinder-Einheiten mit externer Messeinrichtung oder innerer Messeinrichtung für das Anstellen einer drehangetriebenen, ein¬ zelnen Oberrolle die Messwerte beim Positions- oder Kraftregeln zum Feststel¬ len der Lage der Kernerstarrung und / oder der Sumpfspitze im Gießstrang be¬ rücksichtigt werden. Die gewonnenen Messergebnisse dienen vorteilhafterwei- se als Grundlage für erweiterte verfahrenstechnische Abläufe und Funktionen für den Betrieb und die Optimierung der Einstellparameter des Stranggießens und der Stranggießanlage. Die Vorgabe eines Positionswertes mit anschlie¬ ßender Auswertung der resultierenden Kraft oder die Vorgabe der Kraftwerte mit anschließender Auswertung der resultierenden Position kann als verfah- renstechnische Rückführung der Strangbeschaffenheit bzw. die Lage der Sumpfspitze verwendet werden. Die Feststellung der genauen Lage der Sumpfspitze kann hierbei im Gegensatz zur bisher bekannten Vorgehensweise, den gesamten Oberrahmen zur Messung heranzuziehen, in der Genauigkeit verbessert werden. Die Anwendung bezieht sich auf positionsgeregelte Seg- mente und eine unabhängige Installation für Segmente ohne Positionsregelung. Dabei wird die Ausrüstung kostengünstiger gestaltet.This object is achieved according to the invention in that the measured values for position or force rules for determining the position are determined by an independent pair of piston-cylinder units with external measuring device or internal measuring device for adjusting a rotationally driven, single top roller the core solidification and / or the sump tip are taken into account in the cast strand. The obtained measurement results are advantageously used as a basis for extended procedural processes and functions for the operation and optimization of the setting parameters of the continuous casting and the continuous casting plant. The specification of a position value with subsequent evaluation of the resulting force or specification of the force values with subsequent evaluation of the resulting position can be used as process-technical feedback of the strand properties or the position of the sump tip. The determination of the exact position of the sump tip here can be improved in accuracy in contrast to the previously known approach to use the entire upper frame for measurement. The application relates to position-controlled segments and independent installation for segments without position control. The equipment is made cheaper.
Eine Voreinstellung einer erhöhten Genauigkeit kann nach weiteren Merkmalen dadurch erfolgen, dass die Messwerte an mehreren (ausgewählten) Rollen- Segmenten mit zumindest jeweils einem Paar aus unabhängigen Kolben- Zylinder-Einheiten gleichzeitig gemessen und alle Messdaten zu einem Mittel¬ wert verarbeitet werden.A presetting of an increased accuracy can be carried out according to further features in that the measured values are measured simultaneously on several (selected) roller segments with at least one pair of independent piston-cylinder units and all measured data are processed to a mean value.
Die mechanische Lösung der Erfindungsaufgabe wird dadurch erzielt, dass im Oberrahmen eine unabhängige, zur Befestigung einer externen Messeeinrich¬ tung oder zumindest einem Paar aus hydraulischen Kolben-Zylinder-Einheiten dienenden Traverse mit einer drehangetriebenen, einzelnen Oberrolle zur Mes¬ sung der Daten für die Kaltstrang- oder die Warmstrangkraft vorgesehen ist. Die Traverse kann mit einem oder zwei hydraulischen Kolben-Zylinder-Einheiten ausgeführt sein. Die Kolben-Zylinder-Einheiten werden in ihrer Position gere¬ gelt. Hierzu werden Positionsgeber in die Zylinder integriert oder eine externe Messeinrichtung an der Traverse angebracht. Ein Regelsystem übernimmt die festgestellten Positionswerte und regelt die Zylinder-Sollposition über ein hyd¬ raulisches Ventil. In gleicher Weise kann die einzelne Rolle in der Anstellkraft geregelt werden. Hierzu werden Drucksensoren in den Hydraulikzylindern (in beiden Zylinderkammern) oder in Verbindungsleitungen (zwischen Regelventil und Zylinder) eingebaut. Die Zylindersollkräfte werden über das hydraulische Regelventil geregelt.The mechanical solution of the invention task is achieved in that in the upper frame an independent, for fastening an external Messeeinrich¬ device or at least a pair of hydraulic piston-cylinder units serving traverse is provided with a rotationally driven, individual upper roller for Mes¬ solution of the data for the cold strand or the hot extruding force. The traverse can be designed with one or two hydraulic piston-cylinder units. The piston-cylinder units are regulated in their position. For this purpose, position sensors are integrated into the cylinders or an external measuring device is attached to the crossbeam. A control system adopts the determined position values and regulates the desired cylinder position via a hydraulic valve. In the same way, the individual role can be regulated in the contact force. For this purpose, pressure sensors are installed in the hydraulic cylinders (in both cylinder chambers) or in connecting lines (between control valve and cylinder). The cylinder set forces are controlled by the hydraulic control valve.
Eine Ausgestaltung sieht vor, dass bei einer insgesamt ungeraden Anzahl von Oberrollen und Unterrollen zumindest eine mittlere Oberrolle und die gegenü- berliegende Unterrolle angetrieben sind.One embodiment provides that with an overall odd number of upper rollers and lower rollers, at least one middle upper roller and the opposite lower roller are driven.
Vorteilhaft ist sodann eine Anordnung des Rollensegmentes mit den erfin¬ dungsgemäßen Merkmalen in Gießrichtung als letztes Rollensegment des Stützrollengerüstes. Bei einem solchen Einsatz der positionsgeregelten Traver- se als letztes Gerüst eines Stützrollengerüstes ist eine Optimierung der Gie߬ geschwindigkeit bei maximaler Ausnutzung der Stranggießanlage und maxima¬ lem Durchsatz möglich. Eine Gefährdung, bedingt durch Ausbauchung des Stranges hinter der Stranggießvorrichtung bei zu hoch eingestellter Gießge¬ schwindigkeit, bei der der flüssige Sumpf die Strangführung verlässt, wird da- durch vermieden.Advantageous then is an arrangement of the roller segment with the features according to the invention in the casting direction as the last roller segment of the support roller frame. In such an employment of the position-controlled traverses as the last framework of a support roll stand, an optimization of the casting speed with maximum utilization of the continuous casting plant and maximum throughput is possible. A risk due to bulging of the strand behind the continuous casting device at too high a set casting speed at which the liquid bottom leaves the strand guide is thereby avoided.
In der Zeichnung sind Ausführungsbeispiele dargestellt, die nachstehend näher erläutert werden. Es zeigen:In the drawing embodiments are shown, which are explained in more detail below. Show it:
Fig. 1 ein oberes Rollensegment perspektivisch in einer Explosionsdar¬ stellung und Fig. 2 eine perspektivische Ansicht einer Einheit aus Oberrahmen undFIG. 1 shows an upper roller segment in perspective in an exploded view and FIG Fig. 2 is a perspective view of a unit of upper frame and
Unterrahmen, die in Mehrfachanordnung hintereinander ein Stütz¬ rollengerüst bildet.Subframe, which forms a Stütz¬ roll stand in succession in a row.
Die Fig. 1 und 2 zeigen ein Rollensegment 1 und Fig. 2 das Rollensegment 1 im eingebauten Zustand in einem Teil des Stützrollengerüstes 2. Ein Oberrahmen 3 trägt die Oberrollen 4. In den Ecken 5a, 5b, 5c, 5d eines Polygons sind hyd¬ raulische Kolben-Zylinder-Einheiten 6 montiert und mit einem Unterrahmen 7 über die Kolben verbunden. Der Unterrahmen 7 trägt die Unterrolle 8. Für das Anstellen der Oberrollen 4 gegen die jeweils zugehörige Unterrolle 8 ist der O- berrahmen 3 an seitlichen Ständern 9a und 9b in Führungen 10 gleitend gela¬ gert, so dass der Oberrahmen 3 mit seinen Oberrollen 4 entsprechende Bewe¬ gungen bei Änderung der Gießstrangdicke ( bspw. Ausbauchungen) ausführen kann.1 and 2 show a roller segment 1 and Fig. 2, the roller segment 1 in the installed state in a part of the support roller frame 2. An upper frame 3 carries the upper rollers 4. In the corners 5a, 5b, 5c, 5d of a polygon are hyd¬ Raulische piston-cylinder units 6 mounted and connected to a sub-frame 7 via the piston. The subframe 7 carries the lower roller 8. For the hiring of the upper rollers 4 against the respectively associated lower roller 8 of the O- is superframe 3 on lateral uprights 9a and 9b in guides 10 sliding gela¬ siege, so that the upper frame 3 with its upper rollers 4 corresponding Movements when changing the Gießstrangdicke (eg. Bulges) can perform.
Die Oberrollen 4 sind in Teillängen 4a, 4b und die Unterrollen 8 in Teillängen 8a, 8b ausgeführt und jeweils mittels Innenlagern 11 und Außenlagern 12 dreh¬ gelagert und innen gekühlt.The upper rollers 4 are in part lengths 4a, 4b and the lower rollers 8 in part lengths 8a, 8b executed and rotatably supported respectively by means of inner bearings 11 and outer bearings 12 and internally cooled.
Das Verfahren zum Bestimmen der Kernerstarrung und / oder der Lage der Sumpfspitze beim Stranggießen von Metallen, insbesondere von Stahlwerkstof¬ fen, wird derart ausgeübt, dass über ein von den Oberrollen 4 und Unterrollen 8 unabhängige, externe Messeinrichtung 13 oder zumindest einem von den übri¬ gen Kolben-Zylinder-Einheiten 6 unabhängigen Paar 14 aus weiteren Kolben- Zylinder-Einheiten 14a, 14b mit einer inneren Messeinrichtung 13a für das An¬ stellen einer drehangetriebenen, einzelnen Oberrolle 4 die Messwerte beim Po- sitions- oder Kraftregeln zur Feststellung der Lage der Kernerstarrung und / o- der der Lage der Sumpfspitze im Gießstrang berücksichtigt werden. Die dreh¬ angetriebene einzelne Oberrolle 4 weist einen oberen Wellenstumpf 15 auf und die gegenüberliegende nicht anstellbare Unterrolle 8 einen unteren Wellen¬ stumpf 16, an die jeweilige Drehantriebe (nicht gezeigt) angeschlossen sind. Es können verfahrensbedingt auch die Messwerte an mehreren Rollensegmen¬ ten 1 mit zumindest jeweils einem Paar 14 aus unabhängigen Kolben-Zylinder- Einheiten 14a, 14b gleichzeitig gemessen und alle Messdaten zu einem Mittel¬ wert verarbeitet werden.The method for determining the core solidification and / or the position of the sump tip in the continuous casting of metals, in particular Stahlwerkstof¬ fen, is exercised such that an independent of the top rollers 4 and lower rollers 8, external measuring device 13 or at least one of the übri¬ For example, in the case of piston-cylinder units 6, independent of other piston-cylinder units 14a, 14b with an internal measuring device 13a for setting a rotationally driven, individual top roller 4, the measured values for position or force rules for determining the position of Core solidification and / or the position of the sump tip in the cast strand are taken into account. The dreh¬ driven single upper roller 4 has an upper stub shaft 15 and the opposite not engageable lower roller 8 a lower Wellen¬ stump 16, to the respective rotary actuators (not shown) are connected. As a result of the method, the measured values at a plurality of roller segments 1 with at least one respective pair 14 of independent piston-cylinder units 14a, 14b can be measured simultaneously and all measured data can be processed to a mean value.
Gemäß Fig. 2 (vgl. auch Fig. 1) trägt der Oberrahmen 3 außer den polygonalen Kolben-Zylinder-Einheiten 6 auf der Losseite 17 (dem Oberrahmen 3 entspricht auf der Festseite 18 der fest angeordnete Unterrahmen 7) zwischen paarweisen Querwänden 19 eine Traverse 20, an der die einzelne, angetriebene Oberrolle 4 befestigt und drehgelagert ist. Die Traverse 20 ist mit Kranösen 21 ausgestat¬ tet, so dass eine Baueinheit bestehend aus der einzelnen Oberrolle 4 , dem unabhängigen Paar 14 aus Kolben-Zylinder-Einheiten 6 und der Messeinrich¬ tung 13 mit einem Kran herausgehoben oder eingesetzt werden kann. Das Paar 14 aus den beiden Kolben-Zylinder-Einheiten 6 ist über Gelenke 22 verbunden.2 (see also Fig. 1) carries the upper frame 3 except the polygonal piston-cylinder units 6 on the Losseite 17 (the upper frame 3 corresponds to the fixed side 18 of the fixed sub-frame 7) between paired transverse walls 19 a traverse 20, to which the single, driven upper roller 4 is fixed and rotatably mounted. The traverse 20 is equipped with lifting lugs 21, so that a structural unit consisting of the individual upper roller 4, the independent pair 14 of piston-cylinder units 6 and the measuring device 13 can be lifted or inserted by crane. The pair 14 of the two piston-cylinder units 6 is connected via joints 22.
Im Ausführungsbeispiel ist bei einer insgesamt ungeraden Anzahl von Oberrol¬ len 4 und Unterrollen 8 zumindest die mittlere Oberrolle 4 über den Wellen¬ stumpf 15 angetrieben. Die gegenüberliegende Unterrolle 8 ist ebenfalls ange¬ trieben, wobei der untere Wellenstumpf 16 eine Antriebskraft synchron weiter- leitet. In the exemplary embodiment, with a total of odd number of upper rollers 4 and lower rollers 8, at least the middle upper roller 4 is driven via the shaft stub 15. The opposite lower roller 8 is also driven, wherein the lower stub shaft 16 forwards a driving force synchronously.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Rollensegment1 roll segment
2 Stützrollengerüst2 support roller frame
3 Oberrahmen3 upper frame
4 Oberrolle4 upper part
4a Teillänge4a partial length
4b Teillänge4b partial length
5a Ecke eines Polygons5a corner of a polygon
5b Ecke eines Polygons5b corner of a polygon
5c Ecke eines Polygons5c corner of a polygon
5d Ecke eines Polygons5d corner of a polygon
6 Kolben-Zylinder-Einheit6 piston-cylinder unit
7 Unterrahmen7 subframe
8 Unterrolle8 sub-roll
8a Teillänge8a part length
8b Teillänge8b partial length
9a Ständerbauteil9a stand component
9b Ständerbauteil9b stator component
10 Führung10 leadership
11 Innenlager11 bottom bracket
12 Außenlager12 outdoor storage
13 Messeinrichtung13 measuring device
13a innere Messeinrichtung13a inner measuring device
14 unabhängiges Paar aus Kolben-Zylinder-Einheiten14 independent pair of piston-cylinder units
14a Kolben-Zylinder-Einheit14a piston-cylinder unit
14b Kolben-Zylinder-Einheit14b piston-cylinder unit
15 oberer Wellenstumpf15 upper stub shaft
16 unterer Wellenstumpf16 lower stub shaft
17 Losseite Festseite17 Losseite fixed side
Querwandpartition
Traversetraverse
KranöseLifting eye
Gelenk joint

Claims

Patentansprüche claims
1. Verfahren zum Bestimmen der Kernerstarrung und / oder der Sumpfspit¬ ze beim Stranggießen von Metallen, insbesondere von Stahl, in einem Rollensegment (1) eines Stützrollengerüstes (2), dessen die Oberrollen (4) tragenden Oberrahmen (3) über in den Ecken (6a, 6b, 6c, 6d ) eines1. A method for determining the core solidification and / or the Sumpfspit¬ ze in continuous casting of metals, especially steel, in a roller segment (1) of a support roller frame (2), the upper rollers (4) supporting the upper frame (3) over in the corners (6a, 6b, 6c, 6d) of a
Polygons angeordnete hydraulische Kolben-Zylinder-Einheiten (6) gegen die Unterrollen (8) eines Unterrahmens (7) auf die jeweilige Strangdicke antriebsmäßig eingestellt werden, dadurch gekennzeichnet, dass über ein unabhängiges Paar (14) aus Kolben-Zylinder-Einheiten (6) mit externer Messeinrichtung (13) oder innerer Messeinrichtung (13a) für das Anstellen einer drehangetriebenen, einzelnen Oberrolle (4) die Messwerte beim Positions- oder Kraftregeln zum Feststellen der Lage der Kernerstarrung und / oder der Sumpfspitze im Gießstrang berück- sichtigt werden.Polygons arranged hydraulic piston-cylinder units (6) against the lower rollers (8) of a subframe (7) are driven to the respective strand thickness, characterized in that via an independent pair (14) of piston-cylinder units (6) with external measuring device (13) or internal measuring device (13a) for adjusting a rotationally driven, individual top roller (4), the measured values for position or force rules for determining the position of the core solidification and / or the sump tip in the cast strand are taken into account.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Messwerte an mehreren Rollensegmenten (1) mit zumindest jeweils einem Paar (14) aus unabhängigen Kolben-Zylinder-Einheiten2. The method according to claim 1, characterized in that the measured values at a plurality of roller segments (1) with at least one respective pair (14) of independent piston-cylinder units
(14a, 14b) gleichzeitig gemessen und alle Messdaten zu einem Mittel¬ wert verarbeitet werden.(14a, 14b) are measured simultaneously and all measured data are processed to a mean value.
3. Rollensegment (1 ) für ein Stütz- und Treibrollengerüst (2) in Stranggieß- Vorrichtungen für Metalle, insbesondere für Stahlwerkstoffe, mit polygo¬ nal paarweise angeordneten, hydraulischen Kolben-Zylinder-Einheiten (6), bei dem die Rollenabstände der jeweiligen Strangdicke angepasst an der Losseite (17) eines anstellbaren, die Oberrollen (4) tragenden Ober- rahmens (3) zu den Unterrollen (8) des die Festseite (18) bildenden Un¬ terrahmens (7) angestellt werden, dadurch gekennzeichnet, dass im Oberrahmen (3) eine unabhängige zur Befestigung einer exter¬ nen Messeinrichtung (13) oder zumindest einem Paar (14) aus hydrauli- sehen Kolben-Zylinder-Einheiten (14a, 14b) dienenden Traverse (20) mit einer drehangetriebenen, einzelnen Oberrolle (4) zur Messung der Daten für die Kaltstrang- oder die Warmstrangkraft vorgesehen ist.3. roller segment (1) for a supporting and driving roller stand (2) in continuous casting devices for metals, in particular steel materials, with polygo¬ nal pairwise arranged, hydraulic piston-cylinder units (6), wherein the roller spacings of the respective strand thickness adapted to the loose side (17) of an adjustable upper roll (4) bearing upper Frame (3) to the sub-rollers (8) of the fixed side (18) forming the Un¬ terrahmens (7) are employed, characterized in that in the upper frame (3) an independent for fastening an exter¬ nen measuring device (13) or at least one Pair (14) of hydraulic see piston-cylinder units (14a, 14b) serving traverse (20) is provided with a rotationally driven, individual upper roller (4) for measuring the data for the cold strand or the hot extruding force.
4. Rollensegment nach Anspruch 3 dadurch gekennzeichnet, dass bei einer insgesamt ungeraden Anzahl von Oberrollen (4) und Un¬ terrollen (8) zumindest eine mittlere Oberrolle (4) und die gegenüberlie¬ gende Unterrolle (8) angetrieben sind.4. roller segment according to claim 3, characterized in that at an overall odd number of upper rollers (4) and Un¬ terrollen (8) at least one middle upper roller (4) and the gegenüberlie¬ ing lower roller (8) are driven.
5. Rollensegment nach einem der Ansprüche 3 oder 4, gekennzeichnet durch eine Anordnung in Gießrichtung als letztes Rollensegment (1) des Stütz¬ rollengerüstes (2). 5. Roller segment according to one of claims 3 or 4, characterized by an arrangement in the casting direction as the last roller segment (1) of Stütz¬ roll stand (2).
EP05790096A 2004-10-06 2005-09-29 Method and roll segment for determining core solidification and/or the liquid crater tip in the continuous casting of metals, particularly steel materials Withdrawn EP1817125A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048618A DE102004048618A1 (en) 2004-10-06 2004-10-06 Method and roller segment for determining the core solidification and / or the sump tip in the continuous casting of metals, in particular of steel materials
PCT/EP2005/010533 WO2006037555A1 (en) 2004-10-06 2005-09-29 Method and roll segment for determining core solidification and/or the liquid crater tip in the continuous casting of metals, particularly steel materials

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EP1817125A2 true EP1817125A2 (en) 2007-08-15

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US (1) US20070251662A1 (en)
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JP (1) JP2008515638A (en)
KR (1) KR20070057072A (en)
CN (1) CN101035639A (en)
CA (1) CA2582947A1 (en)
DE (1) DE102004048618A1 (en)
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KR20070057072A (en) 2007-06-04
ZA200605635B (en) 2007-09-26
DE102004048618A1 (en) 2006-04-13
CA2582947A1 (en) 2006-04-13
WO2006037555A1 (en) 2006-04-13
UA83551C2 (en) 2008-07-25
RU2006132923A (en) 2008-03-20
TW200615060A (en) 2006-05-16
JP2008515638A (en) 2008-05-15

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