EP3536411B1 - Prévention des bords d'usure lors du laminage d'un produit plat à laminer - Google Patents

Prévention des bords d'usure lors du laminage d'un produit plat à laminer Download PDF

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Publication number
EP3536411B1
EP3536411B1 EP18160879.5A EP18160879A EP3536411B1 EP 3536411 B1 EP3536411 B1 EP 3536411B1 EP 18160879 A EP18160879 A EP 18160879A EP 3536411 B1 EP3536411 B1 EP 3536411B1
Authority
EP
European Patent Office
Prior art keywords
control device
rollers
rolling
axial positions
axial position
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
EP18160879.5A
Other languages
German (de)
English (en)
Other versions
EP3536411A1 (fr
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 EP18160879.5A priority Critical patent/EP3536411B1/fr
Priority to CN201980018241.XA priority patent/CN111801173B/zh
Priority to PCT/EP2019/053618 priority patent/WO2019170381A1/fr
Priority to US16/970,078 priority patent/US20210046529A1/en
Publication of EP3536411A1 publication Critical patent/EP3536411A1/fr
Application granted granted Critical
Publication of EP3536411B1 publication Critical patent/EP3536411B1/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
    • 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
    • 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
    • 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 further based on a control program for a control device for controlling a roll stand, the control program comprising machine code that can be processed by the control device, the processing of the machine code by the control device causing the control device to carry out such a method.
  • the present invention is also based on a control device for a roll stand, the control device being designed such that it executes such a method during operation, in particular is programmed with such a control program.
  • the quality of the surface and the contour of the rolling stock transverse to the rolling direction are decisive parameters for flat rolling stock.
  • further processing steps that take place after rolling place certain demands on compliance, in particular with a desired contour of the flat rolling stock, i.e. the thickness profile as a function of the width of the flat rolled stock.
  • a major influencing factor for the contour of the flat rolling stock is the contour of the surfaces of the rolls of the rolling stand.
  • This contour is essentially composed of three components, namely on the one hand the roll grinding of a respective roll, on the other hand the thermal expansion of the respective roll and finally the wear and tear of the respective roll.
  • the wear on the edge of the strip edge of the rolling stock ie on the edges of the flat rolling stock
  • Measures must therefore often be taken to avoid that such steps are impressed in the flat rolling stock.
  • the production is adjusted.
  • a few rolled goods are first rolled, which gradually become wider.
  • the rolling of these rolling stock serves to warm up the roll.
  • only rolled goods are rolled whose width is gradually decreasing.
  • This procedure is known in specialist circles as what is known as the coffin lid operation. It has the advantage that the flat rolling stock can be rolled between the wear edges of its predecessors.
  • Another approach is to mechanically grind away the wear edges during the rolling process.
  • Such a method is for example from WO 2006/059 667 A1 known.
  • the object of the present invention is to create possibilities by means of which in particular the wear, viewed in the direction of the axis of rotation of the rolls, can be reliably distributed over a sufficiently large area and, at the same time, an accumulation of wear at individual points on the rolls can be reliably counteracted.
  • the roll stand is a duo stand, that is to say a roll stand in which there are no other rolls apart from the rolls mentioned.
  • the rolls according to the invention are the work rolls of the roll stand.
  • the roll stand has at least back-up rolls, the rolls each being arranged between the back-up rolls and the rolling stock.
  • the roll stand is usually a four-high stand or a six-high stand.
  • a four-high stand is a roll stand with a total of four rolls arranged one above the other. In this case, there are only backup rolls in addition to the rolls according to the invention.
  • the roll stand is a six-high stand, i.e.
  • a roll stand that, in addition to the back-up rolls and the work rolls, has two intermediate rolls that are each arranged between one of the back-up rolls and one of the work rolls.
  • the rolls according to the invention can also be the work rolls of the roll stand.
  • it can be the intermediate rolls.
  • both the work rolls and the intermediate rolls it is even possible for both the work rolls and the intermediate rolls to be axially displaceable, so that both the work rolls and the intermediate rolls are rolls within the meaning of the present invention.
  • rollers are provided with a cylindrical contour.
  • the present invention shows its full advantages, however, when the rollers are provided with a contour that is curved in the manner of a bottle neck.
  • the control device When determining the permissible axial positions, the control device takes into account, in particular, technological boundary conditions of the roll stand. Such boundary conditions are determined, for example, by the setting limits of the setting mechanisms and by the maximum possible adjustment speeds of the setting mechanisms. The adjustment limits of the adjustment mechanisms and the maximum possible adjustment speed can be due to technical reasons or restricted by an operator.
  • the roll gap contour corresponds to the thickness of the flat rolled stock after rolling, spatially resolved over the strip width.
  • the thickness of the flat rolled stock is determined over the strip width at at least 5 points, better at at least 10 points, for example at 20 points or more.
  • control device determines the axial position actually used from the remaining axial positions.
  • control device determines the resulting axial position on a stochastic basis. This procedure in particular avoids that - regardless of the reasons - certain axial positions are used disproportionately and thus results in wear in particular at the points of the further rollers at which the resulting edges of the rolled stock are located when the flat rolled stock is rolled.
  • control device assigns an evaluation to at least the remaining axial positions on the basis of an evaluation criterion and that the control device determines the resulting axial position on the basis of the evaluation.
  • the optimal axial position for rolling the respective flat rolled stock can be used, in accordance with the assessment.
  • the control device can determine the evaluation in particular on the basis of technological criteria.
  • the locking of axial positions can also be done as required.
  • control device it is possible for the control device to receive a locking command from an operator and for the control device to then receive axial positions specified in the locking command locks.
  • the operator is able, for example, on the basis of higher-level technological knowledge that is not available in the control device, to block certain disadvantageous axial positions.
  • wear edges occur in the rolls.
  • the position of these wear edges is usually known to the control device because the control device usually knows which flat rolling stock (with what width) has already been rolled at which axial position of the further rolls, i.e. where the wear edges have arisen.
  • the control device determines a resulting edge of one of the rollers taking into account a grinding, thermal crowning and / or wear of the rollers and to block those axial positions in which the resulting edge of one of the rollers is on a rolling stock edge of the flat Rolled stock would be positioned.
  • the control device preferably also blocks those axial positions whose spacing is in a predetermined range around that axial position in which the flat rolled stock that was rolled immediately before is rolled. This ensures that when several flat rolled goods are rolled, the further rolls are positioned in a relatively large displacement area, so that the wear on the further rolls is distributed over a large area of the width of the further rolls. This increases the service life of the other rollers.
  • the predetermined area is symmetrical with respect to the axial position in which the flat rolled material that was rolled immediately before is rolled. In this case, the axial position at which the flat material rolled immediately before is rolled is in the center of the predetermined range. However, the area can also be arranged asymmetrically.
  • control device it is possible for the control device to block those axial positions which lie in the predetermined range only for the flat rolling stock to be rolled next.
  • control device can block the corresponding axial positions for several subsequently rolled products.
  • the control device locks the corresponding axial positions for a number of flat rolled products. Afterwards, however, when the corresponding number of further flat rolled products has been rolled, the control device cancels the lock again. This applies regardless of whether the number of flat rolled products for which the block has been made is 1 or greater than 1.
  • the locking of axial positions actually classified as permissible is, as already mentioned, only carried out if at least one axial position classified as permissible remains after the locking.
  • the control device blocks at least the current axial position in which the flat rolled material that was rolled immediately before is rolled.
  • other criteria are also possible, such that, for example, the blocking of axial positions by the operator has priority.
  • the prioritization can be fixed or specified by the operator.
  • control program with the features of claim 11.
  • processing of the control program has the effect that the control device executes a method according to the invention.
  • control device having the features of claim 12.
  • the control device is designed such that it executes a method according to the invention.
  • the control device can be programmed with a control program according to the invention.
  • the object is also achieved by a roll stand for rolling flat rolling stock with the features of claim 13.
  • the rolling stock is controlled by a control device according to the invention.
  • a flat rolling stock 2 is to be rolled in a roll stand 1.
  • the roll stand 1 has at least one pair of rolls 4, 5, between which the flat rolling stock 2 is located.
  • the rolls 4, 5 are arranged between the backup rolls 3 and the flat rolling stock 2.
  • at least work rolls 4 are present, ie rolls which are in direct contact with the flat rolling stock 2 during operation. If, as in the FIGS.
  • the roll stand 1 is a Quarto scaffolding. If, as in the FIGS 3 and 4 shown, in addition to the backup rolls 3 and the work rolls 4 and intermediate rolls 5 are present, the roll stand 1 is a six-high stand.
  • the work rolls 4 axially displaceable in opposite directions.
  • the corresponding displacement state is referred to below as the axial position x.
  • "Axial position" is not used in the context of the present invention in the sense of a specific point along a roll barrel of a roll 3, 4, 5 or across the width of the flat rolling stock 2, but in the sense of a specific shift position of one work roll 4 relative to the other work roll 4th
  • the work rolls 4 can be provided with a specific contour as required. For example, they can be provided with a cylindrical contour. According to the representation in FIG 5 are the work rolls 4 over their barrel length provided with a bottle neck-like curved contour. Such bottle neck-like contours are known in specialist circles, for example, as CVC cuts and SmartCrown cuts.
  • the contours of the work rolls 4 complement each other in the load-free state of the roll stand 1, as a rule, at one (1) axial position x.
  • the curved contours can have chamfers or gradual transitions at their axial ends. Regardless of the specific design of the contours of the work rolls 4, however, the work rolls 4 form a parabolic roll gap, the extent of the parabolism in the case of the bottle neck-like contours depending on the extent of the axial displacement of the work rolls 4.
  • the roll stand 1 has, as shown in FIGS. 1 to 4 furthermore a bending system 6.
  • the work rolls 4 can be bent in a defined manner in a manner known per se.
  • a parabolic shape can also be impressed in particular on the roll gap by the bending system 6. Therefore, within certain limits, 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 hand can mutually reinforce or compensate each other, depending on the type and extent of the respective control of a sliding system 7 with which the work rolls 4 can be moved, and the bending system 6.
  • both systems 6, 7, in particular, the roll gap contour can be adjusted.
  • the roll stand 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 control device 8 is designed in such a way that it executes a method during operation that is explained in more detail below.
  • the control device 8 can be programmed with a control program 9 for this purpose.
  • the control program in this case comprises machine code 10 which can be processed by the control device 8.
  • the processing of the machine code 10 by the control device 8 causes the control device 8 to carry out the corresponding method, which in particular includes the control of the bending system 6 and the sliding system 7.
  • the control device 8 determines for a large number of axial positions x of the work rolls 4 (defined by a respective control of the sliding system 7), by means of which control of the bending system 6 the roll gap contour is optimally approximated to a predetermined desired roll gap contour. At the same time, it also determines a quality measure A for the conformity of the resulting roll gap contour with the target roll gap contour.
  • the relevant facts are in FIG 7 represented by a corresponding 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 desired roll gap contour is included in the cost function, in particular at a number of support points over the width of the flat rolling stock 2.
  • the number of support points across the width of the flat rolling stock 2, at which the control device 8 determines the respective local deviation of the roll gap contour from the target roll gap contour is usually at least 5 places, better at least 10 places. In many cases, the comparison is even carried out on a considerably larger number, for example with 20, 50 or even more support points.
  • rolling stock 2A an extent and / or a speed with which the axial position x, based on a current axial positioning - that is, the positioning of the corresponding positioning system 6, 7 at the time of rolling the flat rolled stock that was rolled immediately before 2 (hereinafter referred to as rolling stock 2A) - must be adjusted.
  • the control device 8 can determine 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, the quality measure A is usually only determined for support points of the axial position x. The control device 8 interpolates the quality measure A between the support points.
  • the control device 8 executes the step S1 before the rolling of the respective flat rolling stock 2 (hereinafter referred to as rolling stock 2B). As a rule, the control device 8 continues to carry out step S1 after the rolling stock 2A that was rolled immediately before has been rolled.
  • the control device 8 observes technological boundary conditions in the course of executing step S1.
  • boundary conditions can in particular consist of the extent to which the bending system 6 and / or the sliding system 7 can be controlled at all, that is to say the maximum possible sliding stroke and the maximum possible bending stroke.
  • the boundary conditions can 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 the achievable roll gap contour is restricted, taking into account a maximum adjustment speed for the bending system 6.
  • 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 permissible axial positions x.
  • control device 10 then removes blocked axial positions x from the set of permissible axial positions x.
  • control device 8 can receive a blocking command C from an operator 11 as part of step S3 (see FIG FIG 1 and 3 ). In this case, the control device 8 blocks the axial positions x specified in the blocking command C.
  • the control device 8 can, based on the specification of the operator 11, the in FIG 7 Block axial position x supplemented with the letter A.
  • control device 8 according to the representation in FIG 8 (At least) one resulting edge 12 of the work rolls 4 is determined and checks at which axial position x one of the work rolls 4 the resulting edge 12 would be positioned on a rolling stock edge 13 of the rolling stock 2B to be rolled.
  • the control device 8 locks as shown in FIG FIG 7 for example the in FIG 7 Axial position x supplemented with the letter B. It is possible that the control device 8 only takes into account the wear of the work rolls 4 when determining the resulting edge 12.
  • the control device 8 preferably determines the resulting edge 12, however, taking into account the cut, the thermal crown and / or the wear of the work rolls 4.
  • the control device 8 blocks those axial positions x which are located in a predetermined area around that axial position x at which the flat rolling stock 2A rolled immediately before - in this case the flat rolling stock 2A - is rolled.
  • the control device 8 can block that 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 stock 2 is rolled.
  • the lock as a function of the predetermined range - it is possible that the lock only applies to the flat rolling stock 2 to be rolled next - that is, the flat rolling stock 2B.
  • the control device 8 then automatically releases the lock again.
  • the duration of the block can be a function of the sign and / or amount of the distance a, in particular decrease with increasing distance a.
  • the extent to which the control device 8 blocks axial positions x in step S3 can be determined as required. Regardless of the extent of the blocking, the blocking is only carried out to the extent that after removing the blocked axial positions x from the set of axial positions x classified as permissible, at least one axial position x remains, i.e. at least one axial position x that is both permissible and not Is blocked. In other words, if only a single axial position x is permissible, this axial position x must not be blocked in step S3, since otherwise no more permissible axial position x would be available for the rolling of the flat rolling stock 2.
  • step S3 If, on the other hand, the number of permissible axial positions x is greater than 1, at least one (principally permissible) axial position x is blocked in step S3.
  • the blocking of axial positions x is only carried out to the extent that at least one axial position x still remains permissible.
  • the axial position x at which the flat rolling stock 2 rolled immediately beforehand - that is to say here the flat rolling stock 2A - is rolled is still primarily blocked. In principle, however, other prioritizations are also possible.
  • the locking of axial positions x is not simply optional, but compulsory if there is any possibility of locking axial positions x.
  • the control device 8 therefore always checks in the context of step S3 whether the number of permissible axial positions x is greater than 1. If this is the case, at least one axial position x is blocked. If, on the other hand, this is not the case - but only then - the blocking of the only permissible axial position x in this case does not occur.
  • a step S4 the control device 8 determines the respective axial position x at which the flat rolling stock 2 that is now to be rolled - that is to say the rolling stock 2B according to the example - is to be rolled.
  • This axial position x is referred to below as the resulting axial position x.
  • the resulting axial position x is determined by selecting one of the permissible and at the same time unlocked axial positions x. Step S4 is also carried out before the rolling stock 2 is rolled.
  • control device 8 determines the resulting axial position x can for example take place on a stochastic basis.
  • the control device 8 can determine an evaluation for the axial positions x on the basis of an evaluation criterion and assign it to the axial positions x.
  • the control device 8 determines the resulting axial position x on the basis of the evaluation. It is sufficient to determine and assign the evaluation only for the remaining axial positions x, that is, the permissible and at the same time not blocked axial positions x. This is because the resulting axial position x is only determined 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 technological criteria, in particular the quality measure A.
  • step S5 the control device 8 finally specifies the resulting axial position x for the rolling stand 1 as the axial position x for rolling the flat rolling stock 2 - according to the example of the rolling stock 2B.
  • the corresponding rolling stock 2 is thus rolled in the rolling stand 1 with this axial position x of the work rolls 4 and the corresponding state of the bending system 6 determined in the context of step S1.
  • the present invention has been explained above in the manner that the work rolls 4 are the axially displaceable rolls.
  • the intermediate rolls 5 it is possible for the intermediate rolls 5 to be axially displaceable.
  • the method according to the invention is carried out with respect to the intermediate rolls 5.
  • the method according to the invention can be carried out both with respect to the work rolls 4 and with respect to the intermediate rolls 5.
  • the present invention has many advantages. In particular, it can be ensured in a simple and reliable way that the wear of the work rolls 4 and / or the intermediate rolls 5 is smeared over a large area of their axial extent, so that a significant wear edge cannot develop anywhere. If necessary, it is even possible to determine the axial position x sequentially one after the other in such a way that work is carried out in a very targeted manner towards a desired roller wear.
  • the various options for locking axial positions x and the various options for determining the resulting axial position x from the remaining axial positions x result in a high degree of flexibility, so that the procedure according to the invention can be applied to the large number of roll stands without further modifications.

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

Claims (13)

  1. Procédé de laminage d'un produit à laminer plat (2) dans une cage de laminoir (1), la cage de laminoir (1) comprenant au moins une paire de cylindres (4, 5), le produit à laminer plat (2) se trouvant entre les deux cylindres (4, 5), les cylindres (4, 5) pouvant être déplacés en sens contraire axialement, la cage de laminoir (1) comprenant un système de cintrage (6) pour les cylindres (4, 5),
    - un dispositif de commande (8) de la cage de laminoir (1) utilisant le cintrage et le déplacement axial des cylindres (4, 5) en tant que mécanismes de réglage pour la régulation du profil d'emprise,
    - le dispositif de commande (8) déterminant une position axiale respective (x) en tant que position axiale résultante (x) avant le laminage d'un produit à laminer (2) respectif et la fournissant comme consigne à la cage de laminoir (1) en tant que position axiale (x) des cylindres (4, 5) pour le laminage du produit à laminer plat (2) suivant,
    caractérisé
    - en ce que le dispositif de commande (8) détermine pour une pluralité de positions axiales (x) des cylindres (4, 5), avant le laminage du produit à laminer (2) respectif, la mesure dans laquelle il est possible de s'approcher d'un profil d'emprise de consigne prédéfini, dans le respect de conditions aux limites technologiques, en actionnant les mécanismes de réglage (6, 7),
    - en ce que le dispositif de commande (8) classe comme admissibles les positions axiales (x) pour lesquelles un écart du profil d'emprise obtenu par rapport au profil d'emprise de consigne se situe en dessous d'une limite prédéfinie,
    - en ce que le dispositif de commande (8) élimine de l'ensemble des positions axiales (x) classées comme admissibles des positions axiales (x) interdites à condition qu'il subsiste encore au moins une position axiale (x) classée comme permise même après l'élimination des positions axiales (x) interdites, et
    - en ce que le dispositif de commande (8) détermine une des positions axiales (x) restantes en tant que position axiale (x) résultante.
  2. Procédé selon la revendication 1, caractérisé
    en ce que la cage de laminoir comprend, en plus des cylindres (4, 5), des cylindres de soutien (3), les cylindres (4, 5) étant situés à chaque fois entre les cylindres de soutien (3) et le produit à laminer (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé
    en ce que les cylindres (4, 5) sont dotés d'un profil courbe similaire à un goulot de bouteille.
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que le dispositif de commande (8) détermine la position axiale (x) résultante sur une base stochastique.
  5. Procédé selon la revendication 1, 2 ou 3, caractérisé
    en ce que le dispositif de commande (8) attribue une estimation au moins aux positions axiales (x) restantes à l'aide d'un critère d'estimation et en ce que le dispositif de commande (8) détermine la position axiale (x) résultante à l'aide de l'estimation.
  6. Procédé selon la revendication 5, caractérisé
    en ce que le dispositif de commande (8) détermine l'estimation à l'aide de critères technologiques.
  7. Procédé selon l'une des revendications précédentes, caractérisé
    en ce que le dispositif de commande (8) reçoit d'un opérateur (11) une instruction de blocage (C) et en ce que le dispositif de commande (8) bloque des positions axiales (x) spécifiées dans l'instruction de blocage (C).
  8. Procédé selon l'une des revendications précédentes, caractérisé
    en ce que le dispositif de commande (8) détermine un bord résultant (12) de l'un des cylindres (4, 5) en tenant compte d'un meulage, d'un bombement thermique et/ou d'une usure des cylindres (4, 5) et en ce que le dispositif de commande (8) bloque les positions axiales (x) pour lesquelles le bord résultant (12) de l'un des cylindres (4, 5) serait positionné sur un bord (13) du produit à laminer plat (2).
  9. Procédé selon l'une des revendications précédentes, caractérisé
    en ce que le dispositif de commande (8) bloque les positions axiales (x) qui se trouvent dans une zone prédéterminée entourant la position axiale (x) dans laquelle le produit à laminer plat (2A) laminé juste avant est laminé.
  10. Procédé selon la revendication 9, caractérisé
    en ce que le dispositif de commande (8) bloque pour un nombre prédéterminé de produits à laminer plats (2) les positions axiales (x) dont la distance (a) est inférieure à la distance minimale (amin) par rapport à la position axiale (x) dans laquelle le produit à laminer plat (2A) laminé juste avant est laminé et annule ensuite de nouveau le blocage.
  11. Programme de commande pour un dispositif de commande (8) destiné à la commande d'une cage de laminoir (1), le programme de commande comprenant un code machine (10) qui peut être pris en charge par le dispositif de commande (8), la prise en charge du code machine (10) par le dispositif de commande (8) entraînant l'exécution par le dispositif de commande (8) d'un procédé selon l'une des revendications précédentes.
  12. Dispositif de commande pour une cage de laminoir (1), le dispositif de commande étant conçu de façon à exécuter, en service, un procédé selon l'une des revendications 1 à 8, notamment étant programmé avec un programme de commande (9) selon la revendication 11.
  13. Cage de laminoir pour le laminage d'un produit à laminer plat (2),
    - la cage de laminoir comprenant une paire de cylindres (4, 5),
    - le produit à laminer plat (2) se trouvant entre les deux cylindres (4, 5),
    - les cylindres (4, 5) pouvant être déplacés en sens contraire axialement,
    - la cage de laminoir comprenant un système de cintrage (6) pour les cylindres (4, 5),
    - la cage de laminoir étant commandée par un dispositif de commande (8) selon la revendication 12.
EP18160879.5A 2018-03-09 2018-03-09 Prévention des bords d'usure lors du laminage d'un produit plat à laminer Active EP3536411B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18160879.5A EP3536411B1 (fr) 2018-03-09 2018-03-09 Prévention des bords d'usure lors du laminage d'un produit plat à laminer
CN201980018241.XA CN111801173B (zh) 2018-03-09 2019-02-14 在轧制扁平轧件时避免磨损边缘
PCT/EP2019/053618 WO2019170381A1 (fr) 2018-03-09 2019-02-14 Évitement de bords d'usure lors du laminage d'un produit à laminer plat
US16/970,078 US20210046529A1 (en) 2018-03-09 2019-02-14 Preventing worn edges when rolling flat rolled products

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
EP3536411A1 EP3536411A1 (fr) 2019-09-11
EP3536411B1 true EP3536411B1 (fr) 2020-11-18

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EP18160879.5A Active EP3536411B1 (fr) 2018-03-09 2018-03-09 Prévention des bords d'usure lors du laminage d'un produit plat à laminer

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4353375A1 (fr) * 2022-10-11 2024-04-17 Primetals Technologies Germany GmbH Procédé de détermination de variables de réglage d'une cage de laminoir, programme de commande correspondant, dispositif de commande muni d'un tel programme de commande et cage de laminoir muni d'un tel dispositif de commande

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE3620197A1 (de) * 1986-06-16 1987-12-17 Schloemann Siemag Ag Walzwerk zur herstellung eines walzgutes, insbesondere eines walzbandes
JPH0620562B2 (ja) * 1988-12-28 1994-03-23 住友金属工業株式会社 熱間圧延時の板クラウン制御方法
JPH0615322A (ja) * 1992-07-03 1994-01-25 Sumitomo Metal Ind Ltd 熱間圧延時の板クラウン制御方法
WO1995019591A1 (fr) * 1994-01-13 1995-07-20 Siemens Aktiengesellschaft Procede et dispositif de direction d'un processus
JP3348503B2 (ja) * 1994-02-25 2002-11-20 石川島播磨重工業株式会社 圧延機用のワークロールとロールシフト式圧延機
JP2002066608A (ja) * 2000-08-30 2002-03-05 Hitachi Ltd 冷間圧延機及び圧延方法
AT410904B (de) * 2001-03-14 2003-08-25 Voest Alpine Ind Anlagen Verfahren und vorrichtung zur berechnung der walzspaltkontur
CN2698479Y (zh) * 2003-11-12 2005-05-11 一重集团大连设计研究院 工作辊双向移动式四辊冷轧机
DE102004031354A1 (de) * 2004-06-28 2006-01-19 Sms Demag Ag Verfahren zum Walzen von Bändern in einem Walzgerüst
JP4447440B2 (ja) 2004-12-02 2010-04-07 新日本製鐵株式会社 ワークロールのオンライン研削方法
CN104096712B (zh) * 2013-04-12 2016-01-13 张家港浦项不锈钢有限公司 炉卷轧机上高速钢轧辊的使用方法
CN103639201B (zh) * 2013-12-04 2015-06-03 武汉科技大学 一种超薄钛带的轧制方法
CN107030112A (zh) * 2017-03-07 2017-08-11 重庆市科学技术研究院 一种镁合金超薄板的轧制方法

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Also Published As

Publication number Publication date
EP3536411A1 (fr) 2019-09-11
US20210046529A1 (en) 2021-02-18
CN111801173A (zh) 2020-10-20
WO2019170381A1 (fr) 2019-09-12
CN111801173B (zh) 2022-06-14

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