EP3208006B1 - Dispositif de changement de rouleaux en ligne dans une cage de laminoir - Google Patents

Dispositif de changement de rouleaux en ligne dans une cage de laminoir Download PDF

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Publication number
EP3208006B1
EP3208006B1 EP16156748.2A EP16156748A EP3208006B1 EP 3208006 B1 EP3208006 B1 EP 3208006B1 EP 16156748 A EP16156748 A EP 16156748A EP 3208006 B1 EP3208006 B1 EP 3208006B1
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EP
European Patent Office
Prior art keywords
roller
working
chocks
additional
stand
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.)
Active
Application number
EP16156748.2A
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German (de)
English (en)
Other versions
EP3208006A1 (fr
Inventor
Albert Feichtner
Heinz Hofer
Bernd Linzer
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
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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.)
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Publication date
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Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP16156748.2A priority Critical patent/EP3208006B1/fr
Priority to PCT/EP2017/051657 priority patent/WO2017144227A1/fr
Priority to CN201780012835.0A priority patent/CN108698097B/zh
Priority to KR1020187027955A priority patent/KR20180117669A/ko
Publication of EP3208006A1 publication Critical patent/EP3208006A1/fr
Application granted granted Critical
Publication of EP3208006B1 publication Critical patent/EP3208006B1/fr
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Classifications

    • 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
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/003—Inactive rolling stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/028—Sixto, six-high stands

Definitions

  • the rolls of rolling stands wear during operation. If the affected rollers have reached a critical level of wear, the rollers must therefore be replaced. Particularly high wear the work rolls of the rolling mills, due to the higher belt speed, in particular the rear mills of the rolling mill.
  • the rolling mill In cold rolling mills, the rolling mill is stopped to replace the rolls.
  • the exchange is therefore easily possible.
  • the slabs can be buffered in a reheating furnace. During buffering, the roll change can be performed.
  • the exchange is also possible without any problems.
  • Lead plant it is possible to discharge the produced slabs between a first rolling train and a second rolling train downstream of the first rolling train and thereby to take the second rolling train out of production.
  • the roll change can be made within the second rolling mill.
  • the produced metal strand can no longer be rolled to the final gauge of a thin wide strip.
  • WO 2011/124 585 A1 is a method for changing work rolls in cast rolling and hot strip mills in which the change of the work rolls is done inline, ie during rolling, so while the belt is running.
  • a strip tension is applied to the metal strip before and / or after entering the roll stand whose work rolls are to be exchanged via at least one hold-down roll which can be introduced into the rolling line.
  • specially shaped rails are arranged in the rolling stand, by means of which during the extraction of the work rolls from the rolling stand, the upper work roll is raised and both work rolls do not touch the metal strip.
  • a disadvantage of this solution is the arrangement of the rails in the rolling stand, ie within an already cramped space. The arrangement is therefore difficult.
  • the object of the present invention is to provide opportunities by means of which inline - ie during operation of the rolling mill - an exchange of work rolls is possible without the disadvantages of the prior Technology to accept. In particular, it should not be necessary to arrange additional elements which could interfere with the operation of the roll stand within the roll stand.
  • the upper work roll becomes prior to joining the upper work roll chocks and the upper auxiliary roll chocks lifted together from the metal strip. Furthermore, in this case, for this purpose, before moving the upper and lower work rolls out of the rolling stand, the lower work roll is brought out of contact with the metal strip. For this purpose, the lower work roll can be lowered. Alternatively or additionally, the metal strip - be raised - for example by means arranged before and after the mill stand looper. However, the lifting of the metal strip must be done only to the extent that the metal strip remains out of contact with the upper work roll.
  • the insertion and advancement of the rails is effected by a drive.
  • the drive can be designed as required as a hydraulic, pneumatic or electric drive.
  • the rails may be shaped as needed provided that they are capable of transferring a lifting force applied to the upper auxiliary roller (s) to the upper work roll (or associated chocks) and further retracting the upper work roll (or mating chocks) ) lead reliably. It is optimal if the rails have a double-T-shaped cross-section. Alternatively, however, the rails may also have a U-shaped, an X-shaped or a C-shaped cross section.
  • the operating-side upper work roll chock has at least one spacer directed towards the operator-side lower work roll chock.
  • the operator-side lower work roll chock has at least one spacer directed toward the operator-side upper work roll chock.
  • the drive-side work roll chocks may also have such spacers. In normal operation, i. When rolling the metal strip, the spacers of the upper and lower work roll chocks dive into recesses of the lower and upper work roll chocks.
  • the upper work roll is not first moved out of the roll stand in the prior art, but only the lower work roll moved out by a first part length from the roll stand.
  • the spacers can no longer immerse themselves in the said recesses. Instead, they rest on the respective other work roll chock or dip into another recess, which, however, has only a small depth.
  • the arrangement of the drive-side spacers can alternatively be done by manual insertion or automated.
  • a key or the like can be actuated, which can cause an automatic folding up of the drive-side spacers.
  • the upper auxiliary roller has an adjusting means by which the upper auxiliary roller as such -. without a simultaneous process of other rolls - is vertically displaceable in the roll stand.
  • the rolling mill is designed as a quarto scaffolding, which in addition to the work rolls only has support rollers, this is the case.
  • the additional rollers are identical to the support rollers of the rolling stand.
  • the roll stand further comprises an upper roll disposed above the upper auxiliary roll, the upper auxiliary roll is thus formed as an upper intermediate roll.
  • a typical example of a rolling stand in which this is the case, is a so-called Sextogerüst.
  • connection of the upper auxiliary roller with the upper support roller is thus effected in the case of a Sextogerüsts approach in the same manner as the connection of the upper work roll with the upper auxiliary roller.
  • One difference, however, is that the intermediate roll is not moved laterally out of the roll stand.
  • the connecting elements for connecting the chocks of the upper support roller and the upper auxiliary roller can therefore be made simpler than the connecting elements for connecting the chocks of the upper auxiliary roller and the upper work roll.
  • a rolling stand arrangement of the type mentioned at the beginning is configured in that the upper work roll chocks and the upper auxiliary roll chocks have recesses for receiving connecting elements by means of which any vertical movement of the upper supplementary roll chocks is transferred to the upper work roll chocks.
  • one rolling mill has several rolling stands.
  • the number of rolling stands can vary. Is shown in FIG. 1 a rolling mill with four rolling stands, which are designated below by the reference numerals 1 to 4. However, alternatively, a different number of rolling stands may also be present, in particular 2, 3, 5, 6, 7 or 8 rolling stands.
  • a metal strip 5 is rolled.
  • the metal strip 5 may be, for example, a steel strip or an aluminum strip.
  • the rolling in the rolling train is usually a hot rolling. Often the rolling mill is according to the schematic representation in FIG FIG. 1 continue upstream of a continuous casting machine. However, this is of minor importance in the context of the present invention.
  • the rolling train is controlled by a control device 6.
  • the control device 6 is designed as a software programmable control device.
  • the control device 6 is programmed with a computer program 7.
  • the computer program 7 comprises machine code 8, which can be processed directly by the control device 6.
  • the rolling mills 1 to 4 of the rolling train is followed by a thickness measuring device 9.
  • the thickness measuring device 9 By means of the thickness measuring device 9, the final thickness d of the metal strip 5 is detected. The corresponding measured value is supplied to the control device 6.
  • the control device 6 then corrects as needed, the control of actuators 10 to 13, of which the rolling stands 1 to 4 are set.
  • the present invention will be explained below in connection with the last rolling stand 4 of the four-stand rolling train.
  • the corresponding embodiments are also valid for the other rolling stands 1 to 3 of the rolling mill.
  • the embodiments are also valid if the rolling train has a different number of rolling stands 1 to 4, for example 6 or 7 rolling stands.
  • an upper work roll 14 and a lower work roll 15 of the roll stand 4 must be changed.
  • the rolling stand 4 is driven by appropriate control of the actuator 13, so that the work rolls 14, 15 no longer roll the metal strip 5 and even no longer contact.
  • the metal strip 5 thus passes through the rolling mill 4, without touching its work rolls 14, 15.
  • the driving of the roll stand 4 can be connected to a load redistribution from the rolling stand 4 to the other rolling stands 1 to 3. Alternatively, the loads of the other rolling stands 1 to 3 can be maintained. Which of these two approaches is taken is of minor importance in the context of the present invention. It is crucial that the rolling stand 4 merges with the drive-up for roll change in a special operation, namely the roll change operation. If the rolling train, as is the case in a cast-rolling composite plant, is preceded by the continuous casting machine, a casting speed of the continuous casting machine can furthermore be reduced.
  • the rolling stand 4 has, in addition to the work rolls 14, 15, between which the metal strip 5 is passed, an upper auxiliary roll 16 and a lower auxiliary roll 17.
  • the upper auxiliary roller 16 is disposed above the upper work roll 14, the lower auxiliary roll 17 below the lower work roll 15.
  • the roll stand 4 in addition to said rollers 14 to 17 no further rolls.
  • the rolling stand 4 is formed as a so-called quarto structure (4-high), in which the additional rollers 16, 17 are backup rollers of the rolling stand 4.
  • additional rollers 16, 17 also separate support rollers may be present, which are arranged above and below the additional rollers 16, 17.
  • the additional rollers 16, 17 intermediate rollers of a so-called Sextogerüsts (6-high).
  • the rollers 14 to 17 are mounted in a roll stand 18.
  • the rolling mill stand 18 has an operating-side upright element 19 and a drive-side upright element 20.
  • the upper work roll 14 is mounted in the operating-side upright element 19 via an upper work roll chock 21 on the operator side and in the drive-side upright element 20 via a drive-side upper work roll chock 22 on the drive side.
  • the upper auxiliary roller 16 is mounted via an upper side additional roll chock 23 in the operator-side upright element 19 and via a drive-side upper additional roll chock 24 in the drive-side upright element 20.
  • the storage of the upper work roll 14 and the upper auxiliary roll 16 in the roll stand 18 is in a conventional manner such that the upper work roll 14 and the upper auxiliary roll 16 are vertically displaceable in the roll stand 18.
  • the corresponding roll chocks 21 to 24 may be mounted in plain bearings.
  • the lower work roll 15 is mounted in the drive-side upright element 19 via an operating lower work roll chock 25 in the service-side upright element 19 and via a drive-side lower work roll chock 26 in the drive-side upright element 20.
  • the lower auxiliary roller 17 is mounted on the lower side of an auxiliary roller chock 27 in the service-side upright element 19 and on a drive-side lower additional roller chock 28 in the drive-side upright element 20. It is possible that the lower work roll 15 and the lower auxiliary roll 17 are vertically displaceable analogously to the upper work roll 14 and the upper auxiliary roll 16 in the roll stand 18.
  • the associated adjusting device which is not shown in the FIG, may be formed in particular as an electromechanical or as a hydraulic adjusting device. Alternatively, the lower work roll 15 and the lower auxiliary roll 17 may be arranged vertically immovable in the roll stand 18.
  • the actuator 13 for the roll stand 4 is usually divided into an operating-side adjusting device 29 and a drive-side adjusting device 30.
  • Each of the two adjusting devices 29, 30 is usually designed as a hydraulic cylinder unit. Alternatively, a configuration as an electromechanical drive is possible.
  • the adjusting devices 29, 30 usually act on the upper support roller of the roll stand 4. You can both raise and lower the support roller. So you can exert forces in both directions on the support roller. In a quartz scaffolding, the adjusting devices 29, 30 thus act directly on the upper auxiliary roller 16 (or the associated chocks 23, 24). In the case of a sexto scaffolding, the adjusting devices 29, 30 act indirectly on the upper auxiliary roller 16 via the upper support roller.
  • the upper auxiliary roller 16 is usually guided freely in the rolling stand stand 18 in this case. Therefore, only a compressive force, but not a lifting force can be exerted on the upper auxiliary roller 16 via the adjusting devices 29, 30 and the upper support roller.
  • the adjusting devices 29, 30 generally have a relatively large adjustment stroke, for example from 200 to 350 mm.
  • an operating-side adjusting device 31 and a drive-side adjusting device 32 are generally associated with the work rolls 14, 15.
  • the adjusting devices 31, 32 usually act on the work roll chocks 21, 22, 25, 26 of both work rolls 14, 15. They are also usually designed as hydraulic cylinder units. Alternatively, a configuration as an electromechanical drive is also possible here.
  • the adjusting devices 31, 32 generally have a relatively small adjustment stroke, for example 80-250 mm.
  • FIG. 6 The removal of the work rolls 14, 15 from the rolling stand 4 is subsequently starting with FIG. 6 explained.
  • FIG. 6 are here - as well as in the FIGS. 7 to 18 -
  • the work rolls 14, 15 and the additional rollers 16, 17 not shown. However, this only serves to the FIGS. 6 to 18 not to overload.
  • the work rolls 14, 15 and the additional rollers 16, 17 of course exist.
  • the following is several times the speech that the upper work roll 14 and / or the upper auxiliary roller 16 are moved to certain positions. Strictly speaking, of course, the associated chocks 21 to 24 are moved. Due to the fact that the respective roller 14, 16 is mounted in the associated chocks 21 to 24 and therefore a method of the chocks 21 to 24 always corresponds to a corresponding method of the associated roller 14, 16, the formulation is equivalent, however.
  • the rolling stand 4 is first opened.
  • the rolling gap formed by the roll stand 4 or its work rolls 14, 15 is therefore raised.
  • at least the upper work roll 14 is lifted off the metal strip 5, so that the upper work roll 14 no longer contacts the metal strip 5.
  • the upper work roll chocks 21, 22 and the upper auxiliary roll chocks 23, 24 are connected together such that any vertical movement of the upper auxiliary roll chocks 23, 24 is transferred to the upper work roll chocks 21, 22.
  • an auxiliary device 33 can be present on the side of the rolling stand 4 -in general on the drive side, but in rare cases alternatively on the operating side-on which or on the connecting elements 34, 35 are arranged.
  • the connecting elements 34, 35 are in this case as shown in the FIGS. 6 and 7 in corresponding recesses 36 of the upper additional roll chocks 23, 24 and the upper work roll chocks 21, 22 inserted. Thereafter, the upper auxiliary roller 16 is moved upward to a first defined additional roller position pZ1. This condition is in FIG. 8 shown. In this positioning pZ1 are then as shown in FIG. 9 the upper and lower work rolls 14, 15 are moved out of the roll stand 18.
  • the lower work roll 15 may no longer contact the metal strip 5.
  • this is achieved in that simultaneously with the lifting of the upper work roll 14 of the metal strip 5 and the lower work roll 15 is brought out of contact with the metal strip 5, either by lowering the lower work roll 15, or by lifting the metal strip 5, be it through a combination of these measures.
  • these actions will be carried out at a later date. However, they must be performed in any case, before starting to move out the work rolls 14, 15 from the roll stand 18.
  • the connecting elements 34, 35 as shown in FIGS FIG. 6, 8 and 9 in particular be designed as rails 34, 35.
  • first the upper auxiliary roll 16 in the vertical direction to a second defined additional roll position pZ2 and the upper work roll 14 in the vertical direction to a Defined work roll position pA proceed.
  • the method of the upper auxiliary roller 16 is effected by the adjusting devices 29, 30.
  • the process of the upper work roll 14 is effected by means of the adjusting means 31, 32.
  • FIG. 6 shows an intermediate state during the insertion of the rails 34, 35, FIG.
  • the drive 37 is part of the auxiliary device 33. It may be designed in particular as an electric drive. Alternatively it can be designed as a hydraulic or pneumatic drive.
  • the drive 37 may be arranged downstream of a transmission, in particular a worm gear.
  • the rails 34, 35 can as shown in the FIG. 7 in particular have a double-T-shaped cross-section. This embodiment is particularly preferred.
  • the rails 34, 35 may have a U-shaped or a C-shaped cross section.
  • the recesses 36 may alternatively have an X-shaped cross-section.
  • the X-shaped cross section may include horizontally extending cantilevers.
  • the lower work roll 15 may not contact the metal strip 5. However, this can be readily ensured. For example, it may be possible to lower the lower work roll 15 downwards so that it no longer contacts the metal strip 5. Even if a lowering of the lower work roll 15 is not possible or is not possible to a sufficient extent, however, it can be ensured that the lower work roll 15 no longer contacts the metal strip 5.
  • looper 38 may be arranged. In this case, by means of the loop lifter 38, a height position on which the metal strip 5 passes through the roll stand 4, be adjusted accordingly. This is known and familiar to experts.
  • the operating-side work roll chocks 21, 25 each have at least one to the other operating side work roll chock 25, 21 directed towards driving pins 39, 41.
  • the work roll chocks 21, 25 further comprise recesses 40, 42. In normal operation - ie when rolling the metal strip 5 - are the operator-side work roll chocks 21, 25 one above the other.
  • the recesses 40, 42 are arranged such that in this state, the driving pins 39, 41 in the recesses 40, 42 of the other operating side work roll chock 25, 21 dive and thus do not interfere with normal operation.
  • the operating-side lower work roll chock 25 may have a coupling device 43 in which an extension element 44 engages.
  • the upper work roll 14 is not (yet) moved out of the rolling stand 18 in this case.
  • FIG. 15 shows the corresponding state.
  • the first part length l1 is as shown in FIG FIG. 15 determined such that the at least one driving pin 39 of the operator-side upper work roll chock 21 is disposed directly above the at least one driving pin 41 of the operating side lower work roll chock 25.
  • the upper auxiliary roller 16 as in FIG. 15 indicated by an arrow B, moved down to a third defined additional roller position pZ3.
  • the third defined additional roller position pZ3 is a different position from the first defined additional roller position pZ1. It can (but does not have to) be equal to the second defined additional roll position zP2.
  • the driving pins 39, 41 have mutually cooperating contours, so that the driving pins 39, 41 engage in one another.
  • one of the driving pins 41 may have a (relatively flat) recess 46 into which the other driving pin 39 dips.
  • the driving pins 39, 41 After merging the driving pins 39, 41, the driving pins 39, 41, therefore, a tensile force acting in the direction of the axis of rotation of the work rolls 14, 15 on the operator-side lower work roll chock 25, transmitted to the operator-side upper work roll chock 21. Due to the meshing of the driving pins 39, 41 is thus now in the horizontal direction, the movement of the upper work roll 14 is coupled to the movement of the lower work roll 15.
  • the lower work roll 15 is moved out of the roll stand 18 by a second partial length l2 (also different from 0).
  • the upper work roll 14 is also moved out of the rolling stand stand 18 by the second part length l 2 with the lower work roll 15.
  • the upper work roll 14 slides on the rails 34, 35th FIG. 16 shows the corresponding state.
  • the second partial length l2 is as shown in FIG. 16 determined so that the drive-side upper work roll chock 22 has indeed exited from the mill stand 18, but is still held by the rails 34, 35.
  • Drive-side spacers 45 between the drive-side work roll chocks 22, 26 are arranged.
  • the arrangement of the drive-side spacers 45 can be done manually or automatically. In either case, the drive side spacers 45 may be incorporated in one of the two work roll chocks 22, 26 or may be separate elements. Then, the lower work roll 15 and with it the upper work roll 14 according to FIG. 17 completely moved out of the rolling mill stand 18.
  • the arrangement of the drive-side spacers 45 can be done by manual insertion. Also, a mechanical actuation of a lever or the like is possible. Alternatively, the placing can be fully automatic or semi-automatic (by operation of a key or the like by an operator). In the case of actuation by means of a lever or an automatic arrangement, in particular, as shown in FIG FIG. 18 be provided that the drive-side spacer 45 folds up or fold up the drive-side spacers 45.
  • the expression of the work rolls 14, 15 located in the roll stand 4 and the expression of the work rolls to be newly installed can be as required.
  • the work rolls 14, 15 located in the roll stand 4 and / or the work rolls to be newly installed can have a texture, for example a corrugation.
  • the roll stand 4 In normal operation, the roll stand 4 is active, that is, it rolls the metal strip 5. It is therefore also possible in particular, as shown in FIG. 1 by means of the roll stand 4 for upstream rolling stand 3 to exert a train Z on the metal strip 5.
  • the train Z is particularly required to ensure stability of the rolling process.
  • the rolling stand 4 is raised. The rolling stand 4 can not exert any tension on the metal strip 5 in this state.
  • the rolling mill 4 is shown in FIG FIG. 1 a driver 47 downstream.
  • the driver 47 may be the thickness gauge 9 as shown in FIG FIG. 1 be upstream. Alternatively, the driver 47 may be arranged downstream of the thickness measuring device 9.
  • the driver 47 may, for example, immediately behind the last mill stand 4 of the rolling mill. If the rolling train is followed by a cooling section, the driver 47 can also be arranged behind the cooling section.
  • the driver 47 acts in roll change operation, the metal strip 5 on the outlet side of the roll stand 4 with a defined train Z. Applying the train Z by the driver 47 when driving the rolling stand 4 can be done bumpless.
  • the driver 47 causes no plastic cross-section reduction of the metal strip 5.
  • the metal strip 5 thus has the same final thickness d both before and after the driver 47.
  • the value of the train Z is preferably identical to the train Z, which is previously exerted by the rolling stand 4 on the metal strip 5 in normal operation. Due to the fact that the rolling stand 4 has moved up in roll changing operation, however, the train Z propagates through the rolling stand 4 to the upstream rolling stand 3. This applies until the roll stand 4 is taken over again after the change of the work rolls 14, 15 in the active operation. In this case, it is possible for the train Z to be transferred bum-free from the rolling stand 4 during the closing of the roll gap of the roll stand 4.
  • the present invention has been explained so far for the last roll stand 4 of the rolling train.
  • the procedure according to the invention for changing the work rolls 14, 15 is also in the case of other rolling stands 1 to 3 possible.
  • the procedure is identical to the procedure with respect to the roll stand 4.
  • the work rolls 14, 15 of one of the front rolling stands 1 to 3 - for example of the penultimate roll stand 3 - without at the same time the work rolls 14, 15 of the respective rolling mill 1 to 3 downstream rolling stands 2 to 4 - for example last rolling mill 4 - to change.
  • the rolling stands 1 to 4 are driven sequentially in succession counter to the strip running direction and the subsequent closing of the rolling stands 1 to 4 sequentially in the strip running direction.
  • the change of the work rolls 14, 15 of the rolling stands 1 to 4 can be done in principle in any order.
  • the strip running direction that is, first the work rolls 14, 15 of the last stand 4 are changed, then the work rolls 14, 15 of the penultimate stand 3, etc.
  • the present invention thus relates to the following facts: For removing work rolls 14, 15 from a roll stand, which further comprises an additional roll 16, 17 above and below the work rolls 14, 15, first the upper work roll chocks 21, 22 and the upper additional roll chocks 23, 24 are connected together, so that each Vertical movement of the upper additional roll chocks 23, 24 is transmitted to the upper work roll chocks 21, 22. Thereafter, the upper auxiliary roller 16 is moved upward to a first defined additional roller position pZ1. Then, the upper and lower work rolls 14, 15 are moved out of the roll stand 18.
  • the present invention has many advantages. In particular, it is easily possible to quickly inline a change the work rolls 14, 15 make. A contact of the metal strip 5 with the work rolls 14, 15 during the change of the work rolls 14, 15 - especially at the beginning of the removal of the work rolls 14, 15 and at the end of the installation of the new work rolls - can be reliably avoided.
  • the complexity of rolling stand 1 to 4 need not be increased. There are no elements permanently in the rolling stand 1 to 4 are arranged, which are not needed anyway for the operation of the roll stand 1 to 4. Also, a distance of the rolling stands 1 to 4 from each other need not be increased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (13)

  1. Procédé de démontage de cylindres de travail (14, 15) d'une cage de laminoir (4),
    - dans lequel la cage de laminoir (4) comprend un cylindre de travail supérieur et un cylindre de travail inférieur (14, 15) entre lesquels on fait passer une bande métallique (5),
    - dans lequel la cage de laminoir (4) comprend, en outre, un cylindre supplémentaire supérieur (16) situé au-dessus du cylindre de travail supérieur (14) et un cylindre supplémentaire inférieur (17) situé au-dessous du cylindre de travail inférieur (15),
    - dans lequel le cylindre de travail supérieur (14) est supporté dans un montant de cage de laminoir (18) de la cage de laminoir (4) par une empoise de cylindre de travail supérieur (21, 22) côté manoeuvre et côté entraînement respectivement,
    - dans lequel le cylindre supplémentaire supérieur (16) est supporté dans le montant de cage de laminoir (18) par une empoise de cylindre supplémentaire supérieur (23, 24) côté manoeuvre et côté entraînement respectivement,
    - dans lequel le cylindre de travail supérieur (14) et le cylindre supplémentaire supérieur (16) peuvent être déplacés verticalement dans le montant de cage de laminoir (18),
    - dans lequel le cylindre de travail inférieur (15) est supporté dans le montant de cage de laminoir (18) par une empoise de cylindre de travail inférieur (25, 26) côté manoeuvre et côté entraînement respectivement,
    - dans lequel le cylindre supplémentaire inférieur (17) est supporté dans le montant de cage de laminoir (18) par une empoise de cylindre supplémentaire inférieur (27, 28) côté manoeuvre et côté entraînement respectivement, caractérisé en ce que, pour démonter les cylindres de travail (14, 15),
    - les empoises de cylindre de travail supérieur (21, 22) et les empoises de cylindre supplémentaire supérieur (23, 24) sont tout d'abord reliées entre elles de sorte que chaque mouvement vertical des empoises de cylindre supplémentaire supérieur (23, 24) est transmis aux empoises de cylindre de travail supérieur (21, 22),
    - le cylindre supplémentaire supérieur (16) est ensuite déplacé vers le haut vers une première position de cylindre supplémentaire (pZ1) définie, et
    - les cylindres de travail supérieur et inférieur (14, 15) sont ensuite retirés du montant de cage de laminoir (18).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la bande métallique (5) traverse la cage de laminoir pendant le démontage des cylindres de travail (14, 15) et en ce que le cylindre de travail supérieur (14) est enlevé de la bande métallique (5) avant que les empoises de cylindre de travail supérieur (21, 22) et les empoises de cylindre supplémentaire supérieur (23, 24) soient reliées entre elles.
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    le cylindre de travail inférieur (15) est mis hors de contact d'avec la bande métallique (5) avant le retrait des cylindres de travail supérieur et inférieur (14, 15) de la cage de laminoir.
  4. Procédé selon la revendication 1, 2 ou 3,
    caractérisé en ce que,
    pour relier les empoises de cylindre de travail supérieur (21, 22) et les empoises de cylindre supplémentaire supérieur (23, 24) entre elles,
    - tout d'abord, le cylindre supplémentaire supérieur (16) est déplacé dans la direction verticale vers une deuxième position de cylindre supplémentaire (pZ2) définie et le cylindre de travail supérieur (14) est déplacé dans la direction verticale vers une position de cylindre de travail (pA) définie, et
    - ensuite, des rails (34, 35) sont tout d'abord introduits dans l'une des empoises de cylindre supérieur (22, 21) et dans l'empoise de cylindre supplémentaire supérieur (24, 23) correspondante et l'introduction des rails (34, 35) se poursuit jusqu'à ce que les rails (34, 35) soient introduits également, en plus, dans l'autre empoise de cylindre de travail supérieur (21, 22) et dans l'empoise de cylindre supplémentaire supérieur (23, 24) correspondante.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    l'introduction et la poursuite de l'introduction des rails (34, 35) sont effectuées par un entraînement (37).
  6. Procédé selon la revendication 4 ou 5,
    caractérisé
    - en ce que les empoises de cylindre de travail côté manoeuvre (21, 25) sont pourvues chacune d'au moins un tourillon d'entraînement (39, 41) dirigé vers l'autre empoise de cylindre de travail côté manoeuvre (25, 21) respective,
    - en ce que, pour retirer les cylindres de travail (14, 15), le cylindre de travail supérieur (14) n'est tout d'abord pas retiré du montant de cage de laminoir (18) et le cylindre de travail inférieur (15) est sorti d'une première longueur partielle (11) du montant de cage de laminoir (18) de façon que les tourillons d'entraînement (39, 41) des empoises de cylindre de travail côté manoeuvre (21, 25) soit disposés directement l'un au-dessus de l'autre,
    - en ce que, en déplaçant ensuite le cylindre supplémentaire supérieur (16) vers le bas vers une troisième position de cylindre supplémentaire (pZ3) définie, les tourillons d'entraînement (39, 41) sont réunis de manière à s'engager l'un dans l'autre,
    - en ce que le cylindre de travail inférieur (15) et, avec lui, le cylindre de travail supérieur (14) sont ensuite sortis d'une seconde longueur partielle (12) du montant de cage de laminoir (18) de façon que l'empoise de cylindre de travail supérieur côté entraînement (22) soit encore soutenue par les rails (34, 35),
    - en ce que des entretoises côté entraînement (45) sont ensuite placées entre les empoises de cylindre de travail côté entraînement (22, 26), et
    - en ce que le cylindre de travail inférieur (15) et, avec lui, le cylindre de travail supérieur (14) sont ensuite complètement retirés du montant de cage de laminoir (18).
  7. Procédé selon la revendication 6,
    caractérisé en ce que
    la mise en place des entretoises côté entraînement (45) s'effectue par insertion manuelle ou de manière automatisée.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le cylindre supplémentaire supérieur (16) est pourvu d'un dispositif de réglage (29, 30) au moyen duquel le cylindre supplémentaire supérieur (16) en tant que tel peut être déplacé verticalement dans le montant de cage de laminoir (18) .
  9. Structure de cage de laminoir,
    - la structure de cage de laminoir comprenant une cage de laminoir (4) pour le laminage d'une bande métallique (5),
    - la cage de laminoir (4) comprenant un cylindre de travail supérieur et un cylindre de travail inférieur (14, 15) entre lesquels on fait passer une bande métallique (5),
    - la cage de laminoir (4) comprenant, en outre, un cylindre supplémentaire supérieur (16) situé au-dessus du cylindre de travail supérieur (14) et un cylindre supplémentaire inférieur (17) situé au-dessous du cylindre de travail inférieur (15),
    - le cylindre de travail supérieur (14) étant supporté dans un montant de cage de laminoir (18) de la cage de laminoir (4) par une empoise de cylindre de travail supérieur (21, 22) côté manoeuvre et côté entraînement respectivement,
    - le cylindre supplémentaire supérieur (16) étant supporté dans le montant de cage de laminoir (18) par une empoise de cylindre supplémentaire supérieur (23, 24) côté manoeuvre et côté entraînement respectivement,
    - le cylindre de travail supérieur (14) et le cylindre supplémentaire supérieur (16) pouvant être déplacés verticalement dans le montant de cage de laminoir (18),
    - le cylindre de travail inférieur (15) étant supporté dans le montant de cage de laminoir (18) par une empoise de cylindre de travail inférieur (25, 26) côté manoeuvre et côté entraînement respectivement,
    caractérisée en ce que le cylindre supplémentaire inférieur (17) est supporté dans le montant de cage de laminoir (18) par une empoise de cylindre supplémentaire inférieur (27, 28) côté manoeuvre et côté entraînement respectivement,
    - les empoises de cylindre de travail supérieur (21, 22) et les empoises de cylindre supplémentaire supérieur (23, 24) comportant des évidements (36) pour la réception d'éléments de liaison (34, 35) au moyen desquels chaque mouvement vertical des empoises de cylindre supplémentaire supérieur (23, 24) est transmis aux empoises de cylindre de travail supérieur (21, 22).
  10. Structure de cage de laminoir selon la revendication 9, caractérisée
    - en ce que la structure de cage de laminoir comprend un dispositif auxiliaire (33) disposé près de la cage de laminoir (4), au niveau duquel les éléments de liaison (34, 35) sont agencés,
    - en ce que les éléments de liaison (34, 35) sont exécutés en tant que rails, et
    - en ce que le dispositif auxiliaire (33) comporte au moins un entraînement (37) au moyen duquel les rails (34, 35) sont tout d'abord introduits dans l'une des empoises de cylindre supérieur (22, 21) et dans l'empoise de cylindre supplémentaire supérieur (24, 23) correspondante et l'introduction des rails (34, 35) se poursuit jusqu'à ce que les rails (34, 35) soient introduits également, en plus, dans l'autre empoise de cylindre de travail supérieur (21, 22) et dans l'empoise de cylindre supplémentaire supérieur (23, 24) correspondante, dès lors que le cylindre supplémentaire supérieur (16) est déplacé dans la direction verticale vers une deuxième position de cylindre supplémentaire (pZ2) défini et que le cylindre de travail supérieur (14) est déplacé dans la direction verticale vers une position de cylindre de travail (pA) définie.
  11. Structure de cage de laminoir selon la revendication 9 ou 10,
    caractérisée
    - en ce que les empoises de cylindre de travail côté manoeuvre (21, 25) sont pourvues chacune d'au moins un tourillon d'entraînement (39, 41) dirigé vers l'autre empoise de cylindre de travail côté manoeuvre (25, 21) respective,
    - en ce que les tourillons d'entraînement (39, 41) des empoises de cylindre de travail côté manoeuvre (21, 25) sont disposés directement l'un au-dessus de l'autre, dès lors que le cylindre de travail supérieur (14) n'est pas retiré du montant de cage de laminoir (18) et que le cylindre de travail inférieur (15) est sorti d'une première longueur partielle (11) du montant de cage de laminoir (18), et
    - en ce que les tourillons d'entraînement (39, 41) s'engagent l'un dans l'autre, dès lors que le cylindre supplémentaire supérieur (16) est déplacé vers le bas vers une troisième position de cylindre supplémentaire (pZ3) définie après le retrait du cylindre de travail inférieur (15) de la première longueur partielle (11).
  12. Structure de cage de laminoir selon la revendication 11,
    caractérisée en ce que
    la structure de cage de laminoir comprend des entretoises côté entraînement (45) qui sont placées de manière automatisée entre les empoises de cylindre de travail côté entraînement (22, 26) lors du démontage des cylindres de travail (14, 15).
  13. Structure de cage de laminoir selon l'une des revendications 9 à 12,
    caractérisée en ce que
    le cylindre supplémentaire supérieur (16) est pourvu d'un dispositif de réglage (29, 30) au moyen duquel le cylindre supplémentaire supérieur (16) en tant que tel peut être déplacé verticalement dans le montant de cage de laminoir (18) .
EP16156748.2A 2016-02-22 2016-02-22 Dispositif de changement de rouleaux en ligne dans une cage de laminoir Active EP3208006B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16156748.2A EP3208006B1 (fr) 2016-02-22 2016-02-22 Dispositif de changement de rouleaux en ligne dans une cage de laminoir
PCT/EP2017/051657 WO2017144227A1 (fr) 2016-02-22 2017-01-26 Remplacement en ligne de cylindres pour structure de cage de laminoir simple
CN201780012835.0A CN108698097B (zh) 2016-02-22 2017-01-26 在轧机机架结构简单的情况下的在线式换辊
KR1020187027955A KR20180117669A (ko) 2016-02-22 2017-01-26 단순 롤 스탠드 구조에서 인라인 롤 교체

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16156748.2A EP3208006B1 (fr) 2016-02-22 2016-02-22 Dispositif de changement de rouleaux en ligne dans une cage de laminoir

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EP3208006A1 EP3208006A1 (fr) 2017-08-23
EP3208006B1 true EP3208006B1 (fr) 2019-04-03

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KR (1) KR20180117669A (fr)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670011B1 (fr) * 2018-12-21 2022-09-28 Primetals Technologies Austria GmbH Refroidissement de la bande métallique dans une cage de laminoir
EP3851217B1 (fr) 2020-01-15 2022-07-13 Primetals Technologies Germany GmbH Adaptation améliorée d'un modèle de cylindre

Citations (9)

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JPS5736005A (ja) 1980-08-15 1982-02-26 Hitachi Ltd Atsuenkinoroorukumikaesochi
JPS5764406A (en) 1980-10-07 1982-04-19 Kawasaki Steel Corp Rearranging method for work roll of rolling mill
JPS57156820A (en) 1981-03-23 1982-09-28 Hitachi Ltd Roll exchanging device
JPS5970412A (ja) 1982-10-15 1984-04-20 Sumitomo Metal Ind Ltd ロ−ル組替方法
JPS5985310A (ja) 1982-11-08 1984-05-17 Hitachi Ltd 圧延機
JPS5985311A (ja) 1982-11-08 1984-05-17 Hitachi Ltd 六段圧延機のロ−ル組替方法
DE10116988A1 (de) 2001-04-05 2002-10-10 Sms Demag Ag Walzgerüst
DE10163373C1 (de) 2001-12-22 2003-02-27 Masch Und Werkzeugbau Gmbh Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst
CN104858238A (zh) 2015-05-26 2015-08-26 中冶陕压重工设备有限公司 轧机工作辊换辊结构

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TWI288676B (en) 2002-07-06 2007-10-21 Sms Demag Ag Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely cut as required after solidification
DE102010014346A1 (de) 2010-04-09 2011-10-13 Sms Siemag Ag Verfahren zum fliegenden Arbeitswalzenwechsel in Gießwalzanlagen und Warmbandstraßen
CN104741382A (zh) * 2015-03-30 2015-07-01 中国重型机械研究院股份公司 一种轧机工作辊换辊装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736005A (ja) 1980-08-15 1982-02-26 Hitachi Ltd Atsuenkinoroorukumikaesochi
JPS5764406A (en) 1980-10-07 1982-04-19 Kawasaki Steel Corp Rearranging method for work roll of rolling mill
JPS57156820A (en) 1981-03-23 1982-09-28 Hitachi Ltd Roll exchanging device
JPS5970412A (ja) 1982-10-15 1984-04-20 Sumitomo Metal Ind Ltd ロ−ル組替方法
JPS5985310A (ja) 1982-11-08 1984-05-17 Hitachi Ltd 圧延機
JPS5985311A (ja) 1982-11-08 1984-05-17 Hitachi Ltd 六段圧延機のロ−ル組替方法
DE10116988A1 (de) 2001-04-05 2002-10-10 Sms Demag Ag Walzgerüst
DE10163373C1 (de) 2001-12-22 2003-02-27 Masch Und Werkzeugbau Gmbh Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst
CN104858238A (zh) 2015-05-26 2015-08-26 中冶陕压重工设备有限公司 轧机工作辊换辊结构

Also Published As

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CN108698097B (zh) 2020-01-07
WO2017144227A1 (fr) 2017-08-31
CN108698097A (zh) 2018-10-23
EP3208006A1 (fr) 2017-08-23
KR20180117669A (ko) 2018-10-29

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