EP2427281B1 - Method for producing a milling product milled in a mill train of a mill assembly, control and/or regulating device for a mill assembly for producing milled products and/or milled product section, mill assembly for producing milled products, machine readable program code and storage medium - Google Patents

Description

The invention relates to a method for producing a rolling stock rolled in a rolling train of a rolling mill. A generic method is eg off WO-A 20070738411 known. Furthermore, the invention relates to a control and / or regulating device for a rolling mill for the production of rolled rolled stock. In addition, the invention relates to a rolling mill for the production of rolled rolled stock. Furthermore, the invention relates to machine-readable program code and a storage medium with machine-readable program code.

In the production of semi-finished products, in particular of metal strips, in the metal-working industry, production plans are made for the utilization of corresponding installations for producing a corresponding product. To produce the corresponding product, a corresponding process flow plan is provided whereby the product entering a plant is converted into a desired product leaving the plant.

Also in rolling mills for the production of metal strips for this purpose, a flow chart of the rolling process for a particular product is determined. Such a process flowchart relating to a rolling stand or to a plurality of rolling stands, in particular a rolling train, is called pass schedule. Here, a single pass through the rolling stock is considered by a rolling mill as a stitch. In general, a variety of products are produced by a rolling mill, which are dependent on the operation of the rolling mill.

If the processing of a rolling stock in a rolling plant leads to a disruption of the process, there will be a deviation of the conditions existing in the rolling mill for the rolling of the rolling stock and the conditions for rolling the rolling stock presupposed for the pass schedule. Due to this deviation, it can happen that a certain product can no longer be produced according to its pass schedule due to an undesired process deviation.

Under these circumstances, it may be necessary to stop the entire rolling mill to remove a no longer processable rolling stock from the rolling mill. Otherwise, scrap is produced because the quality parameters of the product can no longer be met. This leads to production losses and possibly even damage to the rolling mill.

The object of the present invention is to reduce production losses of rolling mills, in particular cast roll mills, by undesired process deviations which influence the production of an outlet product.

The object is achieved by a method for producing a rolled product rolled in a rolling train of a rolling plant, in particular casting rolling mill, wherein the rolling mill is operated continuously by the rolling stock during the scheduled operation of a device supplying the rolling mill, in particular a casting device and / / or a Walzgutwickeleinrichtung until at least one Walzgutzuführeinrichtung downstream in the mass flow direction finishing mill is integrally formed by the rolling continuously enters the finishing train and is rolled in the finishing train continuously to a first outlet product. In this case, the operation of the rolling mill is monitored for the occurrence of a rolling process affecting the deviation from the scheduled operation of the rolling mill, which is checked when the deviation occurs, whether in consideration of the deviation, a second different from the first Discontinued product can still be produced. In Nichtherstellbarkeit the second outlet product, the operation of the rolling mill is changed from the continuous operation in a discontinuous operation.

The Walggutzuführeinrichtung serves to supply rolling stock in the rolling mill. This can, for example, be a casting device in cast roll composite systems. However, this may be e.g. also a Walzgutwickeleinrichtung, in particular Walzgutabwickeleinrichtung be, which the rolling mill by unwinding of unwound rolled material to be processed rolling stock, in particular hot strip, feeds. This can be designed in particular as a reel or as a coil box for hot strip. In particular, a plurality may be provided to Walzgutwickeleinrichtungen for feeding rolling stock in the rolling mill. Preferably, the Walggutzuführeinrichtung is designed such that by means of this rolling continuously in the rolling mill can be introduced.

By changing the operating mode of the rolling mill from a continuous operation to a discontinuous operation, also called batch mode, the operation of the rolling mill is made more flexible, since the aggregates of the rolling mill are decoupled from each other. This makes it possible to roll pass patterns that are not rollable from a technological point of view during continuous operation. This makes it possible to maintain a rolling operation, although neither the first outlet product, nor an alternative outlet product can be produced in the continuous operation of the rolling mill.

Deviation is understood to mean a process deviation by which the first, originally produced or desired outlet product can no longer be produced. The deviation can be predictable or unexpected.

The criterion of non-manufacturability includes both a "hard", ie technical, non-manufacturability, ie a discontinued product is technically under the given boundary conditions easy not to produce, as well as a "soft" Nichtherstellbarkeit, ie an outlet product is technically manufacturable, but undesirable by the operator, for example, due to economic reasons, since the technically manufacturable outlet product, for example, has a low manufacturing priority and thus possibly have a long storage time, which, for example for logistical or financial reasons is not desirable. With regard to the technical manufacturability, it is also preferably checked whether a desired flatness and a desired profile can be set in the case of an existing deviation, so that the target corridor for flatness and profile is achieved.

In an advantageous embodiment of the invention, when the second outlet product is producible, the second outlet product is produced. This is preferably done automatically. For this a stitch plan calculation takes place under the changed, u.a. caused by the process deviations, boundary conditions. If a pass plan or an alternative expiry product can be determined that is still processable in view of the deviation, then this pass schedule or alternative discontinued product is produced in continuous operation. Thereby, a continuous operation of the rolling mill can be maintained.

In a further advantageous embodiment of the invention, in the case of manufacturability of the second outlet product, it is selected whether the second outlet product is produced or the operation of the rolling plant is changed to a discontinuous operation. This is particularly useful when only not yet desired by the customer outlet products are produced or only products can be produced with very low production priority. In such cases, it may be appropriate, despite manufacturability of an alternative outlet product to switch to a discontinuous operation of the rolling mill to produce the first outlet product or a higher second outlet product with higher manufacturing priority, than that in continuous operation producible outlet products. The decision as to whether to proceed to a discontinuous operation in the case of the present producible second discontinued product can be made manually or automatically.

In a further advantageous embodiment, preferably before transition from continuous operation to discontinuous operation, it is checked whether the first or a further second outlet product can be produced in discontinuous operation. The further second outlet product may be identical or different from the second outlet product determined for continuous operation. Such a check makes it possible, in particular before changing the operation, to determine which outlet product is to be produced in discontinuous operation. For example. For example, the first run-out product, which has been produced in continuous operation, may be produced due to the presence of the deviation, although not continuous operation, but still in discontinuous operation. This makes it possible to realize a production strategy that is as optimal as possible, since in particular high-priority discontinued products, which, for example, were produced in continuous operation, can also be produced even further by changing over the operating mode. Thus, if necessary, a sales order can still be processed completely, although this would not have been possible in continuous operation.

In a further advantageous embodiment of the invention, the change takes place in the discontinuous operation by separating, in particular cutting, of the rolling stock between the Walggutzuführeinrichtung, in particular the casting device or the Walzgutwickeleinrichtung, and the finishing train takes place. Particularly advantageous is a cutting of the rolling stock in the mass flow direction behind a High Reduction Mill or a roughing train, if included by the rolling mill. The cutting can be done with conventional tools, in particular in a mechanical or thermal manner.

In a further advantageous embodiment of the invention, when changing the operation to the discontinuous operation, a Walzgutzuführgeschwindigkeit of Walzgutzuführeinrichtung rolling stock, in particular a casting speed of the casting or a winding speed of Walzgutwickeleinrichtung, at least briefly reduced and / or increases a rolling speed of the finishing train. As a result, the distance of successive rolling stock is increased, whereby a more flexible handling of the individual rolling stock can take place. For example, during the cutting, in particular cutting, the casting speed can be reduced compared to the casting speed in continuous operation. Advantageously, at least the entry speed is increased in the rolling train, in particular finishing train. As a result, after completion of the cutting operation, the part of the rolling stock facing the finish rolling line is accelerated away from the separating device in the direction of the finishing train, whereby a gap is created between the rolling stock entering the rolling train and the rolling stock upstream of the separating device in the mass flow direction. This allows a more flexible handling of rolling stock located in the finishing train, since the coupling of the units is canceled by the cutting process.

In a further advantageous embodiment of the invention, the rolling stock between Walzgutzuführeinrichtung, in particular casting device or Walzgutwickeleinrichtung, and finishing train is cut at least twice to increase a distance of successively rolling into the finishing train, with the first and second cut limited part of the rolling removed from the rolling process becomes. It is thereby achieved that the gap between the separated by the cutting rolling parts is further increased by a part of the rolling stock is separated from the original strand. As a result, the rolling of an outlet product is further flexibilized. This separated part of the rolling stock can be stored if necessary, or forms scrap. The latter is to the effect acceptable, since if necessary, with insufficient distance of the rolling stock from each other, the entire rolling stock in the plant would form scrap, as possibly no discontinued product can be produced.

The object is also achieved by a control and / or regulating device for a rolling mill for the production of rolled rolling stock, with a machine-readable program code having control commands, which in their embodiments, the control and / or regulating device for performing the method according to one of the claims 1 to 7 cause.

The object is also achieved by a rolling plant, in particular Gießwalzverbundanlage, for producing rolled rolled, with a device for feeding rolling stock in the rolling mill, in particular with a casting device for continuous casting of rolling stock or with a Walzgutwickeleinrichtung for unwinding wound rolled, with a A finishing mill for rolling rolling, comprising a separation device for separating rolling stock arranged in the mass flow direction between the rolling material supply device and the finishing train, with a control and / or regulating device according to claim 8, wherein the finishing train, the rolling material supply device and the separating device are operatively connected to the control and / or regulating device are.

Furthermore, the object is achieved by a machine-readable program code for a control and / or regulating device for a rolling mill, wherein the program code has control commands that cause the control and / or regulating device for carrying out the method according to one of claims 1 to 7.

In addition, the object is achieved by a storage medium having a machine-readable program code stored thereon according to claim 10.

FIG 1

eine schematische Darstellung einer Gießwalzanlage ausgebildet zur Durchführung einer Ausführungsform des erfindungsgemäßen Verfahrens,

FIG 2

eine Ablaufdiagramm für eine beispielhafte Ausführung eines Ablaufs des erfindungsgemäßen Verfahrens.

FIG 3

eine schematische Walzanlage mit einer Walzgutabwickeleinrichtung zur Walzgutzuführung

Further advantages of the invention will become apparent from an embodiment which is explained in more detail below with reference to the drawings shown schematically. Show it:

FIG. 1

FIG. 2 a schematic representation of a cast roll plant designed to carry out an embodiment of the method according to the invention, FIG.

FIG. 2

a flowchart for an exemplary embodiment of a sequence of the inventive method.

FIG. 3

a schematic rolling mill with a Walzgutabwickeleinrichtung for Walggutzuführung

The in the FIG. 1 illustrated rolling mill 1 is formed as Gießwalzverbundanlage and includes a casting device 6, with which metal is poured, hereinafter referred to as rolling G, which is then subjected to a rolling process.

In the present example, the rolling process is illustrated by means of a three-stand rolling train 2, which stands schematically for a finishing train 2.

The casting device 6 may be formed, for example, as a mold. Likewise, the casting device 6 may be designed as a roller casting machine. There are no restrictions on the usable pouring equipment.

In scheduled operation, the rolling mill 1 is operated in a so-called endless operation, i. It is cast continuously metal and fed directly to a rolling process, in particular a finish rolling process. The rolling stock thus extends in the scheduled operation continuously from the casting device 6 to the finishing train 2.

A rolling stock G emerging from the casting device 6 passes through the rolling mill 1. In this case, this rolling stock G can first pass through units, such as an oven, a segment cooling device, a descaling device and / or a roughing mill, in particular a high reduction mill 11, before the rolling stock section G enters the finishing train 2.

Subsequently, the rolling stock G passes through the finishing train 2 and optionally further downstream of the finishing train 2 in mass flow direction aggregates, such as a cooling section and / or a coiler, by means of which the rolling stock G is wound.

The finishing train 2 comprises in the illustrated rolling mill 1 three rolling stands 3 and 4 or 5, which are symbolic of the rolling stands of a finishing train. A finishing train generally comprises more than three rolling mills, in particular four, five or six mills.

Each rolling stand 3, 4 and 5 respectively comprises a pair of work rolls and a pair of back-up rolls, which are not designated in detail in the figure. The nature of the rolling stands of the finishing train 2 in detail, does not play a significant role in the practice of the invention.

After the last rolling stand 5, an outlet product A with the thickness D leaves the last rolling stand 5 of the finishing train 2. This is the scheduled, first discontinued product A.

This is generally further processed after leaving the finishing train 2, for example, in the context of one of the finishing train 2 downstream in the mass flow direction aggregate. As explained above, such an aggregate may for example be a cooling section, by means of which a desired phase or structural state of the rolling stock is set, and / or a coiler for winding the strip and / or other units.

According to the embodiment, all units of the rolling mill 1, which can influence a mass flow stream in the rolling mill 1, in particular by the finishing train 2, operatively connected by means of a control and / or regulating device 8. The control and / or regulating device 8 monitors the scheduled operation of the rolling mill 1, in particular the scheduled operation of the finishing train 2 according to a first pass schedule for producing a first outlet product A with the thickness D.

During the production of this discontinued product A, expected or even unexpected deviations from the scheduled operation of the rolling mill 1 can occur.

An expected deviation from the scheduled operation, for example, the emptying of the pouring device 6 be because the supply of liquid metal can not be maintained. Such a process is usually foreseeable. The operating staff knows when this condition will occur. However, this usually undesirable process deviation must be reacted.

Unforeseeable deviations from the scheduled operation for producing the first outlet product A according to the first pass plan can be caused, for example, by a short-term increase or decrease in the casting speed of the casting device 6, by a malfunction of an aggregate, for example a furnace and / or a cooling device, in particular a segment cooling device , which is upstream of the finishing train 2 in the mass flow direction or are, or by technical problems during coiling of the belt on the coiler, which is downstream of the finishing train 2. Such deviations require an instantaneous reaction to the deviation, since, for example, in the case of mass flow changes, for example by a short-term casting speed change, the mass flow downstream and / or upstream relative to the mass flow through the finishing train 2 is different. This leads to significant problems in the rolling mill 1. In particular, a wave formation or a crack of the rolling G occur.

Furthermore, such a deviation can also be caused by other influences which are not directly caused by a change in the mass flow through the rolling mill 1. An example of this is e.g. a desired deviation in the rolling stock temperature at a certain point before the rolling train, such as when entering the finishing train 2. This can cause the discontinued product A with the thickness D is no longer rollable, since the material when entering due to the low temperature too hard to roll it to the desired final thickness. Here, too, it is necessary to react quickly in order to avoid incorrect processing or even damage to the system.

The reduction of the adverse effects of such process deviations can be done by means of the method according to the invention or means prepared according to the invention.

Such a method is preferably implemented in the form of a machine-readable program code 9. The program code can be stored on the control and / or regulating device 8 by means of a storage medium 10, for example a CD or another data carrier. The control and / or regulating device 8 is thus designed to cause at least one embodiment of the method according to the invention in response to a process deviation detected by the control and / or regulating device 8.

If such a process deviation is recognized by the control and / or regulating device 8, ie, that a discontinued product A produced in the scheduled continuous operation of the rolling plant 1 can no longer be produced under the process deviation, then by means of the control and / or regulating device 8, to determine an alternative outlet product A * with a discharge thickness D *, which can still be produced in continuous operation under the present process disturbance.

If an alternative outlet product A * can be produced industrially in the continuous operation of the rolling plant 1 and it also makes sense to produce this alternative outlet product A * at the appropriate time, then the finishing train 2 during rolling of the outlet product A to a new, the alternative outlet product A * assigned stitch plan changed over. This stitch plan is determined by known methods, eg shown in DE 44 21 005 B4 or DE 37 21 744 A1 ,

To what extent the production of the alternative outlet product A * makes sense, despite technical feasibility, can be left to the operator, since this usually has the knowledge to operate his rolling mill 1 economically. For this purpose, the operator or the operator of a choice, preferably in the control room, be granted.

If no alternative run-out product can be determined within a given time that can be produced in the present process deviation in the continuous operation of the rolling mill 1 for technical or economic reasons and / or only discontinued products can be determined whose production at this time due to e.g. For economic reasons is not appropriate, then a change in the operation of the rolling mill 1 can be carried out from a continuous operation in a discontinuous operation. As a result, increased flexibility in the process sequence of the rolling mill 1 is obtained because the existing coupling of the aggregates of the rolling mill is canceled by the rolling stock G.

In order to move from a continuous operation to a discontinuous operation of the rolling mill, the control and / or regulating device 8 controls a separating device 7, for example a flying shears, which is located between finish rolling line 2 and casting device 6, preferably after a high reduction mill 11. is arranged and the continuous formed between casting device 6 and finishing train 2 rolling stock G divided. Is a roughing street, for example in the form of a High Reduction Mill 11, the finishing train 2 upstream in the mass flow direction, it can be advantageous to separate the rolling stock between finishing train 2 and High Reduction Mill, since the rolling stock already has a correspondingly small thickness.

The scissors 7 severed the rolling stock G perpendicular to the mass flow direction of the rolling mill 1. Preferably, after completion of the cutting process or cutting, the rolling speed of the finishing train 2 is at least temporarily increased, so that the separated, finishing mill side of the rolling stock G in the mass flow direction of the separator. 7 is accelerated away. Possibly. is preferably reduced shortly before or at the beginning of the separation, the casting speed of the pouring device 6 at least for a short time. By reducing the casting speed, the cutting of the rolling stock G is simplified and, after completion of cutting, the largest possible gap between the separated part of the rolling stock G and the part 7 of the rolling stock G which is still upstream of the separating device 7 in the mass flow direction is generated. However, slower casting reduces system throughput. In addition, i.d.R. a pouring device comparatively sluggish in the scheme. For this reason, an attempt should be made to create a corresponding gap only with the aid of the rolling speed. The greater the distance between two separate rolled goods when entering the finishing train 2, the more the operation of the finishing train 2 can be made more flexible. The more flexible the operation of the finishing train 2 can be designed, the more possible outlet products can be realized in principle. In particular, it is advantageous to set the rolling speed of the finishing train significantly higher than the casting speed of the casting device or the outlet speed of the rolling stock from a possibly existing High Reduction Mill.

For this reason, if necessary, further measures can be taken to close the gap or the distance between two consecutively to increase or increase the finishing train 2 incoming rolling stock.

For example, if the rolling speed of the finishing train and the casting speed are appropriately set, the rolling stock G can be cut twice in a short time, with the piece of rolling stock then separated by the cuts being discharged from the process. By such a procedure, the gap of two successively entering the finishing train rolling mill goods can be further increased. The time interval of the at least two sections depends on the size of the gap that is to be generated.

This piece, which is bounded by at least two cuts, can be cut such that it has the dimensions of a slab and can be further processed in the rolling mill 1 at a later time. By applying this piece from the current operation of the rolling mill 1 this can be stored in a warehouse and introduced back into the rolling mill 1 or in the rolling process if necessary. As a result, no scrap is produced. Nevertheless, the operation of the finishing train is made more flexible by providing a sufficiently large gap between two rolled goods entering the finishing train in turn.

As a separator 7, for example, a corresponding pair of scissors may be used, e.g. a flying scissors, by means of which a band can be cut. However, it is also possible to use drum shears, which are e.g. Scrap a predetermined portion of the rolling stock to increase a gap to the temporally preceding rolling. Also, if necessary, laser cutting device or the like can be used as a separator 7.

FIG. 2 shows a schematic flow diagram for an embodiment of the method according to the invention. The flowchart assumes that the rolling mill 1 is operated in a scheduled continuous operation. The rolling stock is thus formed from the Walzgutzuführeinrichtung to the finishing train in one piece or in one piece.

During scheduled operation, it is constantly checked whether there are process deviations which lead to the result that the first discontinued product can no longer be produced. For this purpose, the control and / or regulating device is supplied with corresponding information from the individual units and possibly from further sensors detecting the process and / or the condition of the rolling plant and evaluated by the latter. This happens in a method step 100.

If it is determined in a method step 101 that there is no process deviation, the monitoring of the operation of the rolling plant is continued.

If it is determined in a method step 101 that a corresponding deviation of the process is present, so that the first outlet product can no longer be produced, then the control and / or regulating device is initially used to search for an alternative outlet product which can still be produced in the present process deviation , This is done in a method step 102. Here it is determined whether and which discontinued products can be produced technically under continuous operating mode of the rolling mill.

If the determination from method step 102 results in at least one outlet product which can be produced industrially in continuous operation, then the operating personnel in the control center can select whether they want to produce this technical potential outlet product or one of these technically possible outlet products in continuous operation, or preferably in a discontinuous mode Rolling plant to be transferred.

Preferably, in step 102, it is not only possible to determine run-out products which can be produced in continuous operation, but also those which are discontinuous in the present case Operation producible outlet products. These are preferably displayed to the operating personnel separately according to continuous and discontinuous operating mode.

If at least some run-off product can be produced industrially in continuous operation, the operator preferably has the choice of whether to maintain the continuous operation of the rolling mill or whether to change the operation to a discontinuous operation. This selection step is represented by method step 103.

If the alternative outlet product or one of the alternative outlet products is to be produced in continuous operation, this is selected accordingly and the selected outlet product is produced in a method step 104. For this purpose, the operation of the finishing train from an operation according to a first pass schedule, which corresponds to the original, first discontinued product, converted to an operation according to a pass schedule, which corresponds to the alternative, second discontinued product. This conversion takes place during operation of the rolling mill, i. during rolling of the rolling stock.

If no alternative run-out product is technically producible in the present deviation in the continuous operation, the operation of the rolling mill is to be converted from a continuous operation into a discontinuous operation in order to avoid rejects. In this case, an automatic point setting in the direction of change to discontinuous operation takes place in method step 103.

In this case, it is determined in a method step 105 which discontinued products are possible in the discontinuous operation of the rolling plant. There is an automatic or manual selection of the discontinued product for discontinuous operation.

Subsequently, the operation of the rolling mill is changed from a continuous to a discontinuous operation, so that the selected outlet product is produced. This is done in a method step 106. The change is made according to the above explanations FIG. 1 ,

If the process deviation has been remedied at a later point in time, it may be possible to switch back to the continuous operation of the rolling plant, where appropriate the same or another, alternative outlet product is produced in continuous operation.

The retention of the outlet product - if this outlet product is technically produced in continuous operation - in the transition from a discontinuous operation to a continuous operation has the advantage that the system throughput for the same outlet product is increased.

Possibly. can also continue to work in batch mode, with different outlet products are produced, which can not be produced in continuous operation under the given boundary conditions.

In the FIG. 3 shown rolling mill 1 has as Walgutzuführeinrichtung a Walzgutwickeleinrichtung 6 '. From this, the wound rolling G, especially hot strip, unwound. The Walzgutzuführung in the rolling mill is thus quasi-continuous. When using multiple Walzgutwickeleinrichtungen for supplying rolling stock G in the rolling mill 1, an endless operation is possible, which can be achieved by the bands of different Walzgutwickeleinrichtungen are connected together, for example by welding.

This as part of FIG. 1 and FIG. 2 set out method can be analogous to FIG. 3 be applied. Between the Walzgutwickeleinrichtung 6 'and a finishing train 2 further units can be provided, which serve a processing of the rolling stock. These are in FIG. 3 not shown for the sake of clarity.

In particular, a separating device 7 is provided between the rolling stock winding device 6 'and the finishing train 2, which serves in the event of a process deviation from a desired operation of a continuous operation in a discontinuous operation of the system.

It is also true for this embodiment that when a deviation from the scheduled operation is detected, it is first attempted to convert preferably the previous discontinued product A into a new outlet product A * that is also commercially viable and can be produced in continuous operation. If this is not possible, the continuous operation of the rolling plant is transferred to a discontinuous operation and a desired outlet product is then produced.

The separating device 7 allows the cutting of the rolling stock G and is thus for the transition from continuous operation in the discontinuous operation of the rolling mill 1 of high importance. Preferably, the separating device 7 between Walzgutwickeleinrichtung 6 'and finishing mill 2 is arranged.

For severing the rolling stock G, the separating device 7 is controlled accordingly by the control and / or regulating device 8 prepared for carrying out the method. Furthermore, for example, the processing speed of the rolling stock G before the separating device 7 is temporarily slowed down by the control and / or regulating device 8, such as the unwinding speed of the rolling stock winding device 6 'and the processing speed after the separating device 7 is temporarily increased. In particular, the rolling speed of the finishing line 2 arranged downstream of the separating device 7 in the mass flow direction can be increased for this purpose.

Incidentally, the too FIG. 1 and FIG. 2 made explanations FIG. 3 be transmitted analogously. It is important to take into account that the pouring device 6 from FIG. 1 in FIG. 3 is replaced by the Walzgutwickeleinrichtung 6 '. Furthermore, there is, for example, in systems according to FIG. 3 usually no high reduction mill, since the temperatures reached of the rolling stock G, which would allow a high reduction, in rolling mills according to FIG. 3 usually can not be achieved.

Claims (12)

1. Method for manufacturing rolling stock (G) rolled in a rolling train (2) of a rolling mill (1), especially a casting rolling mill, whereby the rolling mill (1) is operated continuously, with the rolling stock being embodied during the planned operation in one piece from a device (6, 6') feeding the rolling stock to the rolling mill , especially a casting device (6) and/or a rolling stock winding device (6') at least up to a finishing rolling train (2) arranged downstream from the rolling stock feed device (6, 6') in the mass flow direction, with the rolling stock (G) entering the finishing rolling train (2) continuously and being rolled in the finishing rolling train (2) continuously into a first outflow product (A), whereby the operation of the rolling mill (1) is monitored for occurrence of a deviation from the planned operation of the rolling mill (1) influencing the rolling process, characterised in that, upon occurrence of the deviation, a check (100, 101) is made as to whether, in the light of the deviation, a second outflow product (A*) differing from the first is able to be manufactured (102) in continuous operation, whereby for non-manufacturability of the second outflow product the operation of the rolling mill (1) is changed from continuous operation of the rolling mill (1) into discontinuous operation (106).
2. Method according to claim 1,
   characterised in that, if the second outflow product (A*) is able to be manufactured (102), a choice is made (103) as to whether the second outflow product will be manufactured (104) or the operation of the rolling mill (1) is changed to discontinuous operation (105).
3. Method according to claim 1 or 2,
   characterised in that, if the second outflow product (A*) is able to be manufactured the second outflow product (A*) will be manufactured in continuous operation (104) of the rolling mill (1).
4. Method according to one of the previous claims, characterised in that a check is made (105) as to whether, in discontinuous operation, the first outflow product (A) and/or a further second outflow product is able to be manufactured.
5. Method according to one of the previous claims, characterised in that the change (106) to discontinuous operation is made by separation, especially cutting, of the rolling stock (G) between the rolling stock feed device (6, 6'), especially the casting device (6) or the rolling stock winding device (6') and the finishing rolling train (2).
6. Method according to one of the previous claims, characterised in that, on changing (106) operation into discontinuous operation at least for a short time a speed of the rolling stock (G) is reduced by means of the rolling stock feed device (6, 6'), especially a casting speed of the casting device (6) or a winding speed of a rolling stock winding device (6') and/or a rolling speed of the finishing rolling train (2) is increased.
7. Method according to one of the previous claims, characterised in that, for increasing a distance between the rolling stock (G) entering the finishing rolling train (2) one after the other, the rolling stock is cut at least twice between the rolling stock feed device (6, 6'), especially the casting device (6) or the rolling stock winding device, and the finishing rolling train (2), whereby a part of the rolling stock (G) delimited by the first and the second cut is removed from the rolling process.
8. Method according to one of the previous claims, characterised in that, if the second outflow product is not able to be manufactured, the operation of the rolling mill (1) is changed (106) from continuous operation of the rolling mill (1) into discontinuous operation during the rolling of rolling stock (G).
9. Control and/or regulation device (8) for a rolling mill (1) for manufacturing rolled rolling stock (G) with a machine-readable program code (9) which has control commands which, when executed, cause the control and/or regulation device (8) to carry out the method according to one of claims 1 to 8.
10. Rolling mill (1), especially combined casting and rolling mill, for manufacturing rolled rolling stock (G) with a device (6, 6') for feeding rolling stock (G) into the rolling mill (1), especially a casting device (6) for continuous casting of rolling stock (G) or a rolling stock winding device (6'), with a finishing rolling train (2) for rolling stock (G) to be rolled with a separation device (7) arranged in the mass flow direction between rolling stock feed device (6, 6') and finishing rolling train (2) for cutting rolling stock (G), with a control and/or regulation device (8) according to claim 9, whereby the finishing rolling train (2), the rolling stock feed device (6, 6') and the separation device (7) are actively connected to the control and/or regulation device (8).
11. Machine-readable program code (9) for a control and/or regulation device (8) for a rolling mill (1), whereby the program code (9) features control commands which cause the control and/or regulation device (8) to carry out the method according to one of claims 1 to 8.
12. Storage medium (10) with a machine-readable program code (9) according to claim 11 stored thereon.

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