Waste cleaning system, metal strip production line and waste cleaning method

Abstract

The invention relates to a scrap cleaning system (1) for a metal strip production line (50), in particular a continuous casting and rolling compound system, to a metal strip production line (50) having such a scrap cleaning system (1), and to a method (100) for cleaning scrap from a metal strip production line (50). A cutting device (10) for cutting the metal strip (2) fed to the scrap cleaning system (1) and a strip trap (20) arranged upstream of the cutting device (10) in the transport direction (T) of the metal strip (2) are provided. The strip trap (20) has a pivotally mounted trap arm (21).

Description

Technical Field

[0001] The present invention relates to a scrap cleaning system for a metal strip production line, in particular a continuous casting and rolling complex, a metal strip production line having such a scrap cleaning system, and a method for cleaning scrap from a metal strip production line. Background Art

[0002] In metal strip production lines, in particular in continuous casting and rolling plants for endless strip production (endless strip production plants in English), (continuously) cast ingots or billets made therefrom are rolled into strips with the aid of rolling lines. At the end of each production line, the rolled strip can then be coiled by a coiler. When the metal coil (coil in English) formed during the coiling process reaches a predetermined size or the coiled strip reaches a predetermined length, the strip is cut in the transport direction before the coiler with the aid of a follow-up strip shear (which follows the speed of the strip), such as a drum shear or similar equipment. Coiling of a new metal coil can then begin. In order to enable continuous production, additional coilers are usually provided, to which the rolled strip can be selectively conveyed.

[0003] Especially when rolling thin strip, such as strip with a thickness of 1 mm or less, problems can arise due to malfunctions in line components or during threading of the strip into the coiler due to its greater elasticity or flexibility and higher conveying speeds compared to thicker strip. For example, so-called "cobbles" can form, where the strip is severely deformed in a strip section, hindering further conveying. In such cases, the line or continuous casting and rolling mill must be interrupted to remove the relevant strip section. To do this, the strip must be manually cut, for example, using multiple gas cuts, and then hoisted out of the line, for example, using a workshop crane. This operation is often very tedious due to the length of the strip section to be removed. For example, if a cobble forms in the coiler area, the strip to be scrapped must be removed from the induction furnace inlet before the finishing train to the coiler area, and also from the laminar cooling area between the finishing train and the coiler area. The scrap must then be manually cut to a manageable size and processed.

[0004] It is known from WO2009 / 121678 that in the event of an unplanned production interruption, the continuous casting process in a continuous casting and rolling plant can be maintained by: a) cutting a strand segment with a first shear; b) lifting the bottom of the strand segment from the roller table with a lifting device; c) cutting the raw material passing through the first shear into scrap blocks with the first shear, transporting the scrap blocks out, and removing the strand segment before the continuous casting and rolling plant resumes operating capacity. Summary of the Invention

[0005] It is an object of the present invention to improve the scrapping of strip sections in a metal strip production line, in particular to make it easier and / or faster.

[0006] This object is achieved by a scrap cleaning system for a metal strip production line, a metal strip production line and a method for cleaning scrap from a metal strip production line according to the independent claims.

[0007] Preferred embodiments are subject matter of the independent claims and the following description.

[0008] According to a first aspect of the present invention, a scrap cleaning system for a metal strip production line, particularly a continuous casting and rolling complex, comprises a cutting device for cutting a metal strip fed to the scrap cleaning system, and a strip catcher arranged upstream of the cutting device in the direction of transport of the metal strip. The strip catcher comprises a pivotally supported catch arm.

[0009] A cutting device within the meaning of the present invention is preferably a device designed to cut a metal strip. The cutting device can, for example, cut the metal strip into a first strip section and a second strip section following in the direction of transport. The cutting device can, for example, be designed as a strip shear, such as a hydraulically operable toggle shear.

[0010] A strip catcher, within the meaning of the present invention, is preferably a device designed to collect or catch a metal strip, particularly the incoming head end. For example, a strip catcher can prevent the metal strip from being transported uncontrolled or at least unbraked beyond the end of a production line, particularly a continuous casting and rolling mill. For this purpose, conventional strip catchers have a catch basket that blocks the transport path of the metal strip. The strip catcher is preferably positioned after the last coiler in the production line in the direction of transport.

[0011] One aspect of the present invention is based on a system comprising a cutting device for cutting a metal strip and a strip catcher with a pivotable catch arm located upstream of the strip in the direction of transport. This system can be located, for example, downstream of the last coiler in a metal strip production line, particularly a continuous casting and rolling mill, and suitably constitutes a scrap disposal system. The pivotable catch arm frees up the transport path to the cutting device, which is blocked during normal production. The end-of-line cutting device automatically or at least semi-automatically shreds the metal strip segments to be scrapped, eliminating the need for laborious lifting and subsequent (manual) shredding of the segments from the production line. Consequently, the scrap disposal system significantly speeds up the removal of strip segments from the production line, thereby reducing equipment downtime associated with production failures. Furthermore, the end-of-line cutting device reduces the risk of injuries such as cuts or burns during manual strip cutting. Furthermore, the risk of damage to production line components, such as rollers or cooling heads, during the necessary gas cutting is reduced.

[0012] The preferred embodiments of the present invention and their improvements are described below. Unless explicitly excluded, these embodiments can be combined with each other in any way and can be combined with the aspects of the present invention described below.

[0013] In order to be able to selectively release the transport path to the cutting device, in particular downstream of the last coiler in the production line, according to the present invention, the capture arm can be pivoted between a capture position and a release position. In the capture position, the capture arm blocks the transport path through the waste disposal system. For example, in the capture position, the capture arm can extend at least partially into the transport path of the metal strip, so that the metal strip is deflected from the transport direction by the capture arm into the capture basket. In this way, in the capture position, the capture arm can reliably prevent the metal strip from being undesirably conveyed to the cutting device during normal operation of the production line. This can prevent possible damage to the cutting device and / or uncontrolled discharge of the metal strip from the end of the production line.

[0014] On the contrary, in the release position, the metal strip that is delivered to the waste material cleaning system can pass through the strip catcher.For example, in the release position, the catching arm can be pivoted out from the transport path of the metal strip.

[0015] In order to reliably transport the metal strip to the cutting device in this case and, if necessary, position it appropriately for cutting, it is advantageous to provide a first transport device for conveying the metal strip past the strip catcher. The transport device can, for example, be designed as a roller conveyor, in particular a roller table with a plurality of rollers. Advantageously, at least some of the rollers are actively driven, i.e., equipped with a drive or coupled to one. In this regard, the first transport device is preferably an active transport device. The first transport device also enables the scrap removal system to be seamlessly integrated into the production line, for example by connecting it to the transport path leading to the last coiler.

[0016] The first transport device preferably extends through a transport section upstream of the strip catcher in the transport direction and a transport section downstream of the strip catcher in the transport direction, in particular extending all the way to the cutting device. For example, the rollers of the first transport device can be positioned both upstream and downstream of the strip catcher. In this regard, the transport device can transport the metal strip from the last coiler of the production line to the cutting device, or at least past the strip catcher.

[0017] In order to assist the transportation of the metal strip in the scrap cleaning system, a second transport device is preferably provided for (in particular selectively or specifically) transporting the metal strip to the cutting device. The second transport device is suitably arranged after the strip catcher and immediately before the cutting device in the transport direction. The second transport device may, for example, have conveyor rollers, also referred to as drive rollers, which are provided for actively transporting the metal strip. The second transport device is suitably arranged or can be arranged so that the transport path through the scrap cleaning system extends at least in sections between the first and second transport devices. Preferably, the metal strip is supported on the lower side by the first transport device (such as a roller conveyor), while the second transport device (such as a drive roller) is pressed against the upper side of the metal strip with a predetermined pressure.

[0018] By means of the first and / or second transport devices, the head end (i.e., the leading end in the transport direction) of the metal strip or metal strip segment to be processed can be positioned, for example, downstream of the cutting device, so that operation of the cutting device produces a processable metal strip block or scrap block. To facilitate the removal of such scrap blocks, a container is preferably provided for receiving the metal strip segments cut by the cutting device. The container is advantageously positioned downstream of the cutting device in the transport direction, for example, in such a manner that the scrap blocks can fall into the container. The container, also referred to as a scrap drum, can particularly be a shipping container.

[0019] According to the second aspect of the present invention, a metal strip production line, in particular a continuous casting and rolling mill, includes a scrap removal system according to the first aspect of the present invention. This scrap removal system can reduce production line downtime and associated production losses caused by steel buildup. Furthermore, this scrap removal system can improve operational safety, as fewer operators are required to remove metal strip segments from the production line, particularly requiring fewer manual work steps (e.g., torch cutting). Furthermore, fewer workshop crane activities may be required.

[0020] A metal strip production line may, for example, comprise a roughing mill, an induction furnace, a finishing mill, a cooling section, and one or more coilers. To enable automatic or semi-automatic discharge and scrapping of the metal strip from such a line, for example, if problems arise when threading the strip into one of the coilers, a scrap disposal system is preferably arranged after the last component of the line in the direction of transport of the metal strip through the line, in particular after the last coiler in that direction. The scrap disposal system can, in particular, be attached externally to the production line, thereby extending the line.

[0021] In a method for removing scrap from a metal strip production line, in particular from a continuous casting and rolling mill, according to a third aspect of the present invention, a metal strip located in the metal strip production line is cut into a first metal strip segment and a second metal strip segment, wherein the first metal strip segment precedes the second metal strip segment in a transport direction through the metal strip production line. In this sense, the first metal strip segment can be understood as the preceding metal strip segment, and the second metal strip segment can be understood as the succeeding metal strip segment.

[0022] After cutting, the first metal strip segment is removed from the metal strip production line. A second metal strip segment is conveyed through the metal strip production line to a scrap handling system, typically located downstream of the last coiler. The scrap handling system includes a cutting device for cutting the metal strip conveyed to the scrap handling system and a strip catcher positioned upstream of the cutting device in the direction of transport of the metal strip. The strip catcher includes a pivotally supported catch arm, which can pivot between a catch position, in which the catch arm blocks the transport path through the scrap handling system, and a release position, in which the metal strip conveyed to the scrap handling system can pass through the strip catcher. The second metal strip segment is then cut into a plurality of metal strip blocks (also referred to as scrap blocks) using the cutting device of the scrap handling system. Cutting of the second metal strip segment can be performed automatically or at least semi-automatically, thereby reducing the need for operating personnel and improving operational safety.

[0023] Advantageously, the metal strip is initially cut in such a way that the first metal strip segment comprises steel buildup, i.e., an undesirably deformed strip segment. Since this deformation makes further transport of the first metal strip segment through the production line difficult or even impossible, the first metal strip segment is preferably lifted out of the metal strip production line. For example, the first metal strip segment can be lifted out of the production line using a crane.

[0024] To enable the removal of waste from the production line, preferably before the second metal strip segment is delivered to the waste disposal system, a catch arm of a strip catcher of the waste disposal system, located upstream of the cutting device in the direction of transport, is pivoted from a catch position to a release position. Preferably, in the catch position, the catch arm blocks the transport path through the waste disposal system. In particular, in the catch position, the catch arm reliably prevents the metal strip from being unintentionally delivered to the cutting device during normal production line operation. This prevents possible damage to the cutting device and / or uncontrolled discharge of the metal strip from the end of the production line.

[0025] In contrast, in the release position, the metal strip fed to the scrap disposal system can advantageously pass through the strip catcher.

[0026] Once the metal strip has entered the waste disposal system or has been released from the transport path of the waste disposal system, it can be cut into metal strip chunks by the cutting device. The metal strip chunks are preferably conveyed to a container located downstream of the cutting device in the direction of transport. For example, the metal strip chunks can fall into a container also known as a waste bucket. Collecting the scrap chunks in the container allows them to be easily and efficiently transported away.

[0027] By manually cutting the metal strip into the first and second metal strip segments and removing the first metal strip segment, the efficiency of scrapping the metal strip segments in the production line can be further improved. Conversely, at least the second metal strip segment is cut into a plurality of metal strip blocks by means of a cutting device. Preferably, however, the second metal strip segment is conveyed to the scrap disposal system, in particular to the cutting device via the scrap disposal system, in an automated or semi-automated manner. This means that the control or operation of the production line, in particular the scrap disposal system, such as the corresponding conveying device and / or cutting device, requires no or minimal operator involvement, at least with respect to the second metal strip segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] These characteristics, features, and advantages, as well as the manner and method for achieving them, will become clearer and easier to understand with reference to the following description of an embodiment, which will be described in detail with reference to the accompanying drawings, at least partially shown in schematic form:

[0029] Figure 1 An example of a metal strip production line with a scrap cleaning system;

[0030] Figure 2 An example of a method of cleaning scrap from a metal strip production line; and

[0031] Figure 3 An example of a waste removal system.

[0032] Where appropriate, the same reference numerals are used in the drawings to represent the same or corresponding elements of the present invention. DETAILED DESCRIPTION

[0033] Figure 1 An example of a metal strip production line 50 with a scrap handling system 1 is shown. In this example, the metal strip production line 50 is a continuous casting and rolling complex for endlessly producing metal strip 2. In addition to the scrap handling system 1, it also includes a casting machine 51, a descaling unit 53, a roughing train 54, an induction furnace 55, a finishing train 56, a cooling section 57, a cutting unit 58, and a plurality (in this example, three) of coilers 59, 60, and 61. The scrap handling system 1 is connected downstream of the last coiler 61 in the transport direction T of the metal strip 2 through the production line 50.

[0034] A partially solidified metal strand 63 is produced by means of a crystallizer 62 of a casting machine 51. Following the casting machine 51 is a descaling device 53 for descaling the strand 63. The strand 63 is then rolled into an intermediate strip 65 by means of a plurality (three in the example shown) of roughing stands 64a, 64b, and 64c of a roughing train 54. The intermediate strip 65 is heated by an induction furnace 55 and descaled again by means of another descaling device 53 to prevent oxide scale from being rolled into the strip in the subsequent finishing train 56. To achieve the desired final strip thickness, the finishing train 56 has a plurality (five in the example shown) of finishing stands 66a, 66b, 66c, 66d, and 66e. In a cooling section 57 (e.g., a laminar cooling zone), the thus thinned metal strip 2 is cooled to a temperature suitable for coiling. When the metal coil consisting of the wound metal strip 2 wound by means of one of the three coilers 59, 60, 61 reaches a predetermined size, the metal strip 2 can be cut by means of the cutting device 58 and continued to be wound into a new metal coil on another one of the three coilers 59, 60, 61.

[0035] In particular, when switching between the currently active coilers 59, 60, 61, i.e., when threading the metal strip 2 into another coiler 59, 60, 61, the metal strip 2 may be deformed due to its higher elasticity or flexibility compared to the strand 63 or the intermediate strip 65. Such deformed areas of the metal strip 2 can no longer be conveyed or coiled, resulting in a buildup of the metal strip 2.

[0036] However, undesirable deformations of the metal strip 2 and the associated accumulations can in principle also occur at other components of the production line 50. This is the case in particular if further cutting devices (not shown) are provided upstream of the roughing train 54 or the finishing train 56 in the transport direction T, for example to produce billets or to cut the metal strip 2 after reaching a predetermined length.

[0037] This accumulation and the associated further deformation of the metal strip 2 is called "steel pile" 71 and forces the production in the production line 50 to be stopped. In order to be able to put the production line 50 back into operation, the steel pile 71 must first be removed. Since the shutdown of the production line 50 and the subsequent restart lead to uncertain production parameters, or at least the failure to meet predetermined production parameters, it often happens that the section of the metal strip 2 located in the cooling section 57 and / or in the area of ​​the finishing train 56 during the restart operation does not meet any predetermined quality standards. Therefore, in addition to the steel pile 71 or the first metal strip section 2a containing the steel pile 71, this additional second metal strip section 2b must also be removed from the production line 50. For this purpose, a scrap cleaning system 1 can be used, which is combined with the following Figure 2 Provide explanation.

[0038] Figure 2 A method 100 for removing scrap from a metal strip production line, in particular a continuous casting and rolling plant, is shown.

[0039] In method step S1, a metal strip located in a metal strip production line is cut into a first metal strip segment and a second metal strip segment. The first metal strip segment is located ahead of the second metal strip segment in the direction of transport. The metal strip is advantageously cut manually, for example using appropriate torch cutting. This allows, in particular, the steel pile to be separated from the metal strip. The strip segment forming the steel pile preferably corresponds to at least a portion of the first metal strip segment. Accordingly, the second metal strip segment advantageously corresponds to a metal strip segment that, while generally capable of further processing after the production line is restarted, will not meet predetermined quality standards.

[0040] In a further method step S2, the first metal strip segment separated from the metal strip is removed from the metal strip production line. This is also advantageously done manually. For example, a workshop crane can be used for this purpose.

[0041] By removing the first metal strip segment, particularly the strip segment containing the steel pile, from the production line, the metal strip or second metal strip segment can be transported unhindered in the transport direction through the metal strip production line. Accordingly, in a further method step S3, the second metal strip segment is advantageously passed through the metal strip production line, past a coiler, and transported to a scrap disposal system. There, in a further method step S4, the second metal strip segment can be cut into a plurality of metal strip chunks using a cutting device of the scrap disposal system. The metal strip chunks can be collected, for example, in a container located downstream of the cutting device, and then easily transported away.

[0042] The conveying of the second metal strip segment in method step S3 can be at least partially automated. Alternatively or additionally, the cutting of the second metal strip segment in method step S4 can also be at least partially automated. The conveying in method step S3 and the cutting in method step S4 can also be understood together as a waste treatment step, in which the metal strip or the second metal strip segment is gradually moved in the direction of transport and the head end region (i.e., the leading end of the strip in the direction of transport) is cut off.

[0043] Figure 3 The waste disposal system 1 is shown in detail, for example for Figure 1 The scrap processing system 1 includes a cutting device 10, a strip catcher 20 arranged upstream of the cutting device 10 in the transport direction T of the metal strip 2, a first transport device 30, a second transport device 32, and a container 40. The cutting device 10 is configured to cut the metal strip 2 to be scrapped, which is fed to the scrap processing system 1, into metal strip chunks 3, which are collected by the container 40.

[0044] The metal strip 2 can be conveyed to the scrap disposal system 1, for example, by means of a lower drive roller 67 that is adjustable longitudinally parallel to the transport direction T in the region of the last coiler 61 of the production line 50. The metal strip 2 is thereby guided between the lower drive roller 67 and an upper drive roller 68 that is arranged stationary in the transport direction T. If the rotation axis 70 of the lower drive roller 67 is positioned in the transport direction T before the rotation axis 69 of the upper drive roller 68 so that a tangent to the lower drive roller 67 or the upper drive roller 68 at the intersection of the connecting line connecting the rotation axes 69 and 70 with the lower drive roller 67 or the upper drive roller 68 is inclined relative to the transport direction T, the metal strip 2 can be run under the coiler 61 in the direction of the coiler 61. On the other hand, if the rotation axes 69 and 70 are positioned at the same height in the transport direction T so that the tangent of the lower drive roller 67 or the upper drive roller 68 at the intersection of the connecting line connecting the rotation axes 69 and 70 to each other and the lower drive roller 67 or the upper drive roller 68 extends parallel to the transport direction T, the metal strip 2 can continue to run along the transport direction T.

[0045] The first transport device 30 is used to transport the metal strip 2 in the waste disposal system 1, for example, a roller conveyor or a conveyor having multiple Figure 3 , a roller table of transport rollers 31 is schematically shown. For the sake of clarity, only one transport roller 31 is labeled here. Advantageously, at least some of the transport rollers 31 are actively driven, for example by means of a motor (not shown). Thus, the first transport device 30 is able to transport the metal strip 2 in the transport direction T, in particular past the strip catcher 20 to the cutting device 10. In order to support the metal strip 2 during transport, a second transport device 32 is provided, for example in the form of a drive roller. This is preferably arranged on the (upper) side of the metal strip 2 facing away from the first transport device 30, so that the metal strip 2 can pass between the first and second transport devices 30, 32.

[0046] Of course, the lower drive roller 67 and the upper drive roller 68 arranged upstream of the scrap disposal system 1 in the transport direction T can also be used to transport the metal strip 2 in the scrap disposal system 1, or at least to assist in its transport. In particular, instead of or in addition to the first and / or second transport devices 30, 32, the drive rollers 67, 68 can convey the metal strip 2 to be scrapped to the cutting device or into the cutting device 10, or at least convey a metal strip segment through the cutting device 10.

[0047] The strip catcher 20 has a catch arm 21 that can be pivoted between a catch position, schematically indicated by a dotted line, in which the catch arm 21 blocks the transport of the metal strip 2 through the scrap cleaning system 1, and a release position in which the metal strip 2 can pass through the strip catcher 20. In the catch position, the catch arm 21 can prevent, in particular, the metal strip 2 from being transported beyond the end of the production line 50 during normal operation of the production line 50 in the event of a fault (for example, if the front end of the strip in the transport direction T fails to successfully pass through the last coiler, in this example, the coiler 61), and in the process potentially endangering materials and personnel in the end area of ​​the production line 50.

[0048] The catch arm 21 can in particular be a hydraulically driven catch arm 21 .

[0049] The cutting device 10 preferably includes two cutting tools 11, 12, such as two blades or a blade and an anvil, arranged so that the metal strip 2 can be passed between them in the transport direction T. Once a predetermined length of metal strip 2 has been conveyed past the cutting tools 11, 12, the cutting tools 11, 12 can be moved toward each other, thereby cutting off a metal strip block 3. Because continuous transport of the metal strip 2 is not required during scrap processing, unlike conventional continuous casting and rolling mill operation, where metal strands must be continuously produced and removed, the cutting device 10 can be configured as a strip shear having the cutting tools 11, 12 fixed in the transport direction T, in particular, a hydraulically operated toggle shear. More complex drum or swing shears with segmented moving cutting tools are not necessary. Using the transport devices 30 and 32, the metal strip 2 can be transported stepwise in the transport direction T, and a metal strip block 3 can be cut off in each step.

[0050] However, it is also conceivable to continuously convey the metal strip 2 through the scrap disposal system 1 and to cut it with the aid of a correspondingly arranged cutting device 10 (eg a drum or pendulum shear).

[0051] A container 40 (also referred to as a waste container) is advantageously arranged directly after the cutting device 10 in the transport direction T. The container 40 can be arranged in particular so that the cut metal strip pieces 3 do not need to be transported further, but rather automatically fall into the container 40 after being cut from the metal strip 2. To this end, the container 40 is advantageously arranged slightly below the plane defined by the metal strip 2. If necessary, a guide device can also be provided for the metal strip pieces 3 to ensure that the container 40 can reliably collect them.

[0052] Although the present invention has been described in detail through the preferred embodiments, the present invention is not limited to the disclosed examples, and those skilled in the art may derive other variations therefrom without departing from the scope of protection of the present invention.

[0053] Reference Signs List

[0054] 1 Waste cleaning system

[0055] 2 metal strips

[0056] 2a, 2b First and second metal belt segments

[0057] 3 metal strips

[0058] 10 Cutting device

[0059] 11, 12 Cutting Tools

[0060] 20 Strip Catcher

[0061] 21 Capture Arm

[0062] 30 First transport device

[0063] 31 transport rollers

[0064] 32 Second transport device

[0065] 40 containers

[0066] 50 Metal Strip Production Line

[0067] 51 Casting Machine

[0068] 53 Descaling device

[0069] 54 Roughing Mill

[0070] 55 Induction furnace

[0071] 56 Finishing Mill

[0072] 57 Cooling section

[0073] 58 cutting device

[0074] 59, 60, 61 coilers

[0075] 62 Crystallizer

[0076] 63 Metal ingots

[0077] 64a-c roughing mill stand

[0078] 65 median strip

[0079] 66a-e finishing mill stand

[0080] 67 Lower drive roller

[0081] 68 Upper drive roller

[0082] 69, 70 rotation axis

[0083] 71 Steel Pile

[0084] 100 methods

[0085] S1-4 Method Steps

[0086] T Transport direction

Claims

1. A scrap cleaning system (1) for a metal strip production line (50), in particular a continuous casting and rolling complex, comprising a cutting device (10) for cutting a metal strip (2) fed to the scrap cleaning system (1) and a strip catcher (20) arranged upstream of the cutting device (10) in the transport direction (T) of the metal strip (2), the strip catcher having a pivotably mounted catch arm (21). in, The catch arm (21) is pivotable between a catch position in which the catch arm (21) blocks the transport path through the scrap cleaning system (1) and a release position in which the metal strip (2) delivered to the scrap cleaning system (1) can pass through the strip catcher (20).

2. The waste disposal system (1) according to claim 1, comprising a first transport device (30) for conveying the metal strip (2) past the strip catcher (20), wherein: The first transport device (30) extends over a transport section before the strip catcher (20) along the transport direction (T) and a transport section after the strip catcher along the transport direction (T).

3. The waste disposal system (1) according to claim 1, comprising a second transport device (32) for conveying the metal strip (2) into the cutting device (10), wherein: The second transport device (32) is arranged or can be arranged in the transport direction (T) after the strip catcher (20) and immediately before the cutting device (10), so that the transport path through the waste cleaning system (1) extends at least in sections between the first and second transport devices (30, 32).

4. The waste disposal system (1) according to any one of the preceding claims, comprising a container (40) which is arranged behind the cutting device (10) in the transport direction (T) for receiving the metal strip segments (2b) cut by the cutting device (10).

5. A metal strip production line (50), in particular a combined continuous casting and rolling plant, comprising a waste disposal system (1) according to any one of the preceding claims.

6. The metal strip production line (50) according to claim 5, wherein: The scrap cleaning system (1) is arranged in the transport direction (T) of the metal strip (2) through the production line (50) after the last coiler (61) along the transport direction (T).

7. A method (100) for removing scrap from a metal strip production line (50), in particular from a continuous casting and rolling complex, comprising: - cutting (S1) a metal strip (2) in the metal strip production line (50) into a first metal strip segment (2a) and a second metal strip segment (2b), wherein: The first metal strip segment (2a) is located before the second metal strip segment (2b) in the transport direction (T) through the metal strip production line (50); - removing (S2) the first metal strip segment (2a) from the metal strip production line (50), - conveying (S3) the second metal strip segment (2b) through the metal strip production line (50) to a scrap cleaning system (1), the scrap cleaning system comprising a cutting device (10) for cutting the metal strip (2) conveyed to the scrap cleaning system (1) and a strip catcher (20) arranged in front of the cutting device (10) along the transport direction (T) of the metal strip (2), the strip catcher comprising a pivotably supported catch arm (21), wherein the catch arm (21) is pivotable between a catch position, in which the catch arm (21) blocks the transport path through the scrap cleaning system (1), and a release position, in which the metal strip (2) conveyed to the scrap cleaning system (1) can pass through the strip catcher (20); and - Cutting (S4) the second metal strip segment (2b) into a plurality of metal strip blocks (3) by means of the cutting device (10) of the waste disposal system (1).

8. The method (100) according to claim 7, wherein: The first metal strip segment (2a) is lifted out of the metal strip production line (50).

9. The method (100) according to claim 7 or 8, wherein: Before the second metal strip segment (2b) is conveyed to the scrap cleaning system (1), a catch arm (21) of a strip catcher (20) of the scrap cleaning system (1) arranged in front of the cutting device (10) along the transport direction (T) is pivoted from a catch position, in which the catch arm (21) blocks the transport path through the scrap cleaning system (1), to a release position, in which the second metal strip segment (2b) can pass through the strip catcher (20).

10. The method (100) according to any one of claims 7 to 9, wherein: The metal strip (3) is conveyed into a container (40) arranged downstream of the cutting device (10) in the transport direction (T).

11. The method (100) according to any one of claims 7 to 10, wherein: - manually cutting the metal strip (2) into the first and second metal strip segments (2a, 2b) and removing the first metal strip segment (2a), and - automatically or semi-automatically cutting the second metal strip segment (2b) into a plurality of metal strip pieces (3) by means of the cutting device (10).

Images