Hot-rolling device, method for hot rolling and system for producing and / or processing a metal product

Abstract

The invention relates to a hot-rolling device for hot rolling a metal rolled product conveyed along a conveying path in a conveying direction, comprising: - a hot-rolling line for hot rolling the metal rolled product with at least three hot-rolling stands, wherein - the hot-rolling line has a machining or hot-rolling width of greater than or equal to 2,200 mm for machining the material strip, preferably of greater than or equal to 2,300 mm and particularly preferably of greater than or equal to 2,400 mm.

Description

[0001] Hot rolling device and method for hot rolling as well as plant for producing and / or processing a metallic product

[0002] The invention relates to a hot rolling apparatus for hot rolling a metallic rolling stock conveyed along a conveying path in the conveying direction.

[0003] The invention further relates to a plant for producing and / or processing a metallic rolled stock, in particular a semi-finished product and / or a preliminary product and / or an intermediate product and / or a product made of iron, steel and / or a non-ferrous metal material.

[0004] The invention further relates to a method for hot rolling a metallic rolling stock conveyed along a conveying path in the conveying direction.

[0005] In particular, hot rolling devices of this type are known from the prior art.

[0006] The invention is based on the object of providing an improvement or an alternative to the prior art.

[0007] The object of the invention is achieved by a hot rolling device for hot rolling a metallic rolling stock conveyed along a conveying path in the conveying direction, comprising: • a hot rolling train for hot rolling the metallic rolling stock with at least three hot rolling stands, wherein

[0008] • the hot rolling mill has a processing or hot rolling width of greater than or equal to 2,200 mm for processing the material strip, preferably greater than or equal to 2,300 mm and particularly preferably greater than or equal to 2,400 mm.

[0009] Due to the design of the hot rolling device proposed here with at least three hot rolling stands forming a hot rolling mill and with the proposed processing or rolling width of the hot rolling mill of 2,200 mm or more, correspondingly wide metallic rolled goods can be processed and / or produced and / or hot rolled quickly and particularly cost-effectively.

[0010] Optionally, the hot rolling mill has a processing or hot rolling width of greater than or equal to 2,100 mm for processing the material strip, preferably greater than or equal to 2,500 mm and particularly preferably greater than or equal to 2,600 mm.

[0011] Preferably, the hot rolling mill has a processing or hot rolling width of greater than or equal to 2,450 mm for processing the material strip, preferably greater than or equal to 2,550 mm and particularly preferably greater than or equal to 2,800 mm and further preferably greater than or equal to 3,000 mm.

[0012] The hot rolling mill can advantageously have four, five, six, seven, or more rolling stands. Each hot rolling stand can have a separate pair of work rolls for processing the metallic rolled stock.

[0013] Correspondingly wide metallic rolled goods could previously be produced using a heavy plate mill, whereby such heavy plate mills have a high energy consumption and a lower discharge capacity compared to hot strip mills known from the state of the art, particularly due to the reversing rolling.

[0014] Alternatively, similarly wide metallic rolled goods can be produced using state-of-the-art Steckel rolling mills. Steckel rolling mills operate in a reversing motion and are associated with considerable complexity in both equipment and process technology.

[0015] This is due, among other things, to the fact that coiling devices, usually equipped with a heating device, are located directly upstream and downstream of the hot rolling stand or, in the case of a so-called twin Steckel rolling mill, the hot rolling stands. Steckel rolling mills have a lower output capacity than hot strip mills due to their at least partially reversible operation.

[0016] This is due, among other things, to the fact that only rolling stands that are suitable and equipped for reversing operation can be used.

[0017] All of these disadvantages can be avoided with the inventive rolling device. Thus, such wide metallic rolled goods can be produced particularly efficiently.

[0018] The hot-rolled metallic rolling stock with a finished width of over 2,200 mm or more can be provided in a particularly high-quality manner downstream of the last hot rolling stand if the at least three hot rolling stands of the hot rolling mill each comprise a finishing rolling stand.

[0019] In this respect, the present hot rolling apparatus can dispense with a roughing mill train with any roughing stands, which in turn can advantageously reduce the overall time required for rolling the metallic rolled stock. Alternatively, it can be provided that the hot rolling mill train with the at least three hot rolling stands, each of which can be designed as a finishing roll stand, is connected in material flow to a roughing mill train arranged upstream in the conveying direction and comprising at least one roughing stand, in particular two, three, four or more roughing stands, so that metallic rolled stock conveyed in the conveying direction can first be processed by the roughing mill train before being processed by the hot rolling mill train, in particular the hot rolling mill each comprising finishing stands.

[0020] A roughing stand can be configured for use in reversing operation, allowing the metallic rolling stock to be rolled in reverse. In other words, the metallic rolling stock can be rolled several times by a roughing stand before being transported to the hot rolling mill with hot rolling stands for further processing.

[0021] Preferably, several finishing rolling stands are arranged on the conveyor line, which can thus form a finishing rolling mill within the hot rolling mill.

[0022] Advantageously, the hot rolling device is configured with respect to the hot rolling train for unidirectional hot rolling of the metallic rolling stock, in particular for unidirectional finish rolling, in particular with respect to hot rolling stands configured as finish rolling stands, which are arranged directly one behind the other on the conveyor line.

[0023] The present hot rolling apparatus can operate even more effectively if the at least three hot rolling stands of the hot rolling mill each comprise a finishing rolling stand that operates exclusively unidirectionally. It is understood that this aspect also extends to embodiments with four, five, six, seven, or more hot rolling stands. The term "unidirectional" in the sense of the invention describes a movement of the metallic rolling stock along the conveyor line exclusively in the conveying direction (main conveying direction). Directional adjustments are possible as long as a movement component of the metallic rolling stock points in the conveying direction. The movement can decrease to zero, but cannot be directed counter to the conveying direction.

[0024] In other words, this means that for finish rolling of the metallic rolled stock, even with a strip width of over 2,200 mm, each pass takes place in the same direction, namely in the conveying direction of the conveyor line.

[0025] Unidirectional hot rolling can be implemented particularly easily if the metallic rolling stock can be hot rolled in the conveying direction, bypassing a reversible device in the area of ​​the hot rolling mill, in particular a reversible hot rolling stand.

[0026] In other words, the metallic rolling stock with a strip width of 2,200 mm or more is designed to be conveyed exclusively in the conveying direction through the hot rolling mill and to be hot rolled by means of at least three hot rolling stands.

[0027] In this respect, it is advantageous if, on the conveyor line, an installation space upstream and / or downstream of a hot rolling stand is free of a winding device for intermittent winding, intermediate storage, and / or heat treatment of the metallic rolled stock. In some embodiments comprising a hot rolling mill with at least one finishing stand and an upstream roughing mill, it may also be advantageous if the conveyor line between the roughing mill and the hot rolling mill has a non-heated winding device (coil box), which may be thermally insulated. In this context, regardless of the other features or combinations of features, a hot rolling device for hot rolling metallic rolled stock conveyed along a conveyor line in the conveying direction is also advantageous, which has a unidirectionally operating hot rolling mill for hot rolling the metallic rolled stock, which has a processing or hot rolling width of greater than or equal to 2.200 mm for processing the material strip, preferably greater than or equal to 2,300 mm and particularly preferably greater than or equal to 2,400 mm.

[0028] If the hot rolling mill operates exclusively with hot rolling stands which finish-roll the metallic rolling stock with a width of 2,200 mm or more exclusively in a single direction along the hot rolling mill, namely in the conveying direction of the hot rolling device, the prior art can also be further developed in the sense of the invention.

[0029] In this respect, unidirectional hot rolling mills have only one direction of passage.

[0030] Unidirectionally operating hot rolling stands roll the metallic rolling stock exclusively in a rolling direction which is directed away from a supply device for metallic rolling stock, in particular a casting device, i.e. in a rolling direction which points approximately away from the casting device.

[0031] In this respect, unidirectional hot rolling mills always transport or roll the metallic rolling stock away from the casting device and never towards it.

[0032] In this respect, it is advantageous if the metallic rolling stock is moved continuously unidirectionally from a hot side of the rolling device, which faces or is assigned to the first hot rolling stand arranged further upstream, to a cold side of the rolling device, wherein the cold side faces or is assigned to the last hot rolling stand arranged further downstream.

[0033] The hot side of the hot rolling device is located approximately in the area of ​​a furnace and / or the casting device, which and / or which causes the heat energy input to the metallic rolling stock.

[0034] The cold side of the hot rolling device is located approximately in the area of ​​a cooling device or a coiling device further downstream of the hot rolling mill.

[0035] A preferred embodiment provides that the hot rolling mill has three or more work roll pairs, preferably four, five, six, seven or more work roll pairs. In particular, each work roll pair can be arranged in a separate hot rolling stand.

[0036] In the sense of the invention, a work roll is the roll of the respective hot rolling stand which is designed for hot rolling of the metallic rolling stock and which interacts directly with this metallic rolling stock.

[0037] It goes without saying that a hot rolling mill may also be characterized by additional rolls, in particular backup rolls for supporting the backs of the work rolls during the hot rolling process. Furthermore, intermediate rolls may also be provided, which can be additionally arranged between the work rolls and the backup rolls, to name just a few possible hot rolling mill configurations.

[0038] A pair of work rolls forms the roll gap for receiving the metallic rolling stock to be rolled between the work rolls.

[0039] Depending on the design of the hot rolling mill, more than two working rolls may interact with the metallic rolling stock during a hot rolling process.

[0040] The hot rolling apparatus for hot rolling metallic rolled goods with a strip width of at least 2,200 mm or preferably more can be constructed in a particularly space-saving manner if the at least three hot rolling stands, in particular work roll pairs thereof, are arranged at a distance of less than or equal to 20 m from one another, preferably less than or equal to 10 m and particularly preferably less than or equal to 6 m. Furthermore, adjacent hot rolling stands can preferably be arranged at a distance of less than or equal to 8 m, preferably less than or equal to 5 m and particularly preferably less than or equal to 4 m.

[0041] Such small distances between the individual hot rolling stands can be easily achieved in the present case, since the present hot rolling device does not require any devices for intermittent winding of the metallic rolling stock, for example with regard to a reversing hot rolling process or the like.

[0042] In addition, by means of such small distances between the individual hot rolling stands, undesirable temperature losses, in particular with regard to radiant heat energy, in the metallic rolling stock can be significantly reduced, so that the rolling device can be operated even more efficiently in terms of energy.

[0043] In this context, it is advantageous if the at least three hot rolling stands, in particular working roll pairs thereof, are arranged at a distance of greater than or equal to 2 m from one another, preferably greater than or equal to 3 m and particularly preferably greater than or equal to 4 m.

[0044] Furthermore, by means of the present hot rolling apparatus, finish-rolled metallic rolled stock, which in the finish-rolled state can also be referred to as hot strip, can be provided with an advantageous strip thickness if at least one or more of the at least three hot rolling stands are set up for hot rolling a metallic rolled stock with a designated strip thickness of greater than or equal to 15 mm, preferably greater than or equal to 20 mm and particularly preferably greater than or equal to 25 mm. Furthermore, a rolling stand can advantageously be set up for a designated strip thickness of greater than or equal to 27 mm, preferably greater than or equal to 29 mm and particularly preferably greater than or equal to 31 mm.

[0045] The situation is similar if the at least one hot rolling stand is set up for hot rolling a metallic rolling stock with an entry thickness of the metallic rolling stock of less than or equal to 140 mm, preferably of less than or equal to 80 mm and particularly preferably of less than or equal to 65 mm.

[0046] The metallic rolling stock can be hot-rolled with a strip width of 2,200 mm or more advantageously on the hot rolling stands of the present hot rolling mill if the hot rolling mill has a roll gap with a height of less than or equal to 100 mm, preferably less than or equal to 90 mm or less than or equal to 80 mm and particularly preferably less than or equal to 60 mm or less than or equal to 50 mm with respect to the first hot rolling stand as seen in the conveying direction. The roll gap of the first hot rolling stand preferably has a height of less than or equal to 75 mm, furthermore preferably less than or equal to 70 mm, preferably less than or equal to 65 mm and particularly preferably less than or equal to 55 mm.

[0047] The situation is similar if the hot rolling mill, with respect to the first hot rolling stand in the conveying direction, has a roll gap with a height of greater than or equal to 15 mm, preferably greater than or equal to 30 mm, and particularly preferably greater than or equal to 35 mm. Furthermore, a variety of advantageous strip thicknesses can be achieved downstream of the hot rolling device if the roll gap of the first hot rolling stand has a height of greater than or equal to 20 mm, 25 mm, 27 mm, 32 mm or greater, for example greater than or equal to 37 mm or 40 mm.

[0048] It should be expressly noted that the roll gap specified here does not necessarily refer to a stand pitch of a rolling stand, but can be. The stand pitch refers to the maximum mechanically adjustable or achievable distance between the work rolls of a rolling stand without modifications. As a rule, the maximum roll gap is smaller than the maximum stand pitch.

[0049] The first hot rolling stand preferably has a maximum stand pitch of less than or equal to 100 mm in the conveying direction, preferably less than or equal to 80 mm and particularly preferably less than or equal to 70 mm. The maximum stand pitch of the first hot rolling stand preferably has a height of less than or equal to 90 mm, preferably less than or equal to 85 mm and particularly preferably less than or equal to 75 mm. Furthermore, the first hot rolling stand preferably has a maximum stand pitch of greater than or equal to 40 mm in the conveying direction, preferably greater than or equal to 50 mm and particularly preferably greater than or equal to 55 mm.

[0050] With the present hot rolling device, a variety of metal strips with advantageous strip thicknesses can be produced and provided at the exit of the conveyor line if the hot rolling mill for hot rolling the metallic rolled stock, in particular the last hot rolling stand viewed in the conveying direction, is set up to an exit thickness of greater than or equal to 25 mm, preferably greater than or equal to 28 mm, furthermore preferably greater than or equal to 35 mm and particularly preferably greater than or equal to 40 mm. Further advantageously, the last hot rolling stand viewed in the conveying direction can be set up to an exit thickness of greater than or equal to 30 mm, preferably greater than or equal to 32 mm and particularly preferably greater than or equal to 37 mm.

[0051] Other advantageous run-out thicknesses for metallic rolled goods with a strip width of greater than or equal to 2,200 mm are, for example, 50 mm, 60 mm, 70 mm or greater.

[0052] In order to be able to produce metallic rolled goods with the desired width, it is also advantageous if the at least three hot rolling stands each have at least one pair of work rolls with work rolls having a work roll barrel width of greater than or equal to 2,200 mm, preferably of greater than or equal to 2,300 mm and particularly preferably of greater than or equal to 2,400 mm.

[0053] In the context of the invention, the term "work roll barrel width" describes the working area of ​​the work roll which can be effectively connected to the metallic rolling stock during hot rolling or for hot rolling.

[0054] The work roll barrel width extends longitudinally or in the direction of the rotation axis of the work roll.

[0055] The total width of the work roll can be larger than the work roll barrel width.

[0056] If the at least one hot rolling stand comprises at least one pair of work rolls with a work roll barrel width of less than or equal to 4,000 mm, preferably less than or equal to 3,500 mm, and particularly preferably less than or equal to 3,000 mm, the present hot rolling mill can still advantageously be dimensioned to be compact and cost-efficient, even with more than three hot rolling stands. Furthermore, the at least one hot rolling stand can preferably comprise at least one pair of work rolls with a work roll barrel width of less than or equal to 6,000 mm, preferably less than or equal to 5,000 mm, and particularly preferably less than or equal to 2,800 mm.

[0057] A particularly advantageous output rate of finished-rolled and such wide metallic rolling stock can be achieved if the hot rolling mill has an exit speed of greater than or equal to 0.5 m / s, preferably greater than or equal to 1 m / s, and particularly preferably greater than or equal to 2 m / s, with respect to the last hot rolling stand. Preferably, the exit speed of the last hot rolling stand has a value of greater than or equal to 5 m / s, preferably greater than or equal to 10 m / s, further preferably greater than or equal to 15 m / s, and particularly preferably greater than or equal to 20 m / s.

[0058] The metallic rolling stock with a width of 2,200 mm or more can be reliably moved and rolled along the conveyor line in the conveying direction if the exit speed of the last hot rolling stand is selected to be less than or equal to 25 m / s, preferably less than or equal to 22 m / s, and particularly preferably less than or equal to 20 m / s. The exit speed of the last hot rolling stand preferably has a value of less than or equal to 17 m / s, preferably less than or equal to 14 m / s, further preferably less than or equal to 11 m / s, and particularly preferably less than or equal to 8 m / s.

[0059] In order to still be able to achieve a very good rolling quality on the metallic rolling stock at the proposed run-out speeds, it is advantageous if at least one hot rolling stand, preferably the at least three hot rolling stands, is equipped with finishing work rolls.

[0060] Furthermore, it is expedient if at least one cooling device, in particular a laminar cooling device, is arranged further downstream of the last hot rolling stand, wherein the at least one cooling device can preferably be arranged at a distance from the last hot rolling stand of less than or equal to 15 m, preferably of less than or equal to 10 m and particularly preferably of less than or equal to 7 m.

[0061] Optionally, a cooling device may comprise a direct cooling device, wherein a direct cooling device is configured to cool the metallic rolling stock in the conveying direction immediately behind a roll gap, preferably at a distance from the roll gap of less than or equal to 500 mm or less than or equal to 300 mm.

[0062] Preferably, a cooling device may comprise a compact cooling system.

[0063] By selecting such a small transition distance between the last hot rolling stand - evaluated in the conveying direction - and the start of the at least one cooling device, the time period between the last hot rolling process and the start of an actively carried out cooling, in particular an accelerated cooling, by means of a cooling medium of the at least one cooling device can be advantageously reduced, whereby in turn desired material properties on the metallic rolling stock can be realized in an even more targeted and operationally reliable manner.

[0064] Cooling devices for actively cooling a rolled stock by means of suitable cooling media on a conveyor section of a hot rolling device, in particular downstream of a hot rolling mill, are known from the prior art and can be implemented without any problems even for metallic rolled stock with a width of more than 2,200 mm. In particular, a cooling section length and a cooling section width, but also a cooling intensity can be actively selected or adjusted depending on the quality to be achieved of the metallic rolled stock or its material alloy or the like. Cumulatively or alternatively, it is expedient if the at least one cooling device comprises at least one cooling bed device, the cooling bed device having a cooling bed length of greater than or equal to 20 m, preferably greater than or equal to 30 m and particularly preferably greater than or equal to 40 m.

[0065] If the present hot rolling apparatus is equipped with such a cooling bed device, or if such a device can be additionally integrated into the conveyor line of the hot rolling apparatus, plate-shaped metallic rolled goods, in particular metallic rolled goods plates and / or heavy plates, can be easily rolled on the hot rolling apparatus and, in particular, thermally post-treated or specially cooled, namely with the aid of an appropriately dimensioned cooling bed device. Cooling bed devices of this type are known from the prior art and can also be used in the context of the inventive hot rolling apparatus.

[0066] The present hot rolling apparatus can be constructed more compactly if the cooling bed device has a cooling bed length of less than or equal to 80 m, preferably less than or equal to 70 m or less than or equal to 60 m and particularly preferably less than or equal to 50 m.

[0067] Preferably, however, the finished rolled metal stock is wound into a coil at the exit of the conveyor line, i.e., downstream of the hot rolling device. It is therefore advantageous if at least one coiling device for coiling the hot-rolled metal stock is arranged downstream of the last hot rolling stand arranged on the conveyor line.

[0068] In order that the finished rolled metallic rolling stock can be processed immediately on the conveyor line after hot rolling, either into a windable metallic rolling stock or into a metallic rolling stock plate, it is advantageous if at least one separating device, in particular a transverse separating device and / or a longitudinal separating device, is arranged downstream of the last hot rolling stand arranged on the conveyor line.

[0069] A transverse cutting device is designed to divide the metal rolling stock transversely to the conveying direction. A transverse cutting device enables the separation of a longitudinal section of the hot-rolled metal rolling stock.

[0070] A longitudinal cutting device is designed to divide the metallic rolling stock along the conveying direction, so that two metallic rolling stocks, each with a width that is reduced compared to the incoming metallic rolling stock, can be produced from one metallic rolling stock running onto the longitudinal cutting device.

[0071] Preferably, a separating device can be arranged between the last hot rolling stand and a coiling device.

[0072] In order to achieve particularly good flatness of the rolled material strip, it is advantageous if the hot rolling apparatus comprises at least one straightening device, in particular a roller straightening device, for improving the flatness of the hot-rolled metallic rolling stock. In an embodiment in which the hot rolling apparatus comprises a coiling device, a straightening device can be arranged downstream of the coiling device in the conveying direction.

[0073] By means of the proposed hot rolling device, finished rolled metallic rolled goods can be provided even more efficiently if a casting device and / or a furnace is arranged upstream of the hot rolling device, wherein in particular the casting device can have a casting speed of greater than or equal to 0.25 m / min, preferably of greater than or equal to 0.3 m / min or greater than or equal to 0.35 m / min and particularly preferably of greater than or equal to 0.4 m / min. In particular, the casting device can have a casting speed of greater than or equal to 0.6 m / min, preferably of greater than or equal to 1 m / min or greater than or equal to 3 m / min and particularly preferably of greater than or equal to 5 m / min.

[0074] A furnace can also be understood as an induction heating device.

[0075] In this case, the casting device can be arranged on the conveyor line in front of the first hot rolling stand of the hot rolling mill, as seen in the conveying direction.

[0076] If the casting machine has a casting speed of less than or equal to 10 m / min, preferably less than or equal to 7 m / min and particularly preferably less than or equal to 5 m / min, the casting device and the at least three hot rolling stands can easily work together simultaneously in one line.

[0077] In any case, with the present hot rolling device it is possible to finish-roll the metallic rolling stock in a "single heat", namely preferably only with the thermal energy inherent in the metallic rolling stock due to the continuous casting process. In addition, thermal energy can be supplied to the metallic rolling stock by means of a heating device before or between two rolling stands of the hot rolling train, in addition to the heat of the rolling stock upon exiting the casting machine, in particular to compensate for heat losses or to achieve a rolling temperature which is above the temperature of the metallic rolling stock upon exiting the casting machine.

[0078] This also allows the hot rolling device to be operated particularly energy-efficiently.

[0079] The casting device can be designed in different ways, for example as a vertical casting device.

[0080] Vertical casting devices are known in the art. Therefore, it is advantageous if the hot rolling device can operate essentially in synchronization with the casting device.

[0081] It may therefore be expedient if the at least three hot rolling stands of the hot rolling train have a processing or rolling speed which differs by 5% or less, preferably 3% or less and particularly preferably 2% or less from a casting speed of a casting device.

[0082] Furthermore, it may be advantageous, for example for the pre-rolling of metallic rolled goods with a particular thickness, if the hot rolling device is optionally characterized by an additional pre-rolling train with at least one pre-rolling stand. In particular, the pre-rolling train, with respect to the at least one pre-rolling stand, can have a roll gap with a height of less than or equal to 280 mm, preferably less than or equal to 250 mm, and particularly preferably less than or equal to 180 mm, and / or with a height of greater than or equal to 80 mm, preferably greater than or equal to 100 mm, and particularly preferably greater than or equal to 180 mm, viewed in the conveying direction.

[0083] The roughing mill may comprise a first roughing stand, a second roughing stand and / or more than two roughing stands.

[0084] In particular, the roughing mill train may comprise one or more roughing stands which may be configured for reversing rolling of the metallic rolling stock.

[0085] Alternatively, the roughing mill may comprise one or more roughing stands, which may be configured for purely unidirectional rolling of the metallic rolling stock.

[0086] The roughing mill can have a processing or roughing width of greater than or equal to 2,200 mm for processing the metallic rolled stock, preferably greater than or equal to 2,300 mm and particularly preferably greater than or equal to 2,400 mm. Advantageously, the processing or roughing width of the roughing mill corresponds to that of the hot rolling mill.

[0087] The roughing train can have a roll gap with a height of less than or equal to 275 mm, preferably less than or equal to 250 mm and particularly preferably less than or equal to 225 mm, and / or with a height of greater than or equal to 180 mm, preferably greater than or equal to 200 mm and particularly preferably greater than or equal to 225 mm, viewed in the conveying direction with respect to the first roughing stand.

[0088] Furthermore, the roughing train can advantageously have a roll gap with a height of less than or equal to 180 mm, preferably less than or equal to 160 mm and particularly preferably less than or equal to 150 mm, and / or with a height of greater than or equal to 80 mm, preferably greater than or equal to 100 mm and particularly preferably greater than or equal to 120 mm, with respect to the first roughing stand as seen in the conveying direction.

[0089] The roughing mill for roughing the metallic rolling stock can be configured for an exit thickness of greater than or equal to 15 mm, preferably greater than or equal to 20 mm, preferably greater than or equal to 30 mm, and particularly preferably greater than or equal to 40 mm. Furthermore, the roughing mill can be configured for an exit thickness of less than or equal to 100 mm, preferably less than or equal to 90 mm, preferably less than or equal to 80 mm, and particularly preferably less than or equal to 70 mm.

[0090] A roughing stand can each comprise at least one pair of work rolls with work rolls having a work roll barrel width of greater than or equal to 2,200 mm, preferably greater than or equal to 2,300 mm, and particularly preferably greater than or equal to 2,400 mm. A roughing stand can comprise at least one pair of work rolls with work rolls having a work roll barrel width of less than or equal to 4,000 mm, preferably less than or equal to 3,500 mm, and particularly preferably less than or equal to 3,000 mm.

[0091] It is further proposed that a furnace be arranged upstream of the hot rolling device, in which a metallic rolling stock, in particular a slab, can be heated to rolling temperature before rolling. The slab heated here can first be fed to a roughing mill or directly to a hot rolling mill.

[0092] This allows the application range of the present hot rolling device to be advantageously expanded if this is desired with regard to specific customer requirements.

[0093] In this respect, it is possible to arrange several roughing stands on the conveyor line, which can thus form a roughing line within the hot rolling mill.

[0094] In this context, if necessary, additional heating devices, cutting devices or the like may also be provided on the conveying line of the present hot rolling device, provided that they are designed for material strips with a correlating strip width of 2,200 mm or more.

[0095] The object of the invention is also achieved by a plant for producing and / or processing a metallic rolled stock, in particular a semi-finished product and / or a preliminary product and / or an intermediate product and / or a product made of iron, steel and / or a non-ferrous metal material, comprising: a continuously operating casting device for primary shaping the metallic rolled stock and / or a furnace for heating the metallic rolled stock, and • a hot rolling device according to one of the features proposed here in this regard.

[0096] By means of a system designed in this way, the achievable product range can be advantageously expanded, if necessary.

[0097] For example, the metallic rolling stock in the form of slabs can be fed from the casting device into the rolling device in the sense of direct insertion.

[0098] Alternatively or additionally, the metallic rolled stock can be heated in a furnace so that it can then be rolled. This allows the plant to also process cold metallic rolled stock.

[0099] In particular, cast and / or pre-rolled intermediate products with correlating widths can be additionally fed into the conveyor line and immediately rolled in line on the proposed plant. Likewise, cast, temporarily cooled and reheated slabs, especially thick slabs, or even additionally pre-rolled intermediate or intermediate products can be rolled in place.

[0100] For example, a vertical casting device as described above can be used as a continuously operating casting device.

[0101] The plant according to the invention can be operated with an advantageously high throughput if the continuously operating casting device has a casting speed of greater than or equal to 0.25 m / min, preferably of greater than or equal to 0.6 m / min and particularly preferably of greater than or equal to 3 m / min.

[0102] Preferably, the plant comprises a hot rolling device for producing a metallic rolling stock that can be wound into a coil, in particular an endless metallic rolling stock, so that the

[0103] Plant can be operated as a hot strip plant.

[0104] Cumulatively or alternatively, the plant can include a hot rolling device for producing a metallic rolled stock finished into a plate. This allows the proposed plant to be operated like a heavy plate plant, but with a continuous, i.e., uninterrupted, material flow between the casting device and the hot rolling stands of the hot rolling mill, where the metallic rolled stock is unidirectionally finish-rolled.

[0105] The object of the invention is also achieved by a method for hot rolling a metallic rolling stock conveyed along a conveying path in the conveying direction, in which the metallic rolling stock is hot rolled, in particular hot finish rolled, with a strip width of at least 2,200 mm or more, bypassing a reversing rolling process in the region of the hot rolling mill.

[0106] By means of the method according to the invention, material strips with a strip width greater than or equal to 2,200 mm can be rolled or produced in the area of ​​the hot rolling mill without a reversing process, whereby a significant time saving on the one hand and an equally significant energy saving on the other hand can be achieved.

[0107] The hot rolling mill can be connected to a roughing mill in terms of material flow, whereby a reversing process takes place in the roughing mill area but not in the hot rolling mill area.

[0108] The term "material flow" in the context of the invention describes that metallic rolling stock is processed by direct insertion or in one piece, as it is conveyed from the casting device. Both the time and energy savings result from the fact that, on the one hand, the metallic rolling stock is continuously moved and rolled in only one rolling direction, namely the conveying direction, and, on the other hand, finish rolling can be carried out using the "first" heat without further input of thermal energy.

[0109] Rolling of metallic rolled stock with such a dimensioned width could previously only be carried out using a heavy plate mill, in which prefabricated metallic rolled stock plates are hot-rolled into flat metallic rolled stock plates, or by means of a so-called Steckel rolling mill, in which the metallic rolled stock is also hot-rolled several times in a reversing process, whereby the metallic rolled stock can ultimately also be coiled into a coil on the Steckel rolling mill.

[0110] A preferred method variant provides that the metallic rolling stock is hot rolled or hot finish rolled by means of at least three hot rolling stands, in particular finishing stands, arranged directly one behind the other, while the metallic rolling stock is conveyed unidirectionally along the conveyor line in the area of ​​the hot rolling train and is hot rolled or hot finish rolled in the process.

[0111] Advantageously, the metallic rolling stock can be finish-rolled into a further processable semi-finished product or the like by means of the at least three hot rolling stands, while avoiding or even excluding any reversal of direction of the metallic rolling stock during hot rolling. This makes reversing technology entirely unnecessary, allowing the hot rolling process on the hot rolling mill to be completed considerably faster than with reversing rolling mills. Furthermore, the process can be made even simpler if the metallic rolling stock is conveyed forward in the conveying direction along the conveyor line as a continuous material flow, starting from a casting device and extending beyond the last hot rolling stand, particularly without interruption, and is hot-rolled in the process.

[0112] Furthermore, it is advantageous if the metallic rolling stock is cast with a strip width of greater than or equal to 2,200 mm, preferably greater than or equal to 2,300 mm and particularly preferably greater than or equal to 2,400 mm.

[0113] This means that correspondingly wide metallic rolled goods can be hot-rolled or hot-finished in a single heat on the existing rolling mill.

[0114] In this respect, it is advantageous if the metallic rolling stock is finish-rolled in a hot rolling mill with better utilization of the thermal energy introduced into the metallic rolling stock by a casting device.

[0115] The risk of dissipative cooling effects can be effectively counteracted if the transfer time for transferring the metallic rolling stock from the casting device into the first hot rolling stand of the hot rolling mill is less than or equal to 50 minutes, preferably less than or equal to 35 minutes and particularly preferably less than or equal to 20 minutes.

[0116] This can significantly shorten the potential cooling phase of the metallic rolling stock between the end of the casting process and the start of the first hot rolling process.

[0117] Advantageously, the metallic rolling stock can be cut transversely and / or longitudinally to the conveyor line downstream of the last hot rolling stand of the hot rolling mill using a cutting device, thereby preparing it for processing. If the metallic rolling stock is cooled before or after a cutting process using an active or passive cooling device, the desired material properties of the metallic rolling stock can be easily adjusted downstream of the hot rolling mill.

[0118] For example, the finished rolled metal stock can be actively cooled using cooling media, which is particularly suitable for thinner, finish-rolled, and coilable semi-finished products, especially hot strip. This allows for easily accelerated cooling of the metallic stock.

[0119] For semi-finished products that are thicker than plates or the like, passive cooling on a sufficiently large cooling bed device is suitable.

[0120] If the hot-rolled or hot-finish rolled metallic rolling stock is wound up in an area of ​​the exit of the conveyor line and provided as a bundle, the finished rolled metallic rolling stock can be provided compactly for further transport.

[0121] Alternatively - but also cumulatively - it may be expedient if the hot-rolled or hot-finished rolled metallic rolling stock is segmented in an area of ​​the exit of the conveyor line and provided as a flat metallic rolling stock plate.

[0122] It should also be pointed out here that, in the context of this patent application, indefinite articles and indefinite numerical expressions such as "one...", "two...", etc. are generally to be understood as "at least one...", "at least two...", etc., unless the context or the concrete text of a particular passage indicates that only "exactly one...", "exactly two...", etc. are meant. At this point, it should also be mentioned that, in the context of this patent application, the expression "in particular" is always to be understood as introducing an optional, preferred feature. The expression is not to be understood as "and indeed" or "namely".

[0123] Further advantages, details and features of the invention will become apparent from the exemplary embodiments explained below.

[0124] Components which are at least substantially identical in terms of their function in the individual figures can be identified by the same reference numerals, although the components do not have to be numbered and explained in all figures.

[0125] The drawing shows:

[0126] Figure 1: schematically a side view of a hot rolling device with a 3,100 mm wide hot rolling mill comprising four hot rolling stands for unidirectional rolling of the metallic rolling stock continuously cast by means of a casting device with a corresponding width;

[0127] Figure 2: schematically a side view of a hot rolling device with a hot rolling train comprising four hot rolling stands for unidirectional rolling of the metallic rolling stock continuously cast by means of a casting device with a corresponding width and a coiling device;

[0128] Figure 3: schematically shows a side view of a hot rolling apparatus with a roughing train having a roughing stand and with a hot rolling train having four hot rolling stands for unidirectional rolling of the metallic rolling stock continuously cast by means of a casting device with a corresponding width; and Figure 4: schematically shows a side view of a hot rolling apparatus with a roughing train having two roughing stands for unidirectional rolling and with a hot rolling train having four hot rolling stands for unidirectional rolling of the metallic rolling stock continuously cast by means of a casting device with a corresponding width.

[0129] The hot rolling device 1 shown as an example in Figure 1 for hot rolling a continuously cast and / or directly inserted metallic rolling stock 2 has a conveyor line 4 along which the metallic rolling stock 2 is continuously moved or conveyed forward in the conveying direction 6 for hot rolling.

[0130] Furthermore, the hot rolling device 1 has a hot rolling train 8, which in this first possible embodiment shown in Figure 1 comprises a total of four hot rolling stands 8A, 8B, 8C and 8D, but always at least three such hot rolling stands, wherein the hot rolling train 8 can comprise almost any number of such hot rolling stands.

[0131] The hot rolling mill 8 has a processing or hot rolling width 10 which, as shown in Figure 1, runs orthogonally to the plane of the paper.

[0132] The processing or hot rolling width 10 in this embodiment is 3,100 mm, whereby the processing or hot rolling width 10 can of course vary depending on the customer or application and can be adapted accordingly in order to be able to hot roll correspondingly wide metallic rolled goods 2 with a corresponding strip width 10A, for example between 2,200 mm and 3,500 mm.

[0133] The hot rolling stands 8A, 8B, 8C and 8D each have a work roll pair (not shown) with two work rolls (also not shown), wherein the two work rolls can be adjusted relative to each other in order to form a desired roll gap (also not shown).

[0134] In this respect, each of the hot rolling stands 8A, 8B, 8C and 8D is characterized by a correspondingly designed roll gap (not shown), for example with a height of 80 mm.

[0135] The hot rolling stands 8A, 8B, 8C and 8D are designed as finishing rolling stands (not additionally numbered) and are therefore also equipped with finishing rolls.

[0136] In other words, this means that the work rolls are designed as finishing rolls.

[0137] In this first embodiment, the last hot rolling stand 8D of the hot rolling mill 8 is set such that the last hot rolling stand 8D enables an exit thickness of 35 mm with respect to the metallic rolling stock 2.

[0138] To form the compact rolling mill 8, the individual hot rolling stands 8A, 8B, 8C and 8D are arranged directly one behind the other on the conveyor line 4, with a distance 12 of 6 m between the nearest hot rolling stands 8A, 8B, 8C and 8D, i.e. between the hot rolling stands 8A and 8B, 8B and 8C, and 8C and 8D.

[0139] In other configurations of the hot rolling device 1 or in particular of the hot rolling mill 8, other distances 12 can also be set, which can also be selected differently between the individual hot rolling stands 8A, 8B, 8C and 8D.

[0140] In this first embodiment, the hot rolling device 1 is arranged in a plant 14 for producing and / or processing the metallic rolling stock 2, wherein the plant 14 comprises a casting device 16.

[0141] The casting device 16 is arranged directly in front of the hot rolling mill 8 and its hot rolling stands 8A, 8B, 8C and 8D, so that the metallic rolling stock 2 cast by means of the casting device 16 can be hot finish rolled directly with the first heat generated by the casting device 16.

[0142] The hot or hot finish rolling is achieved without problems, among other things, because the casting device 16 is capable of directly casting the metallic rolling stock 2 with the desired width of 3,100 mm and the hot rolling stands 8A, 8B, 8C and 8D are also capable of immediately hot finish rolling the metallic rolling stock 2 cast in this wide manner inline.

[0143] Furthermore, in this first embodiment, the feeding distance 18 between the exit of the casting device 16 and the entrance of the first hot rolling stand 8A is less than 500 m.

[0144] Furthermore, the metallic rolling stock 2 is moved forward exclusively in the conveying direction 6, particularly during rolling with the individual hot rolling stands 8A, 8B, 8C, and 8D, so that the period between the actual casting process and, in particular, the first rolling process can take place with as little delay as possible. This also means that the freshly cast metallic rolling stock 2 can cool down less until the hot rolling process(es) are carried out on the hot rolling mill 8.

[0145] In this respect, the hot rolling stands 8A, 8B, 8C, and 8D are all designed for unidirectional finish rolling, so that the metallic rolling stock 2 can advantageously be hot-rolled without a reversing rolling process. This also contributes to the rapid hot-rolling of the metallic rolling stock 2 cast immediately before.

[0146] For example, the casting device 16 for casting the metallic rolling stock 2 operates at a casting speed of 20, with the individual hot rolling stands 8A, 8B, 8C, and 8D for hot finish rolling the previously cast metallic rolling stock 2 operating at a rolling speed of 22. After the hot rolling process in the hot rolling mill 8, the finished rolled metallic rolling stock 2 is cooled at a cooling device 24, wherein the cooling device 24 is arranged at a transition distance 26 of less than 8 m behind the last hot rolling stand 8D.

[0147] In this case, cooling media (not shown) can be actively used for the accelerated cooling of the metallic rolling stock 2, and / or the metallic rolling stock 2 can alternatively cool passively on a cooling bed device (not separately numbered) as a metallic rolling stock plate (not shown).

[0148] In this embodiment of Figure 1, the cooling device 24 is combined in the region of the exit 32 of the conveyor line 4 with a straightening device 28, by means of which the flatness of the finished rolled metallic rolling stock 2 can be readjusted again, if necessary.

[0149] It can be clearly seen that the metallic rolling stock 2 is conveyed unidirectionally and continuously from the hot side 36 of the hot rolling device 1 to the cold side 38 of the hot rolling device 1 along the conveyor line 4 and is thereby finish-rolled, thus excluding reversal rolling of the metallic rolling stock 2.

[0150] Advantageously, due to the design of the hot rolling device 1 or the plant 14 chosen here, separate roughing and finishing rolling mills (also not shown) can be dispensed with, whereby a fast and cost-effective production of the metallic rolling stock 2 or a semi-finished product or the like therefrom can be guaranteed.

[0151] The hot rolling device 1 shown as an example in Figure 2 for hot rolling a continuously cast and / or directly inserted metallic rolling stock 2 has, in the conveying direction 6 of the conveying section 4, downstream of a first cooling device 24, which is arranged downstream of the last hot rolling stand 8D arranged on the conveying section 4, a separating device 30 for separating and finishing the hot-rolled metallic rolling stock 2.

[0152] Downstream of the separating device 30, a coiling device 34 is arranged, by means of which the finished rolled metallic rolling stock 2 can be coiled into a bundle (not shown) as required.

[0153] As an alternative to coiling the metallic rolling stock 2, it can be transferred to a second cooling device 24 located downstream of the coiling device 34 and cooled. This second cooling device 24 is a cooling bed (not designated) located in the region of the exit 32 of the conveyor line 4.

[0154] Preferably, the above embodiment of a hot rolling device 1 can be supplemented by a straightening device 28, which can preferably be arranged between the coiling device 34 and the second cooling device 24.

[0155] The hot rolling device 1 shown in Figure 3 for hot rolling a metallic rolling stock 2 has a conveyor line 4 along which the metallic rolling stock 2 is continuously moved or conveyed forward in the conveying direction 6 for hot rolling.

[0156] In particular, the hot rolling device 1 may be a hot strip mill (not designated).

[0157] On the hot side 36 of the conveyor line 4, the metallic rolling stock 2 can be provided, among other things, by a heating device (not shown).

[0158] The hot rolling mill 1 has a roughing train 40 on the hot side with a first roughing stand 40A for rough rolling the metallic material 2. The first roughing stand 40A can be configured for reversible rolling of the metallic rolling stock 2 and can be characterized by a roll gap (not shown) that can vary between 20 mm and 250 mm.

[0159] It can be provided that the metallic rolling stock 2, in particular with a thickness between 200 mm and 250 mm, can first run onto the first roughing stand 40A in the conveying direction and be rolled there, in particular can be rolled in reverse. It is conceivable that the metallic rolling stock 2, in the conveying direction 6, with a thickness in a range of 20 mm to 80 mm, can first run from the roughing train 40 onto the hot rolling train 8 and be further processed or further rolled there, in particular with the at least three rolling stands 8A, 8B, 8C, and 8D.

[0160] The hot rolling device 1 in Figure 4 for hot rolling a continuously cast and / or directly inserted metallic rolling stock 2 has a conveyor line 4 along which the metallic rolling stock 2 is continuously moved or conveyed forward in the conveying direction 6 for hot rolling.

[0161] The hot rolling device 1 has both a roughing mill 40 and a hot rolling mill 8.

[0162] The roughing mill 40 in the present case has a first roughing stand 40A and a second roughing stand 40B, which can be configured for purely unidirectional rolling of the metallic rolling stock 2.

[0163] The hot rolling mill 8 arranged downstream in the conveying direction 6 has a total of four hot rolling stands 8A, 8B, 8C and 8D, but always at least three such hot rolling stands, whereby the hot rolling mill 8 can comprise almost any number of such hot rolling stands.

[0164] The hot rolling device 1 according to Figure 4 is designed to provide a metallic rolling stock 2 with a thickness in a range between 100 mm and 160 mm by means of the casting device 16.

[0165] The metallic rolling stock 2 can then be rolled by the first roughing stand 40A and the second roughing stand 40B of the roughing train 40 to a thickness in a range between 20 mm to

[0166] 80 mm thickness, especially with a single unidirectional rolling with the roughing mill 40.

[0167] The metallic rolling stock 2 can then be conveyed in the conveying direction 6 to the hot rolling mill 8 and its hot rolling stands 8A, 8B, 8C and 8D, where a further processing step or

[0168] rolling process can be carried out.

[0169] List of reference symbols

[0170] 1 hot rolling device

[0171] 2 Metallic rolled goods

[0172] 4 conveyor line

[0173] 6 Conveying direction

[0174] 8 Hot rolling mill

[0175] 8A first hot rolling stand

[0176] 8B second hot rolling stand

[0177] 8C third hot rolling stand

[0178] 8D fourth hot rolling stand

[0179] 10 processing or hot rolling width

[0180] 10A bandwidth

[0181] 12 distance

[0182] 14 Appendix

[0183] 16 Pouring device

[0184] 18 Feed distance

[0185] 20 casting speed

[0186] 22 rolling speed

[0187] 24 Cooling device

[0188] 26 Transition distance

[0189] 28 Straightening device

[0190] 30 Separator

[0191] 32 Exit

[0192] 34 Reeling device

[0193] 36 Warm side

[0194] 38 Cold side

[0195] 40 Roughing mill

[0196] 40A first roughing stand

[0197] 40B second roughing stand

Claims

Patent claims 1. Hot rolling device (1) for hot rolling a metallic rolling stock (2) conveyed along a conveying path (6) in the conveying direction (4), comprising: • a hot rolling mill (8) for hot rolling the metallic rolling stock (2) with at least three hot rolling stands (8A, 8B, 8C, 8D), wherein • the hot rolling mill (8) has a processing or hot rolling width (10) of greater than or equal to 2,200 mm for processing the metallic rolling stock (2), preferably of greater than or equal to 2,300 mm and particularly preferably of greater than or equal to 2,400 mm.

2. Hot rolling device (1) according to claim 1, characterized in that the at least three hot rolling stands (8A, 8B, 8C, 8D) of the hot rolling train (8) each comprise a finishing rolling stand, in particular each a finishing rolling stand operating exclusively unidirectionally.

3. Hot rolling device (1) according to claim 1 or 2, characterized in that the metallic rolling stock (2) can be hot rolled on the conveyor line (4) bypassing a reversible device in the region of the hot rolling train (8), in particular a reversible hot rolling stand.

4. Hot rolling device (1) according to one of claims 1 to 3, characterized in that the at least three hot rolling stands (8A, 8B, 8C, 8D), in particular working roll pairs thereof, are arranged at a distance (12) of less than or equal to 20 m from one another, preferably of less than or equal to 10 m and particularly preferably of less than or equal to 6 m, and / or at a distance (12) of greater than or equal to 2 m, preferably greater than or equal to 3 m and particularly preferably greater than or equal to 4 m.

5. Hot rolling device (1) according to one of claims 1 to 4, characterized in that the hot rolling train (8) has a roll gap with a height of less than or equal to 100 mm, preferably less than or equal to 90 mm and particularly preferably less than or equal to 80 mm, and / or with a height of greater than or equal to 15 mm, preferably greater than or equal to 20 mm and particularly preferably greater than or equal to 30 mm, with respect to the first hot rolling stand (8A) seen in the conveying direction (6).

6. Hot rolling device (1) according to one of claims 1 to 5, characterized in that the hot rolling train (8) is set up for hot rolling the metallic rolling stock (2) to a run-out thickness of greater than or equal to 25 mm, preferably greater than or equal to 28 mm, more preferably greater than or equal to 35 mm and particularly preferably greater than or equal to 40 mm.

7. Hot rolling device (1) according to one of claims 1 to 6, characterized in that the at least three hot rolling stands (8A, 8B, 8C, 8D) each have at least one pair of working rolls with Work rolls having a work roll barrel width of greater than or equal to 2,200 mm, preferably greater than or equal to 2,300 mm and particularly preferably greater than or equal to 2,400 mm.

8. Hot rolling device (1) according to one of claims 1 to 7, characterized in that the hot rolling stands (8A, 8B, 8C, 8D) comprise at least one pair of work rolls with work rolls having a work roll barrel width of less than or equal to 4,000 mm, preferably of less than or equal to 3,500 mm and particularly preferably of less than or equal to 3,000 mm.

9. Hot rolling device (1) according to one of claims 1 to 8, characterized in that the hot rolling train (8) with regard to the last hot rolling stand (8C, 8D) has an exit speed of greater than or equal to 0.5 m / s, preferably greater than or equal to 1 m / s and particularly preferably greater than or equal to 2 m / s, and / or an exit speed of less than or equal to 25 m / s, preferably less than or equal to 22 m / s and particularly preferably less than or equal to 20 m / s.

10. Hot rolling device (1) according to one of claims 1 to 9, characterized in that at least one cooling device (24) is arranged further downstream of the last hot rolling stand (8D), in particular a laminar cooling device, wherein the at least one cooling device (24) is preferably arranged at a distance from the last hot rolling stand (8C, 8D) by a transition distance (26) of less than or equal to 15 m, preferably of less than or equal to 10 m and particularly preferably of less than or equal to 7 m.

11. Hot rolling device (1) according to claim 10, characterized in that the at least one cooling device (24) comprises at least one cooling bed device, wherein the cooling bed device has a cooling bed length of greater than or equal to 20 m, preferably of greater than or equal to 30 m and particularly preferably of greater than or equal to 40 m, and / or a cooling bed length of less than or equal to 80 m, preferably of less than or equal to 70 m and particularly preferably of less than or equal to 60 m.

12. Hot rolling device (1) according to one of claims 1 to 11, characterized in that downstream of the last hot rolling stand (8D) arranged on the conveyor line (4) at least one coiling device (34) for coiling the hot-rolled metallic rolling stock (2) is arranged.

13. Hot rolling device (1) according to one of claims 1 to 12, characterized in that downstream of the last hot rolling stand (8C, 8D) arranged on the conveyor line (4) at least one separating device (30) for separating the hot-rolled metallic rolling stock (2) is arranged, in particular a transverse separating device and / or a longitudinal separating device.

14. Hot rolling device (1) according to one of claims 1 to 13, characterized in that the hot rolling device (1) has at least one straightening device (28), in particular a roller straightening device, for improving the flatness of the hot-rolled metallic rolling stock (2).

15. Hot rolling device (1) according to one of claims 1 to 14, characterized in that a casting device (16) and / or a furnace is arranged upstream of the hot rolling device (1).

16. Hot rolling device (1) according to one of claims 1 to 15, characterized by an additional roughing train (40) with at least one roughing stand (40A, 40B), in particular the roughing train (40) has, with respect to the at least one roughing stand (40A, 40B), a roll gap with a height of less than or equal to 280 mm, preferably less than or equal to 250 mm and particularly preferably less than or equal to 180 mm, and / or with a height of greater than or equal to 80 mm, preferably greater than or equal to 100 mm and particularly preferably greater than or equal to 180 mm, as seen in the conveying direction (6).

17. Plant (14) for producing and / or processing a metallic rolled product (2), in particular a semi-finished product and / or a preliminary product and / or an intermediate product and / or a product made of iron, steel and / or a non-ferrous metal material, comprising: a continuously operating casting device (16) for primary forming the metallic rolling stock (2) and / or a furnace for heating the metallic rolling stock (2), and • a hot rolling device (1) according to one of the preceding claims.

18. Plant (14) according to claim 17, characterized in that the plant comprises a hot rolling device (1) for producing a metallic rolled stock (2) that can be wound into a coil.

19. Plant (14) according to one of claims 17 or 18, characterized in that the plant comprises a hot rolling device (1) for producing a metallic rolled stock (2) finished into a plate.

20. Method for hot rolling a metallic rolling stock (2) conveyed along a conveyor line (4) in the conveying direction (6), in which the metallic rolling stock (2) is hot rolled, in particular hot finish rolled, in the region of a hot rolling train (8) with a strip width (10A) of at least 2,200 mm or more, bypassing a reversing rolling process.

21. Method according to claim 20, characterized in that the metallic rolling stock (2) is hot-rolled or hot-finish-rolled by means of at least three hot-rolling stands (8A, 8B, 8C, 8D) arranged directly one behind the other, in particular finishing stands, while the metallic rolling stock (2) is conveyed unidirectionally along the conveyor line (4) in the region of the hot-rolling train (8) and is hot-rolled or hot-finish-rolled in the process.

22. Method according to claim 20 or 21, characterized in that the metallic rolling stock (2) is conveyed forwards on the conveying path (4) in the conveying direction (6) as a continuous material flow from a casting device (16) to behind the last hot rolling stand (8C, 8D), in particular without interruption, and is hot-rolled in the process.

23. Method according to one of claims 20 to 22, characterized in that the metallic rolling stock (2) is finish-rolled in a hot rolling train (8) with better utilization of thermal energy introduced into the metallic rolling stock (2) by a casting device (16).

24. Method according to one of claims 20 to 23, characterized in that the transfer time for transferring the metallic rolling stock (2) from the casting device (16) to the first hot rolling stand (8A) of the hot rolling train (8) is less than or equal to 50 minutes, preferably less than or equal to 35 minutes and particularly preferably less than or equal to 20 minutes.

25. Method according to one of claims 20 to 24, characterized in that the metallic rolling stock (2) downstream of the last hot rolling stand (8C, 8D) of the hot rolling train (8) is severed transversely and / or longitudinally to the conveyor line (4) with a separating device (30) and is thereby finished.

26. Method according to one of claims 20 to 25, characterized in that the metallic rolling stock (2) is cooled before or after a cutting operation by means of an active cooling device (24) and / or a passive cooling device (24).

27. Method according to one of claims 20 to 26, characterized in that the hot-rolled or hot-finished rolled metallic rolling stock (2) is wound up in a region of the exit (32) of the conveyor line (4) and provided as a bundle.

28. Method according to one of claims 20 to 27, characterized in that the hot-rolled or hot-finished rolled metallic rolling stock (2) is provided in a region of the exit (32) of the conveyor line (4) as a flat metallic rolling stock plate.

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