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WO2019170381A1 - Évitement de bords d'usure lors du laminage d'un produit à laminer plat - Google Patents

Évitement de bords d'usure lors du laminage d'un produit à laminer plat Download PDF

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Publication number
WO2019170381A1
WO2019170381A1 PCT/EP2019/053618 EP2019053618W WO2019170381A1 WO 2019170381 A1 WO2019170381 A1 WO 2019170381A1 EP 2019053618 W EP2019053618 W EP 2019053618W WO 2019170381 A1 WO2019170381 A1 WO 2019170381A1
Authority
WO
WIPO (PCT)
Prior art keywords
control device
rollers
rolling
axial position
axial
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.)
Ceased
Application number
PCT/EP2019/053618
Other languages
German (de)
English (en)
Inventor
Andrea Schmidt
Alexander Thekale
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 Germany GmbH
Original Assignee
Primetals Technologies Germany 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 Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to US16/970,078 priority Critical patent/US20210046529A1/en
Priority to CN201980018241.XA priority patent/CN111801173B/zh
Publication of WO2019170381A1 publication Critical patent/WO2019170381A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • 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
    • B21B1/40—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 foils which present special problems, e.g. because of thinness
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack 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
    • B21B1/42—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 step-by-step or planetary rolling
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B21B2261/046—Different thickness in width direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/14—Roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/04—Work roll bending
    • 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

Definitions

  • the present invention is based on a method for rolling a flat rolled stock in a roll stand, wherein the roll stand has at least one pair of rolls, wherein the flat rolled material is located between the two rolls, where the rolls are axially displaceable in opposite directions, wherein the rolling stand a Bending system for the rollers,
  • a control device of the roll stand for controlling the roll gap contour as adjusting mechanisms, the bending and the axial displacement of the rollers
  • control device before rolling a respective rolling determines a respective axial position as a resultant axial position and the rolling stand as the axial position of the rollers for rolling the next flat rolled material before.
  • the present invention is further based on a control program for a control device for controlling a rolling stand, the control program comprising machine code that can be executed by the control device, wherein the processing of the machine code by the control device causes the control device to carry out such a method ,
  • the present invention is further based on a control device for a rolling stand, wherein the control device is designed in such a way that it carries out such a method during operation, in particular with such a control program.
  • the present invention is further based on a rolling stand for rolling a flat rolled stock,
  • the roll stand has at least one pair of rolls
  • the flat rolling stock being between the two rolls
  • rollers are axially displaceable in opposite directions
  • the rolling mill is controlled by such a control device.
  • the quality of the surface and the contour of the rolling stock transverse to the rolling direction are decisive parameters for a flat rolling stock.
  • further processing steps which take place after rolling make certain demands on the observance in particular of a desired contour of the flat rolled good, i. the thickness profile as a function of the width of the flat rolling stock.
  • An essential influencing factor for the contour of the flat rolled stock is the contour of the surfaces of the rolls of the rolling stand.
  • This contour consists essentially of three Be constituents together, namely on the one hand, the roll grinding ei ner respective roller, on the other hand, the thermal expansion of the respective roller and finally the wear of each respective roller.
  • the wear on the rolling stock edge of the strip ie at the edges of the flat rolled stock
  • measures must often be taken to prevent avoid that such steps are embossed into the flat rolling.
  • the production is adjusted.
  • a few rolls are first rolled in the course of a roll trip, which are gradually wider.
  • the Wal zen these rolled goods is used to warm up the roller. Thereafter, only rolled goods are rolled, whose width gradually decreases.
  • This procedure is known in professional circles as so-called coffin lid driving. It has the advantage that the flat rolled goods can be rolled between the wear edges of their predecessors.
  • the object of the present invention is to create possi possibilities, by means of which in particular the United wear in the direction of the axis of rotation of the rolls seen reliably distributed over a sufficiently large area who can and thus at the same time an accumulation of the wear at individual points of the rollers can be reliably counteracted.
  • a method of the type mentioned is configured by
  • control device determines before rolling of the respective rolling stock for a plurality of axial positions of the rollers, how far can be approximated by controlling the adjusting mechanisms, taking into account technological constraints a pre-specified target roll gap contour,
  • control device classifies those axial positions as permissible, in which a deviation of the erge ing roll gap contour of the desired roll gap contour is below half a predetermined barrier
  • the rolling stand is a stand-up frame, that is to say a rolling stand in which, apart from the rolls mentioned, there are no further rolls.
  • the rollers according to the invention are the work rolls of the rolling stand.
  • the rolling stand in addition to the rollers at least supporting rollers, wherein the rollers are each arranged between the support rollers and the rolling stock is.
  • the rolling stand is usually a quarto scaffolding or a sexto scaffolding.
  • a quarto scaffolding is a rolling stand with a total of four superimposed rolls. In this case, only backup rolls are present in addition to the inventive Shen rollers.
  • rollers according to the invention may also be the work rolls of the rolling stand.
  • it may be the inter mediate rolls. It is even possible in the case of a Sextogerüsts that both the work rolls and the intermediate rollers are axially displaceable, so that both the working rollers and the intermediate rollers rollers in the sense of the prior invention are.
  • rollers are provided with a cylindrical Kon structure.
  • present invention shows its full advantages when the rollers are provided with a bottle neck-like curved contour.
  • the control device in particular technologi cal boundary conditions of the rolling stand.
  • Such Randbedingun conditions are, for example, by the limits of Stellme mechanisms and determined by the maximum Verstellgeschwin speeds of the adjusting mechanisms.
  • the setting limits of the setting mechanisms and the maximum possible adjustment speed This may be due to technical reasons or may be restricted by an operator according to the requirements.
  • the nip contour corresponds to the thickness of the flat rolled stock after rolling, spatially resolved over the bandwidth.
  • the thickness of the flat rolling stock is determined over the Bandbrei te at least 5 points, better at least 10 points, for example, at 20 digits or more.
  • the manner in which the controller then determines the actual axial position taken from the remaining axial positions may be as needed.
  • the controller agrees the resulting axial position on a stochastic basis be.
  • This procedure is particularly avoided that - no matter for what reasons - certain axial positions are disproportionately often used and there is zen with wear in particular at the points of further Wal where the resulting rolling stock edges are when rolling the flat rolling stock.
  • control device at least the remaining axial positions on the basis of a Bewer rating criterion assigns a rating and that the control device determines the resulting axial position based on the Bewer device.
  • the control device can determine the evaluation in particular based on technological Krite rien.
  • the locking of axial positions can also be done as needed.
  • control device it is possible for the control device to receive a blocking command from an operator and for the control device then to specify in the blocking command specified axial position. alpositionen locks. As a result, the operator is able, for example due to higher-level technological knowledge, which is not present in the control device, be certain adverse axial positions to lock.
  • the control device further locks the gene axial positions whose distance are in a certain isturgi area around that axial position around, in which the immediately previously rolled flat rolled material is rolled.
  • This ensures that when rolling several fla cher rolling the other rollers are positioned in a relatively large displacement area, so that the wear of the other rollers over a wide range of width of the other rollers is distributed. This increases the service life of the other rollers.
  • the Spotify-agreed range is symmetrical with respect to the axial position, in which the immediately previously rolled flat rolled material is rolled. In this case, the axial position at which the immediately previously rolled flat rolled material is rolled is in the middle of the predetermined range.
  • the area can also be arranged asymmetrically. It is possible that the control means locks those axial positions which are in the predetermined range, only for the respective next to be rolled flat rolling stock. Alternatively, the control device can lock the corresponding axial positions for a plurality of subsequently rolled rolled goods. Furthermore, the control device blocks the corresponding axial positions for a number of flat rolled goods. Thereafter, if so the corresponding number has been rolled on other flat rolled goods, but the Steuerein direction lifts the lock again. This is true regardless of whether the number of flat rolled goods for which the lock has been made is 1 or greater than 1.
  • the blocking of actually classified as permissible Axialpo positions is, as already mentioned, only made if after locking still at least one permissible as a stepped axial position remains.
  • the control device blocks at least the current axial position at which the flat rolling stock rolled immediately before is rolled.
  • the blocking of axial positions by the operator has priority.
  • the prioritization can be fixed or specified by the operator.
  • control program having the features of claim 11. According to the invention causes the execution of the control program that the Steuereinrich device performs an inventive method.
  • control device with the features of claim 12.
  • the control device is designed such that it carries out a method according to the invention.
  • the control device can be programmed with a control program according to the invention.
  • the object is further achieved by a roll stand for rolling a flat rolling stock having the features of claim 13. solves.
  • the rolling stock is controlled by a control device according to the invention.
  • FIG. 2 shows the rolling stand of FIG. 1 from the front
  • FIG. 4 shows the rolling stand of FIG. 3 from the front
  • a flat rolling stock 2 is to be rolled in a rolling stand 1.
  • the rolling mill 1 has at least one pair of rollers 4, 5, between which the flat rolling stock 2 is located.
  • the rolling stand 1 is thus formed as Duogerüst.
  • a pair of backup rollers 3 is also available.
  • the rollers 4, 5 between the support rollers 3 and the flat roller 2 are well arranged.
  • at least work rolls 4 are present, ie rollers that are in operation in direct contact with the flat rolling stock 2.
  • the work rolls 4 can be provided with a certain contour as required. For example, you can be provided with a zy-cylindrical contour. According to the presen- tation in FIG 5, the work rolls 4 are on their bale length provided with a bottle neck curved contour.
  • the like bottle neck contours are in professional circles for example as CVC grinding and SmartCrown grinding be known.
  • the contours of the work rolls 4 complement each other in the load-free state of the roll stand 1 as a rule at ei ner (1) axial position x complementary.
  • the supplement is not complementary and / or occurs only in the loaded state of the rolling stand 1.
  • the curved contours may have chamfers or gradual transitions at their axial ends. Regardless of the specific configuration of the contours of the work rolls 4, the work rolls 4 but each form a parabolic roller gap, the extent of parabolicity in the case of bottle neck-like contours depends on the extent of the axial displacement of the work rolls 4.
  • the rolling mill 1, as shown in FIGS. 1 to 4, furthermore has a bending system 6.
  • the work rolls 4 can be bent in a defined manner in a manner known per se.
  • the bending system 6, in particular the nip a parabola shape can be impressed.
  • the effect of the axial displacement of the work rolls 4 on the one hand and the effect of the bending system 6 on the other side mutually reinforce or gegensei tig compensate, depending on the nature and extent of each control to a sliding system 7, with the work rolls 4 can be moved, and the bending system 6.
  • both systems 6, 7 can thus be adjusted in particular the Walzspaltkon structure.
  • the rolling mill 1 is controlled by a control device 8.
  • the bending system 6 and the sliding system 7 are controlled by the control device 8.
  • the Steuerein device 8 is designed such that it carries out a method in operation, which will be explained in more detail below.
  • the control device 8 can be programmed for this purpose with a control program 9.
  • the control program includes in this case machine code 10, the device 8 can be processed by the control.
  • the execution of the machine code 10 by the controller 8 causes in this case that the controller 8 executes the corresponding procedural ren, which includes in particular the control of the bending system 6 and the sliding system 7.
  • control device 8 determines in one
  • Step S1 for a plurality of axial positions x of the Ar beitswalzen 4 (defined by a respective control of the sliding system 7), through which respective control of the bending system 6, the roll gap contour of a predetermined nominal roll gap contour is approximated optimally.
  • it also determines a quality measure A for the correspondence of the resulting roll gap contour with the desired roll gap contour.
  • the corresponding situation is shown in FIG 7 by a corre sponding quality measure A as a function of the axial positions x.
  • the control device 8 can determine the quality measure A, for example, by means of a cost function.
  • the respective local deviation of the roll gap contour from the set roll gap contour enters into the cost function, in particular at a number of support points across the width of the flat rolled stock 2.
  • the number of supporting points over the width of the flat rolled stock 2, at which the control device 8 determines the respective local deviation of the roll gap contour from the nominal roll gap contour is generally at least 5 points, better at least 10 points.
  • the comparison is even carried out at a considerably larger number, for example at 20, 50 or even more interpolation points.
  • control device 8 can set the axial positions x discretely-for example within the possible displacement range of the work rolls 4 every 5 mm, every 10 mm or every 20 mm-or continuously. In the latter case, as a rule, a determination of the quality measure A is made only for supporting the axial position x. Between the interpolation points, the control device 8 polishes the quality measure A.
  • the controller 8 executes step S1 before rolling the respective flat rolled stock 2 (hereinafter referred to as rolling 2B). In general, the control device 8 continues to execute the step S1 after rolling the rolling stock 2A rolled immediately before.
  • the control device 8 observes technological boundary conditions in the context of the execution of step S1.
  • boundary conditions may consist in particular of the extent to which the bending system 6 and / or the sliding system 7 can be controlled via the main, ie the maximum possible sliding stroke and the maximum possible bending stroke.
  • the boundary conditions may be be that, taking into account a maximum adjustment speed for the sliding system 7, the possible range of axial positions x is limited and / or taking into account a maximum adjustment for the bending system 6 made a restriction on the achievable nip contour becomes.
  • a step S2 the control device 8 determines those axial positions x, at which the quality measure A (based essentially on the deviation of the resulting roll gap contour from the target roll gap contour) is below a predetermined limit MAX. These axial positions x represent the total amount of the allowable axial positions x. In a step S3, the control device 10 then removes axial positions x blocked from the set of permissible axial positions x.
  • the control device 8 can receive a locking command C from an operator 11 (see FIGS. 1 and 3). In this case, the controller 8 inhibits the axial positions x specified in the lock command C. For example, due to the specification of the operator 11, the control device 8 can block the axial position x supplemented with the letter A in FIG.
  • control device 8 as shown in FIG 8 (mind least) a resultant edge 12 of the work rolls 4 ermit mined and checks at which axial position x beitswalzen one of the Ar 4, the resulting edge 12 on a rolling stock edge 13 of the rolling stock 2B to be rolled would be positioned.
  • the control device 8 blocks according to the representation in FIG 7, for example, the supplemented in Figure 7 with the letter B axial position x. It is possible that the control device 8 in the context of determining the resul animal edge 12 only the wear of the work rolls 4 be taken into account. However, the control device 8 preferably determines the resulting edge 12, taking into account the cut, the thermal crowning and / or the wear of the work rolls 4.
  • control device 8 diejeni conditions axial positions x blocks that are in a predetermined range around that axial position x around, in which the immediately previously rolled flat rolling stock 2A - here flat rolling stock 2A - is rolled.
  • the control device 8 can block those axial position x whose distance a is below a minimum distance amin from that axial position x at which the immediately previously rolled flat rolling 2 is rolled. In FIG. 7, these are the axial positions x supplemented with the letter C.
  • the lock as a function of the predetermined range - it is possible that the lock applies only to the flat rolling stock 2 to be rolled next-that is, the flat rolling stock 2B.
  • the controller 8 automatically releases the lock again.
  • the duration of the lock may be a function of the sign and / or amount of the distance a, in particular decreasing with increasing distance a.
  • the extent to which the controller 8 inhibits axial positions x in step S3 may be determined as needed. Irrespective of the extent of the locks, however, the locking is only carried out so far that even after removing the locked axial positions x from the set of permitted axial positions x x remains at least one axial position x, ie at least one axial position x, both allowed as well as not locked.
  • the locking is only carried out so far that even after removing the locked axial positions x from the set of permitted axial positions x x remains at least one axial position x, ie at least one axial position x, both allowed as well as not locked.
  • the axial position x x must not be blocked in step S3, since otherwise no axial position x that would be too loose for the rolling of the flat rolled stock 2 would be available. If, however, the number of permissible axial positions x is greater than 1, at least one (in principle permissible) axial position x is blocked in step S3. However, the locking of axial positions x is performed only to the extent that even then at least one axial position x remains permissible. In the priority case, the axial position x is usually blocked during the locking, in which the flat rolling stock 2, which is rolled immediately before, is rolled - in this case, the flat rolling stock 2A. In principle, however, other prioritizations are possible.
  • the locking of axial positions x is not simply optional, but mandatory, if at all the possibility for blocking axial positions x exists.
  • the Steuereinrich device 8 checks in the context of step S3 so always, whether the number of permissible axial positions x is greater than 1. If this is the case, at least one axial position x ge is blocked. If this is not the case - but only then - the locking of the only permissible axial position x in this case is omitted.
  • a step S4 the controller 8 determines the per spective axial position x, in which the rolling now to be rolled fla che rolling 2 - according to example so the rolling stock 2B - to be rolled.
  • This axial position x is referred to below as re-descending axial position x.
  • the determination of the resulting axial position x is carried out by selecting one of the permissible and at the same time not locked axial positions x. Also, the step S4 is performed before rolling the corresponding rolling stock 2.
  • the manner in which the control device 8 determines the re-increasing axial position x can be done on a stochastic basis.
  • the Steuerein device 8 for the axial positions x based on a rating criterion determine a rating and assign the axial positions x.
  • the controller 8 determines the resultant axial position x from the evaluation. It is sufficient to carry out the determination and assignment of the evaluation only for the remaining axial positions x, ie the permissible and at the same time not locked axial positions x. For even the determination of the resulting axial position x is only taking into account these axial positions x.
  • the rating can be determined as needed.
  • the control device 8 preferably determines the evaluation on the basis of tech nological criteria, in particular the quality measure A.
  • the control device 8 is finally the rolling stand 1 as the axial position x for rolling the flat rolled material 2 - according to example of the rolling stock 2B - the resulting axial position x before x.
  • the corresponding rolling stock 2 is thus with this axial position x of the work rolls 4 and the corresponding thereto, be in the context of step S1 be true state of the bending system 6 in the roll stand 1 ge rolls.
  • the present invention has been explained above in the manner that the work rolls 4 are the axially displaceable rolls.
  • the intermediate rollers 5 are axially displaceable.
  • the execution of the inventive method with respect to the intermediate rolls 5. in the case of a Sextogerüsts it is even possible that both the work rolls 4 and the intermediate rolls 5 are axially displaceable.
  • the execution of the method according to the invention can be done so well with respect to the work rolls 4 as well as with respect to the intermediate rolls 5.
  • the present invention has many advantages. In particular, it can be ensured in a simple and reliable manner that the wear of the work rolls 4 and / or the intermediate rolls 5 is smeared over a large portion of its axial extension He, so that nowhere can form a significant wear edge wear. If necessary, it is even possible to determine the axial position x sequentially one after the other in such a way that work is very deliberate on a desired roll wear.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

Une cage de laminoir (1) comporte au moins une paire de rouleaux (4, 5) entre lesquels se trouve le produit à laminer plat (2). Les rouleaux (4, 5) peuvent coulisser axialement dans des sens opposés. La cage de laminoir (1) comprend en outre un système (6) de flexion des rouleaux (4, 5). Un dispositif de commande (8) de la cage de laminoir (1) utilise la flexion et le coulissement axial des rouleaux (4, 5) comme mécanismes de réglage pour régler le contour de l'emprise. Avant de laminer un produit à laminer respectif (2), il détermine une position axiale respective (x) comme position axiale résultante (x) et la transmet à la cage de laminoir (1) comme position axiale (x) des rouleaux (4, 5) pour laminer le produit à laminer plat (2) suivant. Pour cela, le dispositif de commande (8) détermine pour une pluralité de positions axiales (x) des rouleaux (4, 5), dans quelle mesure on peut obtenir un contour d'emprise de consigne prédéterminé en commandant les mécanismes de réglage (6, 7) en tenant compte des conditions limites technologiques, et considère les positions axiales (x), dans lesquelles une déviation du contour d'emprise résultant par rapport au contour d'emprise de consigne est inférieure à une barrière prédéterminée, comme admissible. Il supprime ensuite les positions axiales verrouillées (x) de l'ensemble des positions axiales (x) considérées comme admissibles, dans la mesure où au moins une position axiale (x) considérée comme admissible subsiste après l'élimination des positions axiales verrouillées (x). Le dispositif de commande (8) détermine une des positions axiales restantes (x) comme position axiale résultante (x).
PCT/EP2019/053618 2018-03-09 2019-02-14 Évitement de bords d'usure lors du laminage d'un produit à laminer plat Ceased WO2019170381A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/970,078 US20210046529A1 (en) 2018-03-09 2019-02-14 Preventing worn edges when rolling flat rolled products
CN201980018241.XA CN111801173B (zh) 2018-03-09 2019-02-14 在轧制扁平轧件时避免磨损边缘

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18160879.5 2018-03-09
EP18160879.5A EP3536411B1 (fr) 2018-03-09 2018-03-09 Prévention des bords d'usure lors du laminage d'un produit plat à laminer

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Publication Number Publication Date
WO2019170381A1 true WO2019170381A1 (fr) 2019-09-12

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US (1) US20210046529A1 (fr)
EP (1) EP3536411B1 (fr)
CN (1) CN111801173B (fr)
WO (1) WO2019170381A1 (fr)

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EP3536411A1 (fr) 2019-09-11
EP3536411B1 (fr) 2020-11-18
CN111801173B (zh) 2022-06-14

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