Device and method for producing metal strip in continuous or batch mode

Abstract

The invention relates to a combined casting and rolling method which can be operated not only in a continuous operating mode but also in a batch operating mode. The problem addressed by the invention is that of providing a compact plant for producing metal strips, which plant can be operated both in a continuous operating mode and in a batch operating mode. Said aim is achieved on the one hand in that the discharge device (5a) and the feed device (5b) are arranged between the first casting system (1) and the rolling mill (8). The feed-out device (5a) can feed out the cut first slab (40) transversely to the casting direction (G). A feed device (5b) having a heating furnace (5c) for feeding the cut slab (41) is arranged next to the discharge device (5a). The distance (L) between the end of the first casting device (1) and the start of the rolling mill (8) is less than 100 m, preferably less than 80 m, particularly preferably less than 60 m.

Description

Technical Field

[0001] This invention relates to the field of combined casting and rolling methods, which can be operated not only in a continuous operation mode but also in a batch operation mode. In one aspect, this invention relates to an apparatus for manufacturing metal strip, the apparatus comprising the following components: - A first continuous casting apparatus, wherein the end of the casting apparatus is defined by a continuous casting billet guide roll arranged as the last continuous casting billet guide roll. -A first dividing device arranged behind the first casting equipment for dividing the first slab; - A rolling mill arranged behind the first dividing device, wherein the beginning of the rolling mill is defined by a rolling stand arranged as the first rolling stand. - A shearing machine located behind the rolling mill. - A take-up device located behind the shearing machine. - An automated mechanism that can manipulate the equipment in such a way that it can be operated in either a continuous operation mode or a batch operation mode.

[0002] On the other hand, the present invention relates to a method for manufacturing metal strips using the aforementioned equipment. Background Technology

[0003] The combined casting and rolling method has now replaced the traditional method of casting thick slabs and hot wide strip mills.

[0004] The most important advantage of combining casting and rolling methods in continuous operation mode is: - Minimal energy consumption - Reduced CO2 emissions or no CO2 emissions at all - Production of ultra-thin strips - Highest uniformity quality in continuous operation mode - Lower investment cost - Lower operating costs.

[0005] Because the mass flow through the entire device is essentially constant in continuous operation mode and does not exhibit the phased acceleration required to traverse longer intervals, many of the advantages of continuous operation are coupled to the short total length of the device.

[0006] However, in order to completely replace existing hot wide strip mill lines and all their products, single-strand casting and rolling equipment is insufficient in many cases due to the quality flow limitations of current casting methods.

[0007] The maximum mass flow rate that continuous casting equipment can currently provide is in the range of 7 to 8 tons per minute. This results in a maximum annual production capacity of approximately 3 million tons. For high-power hot rolling mills, the production capacity is between 4 and 6 million tons per year (Mt / J), which means it can be more than twice that of continuous casting equipment.

[0008] Therefore, steel manufacturers attempt to combine two continuous casting units with one rolling mill to achieve the same output, for example: 2.5 Mt / J produced by casting unit 1 + 2.5 Mt / J produced by casting unit 2 = 5 Mt / J for one rolling mill.

[0009] By definition, this means that it is impossible to produce a sustained continuous operation when producing two billets.

[0010] Because many high-quality requirements (ultra-thin and high-grade) can only be achieved through continuous operation, steel manufacturers desire equipment that meets the following two requirements: - Continuous equipment used to produce ultra-thin, high-quality products; - A high-output equipment used to combine two casting machines with a rolling mill.

[0011] A device should meet the following requirements: -in Thickness 0.6 to 32 mm, preferably 0.8 to 25.4 mm Width 600 to 2600 mm, preferably 900 to 2134 mm Flat panel production within size range - All steel grades having a carbon content of 0.001% to 1%, preferably 0.005% to 0.5%. - High productivity and standard quality are achieved through rapid casting. - The special quality requiring slow solidification is achieved through slow casting. - Productivity: 3 to 8 Mt / J (preferably 4 to 6 Mt / J).

[0012] Due to the need for continuous production, there are recent research and development plans for using continuous operation modes on combined dual-flow slab casting and rolling equipment.

[0013] The key feature of these solutions is the large spacing between the casting line and the rolling line, which is necessary to connect the production of the two continuously cast billets to each other.

[0014] To overcome heat loss during the transport of slabs from the casting machine to the rolling mill, tunnel furnaces with lengths of 150 to 250 m have been proposed.

[0015] While these furnaces are highly effective at preventing temperature loss, they are also very energy-intensive and require extensive maintenance. Furthermore, the furnaces are always running in production lines with rolling mills, even during continuous production.

[0016] However, conceptual schemes based on dual-slab casting and rolling have emerged, which also provide a feasible solution for production using a single continuously cast slab in a continuous operation mode. These schemes all feature long tunnel furnaces and heated transfer cars (Fähre) before the rolling mill, which serve as buffers and mergers in batch operation modes.

[0017] For batch processing operations, two furnaces, each up to 250m long, must be continuously heated, resulting in high energy consumption.

[0018] The equipment, consisting of a tunnel furnace and a transfer car, must also be traversed during continuous operation. For a casting speed of 4 m / min and a furnace length of 160 m, this lasts approximately 40 minutes. This not only leads to high oxidation but also to high energy loss during this time. Every advantage derived from utilizing the hot core of the continuously cast billet exiting the casting machine is thus lost after transporting it through the tunnel furnace. In short, this configuration is disadvantageous for continuous operation because the length between the casting machine and the rolling mill must be significantly increased.

[0019] Many advantages typically associated with continuous operation, such as low energy consumption, zero CO2 emissions, low total output loss, maximum initial equipment simplicity, and thus minimum thickness, cannot be fully realized in this type of equipment construction.

[0020] In addition, tunnel furnaces require very intensive maintenance, and during maintenance periods, neither continuous casting equipment nor rolling mills can be operated.

[0021] Document DE 10 2008 020 412 A1 describes a method for manufacturing metal strip by continuous casting and rolling in a composite equipment. This method should improve the flexibility of the operation, especially ensuring the continuity of the casting process in the event of interference, maintenance, or other rolling interruptions.

[0022] A compact casting-rolling composite device is described in document EP 1 868 748 B1.

[0023] Document WO 2023 / 186471 A1 discloses a casting and rolling equipment with a tunnel furnace, wherein a second casting equipment is arranged in parallel and the two equipment are connected to each other by means of a shuttle car.

[0024] US 10,576,520 B1 describes a casting-rolling composite apparatus having a tunnel furnace and a second casting apparatus arranged in parallel. Summary of the Invention

[0025] The objective of this invention is to provide a compact apparatus for manufacturing metal strips, which is capable of operating not only in a continuous operation mode but also in a batch operation mode.

[0026] This task is accomplished by a device in which an outlet device is arranged between a first dividing device and a rolling mill, capable of exporting the first cut slab transverse to the casting direction. Immediately following this is a supply device with a heating furnace for inputting the cut slab, wherein the supply device is also capable of inputting the cut slab transverse to the casting direction. The supply and outlet devices are configured such that they can transport the slab along the casting direction. The distance between the end of the casting equipment and the beginning of the rolling mill is less than 100 m, preferably less than 80 m, and particularly preferably less than 60 m. Slabs with a thickness of 100 to 200 mm, preferably 120 to 160 mm, are produced by the first casting equipment.

[0027] With the compact arrangement according to the invention, continuous operation is possible in addition to batch processing, without the need for energy-intensive heating. The first slab produced by the first casting equipment can be discharged via an outlet device.

[0028] This equipment configuration allows the equipment to operate in a continuous operation mode without energy-intensive heating. The equipment can also operate in a batch operation mode to achieve the highest possible production capacity load of the rolling mill. The invention also allows the first casting equipment to continue operating and the first cast slab to be discharged while changing rolls in the rolling mill.

[0029] The supply device, equipped with a heating furnace, can heat slabs produced by other casting equipment or transported from the slab warehouse and feed them into the rolling mill. Both the discharge device and the supply device convey the material transversely to the casting direction.

[0030] According to the invention, a second continuous casting apparatus having a second dividing device is arranged parallel to the first casting apparatus. The second casting apparatus is connected to the feeding device via a first connecting device, preferably a roller conveyor, such that a second slab produced by the second continuous casting apparatus can be fed into the feeding device and the heating furnace. This arrangement allows the rolling mill to operate at a higher load rate due to the additional input of the second slab, thereby increasing production output. In the context of the invention, "second casting apparatus" refers to the apparatus that produces the second slab. Therefore, it is also conceivable that the first casting apparatus produces the first slab and simultaneously produces the second slab. Thus, the second slab is the type of slab produced using the second casting apparatus in this invention.

[0031] A preferred embodiment specifies that the discharge device, the supply device, and the heating furnace are connected to each other in such a way that the cut first slab delivered by the discharge device can be fed into the heating furnace and the supply device, for example, by a slab conveying device.

[0032] One advantageous implementation specifies that the automated mechanism can operate the supply and discharge devices in such a way that the first slab, cut at the first dividing device, can be directly transported to the rolling mill at a conveying speed greater than the casting speed. This operation enables the first slab to lose as little heat as possible and reach the rolling mill quickly.

[0033] In a preferred embodiment, the second continuous casting equipment produces a second slab with a maximum thickness of 250 mm. The second slab can, in this case, be thinned to a smaller thickness using a roughing mill stand, so as to have the same thickness range as the first slab.

[0034] Another advantageous implementation specifies that the heating furnace is preferably a walking beam furnace.

[0035] The cut slabs are transported transversely to the casting direction in the heating furnace to the feeding device.

[0036] The heating furnace preferably has at least two motion zones that can operate independently of each other. The first motion zone of the heating furnace is assigned to the feeding device and the second motion zone is assigned to the feeding zone of the heating furnace for the slabs to be cut.

[0037] The furnace can also be operated in such a way that the two motion zones are coupled. However, if a machine stoppage or roll replacement occurs, the first and second motion zones can be decoupled. This means that the motion zone assigned to the feeding device operates at a different speed than the motion zone assigned to the feed area. The motion zone assigned to the feeding device can also be stopped and thus used as a buffer, while the slab can continue to be introduced into the motion zone assigned to the feed area. This ensures that the furnace can be matched accordingly to different slab thicknesses, operational interruptions, or other disturbances caused by operation, so as to maintain a temperature preferably at least 1100°C at the discharge position.

[0038] However, it is also conceivable that the heating furnace may have an additional independent movement zone between the first and second movement zones. This implementation provides additional flexibility for very different operating conditions of the equipment.

[0039] In an embodiment of a walking beam furnace, the walking beam furnace should have the following characteristics: -Heat the second slab to 900-1150℃ during smaller quality flow production. - Keep the second slab at 1100-1200℃ - At least two separate motion zones are located within the walking beam furnace to decouple loading and unloading, and also to enable feasible storage solutions within the furnace. The walking beam furnace has a separate motion zone in the feed area, independent of the motion zones of the rest of the furnace. This allows for a degree of flexibility in loading and unloading the furnace. - The furnace should be able to operate as CO2-neutral as possible, for example, by using hydrogen burners instead of fossil gas burners.

[0040] An additional preferred embodiment specifies that the supply device is connected to a conveying device, wherein the conveying device receives cold slabs preferably from a slab warehouse.

[0041] In a preferred embodiment, the heating furnace has a maximum length of 30m. The goal of this equipment is to ensure the most compact possible arrangement to achieve maximum flexibility for producing different products; therefore, the heating furnace should also have a minimum size to achieve this goal.

[0042] In an additional advantageous embodiment, the conveying device has a heating furnace.

[0043] In a suitable implementation, the minimum length of the supply device and the minimum length of the discharge device are calculated using the following formula: a… factor Y… The weight of the roll material relative to its width [t / m] ρ…density [t / m] 3 ] d… The maximum settable casting gap [m] of the first casting equipment.

[0044] Therefore, for a maximum adjustable casting gap of 150mm thickness, a specific gravity of 21t / m for the coil, and 7.7t / m in the hot state, 3 For the first casting equipment with a density ρ, this results in a slab length of 18.18 m. In order for the slab to be reliably fed into and discharged by the feeding and discharging devices, it must have a relatively large length – this is taken into account by a factor a. The factor a is between 1.1 and 1.5.

[0045] Given a factor of 1.2, the lengths of the output and supply devices are 21.8 m.

[0046] In an advantageous embodiment, the length of the supply device and the length of the discharge device are at most 30m, preferably at most 25m, and particularly preferably at most 20m.

[0047] Furthermore, the task is accomplished by a device located between the first dividing device and the rolling mill. ○ Heating furnace with first induction ○ Immediately following the first induction heating furnace, a slab manipulation device is arranged for inputting and discharging the cut slab, wherein the slab manipulation device is capable of inputting or discharging the cut slab transversely to the casting direction and transporting the cut slab along the casting direction, wherein ○ The slab manipulation device is connected to the first induction heating furnace in such a way that the first slab to be cast can be directly fed into the slab manipulation device, wherein ○ The distance between the end of the casting equipment and the beginning of the rolling mill is less than 100m, preferably less than 80m, and particularly preferably less than 60m.

[0048] This alternative arrangement according to the invention also allows for the shortest possible distance between the casting equipment and the rolling mill. Furthermore, this implementation avoids CO2 emissions and achieves a compact structure.

[0049] According to an embodiment of the invention, a second continuous casting apparatus having a second dividing device is arranged parallel to the first casting apparatus. The second casting apparatus is connected to a second induction heating furnace via a first connecting device for feeding a second slab produced by the second casting apparatus into the second induction heating furnace. A slab conveying device is connected to the second induction heating furnace such that it can feed the second slab into a slab manipulation device.

[0050] One advantageous embodiment specifies that the length of the first induction heating furnace and the length of the slab manipulation device are a maximum of 30m, preferably a maximum of 25m, and particularly preferably a maximum of 20m.

[0051] One suitable implementation specifies that the slab manipulation device is connected to a conveying device, wherein the conveying device supplies cold slabs preferably from a slab warehouse.

[0052] A preferred embodiment specifies that a first slab with a thickness of 100 to 200 mm, preferably 120 to 160 mm, is produced by a first casting apparatus.

[0053] One advantageous embodiment specifies that the second continuous casting equipment produces a second slab having a thickness range substantially corresponding to the thickness range of the first slab, or produces a second slab having a maximum thickness of 250 mm, preferably the second slab being able to reduce in thickness by means of a roughing mill stand.

[0054] Furthermore, the task is solved by a method for manufacturing metal strips using the equipment described in claims 1-14. The equipment is operated in a continuous operation mode or a batch operation mode via automation, depending on the final thickness, desired CO2 footprint, pre-defined low energy consumption, pre-defined casting speed, and / or the mechanical properties of the metal strip to be produced. For example, the equipment operates in a continuous operation mode to achieve a final thickness of less than 1.5 mm. For a quality of 1.5 to 2.5 mm, the equipment operates in a continuous operation mode or a batch operation mode based on desired mechanical properties, such as strength.

[0055] If lower CO2 emissions and / or lower energy consumption are required, the equipment should be operated in continuous operation mode whenever possible.

[0056] If the goal is to produce metal strips that require slow casting quality from the casting equipment, then the equipment should be operated in batch mode. Attached Figure Description

[0057] The features, characteristics, and advantages of the present invention described above, and the ways and methods of achieving these features, characteristics, and advantages, will become clearer and more readily understood in conjunction with the following description of one embodiment, which will be explained in detail with reference to the accompanying drawings. Hereinafter: Figure 1 A schematic diagram of a first casting facility with a subsequent rolling mill, together with a parallel second casting facility, is shown. Figure 2A schematic diagram of a first casting apparatus with a subsequent rolling mill is shown, the first casting apparatus operating in a continuous operation mode; Figure 3 A schematic diagram of a first casting apparatus with a subsequent rolling mill is shown, the first casting apparatus operating in batch operation mode; Figure 4 A schematic diagram is shown of a first casting equipment with a subsequent rolling mill, together with a parallel second casting equipment, the second casting equipment operating in batch operation mode; Figure 5 A schematic diagram is shown of a first casting apparatus with a subsequent rolling mill and a parallel second casting apparatus with an induction heating furnace. Detailed Implementation

[0058] exist Figure 1The diagram shows an apparatus for manufacturing metal strips. This apparatus consists of a first continuous casting unit 1 and a second continuous casting unit 2 arranged parallel to the first casting unit 1. A dividing device 3 is arranged immediately after the first casting unit 1. The first dividing device 3 is positioned after the last continuous casting slab guide roller 31, which is located in the last continuous casting slab guide section 30 and defines the end of the casting unit 1. Following the first dividing device 3 is an output device 5a, which outputs the first slab 40 cut by the dividing device 3 and feeds it into a slab transport device 16. The slab transport device 16 can be guided, for example, by rails mounted on the ground and by cable-, chain-, or wheel drives acting as a slab transfer vehicle, or by rails at a certain height—beyond the top (Überkopf)—acting as a slab manipulator or crane. The first slab 40 is output substantially at a right angle to the casting direction G. A supply device 5b for inputting the cut slab 41 is arranged immediately after the output device 5a along the casting direction G. A heating furnace 5c is provided for the supply device 5b so that the input slab 41 can be heated to the desired temperature. The supply device 5b is configured such that the slab 41 is introduced transversely, substantially at a right angle, relative to the casting direction G. By the transverse output and input to the casting direction G, the output device 5a and the supply device 5b can be arranged in a structure as compact as possible. The output device 5a and the supply device 5b transport the slab along the casting direction G, for example by means of driven rollers, and transversely to the casting direction G, the slab is lifted from below or above, for example by means of a lifting device, and then transported transversely to the casting direction G. A first intensifying heating device 6 and a first descaling device and / or an intensifying cooling device 7 can be arranged after the output device 5b. A rolling mill 8 is then arranged. The beginning of the rolling mill 8 is defined by a first rolling stand 8a. The distance L between the end of the casting equipment 1 and the beginning of the rolling mill 8 should be as small as possible to minimize the potential heat loss of the cast first slab, thus enabling continuous operation. The distance L should be less than 100 m, preferably less than 80 m, and particularly preferably less than 60 m. A third dividing device 9, a second enhanced heating device 10, and a second descaling device and / or enhanced cooling device 11 can be arranged after the rolling mill 8. Subsequently, another rolling mill 12 can be arranged. Following this are a cooling device 13, a shearing machine 14, and a coiling device 15.

[0059] The second slab 42 is produced by the second continuous casting equipment 2, and can be rolled in the roughing mill stand 20 and divided by the second dividing device 4. The second slab 42 is conveyed to the heating furnace 5c and further to the feeding device 5b via a first connecting device 18, which can be configured as a roller conveyor. Thus, the second slab 42 produced by the second casting equipment 2 can be fed into the rolling mill 8. In addition, it is conceivable that cold slabs 43 from the second slab warehouse can be fed in. The cold slabs can be guided to the heating device 23 by means of a conveying device 17 via an automatic flame cleaner 22, and then the conveying device is connected to the heating furnace 5c and the feeding device 5b so that the cold slabs can then be fed into the rolling mill 8. The equipment has an automation mechanism 45, which is connected in particular to the feeding device 5a and the output device 5b, and can operate the feeding device and the output device in such a way that the cut first slab 40 can be accelerated and fed into the rolling mill 8 at a speed higher than the casting speed.

[0060] exist Figure 2 The diagram illustrates one possible operating mode of the device. In this embodiment, the device operates in a continuous operation mode, thus neither inputting nor outputting slabs.

[0061] exist Figure 3 The diagram illustrates the operating mode of the equipment in batch processing, where the first slab 40 originates solely from the casting equipment 1. In this operating mode, the first slab 40 can be accelerated after being cut at the dividing device 3, and thus rapidly passes through the exit device 5a and the supply device 5b. Consequently, these first slabs quickly reach the rolling mill 8. This keeps the temperature loss of the first slab 40 as low as possible. Then, in the rolling mill 8, the speed of the first slab 40 must be adjusted according to the process-defined material flow.

[0062] exist Figure 4 In this process, the equipment operates in batch mode, but additional slabs 41 are introduced via a supply device 5b. These slabs 41 can be second slabs 42 or cold slabs 43 already produced by the second casting equipment 2. The first slab 40 can either be directly transported to the rolling mill 8, or if the material flow does not allow this, the first slab must be sent out in the exit device 5a and fed into the slab transport device 16, which then feeds the first slab into the heating furnace 5c and the supply device 5b. Then, if the first casting equipment 1 and the second casting equipment 2 are not fully loaded, for example, for maintenance of one of the two casting equipments, cold slabs 43 are fed in. In batch operation, the finishing rolling temperature can be controlled in the following ways: The rolling speed is constant. The finishing temperature is adjusted by the intensifying heating device 6 and the second intensifying heating device 10 to achieve the desired product quality compared to continuous production. - It can increase or decrease the rolling speed in order to achieve the desired final product quality through the desired final rolling temperature.

[0063] In this embodiment, the heating furnace 5c has two motion zones 5d and 5e. The first motion zone 5d is assigned to the feeding device and the second motion zone 5e is assigned to the feed inlet of the heating furnace 5c. These two motion zones 5d and 5e can move in a completely decoupled manner.

[0064] exist Figure 5 A variant of the apparatus with a first induction heating furnace 25 is shown instead of an outlet device. In this embodiment, heating of the first slab produced using the first casting apparatus 1 is only necessary when producing a quality that must be slowly cast. For a quality requiring rapid casting, heating by means of the first induction heating furnace 28 is not required. A slab handling device 25a for introducing and withdrawing the slab is arranged immediately after the first induction heating furnace. The slab conveying device 16 transports the slab either toward or away from the slab handling device 25a, for example, to a slab warehouse. In the second casting apparatus 2, a second induction heating furnace 28 is arranged after the first conveying device 18, which can also be insulated. This second induction heating furnace 28 must be sized such that it can heat the slowly cast second slab to the temperature necessary for the rolling process in the rolling mill 8. A preferably insulated first buffer storage 28a is arranged after the second induction heating furnace 28. The first buffer storage 28a can store the produced second slab until it can be fed to the rolling mill 8 by means of the slab conveying device 16 and the slab manipulating device 25a. The third induction heating furnace 27 is assigned to the introduction of cold slabs. A second insulated buffer storage 26 is connected in front of the heating furnace, in which heated cold slabs can be stored until they are needed.

[0065] Although the invention has been illustrated and described in detail with reference to preferred embodiments, the invention is not limited to the disclosed examples, and other variations can be derived by those skilled in the art without departing from the scope of protection of the invention.

[0066] List of reference numerals in the attached diagram: 1. First casting equipment 2 Second casting equipment 3 First dividing device 4 Second dividing device 5a Export device 5b Supply device 5C heating furnace 5d First Movement Zone 5e Second Movement Zone 6. Enhanced heating device 7. Descaling device and / or enhanced cooling device 8 Rolling Mill 8a First Rolling Stand 9. Third dividing device 10 Second Enhanced Heating Device 11. Enhanced cooling system 12 Another rolling mill 13 Cooling device 14. Shearing machine 15. Winding device 16. Slab conveying device 17. Transport equipment 18. Connecting device 20 roughing mill stands 22 Automatic flame cleaning device 23 Heating device 25 First-induction heating furnace 25a Slab Control Device 26 Second Buffer Storage 27. Third-stage induction heating furnace 28 Second Induction Heating Furnace 28a First Buffer Storage 30 Continuous casting billet guide section 31 Continuous casting billet guide rollers 40 First slab 41 Slab 42 Second slab 43 Cold-rolled billet 45. Automated mechanisms G Casting direction L-shaped spacing.

Claims

1. An apparatus for manufacturing metal strip, comprising the following components: - A continuous first casting device (1), wherein the end of the casting device (1) is determined by a continuous casting billet guide roller (31) arranged as the last continuous casting billet guide roller. - A first dividing device (3) arranged behind the first casting equipment (1) for dividing the first slab (40). - A rolling mill (8) arranged behind the first dividing device (3), wherein the beginning of the rolling mill is determined by a rolling stand (8a) arranged as the first rolling stand. - Shearing machine (14) arranged behind the rolling mill (8). - A take-up device (15) arranged behind the shearing machine (14). - An automation mechanism (45) capable of controlling the equipment in such a way that it can operate in either a continuous or batch operation mode. Its features are, Between the first dividing device (3) and the rolling mill (8) ○ An outlet device (5a) is provided for the first slab (40) to be cut, the outlet device being capable of exporting the first slab (40) to be cut transversely to the casting direction (G), wherein ○ Immediately following the discharge device (5a) is a supply device (5b) with a heating furnace (5c) for inputting the cut slab (41), wherein the supply device (5b) is capable of inputting the cut slab (41) transverse to the casting direction (G), wherein The discharge device (5a) and supply device (5b) are configured such that the first slab (41) being cast can be directly transported from the discharge device (5a) to the supply device (5b) along the casting direction (G), and can be further guided by the supply device (5b) along the casting direction (G). in ○ The distance (L) between the end of the first casting equipment (1) and the beginning of the rolling mill (8) is less than 100m, preferably less than 80m, and particularly preferably less than 60m, wherein A continuous second casting device (2) with a second dividing device (4) is arranged in parallel with the first casting device (1), wherein the second casting device (2) is connected to the heating furnace (5c) via a first connecting device (18), preferably a roller conveyor, a feeding device (5b), and a heating furnace (5c) in such a way that the second slab (42) produced by the continuous second casting device (2) can be fed into the heating furnace (5c) and the feeding device (5b).

2. The equipment for manufacturing metal strips according to claim 1, characterized in that, The export device (5a), the supply device (5b), and the heating furnace (5c) are connected to each other such that the first cut slab (40) delivered by the export device (5a) can be fed into the heating furnace (5c) and the supply device (5b) via the slab conveying device (16), preferably by means of the slab conveying device (16).

3. The apparatus for manufacturing metal strips according to any one of claims 1-2, characterized in that, The automated mechanism (45) is able to operate the output device (5a) and the supply device (5b) such that the first slab (40) cut at the first dividing device (3) can be transported to the rolling mill (8) at a transport speed greater than the casting speed of the first casting equipment (1).

4. The apparatus for manufacturing metal strips according to any one of claims 1-3, characterized in that, The heating furnace (5c) is preferably a walking beam furnace, wherein the slab to be cut is oriented in the heating furnace (5c) along the casting direction (G) and transverse to the casting direction (G) and conveyed to the feeding device (5b), wherein preferably the heating furnace (5c) has at least two motion zones (5d) that can operate independently of each other, wherein the first motion zone (5d) of the walking beam furnace is assigned to the feeding device and the second motion zone (5e) is assigned to the feed port of the heating furnace for the slab to be cut.

5. The apparatus for manufacturing metal strips according to any one of claims 1-4, characterized in that, The heating furnace (5c) has a maximum length of 30m.

6. The apparatus for manufacturing metal strips according to any one of claims 1-5, characterized in that, The supply device (5c) and the heating furnace (5c) are connected to the conveying device (17), wherein the conveying device (17) is capable of supplying cold slabs (43) preferably from the slab warehouse.

7. The apparatus for manufacturing metal strips according to claim 6, characterized in that, The conveying device (17) includes a heating furnace (23).

8. The apparatus for manufacturing metal strips according to any one of claims 1-7, characterized in that, The minimum lengths of the supply device (5b) and the discharge device (5a) are determined by the following formula: The calculation is performed where 'a' is the design factor, 'Y' is the specific gravity of the roll material with respect to its width, expressed in t / m, and 'ρ' is the specific gravity of the roll material at the temperature following casting in the first casting equipment, expressed in t / m. 3 The density is calculated, and d is the maximum casting gap, measured in meters, that the first casting equipment can set.

9. The apparatus for manufacturing metal strips according to any one of claims 1-8, characterized in that, The lengths of the supply device (5b) and the discharge device (5a) are respectively a maximum of 30m, preferably a maximum of 25m, and particularly preferably a maximum of 20m.

10. An apparatus for manufacturing metal strip, comprising the following components - A continuous first casting device (1), wherein the end of the casting device (1) is determined by a continuous casting billet guide roller (31) arranged as the last continuous casting billet guide roller. - A first dividing device (3) arranged behind the first casting equipment (1) for dividing the first slab (40). - A rolling mill (8) arranged behind the first dividing device (3), wherein the beginning of the rolling mill (8) is determined by a rolling stand (8a) arranged as a first rolling stand. - Shearing machine (14) arranged behind the rolling mill (8). - A take-up device (15) arranged behind the shearing machine (14). - An automation mechanism (45) capable of controlling the equipment in such a way that it can operate in either a continuous operation mode or a batch operation mode. Its features are, Between the first dividing device (3) and the rolling mill (8) ○ A first-sensor heating furnace (25) was installed. ○ A slab manipulation device (25a) for inputting and discharging the cut slabs is arranged immediately behind the first induction heating furnace (25), wherein The slab manipulation device (25a) is capable of inputting or discharging the cut slab transverse to the casting direction (G) and of transporting the cut slab along the casting direction, wherein The slab manipulation device (25a) is connected to the first induction heating furnace (25) in such a way that the first slab to be cast can be directly fed into the slab manipulation device (25a), wherein ○ The distance between the end of the first casting equipment (1) and the beginning of the rolling mill (8) is less than 100m, preferably less than 80m, and particularly preferably less than 60m. A continuous second casting device (2) with a second dividing device (4) is arranged parallel to the first casting device (1), wherein the second casting device (2) is connected to a second induction heating furnace (28) via a first connecting device (18) so as to input the second slab (42) produced by the second casting device (2) to the second induction heating furnace (28), wherein the slab conveying device (16) is connected to the second induction heating furnace (27) such that the second slab (42) can be input to the slab manipulation device (25a) via the slab conveying device.

11. An apparatus for manufacturing metal strips according to claim 10, characterized in that, The length of the first induction heating furnace (25) and the second slab manipulation device (25a) is a maximum of 30m, preferably a maximum of 25m, and particularly preferably a maximum of 20m.

12. An apparatus for manufacturing metal strips according to any one of claims 10-11, characterized in that, The slab manipulation device (25a) is connected to the conveying device (17), wherein the conveying device (17) is capable of supplying cold slabs (43), preferably from the slab warehouse.

13. An apparatus for manufacturing metal strips according to any one of claims 1-12, characterized in that, The first casting equipment (1) can produce a first slab (40) with a thickness of 100 to 200 mm, preferably 120 to 160 mm.

14. An apparatus for manufacturing metal strips according to any one of claims 1-12, characterized in that, The continuous second casting equipment (2) produces a second slab with a thickness range substantially corresponding to that of the first slab or a second slab with a maximum thickness of 250 mm (42), preferably the second slab can be reduced in thickness by means of a roughing mill stand (20).

15. A method for manufacturing a metal strip using the apparatus according to any one of claims 1-14, characterized in that, The equipment can be operated in continuous operation mode or batch operation mode by means of an automated mechanism (45) according to the mechanical strength, thickness, CO2 footprint, and / or casting speed of the metal strip to be produced.

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