EP0972581B1 - Procédé de laminage pour produits en forme de barres, notamment d'acier en barres ou de fils - Google Patents

Procédé de laminage pour produits en forme de barres, notamment d'acier en barres ou de fils Download PDF

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Publication number
EP0972581B1
EP0972581B1 EP99111050A EP99111050A EP0972581B1 EP 0972581 B1 EP0972581 B1 EP 0972581B1 EP 99111050 A EP99111050 A EP 99111050A EP 99111050 A EP99111050 A EP 99111050A EP 0972581 B1 EP0972581 B1 EP 0972581B1
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EP
European Patent Office
Prior art keywords
rolling
roll
actual
stand
nominal
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.)
Expired - Lifetime
Application number
EP99111050A
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German (de)
English (en)
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EP0972581A2 (fr
EP0972581A3 (fr
Inventor
Otmar Dr. Palzer
Lutz Dr. Broll
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SMS Siemag AG
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SMS Demag AG
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Publication date
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Publication of EP0972581A3 publication Critical patent/EP0972581A3/fr
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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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/64—Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands
    • 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
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • 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
    • B21B37/48—Tension control; Compression control

Definitions

  • the present invention relates to a rolling process for rod-shaped rolling stock, in particular bar steel or wire, in one Roll stand with two relative to each other in a Anstellcardi adjustable work rolls, which together have a rolled caliber with a Form actual nip, so that the rolling stock from the rolling mill with an actual height and an actual width at a rolling speed runs out, wherein the rolling stock is rolled with an actual rolling force (see, for example, JP-A-590 544 12).
  • Such rolling processes are known. You work, for example, on the Basis of a so-called monitor control. These are deviations detected in the height and the width of the rod-shaped rolling stock and on the basis of an electromechanical or hydromechanical employment corrected. Such systems have the disadvantage that both the Monitor control itself as well as employment very slow. In addition, there is the time delay due to the measurement behind the last controlled scaffolding. The result is a reaction time of about 3 seconds, so only interference with a low Frequency are adjustable. Short-term disturbances, e.g. by so-called Skidmarks are not predictable, which may be too Tolerance violations leads. The same problem arises in case of faults that start at the rolling stock or at the rolling stock end Temperature and thickness variations are caused.
  • the present invention has set itself the task of a rolling process for rod-shaped rolling to create, which significantly works faster and with the so also short-term disturbances are adjustable.
  • Such methods have been for rolling tapes for years known. They are highly developed. They care independently of the Rolling force for an actual rolling gap corresponding to the desired rolling gap.
  • the methods have been used for rolling rod-shaped rolling stock considered not applicable. The reason for this is that when rolling From the band, the width of the rolling stock is constant from the outset. at rod-shaped rolling, on the other hand, automatically becomes too by rolling changed the width of the rolling stock.
  • a simple transfer of For the rolling of tape known method would therefore be inadmissible Width tolerances result.
  • the method is used to calculate the difference between a Parent control method determined target roll gap and a Actual roll gap to minimize as quickly as possible. This will be the Application of the known thickness rules for bar steel and Wire routes enabled.
  • the rolling stock the rolling mill is subjected to a train control.
  • the train regulation can be designed in particular as a minimum traction control.
  • the train control can z. B. be realized that the Walzgut before the rolling stand is subjected to a loop control.
  • the difference between the actual rolling gap and the target roll gap by the roll engagement correction value is compensated to a part. Because this way Cross-sectional fluctuations of the incoming rolling uniform on the actual height and the actual width of the expiring rolling stock distributed.
  • the part is rolling force and / or frequency dependent.
  • Rod-shaped rolling stock is rolled in many-stand rolling mills.
  • the invention therefore more particularly relates to a rolling process, in which a rod-shaped rolling stock, in particular bar or wire, first passes through a front and then a rear rolling stand, wherein both the front and the rear roll stand with a the rolling process described above are operated and wherein the Anstellraumen the work rolls of the rolling stands vertically stand on each other.
  • the actual height and the actual width should be simultaneous be detected.
  • the rolling process works even more precisely when the nominal roll gap fed to the rolling stands by a waiting time, where the waiting time is determined by the quotient between an the rolling stock length located at the rear and at the front roll stand and the rolling speed of the front rolling mill is determined.
  • the control dynamics of the above rolling process is characterized by between the front rolling stand and the detection point for the actual height and the actual width of the rolling stock located Walzgutin limited.
  • the control dynamics can therefore be improved by that for the rear roll stand determines an additional target roll gap such is that the ratio of relative errors in height and the Width remains as constant as possible, with the relative error in the Height by the difference between the actual height and the target height, divided by the desired height, and the relative error in the width by the Difference between actual width and nominal width divided by the nominal width, given is.
  • the control loop for determining the nominal roll gap is not closed.
  • the actual height, the target height, the actual width and the target width Preliminary positions for the rolling stands.
  • a subsequent rolling stock can then be rolled until the tip of the subsequent rolling stock the detection point goes through and so closes the loop.
  • the rolling stands can still with the pre-employment after the closing of the control loop be applied as pre-tax values.
  • the dynamics and also the control accuracy of the rolling stands is in Full scope only given if the roller adjustments of Rolling scaffolding within a given range of employment move.
  • the Rolling stands for at least one upstream of the front rolling stand Roll stand determined a target roll gap. This can be guaranteed be that the roll settings of the two rolling stands move within the most favorable employment range.
  • bar or wire usually consists of a variety of rolling stands. In Fig. 1, four of these rolling stands are shown and provided with the reference numerals 1-4.
  • a rod-shaped rolling stock 5, according to embodiment material 5 for wire, steel passes in a transport direction z successively first the rolling stand 4, then the rolling stand 3, then the rolling stand 2 and finally the roll stand 1. Behind the rolling stand 1 is at a detection point 6 a Thickness meter 7 arranged. Between the rolling stand 1 and the detection point 6 and the rolling stand 2 are rolling stock l 0 , l 1 of the rolling stock. 5
  • the rolling stands 1 and 3 are vertical scaffolding. Theirs are theirs two work rolls 8 arranged vertically. The work rolls 8 are thus adjustable relative to each other in a Anstellcardi x.
  • the Setting direction x is horizontal.
  • the rolling stands 2 and 4 however, are horizontal scaffolding. With them are their two work rolls 8 in a Anstellcardi y adjustable, which vertically runs.
  • the Anstellcardien x, y form together with the transport direction z of the rolling stock 5 a right-handed, rectangular coordinate system (x, y, z).
  • the 5 runs rolling in the roll stand 4 at a rolling speed v 4, wherein in the y direction has a before rolling in the roll stand 4 has a dimension x 4 in x-direction and y. 4
  • the rolling stock 5 is rolled in the rolling stand 4, wherein the work rolls 8 of the rolling stand 4 rotate at an operating speed n 4 . After rolling, the rolling stock 5 runs out of the roll stand 4 at a rolling speed v 3 . At this time, the rolling stock 5 dimensions x 3 and y 3 in the x-direction or y-direction. With these values, it enters the mill stand 3.
  • the rolling stock between the rolling stands 3 and 2 has a rolling speed v 2 and dimensions x 2 , y 2 in the x-direction or y-direction.
  • the rolling stock 5 between the rolling stands 2 and 1 has a rolling speed v 1 and dimensions x 1 , y 1 . From the rolling stand 1, the rolling stock then runs at a rolling speed v 0 and dimensions x 0 , y 0 .
  • the rolling stands 2 and 4 are horizontal scaffolding.
  • the dimension y 1 , y 3 of the expiring rolling stock 5 in the y-direction thus corresponds to the actual height.
  • the dimension x 1 , x 3 of the expiring rolling stock 5 corresponds to the actual width.
  • the dimension x 0 , x 2 corresponds to the actual height behind the respective rolling stand 1 or 3, the dimension y 0 , y 2 of the actual width.
  • Each two work rolls 8 of the rolling stands 1-4 each form a rolling caliber with an actual rolling gap s 1 to s 4th
  • the actual roll gaps s 1 to s 4 can be adjusted to a corresponding desired roll gap s 1 * -s 4 * by a corresponding adjustment a 1 to a 4 of the respective rolling stand 1-4.
  • the work rolls 8 of the rolling stands 1 and 2 are about hydraulic cylinder units 12 relative to each other employable.
  • the rolling stands 3 and 4 can also be adjusted via hydraulic cylinder units. Alternatively, it is also possible in the rolling stands 3 and 4 to employ these via an electric or hydraulic motor with downstream gear.
  • the rolling mills 1-4 are therefore initially operated in controlled operation with predetermined rolling gaps s 1 * -s 4 *.
  • the values h 0, b 0 are reported to a rolling plan computer 9, which determines therefrom on the basis of a rolling schedule the set rolling nip s 1 *, s 2 * for the rolling stands 1 and 2.
  • the calculation of the setpoint values s 1 *, s 2 * takes into account the coupling of length, height and width changes in the roll stands 1 and 2.
  • the setpoints s 1 *, s 2 * are determined such that the difference between the actual Height h 0 and a desired height h 0 * and the difference between the actual width b 0 and a desired width b 0 * go to zero.
  • the desired roll gaps detected s 1 * and s * applied to the same point of the rolling material 5 have the nominal roll gaps s 1 *, s * are the rolling stands 1, 2 thus fed offset in time by a wait time 2, the same the term is t.
  • the target rolling gap s 2 * is therefore fed to the rolling stand 2 by the transit time t than the desired rolling gap s 1 * of the rolling stand 1.
  • the rolling stock 5 is rolled in the rolling stands 1-4 with actual rolling forces F 1 to F 4 . Due to the actual rolling forces F 1 to F 4, the actual rolling gaps s 1 - s 4 of the rolling stands 1-4 spring up.
  • the actual roll gaps s 1 to s 4 thus obtained as the sum of an adjustment a 4 to a 1 of the respective roll stand 1-4 and the respective Gerüstauffed mecanic C 1 F 1 to F 4 C. 4 C 1 to C 4 are the spring constants of the rolling stands 1-4.
  • the actual rolling force F 1 is detected according to FIG. 2 and supplied to a frequency filter 10.
  • the frequency filter 10 filters the rolling force F 1 and passes the filtered value further to a frame controller. 11
  • the frame controller 11 determines in accordance with FIG. 3 on the basis of the filtered actual roll force F 1 a rolling force caused Walzspaltauffed réelle .DELTA.S 1.
  • the tension control is preferably designed as a minimum tension control. It can be realized for example by means of a loop control. By means of the tension control is achieved that the rolling stock 5 enters the rolling mill 1 with a substantially constant train.
  • the maximum permissible tension fluctuations are 5 MPa. Even better is when the pull fluctuations are limited to 2 MPa.
  • the actual roll gap s 1 can always be maintained at its desired roll gap s 1 *.
  • the rolling force F 1 but is also dependent on the temperature and the cross section of the incoming rolling stock. If the frame controller 11 would always control the actual roll gap s 1 to its desired roll gap s 1 *, the actual height h 0 would always be equal to the setpoint height h 0 *.
  • the actual width b 0 would vary greatly. It is therefore generally more favorable if the difference between the actual rolling gap s 1 and the target rolling gap s 1 * is only partially compensated by the frame regulator 11 by means of the roll adjustment correction value ⁇ a 1 .
  • the part is usually between 20 and 90 percent of the full correction. In particular, it can be roller force and frequency dependent. With such a correction is only partial the roll error uniform h to both dimensions 0, b 0 distributed.
  • the rolling speed v 4 to v 0 increases steadily from the roll stand 4 to the roll stand 1.
  • the diameters of the work rolls 8 either remain the same or decrease from the rolling stand 4 to the rolling stand 1.
  • the work rolls 8 of the rolling stand 1 rotate fastest. Due to any eccentricities of the work rolls 8 caused periodic errors can therefore have a maximum frequency corresponding to the rotational speed n 1 of the roll stand 1.
  • the actual rolling force F 1 of the rolling stand 1 is detected at least twice per revolution of the work rolls 8 of the rolling stand 1.
  • the roller adjustment correction value ⁇ a 1 is frequency-filtered according to the known frequencies corresponding to the speeds n 1 to n 4 in the frame controller 11. Only the frequency-filtered roll adjustment correction value ⁇ a 1 is then fed to the rolling stand 1.
  • the stabilization of eccentricity is particularly effective when the roll adjustment correction value .DELTA.a 1 is fed to the roll stand 1 as the sum of frequency components.
  • the frequency component corresponding to the operating speed n 1 of the roll stand 1 is fed to the roll stand 1 after a filter time T '.
  • This frequency component may optionally be weighted with its own gain factor between 0.15 and 10.0 relative to the other frequency components.
  • the filter time T ' is selected such that the work rolls 8 of the roll stand 1 during the sum of skeleton rule time T and filter time T' between 0.4 and 0.55 revolutions, ie in about half a turn, possibly plus any number of complete revolutions , return.
  • the roll stand 2 is controlled in the same manner as shown in FIG like the roll stand 1.
  • the maximum control dynamics of the monitor control would be given by l 0 : v 0 .
  • the control dynamics would be higher. This can be exploited by determining an additional nominal roll gap ⁇ s * for the roll stand 1. This value is determined such that the ratio of the relative errors ⁇ h, ⁇ b in the height and the width of the rolling stock 5 remains as constant as possible, in any case within a preselectable barrier.
  • the relative error ⁇ h in the height is given by the difference between the actual height h 0 and the target height h 0 * divided by the desired height h 0 *.
  • the relative error ⁇ b in the width is given in an analogous way by the difference between the actual width b 0 and the desired width b 0 * divided by the desired width b 0 *.
  • the influence of the additional desired roll gap .DELTA.S 1 * to the actual height h 0, and the actual width of b 0 must, s are 2 * taken into account for the rolling stands 1 and 2 in the determination of the desired roll gaps s 1 *, of course.
  • the method described above for adjusting the desired roll gaps s 1 *, s 2 * can of course only be carried out when the beginning of the rolling material 5 has already reached the detection point 6, and happens, the monitor control is thus closed. Before this time, the control loop is open.
  • the rolling stands 1, 2 must therefore be operated during this period in controlled operation. Measurements of the actual height h 0 , the actual width b 0 and the corresponding desired values h 0 *, b 0 *, however, can be used to determine the set roll gap s 1 *, s 2 * based on a rolling model in the rolling plan computer 9 to which the desired actual values h 0 , b 0 are to be expected. With these values for the nominal roll gaps s 1 *, s 2 *, the rolling stands 1, 2 are then operated as long as the control loop of the monitor control is open.
  • the rolling stands 1, 2 are optimally operable only within a predetermined range of employment. In order to always ensure that the actual jobs a 1 , a 2 of the rolling stands 1, 2 move within this range, the actual jobs a 1 , a 2 of the rolling stands 1, 2 are transmitted to the rolling plan computer 9. As soon as the actual positions a 1 , a 2 reach the limits of their permissible ranges, the nominal roll gaps s 3 *, s 4 * of the rolling stands 3, 4 are changed such that the actual positions a 1, a 2 of the rolling stands 1, 2 are again shifted more in the middle of their allowable dynamic range. Thus, from the roll positions a 1 , a 2 of the roll stands 1, 2 for the upstream roll stands 3, 4 new set roll gaps s 3 *, s 4 * are determined.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Ropes Or Cables (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (15)

  1. Procédé de laminage pour produit à laminer en forme de barre (5), notamment acier en barre ou fil de fer (5), dans une cage de laminoir (1) comportant deux rouleaux opérationnels (8) positionnables l'un par rapport à l'autre grâce à une unité à vérins hydrauliques (12) dans un sens de positionnement (x) qui constituent ensemble un calibre de laminage avec un entrefer réel (s1) de manière à ce que le produit à laminer (5) sorte de la cage de laminoir (1) avec une hauteur réelle (h0) et une largeur réelle (b0) à une vitesse de laminage (v0),
    le produit à laminer (5) étant laminé avec une force de laminage réelle (F1),
    la force de laminage réelle (F1) étant détectée,
    une déformation élastique de l'entrefer fonction de la force de laminage ( s1) étant définie sur la base de la force de laminage réelle (F1),
    une valeur corrective de positionnement des rouleaux (a1) étant définie sur la base de la déformation élastique de l'entrefer fonction de la force de laminage (s1) et d'un entrefer théorique (s1*) de manière à ce que l'entrefer réel (s1) s'approche de l'entrefer théorique (s1*) et
    un positionnement des rouleaux (a1) étant modifié durant un temps de réglage de la cage (T) de la valeur corrective de positionnement des rouleaux ( a1).
  2. Procédé de laminage selon la revendication 1,
    caractérisé en ce que
    le produit à laminer (5) rentre dans la cage de laminoir (1) avec une traction sensiblement constante.
  3. Procédé de laminage selon la revendication 2,
    caractérisé en ce que
    le produit à laminer (5) est soumis à un réglage de traction avant la cage de laminoir (1).
  4. Procédé de laminage selon la revendication 3,
    caractérisé en ce que
    le réglage de traction se présente sous forme d'un réglage de traction minimale.
  5. Procédé de laminage selon la revendication 3 ou 4,
    caractérisé en ce que
    le produit à laminer (5) est soumis à un réglage d'enroulement avant la cage de laminoir (1).
  6. Procédé de laminage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la différence entre l'entrefer réel (s1) et l'entrefer théorique (s1*) est pour une partie compensée par la valeur corrective de positionnement des rouleaux ( a1).
  7. Procédé de laminage selon la revendication 6,
    caractérisé en ce que
    cette partie dépend de la force de laminage et/ou de la fréquence.
  8. Procédé de laminage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les rouleaux opérationnels (8) de la cage de laminoir (1) tournent à un régime de fonctionnement (n1),
    la force de laminage réelle (F1) est détectée au moins deux fois par rotation des rouleaux opérationnels (8) de la cage de laminoir (1),
    la valeur corrective de positionnement des rouleaux (a1) est communiquée à la cage de laminoir (1) sous forme de somme des composantes de fréquence,
    la composante de fréquence correspondant au régime de fonctionnement (n1) est communiquée à la cage de laminoir (1) après un temps de filtrage (T') et
    les rouleaux opérationnels (8) de la cage de laminoir (1) parcourent approximativement pendant le total du temps de réglage de la cage (T) et du temps de filtrage (T') un multiple en nombre impair d'une demi-rotation.
  9. Procédé de laminage dans lequel un produit à laminer en forme de barre (5), notamment de l'acier en barre ou du fil de fer (5), traverse d'abord une cage de laminoir avant et ensuite une arrière (2, 1),
    caractérisé en ce que
    aussi bien la cage de laminoir avant que l'arrière (2, 1) fonctionnent suivant un procédé de laminage selon l'une quelconque des revendications précédentes et que les sens de positionnement (y, x) des rouleaux opérationnels (8) des cages de laminoirs (2, 1) sont perpendiculaires les uns aux autres.
  10. Procédé de laminage selon la revendication 9,
    caractérisé en ce que
    la hauteur réelle (h0) et la largeur réelle (b0) du produit à laminer (5) sont détectées à un point de détection (6) derrière la cage de laminoir arrière (1) et
    qu'à partir de la hauteur réelle (h0) et de la largeur réelle (b0) les entrefers théoriques s1*, (s2*) sont déterminées à partir d'un plan de laminage pour les cages de laminoirs (1, 2) de manière à ce que la différence entre la hauteur réelle (h0) et une hauteur théorique (h0*) et la différence entre la largeur réelle (b0) et une largeur théorique (b0*) tendent vers zéro.
  11. Procédé de laminage selon la revendication 10,
    caractérisé en ce que
    la hauteur réelle (h0) et la largeur réelle (b0) sont détectées simultanément.
  12. Procédé de laminage selon la revendication 10 ou 11,
    caractérisé en ce que
    les entrefers théoriques (s1*, s2*) sont communiqués aux cages de laminoirs (1, 2) décalés dans le temps d'une durée d'attente (t), la durée d'attente (t) étant définie par le quotient entre une longueur de produit à laminer (l1) se trouvant entre la cage de laminoir arrière et la cage de laminoir avant (2, 1) et la vitesse de laminage (v1) de la cage de laminoir avant (2).
  13. Procédé de laminage selon la revendication 12,
    caractérisé en ce que
    un entrefer théorique supplémentaire (s1*) est défini pour la cage de laminoir arrière (1) de manière à ce que le rapport entre les erreurs relatives ( h, b) en hauteur et en largeur reste aussi constant que possible, l'erreur relative ( h) en hauteur étant donnée par la différence entre la hauteur réelle (h0) et la hauteur théorique (h0*) divisée par la hauteur théorique (h0*), et l'erreur relative ( b) en largeur par la différence entre la largeur réelle (b0) et la largeur théorique (b0*) divisée par la largeur théorique (b0*).
  14. Procédé de laminage selon l'une quelconque des revendications 10 à 13,
    caractérisé en ce que
    à partir de la hauteur réelle (h0), de la hauteur théorique (h0*), de la largeur réelle (b0) et de la largeur théorique (b0*), les entrefers théoriques (s1*, s2*) sont déterminés en fonctionnement commandé pour les cages de laminoirs (1, 2).
  15. Procédé de laminage selon l'une quelconque des revendications 10 à 14,
    caractérisé en ce que
    à partir des positionnements de rouleaux (a1, a2) des cages de laminoirs (1, 2), un entrefer théorique (s3*, s4*) est défini pour au moins une cage de laminoir (3, 4) installée en amont de la cage de laminoir avant (2).
EP99111050A 1998-07-14 1999-06-14 Procédé de laminage pour produits en forme de barres, notamment d'acier en barres ou de fils Expired - Lifetime EP0972581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831481A DE19831481A1 (de) 1998-07-14 1998-07-14 Walzverfahren für stabförmiges Walzgut, insbesondere Stabstahl oder Draht
DE19831481 1998-07-14

Publications (3)

Publication Number Publication Date
EP0972581A2 EP0972581A2 (fr) 2000-01-19
EP0972581A3 EP0972581A3 (fr) 2002-05-15
EP0972581B1 true EP0972581B1 (fr) 2003-10-22

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Country Status (8)

Country Link
US (1) US6112566A (fr)
EP (1) EP0972581B1 (fr)
JP (1) JP2000033408A (fr)
KR (1) KR20000011689A (fr)
AT (1) ATE252425T1 (fr)
BR (1) BR9902468A (fr)
DE (2) DE19831481A1 (fr)
ID (1) ID23065A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE517670C2 (sv) * 1998-07-10 2002-07-02 Abb Ab Förfarande och anordning för en kontinuerlig styrning av mellansparsspänningen i ett valsverk
DE19900428A1 (de) * 1999-01-08 2000-07-13 Sms Demag Ag Walzstraße zum Walzen von stabförmigem Walzgut, z. B. Stabstahl oder Draht
DE10106527A1 (de) * 2001-02-13 2002-08-29 Sms Demag Ag Verfahren zum Betreiben einer Walzstraße sowie Steuerungssystem für eine Walzstraße
DE10139513A1 (de) * 2001-08-10 2003-02-20 Sms Meer Gmbh Walzwerk zum Walzen von Halbzeug oder Stabmaterial
DE10202182B4 (de) * 2002-01-22 2004-02-12 Sms Meer Gmbh Arbeitsverfahren zum Walzen von Draht oder Feineisen
DE102005036184A1 (de) * 2004-12-07 2006-06-08 Sms Meer Gmbh Verfahren zur Regelung des Querschnitts von aus einer Drahtwalzstraße austretenden Drähten und Drahtwalzstraße
EP2135690A1 (fr) * 2008-06-19 2009-12-23 Siemens Aktiengesellschaft Train de laminage continental doté d'intégrations et/ou de détachements de cages de laminoir en fonctionnement continu
IT1400550B1 (it) * 2010-06-09 2013-06-11 Danieli Automation Spa Procedimento e dispositivo per il controllo dimensionale della sezione di un prodotto laminato.
CN101905245B (zh) * 2010-07-12 2012-02-08 武汉钢铁(集团)公司 超洁净低碳低硅钢盘条控轧工艺
CN103056171B (zh) * 2012-12-27 2015-03-25 鞍钢集团自动化公司 一种粗轧立辊短行程二次曲线控制方法
CN104249083B (zh) * 2013-06-26 2016-04-27 宝山钢铁股份有限公司 一种带钢头尾边缘降前馈控制方法
CN103978044B (zh) * 2014-05-30 2015-11-04 中冶南方工程技术有限公司 轧机加减速阶段的辊缝补偿控制方法及其装置
ES2732566T3 (es) * 2016-04-14 2019-11-25 Primetals Technologies Germany Gmbh Control robusto de tensión de banda
DE102016123069A1 (de) 2016-11-30 2018-05-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren und Vorrichtung zur Herstellung eines Leitersegmentes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744288A (en) * 1971-12-22 1973-07-10 Morgan Construction Co Tensiometer
SU1124882A3 (ru) * 1981-09-30 1984-11-15 Мицубиси Денки Кабусики Кайся (Фирма) Устройство дл регулировани геометрических размеров проката на стане непрерывной прокатки (его варианты)
JPS5933017A (ja) * 1982-08-17 1984-02-22 Toshiba Corp 圧延寸法制御装置
JPS5954412A (ja) * 1982-09-22 1984-03-29 Toshiba Corp 孔型圧延機の制御方法
US4909060A (en) * 1988-01-26 1990-03-20 United Engineering, Inc. Oil compression compensation system
DE3942452A1 (de) * 1989-12-22 1991-06-27 Schloemann Siemag Ag Ermittlung der federkennlinie eines vor- und fertiggeruestes
IT1280208B1 (it) * 1995-08-03 1998-01-05 Ceda Spa Costruzioni Elettrome Procedimento di controllo intergabbia del tiro del laminato e relativo dispositivo

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KR20000011689A (ko) 2000-02-25
DE19831481A1 (de) 2000-01-20
ID23065A (id) 2000-01-20
US6112566A (en) 2000-09-05
EP0972581A2 (fr) 2000-01-19
EP0972581A3 (fr) 2002-05-15
JP2000033408A (ja) 2000-02-02
ATE252425T1 (de) 2003-11-15
DE59907417D1 (de) 2003-11-27

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