EP1110634B1 - Dispositif de commande pour laminoirs à une ou plusieurs cages - Google Patents

Dispositif de commande pour laminoirs à une ou plusieurs cages Download PDF

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Publication number
EP1110634B1
EP1110634B1 EP00126993A EP00126993A EP1110634B1 EP 1110634 B1 EP1110634 B1 EP 1110634B1 EP 00126993 A EP00126993 A EP 00126993A EP 00126993 A EP00126993 A EP 00126993A EP 1110634 B1 EP1110634 B1 EP 1110634B1
Authority
EP
European Patent Office
Prior art keywords
strip
rotational
control unit
speed
control device
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
EP00126993A
Other languages
German (de)
English (en)
Other versions
EP1110634A3 (fr
EP1110634A2 (fr
Inventor
Hans-Joachim Dipl.-Ing. Felkl
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1110634A2 publication Critical patent/EP1110634A2/fr
Publication of EP1110634A3 publication Critical patent/EP1110634A3/fr
Application granted granted Critical
Publication of EP1110634B1 publication Critical patent/EP1110634B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • Such a control device is z. B. from DE-A-41 41st 742 known.
  • the invention is based on the object, a scheme of Band thickness of the rolling mill passing through the metal strip reach, where the outlet side mass flow of the rolling mill can be imprinted with high dynamics.
  • a second speed control unit having a z. B. as an S-roll trained inlet side roller assembly of the rolling train is assigned and by means of which the speed of the inlet side Roller arrangement as a function of the speed setpoint the outlet side roller assembly, the target band thickness of the Metal strip at the inlet of the rolling train and the deviation of the Band thickness of this target band thickness is adjustable, both the outlet and the inlet speed, the latter depending on the measured inlet thickness of the metal strip, and thus over the mass flow law the outlet thickness be fixed rigidly. This can be an improvement the achievable tolerances especially in dynamic Achieve transitional phases.
  • the second speed control unit associated with a control which the second speed control unit depending on the predefinable inlet side Target strip thickness and the deviation of the strip thickness controlled by this target band thickness.
  • This is the control the second speed control unit advantageous over a first mass flow control member to a strip thickness gauge connected, preferably in the strip running direction downstream arranged the inlet-side roller assembly of the rolling train is.
  • the inventive Control device advantageously a third speed control unit on, which is assigned to the rolling stand and by means of derer the speed of the roll stand in dependence of the predetermined for the outlet side roller assembly fixed Speed setpoint taking into account in the range the rolling stand occurring operating point shifts adjustable is.
  • the third speed control unit of the control device advantageously connected to a second mass flow control element, the at a in the tape running direction upstream of the Roll stand arranged first Bandzugmesselement and to a arranged in the strip running direction downstream of the roll stand second Bandzugmesselement is connected.
  • the rolling stand a Switzerlandregelhow, which is connected to the first Bandzugmesselement and by means of which the feed train of the rolling stand on the Employment of the same controlled by a first control algorithm is assigned, and a scaffolding unit, by means of derer via a second control algorithm and a drive the rolling mill as an actuator on a nip the mill stand constant train course is feasible.
  • a rolling mill shown in the single figure of the drawing has an inlet-side roller assembly 1, which, like can be seen from the figure, as S-roll 1 is formed.
  • tape direction follows downstream of the inlet side S-roll 1 a rolling stand 3, through the nip through the metal strip of an outlet side Roller assembly 4, also as an S-roll. 4 is formed, is supplied.
  • the invention is based on a one-armed Rolling mill shown; Of course it is, too possible, a control device according to the invention in multi-stand Walz Non use, in which case each of the outgoing S-roll 4 upstream rolling stand on the location of the roll stand 3 of the rolling mill according to the figure occurs.
  • the mass flow-oriented control device initially comprises a first speed control unit 5, which is associated with the roll-out side roller arrangement 4 of the rolling train designed as an S-roll 4.
  • a fixed speed is specified for the outlet side S-roll 4, whereby a roller peripheral speed is fixed for the outlet side S-roll 4, by a belt speed V 1 * of the metal strip leaving the rolling line is set.
  • the outlet-side S-roll 4 for the rolling train is a speed-controlled "Speedmaster".
  • the control device further includes a second speed control unit 6, which is assigned to the inlet side S-roll 1.
  • the second speed control unit 6 is therefore associated with a control element 7, which is connected via a first mass flow control member 8 with a belt thickness gauge 9, which is arranged downstream of the inlet side S-roll 1 in the rolling train. Furthermore, a calculated speed value Vo * is entered into the control element 7, which is determined as a function of the setpoint value V 1 * for the speed at the outlet side S-roll 4, ignoring any band thickness deviations. In the control element 7, this desired value V 0 * is superimposed with a correction quantity determined in the first mass flow control element 8 in accordance with the actual strip thickness of the metal strip detected in the strip thickness measuring device 9, so that the second speed control unit 6 regulates the inlet side S-roll 1 of the rolling train, taking into account the mass flow law ,
  • first speed control unit 5 and the second Speed control unit 6 will both the outlet and the entry speed, the latter taking into account actually measured at the inlet side of the rolling mill Band thickness of the metal strip, and thus on the mass flow law the outlet side strip thickness of the metal strip rigidly controlled.
  • the outlet side strip thickness of the metal strip rigidly controlled.
  • a third speed control unit 10 on, by means of which the speed and thus the roller peripheral speed of the rolling mill 3 can be controlled is.
  • the fixed predetermined outlet side belt speed V 1 * is entered as a base size. Furthermore, the third speed control unit 10 is associated with a second mass flow control member 11, which in turn is connected to a first Bandzugmesselement 12 arranged upstream of the roll stand 3 in the strip running direction and to a second strip tension measuring element 13 arranged downstream of the rolling stand 3 in the strip running direction.
  • Working point shifts of the roll stand 3 result in a change in the material lead, which can lead to strip thickness errors.
  • Such an operating point shift or the resulting material lead leads to differences between the measured value of the first strip tension element 12 and that of the second strip tension element 13. If such measured value differences occur, they are detected in the second mass flow control element 11 and taken into account in the creation of a correction quantity, with which in third speed control unit 10, the predetermined belt outlet speed V 1 * is superimposed.
  • a material advance resulting from working point offsets of the roll stand 3 is kept within very narrow limits, so that hardly any or no strip thickness errors of the metal strip can occur.
  • the intake run of the roll stand 3 is by means of a Switzerlandregelmati 14 on the employment of the rolling mill 3 by a controlled first control algorithm.
  • a Ceibismaschine 14 On the employment of the rolling mill 3 by a controlled first control algorithm.
  • a scaffold control unit 15 whose actuator is a drive of the roll stand 3.
  • the inventive control device is an improvement the strip thickness during rolling by mastering as Disturbance in control concepts acting according to the law of mass flow Material advance reached.
  • the outlet-side mass flow at the outlet side S-roll 4 is highly accurate by the Manipulated variables of the speed setpoints on the outlet side S-roll 4 impressed with their high dynamics. This is in the case of the control device according to the invention the target size or the strip thickness of the metal strip at the outlet side the rolling mill embossed and not more - as in the State of the art - a disturbance in the target size regulated.
  • the individual plant components of the rolling mill become into an associated parent, on the mass flow law embedded rule based concept.

Landscapes

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

Claims (7)

  1. Dispositif de régulation pour un laminoir pourvu d'au moins une cage (3) de laminoir et d'un ensemble (4) de rouleaux situé du côté de sortie par rapport à la cage (3) de laminoir et réalisé par exemple sous forme de rouleau en S,
    le dispositif de régulation étant conçu comme régulation de débit massique, au moyen de laquelle on peut réguler l'épaisseur d'un feuillard métallique à laminer dans le laminoir,
    le dispositif de régulation comportant une première unité (5) de régulation de vitesse de rotation associée à l'ensemble (4) de rouleaux,
    caractérisé en ce que :
    une consigne fixe de vitesse de rotation pour l'ensemble (4) de rouleaux du côté de sortie peut être prescrite à la première unité (5) de régulation de vitesse de rotation, consigne qui définit une vitesse (V1*) de consigne de sortie du feuillard métallique à laminer,
    et en ce que l'ensemble (4) de rouleaux du côté de sortie peut être exploité par la régulation à vitesse de rotation constante, au moyen de la première unité (5) de régulation de vitesse de rotation, en tant que prescripteur de vitesse (« speed master ») du laminoir.
  2. Dispositif de régulation suivant la revendication 1, qui comprend une deuxième unité (6) de régulation de vitesse de rotation qui est associée à un ensemble (1) de rouleaux du laminoir qui est situé du côté d'entrée et qui est par exemple réalisé sous forme de rouleau en S, et au moyen de laquelle la vitesse de rotation de l'ensemble (1) de rouleaux du côté d'entrée peut être régulée en fonction de la consigne (V1*) de vitesse de rotation de l'ensemble (4) de rouleaux du côté de sortie, de l'épaisseur (H0*) de consigne du feuillard métallique à l'entrée du laminoir et de l'écart (Δh0) de l'épaisseur du feuillard par rapport à cette épaisseur (H0*) de consigne.
  3. Dispositif de régulation suivant la revendication 2, suivant lequel un élément (7) de commande est associé à la deuxième unité (6) de régulation de vitesse de rotation, élément qui commande la deuxième unité (6) de régulation de vitesse de rotation en fonction de l'épaisseur (H0*) prescriptible de consigne du feuillard du côté d'entrée et de l'écart (Δh0) de l'épaisseur du feuillard par rapport à cette épaisseur (H0*) de consigne.
  4. Dispositif de régulation suivant la revendication 3, suivant lequel l'élément (7) de commande de ta deuxième unité (6) de régulation de vitesse de rotation est raccordé par l'intermédiaire d'un premier organe (8) de régulation de débit massique à un appareil (9) de mesure d'épaisseur de feuillard qui est disposé, dans la direction d'avancement du feuillard, en aval de l'ensemble (1) de rouleaux du côté d'entrée du laminoir.
  5. Dispositif de régulation suivant l'une des revendications 1 à 4, qui comprend une troisième unité (10) de régulation de vitesse de rotation qui est associée à la cage (3) de laminoir et au moyen de laquelle la vitesse de rotation de la cage (3) de laminoir peut être régulée en fonction de la consigne (V1*) fixe de vitesse de rotation prescrite pour l'ensemble (4) de rouleaux de sortie, en tenant compte des déplacements de point de travail apparaissant dans la région de la cage (3) de laminoir.
  6. Dispositif de régulation suivant la revendication 5, suivant lequel la troisième unité (10) de régulation de vitesse de rotation est raccordée à un deuxième organe (11) de régulation de débit massique, qui est raccordé à un premier élément (12) de mesure de traction de feuillard disposé en amont de la cage (3) de laminoir dans la direction d'avancement du feuillard et à un deuxième élément (13) de mesure de traction de feuillard disposé en aval de la cage (3) de laminoir dans la direction d'avancement du feuillard.
  7. Dispositif de régulation suivant la revendication 6, suivant lequel sont associées à la cage (3) de laminoir une unité (14) de régulation de traction, qui est raccordée au premier élément (12) de mesure de traction de feuillard et au moyen de laquelle la traction d'entrée de la cage (3) de laminoir peut être contrôlée par un premier algorithme de régulation en réglant cette cage, et une unité (15) de régulation de cage, au moyen de laquelle, à l'aide d'un deuxième algorithme de régulation et d'un entraínement de la cage (3) de laminoir en tant qu'organe final, on peut réaliser une courbe de traction constante sur l'emprise de la cage (3) de laminoir.
EP00126993A 1999-12-22 2000-12-08 Dispositif de commande pour laminoirs à une ou plusieurs cages Expired - Lifetime EP1110634B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19962183A DE19962183A1 (de) 1999-12-22 1999-12-22 Regeleinrichtung für ein- oder mehrgerüstige Walzstrassen
DE19962183 1999-12-22

Publications (3)

Publication Number Publication Date
EP1110634A2 EP1110634A2 (fr) 2001-06-27
EP1110634A3 EP1110634A3 (fr) 2003-03-12
EP1110634B1 true EP1110634B1 (fr) 2005-02-16

Family

ID=7933919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126993A Expired - Lifetime EP1110634B1 (fr) 1999-12-22 2000-12-08 Dispositif de commande pour laminoirs à une ou plusieurs cages

Country Status (4)

Country Link
EP (1) EP1110634B1 (fr)
AT (1) ATE289228T1 (fr)
DE (2) DE19962183A1 (fr)
ES (1) ES2235752T3 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636743A (en) * 1970-06-15 1972-01-25 Allegheny Ludlum Ind Inc Rolling mill control system
DE3174969D1 (en) * 1981-04-29 1986-08-28 Kawasaki Steel Co Automatic control methods and devices for rolling mills
JPS61189811A (ja) * 1985-02-15 1986-08-23 Sumitomo Metal Ind Ltd 板厚制御方法
DE4141742A1 (de) * 1991-12-13 1993-06-17 Licentia Gmbh Verfahren zur dickenregelung von bandfoermigem walzmaterial in bandstrassen

Also Published As

Publication number Publication date
EP1110634A3 (fr) 2003-03-12
ATE289228T1 (de) 2005-03-15
EP1110634A2 (fr) 2001-06-27
DE50009545D1 (de) 2005-03-24
DE19962183A1 (de) 2001-07-12
ES2235752T3 (es) 2005-07-16

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