US20100077823A1 - Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips - Google Patents

Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips Download PDF

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US20100077823A1
US20100077823A1 US12/527,495 US52749508A US2010077823A1 US 20100077823 A1 US20100077823 A1 US 20100077823A1 US 52749508 A US52749508 A US 52749508A US 2010077823 A1 US2010077823 A1 US 2010077823A1
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Prior art keywords
rolling
phase
phases
duration
sum
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Nick Champion
Michael Trevor Clark
Birger Schmidt
Michael Mick Steeper
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Primetals Asset Management UK Ltd
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Siemens VAI Metals Technologies Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/004—Transverse moving
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/06—Thermomechanical rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to the general field of thermo-mechanical controlled rolling of metal slabs to plates or strips in a rolling mill, in particular to a technique known as interleaving and an apparatus for performing that technique.
  • Thermo-mechanical controlled rolling involves the rolling of metal-slabs, plates or strips at specific temperatures in order to achieve specific metallurgical microstructures and mechanical properties. It typically involves two or more rolling phases. Between two successive rolling phases the plates or strips are allowed to cool down during a cooling phase to the specific temperature which is desired for the next rolling phase. For example, when two rolling phases are performed first a number of passes are rolled at a high temperature during the first rolling phase, and then the obtained plate or strip is allowed to cool down to a specific temperature in a cooling phase before the second rolling phase starts. Analogously, in three phase rolling two cooling phases take place, a first one between rolling phase 1 and rolling phase 2 , and a second one between rolling phase 2 and rolling phase 3 .
  • the interleaving technique is employed. It consists in concurrently processing more than one metal slab, plate or strip in the rolling mill.
  • the interleave depth is a characteristic parameter for thermo-mechanical controlled rolling according to interleaving technique.
  • a special rolling pattern is applied on each slab of the batch to be processed.
  • the rolling pattern is the sequence and duration of all rolling phases and cooling phases which are applied when processing a slab to a plate or strip.
  • Such a rolling pattern comprises at least two rolling phases, and cooling phases between successive rolling phases.
  • interleave depth is defined as the integer number obtained by rounding the smallest value from the group of values consisting of the quotients of the durations of the cooling phases and the duration of the longest rolling phase down to a whole number.
  • interleave depth is defined as the integer number of the obtained by rounding the smallest value from the group of values consisting of the quotients of the durations of the cooling phases and the duration of a rolling phase down to a whole number.
  • the smallest value is 1.95.
  • 1.95 rounded down to a whole number is 1.
  • the interleave depth is 1. If the smallest value is a whole number the integer number defining the interleave depth is equal to that whole number.
  • the interleave depth is defined as the integer number which is the quotient of the duration of the cooling phase and the duration of a rolling phase rounded down to a whole number.
  • FIGS. 1-6 Such a technique is illustrated in FIGS. 1-6 for two phase rolling of plates with an interleave depth of two on a simplified plan view of a single stand rolling mill.
  • a first slab to be rolled is heated in the furnace 1 and then discharged onto the roller table 2 and transported to the rolling mill stand 3 where a number of reversing rolling passes are carried out until its rolling phase 1 is completed.
  • the thereby obtained plate 5 is then moved down the roller table 4 to a storage position 6 where plate 5 is stored during its cooling phase.
  • FIG. 1 shows plate 5 in storage position 6 .
  • FIG. 2 shows plate 7 in storage position 8 .
  • FIG. 3 shows plate 9 after completion of rolling phase 1 .
  • FIG. 4 shows the position of plates 5 , 7 and 9 when rolling phase 2 starts for plate 5 .
  • FIG. 5 illustrates the situation after the penultimate rolling pass of rolling phase 2 of plate 5 .
  • FIG. 6 illustrates the situation after the last pass of plate 5 .
  • a disadvantage of storing plates during their cooling phases on the same roller tables that are used for rolling is the additional length of the roller tables, and of the building housing the roller tables, that is required in comparison to thermo-mechanical rolling without interleaving technique.
  • the interleave depth is two and the roller table 2 on the entry side of the rolling mill stand 3 needs to have at least a length which is equal to twice the length of plates after rolling phase 1 plus the length of a plate after the penultimate pass of rolling phase 2 .
  • the roller table 4 on the exit side of the rolling mill stand 3 needs to have a length which is at least equal to the larger one of the two following two values: three times the length of plates after rolling phase 1 , length of plates after rolling phase 2 .
  • interleave depth can be up to twelve or even more.
  • the roller table on the entry side of a rolling mill stand would need to have at least a length which is equal to twelve times the length of the plates after rolling phase 1 plus the length of the plate on the penultimate pass of rolling phase 2 .
  • GB1396946 discloses side-shift roller table sections which can be moved transversely out of the rolling line.
  • a plate is positioned on one of the side-shift roller tables and then moved transversely off-line into a storage position.
  • This transverse movement of the side-shift roller table either brings a cooled plate ready for the next rolling phase into the rolling line or it brings an empty side-shift roller table back into the rolling line. Since the plates are not stored in a row but side by side, the required length of roller tables and building is significantly reduced. However, to cope with an interleave depth of twelve would require twelve side-shifting roller tables which would take up a very large transverse area that would not fit into a standard rolling mill building.
  • Another known solution to the problem of storing large numbers of plates during their cooling phases is to use one or more storing roller tables which run parallel with the mill line roller tables and moving-equipment to move plates between the mill line and the holding line. After rolling phase 1 is finished a moving-equipment moves the plates onto the storing roller tables. When the cooling period is finished the plate is moved back into the mill line for rolling phase 2 .
  • a storing roller table parallel to the mill-line roller table would still need to be around 120 metres long.
  • To use two or more storing tables with moving-equipment in order to shorten the required length of each individual additional table would increase the complexity of the equipment and need more transverse space.
  • FIG. 7 schematically shows the timing diagram of the rolling pattern of an example of a two phase rolling prior art interleaving method with interleave depth two and equal duration of the rolling phases, the cooling phase being twice as long as a rolling phase, on a rolling mill with one rolling mill stand.
  • a timing diagram depicts the chronological relation of the rolling phases and cooling phases applied on different slabs and the plates or strips derived from these slabs.
  • the processed batch contains 6 slabs which yield plates 1 - 6 .
  • rolling pattern in FIG. 7 for the first three slabs rolling phase 1 starts within a period of time equal to twice the duration of a rolling phase.
  • a period of time which is the sum of the durations of rolling phase 1 , of the cooling phase, and of rolling phase 2 , elapses until rolling phase 1 of the fourth slab starts. That means that the furnace has to discharge the first three slabs within a short period of time, and then has to wait a long time until the next three slabs are discharged within a short period of time.
  • furnace discharge pattern would consist of thirteen slab discharges at intervals of the duration of a rolling phase followed by a gap of the duration of fourteen rolling phases.
  • the object of the present invention is to provide a method and an apparatus for thermo-mechanical controlled rolling by interleaving technique which permit the application of a more even furnace discharge pattern and require less space and equipment than the prior art.
  • thermo-mechanical controlled rolling a batch of metal slabs to plates or strips on a rolling mill comprising at least one rolling mill stand according to a rolling pattern comprising at least two rolling phases of at least one rolling pass and cooling phases between successive rolling phases, which rolling pattern is applied on each slab of the batch, characterized in that, during rolling the batch, on at least one rolling mill stand it occurs 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, and that 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.
  • This method permits the application of a furnace discharge pattern that is more even than in the prior art.
  • the time gap between the starts of rolling phases 1 of two consecutively rolled slabs is at least once equal to the sum of the duration of all rolling phases and all cooling phases of the rolling pattern when batches larger than the rolling pattern's interleave depth are processed. Since the time gap between starts of rolling phases 1 for consecutively rolled slabs governs the discharge of slabs from the furnace, a smaller time gap permits a more even furnace discharge pattern.
  • this is the case for batches larger than interleave depth plus one, the interleave depth of the method's rolling pattern,
  • the number of rolling phases is two, namely rolling phase 1 and rolling phase 2 , which are separated by one cooling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with an even numbered interleave depth and equal durations of the rolling phases where the duration of the cooling phase is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of twice the duration of one rolling phase and the remainder time.
  • the whole number is the integer of the quotient of cooling phase duration and duration of one rolling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with an even numbered interleave depth and unequal durations of the rolling phases, where the duration of the cooling phase is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of twice the duration of the longest rolling phase and the remainder time.
  • the whole number is the integer of the quotient of cooling phase duration and duration of the longest rolling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with an uneven numbered interleave depth and equal durations of the rolling phases, where the duration of the cooling phase is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of thrice the duration of one rolling phase and the remainder time.
  • the whole number is the integer of the quotient of cooling phase duration and duration of one rolling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with an uneven numbered interleave depth and unequal durations of the rolling phases, where the duration of the cooling phase is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of thrice the duration of the longest rolling phase and the remainder time.
  • the whole number is the integer of the quotient of cooling phase duration and duration of the longest rolling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with equal durations of the rolling phases, where the duration of the cooling phase is equal to the sum of
  • the whole number is the integer of the quotient of cooling phase duration and duration of one rolling phase.
  • the first plate or strip of the batch rolling phase 1 alternates with rolling phase 2 during rolling the batch at an interval which is up to the sum of interleave depth times duration of the longest rolling phase and the remainder time.
  • the whole number is the integer of the quotient of cooling phase duration and duration of the longest rolling phase.
  • thermo-mechanical controlled rolling methods with rolling patterns with unequal durations of the rolling phases and a duration of the cooling phase that is equal to or longer than the sum of the durations of both rolling phases, or a whole number times that sum
  • rolling phase 1 is performed as often as rolling phase 2 .
  • the whole number is the integer of the quotient of cooling phase duration and the sum of the durations of both rolling phases, i.e. in mathematical terms
  • thermo-mechanical controlled rolling methods with rolling patterns with unequal durations of the rolling phases and a duration of the cooling phase that is equal to or longer than the sum of
  • the amount of rolling phases 1 performed is equal to the amount of rolling phases 2 performed plus 1 or minus 1.
  • the whole number is the integer of the quotient of cooling phase duration and the sum of the durations of both rolling phases and the duration of either rolling phase 1 or rolling phase 2 , i.e. in mathematical terms
  • the number of rolling phases is three, namely rolling phase 1 , rolling phase 2 and rolling phase 3 , rolling phase 1 and rolling phase 2 being separated by cooling phase 1 , and rolling phase 2 and rolling phase 3 being separated by cooling phase 2 .
  • thermo-mechanical controlled rolling methods with rolling patterns where the duration of cooling phase 1 is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of the durations of the three rolling phases plus the greater of remainder time 1 and remainder time 2 .
  • the whole number A is the integer of the quotient of the duration of cooling phase 1 and the sum of the durations of all three rolling phases
  • the whole number B is the integer of the quotient of the duration of cooling phase 2 and the sum of the durations of all three rolling phases.
  • thermo-mechanical controlled rolling methods with rolling patterns where the duration of cooling phase 1 is equal to the sum of
  • the maximum time gap between the starts of their rolling phases 1 is up to the sum of the three rolling phase times plus the greater of remainder time 3 and remainder time 4 .
  • the whole number C is the integer of the quotient of the duration of cooling phase 1 and the sum of the durations of all three rolling phase plus the duration of rolling phase 3
  • the whole number D is the integer of the quotient of the duration of cooling phase 2 and the sum of the durations of all three rolling phases plus the duration of rolling phase 1 .
  • thermo-mechanical controlled rolling methods that during rolling the batch, from after completion of rolling the first plate or strip of the batch until the beginning of rolling phase 3 of the last plate or strip of the batch,
  • a rolling phase 1 is always succeeded by a rolling phase 2
  • a rolling phase 2 is always succeeded by a rolling phase 3
  • a rolling phase 3 is always succeeded by a rolling phase 1 .
  • This pattern makes a very even furnace discharge pattern possible.
  • thermo-mechanical controlled rolling methods that during rolling the batch, from after completion of rolling the first plate or strip of the batch until the beginning of rolling phase 3 of the last plate or strip of the batch,
  • a rolling phase 1 is always succeeded by a rolling phase 3
  • a rolling phase 3 is always succeeded by a rolling phase 2
  • a rolling phase 2 is always succeeded by a rolling phase 1 .
  • This pattern makes a very even furnace discharge pattern possible.
  • thermo-mechanical controlled rolling methods that during a period of time equal to the duration of a cooling phase 1
  • rolling phase 1 , rolling phase 2 and rolling phase 3 are performed equally often.
  • rolling phase 2 and rolling phase 3 are performed unequally often. More preferably, during a period of time equal to the duration of a cooling phase 1 the number of rolling phases 3 performed is greater than the number of rolling phases 1 performed and greater than the number of rolling phases 2 performed,
  • the number of rolling phases 1 performed is greater than the number of rolling phases 2 performed and greater than the number of rolling phases 3 performed.
  • the resulting plates or strips are transferred from a rolling line of the rolling mill to a storage position outside the rolling line by at least one moving-equipment, and afterwards are transferred from the storage position to the rolling line after completion of the cooling phase by the moving equipment.
  • the batch during rolling the batch it occurs at least once that while one plate or strip is transferred to its storage position or to the rolling line another plate or strip is simultaneously transferred to the rolling line or to its storage position by the same moving-equipment.
  • the rolling mill stand comprising at least one rolling mill stand, a rolling line, storage positions outside the rolling line, and at least one moving-equipment for moving plates or strips from the rolling line to the storage positions, characterized in that the number of storage positions is half of the interleave depth of the performed rolling pattern rounded up to a whole number.
  • the moving-equipment may be for example a side-shift roller table, lifting roller tables or cranes.
  • the storage positions may be situated for example on one or more side-shift roller tables, lifting roller tables, or storing roller tables which may be parallel to the rolling line. In case of several parallel storing roller tables these may be staggered.
  • At least one moving-equipment can simultaneously transfer one plate or strip to the rolling line or to a storage position and another plate or strip to a storage position or the rolling line.
  • FIGS. 1-6 show the course of a prior art interleaving method for two phase rolling of with an interleave depth of two on a simplified plan view of a single stand rolling mill.
  • FIG. 7 schematically shows the timing diagram of the rolling pattern of an example of a two phase rolling prior art interleaving method with interleave depth two and equal duration of the rolling phases, the cooling phase being twice as long as a rolling phase, on a rolling mill with one rolling mill stand.
  • FIGS. 8-16 refer to an embodiment of the invention and show a simplified plan view of a single stand rolling mill comprising 2 side-shift roller tables with two transverse positions during the performance of a two phase rolling method with an interleave depth of four and equal duration of the rolling phases.
  • FIG. 17 shows the timing diagram of the rolling pattern described in FIGS. 8-16 .
  • FIG. 18 shows the timing diagram of a prior art rolling pattern for an interleave depth of four.
  • FIG. 19 shows a timing diagram of a two phase rolling pattern according to the present invention with an interleave depth of 3 and rolling phases of equal length.
  • FIG. 20 shows a prior art timing diagram for a two phase rolling pattern with different durations of the rolling phases and interleave depth 1 .
  • FIG. 21 shows a timing diagram of a two phase rolling pattern according to the present invention with different durations of the rolling phases and interleave depth 1 .
  • FIG. 22 shows a timing diagram of a prior art two phase rolling pattern with interleave depth 3 and different durations of the rolling phases.
  • FIG. 23 shows a timing diagram of a two phase rolling pattern according to the present invention with interleave depth 3 and different durations of the rolling phases.
  • FIG. 24 shows a timing diagram of a three phase rolling pattern according to the present invention with different durations and interleave depth 2 .
  • FIG. 7 shows two rolling phases and one cooling phase.
  • the sequence of rolling phase 1 and rolling phase 2 is 1 - 1 - 1 - 2 - 2 - 2 - 1 - 1 - 1 - 2 - 2 - 2 .
  • the time gap between the starts of the rolling phases 1 of two successively rolled slabs is not always smaller than the sum of the duration of all rolling phases and all cooling phases of the rolling pattern.
  • the time gap is equal to the sum of the duration of the two rolling phases and the cooling phase of the rolling pattern.
  • FIG. 8 shows a simplified plan view of a rolling mill apparatus for thermo-mechanical controlled rolling with one rolling mill stand 3 , a rolling line consisting of the roller tables 2 and 4 , a furnace 1 for heating the slabs prior to rolling, and two side-shift roller tables 10 and 11 which are located on the exit side of the rolling mill stand 3 in roller table 4 .
  • Each side-shift roller table can moved between two positions.
  • FIG. 8 shows the moment when the first slab of the batch to be processed has finished rolling phase 1 and the resulting plate 12 is transported onto side-shift roller table 10 which is in its down position. After that, side-shift roller table 10 is moved into its up position, thereby removing plate 12 from the rolling line and transferring it into its storage position.
  • FIG. 9 shows plate 12 in its storage position.
  • FIG. 10 shows plate 13 on side-shift roller table 11 in its down position.
  • FIG. 11 shows plate 12 in its storage position.
  • FIG. 12 shows plate 14 on side-shift roller table 10 in its up position.
  • FIG. 13 shows plates 12 and 14 on side-shift roller table 10 in its down position. After that, rolling phase 2 starts for plate 12 .
  • FIG. 14 shows plate 12 after completion of its rolling phase 2 .
  • plate 12 clears the rolling mill rolling phase 1 starts for a fourth slab 15 , which is also shown in FIG. 14 , resulting in plate 16 .
  • plate 16 completes phase 1 rolling it is moved to side-shift roller table 11 which is in its up position.
  • FIG. 15 shows plate 16 on side-shift roller table 11 in its up position. After that, side-shift roller table 11 is moved in its down position, thereby removing plate 16 from the rolling line and transferring it into its storage position, and simultaneously transferring plate 13 from its storage position to the rolling line.
  • FIG. 16 shows plates 13 and 16 on side-shift roller table 11 in its down position. Then, rolling phase 2 begins for plate 13 .
  • FIG. 17 shows the timing diagram of the rolling pattern described in FIGS. 8-16 .
  • FIG. 18 For comparison the timing diagram of a prior art rolling pattern for an interleave depth of four is shown in FIG. 18 .
  • FIG. 17 shows two rolling phases and one cooling phase.
  • the sequence of rolling phase 1 and rolling phase 2 is 1 - 1 - 1 - 2 - 1 - 2 - 1 - 2 - 1 - 2 - 2 - 2 .
  • the time gap between the starts of the rolling phases 1 of two successively rolled slabs is always smaller than the sum of the duration of rolling phase 1 , rolling phase 2 and the cooling phase of the rolling pattern.
  • FIG. 18 shows two rolling phases and one cooling phase.
  • the sequence of rolling phase 1 and rolling phase 2 is 1 - 1 - 1 - 1 - 1 - 1 - 2 - 2 - 2 - 2 - 1 .
  • the time gap between the starts of the rolling phases 1 of two successively rolled slabs is not always smaller than the sum of the duration of all rolling phases and all cooling phases of the rolling pattern.
  • the time gap is equal to the sum of the duration of the two rolling phases and the cooling phase of the rolling pattern.
  • FIGS. 8-17 reduces the number of side-shift movements that are required because all the side-shift movements after the first two simultaneously transfer one plate into a storage position and another plate back to the rolling line. In the prior art as shown in FIG. 18 no such simultaneous transfer takes place.
  • the invention as outlined in FIGS. 8-17 allows a more even furnace discharge pattern, since after the completion, i.e. the end, of a rolling phase 1 of one slab a new slab starts its rolling phase 1 always after a period of time which is equal to the duration of one rolling phase.
  • the furnace discharge pattern can be even, too.
  • the first five rolling phases 1 start one after another without time gap between the end of rolling phase 1 of one slab and the start of rolling phase 1 of the successively rolled slab, followed by a long time gap between start of rolling phase 1 of the fifth slab and start of rolling phase 1 of the sixth slab. That long time gap lasts for a time period which is equal to the sum of the durations of all rolling phases and the cooling phase.
  • the advantage of the present invention is that compared to the prior art it provides a possibility to use more even furnace discharge patterns, to reduce the number of storage positions needed, and to reduce the number of movements of the moving-equipment which transfers plates from the rolling line to storage positions and back.
  • FIGS. 8-17 refer to a two phase rolling pattern on a rolling mill with one mill stand with interleave depth four, the abovementioned advantages can also be achieved for rolling patterns with more rolling phases, and for rolling patterns with different interleave depths, and for rolling mills with more than one mill stand.
  • An inventive two phase rolling pattern with an interleave depth of 3 and rolling phases of equal length is illustrated in the timing diagram of FIG. 19 .
  • the maximum time gap between starts of successive rolling phases 1 is a time period equal to the duration of three rolling phases, whereas in the interleaving pattern of the prior art for an interleave depth of 3 the maximum time gap would be equal to equal to the duration of five rolling phases.
  • two side shift table would suffice whereas for a prior art rolling pattern three side shift tables would be necessary.
  • FIG. 20 shows a prior art timing diagram for a two phase rolling pattern with different durations of the rolling phases and interleave depth 1 .
  • that rolling pattern it takes a period of time equal to eight times the duration of rolling phase 1 to produce 2 plates, and during that time the mill is only rolling for a period of time equal to six times the duration of rolling phase 1 .
  • FIG. 21 shows a timing diagram for an inventive rolling pattern with the same durations of the rolling phases and the cooling phase, and thereby the same interleave depth, as the prior art rolling pattern of FIG. 20 .
  • inventive pattern of FIG. 21 after rolling phase 2 of the first plate has been completed, the mill is operating without pause and 1 plate is produced after thrice the duration of rolling phase 1 .
  • the throughput is therefore 33% greater than is achieved by the pattern shown in FIG. 20 .
  • FIGS. 22 and 23 A similar improvement in throughput is illustrated by FIGS. 22 and 23 for a two phase rolling pattern with interleave depth 3 .
  • 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 .
  • the prior art rolling pattern illustrated in FIG. 22 four plates are produced in a period of time equal to 15 times the duration of rolling phase 1 , and during that time the mill is operating for a period of time equal to 12 times the duration of rolling phase 1 .
  • the inventive rolling pattern illustrated in FIG. 23 the mill operates continuously after the first two plates and one plate is produced after thrice the duration of rolling phase 1 .
  • FIG. 24 shows a three phase rolling pattern with equal durations of the rolling phases, different durations of the cooling phases and interleave depth 2 .
  • timing diagrams are only shown for small batches to be processed. If the batches were larger, the timing diagrams would continue in the same regular manner as shown for the small batches.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)
US12/527,495 2007-02-16 2008-02-08 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips Abandoned US20100077823A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07270012 2007-02-16
EP07270012A EP1958711A1 (fr) 2007-02-16 2007-02-16 Procédé et appareil pour roulement contrôlé thermo-mécaniquement des plaques et bandes métalliques
PCT/EP2008/000976 WO2008098709A1 (fr) 2007-02-16 2008-02-08 Procédé et appareil de laminage thermomécanique contrôlé de brames et de bandes métalliques

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US20100077823A1 true US20100077823A1 (en) 2010-04-01

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EP (2) EP1958711A1 (fr)
JP (1) JP2010517787A (fr)
KR (1) KR101178348B1 (fr)
AT (1) ATE533573T1 (fr)
BR (1) BRPI0807923A2 (fr)
DK (1) DK2111309T3 (fr)
PL (1) PL2111309T3 (fr)
RU (1) RU2434699C2 (fr)
WO (1) WO2008098709A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122375A1 (en) * 2012-04-26 2015-05-07 Siemens Aktiengesellschaft Thermomechanical rolling of an aluminum plate
US20160243602A1 (en) * 2013-10-04 2016-08-25 Danieli & C. Officine Meccaniche S.P.A. Steel plant for the production of long metal products and corresponding production method
US9506194B2 (en) 2012-09-04 2016-11-29 Ocv Intellectual Capital, Llc Dispersion of carbon enhanced reinforcement fibers in aqueous or non-aqueous media
CN115090669A (zh) * 2022-05-07 2022-09-23 江苏沙钢集团淮钢特钢股份有限公司 高效棒材控轧方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT514079B1 (de) * 2013-05-21 2014-10-15 Siemens Vai Metals Tech Gmbh Verfahren und Vorrichtung zum schnellen Ausfördern von Grobblechen aus einem Walzwerk
CN112387791B (zh) * 2020-12-03 2022-11-18 北京首钢自动化信息技术有限公司 冷轧带钢的轧制温度确定方法及确定系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235840A (en) * 1991-12-23 1993-08-17 Hot Rolling Consultants, Ltd. Process to control scale growth and minimize roll wear
US6185972B1 (en) * 1999-03-11 2001-02-13 Morgan Construction Company Rolling mill finishing section

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2137915B2 (de) * 1971-07-23 1979-10-04 Mannesmann Ag, 4000 Duesseldorf Walzwerk zum Auswalzen von Brammen
JPS5939405A (ja) * 1982-08-30 1984-03-03 Sumitomo Metal Ind Ltd 厚板圧延ライン
JPS5961504A (ja) * 1982-09-30 1984-04-07 Nippon Kokan Kk <Nkk> 厚板の圧延方法
JPS60180604A (ja) * 1984-02-28 1985-09-14 Sumitomo Metal Ind Ltd 厚鋼板の圧延方法
DE19725434C2 (de) * 1997-06-16 1999-08-19 Schloemann Siemag Ag Verfahren zum Walzen von Warmbreitband in einer CSP-Anlage
JP4151298B2 (ja) * 2002-04-08 2008-09-17 Ｊｆｅスチール株式会社 圧延要領決定方法
DE102005052815A1 (de) * 2004-12-18 2006-06-29 Sms Demag Ag Vorrichtung zur Herstellung metallischen Gutes durch Walzen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235840A (en) * 1991-12-23 1993-08-17 Hot Rolling Consultants, Ltd. Process to control scale growth and minimize roll wear
US6185972B1 (en) * 1999-03-11 2001-02-13 Morgan Construction Company Rolling mill finishing section

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122375A1 (en) * 2012-04-26 2015-05-07 Siemens Aktiengesellschaft Thermomechanical rolling of an aluminum plate
US10131979B2 (en) * 2012-04-26 2018-11-20 Primetals Technologies Germany Gmbh Thermomechanical rolling of an aluminum plate
US9506194B2 (en) 2012-09-04 2016-11-29 Ocv Intellectual Capital, Llc Dispersion of carbon enhanced reinforcement fibers in aqueous or non-aqueous media
US20160243602A1 (en) * 2013-10-04 2016-08-25 Danieli & C. Officine Meccaniche S.P.A. Steel plant for the production of long metal products and corresponding production method
US10343200B2 (en) * 2013-10-04 2019-07-09 Danieli & C. Officine Meccaniche S.P.A. Steel plant for the production of long metal products and corresponding production method
CN115090669A (zh) * 2022-05-07 2022-09-23 江苏沙钢集团淮钢特钢股份有限公司 高效棒材控轧方法

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BRPI0807923A2 (pt) 2014-06-24
PL2111309T3 (pl) 2012-03-30
RU2009134523A (ru) 2011-03-27
EP2111309A1 (fr) 2009-10-28
DK2111309T3 (da) 2012-03-05
WO2008098709A1 (fr) 2008-08-21
RU2434699C2 (ru) 2011-11-27
KR20090111348A (ko) 2009-10-26
EP1958711A1 (fr) 2008-08-20
EP2111309B1 (fr) 2011-11-16
JP2010517787A (ja) 2010-05-27
ATE533573T1 (de) 2011-12-15
KR101178348B1 (ko) 2012-08-29

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