EP2445659B1 - Method and device for processing a slab - Google Patents

Description

The invention relates to a method for processing a slab in a device having at least one furnace, at least one downstream of the furnace in the conveying direction of the slab processing device and one of the at least one processing device in the conveying direction of the slab rolling train, wherein means are provided with which a force can be exerted on the sides of the slab to move the axis of the slab in accordance with a predetermined position transverse to the conveying direction of the slab, in particular in accordance with the axis of the rolling train. Furthermore, the invention relates to a device for processing a slab.

When producing a strip from a slab, for example a thin slab, it is transported in a conveying direction through the processing system. During transport of the thin slab through a tunnel furnace (roller hearth furnace), the slab can run laterally. Subsequent threading into the finishing train becomes more difficult due to this offset. Before the finishing train a stuffer is often provided. Furthermore, side guides are typically arranged to direct the slab to the axis of the rolling train. The stuffer or the mechanical guides must therefore be wide open at the head and are usually adjusted to a narrower guide position only after the safe threading in the first horizontal stand of the finishing train. Because of the unfavorable conditions or because of the risk that slabs get stuck on the stuffer, the stuffer at the top of the slab is not used. A late approach of the stuffer and a late start of the upsetting process would lead to different widths over the strip length.

To improve the center of the slab when leaving the furnace, the reveals DE 601 01 340 T2 a generic method and a corresponding device. After this, a slab centering is provided in the last oven part. Here, guide rollers are briefly driven into the furnace, which contact the side of the slab and exert a force on it, thus centering the slab. However, this is a very maintenance-intensive procedure, since the guides are often exposed to the high furnace temperatures. The disadvantage here is also that the furnace atmosphere is adversely affected by the constant lateral opening of the furnace to the entry of the rollers. Increased scale caking on the oven rolls as well as additional slab scaling are the result. Despite being centered in the oven, there is still a risk that the slab will be laterally behind the oven, ie behind the oven in the conveying direction. In S-shaped or saber-shaped slab shape achievable with the known solution centering is also limited.

Convenient with regard to the centering of the slab would be to arrange a long guide ruler in front of the finishing train, as is known in roughing stands. Such a solution is out of the US 2 072 121 known. However, an increase in the transport length between the furnace and the finishing train, in order to accommodate a long guide, is not possible for reasons of the rolling temperature (temperature losses). Furthermore, because of the surface quality, it is necessary for slab descaling to occur as close as possible before the rolling process. In addition, other processing devices, such as a pair of scissors, are to be accommodated between the furnace and the finishing train.

The DE 43 10 547 C2 also discloses a solution for centering a slab, but also here several and long rulers are used, which in this case come before the finishing train for the above reason out of the question. A similar solution goes out of the JP 63101004 A out.

The present invention has for its object to provide a method of the type mentioned above and a corresponding device, with which it is possible with simple means just before the rolling mill, especially in front of the finishing line to center the slab exactly and to lead and in particular to allow a secure upsetting over the entire slab length. Furthermore, a problem-free rolling at the top and at the end of the slab should be ensured. The rolling process should thus be optimized by accurately introducing the slab into the rolling train. In particular, it is provided to realize the centering and guiding the slab just before the finishing mill so that no appreciable extension of the distance between the furnace and the finishing train is created.

The solution of this object by the invention is procedurally characterized in that first means for exerting a lateral force on the slab at a first location act on the slab and that second means for exerting a lateral force on the slab at a second location on the slab act, wherein the second location in the conveying direction of the slab is spaced from the first location, wherein the first location is behind the furnace and wherein the second location in front of, inside or behind the at least one processing device.

A more specific embodiment of the invention provides that the first location is behind the furnace and before the first of the at least one processing device, and that the second location lies within or behind the first of the at least one processing device.

Rolling in the rolling train may be finish rolling the slab into a belt.

A reliable mode of operation can be ensured if the position of the head of the slab in the region of at least one of the means is detected and the exertion of a lateral force on the slab by the delivery of a Contact element of the agent is started only when the head of the slab has passed the means.

Immediately before the rolling mill, the slab can be subjected to a compression in the direction transverse to the conveying direction. In this case, it is preferably provided that the exertion of a lateral force on the slab by the means before the location of the compression and spaced therefrom takes place.

It can therefore be said that it is preferably provided that the first means for exerting a lateral force on the slab behind the furnace and the second means for exerting a lateral force on the slab spaced therefrom before the stuffer is arranged.

The exertion of a lateral force on the slab by the means preferably takes place in front of the rolling train.

The means for exerting a lateral force on the slab are preferably operated so that the tip of the slab runs centrally into the place of compression and / or into the rolling train.

At least two means for exerting a lateral force on the slab may be disposed behind the furnace, the first location between the furnace and the first processing device and the second location between the at least two processing devices or within the second processing device. In this case, it has proven useful if the slab is subjected to a shearing process in the first processing device. In the second processing apparatus, the slab is preferably subjected to a descaling process.

A further development provides that the position and / or the shape of the slab are determined transversely to the conveying direction of the slab along its movement in the conveying direction before the first location.

The exertion of a lateral force on the slab from the means can be carried out in a controlled or regulated manner such that the axis of the slab in the conveying direction behind the second location assumes a desired position.

The adjustment of the means for exerting a lateral force on the slab may be determined using a mathematical model depending on the geometry of the device and / or the shape of the slab and / or the eccentricity of the slab and / or the width of the slab.

The device for processing a slab, which has at least one furnace, at least one downstream of the furnace in the conveying direction of the slab processing device and one of the at least one processing device in the conveying direction of the slab downstream rolling train, in particular a finishing train, as well as means with which on the sides of the Slab can be exerted a force to move the axis of the slab in accordance with a predetermined position transverse to the conveying direction of the slab, in particular in accordance with the axis of the rolling mill, according to the invention provides that first means for exerting a lateral force on the Slabs are arranged at a first location and that second means for exerting a lateral force on the slab at a second location, the second location in the conveying direction of the slab being spaced from the first location, wherein the first location is behind the oven and wherein the second place before, pauses is located halfway or behind the at least one processing device.

It is preferably provided that the first location is behind the oven and before the at least one processing device and that the second location is within or behind the first of the at least one processing device.

The area within the furnace is preferably free of means for exerting a lateral force on the slab.

Immediately before the rolling train, a stuffer can be arranged for upsetting the slab in the direction transverse to the conveying direction.

Side guide rulers for centering and guiding the slab may be arranged between the upshot and the first rolling stand of the rolling train. Furthermore, adjusting elements of the side guide rulers can be arranged below and / or above the side guide rulers.

The means for exerting a lateral force on the slab may be spaced from the upset. They can also be arranged in front of the rolling train.

A refinement provides that at least two means for exerting a lateral force are arranged on the slab behind the furnace, the first location being between the furnace and the first processing device and the second location lying between the at least two processing devices or within the second processing device. The first processing device is preferably a pair of scissors. The second processing device is preferably a descaling device.

The means for exerting a lateral force on the slab may comprise at least one roller which is arranged on a pivot arm, wherein the swivel arm is mounted fixed at a bearing point and can be pivoted by an actuator which acts outside of the bearing point on the swivel arm.

The means for exerting a lateral force on the slab can also comprise at least one roller, which is arranged on a linear actuator whose direction of movement is oriented transversely to the conveying direction of the slab.

In both cases, a training provides that the actuator or the linear actuator is designed as a hydraulic piston-cylinder system.

The first means for exerting a lateral force on the slab can also be designed as guide rulers.

The proposed device is preferably part of a thin slab casting rolling mill. It may also be part of a hot strip mill having a roughing and finishing line; In this case, the device is preferably arranged in front of the finishing train.

Thus, the invention is based on the fact that a centering and guiding the slab just before the finishing train with roller side guides done so that a total of short distance between the furnace and finishing mill. The roller side guides are housed between the individual units (processing devices) at a suitable distance. In addition, an upshot and a mechanical or hydraulic side guide are preferably arranged in front of the first rolling stand of the finishing train.

The proposed solution is preferably used in the so-called CSP technology. This is understood to mean the manufacture of a steel strip in a thin-slab caster rolling mill, which enables efficient production of hot strip.

Among other things, the proposed measures can increase the output and reduce the number of Kokillenverstellungen. A direct width control in front of the finishing train is made possible. Furthermore, the tape is improved.

Fig. 1

schematisch die Seitenansicht einer Vorrichtung zum Bearbeiten und Führen einer Bramme zwischen einem nur teilweise dargestellten Ofen und dem ersten Walzgerüst einer Fertigwalzstraße,

Fig. 2

schematisch die zu Fig. 1 zugehörige Draufsicht,

Fig. 3

schematisch eine Darstellung der zum Einsatz kommenden Brammenführungselemente analog zur Darstellung gemäß Fig. 2 in der Draufsicht auf die Vorrichtung,

Fig. 4

eine zu Fig. 3 ähnliche Darstellung, wobei hier ein größerer Abschnitt des Ofens dargestellt ist,

Fig. 5

nochmals schematisch eine Darstellung der zum Einsatz kommenden Brammenführungselemente analog zur Darstellung gemäß Fig. 2 und 3 in der Draufsicht auf die Vorrichtung bei stärker gekrümmter Bramme,

Fig. 6

die Vorderansicht - gesehen in Förderrichtung der Bramme - und

Fig. 7

die Draufsicht auf den in Fig. 6 dargestellten Bereich der Vorrichtung unmittelbar vor dem ersten Walzgerüst der Fertigstraße.

In the drawings, embodiments of the invention are shown. Show it:

Fig. 1

1 is a schematic side view of an apparatus for processing and guiding a slab between an only partially shown furnace and the first rolling stand of a finishing train;

Fig. 2

schematic to the Fig. 1 associated plan view,

Fig. 3

schematically a representation of the used slab guide elements analogous to the representation according to Fig. 2 in the plan view of the device,

Fig. 4

one too Fig. 3 similar representation, wherein here a larger portion of the furnace is shown,

Fig. 5

again schematically a representation of the used slab guide elements analogous to the representation according to Fig. 2 and 3 in the plan view of the device with a more curved slab,

Fig. 6

the front view - seen in the conveying direction of the slab - and

Fig. 7

the top view of the in Fig. 6 shown area of the device immediately before the first rolling stand of the finishing train.

In the FIGS. 1 and 2 is a device to see with a slab 1 can be processed in their promotion in the conveying direction F. Specifically, an end portion of a furnace 2 is shown and the first rolling stand of a rolling line 5, between which the slab 1 is conveyed. Between the furnace 2 and the rolling train 5, a first processing device 3 in the form of a pair of scissors and a second processing device 4 in the form of a descaling device are arranged. Provided are further two means 6 and 7 for exerting a lateral force on the slab 1, ie roller side guides, which are equipped with contact elements in the form of rollers 14 which are against the sides of the 8th and 9 of the slab 1 can be pressed to center the slab so that the axis 10 of the slab 1 coincides with the axis 11 of the rolling train 5.

It is essential that the first means 6 for exerting a lateral force on the slab 1 at a first location 12 act on the slab 1 and that the second means 7 for exerting a lateral force on the slab 1 at a second location 13 on the slab 1 act. In this case, the second location 13 in the conveying direction F of the slab 1 is spaced from the first location 12; Furthermore, the first location 12 is behind the furnace 2 and before the first processing device 3, wherein the second location 13 is located inside or behind the first processing device 3 - in the embodiment between the two processing devices 3 and 4.

The two means 6 and 7 thus provide for a centering of the slab, so that it enters centrally into a stuffer 15, which is arranged immediately in front of the first rolling stand of the finishing train 5. Between edger 15 and the first rolling stand of the finishing train 5 side guide rulers 16 and 17 are further arranged, which further center the slab 1.

As in Fig. 2 can be seen, the means 6, 7 may have a pivot arm 18 which is mounted in a fixed bearing point 19 and carries at its end remote from the bearing point 19 end of the roller 14. An actuator 20 engages the pivot arm 18 and provides for the corresponding adjustment of the roller 14 against the side 8, 9 of the slab. Alternatively, the means 6, 7 may also comprise a linear actuator 21 which delivers the roller 14 directly linearly against the belt edge.

• Beim Transport der Bramme 1 aus dem Ofen 2 in Richtung Fertigstraße 5 steht zunächst die erste Rollenseitenführung 6, also das erste Mittel zur Ausübung einer seitlichen Kraft auf die Bramme, auf Überbreite. Nachdem die Brammenspitze die Rollen 14 passiert hat (erfasst durch Heißmetalldetektoren oder durch eine Wegverfolgung), werden die Rollen 14 langsam gegen die Seiten 8, 9 der Bramme, also gegen die Brammenkanten, gefahren und der Spalt zwischen Bramme und Rollen geschlossen. Die Anpresskräfte werden dabei von Hydraulikzylindern aufgebracht, gemessen und letztlich auf eine vorgegebene minimale Kraft eingestellt. Hierdurch erfolgten die Zentrierung der Bramme 1 und die Mitnahme der Rollen 14. Dieser Zentriervorgang wird langsam und bei kontinuierlich vorwärts transportierter Bramme durchgeführt. Bei bewegter Bramme ist eine leichte Querverschiebung der Bramme 1 bei niedrigen Verschiebekräften ausführbar. Der Zentriervorgang sollte vor Erreichen des zweiten Rollenseitenführungspaars 7, d. h. der zweiten Mittel zur Ausübung einer seitlichen Kraft auf die Bramme, abgeschlossen sein. Passiert die Brammenspitze die zweite Rollenseitenführung, so findet dort der gleiche Zentriervorgang statt. Stehen beide Rollen 14 zentrisch, so ist mit hoher Wahrscheinlichkeit ein mittiges Einlaufen der Bramme in den Staucher 15 und in die Fertigstraße 5 gegeben.

The procedure is explained as follows:

• When transporting the slab 1 out of the furnace 2 in the direction of the finishing train 5, the first roller side guide 6, that is to say the first means for exercising, is initially present a lateral force on the slab, on excess width. After the slab tip has passed the rollers 14 (detected by hot metal detectors or by tracking), the rollers 14 are slowly driven against the sides 8, 9 of the slab, ie against the slab edges, and the gap between the slab and rollers closed. The contact forces are applied by hydraulic cylinders, measured and finally adjusted to a predetermined minimum force. This resulted in the centering of the slab 1 and the entrainment of the rollers 14. This centering is carried out slowly and continuously transported forward slab. When the slab is moving, a slight transverse displacement of the slab 1 is possible at low displacement forces. The centering should be completed before reaching the second Rollenseitenführungspaars 7, ie the second means for exerting a lateral force on the slab. If the slab tip passes the second roller side guide, then the same centering procedure takes place there. If both rollers 14 are centered, it is highly probable that the slab enters the stuffer 15 and the finishing train 5 centrally.

The threading into the stuffer 15 is by driving rollers 22 (s. Fig. 1 ), which are integrated into the descaling device 4, at least until the stuffer 15 or the first stand of the finishing train 5 have taken supported.

The second roller side guide pair 7, ie the second means for exerting a lateral force on the slab, can be arranged before the descaling device as shown, integrated within the Entzundingsvorrichtung or disposed behind the descaling device. Optionally, a drive of the rollers 14 of the means 6 and 7 are provided. The second roller side guide 7 can be set in a straight guide in the width direction (see embodiment at the second location 13 in FIG Fig. 2 ) or via a swivel arm (as at the first location 12 in FIG Fig. 2 ).

Instead of a larger roller side guide roller is in an alternative embodiment (not shown), the arrangement of two smaller close together arranged double roles in a leadership unit possible, but always so that is still given the short design. With the two roller side guides 6 and 7, which are spaced apart, the effect of a long continuous side guide is achieved. The roller side guides 6, 7 thereby form a control unit.

In the case of large slab eccentricity or high displacement forces (thicker thin slabs, long slabs, weak actuators, limited displacement forces), it is optionally possible to deviate from the above-described procedure of centrally adjusting both side roller guides 6, 7. This is on Fig. 3 which shows the situation in a simplified way. In this case, the roller side guides 6, 7 are positioned so that the slab tip safely centered in the stuffer 15. The centering effect is thus possibly only partially performed. The centric shrinkage of the slab head into the stuffer 15 then has higher priority. With knowledge of the distances a ₁ and a ₂ (s. Fig. 3 ) between the roller side guides 6, 7 and the upshot 15, the roller forces and the calculated (small) compression decreases on the rollers, the position of the actuators 20, 21 are set, so that the stated object is achieved. The two positions of the roller side guides 6, 7 are matched to one another. Between the rollers 14 of the means 6, 7 and the rollers of the stuffer 15 results in a straight connecting line.

If it is to be expected that the slab 1 can assume any curved shape (saber, S-shaped, hook shape) and is still off-center, then the optimal positioning of the roller side guides 6, 7 is somewhat more complicated. It is then made a detection of the slab shape and the position over the slab length. For this purpose, laser distance measurements or other position detection signals are provided, for example, in front of the last oven part (behind the ferry), as shown in FIG Fig. 4 is illustrated for the detection and determination of the slab shape and position over the length. Also entered here is the eccentricity Δy of the slab from the axis of the system.

With the detection of the transport speed of the slab 1 and the assignment of the measured edge distance signals by sensors 23 for detecting the band edge on the two sides of the slab, the width, position or generally the shape of the slab (see points xb _i , yb _i ) is transferred determine the length. The form and eccentricity Δy _i determined here are later used for optimum positioning of the roller side guides 6, 7 and / or the rollers of the stuffer 15. Optionally, slab width and slab position detection behind the oven is also possible from the sides by means of the sensors 24 or from above or below.

Details for adjusting the roller side guides 6, 7 and the rollers of the stuffer 15 are made Fig. 5 It can be seen where the setting of the rump side guides and the rollers of the edger is concerned, so that even with a curved slab shape a centric running in of the slab head into the edger or into the finishing train is ensured.

With knowledge of the slab shape (points xb _i , yb _i and the width B of the slab 1), the positions of the rollers 14 and the rollers of the upshot 15 (X1, Y1, X2, Y2, X3, Y3 relative to the slab center) can be approached become. The positions are adapted when passing through the slab tip from the furnace 2 to the first stand of the finishing train 5 to the respective slab shape and partially moved so that the goal is achieved to guide the slab tip in the center of the edger 15. It is also envisaged that the rollers of the stuffer 15 can be asymmetrical, ie off-center, to support the roller side guides 6, 7.

It can also be achieved optionally or additionally according to the same explained principle, the goal of the central inlet of the slab tip in the following framework.

After the slab 1 has been threaded into the rolling train 5, the goal is to center or center the roller side guides 6, 7 and the upshot 15 over the length of the slab, so that the slab 1 and in particular the slab end is as straight as possible is and thus enters the mill 5.

At the end of the slab, the rollers of the upset 15 are fed in symmetrically (short stroke control) in order to avoid or reduce the excess width at the end of the slab. The same goes for the slab head.

As an alternative or in addition to the optical width measurement, the width or position detection can take place via the displacement transmitters of the roller side guides and / or compression rollers. Furthermore, the detected width signal as well as the calculated spread or width change in the finishing train in the width model are used to determine the amount of compression and thus to control the stuffer.

To increase the width reduction on the upshot 15, Niedefialte- or clamping rollers are provided, which are located exactly between the two compression rollers and press from the top and bottom in the middle of the slab 1 on the slab surface to prevent bulging.

Furthermore, it can be provided to simplify the upsetting of the slab in that the compression rollers are lubricated. This increases the material crossflow, reduces the compression and buckling forces and also has a positive effect on the slab and compression roll roughness and thus on the life of the edging rolls.

In order to improve the conditions at the slab end also and to guide the slab as long as possible, a special mechanical side guide between the stuffer 15 and the first stand of the rolling train 5 is additionally provided (s. Fig. 1 and 2 ). Details on this go from the FIGS. 6 and 7 out. The aim is to arrange the stuffer 15 close to the first stand of the rolling train 5 and to position the mechanical side guide as close as possible to the first nip of the first stand. Thus an adjustment of the mechanical side guides, d. h of the side guide rulers 16 and 17, can be performed without additional space and without weakening the stand posts of the rolling stand (with recesses therein), an adjustment below (or optionally also above) the side guide ruler 16, 17 is provided as advantageous 6 and 7 results. It is also possible that, alternatively, the adjustment of the side guide rulers 16, 17 is carried out together with the upsetting 15 employment. In this case, upseters and guide rulers would be firmly connected.

The adjustment of the side guide rulers 16, 17 on a guide 27 is performed by two adjusting elements 26 (cylinders) per side. The adjusting elements 26 are provided at the top with a heat protection element 25 (cooled transfer table, insulation board). The position of the mechanical lateral guide during operation corresponds to the width position of the upshot 15 plus a defined amount (in millimeters).

The described method and the apparatus shown are not limited to a CSP plant, but are also used in similar production plants behind a furnace part. The proposal according to the invention can also be used for example in conventional hot strip mills. Here the Vorbandform is detected behind a roughing stand during transport direction finishing mill and there met with suitable employment of roles before the finishing road the above objectives.

In a conventional hot strip mill, the first centering effect in front of the shears can alternatively be carried out by guide rulers as an alternative to the use of the roller side guide unit 6.

LIST OF REFERENCE NUMBERS

1

Slab

2

oven

3

first processing device (scissors)

4

second processing device (descaling device)

5

rolling train

6

first means for exerting a lateral force on the slab (roller side guide)

7

second means for exerting a lateral force on the slab (roller side guide)

8th

Side of the slab

9

Side of the slab

10

Axis of the slab

11

Axis of the rolling train

12

first place

13

second place

14

Contact element (roller)

15

edger

16

Page guide rule

17

Page guide rule

18

swivel arm

19

bearing point

20

actuator

21

linear actuator

22

capstan roller

23

Sensor for detecting the slab edge

24

Sensor for detecting the slab edge

25

Heat protection element

26

Adjustment element of the side guide ruler

27

guide

F

conveying direction

Dy

eccentricity

B

Width of the slab

x _B

Length coordinate of the slab

y _B

Coordinate describing the slab form

Claims (16)

1. Method of processing a slab (1), particularly for final rolling of the slab (1) to form a strip, in a device, which comprises at least one furnace (2), at least one processing device (3, 4) arranged downstream of the furnace (2) in conveying direction (F) of the slab (1) and a rolling train (5) arranged downstream of the at least one processing device (3, 4) in conveying direction (F) of the slab (1), wherein means (6, 7) are present by which force can be exerted on the sides (8, 9) of the slab (1) in order to move the axis (10) of the slab (1) in correspondence with a predetermined position transversely to the conveying direction (F) of the slab (1), particularly in correspondence with the axis (11) of the rolling train (5), characterised in that first means (6) for exerting a lateral force on the slab (1) act on the slab (1) at a first location (12) and that second means (7) for exerting a lateral force on the slab (1) act on the slab (1) at a second location (13), wherein the second location (13) is spaced from the first location (12) in conveying direction (F) of the slab (1), wherein the first location (12) lies behind the furnace (2) and wherein the second location (13) lies in front of, within or behind the at least one processing device (3, 4), wherein preferably the first location (12) lies behind the furnace (2) and in front of the first of the at least one processing device (3, 4) and the second location (13) lies within or behind the first of the at least one processing device (3, 4).
2. Method according to claim 1, characterised in that the position of the head of the slab (1) is detected in the region of at least one means (6, 7) and the exertion of a lateral force on the slab (1) is commenced by adjustment of a contact element (14) of the means (6, 7) only when the head of the slab (1) has passed the means (6, 7).
3. Method according to claim 1 or 2, characterised in that directly in front of the rolling train (5) the slab (1) is subjected to upsetting in a direction transverse to the conveying direction (F), wherein preferably the exertion of a lateral force on the slab (1) is carried out by the means (6, 7) in front of the location of the upsetting and at a spacing therefrom.
4. Method according to any one of claims 1 to 3, characterised in that the exertion of a lateral force on the slab (1) is carried out by the means (6, 7) in front of the rolling train (5).
5. Method according to one of claims 3 and 4, characterised in that the means (6, 7) for exertion of a lateral force on the slab (1) are so operated that the tip of the slab (1) runs centrally into the location of the upsetting and/or into the rolling train (5).
6. Method according to any one of claims 1 to 5, characterised in that at least two means (6, 7) for exertion of a lateral force on the slab (1) are arranged behind the furnace (2), wherein the first location (12) lies between the furnace (2) and first processing device (3) and the second location (13) lies between the at least two processing devices (3, 4) or within the second processing device (4), wherein preferably the slab (1) is subjected to a cutting process in the first processing device (3) and/or the slab (1) is subjected to a descaling process in the second processing device (4).
7. Method according to any one of claims 1 to 6, characterised in that the position and/or the shape (x_B, y_B, Δy) of the slab (1) transversely to the conveying direction (F) of the slab (1) is or are detected along the movement thereof in the conveying direction (F) in front of the first location (12), wherein preferably the setting of the means (6, 7) for exertion of a lateral force on the slab (1) is determined in dependence on the geometry (a₁, a₂, a₃) of the device and/or the detected shape (x_B, y_B) of the slab (1) and/or the eccentricity (Δy) of the slab (1) and/or the width (B) of the slab (1) with use of a computation model.
8. Method according to any one of claims 1 to 7, characterised in that the exertion of a lateral force on the slab (1) by the means (6, 7) is so carried out in controlled or regulated manner that the axis (10) of the slab (1) in the conveying direction (F) behind the second location (13) adopts a desired position, wherein preferably the setting of the means (6, 7) for exertion of a lateral force on the slab (1) is determined in dependence on the geometry (a₁, a₂, a₃) of the device and/or the detected shape (x_B, y_B) of the slab (1) and/or of the eccentricity (Δy) of the slab (1) and/or the width (B) of the slab (1) with use of a computation model.
9. Device for processing a slab (1), which comprises at least one furnace (2), at least one processing device (3, 4) arranged downstream of the furnace (2) in conveying direction (F) of the slab (1) and a rolling train (5), particularly a finishing rolling train, arranged downstream of the at least one processing device (3, 4) in the conveying direction (F) of the slab (1), as well as means (6, 7) by which a force can be exerted on the sides (8, 9) of the slab in order to move the axis (10) of the slab (1) in correspondence with a predetermined position transversely to the conveying direction (F) of the slab (1), particularly in correspondence with the axis (11) of the rolling train (5), particularly for performance of the method according to any one of claims 1 to 8, characterised in that first means (6) for exertion of a lateral force on the slab (1) are arranged at a first location (12) and that second means (7) for exertion of a lateral force on the slab (1) are arranged at a second location (13), wherein the second location (15) lies at a spacing from the first location (12) in the conveying direction (F) of the slab (1), wherein the first location (12) lies behind the furnace (2) and wherein the second location (13) lies in front of, within or behind the at least one processing device (3, 4), wherein preferably the first location (12) lies behind the furnace (2) and in front of the at least one processing device (3, 4) and the second location (13) lies within or behind the first of the at least one processing device (3, 4) and particularly preferably the region within the furnace (2) is free of means (6, 7) for exertion of a lateral force on the slab (1).
10. Device according to claim 9, characterised in that upsetting means (15) for upsetting the slab (1) in a direction transverse to the conveying direction (F) is arranged directly in front of the rolling train (5), wherein lateral guide strips (16, 17) for centring and guiding the slab (1) are preferably arranged between the upsetting means (15) and the first roll stand of the rolling train (5), particularly preferably adjusting elements (26) of the lateral guide strips (16, 17) are arranged below and/or above the lateral guide strips (16, 17), and/or the means (6, 7) for exertion of a lateral force on the slab (1) are arranged at a spacing from the upsetting means (15).
11. Device according to one of claims 9 and 10, characterised in that the means (6, 7) for exertion of a lateral force on the slab (1) are arranged in front of the rolling train (5).
12. Device according to any one of claims 9 to 11, characterised in that at least two means (6, 7) for exertion of a lateral force on the slab (1) are arranged behind the furnace (2), wherein the first location (12) lies between the furnace (2) and the first processing device (3), preferably a shears, and the second location (13) lies between the at least two processing devices (3, 4) or within the second processing device (4), preferably a descaling device.
13. Device according to any one of claims 9 to 12, characterised in that the means (6, 7) for exertion of a lateral force on the slab (1) comprise at least one roller (14), which is arranged at a pivot arm (18), wherein the pivot arm (18) is mounted at a bearing point (19) at a fixed location and can be pivoted by an actuator (20) engaging the pivot arm (18) outside the bearing point (19), or that the means (6, 7) for exertion of a lateral force on the slab (1) comprise at least one roller (14), which is arranged at a linear actuator (21), the direction of movement of which is oriented transversely to the conveying direction (F) of the slab (1), wherein preferably the actuator (20) or the linear actuator (21) is constructed as a hydraulic piston/cylinder system.
14. Device according to any one of claims 9 to 13, characterised in that the first means (6) for exertion of a lateral force on the slab (1) are constructed as guide strips.
15. Device according to any one of claims 9 to 14, characterised in that it is a component of a thin-slab casting/rolling plant.
16. Device according to any one of claims 9 to 15, characterised in that it is a component of a hot-strip rolling train, which comprises a roughing train and a finishing train, particularly that it is preferably arranged in front of the finishing train.

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