JP2010517787A - Thermomechanically controlled rolling method and apparatus for metal plates and strips - Google Patents

Abstract

Method for thermo-mechanical controlled rolling of metal slabs to plates or strips, in which for two successively rolled slabs the time gap between the starts of their rolling phases 1 is always smaller than the sum of the duration of all rolling phases and all cooling phases of the rolling pattern, and in which during rolling the batch it occurs on at least one rolling mill stand several times that a rolling phase applied to one slab or plate or strip is succeeded by a different rolling phase applied on another slab or plate or strip. In the apparatus for thermo-mechanical rolling according to that method the number of storage positions is half the interleave depth of the performed rolling pattern rounded up to an integer.

Description

  The present invention relates generally to the field of thermomechanically controlled rolling of metal sheets and strips in rolling mills, and more particularly to a technique known as interleaving and an apparatus for implementing the technique.

  Thermomechanically controlled rolling is associated with rolling metal slabs, plates or strips at specific temperatures to obtain specific metallurgical microstructures and mechanical properties. It typically includes two or more rolling stages. Between two successive rolling stages, the plate or strip can be cooled during the cooling stage and lowered to the specific temperature desired in the next rolling stage. For example, if two rolling stages are initially performed, multiple rolling passes are applied at high temperatures during rolling stage 1 and the resulting plate or strip is in the cooling stage before rolling stage 2 begins. It can be cooled to a specific temperature. Similarly, in the case of three stages, two cooling stages are performed, cooling stage 1 is performed between rolling stage 1 and rolling stage 2, and cooling stage 2 is performed between rolling stage 2 and rolling stage 3. The

  In order to improve the throughput of thermomechanically controlled rolling, interleaving techniques are employed. It consists of simultaneously processing one or more metal slabs, plates or strips in a rolling mill.

  If the interleaving technique is not adopted for thermomechanically controlled rolling, the rolling of the plate or strip is not completed. That is, rolling a plate or strip must complete all rolling steps before another rolling, that is, a new slab can begin rolling. While the plate or strip is cooled during the cooling phase between the two rolling stages, the rolling mill is completely idle. In contrast, according to the interleaving technique, rolling of a new slab is started while the plate or strip has already finished the rolling stage 1 and is being cooled in the cooling stage. This ensures that the rolling mill does not always run completely during the cooling phase of one plate or plate, in order to process another plate or strip during that time. Here, the processing capacity of the rolling mill is improved by means of interleave technology. Interleave depth is a characteristic parameter for thermomechanically controlled rolling by interleaving techniques. In order to obtain a unique product by thermomechanically controlled rolling via interleaving techniques, a unique rolling pattern is applied to each of the batches being processed. The rolling pattern is performed in the order and duration of all rolling and cooling steps, which are applied when processing the slab into plates or strips. Such a rolling pattern includes at least two rolling stages and a cooling stage between those successive rolling stages. For rolling patterns with unequal duration rolling stages, the interleave depth is obtained by rounding down the minimum of the group of numbers consisting of the duration of the cooling stage and the duration of the longest rolling stage to a natural number. Defined as an integer. For rolling patterns with uniform duration rolling stages, the interleaving depth is expressed as an integer obtained by rounding down the minimum of the group of numbers consisting of the duration of the cooling stage and the duration of the rolling stage to a natural number. Defined.

  For example, for a group of numbers consisting of 2.30, 1.98 and 1.95, the minimum value is 1.95. The integer with 1.95 truncated is 1. Here, the interleave depth is 1. When the minimum value is a natural number, the integer that defines the interleave depth is the same as the natural number.

  For example, for two rolling stages with equal duration rolling stages, the interleave depth is defined as an integer that is a natural number by rounding down the quotient of the cooling stage duration and the rolling stage duration.

  In the most common method for interleaving, plates or strips are stored on the same roller table used for rolling during the cooling phase.

  Such techniques are illustrated in FIGS. 1-6, which relate to the rolling stage of two plates with two interleave depths, and show a simplified plan view of a single rolling stand. Yes. The first slab to be rolled is heated in the furnace 1 and then discharged onto the roller table 2 and transferred to the rolling stand 3. In the rolling stand 3, a plurality of reciprocating rolling passes are executed until the rolling stage 1 is completed. The plate 5 obtained there is then lowered from the roller table 4 to the storage position 6. In the storage position 6, the plate 5 is stored during the cooling phase. FIG. 1 shows the plate 5 in the storage position 6.

  Thereafter, the second slab is discharged from the furnace 1 and rolled until the rolling stage 1 is completed in the same manner as the first slab. The plate 7 thus obtained is then lowered from the roller table 4 to the storage position 8. In the storage position 8, the plate 7 is stored during the cooling phase. FIG. 2 shows the plate 7 in the storage position 8.

  Thereafter, the third slab is discharged from the furnace 1 and rolling is performed until the rolling stage 1 is completed and the plate 9 is completed. FIG. 3 shows the plate 9 after completion of the rolling stage 1.

  All three plates are then returned to the entrance side of the rolling stand 3 by means of the roller tables 4 and 2, and a rolling stage 2 having a multi-pass rolling stage is started with respect to the plate 5. FIG. 4 shows the position of the plates 5, 7 and 9 in the starting letter of rolling stage 2 with respect to the plate 5.

  FIG. 5 is a view showing a state after finishing the second rolling pass from the end in the rolling stage 2 of the plate 5. FIG. 6 is a view showing a state after finishing the last rolling pass of the plate 5.

  The disadvantage of storing the plates on the same roller table used for rolling during the cooling phase is the additional length of the table and the structure of the roller table, which makes it possible to use interleaving techniques. No length is required compared to thermomechanically controlled rolling. In the example shown in FIG. 5, the interleave depth is 2, and the roller table 2 on the entrance side of the rolling stand 3 has the length of the plate after the rolling stage 1 and the second rolling from the end of the rolling stage 2. It is necessary to have a length equal to at least twice the length of the plate after the pass. The roller table 4 on the exit side of the rolling stand 3 needs to have a length equal to at least the larger of the following two numerical values. It is either three times the length of the plate after rolling stage 1 or the length of the plate after rolling stage 2.

  Modern board quality grades often require very long cooling times, where the interleave depth can be 12 or greater. In common with the examples shown in FIGS. 1-6, for a 12 interleave depth, the roller table on the entrance side of the rolling stand is at least 12 times the length of the plate after rolling stage 1 and rolled. It requires a length equal to the length of the plate after the second rolling pass from the end of stage 2 plus. 12 interleave depths with about 10 m length after rolling stage 1, 48 m length after the last rolling pass of rolling stage 2 and 50 m long plate after rolling stage 2 For the transport, a roller table having a length of about 170 m on the entrance side of the rolling stand and a length of 120 m on the exit side is required. On the other hand, if thermo-mechanically controlled rolling is performed without using an interleaving technique, a table of about 50 m on both sides is sufficient.

  A solution for storing the plate during the cooling phase in a shorter full length rolling mill is found in US Pat. No. 6,057,096, which discloses a laterally moving roller table that can be laterally moved outside the rolling line. ing. At the start of the cooling phase, the plate is placed on one of the laterally moving roller tables and then laterally moved to an offline storage position. This lateral movement of the transverse table either transfers the already cooled plate to the next rolling stage in the rolling line or returns an empty transverse roller table to the rolling line. . Because the plates are stored in side-by-side rather than low positions, the length of the roller table and structure required is significantly reduced. However, responsive to the required 12 interleaving depths requires 12 laterally moving roller tables and occupies a very large laterally moving area that does not fit within a standard rolling mill structure.

  Another known solution to the problem of storing a large number of plates during the cooling phase is that one or more storage roller tables arranged parallel to the roller table of the rolling line, the rolling line and the holding line. For use with transfer devices that move plates between. After the rolling stage 1 is completed, the transfer device transfers the plate onto the storage roller table. When the cooling phase is complete, the plate is returned to the rolling line for rolling phase 2.

  However, the storage roller table parallel to the roller table of the rolling line still requires a length of around 120 m in order to carry 12 interleaved depths according to the above example. Using two or more storage tables with transfer devices to reduce the length of each individual table increases equipment complexity and requires more side space.

  Another known solution to the problem of storing a large number of plates during the cooling phase is to lift the plates on the roller table of the rolling line. This is similar to using a laterally moving roller table, except that the transport is vertical instead of horizontal. Furthermore, the transfer of many interleave depths increases the complexity of the required equipment, while at the same time increasing the dimensions of the mill housing.

  Another disadvantage of the prior art interleaving method is that the furnace slab discharge pattern is not ideal.

  FIG. 7 schematically shows a time diagram of a rolling pattern of an example of two-stage rolling according to the prior art interleaving method, which interleaves two equal duration rolling stages and the duration of the rolling stage. One cooling stage equal to twice the length is carried out in a rolling mill with one rolling stand. The time diagram shows the relationship between rolling and cooling steps applied to different slabs over time, and plates or strips are generated from these slabs.

  The processed batch is 6 slabs and plates 1-6 are produced. According to the rolling pattern of FIG. 7 for the first three slabs, rolling stage 1 starts within a time break equal to twice the duration of the rolling stage. After the start of the rolling stage 1 of the third slab, the separation of the time of the cooling stage and the rolling stage 2, which is the sum of the stage durations of rolling 1, elapses until the rolling stage 1 of the fourth slab starts. . That means that the furnace must discharge the first three slabs within a short time interval and then wait for a long time until the next three slabs are discharged within a short time interval. . Here, the discharge pattern of the furnace shown in FIG. 7 consists of three discharges between the durations of the rolling stages, and the duration of the rolling stage is the gap between the durations of the four rolling stages while the slab is not discharged. And then three slabs are discharged between the duration of the rolling stage. For a rolling stage with 12 interleave depths and an equal duration, the furnace discharge pattern consists of 13 slab discharges between the rolling stage durations, and after the rolling stage duration, The duration gap continues.

  The discharge of a large number of groups of slabs in the short gaps that lead to long gaps causes slab temperature control and furnace temperature control problems. Due to irregular and uneven furnace discharge, some slabs will stay in the furnace longer than others, and the uneven residence time will cause different slabs to have different temperatures, thereby It may have adverse effects on metallurgical properties and production.

British Patent No. 1396946

  It is an object of the present invention to provide a thermomechanically controlled rolling method and apparatus thereof by interleaving technology, which enables a more uniform furnace discharge pattern compared to the prior art, and Requires less space and equipment.

  This object is solved by a thermomechanically controlled rolling method for rolling a batch of metal slabs into plates or strips on a rolling mill. The rolling mill comprises at least one rolling stand with a rolling pattern comprising at least two rolling stages having at least one rolling pass and a cooling stage between the successive rolling stages, each rolling pattern being Applied to batch. The method involves rolling a batch applied to one slab, plate or strip in at least one rolling stand during a batch rolling followed by different rolling steps applied to another slab, plate or strip. For two slabs that happened multiple times and rolled in succession, the time gap between the start of those rolling stages is more than the sum of the duration of the rolling stage of the rolling pattern and all cooling stages It is characterized by being always shorter.

  This method can be applied to furnace discharge patterns, which allow for a more uniform discharge than the prior art. As can be seen in FIG. 7, in the prior art, the time gap between each rolling stage 1 of two slabs that are continuously rolled is a rolling pattern when a batch is processed that is greater than the interleave depth of the rolling pattern. Equal to the sum of the duration of at least one rolling stage and cooling stage. Since the time gap between each rolling stage 1 of two slabs rolled in succession controls the discharge of the slab from the furnace, a smaller time gap allows for a more even furnace discharge pattern.

  Preferably, at least one plate or strip is present in the cooling stage after the first rolling stage of the first batch of slabs is completed by the start of the last rolling stage of the last plate or strip.

More preferably, this is the case for batches larger than the interleave depth plus 1 and the interleave depth of the rolling pattern of the method is
For rolling patterns with unequal duration rolling stages, an integer obtained by rounding down the minimum of a group of numbers consisting of the quotient of the duration of the cooling stage and the duration of the longest rolling stage to a natural number For rolling patterns with uniform duration rolling stages, the minimum value of the group of numbers consisting of the duration of the cooling stage and the duration of the longest rolling stage shall be rounded down to a natural number. Defined as an integer obtained by.

In one embodiment of the invention, there are two rolling stages, rolling stage 1 and rolling stage 2, which are separated by one cooling stage. It is preferably a two-stage thermomechanically controlled rolling method, in a rolling pattern having an equal number of interleave depths and an equal duration rolling stage, the duration of the cooling stage is
-An integral multiple of the rolling stage duration, and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is accompanied by a rolling pattern that matches the sum of twice the duration of one rolling stage and the other processing times. Yes. In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of one rolling stage.

In the formula, it is expressed as follows.
Tg ≦ (2 · Drp) + Rt
Cpd = (Wn · Drp) + Rt
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Drp ... duration of rolling stage Rt ... other processing time Cpd ... duration of cooling stage Wn is a natural number that is an integer value of (Cpd / Drp).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

For a two-stage thermomechanically controlled rolling method, preferably, in a rolling pattern having an equal number of interleaving depths and a rolling stage of unequal duration, the duration of the cooling stage is:
-An integral multiple of the duration of the longest rolling stage; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is accompanied by a rolling pattern that matches the sum of twice the duration of the longest rolling stage and other processing times. Yes. In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of the longest rolling stage.

In the formula, it is expressed as follows.
Tg ≦ (2 · Dlp) + Rt
Cpd = (Wn · Dlp) + Rt
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Dlp ... Duration of the longest rolling stage Rt ... Other processing time Cpd ... Cooling stage It is a natural number that is an integer value of duration Wn... (Cpd / Dlp).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

For a two-stage thermomechanically controlled rolling method, preferably, in a rolling pattern having an unequal number of interleave depths and a rolling stage of equal duration, the duration of the cooling stage is:
-An integral multiple of the rolling stage duration, and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is accompanied by a rolling pattern that matches the sum of three times the duration of one rolling stage and the other processing times. Yes. In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of one rolling stage.

In the formula, it is expressed as follows.
Tg ≦ (3 · Drp) + Rt
Cpd = (Wn · Drp) + Rt
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Drp ... duration of rolling stage Rt ... other processing time Cpd ... duration of cooling stage Wn is a natural number that is an integer value of (Cpd / Drp).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

For a two-stage thermomechanically controlled rolling method, preferably, in a rolling pattern having an unequal number of interleave depths and an unequal duration rolling stage, the duration of the cooling stage is:
-An integral multiple of the duration of the longest rolling stage; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is accompanied by a rolling pattern that matches the sum of three times the duration of the longest rolling stage and other processing times. Yes. In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of the longest rolling stage.

In the formula, it is expressed as follows.
Tg ≦ (3 · Dlp) + Rt
Cpd = (Wn · Dlp) + Rt
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Dlp ... Duration of the longest rolling stage Rt ... Other processing time Cpd ... Cooling stage It is a natural number that is an integer value of duration Wn... (Cpd / Dlp).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

For a two-stage thermomechanically controlled rolling method, preferably, in a rolling pattern having a uniform duration rolling stage, the duration of the cooling stage is:
-An integral multiple of the duration of the rolling stage, and
-Other processing time,
Equal to the sum of
After completion of the rolling of the first batch of plates or strips, during the rolling of batches at a predetermined interval, rolling stage 1 is replaced by rolling stage 2, where the predetermined interval is the number of interleaving depths for the duration of the rolling stage. It corresponds to the sum of the double time and the other processing time.

  In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of the longest rolling stage.

In the formula, it is expressed as follows.
Int ≦ (Id · Drp) + Rt
Cpd = (Wn · Drp) + Rt
here,
Int: The interval between rolling stage 1 and rolling stage 2 during batch rolling Id: Interleave depth Drp: Duration of rolling stage Rt: Other processing time Cpd: Cooling Stage duration Wn... (Cpd / Drp) is a natural number that is an integer value.

For a two-stage thermomechanically controlled rolling method with a rolling pattern having a rolling stage with an uneven duration of the rolling stage, the duration of the cooling stage is
-An integral multiple of the duration of the longest rolling stage, and
-Other processing time,
Equal to the sum of
Preferably, after completion of rolling of the first batch of plates or strips, during the rolling of a batch of predetermined intervals, said rolling stage 1 is replaced by rolling stage 2 and the predetermined interval is the duration of the longest rolling stage. It corresponds to the sum of the time of the number of times of interleaving depth times the above and the other processing time.

  In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the duration of the longest rolling stage.

In the formula, it is expressed as follows.
Int ≦ (Id · Dlp) + Rt
Cpd = (Wn · Drp) + Rt
here,
Int: Between the rolling stage 1 and the rolling stage 2 during the batch rolling Id: Interleave depth Dlp: Longest rolling stage duration Rt: Other processing time Cpd ... -Duration of the cooling stage Wn ... is a natural number that is an integer value of (Cpd / Drp).

Rolling with an uneven duration of the rolling stage and a duration of the cooling stage equal to, or longer than, or a natural number of the sum of the durations of both rolling stages Regarding a two-stage thermomechanically controlled rolling method with a pattern,
Preferably, after the rolling of the first plate or strip batch is completed, rolling stage 1 is performed as often as rolling stage 2 for a time interval equal to the duration of the cooling stage.

In this case, the natural number is an integer value of the quotient of the duration of the cooling stage and the sum of the durations of both rolling stages. That is, in the formula:
Drp1 ... duration of rolling stage 1 Drp2 ... duration of rolling stage 2 Cpd ... duration of cooling stage Wn ... is a natural number that is an integer value of (Cpd / (Drp1 + Drp2)).

For a two-stage thermomechanically controlled rolling method with a rolling pattern having an uneven duration of the rolling stage and a duration of the cooling stage, the duration of the cooling stage is:
The duration of both rolling stages, and the duration of either rolling stage 1 or rolling stage 2,
Equal to or longer than the sum, or equal to or longer than the natural number of those sums,
Preferably, during the duration of the cooling phase, the length of time during which rolling phase 1 is carried out is equal to the duration of rolling phase 2 plus 1 unit time or minus 1 unit time .

In this case, the natural number is an integer value of the quotient of the duration of the cooling stage, the duration of both rolling stages, and the sum of the duration of rolling stage 1 or rolling stage 2. That is, in the formula:
Drp1 ... duration of rolling stage 1 Drp2 ... duration of rolling stage 2 Cpd ... duration of cooling stage Wn ... (Cpd / ((Drp1 + Drp2) + (Drp1 or Drp2))) It is a natural number that is a numerical value.

  In another embodiment of the present invention, the number of rolling stages is three, rolling stage 1, rolling stage 2 and rolling stage 3, and rolling stage 1 and rolling stage 2 are separated by cooling stage 1, Rolling stage 2 and rolling stage 3 are separated in cooling stage 2.

For a suitably three-stage thermomechanically controlled rolling method, in the rolling pattern, the duration of the cooling stage 1 is
-A time that is a natural number A times the sum of the durations of the three rolling stages; and-the remaining processing time 1,
And the duration of the cooling time 2 is
-A time that is a natural number B times the sum of the durations of the three rolling stages; and-the remaining processing time 2,
Equal to the sum of
For the slab that is rolled continuously, the maximum time gap between the start of each rolling stage 1 is either the duration of the three rolling stages, the remaining processing time 1 or the remaining processing time 2 It matches the sum of the longer time.

  In this case, the natural number A is an integer value of the quotient of the duration of the cooling stage 1 and the sum of the durations of all three rolling stages, and the natural number B is the duration of the cooling stage 2 and all three rolling stages. It is an integer value of the quotient with the sum of durations.

In the formula, it is expressed as follows.
Tg ≦ Sdr + (Rt1 or Rt2, whichever is longer)
Cpd1 = (WnA · Sdr) + Rt1
Cpd2 = (WnB · Sdr) + Rt2
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Drp1 ... duration of rolling stage 1 Drp2 ... duration of rolling stage 2 Drp3 ... rolling stage 3 duration Rt1... Other processing time 1
Rt2 Other processing time 2
Cpd1 ... duration of cooling stage 1 Cpd2 ... duration of cooling stage 2 Sdr ... sum of durations of all three rolling stages, (Drp1 + Drp2 + Drp3)
WnA is a natural number that is an integer value of (Cpd1 / Sdr) WnB is a natural number that is an integer value of (Cpd2 / Sdr).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

For a suitably three-stage thermomechanically controlled rolling method, in the rolling pattern, the duration of the cooling stage 1 is
-A time that is a natural number C times the sum of the duration of the three rolling stages and the duration of the rolling stage 3, and-the remaining processing time 3,
And the duration of the cooling time 2 is
-A time that is a natural number D times the sum of the duration of the three rolling stages and the duration of rolling stage 1, and
-Remaining processing time 4,
Equal to the sum of
For the slab that is rolled continuously, the maximum time gap between the start of each rolling stage 1 is the longer of the duration of the three rolling stages, the remaining processing time 3 and the remaining processing time Is equal to the sum of

  In this case, the natural number C is an integer value of the quotient of the duration of the rejection stage 1 and the sum of the durations of all three rolling stages and the duration of the rolling stage 3, and the natural number D is the duration of the cooling stage 2 And the integer value of the quotient of the sum of the duration of all three rolling stages and the duration of rolling stage 1.

In the formula, it is expressed as follows.
Tg ≦ Sdr + (Rt3 and Rt4, whichever is longer)
Cpd1 = (WnC · (Sdr + Drp3)) + Rt3
Cpd2 = (WnD · (Sdr + Drp4)) + Rt4
here,
Tg: Maximum time gap between the start of each rolling stage 1 of continuously rolled slabs Drp1 ... duration of rolling stage 1 Drp2 ... duration of rolling stage 2 Drp3 ... rolling stage 3 duration Rt3 ... other processing time 3
Rt4 ... Other processing time 4
Cpd1 ... duration of cooling stage 1 Cpd2 ... duration of cooling stage 2 Sdr ... sum of durations of all three rolling stages, (Drp1 + Drp2 + Drp3)
WnC is a natural number that is an integer value of (Cpd1 / (Sdr + Drp3)) WnD is a natural number that is an integer value of (Cpd2 / (Sdr + Drp4)).

  By limiting the maximum time gap between the start of each rolling stage 1 of continuously rolled slabs to this value, a more even furnace discharge is possible.

With regard to the preferred three-stage thermomechanical controlled rolling method, during the batch rolling, from the completion of the rolling of the first plate or strip batch to the start of the rolling step 3 of the last plate or strip,
The rolling stage 2 is always followed by the rolling stage 2, the rolling stage 3 is always followed by the rolling stage 3, and the rolling stage 3 is always followed by the rolling stage 1.

  This pattern allows for very even furnace discharge.

With regard to the preferred three-stage thermomechanical controlled rolling method, during the batch rolling, from the completion of the rolling of the first plate or strip batch to the start of the last plate or strip rolling phase 3,
The rolling stage 3 is always followed by the rolling stage 1, the rolling stage 2 is always followed by the rolling stage 2, and the rolling stage 1 is always followed by the rolling stage 2.

  This pattern allows for very even furnace discharge.

  With regard to the rolling method, preferably with a three-stage thermomechanical control, rolling stage 1, rolling stage 2 and rolling stage 3 are carried out with equal frequency during a time interval equal to the duration of cooling stage 1. In another embodiment of the three-stage thermomechanically controlled rolling method, rolling stage 1, rolling stage 2 and rolling stage 3 are performed at unequal frequencies during a time interval equal to the duration of cooling stage 1. The

More preferably, during a time interval equal to the duration of cooling stage 1, the number of rolling stages 3 carried out is greater than the number of rolling stages 1 carried out and the number of rolling stages 2 carried out,
During a period of time equal to the duration of the cooling stage 2, the number of rolling stages 1 carried out is greater than the number of rolling stages 2 carried out and the number of rolling stages 3 carried out.

  More preferably, after completion of the rolling stage following the cooling stage, the product plate or strip is transferred from the rolling line of the rolling mill to a storage position outside the rolling position by at least one lateral movement facility, Thereafter, the plate or strip is transferred from the storage position to the rolling line by a lateral movement facility after completion of the cooling phase.

  This reduces the length of the rolling line required to carry out the interleaving process because the plate or strip does not remain on the rolling line during the cooling phase.

  In a particularly preferred embodiment, during the batch rolling, one plate or strip is transferred to the storage position or rolling line by the same lateral movement equipment while another plate or strip is moved to the rolling line or storage position. It will be transferred at least once.

  In this case, the two plates or strips are transferred by one movement of the lateral movement facility. This reduces the number of movements of the lateral movement equipment required for rolling the batch, resulting in reduced management requirements and reduced equipment consumption. Furthermore, the necessary lateral movement facilities are reduced.

The object of the present invention is a device for carrying out the thermomechanically controlled rolling method according to any one of claims 1 to 22, which device comprises:
An apparatus comprising at least one rolling stand, a rolling line, a storage position outside the rolling line, and at least one lateral movement facility for moving a plate or strip from the rolling line to the storage position In
The number of storage positions is to solve the problem by an apparatus characterized in that it is half the interleave depth of the rolling pattern to be implemented, rounded up to a natural number.

  Compared to the prior art, the number of storage positions required for the rolling pattern of the interleave method is equal to the interleaving depth of the rolling pattern, but according to the invention, a smaller number of storage positions is required. This results in less space and adjustment required, and a simpler device for thermomechanically controlled rolling.

  The lateral movement facility may be, for example, a lateral movement roller table, a lift type roller table, or a crane. The storage position may be located, for example, on one or more lateral movement tables, lift roller tables or storage roller tables, which may be parallel to the rolling line. In the case of several parallel storage roller tables, these may be staggered.

  In a preferred embodiment, the at least one lateral movement facility transfers one plate or strip to the rolling line or storage position and transfers another plate or strip to the storage position or rolling line.

  This is the case, for example, in the case of a laterally moving roller table, transferring one plate or strip into the rolling line while simultaneously transferring another plate or strip to the storage position.

  The invention will now be described by way of example only and with reference to the accompanying drawings.

FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 shows a course of an interleaving process with a prior art interleaving depth of 2 for two-stage rolling, showing a simplified planning diagram with a single rolling stand. FIG. 2 schematically shows a time diagram of a rolling pattern of an embodiment of an interleaving method having two interleaving depths of the prior art for two-stage rolling and a rolling stage of equal duration; It is twice as long and is due to a rolling mill with a single rolling stand. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. Fig. 4 shows a simplified plan view of a single rolling stand according to an embodiment of the invention, comprising two laterally moving roller tables with two laterally moving positions, 4 interleaved depths and equal duration A two-stage rolling method having the following rolling stages is performed. It is the figure which showed the time diagram of the rolling pattern described in FIGS. FIG. 4 is a diagram showing a time diagram of a rolling pattern in the prior art relating to an interleave depth of 4; FIG. 4 shows a time diagram of a two-stage rolling pattern having two interleave depths and a uniform length of rolling stages according to the present invention. FIG. 2 shows a time diagram of a two-stage rolling pattern according to the prior art with different duration rolling stages and one interleaving depth. FIG. 4 shows a time diagram of a two-stage rolling pattern according to the present invention with different duration rolling stages and one interleave depth. FIG. 3 shows a time diagram of a two-stage rolling pattern according to the prior art with a three interleaving depth and rolling stages of different durations. FIG. 3 shows a time diagram of a two-stage rolling pattern according to the present invention having an interleave depth of 3 and rolling stages of different durations. FIG. 4 shows a time diagram of a three-stage rolling pattern according to the present invention having an interleaving depth of 2 and rolling stages of different durations.

  FIG. 7 shows two rolling stages and one cooling stage. In FIG. 7, the order of rolling stage 1 and rolling stage 2 is 1-1-1-2-2-2-1-1-1-2-2-2. Here, the time gap between the start of two successive rolled slab rolling stages 1 occurs while three occurrences of one type of rolling stage being taken over by another type of rolling stage are: It is not always shorter than the sum of the durations of all rolling stages and all cooling stages. The time gap between the start of rolling stage 1 of slab number 3 and the start of rolling stage 1 of slab number 4 is equal to the sum of the durations of the two rolling stages and the cooling stage of the rolling pattern.

  FIG. 8 shows a simplified plan view of a rolling device for thermo-mechanically controlled rolling, a rolling line consisting of one rolling stand 3, roller tables 2 and 4, heating the slab before rolling And a laterally moving roller table 10 and 11, and the laterally moving roller table is disposed on the exit side of the rolling stand 3 in the roller table 4. FIG. 8 shows the time when the first slab, which is a plate 12 after the rolling stage 1 as a batch of processing, is transferred onto the laterally moving roller table 10, and the laterally moving roller table 10 is in the lowered position. It is in. Thereafter, the lateral movement roller table 10 moves to the raised position, and the plate 12 is removed from the rolling line and transferred to the storage position. FIG. 9 shows the plate 12 in the retracted position. When a period of time equal to the continuation of one rolling stage has elapsed since the end of rolling stage 1 of the plate 12, the rolling stage 1 of the second slab begins. The resulting plate 13 is transferred onto the laterally moving roller table 11 in the lowered position. FIG. 10 shows the plate 13 on the laterally moving roller table 11 in the lowered position.

  Thereafter, the lateral movement roller table 11 moves to the ascending position, and the plate 13 is removed from the rolling line and transferred to the storage position. FIG. 11 shows the plate 13 in the retracted position. When a time interval equal to the continuation of one rolling stage has elapsed since the end of rolling stage 1 of plate 13, rolling stage 1 of the third slab starts. The resulting plate 14 is transferred onto the laterally moving roller table 10 in the lowered position. FIG. 12 shows the plate 14 on the laterally moving roller table 10 in the lowered position. Thereafter, the lateral movement roller table 10 moves to the lowered position, removes the plate 14 from the rolling line, and transfers it to the storage position. At the same time, the plate 12 is transferred from the storage position to the rolling line. FIG. 13 shows the plates 12 and 14 on the laterally moving roller table 10 in the lowered position. Thereafter, the rolling stage 2 of the plate 12 starts. FIG. 14 shows the plate 12 after the rolling stage 2 has been completed. As also shown in FIG. 14, when the plate 12 passes through the rolling mill, the rolling stage 1 of the fourth slab 15 starts and becomes the plate 16. When the plate 16 completes the rolling stage 1, it is moved to the laterally moving roller table 11 in the raised position. FIG. 15 shows the plate 16 on the laterally moving roller table 11 in the raised position. Thereafter, the lateral movement roller table 11 moves to the lowered position, removes the plate 16 from the rolling line, and transfers it to the storage position. At the same time, the plate 13 is transferred from the storage position to the rolling line. FIG. 16 shows the plates 13 and 16 on the laterally moving roller table 10 in the lowered position. Thereafter, the rolling stage 2 of the plate 13 starts.

  If the batch in which the metal slab is processed is greater than 4, as shown in FIG. 14, the rolling of another slab is started when the plate 13 passes the rolling mill and the situation is effectively repeated. The resulting plate is processed as in FIGS. Moreover, the pattern shown by FIGS. 14-16 is repeated similarly about each slab.

  In this embodiment having an interleave depth of 4 as schematically shown in FIGS. 8-16, only two laterally moving roller tables are required.

  FIG. 17 shows a time diagram of the rolling pattern described in FIGS. For comparison, a rolling diagram time diagram of a prior art rolling pattern for an interleave depth of 4 is shown in FIG.

  FIG. 17 shows two rolling stages and one cooling stage. In FIG. 17, the order of rolling stage 1 and rolling stage 2 is 1-1-1-2-1-2-1-2-1-2-2. Here, it occurs seven times that one type of rolling stage is taken over by another type of rolling stage. The disclosed time interval of rolling stage 1 between two consecutive rolled slabs is always shorter than the sum of the duration of rolling stage 1, rolling stage 2 and cooling stage of the rolling pattern.

  According to FIG. 18, for four interleaving depths that move alternately, a total of four laterally moving roller tables are required, and four plates are removed from the rolling line before the start of rolling stage 1 of the fifth slab. Removed. Here, the present invention reduces the number of laterally moving roller tables required. FIG. 18 shows two rolling stages and one cooling stage. In FIG. 18, the order of rolling stage 1 and rolling stage 2 is 1-1-1-1-1-2-2-2-2-2-1. Here, the time interval disclosed for the rolling stage 1 between two consecutive rolled slabs occurs twice, while one type of rolling stage is taken over twice by another type of rolling stage. Is not always shorter than the sum of the duration of all rolling and cooling stages. Between the start of rolling stage 1 of slab number 5 and the start of rolling stage 1 of slab number 6 there is a time gap equal to the sum of the durations of the two rolling stages and one cooling stage of the rolling pattern. ing.

  In addition, the present invention schematically illustrated in FIGS. 8-17 reduces the number of traversing roller tables required, which means that the first two transfer one plate simultaneously into the storage position and another This is because all the lateral movement roller tables move after the plate returns to the rolling line.

  Furthermore, the invention outlined in FIGS. 8 to 17 allows even more furnaces to be discharged, which is a new slab rolling stage 1 after completion of the process, ie after the end of one slab rolling stage 1. Because it always starts after a time break equal to the duration of one rolling stage. When the rolling stage 1 starts evenly, the discharge pattern of the furnace can also be made uniform. In the prior art shown in FIG. 18, the first five rolling stages 1 are between the end of the rolling stage 1 of one slab and the beginning of the rolling stage 1 of the slab that has been rolled subsequently. One after another without a time gap, followed by an internal and external time gap between the start of rolling stage 1 of the fifth slab and the beginning of rolling stage 1 of the sixth slab. The long time gap lasts for a time equal to the sum of the measuring times of all rolling stages and cooling stages.

  Here, the advantages of the present invention provide the possibility of using the furnace with a more even discharge pattern compared to the prior art, reduce the number of storage locations required, and from the rolling line Reducing the number of movements of the transfer device for transferring and returning the plate to the storage position.

  While FIGS. 8-17 refer to the two stages of the rolling pattern on a rolling mill with one rolling stand with an interleave depth of 4, the advantages described above involved more rolling stages. It can also be achieved with respect to rolling patterns and with rolling patterns having different interleave depths, as well as with rolling mills with one or more rolling stands.

  A two stage rolling pattern according to the present invention having three interleave depths and equal length rolling stages is shown in the time diagram of FIG. In the prior art interleave pattern for 3 interleave depths, the maximum time gap between the start of successive rolling stages 1 is a break length of time equal to the duration of 3 rolling stages, The maximum time gap is equal to the duration of 5 rolling stages. Furthermore, for the rolling pattern according to the invention, two lateral movement tables are sufficient, whereas for the prior art rolling pattern, three lateral movement tables are required.

  Another advantage of the present invention is illustrated in FIGS. FIG. 20 shows a prior art time diagram for a two-stage rolling pattern with different rolling stage lengths and one interleave depth. In that rolling pattern, a time equal to 8 times the duration of rolling stage 1 has elapsed, producing two plates, during which time the mill only rolls for a time equal to the duration of 6 rolling stages 1 I do.

  FIG. 21 shows a time diagram for a rolling pattern according to the present invention in which the rolling stage and cooling stage have the same duration, resulting in the same interleave depth as the prior art rolling pattern of FIG. After the rolling stage 2 when the first plate is completed, with the pattern according to the invention of FIG. 21, the rolling mill does not pause and after the plate has passed three times the duration of the rolling stage 1 Produced. Thus, the throughput is improved by 33% over that achieved by the pattern shown in FIG.

  As a matter of fact, operating the rolling mill without pausing can not be achieved, because the cooling time does not necessarily require the duration of several rolling stages, and the plate is moved to and out of the storage position. This is because a certain time is required to move.

  Similar improvements in throughput are shown in FIGS. 22 and 23 for a two-stage rolling pattern having an interleave depth of 3. In these figures, the duration of the cooling phase is 6 times the duration of rolling phase 1 and the duration of rolling phase 2 is twice the duration of rolling phase 1. According to the prior art rolling pattern shown in FIG. 22, four plates are produced in a time equal to 15 times the duration of rolling stage 1, during which time the mill is 12 times the duration of rolling stage 1. Is activated for a time equal to. According to the rolling pattern according to the invention shown in FIG. 23, after the first two plates are completed, the rolling mill is operated continuously and one plate is produced after three times the duration of rolling stage 1 has elapsed. Is done.

  FIG. 24 shows a three-stage rolling pattern with equal duration rolling stages, different duration cooling stages and two interleave depths. After completion of rolling stage 3 of the first plate for this rolling pattern, four plates are produced every period of time equal to 13 times the duration of the rolling stage. The conventional interleave pattern of the prior art produces 3 plates every 11 periods, which results in an 11% improvement in throughput in the interleave pattern according to the present invention.

  In FIGS. 17-24, time diagrams are shown only for small batches to be processed. As the batch grows, the time diagram continues with the same standard rules as shown for the small batch.

2, 4 ... Roller table 3 ... Rolling stands 10, 11 ... Horizontally moving roller tables 12, 13, 14, 16 ... Plate 15 ... Fourth slab

Claims (25)

A method for thermomechanically controlled rolling from a batch of metal slabs into a plate or strip by a rolling mill equipped with at least one rolling stand, wherein the rolling pattern is at least two rolling stages. In a rolling method comprising one rolling pass and a cooling stage between successive rolling stages, wherein the rolling pattern is applied to each batch of the slabs,
During rolling of the batch, in at least one rolling stand, the rolling stage applied to one slab, plate or strip continues to a different rolling stage applied to another slab, plate or strip Occurs multiple times,
For two slabs that are rolled in succession, the time gap between the start of their rolling stages is always shorter than the sum of the durations of the rolling stage and all the cooling stages of the rolling pattern. A rolling method characterized by comprising:   At least one plate or strip is present in the cooling stage after the first rolling stage of the first batch of slabs is completed by the start of the last rolling stage of the last plate or strip The rolling method according to claim 1. The interleaving depth of the rolling pattern of the rolling method is
For a rolling pattern having an uneven duration of the rolling stage, by rounding down the minimum value of a group of numbers consisting of the duration of the cooling stage and the longest duration of the rolling stage to a natural number For rolling patterns defined as integers obtained and having the rolling stage with an equal duration, round down the minimum of the group of numbers consisting of the quotient of the duration of the cooling stage and the duration of the rolling stage. In the rolling method defined as an integer obtained by making it a natural number,
For batches where the interleave depth is greater than 1 plus at least one after the first rolling stage of the first slab batch is completed by the start of the last rolling stage of the last plate or strip. A rolling method according to claim 1 or 2, characterized in that the plate or strip is present in the cooling stage.   The number of rolling stages is two, namely rolling stage 1 and rolling stage 2, and the rolling stages are separated by one cooling stage. Rolling method. In a rolling pattern having an equal number of the interleaving depth and the rolling stage with an equal duration, the duration of the cooling stage is:
-An integral multiple of the duration of the rolling stage; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is equal to the sum of twice the duration of one said rolling stage and the other processing time. The rolling method according to claim 4. In a rolling pattern having an equal number of interleave depths and an uneven duration of the rolling stage, the duration of the cooling stage is:
-An integral multiple of the longest rolling stage duration; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 is equal to the sum of twice the duration of the longest rolling stage and other processing times. The rolling method according to claim 4. In a rolling pattern having an unequal number of interleaving depths and the rolling stage of equal duration, the duration of the cooling stage is:
-An integral multiple of the duration of the rolling stage; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 corresponds to the sum of three times the duration of one rolling stage plus the other processing time. The rolling method according to claim 4. In a rolling pattern having an unequal number of interleave depths and an uneven duration of the rolling stage, the duration of the cooling stage is:
-An integral multiple of the longest rolling stage duration; and-other processing times,
Equal to the sum of
For continuously rolled slabs, the maximum time gap between the start of each rolling stage 1 corresponds to the sum of three times the duration of the longest rolling stage and other processing times. The rolling method according to claim 4. In a rolling pattern having the rolling stage of equal duration after completion of rolling of the batch of first plates or strips, the duration of the cooling stage is:
-An integral multiple of the duration of the rolling stage; and
-Other processing time,
Equal to the sum of
During the rolling of batches of a predetermined interval, the rolling stage 1 is replaced with the rolling stage 2, and the predetermined interval is a time that is the number of times of interleaving depth of the duration of the rolling stage and the other processing time. The rolling method according to claim 4, wherein the rolling method matches the sum of the above. In a rolling pattern having an uneven duration of the rolling stage after completion of rolling the batch of first plates or strips, the duration of the cooling stage is:
-An integral multiple of the longest rolling stage duration; and
-Other processing time,
Equal to the sum of
During the rolling of batches at a predetermined interval, the rolling stage 1 is replaced with the rolling stage 2, and the predetermined interval is a time that is the number of times of interleaving depth of the duration of the longest rolling stage and the other processing. The rolling method according to any one of claims 4, 6 and 8, wherein the rolling method coincides with a sum of time. An unequal duration of the rolling stage and a duration of the cooling stage equal to, or longer than, or a natural number of the sum of the durations of both of the rolling stages In a rolling pattern having
The rolling stage 1 is carried out with the same frequency as the rolling stage 2 for a time interval equal to the duration of the cooling stage after completion of rolling of the batch of first plates or strips. Item 11. The rolling method according to any one of Items 4, 6, 8, and 10. In a rolling pattern having an uneven duration of the rolling stage and a duration of the cooling stage, the duration of the cooling stage is:
-Duration of both said rolling stages; and-duration of either said rolling stage 1 or said rolling stage 2,
Equal to or longer than the sum, or equal to or longer than the natural number of those sums,
During the duration of the cooling phase, the length of time during which the rolling phase 1 is performed is equal to the time length obtained by adding 1 unit time to the performing time of the rolling phase 2 or subtracting 1 unit time. The rolling method according to any one of claims 4, 6, 8 and 10.   The number of rolling stages is three, namely rolling stage 1, rolling stage 2 and rolling stage 3, and the rolling stage 1 and the rolling stage 2 are separated by the cooling stage 1, and the rolling stage 2 and the rolling stage 2 The rolling method according to any one of claims 1 to 3, wherein the rolling step 3 is separated in the cooling step 2. The duration of the cooling phase 1 is
A time that is a natural number A times the sum of the durations of the three rolling stages, and a remaining processing time of 1,
And the duration of the cooling time 2 is
A time that is a natural number B times the sum of the durations of the three rolling stages, and a remaining processing time of 2,
Equal to the sum of
For the continuously rolled slab, the maximum time gap between the start of each rolling stage 1 is the duration of the three rolling stages, the remaining processing time 1 and the remaining processing time 2 14. The rolling method according to claim 13, wherein the rolling time is equal to the sum of the longer time. The duration of the cooling phase 1 is
A time that is a natural number C times the sum of the duration of the three rolling stages and the duration of the rolling stage 3, and the remaining processing time 3,
And the duration of the cooling time 2 is
-A time that is a natural number D times the sum of the duration of the three rolling stages and the duration of the rolling stage 1; and
-Remaining processing time 4,
Equal to the sum of
For the continuously rolled slab, the maximum time gap between the start of each rolling stage 1 is the duration of the three rolling stages, the remaining processing time 3 and the remaining processing time. The rolling method according to claim 13, wherein the rolling time is equal to the sum of the longer time. During the rolling of the batch, from completion of the rolling of the batch of the first plate or strip to the start of the rolling stage 3 of the last plate or strip,
The rolling stage 2 always continues after the rolling stage 1, the rolling stage 3 always continues after the rolling stage 2, and the rolling stage 1 always continues after the rolling stage 3. The rolling method according to claim 13 or 14. During the rolling of the batch, from completion of the rolling of the batch of the first plate or strip to the start of the rolling stage 3 of the last plate or strip,
The rolling stage 3 always continues after the rolling stage 1, the rolling stage 2 always continues after the rolling stage 3, and the rolling stage 1 always continues after the rolling stage 2. The rolling method according to claim 13 or 15.   17. The rolling stage 1, the rolling stage 2 and the rolling stage 3 are carried out with equal frequency during a time interval equal to the duration of the cooling stage 1. Rolling method.   18. The rolling stage 1, the rolling stage 2 and the rolling stage 3 are carried out with unequal frequency during a time interval equal to the duration of the cooling stage 1. Rolling method. During a time interval equal to the duration of the cooling stage 1, the number of rolling stages 3 carried out is greater than the number of rolling stages 1 carried out and the number of rolling stages 2 carried out,
During a time interval equal to the duration of the cooling stage 2, the number of rolling stages 1 carried out is greater than the number of rolling stages 2 carried out and the number of rolling stages 3 carried out. The rolling method according to claim 19.   After completion of the rolling stage following the cooling stage, the product sheet or strip is transferred from a rolling line of a rolling mill to a storage position outside the rolling position by at least one lateral movement facility; 21. The rolling method according to any one of claims 1 to 20, wherein the plate or strip is transferred from the storage position to the rolling line by the lateral movement facility after completion of a cooling step. .   During the batch rolling, the same plate or strip is transferred to the storage position or the rolling line by the same lateral movement equipment, while another plate or strip is transferred to the rolling line or the storage position. The rolling method according to claim 21, wherein the occurrence occurs at least once. An apparatus for carrying out the thermomechanically controlled rolling method according to any one of claims 1 to 22, comprising:
Move the plate or strip from at least one rolling stand (3), a rolling line, a storage position (6, 8) outside the rolling line, and from the rolling line to the storage position (6, 8) An apparatus comprising at least one lateral movement facility for
The number of the storage positions (6, 8) is half the interleave depth of the rolling pattern to be implemented, rounded up to a natural number.   At least one of the lateral movement facilities transfers one plate or strip to the rolling line or the storage position (6, 8) and another plate or strip to the storage position (6, 8) or the rolling line. 24. The device according to claim 23, wherein   23. The thermomechanically controlled rolling method according to any one of claims 1 to 22, for rolling a batch of metal slabs into plates or strips by a rolling mill equipped with at least one rolling stand. Use of.

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