Reversing rolling of rolled products made of aluminum
By introducing a transfer device and a waiting area into the hot aluminum rolling mill, the problem of excessively long rolling pause time during the reversible rolling process of the hot aluminum rolling mill was solved, resulting in a significant improvement in productivity and space savings during the modification process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SMS GROUP GMBH
- Filing Date
- 2024-10-25
- Publication Date
- 2026-06-23
Smart Images
Figure CN122270352A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to equipment and methods for reversibly rolling rolled products made of metal, particularly for hot rolling rolled products made of aluminum or aluminum alloys. Background Technology
[0002] In hot rolling of aluminum, ingots (also called "Ingots") made of aluminum or aluminum alloys are placed at a temperature suitable for rough rolling, such as about 400 to 600°C, and then placed onto a roller conveyor, for example, via an ingot tilter or the like, which transports the ingots to a roughing mill with one or more rolling stands. The roughing mill typically reversibly rolls the ingots to the desired thickness in multiple passes. One or more cut-off shears are installed at defined intervals from the roughing mill stands to trim the inferior ends of the strip produced during rolling and as a result of rolling.
[0003] This type of hot rolling mill for aluminum is derived, for example, from WO2005 / 049241A1.
[0004] By performing reversible rolling in the roughing mill, the ingot or strip corresponds to a length that increases with each pass as it thins. The roller tables before and after the roughing mill must be designed to be correspondingly long to accommodate the entire product until the final dimensions produced by the roughing mill are reached. When the next rolled product is delivered, the roughing mill of the facility experiences a corresponding rolling pause, depending on the design of the roller tables, ingot delivery devices, and ingot transport. Delivering the next ingot onto the roller tables during the previous ingot / strip rolling process is not easily feasible because the corresponding roller tables are occupied for reversible transport during rolling.
[0005] Time savings can be achieved by ensuring a relatively large distance between the ingot tilter or similar delivery device and the roughing mill, and by ensuring that the previous strip does not remain below the ingot tilter during the final reversible process (direction switch) on the roller table. This allows the next ingot to be placed onto the roller table before the final direction switch on the corresponding roller table, and to proceed in parallel with the previous strip roughing process.
[0006] Here, the rolling pause between two rolled products depends on the length of the strip during its last reversible movement on the corresponding roller table, the velocity trajectory of the strip returning to the roughing mill, and the velocity trajectory of the next ingot being transported to the roughing mill. With these kinematic boundary conditions, the necessary rolling pause between two rolled products can be highly individualized, yet it typically exceeds approximately 50 seconds of roughing mill pause time. Summary of the Invention
[0007] The object of the present invention is to provide improved equipment and improved methods for reversibly rolling rolled products made of metal, preferably for hot rolling rolled products made of aluminum or aluminum alloys, and particularly for improving productivity.
[0008] This objective is achieved by an apparatus having the features of claim 1 and a method having the features of the parallel method claims. Advantageous improvements are derived from the dependent claims, the following description of the invention, and the description of preferred embodiments.
[0009] The equipment is used for reversible rolling of rolled products made of metal, preferably aluminum or aluminum alloys. Specifically, the equipment functions as a hot rolling mill for hot rolling of rolled products, for example at approximately 350 to 600°C.
[0010] The equipment has roller conveyors designed to transport rolled products along a conveyor line. The rolled products are typically delivered in the form of ingots onto the roller conveyor at a delivery location, for example by means of a crane and / or ingot tilter or the like, and are subsequently transported along the conveyor line in the main transport direction via the roller conveyor.
[0011] The equipment also includes a roughing mill unit comprising at least one roughing stand and designed for reversible rolling of the rolled product. During reversible rolling, the rolled product defines or occupies a reversible region of the roller table. This refers to the area on the roller table that must be provided or maintained free for the rolled product so that it can be moved back and forth accordingly within the roughing mill unit in a progressively longer pass. As the thickness induced by rolling in the roughing mill unit decreases, the rolled product becomes proportionally longer. Accordingly, the reversible region of the roller table lengthens after each pass.
[0012] The roughing mill stand of the roughing mill unit is preferably a four-high design, each having two work rolls and two support rolls forming the rolling gap. Preferably, the roughing mill unit includes a maximum of two rolling stands. In reversible operation, after each process step through one or more stands of the roughing mill unit, the rotation direction of the rolls is reversed, and the rolled product is moved back through the roughing mill unit in the opposite direction. In this way, rolling in the roughing mill unit comprises multiple process steps with corresponding reduction or reversible processes before the rolled product is (roughly) rolled to the desired thickness and can be conveyed along the conveyor line in the main transport direction to further processes. Here, the relevant process steps are summarized as the so-called rolling and / or process stages.
[0013] According to the invention, the equipment has a transfer device arranged within a reversible region, preferably upstream of the roughing mill, i.e., upstream of the roughing mill when viewed in the main transport direction. The transfer device is designed to transfer rolled products from the roller table to a waiting area and back. The area of operation of the transfer device within the reversible region is hereinafter referred to as the transfer region.
[0014] The process flow is controlled and / or regulated by a control device that is in communication with the roller table, roughing mill, and transfer device. The control device is designed to transport a second rolled product via the roller table to the transfer device during the reversible rolling process of the first rolled product, and then transfer it from the roller table to a waiting area by means of the transfer device, such that the reversible area of the roller table is idle for the next pass of the first rolled product in the rolling process.
[0015] In this way, by making better use of the roller conveyor, the rolling pause between two rolled products in the roughing mill can be shortened. Therefore, the transfer device and waiting area, through proper operation of the equipment, allow for increased output. When supplying subsequent rolled products, the necessary kinematically determined rolling pause between two rolled products can theoretically be reduced to a maximum of 5 seconds using the aforementioned equipment. Considering realistic process conditions, rolling pauses of 30 seconds or less, preferably 20 seconds or less, and extremely preferably 15 seconds or less, can be achieved. In extreme cases (e.g., during modernization of unfavorable ingot input areas), this translates to a saving of up to 120 seconds per rolled product.
[0016] Here, the waiting area can be constructed to be relatively short because at the point in time when the transfer device is used, the rolled product has not yet been extended, or has only been extended very little, due to process reasons, by the corresponding reduction in thickness during rolling in the roughing mill.
[0017] Existing facilities can be easily retrofitted by installing transfer units and waiting areas. Here, the size of the facility increases only slightly. Retrofitting is often sufficient without extending the facility. Therefore, mechanical engineering contributions to improve productivity are made in a particularly space-efficient manner.
[0018] As described above, the control device is designed to transport the second rolled product via a roller table to a transfer device during the reversible rolling process of the first rolled product, and then transfer it from the roller table to a waiting area by means of the transfer device. Here, the "rolling process" of the rolled product X includes the time span from the beginning of the first pass of the roughing mill to the end of the last pass, and includes at least one rolling stage. Between passes and rolling stages, other tasks can occur if necessary, such as trimming the rolled product X. In other words, the transport and / or transfer of the second rolled product can, but does not necessarily have to, occur simultaneously with the execution of the rolling stage of the first rolled product, but only simultaneously with the rolling process as defined herein.
[0019] Communication between the control device and the facility components to be controlled, adjusted, and / or read can be wired or wireless, digital or analog. The control device can accordingly receive and / or transmit signals (control signals, data, etc.), where both unidirectional and bidirectional signal transmission fall under the concept of "communication" in this context. Here, the control device does not necessarily have to be implemented through a central computing device or electronic control unit, but includes distributed and / or multi-level systems, control networks, cloud systems, and the like. Furthermore, the control device can be an integral part of or communicate with a higher-level facility control unit. The control device can also communicate with lower-level facility control units (i.e., control units associated with the corresponding devices).
[0020] Preferably, the control device is designed to transfer the second rolled product back onto the roller table and reversibly roll it through the roughing mill stand after the first rolled product has passed through the transfer area for the last time, i.e., after the first rolled product has last utilized the corresponding roller table or reversible area. In this way, the second rolled product is pre-positioned during the rolling process of the first rolled product and can subsequently be rolled through the roughing mill stand without significant production interruption.
[0021] Preferably, the transfer device is designed to move the rolled product, which is resting in the waiting area, from the roller table as quickly as possible (e.g., at a speed of about 400 mm / s), and to move it back onto the roller table at a later point in time, particularly by lifting or lowering. When placing the ingot onto the roller table, the transfer speed can be significantly reduced shortly before placement to avoid potential surface damage to the rolled product via the transfer device, for example, during the final 50 mm until the rolled product contacts the roller table rolls.
[0022] Preferably, the control device is designed to transfer the second rolled product to a waiting area by means of a transfer device before it passes through the roughing mill stand in its first pass (i.e., reduction in thickness). In other words, in this case, the second rolled product is placed in the waiting area in an unprocessed form, particularly as a slab or ingot. Therefore, the transfer device and the waiting area can be constructed in a particularly compact manner.
[0023] Alternatively, the control device can be designed to subject the second rolled product to at least one pass, preferably two or more passes (“multi-slab rolling”) through the roughing mill before it is transferred from the roller table to the waiting area via a transfer device. Such roughing of the second rolled product before its transfer to the waiting area is particularly meaningful if the first rolled product undergoes further processing during the rolling process (i.e., prior to the reversible process). This processing includes, for example, trimming the strip ends according to a preferred embodiment.
[0024] For this purpose, the equipment preferably has at least one end trimmer, which is mounted at a defined location in the roughing mill and designed to trim the ends of the rolled product. The end trimmer's task is to remove the inferior ends of the rolled product produced during rolling.
[0025] Preferably, the second rolled product undergoes at least one pass through the roughing mill, preferably two or more passes, before being transferred to the waiting area, while the first rolled product is cut off by at least one cutter. In this way, the cut off of the first rolled product can be used in conjunction to initiate the rolling process of the second rolled product.
[0026] Preferably, the transfer device includes lifting equipment (e.g., crane, lifting beam, etc.) and / or a rotating tower device and / or a rotating roller conveyor and / or a translation device (i.e., parallel ferry, pivot ferry, pusher, etc.) and / or a tilting device. Particularly preferably, the transfer device is configured as a lifting device that lifts the rolled product upward from the roller conveyor. By means of the rotating roller conveyor, the ingot can be rotated horizontally by 90° from the transport direction and subsequently transported out of the reversible region. By means of the translation device, the ingot is transported to a position parallel to the main transport direction. In the case of the tilting device, the ingot is pivotally rotated out of the reversible region by, for example, a pivoting motion of 45-180°. By means of the rotating tower device, the ingot can be brought to a position parallel to the main roller conveyor by the rotation of the rotating tower.
[0027] Preferably, a temperature regulating device is installed in the waiting area, the device being designed to actively or passively regulate the temperature of the rolled product parked there. In its simplest form, the temperature regulating device is constructed as an isolation hood to suppress or at least reduce cooling caused by the waiting time of the rolled product awaiting hot rolling.
[0028] However, under certain circumstances, any temperature loss of the rolled product in the waiting area is acceptable, and in some cases even desirable, such as when a low target temperature is run in any finishing mill to further increase productivity.
[0029] It can utilize the waiting time to perform temperature measurements, so as to optimize the control of subsequent rolling processes with accurate measurement data.
[0030] The aforementioned objective is also achieved by a method for reversibly rolling rolled products made of metal, particularly for hot rolling rolled products made of aluminum or aluminum alloys. The method comprises: transporting a first rolled product to a roughing mill via a roller table; reversibly rolling the first rolled product through one or more roughing stands of the roughing mill, wherein the first rolled product defines or occupies a reversible region of the roller table during the reversible rolling; transporting a second rolled product to a transfer device via the roller table during the rolling process of the first rolled product through the roughing mill, the transfer device being located in the reversible region of the first rolled product and defining a transfer region; and transferring the second rolled product, which is in the transfer region, from the roller table to a waiting region by means of the transfer device during the rolling process of the first rolled product through the roughing mill, such that the reversible region of the roller table is idle for the next reversible process of the first rolled product in the rolling process.
[0031] The technical effects, advantages, and implementation methods described for the equipment are similarly applicable to the method.
[0032] Therefore, for the reasons mentioned above, it is preferable to transfer the second rolled product back onto the roller table by means of a transfer device after the first rolled product has passed through the transfer area for the last time, and then perform reversible rolling through the roughing mill.
[0033] Once the second rolled product is transported back onto the roller conveyor from the waiting position and released from the transfer area, another (third) rolled product can be transported towards the transfer area. For simplicity, further numbering is omitted. It goes without saying that the logical sequence of the first and second rolled products continues sequentially.
[0034] Preferably, for the reasons mentioned above, the second rolled product is transferred to the waiting area by means of a transfer device before passing through its own first pass on the roughing mill stand.
[0035] Preferably, for the reasons stated above, the second rolled product undergoes at least one pass through the roughing mill before being transferred from the roller table to the waiting area via the transfer device.
[0036] Preferably, for the reasons stated above, the second rolled product undergoes at least one pass through the roughing mill before being transferred to the waiting area, while the first rolled product is cut off by means of at least one head cutter.
[0037] Preferably, for the reasons mentioned above, the temperature of the rolled products placed in the waiting area is regulated by means of a temperature regulating device.
[0038] Other advantages and features of the present invention will become apparent from the following description of preferred embodiments. The described features can be implemented individually or in combination with one or more of the above features, provided that these features do not contradict each other. Hereinafter, the description of preferred embodiments is given with reference to the accompanying drawings. Attached Figure Description
[0039] Other preferred embodiments of the invention will be explained in more detail below with reference to the accompanying drawings. As shown herein:
[0040] Figures 1a to 1e The apparatus for reversibly rolling a rolled product made of metal is illustrated schematically at different stages of a process according to one embodiment.
[0041] Figures 2a to 2d The diagram schematically illustrates an apparatus for reversibly rolling a rolled product made of metal at different stages of a process, according to another embodiment; and
[0042] Figures 3a to 3c An apparatus for performing reversible rolling is schematically shown according to other embodiments. Detailed Implementation
[0043] Preferred embodiments are described below with reference to the accompanying drawings. Here, identical, similar, or equivalent elements are given the same reference numerals, and repeated descriptions of these elements are omitted in part to avoid redundancy.
[0044] Figures 1a to 1e The apparatus 1 for reversibly rolling rolled products 100 and 110 made of metal at different stages of a process, according to one embodiment, is schematically shown.
[0045] Equipment 1 specifically serves as a hot rolling mill for hot rolling (especially rough rolling) of rolled products 100, 110, preferably made of aluminum or aluminum alloy.
[0046] The equipment 1 has a roller conveyor 10 designed for transporting rolled products 100 and 110 along a conveyor line F. The roller conveyor 10 includes a plurality of rollers, which are at least partially actively actuated to transport the rolled products 100 and 110 along the conveyor line F.
[0047] Rolled products 100 and 110 are delivered in the form of ingots at delivery location A onto roller conveyor 10, for example by means of a crane and / or ingot tilter, and are subsequently transported along conveyor line F in the main transport direction via roller conveyor 10.
[0048] The equipment 1 also includes a roughing mill 20 designed to perform reversible rolling of rolled products 100 and 110, whereby the thickness of the rolled products 100 and 110 gradually decreases while their length increases, so that the rolled products 100 and 110 are rolled from an ingot shape into metal strips. The roughing mill 20 is illustrated in the figures as a single-stand roughing mill, although a multi-stand roughing mill can alternatively be used.
[0049] The roughing mill stand of the roughing mill unit 20 is preferably provided as a four-roll embodiment, having two work rolls 21 and two support rolls 22 that form the rolling gap.
[0050] In reversible operation, after each process step in which the rolled products 100, 110 pass through one and / or more stands in the roughing mill 20, the rotation direction of the rolls 21, 22 is reversed, and the rolled products 100, 110 are moved again through the roughing mill 20 in the opposite direction. In this way, rolling in the roughing mill 20 comprises multiple process steps before the rolled products 100, 110 are rolled to the desired thickness and can be conveyed along the conveyor line F in the main transport direction to further processes.
[0051] The roller tables 10 before and after the roughing mill must be designed to be of appropriate length to accommodate the entire rolled product 100, 110 up to the dimensions produced by the roughing mill 20. Therefore, during reversible rolling, the rolled products 100, 110 occupy the reversible region Rb of the roller table 10, which is particularly relevant here to the reversible region Rb between the ingot delivery area A and the roughing mill stand 20. The roller table after the last stand of the roughing mill 20 can also belong to the reversible region Rb.
[0052] The equipment 1 also includes a transfer device 30, which, viewed in the main transport direction, is arranged immediately in front of and / or behind the roughing mill stand 20, or at least within a reversible region Rb in front of and / or behind the roughing mill stand. This transfer device is designed to move rolled products 100, 110 from the roller table 10 to the waiting area 40 and then back onto the roller table 10 at a given time. The transfer device 30 is installed, for example, at a distance of 50 m from the roughing mill stand of the roughing mill unit 20. The area of action of the transfer device 30 within the reversible region Rb is also referred to herein as the transfer region Tb. Because the transfer device 30 is positioned within the reversible region Rb, it is necessary to avoid two rolled products 100, 110 simultaneously remaining within the transfer region Tb, but rather to allow the two rolled products 100, 110 to be located at different positions within the reversible region Rb.
[0053] In this embodiment, the transfer device 30 is designed to move the rolled products 100 and 110 to the waiting area 40 and then back before the first pass. In other words, compared with... Figures 2a to 2d In a different subsequent implementation, the rolled products 100 and 110 are placed in the waiting area 40 as unprocessed slabs.
[0054] In this way, by making better use of the roller table 10, the rolling pause of the roughing mill stand 20 between the two rolled products 100, 110 can be shortened.
[0055] This is achieved as follows: while the first rolled product 100 is passing through the main transport direction, the subsequent second rolled product 110 is transported via the roller conveyor 10 to the transfer device 30. The subsequent second rolled product 110 follows the first rolled product 100 in the rolling process and is then transferred by the transfer device 30 to the waiting area 40, so that the roller conveyor 10 is idle for the next pass of the first rolled product 100 in the rolling process. After the first rolled product 100 leaves the transfer area Tb for the last time, the second rolled product 110 can be returned from the waiting area 40 to the roller conveyor 10 via the transfer device 30 and undergo reversible rolling through the roughing mill 20.
[0056] The rolling and positioning process according to this embodiment is detailed as follows:
[0057] Figure 1a The process phase is shown, in which the first rolled product 100 is reversibly rolled by the roughing mill 20, wherein the current pass is performed in the opposite direction to the main transport direction. Simultaneously, the second rolled product 110 in ingot form is placed at the delivery position A onto the roller table 10.
[0058] exist Figure 1bAt a certain point in time, the rolling direction of the first rolled product 100 is reversed, and the first rolled product 100 passes through the roughing mill 20 in the main transport direction, while simultaneously the second rolled product 110 (i.e., the subsequent rolled product 110) is transported to the transfer device 30 via the roller conveyor 10 in the main transport direction. Therefore, the second rolled product 110 immediately follows the first rolled product 100, which is undergoing rolling, on the roller conveyor 10.
[0059] Figure 1c The following process stages are illustrated, where the second rolled product 110 has arrived at the transfer device 30, while the first rolled product 100 has passed through the current pass or at least nearly passed through it. The second rolled product 110 is now moved by the transfer device 30 from the roller table 10 to the waiting area 40. The first and second rolled products 100 and 110 are simultaneously located in the reversible region Rb on the roller table 10, where only the second rolled product remains in the transfer region Tb to be transferred to the waiting area 40.
[0060] exist Figure 1d At this point in time, the second rolled product 110 has been transferred by the transfer device 30 to the waiting area 40. The roller conveyor 10 is now available for one or more additional passes of the first rolled product 100.
[0061] After the final rolling stage of the first rolled product 100 at the corresponding roughing stand in the roughing mill unit 20 is completed, the second rolled product 110, pre-positioned in the waiting area 40, is returned to the roller table 10 by means of the transfer device 30. See [reference needed] Figure 1e And it can now be reversibly rolled by the roughing mill 20 in a conventional manner.
[0062] The transfer device 30 can be configured as a lifting device that lifts the rolled product 110 upward (or downward) from the roller table 10. Alternatively, the rolled product 110 can be laterally removed from the roller table 10 via the transfer device 30. The transfer device 30 can have a lifting device, a rotating tower device, a rotating roller table, a translation device, a tilting device, or an alternative mechanism, designed to remove the rolled product 110 from the roller table 10 such that the roller table can be used for reversible rolling of the previously rolled product 100.
[0063] For example, the rolled product 110 can be lifted by the transfer device 30 to a position approximately 1.5 m above the upper edge of the roller table. The pre-positioning of the rolled product 110 in the waiting area 40 can be performed, for example, 300 mm above the upper edge of the roller table, while the previous first rolled product 100 in the rolling process is transported below the parked second rolled product 110.
[0064] Preferably, the transfer device 30 is designed to move the rolled product 110, which is parked in the waiting area 40, from the roller conveyor 10 as quickly as possible (e.g., at a speed of about 400 mm / s), and to move it back onto the roller conveyor 10 at a later point in time, particularly by lifting or lowering it. When placing the ingot onto the roller conveyor 10, the transfer speed can be significantly reduced shortly before placement to avoid potential surface damage to the rolled product 110 by the transfer device 30. For example, during the final 50 mm, until the rolled product 110 contacts the roller conveyor rolls. Subsequently, the roller conveyor 10 can be released again before the transfer device 30 or its lifting platform is in an end position (e.g., about 10 mm below the upper edge of the roller conveyor rolls). The end position of the lifting platform can be located 40 mm or more below the upper edge of the roller conveyor rolls.
[0065] Preferably, a temperature regulating device 41 is installed in the waiting area 40, which actively or passively regulates the temperature of the rolled product 110 placed there. In the simplest case, the temperature regulating device 41 is configured as an isolation hood to suppress or at least reduce the cooling of the rolled product 110 to be hot-rolled.
[0066] Figures 2a to 2d Another embodiment is shown, wherein the second rolled product 110, to be placed in waiting area 40, undergoes at least one pass through roughing mill 20, here two passes, before being transferred from roller table 10. This is feasible or meaningful if the previous first rolled product 100 undergoes further processing between the two passes (which, according to this embodiment, includes trimming the strip ends). Therefore, unlike the previous embodiment, the second rolled product 110 is not placed in waiting area 40 in the form of an ingot (i.e., before the first rolling stage), but rather the second rolled product 110 has previously undergone one or more presses through roughing mill stand 20.
[0067] In addition to the roller conveyor 10, roughing mill stand 20, transfer device 30, and waiting area 40, the device 1 according to this embodiment also includes at least one head cutter 50, which is installed at a defined distance from the roughing mill stand 20, and is located at the rear (i.e., downstream of the roughing mill stand 20) when viewed in the main transport direction. The head cutter 50 is tasked with removing the inferior ends of the rolled products 100 and 110 produced during rolling.
[0068] According to this embodiment, the rolling and positioning process is detailed as follows:
[0069] Figure 2aThe following process stages are illustrated, in which a first rolled product 100 is rolled by a roughing mill 20, wherein the current rolling stage has ended, and viewed in the main transport direction, the first rolled product 100 is located behind the roughing mill 20. Simultaneously, a second rolled product 110 is placed on the roller conveyor 10 at delivery position A, or has already been transported to the roughing mill in the main transport direction.
[0070] Subsequently, the end of the first rolled product 100 is cut off by the head cutter 50, while the subsequent second rolled product 110 is (continued) transported in the main transport direction to the roughing mill stand 20, where it undergoes the first rolling pass through the roughing mill unit 20. Therefore, the second rolled product 110 first passes through the transfer device 30, while the ingot is not removed from the roller table 10. Figure 2b At the point in time, when viewed from the main transport direction, both the first rolled product 100 and the second rolled product 110 are located behind the corresponding roughing mill stand of the roughing mill unit 20, that is, downstream of it.
[0071] Subsequently, the rolling direction of the second rolled product 110 is reversed, and the second rolled product 110 passes through the roughing mill 20 in the opposite direction to the main transport direction. Thus, the second rolled product can undergo further pressing through the roughing mill stand 20, while the process of cutting the first rolled product 100 by the head cutter 50 continues.
[0072] exist Figure 2c At this point in time, the second rolled product 110, which has now undergone at least one, preferably two or more, pressings, is located at the transfer unit 30. The cutting of the first rolled product 100 is completed, and the first rolled product can now be conveyed in the opposite direction of the main transport to further passes of the roughing mill 20.
[0073] Meanwhile, the second rolled product 110 is moved from the roller conveyor 10 to the waiting area 40 by the transfer device 30.
[0074] exist Figure 2d At this point in time, the second rolled product 110 has been transferred by the transfer device 30 to the waiting area 40. The roller conveyor 10 is now available for the final rolling stage of the leading first rolled product 100, which has at least one, preferably two or more, pressings.
[0075] After the first rolled product 100 leaves the transfer area Tb, the second rolled product 110, which is parked in the waiting area 40, is placed back onto the roller table 10 by means of the transfer device 30, and can now be rolled normally through the roughing mill 20.
[0076] The transfer device 30 and waiting area 40 described herein, with proper control of the equipment 1, allow for increased productivity by saving time when providing subsequent rolled products 110 at the roughing mill 20.
[0077] Here, the waiting area 40 need not be constructed to be particularly long, because at the point in time when the transfer device 30 is used, the rolled product 110 has not yet been extended, or has only been extended very little, due to process reasons, by the corresponding reduction in thickness during rolling in the roughing mill 20.
[0078] Existing facilities can be easily modified by installing transfer devices 30 and waiting areas 40 (with temperature control devices 41 if necessary). Here, the size of the facility increases only slightly. Modifications typically do not require lengthening the facility. Therefore, the contribution of mechanical manufacturing to improving productivity is achieved in a particularly space-saving manner.
[0079] Any temperature loss in waiting area 40 for rolled products 100 and 110 is acceptable in most cases and even desirable in some cases, such as when a lower target temperature is run in the finishing mill (not shown in the figure) to further increase productivity.
[0080] To control and / or regulate the aforementioned pre-positioned rolling process, a control device 200 is provided, which is in communication with various components 10 to 50, actuators, sensors, and the like. The control device 200 is connected to the signals of the components of the equipment 1 to be controlled, regulated, and / or read, and therefore particularly to the roller conveyor 10, the roughing mill 20, the transfer device 30, the temperature control device 41 of the waiting area 40 (if necessary), and the head cutter 50.
[0081] Communication between the control device 200 and the facility components to be controlled, adjusted, and / or read can be wired or wireless, digital or analog. The control device 200 can accordingly receive and / or transmit signals (control signals, data, etc.), where both unidirectional and bidirectional signal transmission fall under the concept of "communication" in this context. Here, the control device 200 does not necessarily have to be implemented through a central computing device or electronic control unit, but includes distributed and / or multi-level systems, control networks, cloud systems, and the like. Furthermore, the control device 200 can be an integral part of or communicate with a higher-level facility control unit. The control device 200 can also communicate with lower-level facility control units (i.e., control units associated with the corresponding devices).
[0082] Figure 3a , Figure 3b and Figure 3c Other embodiments of the apparatus 1 for reversibly rolling rolled products are schematically shown, wherein the level of detail is reduced for clarity.
[0083] Figure 3a Device 1 basically corresponds to Figures 1a to 1e One embodiment has a delivery device or delivery position A and a transfer device 30 arranged on one side of the roughing mill 20, and a head cutter 50 arranged on the other side of the roughing mill 20. After roughing, the first rolled product that has completed roughing is output from the area of the roughing mill 20 in the outgoing direction Fa.
[0084] Figure 3b The equipment 1 has the following arrangement, wherein a head cutter 50 is arranged on each side of the roughing mill 20. The delivery position A can be selectively located in the area between one of the head cutters 50 and the roughing mill 20, or arranged externally. Logically optimally, the transfer device 30 is arranged between the delivery position A or the first head cutter 50 and the roughing mill 20.
[0085] according to Figure 3b The arrangement allows for the selective transport of the first rolled product, which has completed rough rolling, in the direction of Fa, either according to the first arrow (left arrow) or the second arrow (right arrow). Typically, heavy rough-rolled products, which are processed into thin or thick plates, are transported in one direction, while other products, which are further rolled into thinner materials, are transported in the other direction and output there.
[0086] Arranging the transfer device 30 on the side of the roughing mill 20 opposite to the delivery position A is technically feasible, but it results in a slightly longer waiting time. However, within a modern framework, for example, choosing this alternative arrangement of the transfer device 30 can be perfectly meaningful.
[0087] according to Figure 3c The equipment 1 has an arrangement of two spaced-apart reversible stands with a roughing mill 20. Delivery position A is preferably located between the spaced-apart reversible stands of the roughing mill 20. Due to the spacing between the two rolling stands of the roughing mill 20, it is meaningful to assign a transfer device 30 to each stand in order to minimize the waiting time for each stand. The arrangement of the head cutters 50 allows for the selective transport of the first product in two outgoing directions, as indicated by the corresponding arrows.
[0088] It should be noted that the names of spatial relationships, such as “between,” “vertical,” “horizontal,” “above,” “below,” “upstream,” “downstream,” “front,” “rear,” etc., are clearly determined by the structure and intended use of equipment 1 and the main transport direction of rolled products 100 and 110.
[0089] Wherever available, all individual features shown in the embodiments may be combined and / or substituted with each other without departing from the scope of the invention. List of reference numerals 1. Equipment for reversible rolling of rolled products 10 roller conveyors 20 Roughing Mill Unit 21 working rolls 22 Support Rollers 30 Transfer device Waiting area 40 41 Temperature control device 50 head cutters 100 First rolled product 110 Second Rolled Product 200 control device F Conveyor Line A Delivery Location Rb reversible region Tb transfer area Fa outbound direction
Claims
1. An apparatus (1) for reversibly rolling rolled products (100, 110) made of metal, particularly for rolling rolled products (100, 110) made of aluminum or aluminum alloy, wherein, The device (1) has: Roller conveyor (10), which is designed to transport the rolled products (100, 110) along the conveyor line (F). A roughing mill (20) is designed to perform reversible rolling on the rolled products (100, 110), wherein the rolled products (100, 110) define a reversible region (Rb) of the roller table (10) during the reversible rolling. A transfer device (30), arranged within the reversible region (Rb) and designed to transfer rolled products (100, 110) in the transfer region (Tb) from the roller conveyor (10) to the waiting region (40) and back; and A control device (200), which is in communication with the roller table (10), the roughing mill (20), and the transfer device (30) and is designed to control and / or regulate the reversible rolling process of the rolled products (100, 110) through the roughing mill (20); wherein The control device (100) is also designed to transport a second rolled product (110) to the transfer device (30) via the roller table (10) during the reversible rolling process of the first rolled product (100), and to transfer it from the roller table (10) to the waiting area (40) by means of the transfer device (30), such that the reversible area (Rb) of the roller table (10) is idle for the next rolling stage of the first rolled product (100) in the rolling process.
2. The device (1) according to claim 1, characterized in that, The control device (200) is designed to transfer the second rolled product (110) back onto the roller table (10) and reversibly roll it through the roughing mill (20) by means of the transfer device (30) after the first rolled product (100) has passed through the transfer area (Tb) for the last time.
3. The device (1) according to claim 1 or 2, characterized in that, The control device (200) is designed to transfer the second rolled product (110) to the waiting area (40) by means of the transfer device (30) before passing through the first pass of the roughing mill (20).
4. The device (1) according to claim 1 or 2, characterized in that, The control device (200) is designed to cause the second rolled product (110) to undergo at least one pass, preferably two or more passes, through the roughing mill (20) before being transferred from the roller table (10) to the waiting area (40) via the transfer device (30).
5. The device (1) according to any one of the preceding claims, characterized in that, The device (1) has at least one head cutter (50) which is installed at a defined location in the roughing mill (20) and is designed to trim the rolled product, in particular its ends (100, 110).
6. The device (1) according to claims 4 and 5, characterized in that, The control device (200) is designed to cause the second rolled product (110) to undergo at least one pass through the roughing mill (20) before being transferred to the waiting area (40), while the first rolled product (100) is cut off by means of at least one head cutter (50).
7. The device (1) according to any one of the preceding claims, characterized in that, The transfer device (30) includes lifting equipment and / or rotating tower equipment and / or rotating roller conveyor and / or translation equipment and / or tilting equipment.
8. The device (1) according to any one of the preceding claims, characterized in that, A temperature regulating device (41) is installed in the waiting area (40), the temperature regulating device being designed to actively or passively regulate the temperature of the rolled product (110) parked there, wherein the temperature regulating device (41) preferably includes an isolation cover.
9. A method for reversibly rolling rolled products (100, 110) made of metal, said method particularly for rolling rolled products (100, 110) made of aluminum or aluminum alloy, wherein, The method has the following characteristics: The first rolled product (100) is transported to the roughing mill (20) via the roller conveyor (10); The first rolled product (100) is reversibly rolled by the roughing mill (20), wherein the first rolled product (100) defines a reversible region (Rb) of the roller table (10) during the reversible rolling. During the rolling process of the first rolled product (100) through the roughing mill (20), the second rolled product (110) is transported via the roller table (10) to a transfer device (30) located in the reversible region (Rb) of the first rolled product (100); and During the rolling process of the first rolled product (100) through the roughing mill (20), the second rolled product (110) in the transfer area (Tb) is transferred from the roller table (10) to the waiting area (40) by means of the transfer device (30), so that the reversible area (Rb) of the roller table (10) is idle for the next rolling stage of the first rolled product (100) in the rolling process.
10. The method according to claim 9, characterized in that, After the first rolled product (100) passes through the transfer area (Tb) for the last time, the second rolled product (110) is transferred back to the roller table (10) by means of the transfer device (30) and then reversibly rolled by the roughing mill (20).
11. The method according to claim 9 or 10, characterized in that, The second rolled product (110) is transferred to the waiting area (40) by means of the transfer device (30) before passing through the first pass of the roughing mill (20).
12. The method according to claim 9 or 10, characterized in that, The second rolled product (110) is subjected to at least one pass, preferably two or more passes, through the roughing mill (20) before being transferred from the roller table (10) to the waiting area (40) via the transfer device (30).
13. The method according to claim 12, characterized in that, The second rolled product (110) is subjected to at least one pressure by the roughing mill (20) before being transferred to the waiting area (40), while the first rolled product (100) is cut off by means of at least one head cutter (50).
14. The method according to any one of claims 9 to 13, characterized in that, The rolled product (110) placed in the waiting area (40) is subjected to temperature regulation by means of a temperature regulating device (41).
15. The method according to any one of claims 9 to 14, characterized in that, The rolled products (100, 110) are hot rolled, preferably at about 350 to 600°C.