EP1958711A1 - 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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Publication number
EP1958711A1
EP1958711A1 EP07270012A EP07270012A EP1958711A1 EP 1958711 A1 EP1958711 A1 EP 1958711A1 EP 07270012 A EP07270012 A EP 07270012A EP 07270012 A EP07270012 A EP 07270012A EP 1958711 A1 EP1958711 A1 EP 1958711A1
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EP
European Patent Office
Prior art keywords
rolling
phase
phases
duration
sum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07270012A
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German (de)
English (en)
French (fr)
Inventor
Nick Champion
Michael Trevor Clark
Birger Schmidt
Michael Steeper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Asset Management UK Ltd
Original Assignee
Siemens VAI Metals Technologies Ltd
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Application filed by Siemens VAI Metals Technologies Ltd filed Critical Siemens VAI Metals Technologies Ltd
Priority to EP07270012A priority Critical patent/EP1958711A1/en
Priority to PCT/EP2008/000976 priority patent/WO2008098709A1/en
Priority to AT08707621T priority patent/ATE533573T1/de
Priority to PL08707621T priority patent/PL2111309T3/pl
Priority to BRPI0807923-4A2A priority patent/BRPI0807923A2/pt
Priority to JP2009549371A priority patent/JP2010517787A/ja
Priority to EP08707621A priority patent/EP2111309B1/en
Priority to RU2009134523/02A priority patent/RU2434699C2/ru
Priority to KR1020097019186A priority patent/KR101178348B1/ko
Priority to US12/527,495 priority patent/US20100077823A1/en
Priority to DK08707621.2T priority patent/DK2111309T3/da
Publication of EP1958711A1 publication Critical patent/EP1958711A1/en
Withdrawn legal-status Critical Current

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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 rolling of a plate or strip has to be completed, i.e. the plate or strip has to have passed all rolling phases, before rolling of another, new slab can start. While a plate or strip cools down between two rolling phases during a cooling phase the rolling mill is completely idle. Contrary to that, according to the interleaving technique rolling of new slabs already starts while a plate or strip previously subjected to rolling phase 1 cools down during a cooling phase.
  • 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 of 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.
  • interleave depth is defined as the integer number of 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.
  • interleave depth is defined as the integer number which is the duration of the cooling phase divided by the duration of a rolling phase.
  • the integer number of a number which is not a whole number is to be understood as the integer number which is obtained after rounding down to a whole number.
  • the integer number of 1.95 is 1.
  • the integer number is equal to the whole number.
  • FIG. 4 shows the position of plates 5, 7 and 9 when rolling phase 2 starts for plate 5.
  • Figure 5 illustrates the situation after the penultimate rolling pass of rolling phase 2 of plate 5.
  • Figure 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.
  • GB 1396946 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.
  • the rolling pattern in Figure 7 for the first three slabs rolling phase 1 starts within a period of time equal to twice the duration of a rolling phase.
  • the furnace discharge pattern of Figure 7 consists of three discharges at intervals of the duration of a rolling phase followed by a gap of the duration of four rolling phases during which no slabs are discharged and then another three slab discharges at intervals of the duration of a rolling phase.
  • the 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 discharge of a large group of slabs at short intervals followed by a long gap causes problems with the slab temperature control and the furnace temperature control. Due to an irregular, uneven furnace discharge pattern some slabs will stay longer in the furnace than others, uneven staying times causing different temperatures for different slabs and thereby affecting metallurgy and yield negatively.
  • 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, an interleave depth being attributed to the rolling pattern, which interleave depth is defined for rolling patterns with unequal durations of the rolling phases as the integer number of 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, and for rolling patterns with equal durations of the rolling phases as the integer number of 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, 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
  • 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.
  • the first rolling phase of the first slab of the batch has been completed until the beginning of the last rolling phase of the last plate or strip there is always at least one other plate or strip in its cooling phase. More preferably, this is the case for batches larger than interleave depth plus one.
  • the number of rolling phases is two, namely rolling phase 1 and rolling phase 2, which are separated by one cooling phase. It is preferred for two-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
  • 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
  • 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
  • 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
  • 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
  • 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 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
  • thermo-mechanical controlled rolling methods with rolling patterns where the duration of cooling phase 1 is equal to the sum of
  • 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, and a rolling phase 2 is always succeeded by a rolling phase 3, and 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, and a rolling phase 3 is always succeeded by a rolling phase 2, and 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.
  • thermo-mechanical controlled rolling methods 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 unequally often.
  • 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, and during a period of time equal to the duration of cooling phase 2 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. Since thereby the plates or strips do not remain on the rolling line during their cooling phases, the length of the rolling line required for performing the interleaving method is reduced.
  • 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.
  • two plates or strips are transferred by one movement of the moving-equipment.
  • an apparatus for thermo-mechanical controlled rolling 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.
  • This is for example the case for side-shift roller tables, which allow to transfer one plate or strip into the rolling line while simultaneously moving another plate or strip to a storage position.
  • Figure 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.
  • Figure 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.
  • Figure 9 shows plate 12 in its storage position.
  • Figure 12 shows plate 14 on side-shift roller table 10 in its up position. After that, side-shift roller table 10 is moved in its down position, thereby removing plate 14 from the rolling line and transferring it into its storage position, and simultaneously transferring plate 12 from its storage position to the rolling line.
  • Figure 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.
  • Figure 14 shows plate 12 after completion of its rolling phase 2. When plate 12 clears the rolling mill rolling phase 1 starts for a fourth slab 15, which is also shown in Figure 14 , resulting in plate 16.
  • plate 16 completes phase 1 rolling is moved to side-shift roller table 11 which is in its up position.
  • Figure 15 shows plate 16 on side-shift roller table 11 in its up position.
  • 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.
  • Figure 16 shows plates 13 and 16 on side-shift roller table 11 in its down position.
  • rolling phase 2 begins for plate 13. If the batch of metal slabs to be processed is larger than 4, another slab will start its rolling phase 1 when plate 13 clears the rolling mill, effectively repeating the situation which is shown in Figure 14 .
  • the resulting plate would be processed in analogy to Figures 15 and 16 . Also for each further slab the pattern shown in Figures 14 to 16 would be repeated analogously. In the example with an interleave depth of four outlined in Figures 8-16 only two side-shift roller tables are required.
  • Figure 17 shows the timing diagram of the rolling pattern described in Figures 8-16 .
  • Figure 18 For comparison the timing diagram of a prior art rolling pattern for an interleave depth of four is shown in Figure 18 .
  • a total of four side-shift roller tables would be required to remove the first four plates from the rolling line before rolling phase 1 of the fifth slab starts.
  • the present invention reduces the number of side-shift roller tables required.
  • the invention as outlined in Figures 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 Figure 18 no such simultaneous transfer takes place.
  • the invention as outlined in Figures 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.
  • 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.
  • Figures 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 Figure 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.
  • Figures 20 and 21 Another advantage of the invention is illustrated by Figures 20 and 21 .
  • Figure 20 shows a prior art timing diagram for a two phase rolling pattern with different durations of the rolling phases and interleave depth 1. In 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.
  • Figure 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 Figure 20 . With the inventive pattern of Figure 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 Figure 20 .
  • the cooling time is not necessarily an exact multiple of the duration of the rolling phases and some time is required to move the plates to and fro their storage positions.
  • FIG. 22 and 23 A similar improvement in throughput is illustrated by Figures 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 Figure 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 Figure 23 the mill operates continuously after the first two plates and one plate is produced after thrice the duration of rolling phase 1.
  • Figure 24 shows a three phase rolling pattern with equal durations of the rolling phases, different durations of the cooling phases and interleave depth 2.

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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)
EP07270012A 2007-02-16 2007-02-16 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips Withdrawn EP1958711A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP07270012A EP1958711A1 (en) 2007-02-16 2007-02-16 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips
DK08707621.2T DK2111309T3 (da) 2007-02-16 2008-02-08 Fremgangsmåde og apparat til termomekanisk styret valsning af metalplader og -bånd
BRPI0807923-4A2A BRPI0807923A2 (pt) 2007-02-16 2008-02-08 Método e aparelho para laminação termomecânica controlada de chapas e tiras de metal
AT08707621T ATE533573T1 (de) 2007-02-16 2008-02-08 Verfahren und vorrichtung für thermomechanisch gesteuerte walzen von metallplatten und metallstreifen
PL08707621T PL2111309T3 (pl) 2007-02-16 2008-02-08 Sposób oraz urządzenie do termomechanicznego, kontrolowanego walcowania metalowych płyt oraz taśm
PCT/EP2008/000976 WO2008098709A1 (en) 2007-02-16 2008-02-08 Method and apparatus for themo-mechanical controlled rolling of metal plates and strips
JP2009549371A JP2010517787A (ja) 2007-02-16 2008-02-08 金属板およびストリップの熱機械的制御された圧延方法およびその装置
EP08707621A EP2111309B1 (en) 2007-02-16 2008-02-08 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips
RU2009134523/02A RU2434699C2 (ru) 2007-02-16 2008-02-08 Способ и устройство для термомеханической контролируемой прокатки металлических листов и полос
KR1020097019186A KR101178348B1 (ko) 2007-02-16 2008-02-08 금속 플레이트 및 스트립을 열?기계적 제어 압연하기 위한 방법 및 장치
US12/527,495 US20100077823A1 (en) 2007-02-16 2008-02-08 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips

Applications Claiming Priority (1)

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EP07270012A EP1958711A1 (en) 2007-02-16 2007-02-16 Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips

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JP (1) JP2010517787A (da)
KR (1) KR101178348B1 (da)
AT (1) ATE533573T1 (da)
BR (1) BRPI0807923A2 (da)
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EP2656932A1 (de) * 2012-04-26 2013-10-30 Siemens Aktiengesellschaft Thermomechanisches Walzen einer Aluminiumplatte
WO2014187602A1 (de) * 2013-05-21 2014-11-27 Siemens Vai Metals Technologies Gmbh Verfahren und vorrichtung zum schnellen ausfördern von grobblechen aus einem walzwerk
CN112387791A (zh) * 2020-12-03 2021-02-23 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

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CN104718170A (zh) 2012-09-04 2015-06-17 Ocv智识资本有限责任公司 碳强化的增强纤维在含水或非水介质内的分散
ITUD20130127A1 (it) * 2013-10-04 2015-04-05 Danieli Off Mecc Impianto siderurgico per la produzione di prodotti metallici lunghi e relativo metodo di produzione
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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WO2006063839A1 (de) * 2004-12-18 2006-06-22 Sms Demag Ag Vorrichtung zur herstellung metallischen gutes durch walzen

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GB1396946A (en) * 1971-07-23 1975-06-11 Mannesmann Roehren Werke Ag Rolling mill for rolling out slabs
EP0885974A1 (de) * 1997-06-16 1998-12-23 Sms Schloemann-Siemag Aktiengesellschaft Verfahren und Anlage zum Walzen von Warmbreitband in einer CSP-Anlage
WO2006063839A1 (de) * 2004-12-18 2006-06-22 Sms Demag Ag Vorrichtung zur herstellung metallischen gutes durch walzen

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Publication number Priority date Publication date Assignee Title
EP2656932A1 (de) * 2012-04-26 2013-10-30 Siemens Aktiengesellschaft Thermomechanisches Walzen einer Aluminiumplatte
WO2013160162A1 (de) 2012-04-26 2013-10-31 Siemens Aktiengesellschaft Thermomechanisches walzen einer aluminiumplatte
US10131979B2 (en) 2012-04-26 2018-11-20 Primetals Technologies Germany Gmbh Thermomechanical rolling of an aluminum plate
WO2014187602A1 (de) * 2013-05-21 2014-11-27 Siemens Vai Metals Technologies Gmbh Verfahren und vorrichtung zum schnellen ausfördern von grobblechen aus einem walzwerk
EP2999554B1 (de) 2013-05-21 2017-07-19 Primetals Technologies Austria GmbH Verfahren und vorrichtung zum schnellen ausfördern von grobblechen aus einem walzwerk
CN112387791A (zh) * 2020-12-03 2021-02-23 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

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PL2111309T3 (pl) 2012-03-30
ATE533573T1 (de) 2011-12-15
JP2010517787A (ja) 2010-05-27
RU2434699C2 (ru) 2011-11-27
EP2111309B1 (en) 2011-11-16
KR20090111348A (ko) 2009-10-26
EP2111309A1 (en) 2009-10-28
WO2008098709A1 (en) 2008-08-21
RU2009134523A (ru) 2011-03-27
KR101178348B1 (ko) 2012-08-29
BRPI0807923A2 (pt) 2014-06-24
DK2111309T3 (da) 2012-03-05
US20100077823A1 (en) 2010-04-01

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