DE102009012334A1 - Method for applying coolant to a cast metal strand in a continuous casting plant and continuous casting plant - Google Patents

Abstract

The invention relates to a method for targeted cooling of a cast metal strand in a strand guide of a continuous casting and a continuous casting, which allows targeted cooling in the continuous casting with time-dependent variable casting width. This is achieved by the respective instantaneous positions of the narrow side walls are detected continuously or discontinuously at a time-varying strand width and / or strand position in the continuous casting and taking into account the casting speed, the coolant application to the metal strand in successive horizons of the strand guide according to the changing strand width and / or strand position occurs.

Description

Technical area

The The invention relates to a method for targeted cooling of a Cast metal strand in a strand guide a Continuous casting plant and a continuous casting plant targeted cooling in the continuous casting plant time-dependent variable casting width possible.

The The invention relates in detail to a method for applying coolant onto a cast metal strand in a continuous casting plant, wherein the metal strand in a cooled continuous casting mold with a strand width defined by narrow side walls is formed and then the partially solidified metal strand passed through a strand guide and in this being cooled continuously in several horizons, being the coolant application in the strand guide depending on the strand width.

Furthermore, The invention relates to a continuous casting plant for continuous Producing a metal strand with at least one continuous casting mold for forming a semi-solidified metal strand with a fixed one Strand width and strand thickness, wherein the continuous casting mold Wide side walls and relative to these positionable Includes narrow side walls, and with one of the continuous casting mold downstream strand guide for supporting and guiding of the metal strand, in the cooling means for applying a Coolant on the metal strand in several horizons are arranged and which adjustment for positioning of spray nozzles depending on the strand width assigned.

State of the art

In the US 2007/0251663 A1 , of the US 3,478,808 A and the US 4,006,633 A The basic principles for strand cooling in the strand guide of a continuous casting plant are described in detail, these being based essentially on a temperature measurement on the cast strand and the amount of coolant supplied to the strand being regulated as a function of the strand temperature.

The general design of a continuous casting machine, which can be assigned to the prior art, is known from 1 illustrated. The continuous casting plant shown in a longitudinal section comprises a cooled continuous casting mold 1 , with two broadside walls 1a and two narrow side walls 1b , wherein in the continuous casting mold 1 a metal strand 2 is formed, which is subsequently formed by a strand guide formed by a roller stand 3 promoted and continuously cooled in it. Between the strand guide rollers following each other in the strand transport direction 4 are spray nozzles 5 arranged for coolant application in a plurality of horizons H1 to H4, wherein in each horizon a plurality of spray nozzles can be arranged transversely to the strand transport direction side by side, with which coolant is distributed predetermined over the normal to the image plane lying strand width of the metal strand. In modern systems, the strand guide is strand guide segments 6 formed, which summarize several successive strand guide rollers in a support frame. Within the segment in the strand conveying direction successive spray nozzles are useful by a common spray bar 7 connected and jointly adjustable. The common adjusting device 8th the horizon is assigned to H5, H6.

Under Horizon is in this document a normal to the strand conveying direction arranged plane or an area in the strand guide understood, in the spray nozzles alone or groups can be positioned together by spray nozzles. Among groups of spray nozzles are in the strand conveying direction sequential spray nozzles to understand the construction connected and adjustable together. These become a horizon although they are spread over a length section range of Strand guide extend in the strand conveying direction.

From the WO 2007/121804 is a applicable for strand guide segments Spritzdüseverstelleinrichtung known, with the positioning of the spray nozzles arranged in a horizon can be made to a set in the continuous casting strand width. Such Spritzdüseverstelleinrichtungen are always based on an axis of symmetry in the strand guide, which also includes the continuous casting mold. A casting width change in the mold takes place by symmetrically adjusting the narrow side walls of the continuous casting mold relative to this axis of symmetry, so that in the strand guide also only a symmetrical relative to the symmetry axis displacement of the spray nozzles is necessary to ensure a uniform coolant application over the strand width.

From the Austrian patent AT 500 814 B1 is an adjustable to different casting widths / strand widths continuous casting mold with wide side walls and between these adjustable arranged narrow side walls known. If strand width changes take place only at large time intervals, localized signs of wear on the broad side walls, which have a negative effect on the surface quality of the cast strand after a strand width increase, occur. To minimize this localized wear, the casting center axis becomes continuous or discontinuous during casting even shifted by the narrow side walls are moved in parallel in the same direction. This has an effect on the time-dependent position of the metal strand in the strand guide and its cooling. In particular, the overmolding of the strand edges of the metal strand leads to unequal cooling conditions and to an increased susceptibility to edge cracks, due to excessive strand edge cooling.

From the WO 2005/120746 For example, a continuous casting plant for selectively casting a wide metal strand or two narrower metal strands on the other hand known. When casting two independent strands, the transport also takes place here through the common strand guide under symmetrical conditions to the symmetry axis of the strand guide. Thus, the designed for the casting of a wide metal strand cooling device can be easily used for two equal width, but narrower metal strands. Difficulties in maintaining even cooling conditions in the secondary cooling zone also arise with differently wide strands or with an asymmetrical distribution of the two strands in relation to the axis of symmetry.

Presentation of the invention

task The present invention therefore has the disadvantages of the known To avoid prior art and a method for coolant application on a cast metal strand in the secondary cooling zone a continuous casting plant and a continuous casting plant with a cooling device in the secondary cooling zone to suggest a strand guide, in the case of a change in position the formed metal strand in the continuous casting mold a corresponding adjustment of the coolant application in the strand guide takes place to over-spray the metal strand edges or an undesirable unequal Avoid coolant application and a largely evenly running strand cooling to make sure.

These Task is in a method of the type described above solved in that with a time-varying Strand width and / or strand position in the continuous casting mold the respective instantaneous positions of the narrow side walls be recorded continuously or discontinuously and taking into account the casting speed the coolant application on the metal strand in successive horizons of the strand guide according to the changing strand width and / or strand position he follows. The consideration of the casting speed, the operating time variable over the casting time allows the determination of time periods, the a certain strand element until the respective horizons are reached needed in the strand guide. This is the time in which the coolant application to the metal strand in the respective horizon to the changing strand width and / or strand position must occur.

Accordingly it is advantageous if the transport time of the metal strand of an initial horizon in the continuous casting mold to the respective horizon of coolant application in the strand guide, which is preferably calculated from the casting speed is, for the positioning of the spray nozzles one Cooling device in the respective horizons of the strand guide is used.

In order to an adaptation of the coolant application in a horizon the strand guide in a simple manner feasible it is expedient if the coolant application in a horizon of strand guidance by at least two Spray nozzles done. This can each external spray nozzles on the current Position of the lateral strand edges are aligned and overmolding or avoid too intensive cooling of the strand edges become.

The Coolant application to the metal strand takes place in the same Way in the bow outside and in the bow inside the strand guide, wherein in the description always only reference is made to one of these two pages.

To a specific embodiment of the coolant application on the metal strand is the individual spray nozzles allocated coolant quantity depending on Spray nozzle distance from the metal surface to be cooled or depending on the coated on the metal strand surface Spray width determined. A change in the distance of one Spray nozzles from the metal strand surface leads to an altered specific coolant application on the metal strand and thus to changed cooling conditions opposite another spray nozzle with other Distance to the metal strand surface.

Another possibility for influencing the cooling conditions on the metal strand results when the cooling which has already taken place during the transport time from the starting horizon in the mold to the respective horizon of the coolant application in the strand guide is taken into account in the determination of the quantity of coolant still to be applied. Particularly in the case of larger changes in the casting speed, in particular a reduction in the casting speed during the ongoing casting process, it is possible to intervene in regulating the course of the cooling during the residence time of the metal strand in the strand guide. such Casting speed changes are regularly z. B. at a pan change necessary.

expedient the detection of the time-dependent changing takes place Strand width and / or strand position in the continuous casting mold and the coolant application to the metal strand in succession following horizons of strand leadership according to the changing strand width and / or strand position following steps: The time-varying Strand width and / or strand position in an initial horizon of Continuous casting mold is by position detection or Positioning detected, this data by one of the narrow side wall of the mold associated position sensor measured or from an associated control device or a Arithmetic unit can be specified. These identified or provided Data is stored in a control device or a computing unit processed and control signals for the time-dependent Positioning the spray nozzles in the respective horizons the strand guide generated and the adjustment of transport time dependent fed.

Preferably the coolant is applied to the metal strand in a horizon of strand guidance by at least two independently positionable spray nozzles, wherein the adjustment of the spray nozzles or a spray nozzles carrying spray bar through the generatrix of the spray cone of Coolant (with cone jet nozzles) or through the spray angle in the width direction of the coolant (at Flat jet nozzles) is determined.

Furthermore, is the object of the invention underlying task in a continuous casting of the type described above achieved in that the narrow side walls Position detecting or position determining devices for Determining the current strand width and / or the current strand position are assigned in the mold, a control device or a Arithmetic unit for receiving and processing the time-dependent Instantaneous values of the line width and / or line position and for generation of positioning signals for the positioning of the spray nozzles the cooling devices in the individual horizons of the strand guide is provided and in the individual horizons of strand guidance independently controllable adjusting devices for spray nozzles or spray nozzle groups are provided.

expedient is the position detection or position determination device for direct or indirect determination of the position of the narrow side wall in the continuous casting mold of one of the narrow side wall formed directly or indirectly associated position sensor. By the determination of the position of the two narrow side walls is the cast metal strand in its strand width and in its Position in the strand guide or with respect to the axis of symmetry the strand guide clearly defined at any time. Similarly, the position determination can also by appropriate default values derived from the plant control system.

Preferably if the position transmitter is assigned to the narrow-side adjusting device, especially integrated in the hydraulic adjusting cylinder.

In the strand guide is at least one, preferably driven strand guide roller a speed measuring device for detecting the time-dependent casting speed or strand transport speed provided.

Around several neighbors, independently adjustable Easy to position spray nozzles to each other, thus no unwanted free space between adjacent ones Spray cones or unwanted overlaps occur the strand surface, it is advantageous if the independently controllable adjustment The spray nozzles include adjusting cylinders that are a linear Allow adjusting movement of a spray nozzle, at the direction of movement of the respective spray nozzle or a spray nozzle carrying spray bar parallel to the generatrix of the spray cone of the coolant jet (with cone jet nozzles) or by the spray angle in the width direction of the coolant jet (with flat jet nozzles with elliptical Spray pattern) in the assigned horizon.

The Spray nozzles are coolant supply devices with dosing devices for regulated coolant quantity allocation assigned.

A small number of necessary adjustment for the spray nozzles are reached when several in the strand conveying direction successively arranged spray nozzles a common Adjustment is assigned in a horizon.

expedient is the strand guide of several strand guide segments formed, and in each segment is the in the strand conveying direction one behind the other arranged spray nozzles at least one common Assigned adjustment in a horizon. A horizon can However, extend over two or more segments or completely detached from a segment assignment be.

Brief description of the drawings

Further advantages and features of the present The invention will become apparent from the following description of non-limiting embodiments, reference being made to the following figures, which show the following:

1 a longitudinal section through a continuous casting plant with a schematic representation of the essential system components,

2 a plant configuration for the implementation of the method according to the invention in a continuous casting according to 1 .

3 shows the independent coolant supply with a metal strand moved asymmetrically to the plant symmetry axis in the strand guide,

4 shows the independent coolant supply with two metal strands moving asymmetrically to the system axis of symmetry in the strand guide.

Embodiment of the invention

1 shows a plant longitudinal section through a continuous casting plants conventional design for casting metal strands with slab or thin slab cross-section, as in their basic structure for the implementation of the method for selectively cooling a cast metal strand and with appropriate adaptation of the Strangießkokille also for the simultaneous casting of two metal strands suitable is.

The continuous casting plant has a continuous casting mold 1 with broadside walls 1a and between these broad side walls slidably and clampably arranged narrow side walls 1b on. Each of the narrow side walls 1b is with a narrow side adjustment 1c connected. These narrow-side adjustment allow each other in opposite directions of the narrow side walls to set the strand width B product specific or change. But they also allow a synchronous, continuous or iterative displacement of the narrow side walls to the wear on the broad side walls 1a locally low. The adjustment of the narrow side walls takes place with the involvement of position recognition or position determination devices 1d here a position sensor on each narrow-side adjustment 1c include.

The one in the continuous casting mold 1 formed metal strand 2 goes through after its exit from the Strangießkokille the immediately following strand guide 3 (Secondary cooling zone), which consists of a variety of strand guide rollers 4 is formed and supported in the metal strand, and guided with spray nozzles 5 is cooled intensively. The strand guide rollers 4 are either arranged in pairs, as shown in the upper part of the strand guide or are summarized in groups in a support frame and form strand guide segments 6 , as shown schematically in the lower part of the strand guide.

Between in the strand conveying S successive strand guide rollers 4 are in a plane normal to the strand transport direction usually multiple spray nozzles 5 both on the outer bow and on the inner bow of the strand guide 3 arranged, with which coolant on the broad side walls of the metal strand 2 is applied. The individual spray nozzles 5 between adjacent strand guide rollers 4 is an adjusting device 8th associated with which the spray nozzles 5 can be positioned in their position to the strand surface. Especially in the strand guide segments 6 are several in the strand conveying direction S successively arranged spray nozzles 5 via a connecting common spray bar 7 with a common for these spray nozzles adjustment 8th connected. The adjusting devices 8th and the associated spray nozzles 5 Horizons H1 to H6 are assigned. In individually adjustable spray nozzles are these and the associated adjustment 8th Assigned in a common plane lying horizons H1 to H4, the merger of several in the strand transport direction behind each other lying spray nozzles 5 over a common spray bar 7 and a common adjusting device 8th This group of spray nozzles is assigned a horizon H5, H6.

2 shows a device configuration for the implementation of the method according to the invention in a continuous casting and illustrates the interaction of the continuous casting mold 1 and the coolant application with a cooling device 10 in the strand guide, as for example in the horizon H3 of the strand guide according to 1 he follows. In particular, in 2 the cooling conditions with respect to the plant-fixed, dash-dotted symmetry axis 11 the strand guide off-center positioning of the metal strand 2 shown. This situation occurs when reducing local wear on the broadside walls 1a for example, at intervals a parallel displacement of the narrow side walls 1b with the narrow side adjustment 1c takes place.

The one in the continuous casting mold 1 formed metal strand 2 has a casting width B and is characterized by the setting made at a certain time setting the narrow side walls 1b with respect to the axis of symmetry 11 positioned off-center. With trained as a position encoder Positionserken tion or position determining devices 1d that the narrow side adjustment 1c are assigned their time-dependent instantaneous position and the time course and thus the strand width and the strand position continuously or discontinuously time-dependent detected and the determined data of a computing unit 12 fed. Some of the metal strand supporting and leading strand guide rollers 4 are with a motor drive 13 and a speed measuring device 14 for detecting the instantaneous transport speed of the metal strand 2 and equipped their timing, for example, with a speed sensor. These measurement data are fed to the arithmetic unit continuously. In addition, control data can be sent from the system control system of the continuous casting plant via a data line 15 be fed.

In the arithmetic unit 12 is calculated on the basis of a mathematical model, when a change in position in the continuous casting mold in the individual horizons of the strand guide is effective, ie with which time delay or at which time in the continuous casting mold 1 assumed position of the metal strand also in the respective horizon of the strand guide 3 occurs. The calculated time and the given strand position from the continuous casting mold 1 form the manipulated variables for the positioning of the spray nozzles 5 the cooling device 10 in the individual horizons of strand management 3 , The actuating signals control adjusting cylinders 8a . 8b of adjusting devices 8th that the spray nozzles 5 in a direction of movement parallel to the generatrix 16 of the coolant spray cone 17 move with the spray angle α. In a lateral change in position of the metal strand in the horizon position change is dependent on a spray nozzle 5a to the outside and the other spray nozzle 5b moved inward, depending on the instantaneous strand width proportions relative to the axis of symmetry 11 , This allows individual tracking of the coolant application to the metal strand in each horizon of the strand guide.

The detailed mechanical structure of the spray nozzle adjustment is in the WO 2007/121804 A1 has already been described and is applied analogously to the subject matter of the present invention with continuously or discontinuously changing strand width or with asymmetrical width adjustment with respect to an axis of symmetry. Also, a common adjusting device for a plurality of spray nozzles arranged in succession in the strand conveying direction with a common spray bar is in the WO 2007/12804 A1 already described and comes here in the same constructive design application. The adjustment to time-variable asymmetry conditions is realized by the individual control of the arranged on both sides of the axis of symmetry adjustment for the spray nozzles.

3 schematically illustrates the independent coolant supply on both sides of the axis of symmetry 11 arranged spray nozzles 5a . 5b for the special case of a single cast metal strand 2 , which is moved asymmetrically to the axis of symmetry by the strand guide of the continuous casting. Central coolant lines 20a . 20b are utilities with metering devices 21a . 21b associated with a regulated distribution of refrigerant quantity to the individual spray nozzles 5a . 5b via supply lines 22a . 22b to ensure. The utilities with dosing devices 21a . 21b According to a further embodiment, the injection pressure of the coolant can also be regulated as a function of default values of the arithmetic unit. Several spray nozzles can have a common spray bar 23 (shown in dashed lines) with a common supply line 22a . 22b be connected.

4 illustrated in a too 3 analog representation schematically the independent coolant supply on both sides of the axis of symmetry 11 arranged spray nozzles 5a . 5b for the special case of two parallel cast metal strands 2a . 2 B uneven strand width, which are moved asymmetrically to the axis of symmetry by the strand guide of the continuous casting. This case occurs in twin-continuous casting, which are suitable by a special design of the continuous casting mold to cast two metal strands of different widths or alternatively suitable for casting a strand or two contrast narrower strands. The central coolant lines 20a . 20b are analogous to 3 Supply facilities with metering devices 21a . 21b associated with a regulated distribution of refrigerant quantity to the individual spray nozzles 5a . 5b via supply lines 22a . 22b to ensure. The utilities with dosing devices 21a . 21b According to a further embodiment, the injection pressure of the coolant can also be regulated as a function of default values of the arithmetic unit. Several spray nozzles can have a common spray bar 23 (shown in dashed lines) with a common supply line 22a . 22b be connected.

1

continuous casting

1a

Wide side walls

1b

Narrow side walls

1c

Schmalseitenverstelleinrichtung

1d

Positionserkennungs- or position determining device

2, 2a, 2b

metal strand

3

strand guide

4

Strand guide rolls

5, 5a, 5b

spray nozzles

6

Strand guide segment

7

spray bars

8th

adjustment the spray nozzles

8a, 8b

adjusting cylinder

H0

output horizon

H1 ... H6

Horizon in the strand leadership 3

10

cooling device

11

axis of symmetry the strand guide

12

computer unit

13

drive the strand guide roller

14

Speed measurement system

15

data line

16

generating of the coolant spray cone

17

Coolant spray cone

20a, 20b

central Coolant line

21a, 21b

supply with dosing device

22a, 22b

supply line

23

spray bars

B

strand width

S

Strand conveying direction

α

spray angle

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• US 2007/0251663 A1 [0004]
• - US 3478808 A [0004]
• - US 4006633 A [0004]
• WO 2007/121804 [0007]
• - AT 500814 B1 [0008]
• WO 2005/120746 [0009]
• WO 2007/121804 A1 [0039]
• WO 2007/12804 A1 [0039]

Claims (14)

Method for applying coolant to a cast metal strand ( 2 . 2a . 2 B ) in a continuous casting plant, wherein the metal strand in a cooled continuous casting mold ( 1 ) with one of narrow side walls ( 1b ) strand width (B) is formed and the partially solidified metal strand is then formed by a strand guide ( 3 ) and in this continuously in several horizons (H1, ..., H6) is cooled, wherein the coolant application in the strand guide is carried out in dependence on the strand width, characterized in that at a time-varying strand width and / or strand position in the Continuous casting mold ( 1 ) the respective instantaneous positions of the narrow side walls ( 1b ) are detected continuously or discontinuously, and taking into account the casting speed, the coolant application to the metal strand in successive horizons (H1, ..., H6) of the strand guide ( 3 ) takes place according to the changing strand width and / or strand position. A method according to claim 1, characterized in that the transport time of the metal strand from an initial horizon (H0) in the continuous casting mold ( 1 ) to the respective horizon (H1, ..., H6) of the coolant application in the strand guide ( 3 ), which is preferably calculated from the casting speed, for the positioning of the spray nozzles ( 5 . 5a . 5b ) a cooling device ( 10 ) in the respective horizons of strand management ( 3 ) is used. A method according to claim 1 or 2, characterized in that the coolant application in a horizon (H1, ..., H6) of the strand guide ( 3 ) by at least two spray nozzles ( 5a . 5b ) he follows. Method according to one of the preceding claims, characterized in that the individual spray nozzles ( 5a . 5b ) is determined depending on the spray nozzle distance from the metal strand surface or the coated on the metal strand surface spray width. Method according to one of the preceding claims, characterized in that during the transport time from the starting horizon (H0) in the mold ( 1 ) to the respective horizon (H1, ..., H6) of the coolant application in the strand guide ( 3 ) already taken into account in the determination of the amount of coolant still to be applied. Method according to one of the preceding claims, characterized in that the time-varying strand width and / or strand position in an initial horizon (H0) of the continuous casting mold ( 1 ) by position detection or position determining devices ( 1d ), this data being conveyed through one of the narrow side walls ( 1b ) of the mold ( 19 assigned position sensor or by an associated control device or a computing unit ( 12 ), these data are processed in a control device or a computing unit and control signals for the time-dependent positioning of the spray nozzles ( 5 . 5a . 5b ) in the respective horizons (H1, ..., H6) of the strand guide ( 3 ) and adjusting devices ( 8th ) of the spray nozzles are supplied transport time dependent. Method according to one of the preceding claims, characterized in that the coolant application to the metal strand in a horizon (H1, ..., H6) of the strand guide by at least two independently positionable spray nozzles ( 5a . 5b ) or spray nozzles carrying spray bars ( 23 ), wherein the adjustment direction ( 8th ) of the spray nozzles ( 5a . 5b ) by the generator ( 16 ) of the spray cone of the coolant jet or by the spray angle (α) in the width direction of the coolant jet is determined. Continuous casting plant for the continuous production of a metal strand ( 2 . 2a . 2 B ) with at least one continuous casting mold ( 1 ) for forming a semi-solidified metal strand having a predetermined strand width and strand thickness, wherein the continuous casting mold ( 1 ) Wide side walls ( 1a ) and relative to these positionable narrow side walls ( 1b ), and with one of the continuous casting mold ( 1 ) downstream strand guide ( 3 ) for supporting and guiding the metal strand, in the cooling devices ( 10 ) are arranged for applying a coolant to the metal strand in a plurality of horizons (H1, ..., H6) and which adjustment devices ( 8th ) for the positioning of spray nozzles ( 5 . 5a . 5b ) are assigned as a function of the strand width (B), characterized in that the narrow side walls ( 1b ) Position detection or positioning devices ( 1d ) are assigned to determine the current strand width and / or the current strand position in the mold, a control device or a computing unit ( 12 ) for receiving and processing the time-dependent instantaneous values of the strand width and / or strand position and for generating positioning signals for the positioning of the spray nozzles ( 5 . 5a . 5b ) of the cooling devices ( 10 ) in the individual horizons (H1, ..., H6) of the strand guide ( 3 ) is provided and in the individual horizons of the strand guide independently controllable adjusting devices ( 8th ) for spray nozzles ( 5 . 5a . 5b ) or spray nozzle groups are provided. Continuous casting plant according to claim 8, characterized in that the position detection or position determining device ( 1d ) of one of the narrow side wall ( 1b ) of the continuous casting mold ( 1 ) associated with the position sensor is formed. Continuous casting plant according to claim 8 or 9, characterized in that in the strand guide ( 3 ) a speed measuring device ( 14 ) is provided for detecting the time-dependent casting speed. Continuous casting plant according to one of the preceding claims 8 to 10, characterized in that the independently controllable adjusting devices ( 8th ) of the spray nozzles ( 5 . 5a . 5b ) Adjusting cylinder ( 8a ), which allow a linear displacement movement of a spray nozzle, wherein the direction of movement of the respective spray nozzle ( 5 . 5a . 5b ) or a spray nozzle carrying spray bar ( 7 ) parallel to the generatrix of the coolant spray cone ( 17 ) of the coolant jet or by the spray angle (α) in the width direction of the coolant jet in the associated horizon (H1, ..., H6). Continuous casting plant according to one of the preceding claims 8 to 11, characterized in that the spray nozzles ( 5 . 5a . 5b ) Coolant supply devices with dosing devices ( 21a . 21b ) are assigned to the controlled Kühlmittelmengenzuteilung. Continuous casting plant according to one of the preceding claims 8 to 12, characterized in that a plurality of spray nozzles arranged one behind the other in the strand conveying direction ( 5a or 5b ) a common adjusting device ( 8th ) is assigned in a horizon (H1, ..., H6). Continuous casting plant according to one of the preceding claims 8 to 12, characterized in that the strand guide ( 3 ) of several strand guide segments ( 6 ) is formed and in each segment in the strand conveying direction successively arranged spray nozzles ( 5a or 5b ) at least one common adjustment device ( 8th ) is assigned in a horizon (H1, ..., H6).