EP1196257B1 - Procede et dispositif pour le laminage d'une bande metallique au moyen d'une cage de dressage - Google Patents

Procede et dispositif pour le laminage d'une bande metallique au moyen d'une cage de dressage Download PDF

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Publication number
EP1196257B1
EP1196257B1 EP00949144A EP00949144A EP1196257B1 EP 1196257 B1 EP1196257 B1 EP 1196257B1 EP 00949144 A EP00949144 A EP 00949144A EP 00949144 A EP00949144 A EP 00949144A EP 1196257 B1 EP1196257 B1 EP 1196257B1
Authority
EP
European Patent Office
Prior art keywords
metal strip
skin
rolling stand
velocity
pass rolling
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
EP00949144A
Other languages
German (de)
English (en)
Other versions
EP1196257A1 (fr
Inventor
Hans-Joachim Felkl
Joachim GÖPEL
Robert Winkler
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 EP1196257A1 publication Critical patent/EP1196257A1/fr
Application granted granted Critical
Publication of EP1196257B1 publication Critical patent/EP1196257B1/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
    • B21B37/56—Elongation control
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B2001/228—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 plates, strips, bands or sheets of indefinite length skin pass rolling or temper rolling
    • 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
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • the invention relates to a method and a device for rolling a metal strip using a skin pass mill, the metal strip being rolled in the skin pass mill is reduced in thickness.
  • the tempering of steel by means of of a skin pass mill primarily serves the goal properties due to a slight reduction in thickness versewalzen.
  • For the skin pass come in particular Flat products made of soft steels for cold forming DIN EN 10130 and DIN EN 10131, hot-rolled metal strip according to DIN EN 10051, primary material for electrolytic strip finishing (DIN 17163-Electrolytically galvanized cold rolled strip and sheet metal), high-strength steels and phosphor alloy steels and without bake hardening effects according to SEW 093 and SEW 094, soft micro-alloyed steels acc.
  • the dressing of soft steels (steel strips) for cold forming is carried out in particular with the aim of to eliminate pronounced yield strength of the steel strip, the Improve flatness of the steel belt and a defined one Adjust roughness of the belt surface.
  • JP-A-6-285505 describes a manufacturing process of hot-rolled metal strip using a skin pass mill and specifying a yield point.
  • the object is achieved by a method or a method Device for rolling a metal strip by means of a Skin pass mill according to claim 1 or claim 8 solved.
  • the metal strip is rolled into the skin pass mill its thickness is reduced, the speed of the metal strip when entering the skin pass mill and the speed of the metal strip when it leaves the skin pass mill independently be set by the train in the metal band. Doing so the roll gap in the skin pass depending on the train in a metal band in front of the skin pass mill and depending on the Train set in the metal band behind the skin pass. On in this way it is possible to achieve the desired thickness reduction adjust particularly precisely so that metal or steel strip of particularly high quality.
  • This invention Process is so precise that it is also possible to to reduce the yield strength of a steel at which a significant Reduction of the yield point only with a reduction in thickness in a very narrow area, e.g. between 0.475 and 0.525%, is possible. Accordingly, the invention becomes special advantageously used in metal strips in their Thickness between 0.1% and 5%, advantageously between 0.1 % to 1%.
  • the speed of the metal strip when it enters the skin pass mill and the speed of the metal strip when it runs out the skin pass mill in the ratio of the desired thickness of the Metal tape at the outlet from the skin pass mill to the thickness of the Metal tape set when entering the skin pass mill.
  • the thickness reduction is usually used as an extension of the metal strip or degree of stretch.
  • the speed of the metal strip when it enters the skin pass mill and the Speed of the metal belt when it leaves the skin pass mill in relation to the length of the metal strip at the inlet into the skin pass mill and the desired length of the metal strip set at the outlet from the skin pass mill.
  • a tape infeed speed adjuster for adjustment the speed of the metal strip as it enters the skin pass mill and a tape exit speed adjuster to adjust the speed of the metal belt when it runs out from the skin pass mill as well as a controller to regulate the Belt infeed speed adjuster and a controller for Regulation of the tape exit speed adjuster provided, where the controller of the tape infeed speed adjuster a setpoint for the speed of the metal strip when entering the skin pass mill and the controller of the Tape exit speed adjuster a setpoint for the Speed of the metal belt when it leaves the skin pass mill is supplied, and being the setpoint for the speed of the metal strip when it enters the skin pass mill and the target value for the speed of the metal strip when leaving the skin pass mill in the ratio of the desired Thickness of the metal strip when it leaves the skin pass mill to the thickness of the metal strip when entering the Skin pass mill can be set.
  • the setpoint for the speed of the metal strip at Infeed into the skin pass mill depending on a measured value for the speed of the metal strip when entering the skin pass mill and from a measured value for the speed of the metal strip corrected when leaving the skin pass mill.
  • the setpoint for the speed of the metal strip at Entry into the skin pass mill depending on a time Average of measured values for the speed of the Metal tape when entering the skin pass mill and from one time average of measured values for the speed of the metal strip corrected when leaving the skin pass mill.
  • the skin pass mill 7 has two work rolls 10 and 11 and two backup rolls 8 and 9.
  • the metal strip 1 runs through the skin pass mill 7 in the direction of arrow 6.
  • a tape infeed speed adjuster indicated by the rollers 2 and 3
  • a tape outlet speed adjuster indicated by the rollers 4 and 5.
  • the tape entry speed adjuster and the tape exit speed adjuster are designed as bridges. However, they can also be designed as levellers, S-rolls or reels.
  • a speed v i is impressed on the metal strip 1 in front of the skin pass mill 7 by means of the rollers 2 and 3.
  • a speed v 0 is impressed on the metal strip 1 behind the skin pass mill 7 by the rollers 4 and 5.
  • a controller 21 is provided, to which a setpoint value v * is supplied.
  • the controller 21 controls the rollers 4 and 5 in such a way that the speed v 0 of the metal strip 1 corresponds to a desired target speed v * when it leaves the skin pass mill 7.
  • Tension measuring rollers 12 and 13 are provided in front of and behind the skin pass mill 7, which measure the tension ⁇ i of the metal strip 1 in front of the skin pass mill 7 and the tension ⁇ o in the metal strip 1 behind the skin pass mill 7.
  • the values ⁇ i and ⁇ 0 together with their corresponding predefined setpoints ⁇ * / i and ⁇ * / o and a setpoint v w * for the speed v w of the skin pass mill 7 are input variables into a tension controller 14.
  • the tension controller 14 controls the speed v w of the skin pass mill 7.
  • the tension controller 14 outputs a tension-dependent correction value k ⁇ .
  • the tension measuring rollers 12 and 13 also have incremental encoders, not shown, which measure the rotation of the tension measuring rollers 12 and 13.
  • v o m is the speed of the metal strip 1 behind the skin pass mill 7 measured by the incremental encoder of the tension measuring roller 13
  • v i m is the speed of the metal strip 1 in front of the skin pass mill 7 measured by means of the incremental encoder of the tension measuring roller 12.
  • the controller 20 is used as the setpoint a value v * (1-e) is supplied for the speed, which is previously added to the train correction value k ⁇ .
  • the speed v i of the metal strip 1 is set independently of the train in the metal strip 1 when it enters the skin pass mill 7.
  • the speed v i of the metal strip 1 when it enters the skin pass mill 7 is set to a desired value v * (1-E *).
  • E * is the setpoint for the extension of metal strip 1.
  • a train observer 22 is provided.
  • the train observer - advantageously designed as a tension controller with an upstream dead band - outputs an additional setpoint dF w for the rolling force instead of a specific correction value k ⁇ when the strip tension reaches the limit of its adjustment range.
  • the rolling force remains largely constant.
  • FIG. 3 shows an advantageous exemplary embodiment of the invention.
  • the exemplary embodiment according to FIG. 2 is supplemented by a thickness correction controller 25.
  • the thickness correction controller 25 determines a correction value k E , which is fed to the controller 20 and by means of which, for example, the target value v * (1-E *) is corrected.
  • the thickness controller 25 determines the correction value k E in such a way that the time average e of the strip elongation value e corresponds to one of the nominal values of the thickness reduction E *.

Landscapes

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

Claims (8)

  1. Procédé de laminage d'un feuillard (1) métallique au moyen d'une cage (7) de dressage, le feuillard (1) métallique étant réduit en épaisseur par le laminage dans la cage (7) de dressage,
       caractérisé    en ce que l'on règle la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage indépendamment de la traction dans le feuillard (1) métallique et en ce que l'on règle l'emprise dans la cage (7) de dressage en fonction de la traction dans le feuillard (1) métallique en amont de la cage (7) de dressage et en fonction de la traction dans le feuillard (1) métallique en aval de la cage (7) de dressage.
  2. Procédé suivant la revendication 1,
       caractérisé    en ce que l'on réduit en épaisseur le feuillard (1) métallique entre 0,1 % et 5 %.
  3. Procédé suivant la revendication 2,
       caractérisé    en ce que l'on réduit en épaisseur le feuillard (1) métallique entre 0,1 % et 1 %.
  4. Procédé suivant la revendication 1, 2 ou 3,
       caractérisé    en ce que l'on règle la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage dans le rapport (1-E*) de l'épaisseur souhaitée du feuillard (1) métallique à la sortie de la cage (7) de dressage à l'épaisseur du feuillard (1) métallique à l'entrée dans la cage (7) de dressage.
  5. Procédé suivant la revendication 1, 2, 3 ou 4, dans lequel on prévoit un dispositif de réglage de la vitesse d'entrée du feuillard destiné à régler la vitesse (Vi) d'entrée du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et un dispositif de réglage de la vitesse de sortie du feuillard destiné à régler la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage, ainsi qu'un régulateur (20) de régulation du dispositif de réglage de la vitesse d'entrée du feuillard et un régulateur (21) de régulation du dispositif de réglage de la vitesse de sortie du feuillard et l'on envoie, au régulateur (20) du dispositif de réglage de la vitesse d'entrée du feuillard, une valeur de consigne pour la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et, au régulateur (21) du dispositif de réglage de la vitesse de sortie du feuillard, une valeur de consigne pour la vitesse (vo) du feuillard (1) métallique à la sortie de la cage (7) de dressage,
       caractérisé    en ce que l'on règle la valeur de consigne (v*(1-E)) de la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et la valeur de consigne (v*) de la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage dans le rapport (1-E*) de l'épaisseur souhaitée du feuillard (1) métallique à la sortie de la cage (7) de dressage à l'épaisseur du feuillard (1) métallique à l'entrée dans la cage (7) de dressage.
  6. Procédé suivant la revendication 1, 2, 3, 4 ou 5,
       caractérisé    en ce que l'on corrige la valeur de consigne (v*(1-E*)) de la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage en fonction d'une valeur (vi,m) de mesure de la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et d'une valeur de mesure (vo,m) de la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage.
  7. Procédé suivant la revendication 1, 2, 3, 4, 5 ou 6,
       caractérisé    en ce que l'on corrige la valeur de consigne (v*(1-E*)) de la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage en fonction d'une valeur moyenne (vi,m) dans le temps de valeurs de mesure (vi,m) de la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et d'une valeur de moyenne (vo,m) de valeurs de mesure (Vo,m) de la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage.
  8. Dispositif de laminage d'un feuillard (1) métallique comprenant une cage (7) de dressage suivant un procédé selon l'une des revendications précédentes, dans lequel le feuillard (1) métallique est réduit en épaisseur par le laminage dans la cage (7) de dressage,
       caractérisé    en ce que le dispositif de laminage du feuillard (1) métallique comprend un dispositif de réglage de la vitesse d'entrée du feuillard pour régler, indépendamment de la traction dans le feuillard (1) métallique, la vitesse (vi) du feuillard (1) métallique à l'entrée dans la cage (7) de dressage et un dispositif de réglage de la vitesse de sortie du feuillard pour régler, indépendamment de la traction dans le feuillard (1) métallique, la vitesse (v0) du feuillard (1) métallique à la sortie de la cage (7) de dressage ainsi qu'un régulateur (22) de traction destiné à régler l'emprise dans la cage de dressage en fonction de la traction dans le feuillard (1) métallique.
EP00949144A 1999-07-15 2000-07-04 Procede et dispositif pour le laminage d'une bande metallique au moyen d'une cage de dressage Expired - Lifetime EP1196257B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19933239A DE19933239B4 (de) 1999-07-15 1999-07-15 Verfahren und Einrichtung zum Walzen eines Metallbandes mittels eines Dressiergerüstes
DE19933239 1999-07-15
PCT/DE2000/002172 WO2001005529A1 (fr) 1999-07-15 2000-07-04 Procede et dispositif pour le laminage d'une bande metallique au moyen d'une cage de dressage

Publications (2)

Publication Number Publication Date
EP1196257A1 EP1196257A1 (fr) 2002-04-17
EP1196257B1 true EP1196257B1 (fr) 2003-09-17

Family

ID=7914923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00949144A Expired - Lifetime EP1196257B1 (fr) 1999-07-15 2000-07-04 Procede et dispositif pour le laminage d'une bande metallique au moyen d'une cage de dressage

Country Status (5)

Country Link
EP (1) EP1196257B1 (fr)
AT (1) ATE249896T1 (fr)
DE (2) DE19933239B4 (fr)
RU (1) RU2252090C2 (fr)
WO (1) WO2001005529A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334931B (fr) * 1969-06-06 1971-05-10 Asea Ab
FR2201142A1 (en) * 1972-09-28 1974-04-26 Carnaud & Forges Strip thickness control system - for a reversing cold rolling mill
JPS5942568B2 (ja) * 1978-12-15 1984-10-16 新日本製鐵株式会社 調質圧延設備の張力制御方法
JPS59127917A (ja) * 1983-01-12 1984-07-23 Nippon Steel Corp スキンパスミルの張力制御方法
JPS63256209A (ja) * 1987-04-14 1988-10-24 Toshiba Corp 圧延機の伸び率制御装置
JPH01180713A (ja) * 1987-12-28 1989-07-18 Kawasaki Steel Corp 調質圧延機の伸び率制御方法
JPH04305305A (ja) * 1991-03-29 1992-10-28 Kawasaki Steel Corp 調質圧延機の伸率制御方法
JP3094174B2 (ja) * 1991-09-11 2000-10-03 株式会社日立製作所 伸び率制御方法及び装置
JPH06285505A (ja) * 1993-03-31 1994-10-11 Nisshin Steel Co Ltd 溶融めっき用熱延鋼帯の製造方法

Also Published As

Publication number Publication date
RU2252090C2 (ru) 2005-05-20
WO2001005529A1 (fr) 2001-01-25
EP1196257A1 (fr) 2002-04-17
ATE249896T1 (de) 2003-10-15
DE50003743D1 (de) 2003-10-23
DE19933239A1 (de) 2001-01-25
DE19933239B4 (de) 2005-04-07

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