EP3670011A1 - Refroidissement de la bande métallique dans une cage de laminoir - Google Patents

Refroidissement de la bande métallique dans une cage de laminoir Download PDF

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Publication number
EP3670011A1
EP3670011A1 EP18215003.7A EP18215003A EP3670011A1 EP 3670011 A1 EP3670011 A1 EP 3670011A1 EP 18215003 A EP18215003 A EP 18215003A EP 3670011 A1 EP3670011 A1 EP 3670011A1
Authority
EP
European Patent Office
Prior art keywords
cooling device
work rolls
transport direction
roll stand
rolling
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.)
Granted
Application number
EP18215003.7A
Other languages
German (de)
English (en)
Other versions
EP3670011B1 (fr
Inventor
Michael Krueckel
Thomas Lengauer
Bernd Linzer
Alois Seilinger
Michael Zahedi
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 Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP18215003.7A priority Critical patent/EP3670011B1/fr
Priority to PCT/EP2019/083474 priority patent/WO2020126473A1/fr
Priority to CN201980085188.5A priority patent/CN113165037B/zh
Publication of EP3670011A1 publication Critical patent/EP3670011A1/fr
Application granted granted Critical
Publication of EP3670011B1 publication Critical patent/EP3670011B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • B21B1/24—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 continuous or semi-continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers
    • B21B2203/187—Tilting rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • 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
    • 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
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B21B45/0281—Cleaning devices removing liquids removing coolants

Definitions

  • the first cooling devices of the Prior art roll stands are used to cool the work rolls of the roll stands.
  • a cooling device which consists of one or more individually activated spray nozzles, via which certain points of the flat rolling stock or a slab can be specifically cooled in the width direction of the flat rolling stock in order to achieve temperature homogenization across the width.
  • This cooling device is not arranged in a roll stand.
  • a cooling device arranged in a roll stand, by means of which the work rolls of the roll stand can be cooled.
  • the cooling is spatially resolved as seen in the width direction of the flat rolling stock.
  • This cooling device can also be used to perform spatially resolved cooling of the work rolls in the width direction of the flat rolling stock.
  • Relatively thin, flat rolled goods run out of the last rolling stand of the multi-stand rolling mill at a relatively high speed.
  • this roll stand is generally also the roll stand which carries out the last rolling pass.
  • the time from the exit from the last roll stand to the start of cooling in the cooling section is therefore quite short.
  • the last pass is often carried out by a roll stand other than the last roll stand on the rolling mill.
  • the rolling stands which are arranged downstream of the rolling stand performing the last pass, are passed through without deformation by the flat rolling stock.
  • the time span between the last rolling pass and the start of cooling of the flat rolling stock in the cooling section increases.
  • the relatively thick flat rolling stock usually runs out of the rolling stand performing the last rolling pass at a relatively low speed. This further increases the time between the last roll pass and the start of cooling the flat rolling stock in the cooling section. Due to the increased time period, it may no longer be possible to set certain desired material properties of the flat rolled stock. The product mix that can be produced using the multi-stand rolling mill and the downstream cooling section is therefore limited.
  • Intermediate stand cooling can be arranged between the individual stands of the multi-stand rolling mill. It has already been proposed to treat these intermediate stand cooling systems as part of the cooling section downstream of the rolling train, provided that they are arranged downstream of the roll stand performing the last roll pass. This means that the cooling of the flat rolled stock can begin sooner.
  • a disadvantage of this procedure is that, using the intermediate stand cooling in the transport direction of the flat rolling stock, it is not possible to achieve a homogeneous distribution of the cooling, but only selective cooling, for example every five or six meters. The time required for a certain section of the flat rolling stock from one of these intermediate stand cooling systems to the next such intermediate stand cooling can be over 10 seconds in the case of thick flat rolling stock.
  • only relatively small amounts of coolant can usually be applied to the flat rolling stock by means of the intermediate stand cooling. The cooling caused by the interframe cooling is therefore often inadequate in scope.
  • the object of the present invention is to provide possibilities by means of which a flat metal rolling stock can be cooled in a rolling stand in a simple, effective and inexpensive manner.
  • the first cooling device required for this can be a permanent component of the roll stand. It does not have to be installed and removed depending on the operating mode of the roll stand. Rather, it only has to be shifted between the retracted position and the forward position.
  • the mode of operation of the rolling stand in which the second flat rolling stock passes through the rolling stand without forming, is of course only useful if the second flat rolling stock has previously been rolled in another rolling stand.
  • the mill stand is therefore part of a multi-stand mill, usually a finishing train.
  • the flat rolling stock is hot rolled.
  • the flat rolling stock can be a sheet in individual cases. As a rule, however, it is a tape.
  • the metal from which the flat rolling stock is made can be aluminum or copper, for example. As a rule, it is steel.
  • the work rolls are loaded with a liquid coolant during the rolling of the first flat rolling stock.
  • the loading it is possible for the loading to be carried out by means of a second cooling device, that is to say a cooling device different from the first cooling device.
  • the two cooling devices are preferably combined to form a structural unit, so that when the first cooling device is moved, the second cooling device is also displaced in the transport direction or counter to the transport direction. Compared to a configuration in which the second cooling device is present but is not moved together with the first cooling device, this design is simpler to implement in terms of construction.
  • the first cooling device can be rotated from the first to the second rotational position, for example by means of a hydraulic rotary drive.
  • a hydraulic rotary drive for example, a hydraulic rotary drive, or a corresponding tour as part of the publishing.
  • the liquid coolant is supplied to the first cooling device with a first working pressure.
  • the liquid coolant is fed to the first cooling device with a second working pressure.
  • the second working pressure is preferably less than the first working pressure.
  • the first working pressure can be between 10 bar and 13 bar, while the second working pressure can be between 2 bar and 5 bar.
  • the the numerical values mentioned are of course only exemplary.
  • the second working pressure is fixed.
  • the second working pressure can be set variably by means of an actuator.
  • the actuator can be, for example, a pressure reducing valve.
  • a gaseous medium is blown transversely onto the second flat rolling stock before and / or behind the first cooling device. This ensures a defined cooling effect.
  • the gaseous medium is usually only inflated onto the top of the flat rolling stock. This is also possible on the underside of the flat rolled stock, but is generally not necessary.
  • the at least one line is preferably flexible. As a result, the line - assuming a sufficient length of the line - can easily follow the displacement of the first cooling device from the retracted position to the forward position.
  • the liquid coolant is preferably guided via a rotary connection from the at least one line to the first cooling device.
  • the liquid coolant can be supplied to the first cooling device in a similar manner, regardless of whether the first cooling device is in the retracted position or in the forward position.
  • the first cooling device is preferably displaced by means of an actuator designed as a hydraulic cylinder unit. As a result, the reliability and operational safety of the roll stand are kept at a high level.
  • the first cooling device is preferably guided in a link guide during the displacement. It can thereby be achieved in a simple manner that the first cooling device is positioned exactly in the retracted position and in the forward position.
  • the advantageous configurations of the roll stand correspond to the advantageous configurations of the operating method.
  • the advantages which can be achieved by the advantageous configurations of the roll stand are also the same as in the advantageous configurations of the operating method.
  • a rolling mill has a plurality of roll stands 1.
  • a flat rolling stock 2 passes through the rolling stands 1 in a transport direction x.
  • Each of the roll stands 1 therefore only carries out a single pass on the flat rolling stock 2.
  • the flat rolling stock 2 is rolled in the roll stands 1.
  • the flat rolling stock 2 is usually a strip. In individual cases, however, it can also be a heavy plate.
  • the flat rolling stock 2 consists of metal, for example steel. However, it can also consist of another metal, for example copper or aluminum.
  • the rolling mill has five roll stands 1.
  • the number of roll stands 1 could also be larger or smaller. In particular, configurations with four, six or seven roll stands 1 are also common.
  • the roll stands 1 are in FIG. 1 additionally supplemented with a small letter a to e, in order to be able to differentiate the first rolling stand 1a of the rolling mill, the second rolling stand 1b of the rolling mill, etc., using their reference numerals, if necessary.
  • each of the rolling stands 1 has the representation in FIG FIG 2 (and also FIG. 1 ) at least work rolls 3.
  • the work rolls 3 rotate during rolling about roll axes 4.
  • the roll axes 4 run transversely to the transport direction x.
  • the roll stands 1 are often designed as so-called four-high stands. In this case, as shown in the FIG. 1 and 2nd in addition to the work rolls 3 there are also backup rolls 5. Sometimes the roll stands 1 are designed as so-called sex stands. In this case, in addition to the work rolls 3 and the backup rolls 5, there are intermediate rolls which are arranged between the work rolls 3 and the backup rolls 5. This is not shown in the FIG.
  • the flat rolling stock 2 After rolling in the rolling mill, the flat rolling stock 2 passes through a cooling section 6. In the cooling section 6, the flat rolling stock 2 is cooled. As a rule, a flat cooling medium, usually water, is applied to the flat rolling stock 2 in the cooling section 6 for cooling. After cooling, in the case of a strip, the flat rolling stock 2 is wound up or, in the case of a heavy plate, deposited and possibly stacked.
  • a flat cooling medium usually water
  • the roll stands 1 have, as shown in FIGS FIG 3 and 4th a scaffold stand 7 on the drive side and a scaffold stand 8 on the operator side.
  • the work rolls 3 (as a rule including the associated chocks) can be removed from the respective roll stand 1.
  • the removal is usually carried out through the stand window 9 of the scaffold stand 8 on the operator side. In this case, the removal takes place transversely to the transport direction x, namely parallel to the roller axes 4.
  • This procedure is generally known and familiar to experts and therefore need not be explained in detail.
  • the work rolls 3 are installed in all roll stands 1.
  • a further flat rolling stock 10 is to be rolled in the rolling train.
  • the further flat rolling stock 10 can be a rolling stock separated from the first flat rolling stock 2. Alternatively, sections of the same metal strand can be involved. The question of whether one or the other situation exists is within the scope of the present invention of minor importance. It is crucial that the final thickness d2 of the further rolling stock 10 is greater than the final thickness d1 of the flat rolling stock 2.
  • the further flat rolling stock 10 to correspond to the illustration in FIG FIG 5 is rolled only in the front rolling stands 1 of the rolling mill.
  • the further rolling stands 1 of the rolling train pass through the further flat rolling stock 10 without being rolled there. It thus passes through the rear rolling stands 1 without forming.
  • the cooling section 6 is in FIG 5 not shown. However, it still exists.
  • the further flat rolling stock 10 is rolled only in the roll stands 1a and 1b while it is passing through the roll stands 1c, 1d and 1e without forming.
  • the further flat rolling stock 10 it would also be possible for the further flat rolling stock 10 to be rolled, for example in the rolling stands 1a, 1b and 1c, and for only the rolling stands 1d and 1e to pass through without forming.
  • the further flat rolling stock 10 it would also be possible for the further flat rolling stock 10 to be rolled only in the rolling stand 1a and to pass through the rolling stands 1b to 1e without forming. With a smaller or larger number of roll stands 1, similar configurations result.
  • the further flat rolling stock 10 is rolled in the first roll stand 1a and not rolled in the last roll stand 1e. There is still only a single transition from rolling to non-rolling in the rolling mill.
  • the rolling stand 1c is a flat rolling stock - for example, as previously in connection with FIG. 1 explains the flat rolling stock 2 - should be rolled according to the representation in FIG 6 the work rolls 3 are installed in the corresponding roll stand 1c.
  • a first cooling device 11 of the roll stand 1c is shown in FIG FIG 6 held in a position in which the first cooling device 11, viewed in the transport direction x, is spaced from the work rolls 3.
  • the first cooling device 11 is thus arranged in the roll stand 1c, but it is arranged such that it does not hinder the rolling.
  • the position just explained is referred to below as the retracted position of the first cooling device 11.
  • the rolling stand 1c is a flat rolling stock - for example, as previously in connection with FIG 5 explains the further flat rolling stock 10 - should not roll, the work rolls 3 are first removed from the roll stand 1c.
  • the expansion takes place, as already mentioned and in the FIG 3 and 4th indicated by corresponding arrows, generally transversely to the transport direction x and parallel to the roller axes 4 through the stand window 9 of the operator-side stand 8.
  • the back-up rolls 5 are, however, usually raised.
  • FIG 7 shows the corresponding state in which the work rolls 3 have been removed from the roll stand 1c and the support rolls 5 have been raised.
  • the first cooling device 11 After removal of the work rolls 3, the first cooling device 11 is in the transport direction x or against Transport direction x shifted.
  • the shift is in FIG 8 indicated by corresponding arrows.
  • the first cooling device 11 can be guided, for example, in a link guide of the roll stand 1c.
  • the representation in FIG 8 that the state in which the corresponding roll stand 1c is to roll a flat rolling stock 2 is shown in the left half, and the state in which the corresponding roll stand 1c is to cool a flat rolling stock 10 is shown in the right half.
  • the shifting is generally carried out by means of a corresponding actuator 12.
  • the actuator 12 can, as shown in FIG FIG 8 be designed as a hydraulic cylinder unit.
  • the first cooling device 11 is in a position other than the retracted position. This other position is referred to below as the forward position.
  • the first cooling device 11 is as shown in FIG FIG 8 arranged in the forward position in an area in which the work rolls 3 had been arranged beforehand, ie before the work rolls 3 were removed.
  • FIG. 9 also shows the corresponding state in which the work rolls 3 are removed from the roll stand 1c and the first cooling device 11 is in its forward position.
  • first cooling device 11 is displaced in the transport direction x or counter to the transport direction x depends on whether the first cooling device 11 is located in its retracted position in the transport direction x in front of or behind the work rolls 3. If the first cooling device 11 is located in front of the work rolls 3, that is to say on the inlet side of the roll stand 1c, it is displaced in the transport direction x. If the first cooling device 11 is located behind the work rolls 3, that is to say on the outlet side of the roll stand 1c, it is shifted counter to the transport direction x.
  • shift in the transport direction x is not intended to mean that a shift is necessarily exactly parallel to the transport direction x. It is sufficient that a significant component of the displacement is directed in the transport direction x.
  • displacement can take place parallel to a stripper plate 13, by means of which a liquid coolant is stripped from one of the work rolls 3 when the work rolls 3 are installed.
  • the further flat rolling stock 10 passes through the roll stand 1c.
  • the flat rolling stock 10 passes through the roll stand 1c without deformation.
  • the first cooling device 11 which is now in the forward position, as shown in FIG FIG 8 the further flat rolling stock 10 is charged with a liquid coolant 14.
  • the liquid coolant 14 is usually water or is essentially based on water.
  • the liquid coolant 14 is fed to the first cooling device 11 via at least one line 15.
  • the line 15 can be a rigid line, for example a telescopic tube. In many cases, however, line 15 is as shown in FIG FIG 10 a flexible line, a kind of hose.
  • FIG 10 shows the first cooling device 11 in solid lines in its retracted position and in dashed lines in the forward position and additionally in an intermediate position, which the first cooling device 11 assumes briefly when moving from the retracted position to the forward position.
  • FIG 8 and 10th a further advantageous embodiment can also be seen.
  • the application serves in particular for cooling, but under certain circumstances also for adjusting the contour of the work rolls 3 and thus the contour of the roll gap formed by the work rolls 3. It is as shown in FIG 8 possible that the work rolls 3 are loaded by means of the first cooling device 11.
  • the first cooling device 11 is in the retracted position.
  • the outlet nozzles 16 are preferably as shown in FIG FIG 8 oriented in such a way that the liquid coolant 14, viewed from the first cooling device 11, extends essentially orthogonally to the transport direction x toward the corresponding flat rolling stock 10.
  • the outlet nozzles 16 are thus in the forward position of the first cooling device 11 depending on whether the liquid coolant 14 is from is applied above or from below to the corresponding flat rolling stock 10, directed downwards or upwards. Minor deviations from the vertical are possible. It is also possible and also quite common for the outlet nozzles 16 to deliver the liquid coolant 14 in a fan-like manner.
  • the application orthogonal to the transport direction x relates to the central direction of propagation of the coolant 14 discharged from the respective outlet nozzle 16.
  • the outlet nozzles 16 are as shown in FIG FIG 8 preferably oriented such that the liquid coolant 14, viewed from the first cooling device 11, spreads with one component in or against the transport direction x toward one of the work rolls 3.
  • the outlet nozzles 16 are accordingly oriented in the retracted position of the first cooling device 11, depending on whether the liquid coolant 14 is applied to one of the work rolls 3 on the inlet side or outlet side. Certain deviations from the transport direction x are indeed possible. In particular, it can be dispensed essentially parallel to the scraper plates 13.
  • the component in the transport direction x or opposite to the transport direction x is larger than the component orthogonal to the transport direction x. It is also possible and also quite common for the outlet nozzles 16 to deliver the liquid coolant 14 in a fan-like manner. In this case, the application with a component in the transport direction x or counter to the transport direction x relates to the central direction of propagation of the coolant 14 discharged from the respective outlet nozzle 16.
  • the first cooling device 11 is oriented with respect to an axis 17 related to the first cooling device 11 and running parallel to the roller axes 4 in the retracted position in a first rotational position and in the forward position in oriented to a second rotational position.
  • the corresponding orientations are from the FIG 6 , 8th , 9 and 10th evident.
  • the rotation of the first cooling device 11 from the first to the second rotational position can be done, for example, by a corresponding one Design of the backdrop guide are effected, which is used in the context of moving the first cooling device 11. In this case, no further actuator is required for rotation in addition to the actuator 12.
  • the liquid coolant 14 is generally fed to the first cooling device 11 with a relatively high working pressure p1.
  • the working pressure p1 - hereinafter referred to as the first working pressure - is usually in the range between 10 bar and 13 bar.
  • the liquid coolant 14 is generally fed to the first cooling device 11 with a relatively low working pressure p2.
  • the working pressure p2 - hereinafter referred to as the second working pressure - is less than the first working pressure p1. It is usually in the range between 2 bar and 5 bar, in particular around 3 bar to 4 bar.
  • the first working pressure p1 is usually fixed.
  • the second working pressure p2 can also be fixed. Alternatively, it can be variably set using an actuator.
  • the actuator can - like other control elements such as valves - be arranged outside the roll stand 1c.
  • the roll stand 1c comprises, as shown in FIGS 6 to 9 not just a single first cooling device 11, but four such cooling devices 11, namely a first cooling device each 11 on the inlet side in front of the upper work roll 3, a first cooling device 11 on the inlet side in front of the lower work roll 3, a first cooling device 11 on the outlet side in front of the upper work roll 3 and a first cooling device 11 on the outlet side in front of the lower work roll 3.
  • the above explanations therefore apply to each of the first Cooling devices 11.
  • the liquid coolant 14 can easily fall off and drip off the flat rolling stock 10.
  • the liquid coolant 14 can easily fall off and drip off the flat rolling stock 10.
  • this is disadvantageous because it no longer guarantees a defined cooling effect.
  • This is also disadvantageous because the defined application of a further coolant by a further cooling device is no longer guaranteed.
  • This further cooling device can be, for example, a first cooling device of a subsequent roll stand 1d. It can also be an intermediate stand cooling which is arranged between these two roll stands 1c, 1d.
  • the roll stand 1c can, as shown in FIG FIG 8 have a transverse blow-off device 18.
  • the transverse blow-off device 18 When the first cooling device 11 is in the forward position, the transverse blow-off device 18 is arranged in front of or behind the first cooling device 11, as seen in the transport direction x.
  • a gaseous medium 19 is blown transversely onto the flat rolling stock 10 in front of or behind the first cooling device 11.
  • the liquid coolant 14 applied to the surface of the flat rolling stock 10 by means of the first cooling device 11 is removed from the surface of the flat rolling stock 10.
  • the gaseous medium 19 can be air. Alternatively, it can be a protective gas, for example nitrogen or argon.
  • the gaseous medium 19 is generally inflated only for the top of the flat rolling stock 10. However, it can also be implemented for the underside of the flat rolling stock 10.
  • the first cooling device 11 is used both for loading the flat rolling stock 10 and (when rolling the flat rolling stock 2) for loading the work rolls 3.
  • the first cooling device 11 is used exclusively to act on the flat rolling stock 10.
  • the first cooling device 11 is deactivated when the flat rolling stock 2 is rolled.
  • the rolling stand 1c in this case generally has a second cooling device 20 to act on the work rolls 3 (that is, when the flat rolling stock 2 is rolled). If the roll stand 1c has a plurality of first cooling devices 11, each of the first cooling devices 11 generally also has its own second cooling device 20.
  • the roll stand 1c has the FIG 12 and 13 in addition to the first cooling device 11, the second cooling device 20.
  • the work rolls 3 are acted upon by a liquid coolant 14 during the rolling of the flat rolling stock 2.
  • the work rolls 3 are installed in particular in the roll stand 1c.
  • first cooling device 11 In principle, only the first cooling device 11 must be able to be moved between the retracted position and the forward position. This is not necessary for the second cooling device 20.
  • the first cooling device 11 and the second cooling device 20 are often as shown in FIGS FIG 12 and 13 however combined into one unit.
  • the second cooling device 20 is also displaced in the transport direction x or counter to the transport direction x.
  • At least the rear rolling stands 1 of the rolling train - for example the rolling stands 1c, 1d and 1e - it is possible to start cooling a flat rolling stock 10 immediately after the last rolling pass - which takes place in the rolling stand 1b, for example.
  • the time between the last roll pass and the start of cooling the flat rolling stock 10 can thereby minimized.
  • the product mix of the rolling mill that can be produced can be expanded.
  • the achievable material properties can be optimized for a flat rolling stock 10 with a relatively large final thickness d2. This also applies to the continuous operation of the rolling mill, especially in a casting-rolling combination.
  • the present invention also has other advantages. For example, it is possible to consider and model the cooling of the flat rolling stock 10 in the rear rolling stands 1 of the rolling mill and the cooling in the downstream cooling section 6 as a whole. Such procedures are known as such for the inclusion of interframe cooling. If available, the intermediate stand cooling can also be included in the cooling of the flat rolling stock 10, as in the prior art. Some flat rolled products 10 can even be completely cooled within the rolling train.
  • the configurations that are already known in the prior art for cooling the work rolls 3 can also be adopted.
  • Such an application, as seen in the width direction of the flat rolling stock 10, is for the application of the work rolls 3, for example, from the above-mentioned one WO 2006/076 777 A1 and the one mentioned at the beginning US 2001/0 007 200 A1 known.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP18215003.7A 2018-12-21 2018-12-21 Refroidissement de la bande métallique dans une cage de laminoir Active EP3670011B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18215003.7A EP3670011B1 (fr) 2018-12-21 2018-12-21 Refroidissement de la bande métallique dans une cage de laminoir
PCT/EP2019/083474 WO2020126473A1 (fr) 2018-12-21 2019-12-03 Refroidissement d'un feuillard métallique dans un cage de laminoir
CN201980085188.5A CN113165037B (zh) 2018-12-21 2019-12-03 金属带材在轧制机架中的冷却

Applications Claiming Priority (1)

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EP4101552A1 (fr) 2021-06-09 2022-12-14 Primetals Technologies Austria GmbH Procédé de fabrication d'acier micro-allié, acier micro-allié fabriqué selon le procédé et installation combinée de coulée et de laminage
AT525283B1 (de) 2021-10-29 2023-02-15 Primetals Technologies Austria GmbH Verfahren zur Herstellung eines Dualphasenstahlbands in einer Gieß-Walz-Verbundanlage, ein mit dem Verfahren hergestelltes Dualphasenstahlband und eine Gieß-Walz-Verbundanlage

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US20010007200A1 (en) 2000-01-10 2001-07-12 Vai Clecim, Le Polyedre Method and a device for thermal control of the profile of a roll in a mill
EP1279445A1 (fr) * 2001-03-16 2003-01-29 Nakayama Steel Works, Ltd. Laminoir a chaud et procede de laminage a chaud
WO2005120739A1 (fr) * 2004-06-09 2005-12-22 Sms Demag Ag Procede et cage de laminoir pour laminer a froid une matiere metallique a laminer, en particulier un feuillard, ladite cage etant pourvue de buses destinees a pulveriser des agents de traitement gazeux ou liquides
WO2006076777A1 (fr) 2005-01-24 2006-07-27 Orica Explosives Technology Pty Ltd Ensembles détonateur sans fil et réseaux correspondants
WO2008145222A1 (fr) 2007-05-30 2008-12-04 Sms Siemag Ag Dispositif pour influer sur la répartition de température sur une largeur
DE102009040876A1 (de) * 2008-11-18 2010-05-20 Sms Siemag Ag Vorrichtung zum Kühlen einer Walze in einem Walzgerüst
EP3006125A1 (fr) * 2014-10-09 2016-04-13 Josef Fröhling GmbH & Co. KG Laminoir et procede de laminage

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JP4460147B2 (ja) * 2000-12-27 2010-05-12 三菱製鋼室蘭特殊鋼株式会社 圧延材の冷却装置
DE102010014346A1 (de) * 2010-04-09 2011-10-13 Sms Siemag Ag Verfahren zum fliegenden Arbeitswalzenwechsel in Gießwalzanlagen und Warmbandstraßen
DE102012216570A1 (de) * 2012-05-11 2013-11-14 Sms Siemag Ag Vorrichtung zum Kühlen von Walzen
EP3208006B1 (fr) * 2016-02-22 2019-04-03 Primetals Technologies Austria GmbH Dispositif de changement de rouleaux en ligne dans une cage de laminoir
CN106269931B (zh) * 2016-10-25 2018-04-06 东北大学 一种热轧无缝钢管在线连续冷却的方法
EP3434383A1 (fr) 2017-07-24 2019-01-30 Primetals Technologies Austria GmbH Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir

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Publication number Priority date Publication date Assignee Title
US20010007200A1 (en) 2000-01-10 2001-07-12 Vai Clecim, Le Polyedre Method and a device for thermal control of the profile of a roll in a mill
EP1279445A1 (fr) * 2001-03-16 2003-01-29 Nakayama Steel Works, Ltd. Laminoir a chaud et procede de laminage a chaud
WO2005120739A1 (fr) * 2004-06-09 2005-12-22 Sms Demag Ag Procede et cage de laminoir pour laminer a froid une matiere metallique a laminer, en particulier un feuillard, ladite cage etant pourvue de buses destinees a pulveriser des agents de traitement gazeux ou liquides
WO2006076777A1 (fr) 2005-01-24 2006-07-27 Orica Explosives Technology Pty Ltd Ensembles détonateur sans fil et réseaux correspondants
WO2008145222A1 (fr) 2007-05-30 2008-12-04 Sms Siemag Ag Dispositif pour influer sur la répartition de température sur une largeur
DE102009040876A1 (de) * 2008-11-18 2010-05-20 Sms Siemag Ag Vorrichtung zum Kühlen einer Walze in einem Walzgerüst
EP3006125A1 (fr) * 2014-10-09 2016-04-13 Josef Fröhling GmbH & Co. KG Laminoir et procede de laminage

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CN113165037B (zh) 2023-07-07
CN113165037A (zh) 2021-07-23
WO2020126473A1 (fr) 2020-06-25
EP3670011B1 (fr) 2022-09-28

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