EP1365874B1 - Method and device for producing thin slabs - Google Patents
Method and device for producing thin slabs Download PDFInfo
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- EP1365874B1 EP1365874B1 EP01995634A EP01995634A EP1365874B1 EP 1365874 B1 EP1365874 B1 EP 1365874B1 EP 01995634 A EP01995634 A EP 01995634A EP 01995634 A EP01995634 A EP 01995634A EP 1365874 B1 EP1365874 B1 EP 1365874B1
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- 238000000034 method Methods 0.000 title claims description 10
- 238000009749 continuous casting Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims abstract 4
- 238000005266 casting Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 abstract description 7
- 230000008023 solidification Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000009467 reduction Effects 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
Definitions
- the invention relates to a method and an apparatus for producing thin slabs, the cross section of which is reduced during solidification, in a continuous casting plant, the strand guide adjoining the mold having a plurality of segments, each with a plurality of pairs arranged opposite rollers, wherein only one of the segments for changing the thickness of having a liquid Kem strand having a wedge-shaped engagable roller portion.
- a method and a continuous casting of this type are known from DE 44 03 048. It is here immediately below the mold in the directly adjacent first segment a significant reduction in thickness in several steps performed and constructed in the strand interior forced convection.
- the invention has for its object to provide a method and an apparatus of the type mentioned, which allow an optimized LCR (Liquid Core Reduction) and reduce the investment costs.
- LCR Liquid Core Reduction
- This task is achieved for thin slabs in the thickness range of about 40 to 120 mm with a method according to the invention that the strand thickness is reduced below the mold following the first segment by wedge adjustment of the local strand guide rollers with soft transition and mini-reduction. It is hereby implemented the knowledge gained through extensive operating experience that at low thickness reductions, an action on the strand at only one point of the strand guide is sufficient. It no longer needs to be provided with a hydraulic adjustment or adjusting means all segments, which otherwise requires a high investment and maintenance.
- the first segment can be formed simple and easy to maintain.
- the simple design of the first segment is because of the high risk of breakthrough there, especially when special steel grades, such as stainless steel, cast, of particular advantage.
- the simple construction of the arranged between the mold and the reduction region segments also creates in modemizations the requirement to maintain the existing segments for this strand guide area, which limits the modernization effort only to a portion of the continuous casting machine or plant and thus lowers the investment costs.
- such a mode of operation of the continuous casting can be realized in which the sump or the liquid Kem as far as possible shifted down and Enderstarrung can always be achieved in the same area of the strand guide. This is independent of the respective width of the strand to be cast and the casting speed.
- the thickness is reduced in the range of 1 to 25 mm, depending on the casting format and the exact location of the mini-reduction, within the strand guide, of the salaried segment.
- the concrete location of the action of the impact on the strand is thus crucial for the corresponding degree of thickness reduction to be carried out.
- a pivot point and outlet side preferably force and / or position-controlled adjusting means and is provided on that strand guide element which the mold immediately downstream segment (3) follows. It is thus at least the first of the mold following segment is not used for the thickness reduction and thus remains in his from the outset parallel position of the strand guide rollers, so that no hydraulic jobs are required for this segment.
- a simpler and less expensive wedge adjustment is achieved as a whole wedge adjustment via adjusting means due to the inlet-side pivot point.
- a preferred embodiment of the invention provides that the mini-reduction performing segment is divided and only the arranged in the upper part of the segment strand guide rollers are employed against the strand.
- the segments of the strand guide subsequent, driven rollers of the bending driver are assigned to the lot side adjusting cylinder.
- These on the lot side - the fixed side is in continuous casting usually in the direction of the pans with the liquid molten steel providing turret - arranged cylinders bring the advantage that they automatically adjust to the thickness of the strand.
- the oscillatingly driven mold 2 shown in FIGS. 1 to 3 consisting of a plurality of segments 3 and 4 or n, respectively, and the bending guide 6 adjoining it in the strand extension direction 5.
- the segments 3, 4 and n are provided with numerous supporting the strand 7 guide rollers 8.
- the bending driver 6 has successive, mutually opposite pairs of driven rollers 9a, 9b, each lying on the lot side I of the continuous casting 1
- Biegetrreiber rollers 9b hydraulic adjusting cylinder 10 are assigned.
- Some of the segments of the strand guide are assigned from the fixed side II of the continuous casting plant 1 with their piston rods to roller carriers 11 and 11a, 11b attacking actuating cylinder 12.
- the mini reduction in the thickness of the strand 7 in the region of the liquid core 13 is carried out directly in the segment 4 following the first segment 3, specifically only by means of the roller carrier 11a of this functionally divided segment 4.
- the roller carrier 11 a has inlet side a pivot point 14 and is pivoted by means of the bottom of the roller carrier 11 a engaging actuating cylinder 12 in the wedge position shown to reduce the thickness of the strand 7.
- By means of the roller carrier 11b - or to the or the roller carrier 11 of the adjoining sub-segment or the following segments n - attacking actuating cylinder 12 is achieved over a very long distance continuous parallel segment employment and thus a large operating window.
- the final staring - cf. the sump tip 15 - of the strand 7 takes place in the region of the last segment n, but can easily continue to move up or down there over a large area, depending on the respective casting conditions and specifications.
- the last segment n of the strand guide is subdivided according to FIG. 2, and the upper roller carrier 11a is made wedge-shaped about the pivot point 14.
- the upper roller carrier 11a is made wedge-shaped about the pivot point 14.
- All versions have in common that at least the mold 2 subsequent first segment 3 - as shown in FIGS. 2 and 3 also continue the or the following segments 4 - get along without hydraulic jobs, which reduces the investment and maintenance costs decided. Especially for the first segment 3, which is particularly vulnerable to breakthrough, thus a maintenance-friendly training of the continuous casting plant 1 and its strand guide is achieved.
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- Producing Shaped Articles From Materials (AREA)
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Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Herstellen von Dünnbrammen, deren Querschnitt während der Erstarrung reduziert wird, in einer Stranggießanlage, deren an die Kokille anschließende Strangführung mehrere Segmente mit jeweils mehreren Paaren gegenüber angeordneter Rollen aufweist, wobei nur eines der Segmente zur Dickenänderung des einen flüssigen Kem aufweisenden Stranges einen keilförmig anstellbaren Rollenabschnitt aufweist.The invention relates to a method and an apparatus for producing thin slabs, the cross section of which is reduced during solidification, in a continuous casting plant, the strand guide adjoining the mold having a plurality of segments, each with a plurality of pairs arranged opposite rollers, wherein only one of the segments for changing the thickness of having a liquid Kem strand having a wedge-shaped engagable roller portion.
Ein Verfahren und eine Stranggießanlage dieser Art sind aus der DE 44 03 048 bekannt. Es wird hier sofort unterhalb der Kokille in dem sich direkt anschließenden ersten Segment eine erhebliche Dickenreduktion in mehreren Schritten durchgeführt und im Stranginneren eine Zwangskonvektion aufgebaut.A method and a continuous casting of this type are known from DE 44 03 048. It is here immediately below the mold in the directly adjacent first segment a significant reduction in thickness in several steps performed and constructed in the strand interior forced convection.
Bei einer Vorband-Gießanlage ist es durch die EP 0 450 391 B1 bekanntgeworden, zur Stützung des Metall-Gießstranges, insbesondere zur Weichreduktion (auch "soft reduction" genannt), unterhalb der Stranggießkokille zu beiden Seiten des Gießstranges spiegelbildlich gegenüberliegende Rollenträger vorzusehen, deren Rollen mit dem Strang in Wirkverbindung stehen. Jeder Rollenträger ist in einem feststehenden Rahmen angeordnet und in mehrere Rollen tragende Segmente aufgeteilt, denen Verstelleinrichtungen zugeordnet sind. Die Rollen tragenden Segmente sind derart gelenkig aneinander gekoppelt, dass jedes Segment für sich in einem beliebigen Winkel zum Strang verstellt und eingestellt werden kann. Hierzu werden mechanische, hydraulische oder mechanisch-hydraulische Verstelleinrichtungen eingesetzt.In a Vorband-casting plant, it has become known from EP 0 450 391 B1, to support the metal cast strand, in particular for soft reduction (also called "soft reduction"), provided underneath the continuous casting mold on both sides of the cast strand mirror image opposing roll carrier whose roles are in operative connection with the strand. Each roller carrier is arranged in a fixed frame and divided into several roles bearing segments, which are associated with adjustment. The rollers carrying segments are hinged together so that each segment can be adjusted and adjusted by itself at any angle to the strand. For this purpose, mechanical, hydraulic or mechanical-hydraulic adjusting devices are used.
Aus der DE 196 39 297 A1 sind ein Verfahren und eine Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung bekannt. Der Strangquerschnitt wird hierbei linear über eine Mindestlänge der Strangführung unmittelbar unterhalb der Kokille reduziert. Mit der sich anschließenden weiteren Strangquerschnittsreduktion über die restliche Strangführung ("soft reduction") bis maximal unmittelbar vor der Enderstarrung bzw. der Sumpfspitze des flüssigen Kerns wird eine kritische Deformation des Stranges unter Berücksichtigung der Gießgeschwindigkeit sowie auch der Stahlgüte ausgeschaltet. Ein Stranggießen mit ebenfalls einer Verteilung der Dickenreduktion über die Länge der Strangführung ist weiterhin durch die EP 0 611 610 A1 bekanntgeworden, wobei sich dort dem Gießen des Stranges noch ein Warmwalzen von zuvor von dem Strang abgetrennten Brammen bestimmter Längen anschließt.From DE 196 39 297 A1 a method and an apparatus for high-speed continuous casting plants with a strand thickness reduction during solidification are known. The strand cross-section is linear over a Minimum length of the strand guide immediately below the mold reduced. With the subsequent further strand cross-section reduction over the remaining strand guide ("soft reduction") to a maximum immediately before the final solidification or the bottom tip of the liquid core, a critical deformation of the strand is eliminated taking into account the casting speed and the steel grade. Continuous casting, also with a distribution of thickness reduction over the length of the strand guide, has furthermore become known from EP 0 611 610 A1, where there is still hot rolling of slabs of particular lengths previously separated from the strand, followed by casting of the strand.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, die eine optimierte LCR-(Liquid Core Reduction) ermöglichen und den Anlagenaufwand verringern.The invention has for its object to provide a method and an apparatus of the type mentioned, which allow an optimized LCR (Liquid Core Reduction) and reduce the investment costs.
Diese Aufgabe wird für Dünnbrammen im Dickenbereich von etwa 40 bis 120 mm mit einem Verfahren erfindungsgemäß dadurch gelöst, dass die Strangdicke unterhalb des der Kokille folgenden ersten Segmentes durch Keilanstellung der dortigen Strangführungsrollen mit weichem Übergang und Mini-Reduktion verringert wird. Es wird hiermit die durch umfangreiche Betriebserfahrungen gewonnene Erkenntnis umgesetzt, dass bei geringen Dickenreduzierungen eine Einwirkung auf den Strang an nur einer Stelle der Strangführung ausreichend ist. Es brauchen damit nicht mehr alle Segmente mit einer hydraulischen Anstellung bzw. Stellmitteln versehen zu sein, was ansonsten einen hohen Investitions- und Wartungsaufwand erfordert.This task is achieved for thin slabs in the thickness range of about 40 to 120 mm with a method according to the invention that the strand thickness is reduced below the mold following the first segment by wedge adjustment of the local strand guide rollers with soft transition and mini-reduction. It is hereby implemented the knowledge gained through extensive operating experience that at low thickness reductions, an action on the strand at only one point of the strand guide is sufficient. It no longer needs to be provided with a hydraulic adjustment or adjusting means all segments, which otherwise requires a high investment and maintenance.
Vor allem kann auf jeden Fall zumindest das sich der Kokille unmittelbar anschließende, erste Segment einfach und instandhaltungsfreundlich ausgebildet werden. Die einfache Bauweise des ersten Segmentes ist wegen der dort hohen Durchbruchgefährdung, vorrangig wenn besondere Stahlgüten, z.B. Edelstähle, vergossen werden, von besonderem Vorteil. Die einfache Bauweise der zwischen der Kokille und dem Reduktionsbereich angeordneten Segmente schafft weiterhin bei Modemisierungen auch die Voraussetzung, die vorhandenen Segmente für diesen Strangführungsbereich beizuhalten, wodurch sich der Modernisierungsaufwand nur auf einen Teilbereich der Stranggießmaschine bzw. -anlage beschränkt und damit die Investitionskosten senkt. Außerdem läßt sich eine solche Betriebsweise der Stranggießanlage verwirklichen, bei der der Sumpf bzw. der flüssige Kem so weit wie möglich nach unten verlagert und eine Enderstarrung im stets gleichen Bereich der Strangführung erreicht werden kann. Dies ist unabhängig von der jeweiligen Breite des gerade zu vergießenden Stranges und der Gießgeschwindigkeit.Above all, in any case, at least the immediately subsequent to the mold, the first segment can be formed simple and easy to maintain. The simple design of the first segment is because of the high risk of breakthrough there, especially when special steel grades, such as stainless steel, cast, of particular advantage. The simple construction of the arranged between the mold and the reduction region segments also creates in modemizations the requirement to maintain the existing segments for this strand guide area, which limits the modernization effort only to a portion of the continuous casting machine or plant and thus lowers the investment costs. In addition, such a mode of operation of the continuous casting can be realized in which the sump or the liquid Kem as far as possible shifted down and Enderstarrung can always be achieved in the same area of the strand guide. This is independent of the respective width of the strand to be cast and the casting speed.
Nach einem Vorschlag der Erfindung wird die Dicke abhängig vom Gießformat und dem genauen Ort des innerhalb der Strangführung die Mini-Reduktion durchführenden, angestellten Segmentes im Bereich von 1 bis 25 mm verringert. Der konkrete Ort des Geschehens der Einwirkung auf den Strang ist somit ausschlaggebend für den entsprechend vorzunehmenden Grad der Dickenreduzierung.According to one proposal of the invention, the thickness is reduced in the range of 1 to 25 mm, depending on the casting format and the exact location of the mini-reduction, within the strand guide, of the salaried segment. The concrete location of the action of the impact on the strand is thus crucial for the corresponding degree of thickness reduction to be carried out.
Bei einer Vorrichtung zum Durchführen des Verfahren weist erfindungsgemäß der zur Dichenänderung des einen flüssigen Kern aufweisenden Stranges vorgesehene keilförmig anstellbare Rollenabschnitt einlaufseitig einen Drehpunkt und auslaufseitig vorzugsweise kraft- und/oder positionsgeregelte Stellmittel auf und ist an demjenigen Strangführungselement vorgesehen, welches dem der Kokille unmittelbar nachgeschalteten Segment (3) folgt. Es wird damit zumindest das erste der Kokille folgende Segment nicht für die Dickenreduzierung benutzt und verbleibt damit in seiner von vornherein parallelen Lage der Strangführungsrollen, so dass für dieses Segment keine hydraulischen Anstellungen benötigt werden. Für das jeweils keilförmig anzustellende, an einer Stelle in der Strangführung nachgeschaltete Segment wird aufgrund des einlaufseitigen Drehpunktes eine einfachere und weniger aufwendige Keilanstellung als bei einer gesamten Keilanstellung über Stellmittel erreicht.In a device for carrying out the method according to the invention provided for changing the Dichenänderung of a liquid core strand having wedge-engagable roller portion on the inlet side a pivot point and outlet side preferably force and / or position-controlled adjusting means and is provided on that strand guide element which the mold immediately downstream segment (3) follows. It is thus at least the first of the mold following segment is not used for the thickness reduction and thus remains in his from the outset parallel position of the strand guide rollers, so that no hydraulic jobs are required for this segment. For each wedge-shaped to be set, downstream at a point in the strand guide segment a simpler and less expensive wedge adjustment is achieved as a whole wedge adjustment via adjusting means due to the inlet-side pivot point.
Eine bevorzugte Ausführung der Erfindung sieht vor, dass das die Mini-Reduktion durchführende Segment unterteilt ist und nur die in dem oberen Teilsegment angeordneten Strangführungsrollen gegen den Strang angestellt sind.A preferred embodiment of the invention provides that the mini-reduction performing segment is divided and only the arranged in the upper part of the segment strand guide rollers are employed against the strand.
Mittels dieses dann oben den Drehpunkt und auslaufseitig das bzw. die Stellmittel aufweisenden Teilsegmentes wird erreicht, dass sich der Keilanstellung auf jeden Fall noch ein paralleler Abschnitt der Strangführung auch dann anschließt, wenn die Keilanstellung im letzten Segment der Strangführung erfolgt.By means of this then above the fulcrum and the outlet side or the adjusting means having sub-segment is achieved that the wedge adjustment in any case, a parallel section of the strand guide also followed, when the wedge adjustment in the last segment of the strand guide.
Nach einem Vorschlag der Erfindung sind den sich den Segmenten der Strangführung anschließenden, angetriebenen Rollen des Biegetreibers auf der Losseite Anstellzylinder zugeordnet. Diese auf der Losseite - die Festseite liegt bei Stranggießanlagen in der Regel in Richtung des die Pfannen mit der flüssigen Stahlschmelze bereitstellenden Drehturms - angeordneten Zylinder bringen den Vorteil mit sich, daß sie sich automatisch auf die Dicke des Stranges einstellen.According to a proposal of the invention, the segments of the strand guide subsequent, driven rollers of the bending driver are assigned to the lot side adjusting cylinder. These on the lot side - the fixed side is in continuous casting usually in the direction of the pans with the liquid molten steel providing turret - arranged cylinders bring the advantage that they automatically adjust to the thickness of the strand.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von in den Zeichnungen dargestellten Ausführungsbeispielen.
Es zeigen:
Figur 1- von einer Stranggießanlage in schematischer Ansicht eine Durchlaufkokille mit sich daran anschließender Strangführung und nachgeschaltetem Biegetreiber mit im zweiten Strangführungs-Segment ausgebildeter Dicken-Reduzierung;
Figur 2- eine der Fig. 1 entsprechende Darstellung mit demgegenüber einer Dicken-Reduzierung im oberen Teil des letzten Strangführungs-Segment; und
Figur 3- eine der Fig. 2 entsprechende Darstellung mit demgegenüber zur Dicken-Reduzierung einer Keilanstellung des gesamten letzten Strangführungs-Segmentes.
Show it:
- FIG. 1
- of a continuous casting in a schematic view of a continuous mold with adjoining strand guide and downstream bending driver with trained in the second strand guide segment thickness reduction;
- FIG. 2
- a representation corresponding to Figure 1 with contrast, a thickness reduction in the upper part of the last strand guide segment. and
- FIG. 3
- one of the Fig. 2 corresponding representation with contrast to the thickness reduction of a wedge adjustment of the entire last strand guide segment.
Von einer Stranggießanlage 1 sind in den Figuren 1 bis 3 deren oszillierend angetriebene Kokille 2, die aus mehreren Segmenten 3 bzw. 4 bzw. n bestehende Strangführung und der sich dieser in Strangauszugsrichtung 5 anschließende Biegetreiber 6 dargestellt. Die Segmente 3, 4 bzw. n sind mit zahlreichen den Strang 7 stützenden Führungsrollen 8 versehen. Die Biegetreiber 6 besitzt aufeinanderfolgende, einander paarweise gegenüberliegende angetriebene Rollen 9a, 9b, wobei jeweils den auf der Losseite I der Stranggießanlage 1 liegenden Biegetreiber-Rollen 9b hydraulische Anstellzylinder 10 zugeordnet sind. Einigen der Segmente der Strangführung sind von der Festseite II der Stranggießanlage 1 her mit ihren Kolbenstangen an Rollenträger 11 bzw. 11 a, 11 b angreifende Stellzylinder 12 zugeordnet.From a
Bei der Ausführung nach Fig. 1 wird die Mini-Reduktion in der Dicke des Stranges 7 im Bereich des flüssigen Kerns 13 unmittelbar in dem dem ersten Segment 3 folgenden Segment 4 durchgeführt, und zwar dort nur mittels des Rollenträgers 11a dieses funktionsmäßig zweigeteilten Segmentes 4. Der Rollenträger 11 a besitzt einlaufseitig einen Drehpunkt 14 und wird mittels des unten an den Rollenträger 11a angreifenden Stellzylinders 12 in die gezeigte Keilanstellung zur Dicken-Reduzierung des Stranges 7 verschwenkt. Mittels der an den Rollenträger 11b - bzw. an den oder die Rollenträger 11 des sich anschließenden Teilsegmentes bzw. der Folgesegmente n - angreifenden Stellzylinder 12 wird eine über eine sehr lange Strecke andauernde parallele Segmentanstellung und somit ein großes Betriebsfenster erreicht. Die Enderstarrung - vgl. die Sumpfspitze 15 - des Stranges 7 findet im Bereich des letzten Segmentes n statt, kann dort allerdings über einen großen Bereich abhängig von den jeweiligen Gießbedingungen und Vorgaben ohne weiteres weiter nach oben oder nach unten wandern.In the embodiment according to FIG. 1, the mini reduction in the thickness of the strand 7 in the region of the
Im Unterschied zur vorbeschriebenen Ausführung ist gemäß Fig. 2 das letzte Segment n der Strangführung unterteilt und der obere Rollenträger 11a wird um den Drehpunkt 14 keilförmig angestellt. Es liegt hiermit ein definiertes Betriebsfenster mit gleicher Strangdicke und der Enderstarrung (Sumpfspitze 15) im letzten Strangführungs-Segment n vor, allerdings ist die sich anschließende Parallelstrecke hier sehr viel kürzer. Eine bei ansonsten unveränderten Betriebsanlauf weitere Variante der Dickenreduzierung des Stranges ist in Fig. 3 dargestellt. Es wird hier der gesamte Rollenträge 11 des letzten Strangführungs-Segmentes n keilförmig durch Verschwenken um den Drehpunkt 14 angestellt. Wenngleich eine zielgenaue Enderstarrung (vgl. Sumpfspitze 15) problematischer ist, so wird doch auf jeden Fall sichergestellt, daß die Enderstarrung wie bei allen anderen Ausführungen unverändert in dem gleichen Bereich stattfindet, nämlich im letzten Segment n.In contrast to the above-described embodiment, the last segment n of the strand guide is subdivided according to FIG. 2, and the
Allen Ausführungen ist gemeinsam, daß zumindest das sich der Kokille 2 anschließende erste Segment 3 - gemäß den Fig. 2 und 3 weiterhin auch das bzw. die Folgesegmente 4 - ohne hydraulische Anstellungen auskommen, wodurch sich der Investitions- und Wartungsaufwand entschieden verringert. Vor allem für das erste Segment 3, das besonders durchbruchgefährdet ist, wird somit eine instandhaltungsfreundliche Ausbildung der Stranggießanlage 1 bzw. deren Strangführung erreicht.All versions have in common that at least the
Claims (6)
- Method of producing thin slabs, the cross-section of which is reduced during hardening, in a continuous casting plant (1), the strip guide of which adjoining the mould (2) comprises several segments (3, 4, n) each with several pairs of oppositely arranged rollers (8), wherein only one of the segments (3, 4, n) has, for change in thickness of the strip (7) having a liquid core (13), a roller portion (11a) adjustable in wedge shape, characterised in that the strip thickness is reduced below the first segment (3), which follows the mould (2), by wedge adjustment of the strip guide rollers (8) there with soft transition and mini-reduction.
- Method according to claim 1, characterised in that the thickness is reduced in the region of 1 to 25 millimetres depending on the casting format and the exact location of the segment (4 or n) adjusted to carry out the mini-reduction within the strip guide.
- Device for producing thin slabs, the cross-section of which is reduced during hardening, in a continuous casting plant (1), the strip guide of which adjoining the mould comprises several segments (3, 4, n) each with several pairs of oppositely arranged rollers (8), wherein only one of the segments (3, 4, n) has, for change in thickness of the strip having a liquid core (13), a roller portion (11a), which is adjustable in wedge shape and which has a fulcrum (14) at the inlet side and setting means (12) at the outlet side, particularly for carrying out the method according to claim 1, characterised in that the roller portion (11a) adjustable in wedge shape is provided at that strip guide segment (4; n) which follows the segment (3) directly downstream of the mould (2) and is constructed for the mini-reduction of the strip (7).
- Device according to claim 3, characterised in that the setting means (12) are force-regulated and/or position-regulated.
- Device according to claim 3 or 4, characterised in that the segment (4 or n) carrying out the mini-reduction is subdivided and only the strip guide rollers (8) arranged in the upper wedge segment (11a) are adjusted relative to the strip (7).
- Device according to one of claims 3 to 5, characterised in that adjusting cylinders (10) are associated on the movable side (I) with the driven rollers (9b), which adjoin the segments (3, 4 or n) of the strip guide, of the bending driver (6).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10057160 | 2000-11-16 | ||
| DE10057160A DE10057160A1 (en) | 2000-11-16 | 2000-11-16 | Method and device for producing thin slabs |
| PCT/EP2001/013229 WO2002040201A2 (en) | 2000-11-16 | 2001-11-15 | Method and device for producing thin slabs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1365874A2 EP1365874A2 (en) | 2003-12-03 |
| EP1365874B1 true EP1365874B1 (en) | 2006-01-25 |
Family
ID=7663722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01995634A Revoked EP1365874B1 (en) | 2000-11-16 | 2001-11-15 | Method and device for producing thin slabs |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US7069974B2 (en) |
| EP (1) | EP1365874B1 (en) |
| JP (1) | JP3884383B2 (en) |
| KR (1) | KR100819123B1 (en) |
| CN (1) | CN1277636C (en) |
| AT (1) | ATE316431T1 (en) |
| AU (1) | AU2002226335A1 (en) |
| CA (1) | CA2428528C (en) |
| DE (2) | DE10057160A1 (en) |
| ES (1) | ES2257466T3 (en) |
| RU (1) | RU2280532C2 (en) |
| UA (1) | UA76732C2 (en) |
| WO (1) | WO2002040201A2 (en) |
| ZA (1) | ZA200303533B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016575A1 (en) | 2007-04-07 | 2008-10-09 | Sms Demag Ag | A strand guide device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004002783A1 (en) * | 2004-01-20 | 2005-08-04 | Sms Demag Ag | Method and device for determining the position of the sump tip in the casting strand in the continuous casting of liquid metals, in particular of liquid steel materials |
| DE102007006458A1 (en) * | 2007-02-05 | 2008-08-07 | Sms Demag Ag | Continuous casting device for producing steel slabs |
| ITRM20070150A1 (en) * | 2007-03-21 | 2008-09-22 | Danieli Off Mecc | PROCESS AND PLANT FOR THE PRODUCTION OF METAL TAPES |
| AT506835B1 (en) * | 2008-05-16 | 2010-09-15 | Siemens Vai Metals Tech Gmbh | METHOD FOR SAFEGUARDING A HARDWARE IN A CONTINUITY CASTING SYSTEM AND CONTINUOUS CASTING SYSTEM WITH A HARDWARE TRAVEL |
| US7931847B2 (en) * | 2009-08-26 | 2011-04-26 | Microsoft Corporation | Injection molding of part having nonuniform thickness |
| DE102013214939A1 (en) * | 2013-07-30 | 2015-02-05 | Sms Siemag Ag | Casting mill for producing metal strips |
| US20160108488A1 (en) * | 2014-10-15 | 2016-04-21 | Sms Siemag Ag | Process for producing grain-oriented electrical steel strip and grain-oriented electrical steel strip obtained according to said process |
| IT201600116859A1 (en) * | 2016-11-18 | 2018-05-18 | Danieli Off Mecc | CONTINUOUS CASTING DEVICE FOR THIN BRAMMERS |
| IT201800009259A1 (en) * | 2018-10-08 | 2020-04-08 | Danieli Off Mecc | METHOD OF PRODUCTION OF A METAL BELT, AND PRODUCTION PLANT IMPLEMENTING THIS METHOD |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT392029B (en) * | 1988-02-01 | 1991-01-10 | Hulek Anton | CONTINUOUS CASTING SYSTEM FOR CONTINUOUS STEEL |
| DE4010966A1 (en) * | 1990-04-05 | 1991-10-10 | Schloemann Siemag Ag | DEVICE FOR SUPPORTING A METAL CASTING STRAND, IN PARTICULAR FOR SOFT REDUCTION IN A RETURNED MOLDING PLANT |
| JPH0515956A (en) * | 1991-07-11 | 1993-01-26 | Kobe Steel Ltd | Continuous casting method |
| AT398396B (en) * | 1993-02-16 | 1994-11-25 | Voest Alpine Ind Anlagen | METHOD FOR PRODUCING A TAPE, PRE-STRIP OR A LAM |
| AT401744B (en) * | 1993-10-14 | 1996-11-25 | Voest Alpine Ind Anlagen | METHOD AND SYSTEM FOR CONTINUOUS CASTING |
| DE4403048C1 (en) * | 1994-01-28 | 1995-07-13 | Mannesmann Ag | Continuous caster and process for producing rectangular thin slabs |
| US5577754A (en) * | 1994-04-26 | 1996-11-26 | Hwu; Chyn-Herng | Anti-reverse sliding motion mechanism |
| JP3008821B2 (en) * | 1994-07-29 | 2000-02-14 | 住友金属工業株式会社 | Continuous casting method and apparatus for thin slab |
| US6102101A (en) * | 1995-10-18 | 2000-08-15 | Sumitomo Metal Industries, Ltd. | Continuous casting method and apparatus thereof |
| DE19639297C2 (en) * | 1996-09-25 | 2000-02-03 | Schloemann Siemag Ag | Method and device for high-speed continuous casting plants with a reduction in strand thickness during solidification |
| DE19720768C1 (en) * | 1997-05-07 | 1999-01-14 | Mannesmann Ag | Method and device for producing steel slabs |
| DE19933635A1 (en) * | 1999-07-17 | 2001-01-18 | Sms Demag Ag | Method and device for changing the format thickness of the cast strand of a continuous caster in a continuous casting operation |
| DE10011689A1 (en) * | 2000-03-10 | 2001-09-13 | Sms Demag Ag | Process for the continuous casting of slabs and in particular thin slabs |
-
2000
- 2000-11-16 DE DE10057160A patent/DE10057160A1/en not_active Withdrawn
-
2001
- 2001-11-15 JP JP2002542558A patent/JP3884383B2/en not_active Expired - Fee Related
- 2001-11-15 ES ES01995634T patent/ES2257466T3/en not_active Expired - Lifetime
- 2001-11-15 KR KR1020037006598A patent/KR100819123B1/en not_active IP Right Cessation
- 2001-11-15 UA UA2003065543A patent/UA76732C2/en unknown
- 2001-11-15 EP EP01995634A patent/EP1365874B1/en not_active Revoked
- 2001-11-15 AU AU2002226335A patent/AU2002226335A1/en not_active Abandoned
- 2001-11-15 WO PCT/EP2001/013229 patent/WO2002040201A2/en active IP Right Grant
- 2001-11-15 AT AT01995634T patent/ATE316431T1/en not_active IP Right Cessation
- 2001-11-15 RU RU2003117440/02A patent/RU2280532C2/en not_active IP Right Cessation
- 2001-11-15 CN CNB018190154A patent/CN1277636C/en not_active Expired - Fee Related
- 2001-11-15 CA CA002428528A patent/CA2428528C/en not_active Expired - Fee Related
- 2001-11-15 DE DE50108810T patent/DE50108810D1/en not_active Expired - Lifetime
- 2001-11-16 US US10/416,985 patent/US7069974B2/en not_active Expired - Fee Related
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2003
- 2003-05-08 ZA ZA200303533A patent/ZA200303533B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016575A1 (en) | 2007-04-07 | 2008-10-09 | Sms Demag Ag | A strand guide device |
| EP1980344A1 (en) | 2007-04-07 | 2008-10-15 | SMS Demag AG | Strand guiding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2428528C (en) | 2009-07-07 |
| DE50108810D1 (en) | 2006-04-13 |
| WO2002040201A2 (en) | 2002-05-23 |
| JP2004531394A (en) | 2004-10-14 |
| RU2003117440A (en) | 2005-01-20 |
| CN1277636C (en) | 2006-10-04 |
| KR100819123B1 (en) | 2008-04-02 |
| ES2257466T3 (en) | 2006-08-01 |
| KR20030097792A (en) | 2003-12-31 |
| EP1365874A2 (en) | 2003-12-03 |
| ATE316431T1 (en) | 2006-02-15 |
| RU2280532C2 (en) | 2006-07-27 |
| JP3884383B2 (en) | 2007-02-21 |
| UA76732C2 (en) | 2006-09-15 |
| CA2428528A1 (en) | 2002-05-23 |
| US7069974B2 (en) | 2006-07-04 |
| DE10057160A1 (en) | 2002-05-29 |
| US20040035550A1 (en) | 2004-02-26 |
| WO2002040201A3 (en) | 2003-09-12 |
| AU2002226335A1 (en) | 2002-05-27 |
| CN1549753A (en) | 2004-11-24 |
| ZA200303533B (en) | 2004-02-09 |
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