EP3235579B1 - Strand guiding device and method for supporting a cast strand - Google Patents
Strand guiding device and method for supporting a cast strand Download PDFInfo
- Publication number
- EP3235579B1 EP3235579B1 EP17163459.5A EP17163459A EP3235579B1 EP 3235579 B1 EP3235579 B1 EP 3235579B1 EP 17163459 A EP17163459 A EP 17163459A EP 3235579 B1 EP3235579 B1 EP 3235579B1
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- EP
- European Patent Office
- Prior art keywords
- guide roller
- outer contour
- guide
- strip
- strand
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- 238000000034 method Methods 0.000 title claims description 11
- 238000009749 continuous casting Methods 0.000 claims description 42
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 description 81
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 238000004049 embossing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 240000000528 Ricinus communis Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
-
- 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 strand guide device for supporting a casting strand with a rectangular cross section according to the preamble of claim 1 and according to the preamble of claim 3, and a corresponding method.
- strand guiding devices are known according to the prior art, in which guide rollers, so-called foot rollers, with a cylindrical outer contour are used for strand support on the narrow side of the strand shell box.
- a guide roller which has a cylindrical outer contour
- the strand shell box is ideally guided or held in a rectangular shape.
- the casting strand has the tendency to bulge again, due to the ferrostatic internal pressure of the liquid steel and the creeping processes occurring within the strand shell. In such a case, the slab produced then deviates from the desired cross section.
- DE 195 20 939 C1 shows a strand guide device with the features of the preamble of claim 1 and of claim 3.
- the carriers, and thus the rollers attached to them can be adjusted transversely to the direction of withdrawal of the strand.
- the individual rollers which are rotatably mounted on the respective supports, each have a cylindrical cross section and are therefore subject to the disadvantages mentioned above.
- the object of the invention is to optimize the desired shape accuracy with simple means when continuously casting a casting strand.
- a strand guiding device serves to support a casting strand with a rectangular cross section, namely when the casting strand emerges from the continuous casting mold in a transport or withdrawal direction.
- the strand guide device comprises at least one guide roller which is rotatably mounted about an axis of rotation, the guide roller having its outer contour running in the direction of the axis of rotation being able to be brought into contact with the casting strand in order to appropriately guide and support the casting strand.
- the outer contour of the guide roller is convex and designed in such a way that its longitudinal extension along the axis of rotation is adapted to a narrow side of the rectangular casting strand.
- the convex outer contour of the guide roller is of spherical design, the convex curve of the guide roller that curves outwards begins directly at the end faces of the guide roller and runs in the direction of the central region of the guide roller.
- the convex, convex outer contour of the guide roller is designed such that the largest diameter of the outer contour of the guide roller compared to a diameter of the guide roller at the roller ends, i.e. assumes a maximum of 1.5 on its face and a minimum of 1.0.
- the strand guide device comprises at least one guide roller which is rotatably mounted about an axis of rotation, the guide roller being brought into contact with the casting strand with its outer contour extending in the direction of the axis of rotation can to guide and support the casting strand appropriately.
- the outer contour of the guide roller is of convex convex design, the largest diameter of the outer contour of the guide roller compared to a diameter of the guide roller at the roller ends, ie on its end face, taking a maximum ratio of 1.5 and a minimum of 1.0.
- Such a guide roller can be provided to be used either against the narrow side of a casting strand or against the long side of a casting strand.
- the outer contour of the guide roller is designed such that its longitudinal extension along the axis of rotation is adapted to a narrow side of the rectangular casting strand.
- the present invention also provides a method for supporting a casting strand with a rectangular cross-section, in which at least one rotatably mounted guide roller has a convex, convex outer contour and the guide roller with this outer contour is set against one side of the casting strand while the casting strand exits the continuous casting mold still has elastic properties in an area near the edge.
- the guide roller can be placed against a narrow side of the casting strand or against a long side of the casting strand.
- a plurality of guide rollers, each with a spherically convex outer contour, can also be provided, at least one guide roller being set against a narrow side of the casting strand, and at least one further guide roller being set against a longitudinal side of the casting strand.
- the invention is based on the essential finding that the continuous shell of the casting strand, as long as it has elastic properties in a region near the edge immediately after leaving the continuous casting mold, due to the contact with the guide rollers, which, as explained, have a convex convex outer contour targeted concave shape is imposed, which counteracts the striving of the strand shell to bulge.
- the measure for the crowning of the outer contour of a guide roller is suitably matched to the respective manufacturing parameters and the type of steel produced. This means that the crown of the outer contour, which is determined by the ratio of the largest diameter of the roller surface to the diameter at the roller ends of the guide roller, is only chosen to be as large as is necessary to compensate for the efforts of the strand shell to bulge .
- the convex, convex outer contour of a guide roller is optimized for the individual problem that presents itself for a certain type of steel and its manufacturing parameters.
- the spherically convex outer contour of a guide roller can be designed differently to suit the individual case, the ratio of the largest diameter of the roller surface to the diameter of the roller surface at the roller ends, i.e. on an end face of the guide roller in the range between 1.5 and 1.0.
- the outer contour of the guide roller can be suitably adapted to the respective application.
- the bulging of the casting strand or a slab can be compensated for without excessive edge effects.
- the extent to which the outer contour of a guide roller is convexly spherical is eliminated with the endeavor of the strand shell of the cast strand to bulge to zero.
- a desired uniform rectangular shape is formed for the strand shell in cross section.
- the at least one guide roller of the strand guide device is rotatably received in a cage holder.
- a cage holder is characterized by a robust and inexpensive construction, and ensures a secure rotary holder for the guide roller, also taking into account the considerable forces that act on the guide roller during continuous casting.
- the tendency of the strand shell of a casting strand to bulge can be counteracted by providing a plurality of guide rollers, namely aligned one behind the other in the transport direction of the casting strand.
- all these guide rollers are rotatably received together in a cage holder of the strand guide device.
- guide rollers which are aligned one behind the other, are each provided with a different convex convex outer contour.
- a connecting device is provided with which the strand guiding device can be attached to a continuous casting mold or adjacent thereto in a form-fitting manner.
- the guide rollers are subjected to pronounced wear during continuous casting.
- the connecting device makes it possible to remove the strand guiding device from the continuous casting mold, if necessary, and to replace it with a new strand guiding device.
- a lifting device for the strand guiding device can be provided, by means of which the strand guiding device can be raised in the vertical direction.
- Such a lifting device can be designed as a ring eye that e.g. can be attached to an upper side of the cage holder, e.g. through a screw connection.
- the strand guide device By equipping the strand guide device according to the invention with the mentioned connecting device, it is thus possible to provide an exchangeable roller unit for the continuous casting, which can be exchanged in a short time if necessary - either in the event of wear or to adapt to special steel types.
- the strand guiding device can be lifted vertically upwards out of the continuous casting mold by means of the lifting device by a crane or the like.
- the strand guiding device also comprises an elongated copper plate, which - as seen in the transport direction of the casting strand - is provided upstream of the guide roller (s).
- the copper plate can expediently be attached to the cage holder mentioned.
- the cage holder, in which form at least one Guide roller is rotatably mounted, and the attached copper plate is an advantageous exchange module that can be quickly removed from the continuous casting mold when required and can thus be replaced.
- the present invention provides a strand guide device 10 for guiding and supporting a casting strand 12, the strand guide device 10 having at least one rotatably mounted guide roller 14 for this purpose.
- a guide roller 14 is each shown in cross section.
- the guide rollers 14 are each rotatably mounted about an axis of rotation 16 and have one in the longitudinal extent outer contour 18 running along the axis of rotation 16, which is convexly convex.
- a maximum diameter D_max of a guide roller 14, which is present approximately in a central region 20 thereof, is larger than a minimum diameter D_min of the guide roller, which is present on a roller end or on an end face 19 of the guide roller 14.
- the configuration of the spherically convex outer contour 18 of a guide roller 14 is selected such that the ratio of the maximum diameter D_max of the roller surface to the minimum diameter at one end of the roller or on one end face of the guide roller 14 fulfills the condition: 1.5 ⁇ D _ Max / D _ min ⁇ 1.0 .
- FIGS Figures 1a, 1b 1c illustrates that the radii for the convex outer contour 18, with which the crowning for the individual guide rollers 14 is defined, are different.
- the diameter of the outer contour 18 of the guide roller 14 increases starting from the end face 19 in the direction of the central region 20 up to a turning point W, the increase or the increase in the diameter decreasing again from this turning point until the central region 20 is reached.
- the curved course of the outer contour 18 up to the turning point W, starting from the end face 19, is due to a first Radius R1 is defined, the curved shape of the outer contour 18 between the turning point W and the central region 20 being defined by a second radius R2.
- the first and second radius R1, R2 can each have a value of 1 mm or more, as a result of which "soft" curves are guaranteed for the outer contour 18.
- the radii R1, R2 and the turning point W are shown only for the region of the guide roller 14 to the left of the center. It goes without saying that the guide roller 14 is preferably designed symmetrically with respect to its center, so that the radii R1, R2 and the turning point W for the outer contour 18 are also provided in the area to the right of the center.
- FIG. 1b Another feature of the embodiment according to Fig. 1b consists in that the central region 20 of the outer contour 18 of the guide roller 14 has an invariable diameter and is therefore cylindrical.
- the embodiment according to Fig. 1c is characterized in that its outer contour 18 is formed by a continuous convex curve without an inflection point, which curve can have one or more radii.
- This curve which is curved outwards, can have a predetermined distance from the end face 19 of the guide roller 14, wherein in the illustration according to Fig. 1c this predetermined distance is zero.
- the predetermined distance from the end face 19 at which the curved curve for the outer contour 18 starts has a value of up to 50 mm.
- a combination of 1b and 1c possible.
- the outwardly curved curve of the outer contour 18, as in FIG Fig. 1c illustrates, in its central region 20 may have a cylindrical region with a constant diameter, as in the Fig. 1b illustrated.
- a guide roller 14 of the strand guide device 10 serves the purpose of being placed against a strand shell box 21 of the casting strand 12.
- a guide roller 14 is pressed or set against a narrow side 22 of the casting strand 12, which has a rectangular cross section. It can be seen that here a length of the guide roller 14 along its axis of rotation 16 is shorter than a length of the narrow side 22 of the casting strand 12. In this way, the outer contour 18 of a guide roller 14 with its longitudinal extension along the axis of rotation 16 is on the narrow side 22 of the Casting strand 12 adapted with a rectangular cross section.
- the narrow side 22 of the casting strand 12 Upon contact with the spherically convex outer contour 18 of a guide roller 14, the narrow side 22 of the casting strand 12 is forced to have a correspondingly concave embossing, as is shown in the respective cross-sectional views of FIG 1a-1c is illustrated.
- this concave embossing for the examples according to the 1a-1c on the narrow side 22 of the casting strand 12, is introduced into the edge region of the casting strand 12 as long as it still has elastic properties.
- Fig. 2 shows a further embodiment for a strand guide device 10 according to the invention, here both in a perspective view (upper region of FIG Fig. 2 ) as well as in a side view (lower area of Fig. 2 ).
- the strand guide device 10 comprises a cage holder 24, on or in which a plurality of guide rollers 14 are rotatably mounted.
- a copper plate 26 is provided, which is attached to the cage holder 24.
- the copper plate 26 is provided upstream of the cage holder 24.
- a strand guiding device 10 For the embodiment of a strand guiding device 10 according to Fig. 2 It is pointed out separately that the combination of a cage holder 24 with a copper plate 26 attached to it forms an exchange module 27 which can be exchanged or replaced in a short time if necessary.
- this exchange module 27 according to the representation of Fig. 2 - It should be provided that a plurality of guide rollers 14 is attached to the cage holder 24. Deviating from the representation in Fig. 2 can also be provided that only a single guide roller 14 is rotatably mounted on the cage holder 24.
- a plurality of guide rollers 14 are attached to the cage holder 24, it is pointed out in this regard that their outer contour 18 each has a different-sized crown, with the proviso that the crown, ie the aforementioned quotient D_max / D_min increases in the direction of the transport movement T of the casting strand 12.
- the crowning of a corresponding guide roller 14 becomes greater the further from a (in Fig. 2 (not shown) continuous casting mold is objected to.
- the strand guiding device 10 as an exchange module 27 is made possible in that it has a connecting device 28, by means of which the strand guiding device 10 is attached to a continuous casting mold 30 ( Fig. 3 ) or can be attached positively adjacent to it.
- this connecting device is designed in the form of a lateral bolt 28, which can snap into a complementary holding device 29 of the continuous casting mold 30 or an associated adjusting element 31.
- a lifting device 32 for example in the form of a ring eye, is screwed onto an upper side of the copper plate 26.
- the strand guiding device 10 can be lifted in the vertical direction by a crane or the like, in order to either be inserted into the continuous casting mold 30 or lifted out of it.
- the continuous casting mold 30 is shown partially disassembled for the purpose of a simplified illustration. It can thus be seen in which way a strand guiding device 10 can be attached to the continuous casting mold 30.
- a strand guiding device 10 is shown such that its bolts 28 are located just above the holding devices 29, which are provided at the free ends of the respective adjusting elements 31.
- a strand guiding device 10 is shown in a state when it is lifted out of the continuous casting mold 30.
- Figure 4 shows a perspective view of the continuous casting mold 30 of FIG Fig. 3 , now in a state when two strand guiding devices 10 are attached to the adjusting devices 31 of the continuous casting mold 30. Here the bolts 28 are then latched into the associated holding devices 29, which results in a form-fitting attachment of the strand guiding device 10 to the continuous casting mold 30.
- Fig. 5 shows a further perspective view of the continuous casting mold 30, now in a state when both strand guiding devices 10 are lifted up out of the continuous casting mold 30.
- the strand guiding devices 10 can be lifted out in such a way that pulling means are attached to the ring eyes 30 and then pulled upwards by a crane or the like.
- the Fig. 6 and Fig. 7 each show a perspective view of the continuous casting mold 30 of FIG Fig. 3 in a state when a front part 34 of the continuous casting mold 30 is mounted thereon.
- the strand guiding devices 10 are shown in detail in FIG Fig. 6 lifted out of the continuous casting mold 30 (in the same way as in Fig. 5 ), and in the representation of Fig. 7 used within the continuous casting mold. In order to clarify a transport or withdrawal direction of the casting strand 12 in relation to the continuous casting mold 30, this direction is shown in FIG Fig. 7 symbolized by the arrow "T".
- the strand guiding devices 10 when they are mounted in the continuous casting mold 30, serve the purpose of guiding a casting strand with a rectangular cross-section on its narrow side and thereby supporting it appropriately.
- the guide rollers 14 of the strand guiding devices 10 come into contact with the casting strand 12 immediately after the casting strand 12 has emerged from the continuous casting mold 30.
- an edge region of the casting strand 12, with which the spherical-convex guide rollers 14 come into contact still has elastic properties.
- a strand guiding device 10 can also have a guide roller which is brought into contact with a long side of the casting strand 12.
- a guide roller 15 also has a convex, convex outer contour, as described above with reference to FIG Fig. 1 explains, and serves that the introduction of a targeted concave embossing in the long side of the casting strand counteracts the attempt to bulge the strand shell and thus compensates for such bulging.
- the functioning of a guide roller 15, which is brought into contact with the long side of a casting strand corresponds mutatis mutandis to the functioning of a guide roller 14, which is set against the narrow side 12 of the casting strand 12.
- a strand guiding device 10 for supporting a casting strand 12 with a rectangular cross section can have a plurality of guide rollers 14, 15, which are positioned both against the narrow side 22 of the casting strand 12 and against the longitudinal side of the casting strand 12, namely at a point in time when the casting strand 12 still has elastic properties on both its narrow and long sides in regions near the edges.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
Description
Die Erfindung betrifft eine Strangführungseinrichtung zum Stützen eines Gießstrangs mit rechteckigen Querschnitt nach dem Oberbegriff von Anspruch 1 und nach dem Oberbegriff von Anspruch 3, und ein entsprechendes Verfahren.The invention relates to a strand guide device for supporting a casting strand with a rectangular cross section according to the preamble of claim 1 and according to the preamble of claim 3, and a corresponding method.
Nach dem Stand der Technik sind beim Stranggießen von Brammen mit einem rechteckigem Querschnitt Strangführungseinrichtungen bekannt, bei denen Führungsrollen, sog. Fußrollen, mit einer zylindrischen Außenkontur zur Strangstützung an der Schmalseite des Strangschalenkastens eingesetzt werden. In
Ein weiterer Nachteil bei der Verwendung von Führungsrollen mit einer zylindrischen Außenkontur zum Stützen von Brammen besteht darin, dass an deren Kanten höhere Druckkräfte auftreten, weil die Strangschale durch den Innendruck des Flüssigstahls gegen die Rollenkante gepresst wird. Dies führt bei einer zu starken Anstellung der Führungsrolle gegen den Strangschalenkasten zu Druckstellen, die sich als sichtbare Laufbahnen auf der fertigen Bramme abbilden können.Another disadvantage of using guide rollers with a cylindrical outer contour for supporting slabs is that higher compressive forces occur at their edges because the strand shell is pressed against the edge of the roller by the internal pressure of the liquid steel. If the guide roller is set too strongly against the strand shell box, this leads to pressure points which can be shown as visible tracks on the finished slab.
Aus
Vorprofilierung unterzogen, indem Rollen mit konvexen Außenkontur in die Oberfläche der Strangschale an deren Längsseite hineingedrückt werden. In Folge dessen wird an der Oberfläche des Gießstrangs an dessen Längsseite eine konkave Rille ausgebildet, wobei die konkave Rille durch den Einsatz von weiteren Rollen mit größerem Durchmesser vergrößert bzw. nachgeformt wird. Jedenfalls kommt es durch den Kontakt der Rollen mit konvexer Außenkontur zu einer dauerhaften Verformung des Gießstrangs, die nicht reversibel ist.Pre-profiled by pressing rollers with a convex outer contour into the surface of the strand shell on its long side. As a result, a concave groove is formed on the surface of the casting strand on the long side thereof, the concave groove being enlarged or reshaped by the use of further rollers with a larger diameter. In any case, the contact of the rollers with the convex outer contour leads to permanent deformation of the cast strand, which is not reversible.
Aus dem Artikel von
Entsprechend liegt der Erfindung die Aufgabe zugrunde, beim Stranggießen eines Gießstrangs dessen gewünschte Formgenauigkeit mit einfachen Mitteln zu optimieren.Accordingly, the object of the invention is to optimize the desired shape accuracy with simple means when continuously casting a casting strand.
Diese Aufgabe wird durch eine Strangführungseinrichtung mit den in Anspruch 1 bzw. in Anspruch 3 angegebenen Merkmalen, und durch ein Verfahren gemäß Anspruch 15 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert.This object is achieved by a strand guiding device with the features specified in claim 1 and in claim 3, and by a method according to
Eine Strangführungseinrichtung nach der vorliegenden Erfindung dient zum Stützen eines Gießstrangs mit rechteckigem Querschnitt, nämlich wenn der Gießstrang in einer Transport- bzw. Abzugsrichtung aus der Stranggieß-Kokille austritt. Zu diesem Zweck umfasst die Strangführungseinrichtung zumindest eine Führungsrolle, die um eine Rotationsachse drehbar gelagert ist, wobei die Führungsrolle mit ihrer in Richtung der Rotationsachse verlaufenen Außenkontur mit dem Gießstrang in Kontakt gebracht werden kann, um den Gießstrang geeignet zu führen und zu stützen. Die Außenkontur der Führungsrolle ist konvex und derart ausgebildet, dass sie mit ihrer Längserstreckung entlang der Rotationsachse an eine Schmalseite des rechteckigen Gießstrangs angepasst ist. Dies bedeutet im Sinne der vorliegenden Erfindung, dass eine Gesamtlänge der Führungsrolle in Richtung ihrer Rotationsachse, und somit auch der Verlauf der ballig konvexen Außenkontur dieser Führungsrolle, maximal einer Länge des Strangschalenkastens an der Schmalseite des rechteckigen Gießstrangs entsprechen. Hierbei ist die konvexe Außenkontur der Führungsrolle ballig ausgebildet, wobei die konvex nach außen gewölbte Kurve der Führungsrolle unmittelbar an den Stirnseiten der Führungsrolle beginnt und in Richtung des mittigen Bereichs der Führungsrolle verläuft.A strand guiding device according to the present invention serves to support a casting strand with a rectangular cross section, namely when the casting strand emerges from the continuous casting mold in a transport or withdrawal direction. For this purpose, the strand guide device comprises at least one guide roller which is rotatably mounted about an axis of rotation, the guide roller having its outer contour running in the direction of the axis of rotation being able to be brought into contact with the casting strand in order to appropriately guide and support the casting strand. The outer contour of the guide roller is convex and designed in such a way that its longitudinal extension along the axis of rotation is adapted to a narrow side of the rectangular casting strand. In the sense of the present invention, this means that a total length of the guide roller in the direction of its axis of rotation, and thus also the course of the convex outer contour of this guide roller, corresponds at most to a length of the strand shell box on the narrow side of the rectangular casting strand. Here, the convex outer contour of the guide roller is of spherical design, the convex curve of the guide roller that curves outwards begins directly at the end faces of the guide roller and runs in the direction of the central region of the guide roller.
In vorteilhafter Weiterbildung der Erfindung ist die ballig konvexe Außenkontur der Führungsrolle derart ausgebildet, dass der größte Durchmesser der Außenkontur der Führungsrolle im Vergleich zu einem Durchmesser der Führungsrolle an den Rollenenden, d.h. an ihrer Stirnseite maximal den Wert 1,5 und minimal den Wert 1,0 annimmt.In an advantageous further development of the invention, the convex, convex outer contour of the guide roller is designed such that the largest diameter of the outer contour of the guide roller compared to a diameter of the guide roller at the roller ends, i.e. assumes a maximum of 1.5 on its face and a minimum of 1.0.
Nach einer weiteren Ausgestaltung der erfindungsgemäßen Strangführungseinrichtung umfasst diese zumindest eine Führungsrolle, die um eine Rotationsachse drehbar gelagert ist, wobei die Führungsrolle mit ihrer in Richtung der Rotationsachse verlaufenen Außenkontur mit dem Gießstrang in Kontakt gebracht werden kann, um den Gießstrang geeignet zu führen und zu stützen. Die Außenkontur der Führungsrolle ist ballig konvex ausgebildet, wobei der größte Durchmesser der Außenkontur der Führungsrolle im Vergleich zu einem Durchmesser der Führungsrolle an den Rollenenden, d.h. an ihrer Stirnseite in dem Verhältnis maximal den Wert 1,5 und minimal den Wert 1,0 annimmt. Eine solche Führungsrolle kann dazu vorgesehen sein, entweder gegen die Schmalseite eines Gießstrangs oder gegen die Längsseite eines Gießstrangs angestellt zu werden.According to a further embodiment of the strand guide device according to the invention, it comprises at least one guide roller which is rotatably mounted about an axis of rotation, the guide roller being brought into contact with the casting strand with its outer contour extending in the direction of the axis of rotation can to guide and support the casting strand appropriately. The outer contour of the guide roller is of convex convex design, the largest diameter of the outer contour of the guide roller compared to a diameter of the guide roller at the roller ends, ie on its end face, taking a maximum ratio of 1.5 and a minimum of 1.0. Such a guide roller can be provided to be used either against the narrow side of a casting strand or against the long side of a casting strand.
In vorteilhafter Weiterbildung der zuletzt genannten Ausführungsform ist die Außenkontur der Führungsrolle derart ausgebildet, dass sie mit ihrer Längserstreckung entlang der Rotationsachse an eine Schmalseite des rechteckigen Gießstrangs angepasst ist.In an advantageous development of the last-mentioned embodiment, the outer contour of the guide roller is designed such that its longitudinal extension along the axis of rotation is adapted to a narrow side of the rectangular casting strand.
Die vorliegende Erfindung sieht auch ein Verfahren zum Stützen eines Gießstrangs mit rechteckigem Querschnitt vor, bei dem zumindest eine drehbar gelagerte Führungsrolle eine ballig konvexe Außenkontur aufweist und die Führungsrolle mit dieser Außenkontur gegen eine Seite des Gießstrangs angestellt wird, während der Gießstrang, nach dem Austreten aus der Stranggieß-Kokille, in einem randnahen Bereich noch elastische Eigenschaften aufweist. Hierbei kann die Führungsrolle gegen eine Schmalseite des Gießstrangs oder gegen eine Längsseite des Gießstrangs angestellt werden. Es können auch mehrere Führungsrollen mit jeweils einer ballig konvexen Außenkontur vorgesehen sein, wobei zumindest eine Führungsrolle gegen eine Schmalseite des Gießstrangs angestellt wird, und wobei zumindest eine weitere Führungsrolle gegen eine Längsseite des Gießstrangs angestellt wird.The present invention also provides a method for supporting a casting strand with a rectangular cross-section, in which at least one rotatably mounted guide roller has a convex, convex outer contour and the guide roller with this outer contour is set against one side of the casting strand while the casting strand exits the continuous casting mold still has elastic properties in an area near the edge. The guide roller can be placed against a narrow side of the casting strand or against a long side of the casting strand. A plurality of guide rollers, each with a spherically convex outer contour, can also be provided, at least one guide roller being set against a narrow side of the casting strand, and at least one further guide roller being set against a longitudinal side of the casting strand.
Der Erfindung liegt die wesentliche Erkenntnis zugrunde, dass der Strangschale des Gießstrangs, solange dieser unmittelbar nach dem Verlassen der Stranggieß-Kokille in einem randnahen Bereich noch elastische Eigenschaften aufweist, durch den Kontakt mit den Führungsrollen, die wie erläutert eine ballig konvexe Außenkontur aufweisen, eine gezielt konkave Formgebung aufgezwungen wird, die dem Bestreben der Strangschale zu einer Ausbauchung entgegenwirkt. Hierbei ist das Maß für die Balligkeit der Außenkontur einer Führungsrolle geeignet auf die jeweiligen Herstellungsparameter und die erzeugte Stahlsorte abgestimmt. Dies bedeutet, dass die Balligkeit der Außenkontur, die sich durch das Verhältnis des größten Durchmessers der Rollenoberfläche zu dem Durchmesser an den Rollenenden der Führungsrolle bestimmt, gerade nur so groß gewählt ist, wie es für eine Kompensation des Bestrebens der Strangschale zu einem Ausbauchen notwendig ist. Jedenfalls ist für die Erfindung von Bedeutung, dass durch den Kontakt der Strangschale des Gießstrangs mit einer Führungsrolle der Strangführungseinrichtung keine dauerhafte Umformung des Gießstrangs an der Stelle des Kontakts mit der Führungsrolle entstehen soll. Dies wird dadurch gewährleistet, dass die Führungsrolle der Strangführungseinrichtung mit dem Gießstrang zu einem Zeitpunkt in Kontakt gebracht wird, während der Gießstrang noch elastische Eigenschaften aufweist.The invention is based on the essential finding that the continuous shell of the casting strand, as long as it has elastic properties in a region near the edge immediately after leaving the continuous casting mold, due to the contact with the guide rollers, which, as explained, have a convex convex outer contour targeted concave shape is imposed, which counteracts the striving of the strand shell to bulge. Here, the measure for the crowning of the outer contour of a guide roller is suitably matched to the respective manufacturing parameters and the type of steel produced. This means that the crown of the outer contour, which is determined by the ratio of the largest diameter of the roller surface to the diameter at the roller ends of the guide roller, is only chosen to be as large as is necessary to compensate for the efforts of the strand shell to bulge . In any case, for the invention of Meaning that contact of the strand shell of the casting strand with a guide roller of the strand guide device should not result in permanent deformation of the casting strand at the point of contact with the guide roller. This is ensured in that the guide roller of the strand guide device is brought into contact with the casting strand at a point in time while the casting strand still has elastic properties.
Die ballig konvexe Außenkontur einer Führungsrolle ist auf die individuelle Problemstellung hin optimiert, die sich für eine bestimmte Stahlsorte und deren Herstellungsparameter darstellt. Entsprechend kann die ballig konvexe Außenkontur einer Führungsrolle in Anpassung an den Einzelfall verschieden ausgebildet sein, wobei sich das Verhältnis des größten Durchmessers der Rollenfläche zum Durchmesser der Rollenoberfläche an den Rollenenden, d.h. an einer Stirnseite der Führungsrolle in dem Bereich zwischen 1,5 und 1,0 bewegt. Innerhalb dieses Bereichs der beiden genannten Durchmesser relativ zu einander kann die Außenkontur der Führungsrolle auf den jeweiligen Einsatzfall geeignet angepasst sein.The convex, convex outer contour of a guide roller is optimized for the individual problem that presents itself for a certain type of steel and its manufacturing parameters. Correspondingly, the spherically convex outer contour of a guide roller can be designed differently to suit the individual case, the ratio of the largest diameter of the roller surface to the diameter of the roller surface at the roller ends, i.e. on an end face of the guide roller in the range between 1.5 and 1.0. Within this range of the two diameters mentioned relative to one another, the outer contour of the guide roller can be suitably adapted to the respective application.
Dank der ballig konvexen Ausbildung der Außenkontur einer Führungsrolle, die gegen eine Seite des Gießstrangs unmittelbar nach dessen Verlassen der Stranggieß-Kokille angestellt wird, lässt sich die Ausbauchung des Gießstrangs bzw. einer Bramme ohne zu starke Kanteneffekte kompensieren.Thanks to the spherically convex design of the outer contour of a guide roller, which is placed against one side of the casting strand immediately after it leaves the continuous casting mold, the bulging of the casting strand or a slab can be compensated for without excessive edge effects.
Idealerweise hebt sich das Maß, mit dem die Außenkontur einer Führungsrolle konvex ballig ausgebildet ist, mit dem Bestreben der Strangschale des Gießstrangs zu einem Ausbauchen zu Null auf. Im Ergebnis dieser Wechselwirkung, die aus dem Kontakt der ballig konvexen Außenkontur einer Führungsrolle mit der Strangschale des Gießstrangs resultiert, bildet sich für die Strangschale im Querschnitt eine gewünschte gleichmäßige Rechteckform.Ideally, the extent to which the outer contour of a guide roller is convexly spherical is eliminated with the endeavor of the strand shell of the cast strand to bulge to zero. As a result of this interaction, which results from the contact of the spherically convex outer contour of a guide roller with the strand shell of the cast strand, a desired uniform rectangular shape is formed for the strand shell in cross section.
In vorteilhafter Weiterbildung der Erfindung ist die zumindest eine Führungsrolle der Strangführungseinrichtung in einer Käfighalterung drehbar gelagert aufgenommen. Eine solche Käfighalterung zeichnet sich durch einen robusten und preiswerten Aufbau aus, und gewährleistet eine sichere Drehhalterung für die Führungsrolle auch unter Berücksichtigung der beträchtlichen Kräfte, die beim Stranggießen auf die Führungsrolle einwirken.In an advantageous development of the invention, the at least one guide roller of the strand guide device is rotatably received in a cage holder. Such a cage holder is characterized by a robust and inexpensive construction, and ensures a secure rotary holder for the guide roller, also taking into account the considerable forces that act on the guide roller during continuous casting.
In vorteilhafter Weiterbildung der Erfindung kann vorgesehen sein, dass mehrere Führungsrollen mit jeweils einer ballig konvexen Außenkontur vorgesehen sind, wobei zumindest eine Führungsrolle gegen die Schmalseite eines Gießstrangs angestellt wird, und wobei zumindest eine weitere Führungsrolle gegen die Längsseite des Gießstrangs angestellt wird.In an advantageous development of the invention, it can be provided that several guide rollers, each with a convex convex outer contour, are provided, at least one guide roller being set against the narrow side of a casting strand, and at least one further guide roller being set against the longitudinal side of the casting strand.
Der Tendenz der Strangschale eines Gießstrangs zum Ausbauchen kann nach einer vorteilhaften Weiterbildung der Erfindung dadurch entgegengewirkt werden, dass mehrere Führungsrollen vorgesehen sind, nämlich in der Transportrichtung des Gießstrangs fluchtend hintereinander. Zweckmäßigerweise sind alle diese Führungsrollen gemeinsam in einer Käfighalterung der Strangführungseinrichtung drehbar gelagert aufgenommen.According to an advantageous development of the invention, the tendency of the strand shell of a casting strand to bulge can be counteracted by providing a plurality of guide rollers, namely aligned one behind the other in the transport direction of the casting strand. Advantageously, all these guide rollers are rotatably received together in a cage holder of the strand guide device.
In vorteilhafter Weiterbildung der Erfindung sind Führungsrollen, die fluchtend hintereinander angeordnet sind, jeweils mit einer unterschiedlichen ballig konvexen Außenkontur versehen. Entsprechend bestehen für die fluchtend hintereinander angeordneten Führungsrollen unterschiedliche Konturausprägungen in Bezug auf deren ballig konvexe Außenkontur. Hierbei kann vorgesehen sein, dass bei einer Führungsrolle, die - in der Transportrichtung des Gießstrangs gesehen - weiter von der Stranggieß-Kokille beanstandet ist, der Quotient gebildet aus größtem Durchmesser der Außenkontur bzw. der Rollenoberfläche zum Durchmesser der Führungsrolle an ihrer Stirnseite größer ist als im Vergleich zu einer Führungsrolle, die - in der Transportrichtung des Gießstrangs gesehen - sich näher an der Stranggieß-Kokille befindet. In dieser Weise wird durch die Mehrzahl von Führungsrollen mit einer Balligkeit, die in der Transportrichtung des Gießstrangs zunimmt, ein schonendes Stützen für die Strangschale des Gießstrangs erreicht, um gleichzeitig dabei dem unerwünschten Ausbauchen der Strangschale entgegenzuwirken.In an advantageous further development of the invention, guide rollers, which are aligned one behind the other, are each provided with a different convex convex outer contour. Correspondingly, there are different contours for the guide rollers, which are aligned one behind the other, with respect to their convex, convex outer contour. It can be provided that in the case of a guide roller, which - viewed in the transport direction of the casting strand - is further objected to by the continuous casting mold, the quotient formed from the largest diameter of the outer contour or the roller surface and the diameter of the guide roller is greater on its front side than compared to a guide roller, which - seen in the direction of transport of the casting strand - is closer to the continuous casting mold. In this way, the A plurality of guide rollers with a crown which increases in the direction of transport of the casting strand achieve gentle support for the strand shell of the casting strand, in order to simultaneously counteract the undesired bulging of the strand shell.
In vorteilhafter Weiterbildung der Erfindung ist eine Verbindungseinrichtung vorgesehen, mit der die Strangführungseinrichtung an einer Stranggieß-Kokille oder angrenzend dazu formschlüssig angebracht werden kann. Die Führungsrollen werden beim Stranggießen einem ausgeprägten Verschleiß unterworfen. Entsprechend ist es durch die Verbindungseinrichtung möglich, die Strangführungseinrichtung bei Bedarf von der Stranggieß-Kokille zu demontieren, und durch eine neue Strangführungseinrichtung auszutauschen. Zu diesem Zweck kann eine Hebeeinrichtung für die Strangführungseinrichtung vorgesehen sein, mittels der die Strangführungseinrichtung in vertikaler Richtung nach oben angehoben werden kann. Eine solche Hebeeinrichtung kann als Ringauge ausgebildet sein, das z.B. an einer Oberseite der Käfighalterung befestigbar ist, z.B. durch eine Schraubverbindung.In an advantageous further development of the invention, a connecting device is provided with which the strand guiding device can be attached to a continuous casting mold or adjacent thereto in a form-fitting manner. The guide rollers are subjected to pronounced wear during continuous casting. Accordingly, the connecting device makes it possible to remove the strand guiding device from the continuous casting mold, if necessary, and to replace it with a new strand guiding device. For this purpose, a lifting device for the strand guiding device can be provided, by means of which the strand guiding device can be raised in the vertical direction. Such a lifting device can be designed as a ring eye that e.g. can be attached to an upper side of the cage holder, e.g. through a screw connection.
Durch eine Ausstattung der erfindungsgemäßen Strangführungseinrichtung mit der genannten Verbindungseinrichtung ist es somit möglich, eine austauschbare Rolleneinheit für das Stranggießen bereitzustellen, die bei Bedarf - entweder im Falle eines Verschleißes oder zur Anpassung an spezielle Stahlsorten - in kurzer Zeit ausgetauscht werden kann. Zu diesem Zweck kann die Strangführungseinrichtung mittels der Hebeeinrichtung von einem Kran oder dergleichen vertikal nach oben aus der Stranggieß-Kokille herausgehoben werden.By equipping the strand guide device according to the invention with the mentioned connecting device, it is thus possible to provide an exchangeable roller unit for the continuous casting, which can be exchanged in a short time if necessary - either in the event of wear or to adapt to special steel types. For this purpose, the strand guiding device can be lifted vertically upwards out of the continuous casting mold by means of the lifting device by a crane or the like.
In vorteilhafter Weiterbildung der Erfindung umfasst die Strangführungseinrichtung auch eine längliche Kupferplatte, die - in der Transportrichtung des Gießstrangs gesehen - stromaufwärts der Führungsrolle(n) vorgesehen ist. Zweckmäßigerweise kann hierbei die Kupferplatte an der genannten Käfighalterung angebracht sein. In dieser Weise bilden die Käfighalterung, in der zumindest eine Führungsrolle drehbar gelagert aufgenommen ist, und die daran angebrachte Kupferplatte ein vorteilhaftes Austauschmodul, dass bei Bedarf schnell von der Stranggieß-Kokille demontiert werden kann und sich somit austauschen lässt.In an advantageous further development of the invention, the strand guiding device also comprises an elongated copper plate, which - as seen in the transport direction of the casting strand - is provided upstream of the guide roller (s). In this case, the copper plate can expediently be attached to the cage holder mentioned. In this way, the cage holder, in which form at least one Guide roller is rotatably mounted, and the attached copper plate is an advantageous exchange module that can be quickly removed from the continuous casting mold when required and can thus be replaced.
Nachstehend sind Ausführungsbeispiele der Erfindung anhand einer schematisch vereinfachten Zeichnung im Detail beschrieben.Exemplary embodiments of the invention are described in detail below on the basis of a schematically simplified drawing.
Es zeigen:
- Fig. 1a-c
- jeweils Seitenansichten von Führungsrollen nach verschiedenen Ausführungsformen der vorliegenden Erfindung,
- Fig. 2
- eine Perspektivansicht und eine Seitenansicht einer erfindungsgemäßen Strangführungseinrichtung,
- Fig. 3-5
- jeweils Perspektivansichten einer, zu Zwecken der Veranschaulichung, teilweise demontierten Stranggieß-Kokille (Ausschnitt der Gießform), in Verbindung mit Strangführungseinrichtungen nach der vorliegenden Erfindung,
- Fig. 6
- eine Perspektivansicht einer Stranggießkokille (Ausschnitt der Gießform), aus der Strangführungseinrichtungen nach der vorliegenden Erfindung herausgehoben sind,
- Fig. 7
- eine Perspektivansicht einer Stranggießkokille (Ausschnitt der Gießform), in der Strangführungseinrichtungen nach der vorliegenden Erfindung bestimmungsgemäß eingebaut sind, und
- Fig. 8
- eine Seitenansicht einer herkömmlichen Führungsrolle.
- 1a-c
- side views of guide rollers according to various embodiments of the present invention,
- Fig. 2
- 2 shows a perspective view and a side view of a strand guide device according to the invention,
- Fig. 3-5
- perspective views of a continuous casting mold (part of the casting mold), partly dismantled for the purpose of illustration, in connection with strand guiding devices according to the present invention,
- Fig. 6
- 2 shows a perspective view of a continuous casting mold (section of the casting mold) from which the strand guiding devices according to the present invention are lifted,
- Fig. 7
- a perspective view of a continuous casting mold (section of the mold), in the strand guide devices according to the present invention are installed as intended, and
- Fig. 8
- a side view of a conventional guide roller.
Die vorliegende Erfindung sieht eine Strangführungseinrichtung 10 zum Führen und Stützen eines Gießstrangs 12 vor, wobei die Strangführungseinrichtung 10 zu diesem Zweck zumindest eine drehbar gelagerte Führungsrolle 14 aufweist.The present invention provides a
In den
Ein Vergleich der verschiedenen Ausführungsformen für eine Führungsrolle 14 nach den
Bei den Ausführungsformen gemäß
Bei der Ausführungsform gemäß
Für eine vereinfachte Darstellung sind bei der Ausführungsform von
Ein weiteres Merkmal der Ausführungsform gemäß
Die Ausführungsform gemäß
Nach einer weiteren (nicht dargestellten) Ausführungsform ist z.B. eine Kombination der
Eine Führungsrolle 14 der Strangführungseinrichtung 10 dient zu dem Zweck, gegen einen Strangschalenkasten 21 des Gießstrangs 12 angestellt zu werden. In den
In den
Bei einem Kontakt mit der ballig konvexen Außenkontur 18 einer Führungsrolle 14 wird der Schmalseite 22 des Gießstrangs 12 eine entsprechend konkave Prägung aufgezwungen, wie dies in den jeweiligen Querschnittsansichten der
Für die Ausführungsform einer Strangführungseinrichtung 10 gemäß
Falls an der Käfighalterung 24 mehrere Führungsrollen 14 angebracht sind, so wird diesbezüglich darauf hingewiesen, dass deren Außenkontur 18 jeweils eine unterschiedlich große Balligkeit aufweist, mit der Maßgabe, dass die Balligkeit, d.h. der vorstehend genannte Quotient D_max/D_min, in Richtung der Transportbewegung T des Gießstrangs 12 zunimmt. Anders ausgedrückt, wird die Balligkeit einer entsprechenden Führungsrolle 14 umso größer, je weiter sie von einer (in
Der Einsatz der erfindungsgemäßen Strangführungseinrichtung 10 als Austauschmodul 27 wird dadurch ermöglicht, dass sie eine Verbindungseinrichtung 28 aufweist, mittels der die Strangführungseinrichtung 10 an einer Stranggieß-Kokille 30 (
In der Perspektivansicht gemäß
Die
Für das Ausführungsbeispiel nach den
Gemäß einer weiteren vorteilhaften Ausführungsform kann eine Strangführungseinrichtung 10 auch eine Führungsrolle aufweisen, die in Kontakt mit einer Längsseite des Gießstrangs 12 gebracht wird. Beispielsweise ist eine solche Führungsrolle in der Darstellung von
Schließlich sei darauf hingewiesen, dass eine Strangführungseinrichtung 10 nach der vorliegenden Erfindung zum Stützen eines Gießstrangs 12 mit rechteckigem Querschnitt mehrere Führungsrollen 14, 15 aufweisen kann, die sowohl gegen die Schmalseite 22 des Gießstrangs 12 als auch gegen die Längsseite des Gießstrangs 12 angestellt werden, nämlich zu einem Zeitpunkt, wenn der Gießstrang 12 in randnahen Bereichen sowohl an seiner Schmal - und Längsseite noch elastische Eigenschaften aufweist.Finally, it should be pointed out that a
- 1010th
- StrangführungseinrichtungStrand guiding device
- 1212
- GießstrangCasting strand
- 1414
- Führungsrolle (an der Schmalseite des Gießstrangs 12)Guide roller (on the narrow side of the casting strand 12)
- 1515
- Führungsrolle (an der Längsseite des Gießstrangs 12)Guide roller (on the long side of the casting strand 12)
- 1616
- Rotationsachse (der Führungsrolle 14)Axis of rotation (of the guide roller 14)
- 1818th
- Außenkontur (der Führungsrolle 14)Outer contour (of the guide roller 14)
- 1919th
- Stirnseite (der Führungsrolle 14)End face (of the guide roller 14)
- 2020th
- Mittiger Bereich (der Führungsrolle 14)Central area (of the guide roller 14)
- 2121
- Strangschalenkasten (des Gießstrangs 12)Strand shell box (of casting strand 12)
- 2222
- Schmalseite (des Gießstrangs 12)Narrow side (of casting strand 12)
- 2323
- Flüssiger Sumpf (innerhalb des Gießstrangs 12)Liquid sump (within the casting strand 12)
- 2424th
- KäfighalterungCage bracket
- 2626
- KupferplatteCopper plate
- 2727th
- AustauschmodulExchange module
- 2828
- VerbindungseinrichtungConnecting device
- 2929
- HalteeinrichtungHolding device
- 3030th
- Stranggieß-KokilleContinuous casting mold
- 3131
- Verstelleinrichtung (der Stranggieß-Kokille 30)Adjusting device (the continuous casting mold 30)
- 3232
- HebeeinrichtungLifting device
- 3434
- Vorderer Teil (der Stranggieß-Kokille 30)Front part (the continuous casting mold 30)
- 3636
- Herkömmliche zylindrische RolleConventional cylindrical roller
- TT
- Transportrichtung (des Gießstrangs 12)Direction of transport (of the casting strand 12)
Claims (19)
- Strip guide device (10) for supporting a cast strip (12) with a rectangular cross-section, comprising
at least one guide roller (14; 15), which is mounted to be rotatable about an axis (16) of rotation, wherein the guide roller (14; 15) can be brought into contact by its outer contour (18), which extends in the direction of the axis (16) of rotation, with the cast strip (12) to be supported,
wherein the outer contour (18) of the guide roller (14; 15) is formed to be convex, characterised in that
the convex outer contour of the guide roller (14; 15) is of spherical configuration and
the largest diameter (D_max) of the outer contour (18) of the guide roller (14; 15) by comparison with a diameter (D_min) of the guide roller (14) at its end (19) is in the ratio: 1.5 ≤ D_max / D_min ≤ 1.0. - Strip guide device (10) according to claim 1, characterised in that the outer contour (18) of the guide roller (14) is formed in such a way that it is adapted by its length dimension along the axis (16) of rotation to a narrow side (22) of the rectangular cast strip (12).
- Strip guide device (10) for supporting a cast strip (12) with a rectangular cross-section, comprising
at least one guide roller (14; 15), which is mounted to be rotatable about an axis (16) of rotation, wherein the guide roller (14; 15) can be brought into contact by its outer contour (18), which extends in the direction of the axis (16) of rotation, with the cast strip (12) to be supported,
wherein the outer contour (18) of the guide roller (14) is of convex configuration and it is adapted by its length direction along the axis (16) of rotation to a narrow side (22) of the cast strip (12),
characterised in that
the convex outer contour of the guide roller (14; 15) is of spherical form and
the convex, outwardly curved curve of the guide roller (14) begins directly at the ends (19) of the guide roller (14) and extends in the direction of the central region (20) of the guide roller (14). - Strip guide device (10) according to claim 3, characterised in that the largest diameter (D_max) of the outer contour (18) of the guide roller (14) by comparison with a diameter (D_min) of the guide roller (14) at its end (19) is in the ratio: 1.5 ≤ D_max/ D_min ≤ 1.0.
- Strip guide device (10) according to any one of the preceding claims, characterised in that the at least one guide roller (14) is received in a cage mount (24) to be rotatably mounted.
- Strip guide device (10) according to any one of the preceding claims, characterised in that several guide rollers (14) are arranged in alignment one behind the other in the transport direction (T) of the cast strip (12), preferably in that the guide rollers (14) are all received in the cage mount (24) to be rotatably mounted.
- Strip guide device (10) according to claim 6, characterised in that of the plurality of guide rollers (14) at least two guide rollers (14) have a differently configured spherically convex outer contour (18) by comparison with one another, preferably such that for the individual guide rollers (14) the sphericality of the outer contour (18) increases downstream of the transport direction (T) of the cast strip (12) in such a way that the quotient of largest diameter (D_max) of the outer contour (18) of a guide roller (14) to the diameter (D_min) of this guide roller (14) at the end thereof is increasing.
- Strip guide device (10) according to claim 6 or 7, characterised in that the guide rollers (14) are differently adjustable relative to a side of the cast strip (12).
- Strip guide device (10) according to any one of the preceding claims, characterised in that an elongate copper plate (26) is provided upstream of the guide roller or rollers (14) in the transport direction (T) of the cast strip (12), preferably such that the copper plate (26) is connected with the cage mount (24).
- Strip guide device (10) according to any one of the preceding claims, characterised in that several guide rollers (14; 15) each with a spherically convex outer contour (18) are provided, wherein the outer contour (18) of at least one guide roller (14) is adapted by the length dimension thereof along the axis (16) of rotation to a narrow side (22) of the cast strip (12) and wherein the outer contour (18) of at least one further guide roller (15) is adapted by the length dimension thereof along the axis (16) of rotation thereof to a long side of the cast strip (12).
- Strip guide device (10) according to any one of the preceding claims, characterised in that a connecting device (28) is provided, with which the strip guide device (10) can be brought into mechanically positive connection at a continuous casting mould (30) or adjacent thereto, preferably in that a lifting device (32) is provided, by means of which the strip guide device (10) is raisable in vertical direction.
- Strip guide device (10) according to any one of the preceding claims, characterised in that the outer contour (18) of the guide roller (14; 15) is formed in such a way that a diameter of the guide roller (14; 15) increases from an end (19) in the direction of a central region (20) of the guide roller up to a turning point (W), wherein from this turning point (W) the increase in the diameter of the guide roller (14; 15) decreases again until reaching the central region (20) thereof, preferably such that the curved course of the outer contour (18) of the guide roller (14; 15) from the end to the turning point (W) is defined by a first radius (R1) and between the turning point (W) in the central region of the guide roller by a second radius (R2), more preferably that the first and second radii (R1; R2) each adopt a value of at least one 1 millimetre.
- Strip guide device (10) according to any one of claims 1 to 11, characterised in that the outer contour (18) of the guide roller (14; 15) is formed by a continuously convex, outwardly curved curve without a turning point and of one or more radii, preferably such as the outer contour arises in the form of the convex, outwardly curved curve at a predetermined spacing from an end of the guide roller (14; 15).
- Strip guide device (10) according to claim 11 or 12, characterised in that the outer contour of the guide roller (14; 15) in the central region thereof has an unchanging diameter so that this central region of the guide roller (14; 15) is cylindrical.
- Method of supporting a cast strip (12) with a rectangular cross-section, in which at least one rotatably mounted guide roller (14) has a spherically convex outer contour (18) and the guide roller (14) is adjusted by this outer contour (18) against a side of the cast strip (12), whilst the cast strip (12) still has an elastic character in the region near the edge.
- Method according to claim 15, characterised in that the at least one rotatably mounted guide roller (14) is adjusted against a narrow side (22) of the cast strip (12).
- Method according to claim 15 or 16, characterised in that the largest diameter (D_max) of the outer contour (18) of a guide roller (14) by comparison with a diameter (D_min) of the guide roller (14) at the end thereof has the ratio: 1.5 ≤ D_max / D_min ≤ 1.0.
- Method according to any one of claims 15 to 17, characterised in that several guide rollers (14) are provided in alignment in succession in the transport direction (T) of the cast strip (12) and are adjusted in common against a side of the rectangular cast strip (12), preferably such that for the individual guide rollers (14) the sphericality of the outer contour (18) downstream of the transport direction (T) of the cast strip (12) increases in such a way that the quotient of largest diameter (D_max) of the outer contour (18) of the guide roller (14) with respect to the diameter (D_min) of the guide roller (14) at the end thereof is increasing.
- Method according to any one of claims 15 to 18, characterised in that several rotatably mounted guide rollers (14; 15) each with a spherically convex outer contour (18) are provided, wherein at least one guide roller (14) is adjusted against a narrow side (22) of the cast strip (12) and wherein at least one further guide roller (15) is adjusted against a long side (22) of the cast strip (12).
Applications Claiming Priority (2)
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DE102016206454 | 2016-04-18 | ||
DE102017200983.7A DE102017200983A1 (en) | 2016-04-18 | 2017-01-23 | Strand guiding device and method for supporting a cast strand |
Publications (3)
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EP3235579A1 EP3235579A1 (en) | 2017-10-25 |
EP3235579B1 true EP3235579B1 (en) | 2020-05-13 |
EP3235579B2 EP3235579B2 (en) | 2023-08-30 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900066A (en) | 1974-01-02 | 1975-08-19 | Allis Chalmers | Apparatus for continuous casting a metal strand shaped to provide concave surfaces |
GB1596395A (en) | 1977-12-14 | 1981-08-26 | Jernkontoret Forskningsavdelni | Method of continuous casting of steels or metal alloys with segregation tendancy and apparatus for carrying out the method |
DE3427708A1 (en) | 1984-07-27 | 1986-02-06 | Krupp Stahl Ag, 4630 Bochum | Apparatus for the lateral guidance of a strand in a continuous billet-casting plant |
US6070646A (en) | 1994-01-28 | 2000-06-06 | Mannesmann Aktiengesellschaft | Continuous casting apparatus |
JP2003094154A (en) | 2001-09-21 | 2003-04-02 | Sanyo Special Steel Co Ltd | Continuous casting method for steel |
KR20120054440A (en) | 2010-11-19 | 2012-05-30 | 주식회사 포스코 | Apparatus for adding reduction force of strip and method for continuous casting using the same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837392A (en) * | 1971-11-18 | 1974-09-24 | I Rossi | Apparatus for continuously casting steel slabs |
DE4403045C1 (en) * | 1994-01-28 | 1995-09-07 | Mannesmann Ag | Continuous caster for guiding strands |
DE4403047C1 (en) * | 1994-01-28 | 1995-08-10 | Mannesmann Ag | Strand guide frame |
DE19520939C1 (en) | 1995-06-02 | 1996-07-25 | Mannesmann Ag | Continuous casting plant |
DE10119550A1 (en) | 2001-04-21 | 2002-10-24 | Sms Demag Ag | Production of continuously cast pre-material comprises casting strands in a continuous casting device, deforming below the mold and/or within or outside the strand guide using roller pairs to form pre-profiles, and rolling into profiles |
-
2017
- 2017-03-29 EP EP17163459.5A patent/EP3235579B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900066A (en) | 1974-01-02 | 1975-08-19 | Allis Chalmers | Apparatus for continuous casting a metal strand shaped to provide concave surfaces |
GB1596395A (en) | 1977-12-14 | 1981-08-26 | Jernkontoret Forskningsavdelni | Method of continuous casting of steels or metal alloys with segregation tendancy and apparatus for carrying out the method |
DE3427708A1 (en) | 1984-07-27 | 1986-02-06 | Krupp Stahl Ag, 4630 Bochum | Apparatus for the lateral guidance of a strand in a continuous billet-casting plant |
US6070646A (en) | 1994-01-28 | 2000-06-06 | Mannesmann Aktiengesellschaft | Continuous casting apparatus |
JP2003094154A (en) | 2001-09-21 | 2003-04-02 | Sanyo Special Steel Co Ltd | Continuous casting method for steel |
KR20120054440A (en) | 2010-11-19 | 2012-05-30 | 주식회사 포스코 | Apparatus for adding reduction force of strip and method for continuous casting using the same |
Non-Patent Citations (7)
Title |
---|
A. JUNGBAUER ET AL.: "Application of technological packages in slab-caster upgrades", MILLENIUM STEEL, 2006, pages 125 - 130, XP055779740 |
ALAN W. CRAMB: "THE MAKING, SHAPING AND TREATING OF STEEL", 2003, pages: (15)59-(15)60, (22)30 - (22)32, XP055779736 |
CHANG HO MOON ET AL.: "Effect of the Roll Surface Profile on Centerline Segregation in Soft Reduction Process", ISIJ INTERNATIONAL, vol. 52, no. 7, 2012, pages 1266 - 1272, XP002771796, DOI: 10.2355/isijinternational.52.1266 |
DIENER ET AL.: "METALLURGIE DES STRANGGIESSENS,", 1992, pages: 18 - 25, XP055779733 |
H. WAHL ET AL.: "Flexible, modular design of continuous casting equipment", MILLENIUM STEEL, 2005, pages 136 - 142, XP055779742 |
O. SCHULZ ET AL.: "HIGHLIGHTS OF FLAT PRODUCT CASTER REFERENCES STARTING FROM NEW IMPLEMENTATIONS UP TO MODERNIZATIONS", 45TH STEELMAKING SEMINAR, 25 May 2014 (2014-05-25), Porto Alegre, RS, Brazil, pages 174 - 183, XP055779738 |
SHIGEAKI OGIBAYASHI ET AL.: "Deformation Behavior of Continuously Cast Strand during Soft Reduction", TETSU-TO-HAGANE, vol. 83, no. 1, 19 June 2009 (2009-06-19), pages 36 - 41, XP055779722, ISSN: 1883-2954, Retrieved from the Internet <URL:055779722> |
Also Published As
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EP3235579A1 (en) | 2017-10-25 |
EP3235579B2 (en) | 2023-08-30 |
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