EP0998990B1 - Verfahren und Einrichtung zum Regeln der Breite eines Metallbandes - Google Patents
Verfahren und Einrichtung zum Regeln der Breite eines Metallbandes Download PDFInfo
- Publication number
- EP0998990B1 EP0998990B1 EP99120828A EP99120828A EP0998990B1 EP 0998990 B1 EP0998990 B1 EP 0998990B1 EP 99120828 A EP99120828 A EP 99120828A EP 99120828 A EP99120828 A EP 99120828A EP 0998990 B1 EP0998990 B1 EP 0998990B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- width
- metal strip
- rolling
- tension
- stand
- 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
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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
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
Definitions
- the invention relates to a method and a device for regulating the width of a metal strip in a rolling mill with at least one roll stand.
- EP 0 375 095 B1 describes a generic method and a generic device for continuous Regulating the strip width when finishing hot strip a multi-stand rolling mill known, the range at least behind the finishing line and the tape thickness behind the last scaffold and changes in thickness over one Thickness control loop on the last stand can be adjusted. there the bandwidth will be continuous immediately after the last one Stitch and measured before the penultimate stitch. The measured values are fed to a width controller with feedforward control the width of the metal strip by influencing the roll gap on the last scaffold.
- the disadvantage of this procedure is that by interfering with the setting of the last The tape thickness is also changed if it is not is kept constant by complex compensation.
- JP (A) 62289307 suggests the excess width of one material to be rolled by means of a loop lifter and a Minimize width measurement.
- JP (A) 57139415 describes a method for a thickness deviation to minimize, in particular the output side Width of a material at the end of a rolling mill with a predetermined product width is compared.
- JP (A) 54123556 describes a method for width control a rolled material, with the motors cascaded arranged roll stands taking into account each one only measured according to the affected roll stands Width deviation can be regulated.
- the device for regulating the width of a metal strip is the Width of the metal strip measured in front of a first roll stand.
- the train in the Metal tape using a width regulator in front of the first Roll stand downstream second roll stand depending the width of the metal strip measured in front of the first roll stand set, with the width of the metal band behind measured the second mill stand and the width controller depending the one measured behind the second roll stand Width of the metal strip, a target value for the width of the Metal strip and depending on the rolling parameters to the Properties of the rolling mill adapted.
- the adaptation is advantageously carried out online.
- the first and the second mill stand the last two mill stands a multi-stand rolling mill.
- the tension in the metal band is adjusted by means of a loop lifter.
- the tension in the metal strip is adjusted by means of a minimum tension control.
- the train in the metal strip by specifying an additional setpoint set for a train regulation.
- reference numeral 4 designates a metal band which in is rolled on a rolling mill.
- the rolling mill has rolling stands on, indicated in FIG 1 by the rollers 5, 6, 7 and 8 are.
- the indices i denote the number of the Rolling stand. This is the rolling stand with rollers 5 and 6 the i-1-th and the roll stand with the rollers 7 and 8 the i-th Rolling stand.
- the mill stands are driven by motors 9 and 10, which their target speeds n * / i-1 or n * / i of one higher-level speed setpoint generator 13 received.
- a loop lifter 12 arranged by means of which the train in the metal strip 4 between the i-1th and the i-th roll stand is set.
- Input variable in the speed setpoint generator 13 is i.a. the Loop lifter angle ⁇ .
- the loop lifter is by means of a Loop controller 2 regulated.
- Behind the i-th mill stand a width measuring device 11 is arranged, which has a measured value w for the width of the metal strip 4 provides. This measured value w the Width of the metal strip 4 is determined by means of a summation point 17 deducted from a desired value w * of the width of the metal strip.
- This difference is the input variable for a width controller 1, which supplies an additional set tension value ⁇ T *. through A summation point 18 becomes this additional tape tension setpoint ⁇ T * added to a strip tension setpoint T *. The Sum forms the setpoint for belt tension controller 2.
- FIG. 1 shows the exemplary use of the invention in connection with an adjustment of the strip tension by means of a loop lifter 12
- FIG. 2 shows the exemplary use of the invention for a rolling train with minimal tension control.
- Reference numerals 4 to 11, 17, i-1, i, w, and w * have the same meaning as in FIG. 1.
- a width controller 19 is provided which has an additional strip tension setpoint ⁇ T * i-1, i in Dependence of the difference between the desired value w * of the width of the metal strip 4 and the measured value w of the width of the metal strip 4 is determined.
- a strip tension measuring device 15 which delivers a measured value T i-1, i of the strip tension between the i-1-th and the i-th roll stand. This measured value T i-1, i is fed to a speed setpoint generator 14.
- Input variables in the speed setpoint generator 14 include the measured value T i-1, i and the additional strip tension setpoint ⁇ T * / i-1, i.
- the speed setpoint generator 14 determines the setpoints n * i-1 and n * i for the speeds of the i-1-th and i-th roll stand in such a way that a train corresponding to the sum T * / i-1, i + ⁇ T * / i-1, i.
- FIG. 3 shows the interaction of a width controller 26 with a monitor controller 27 3 shows a loop lifter 12, but the monitor controller can 27 also in connection with a minimum draft control - As described in FIG 2 - are used.
- Reference numerals 4 to 8, 11, 12, 18, i-1, i, w, w *, T * and ⁇ T * correspond to the corresponding reference symbols in FIG. 1.
- the monitor controller 27 has an exemplary embodiment a PT1 element 20 and a dead time element 21. Input of the monitor controller is the additional tape tension setpoint that is determined by the Width controller 26 is determined. The output of the monitor controller 27 becomes a measured value w by means of a summation point 22 added to the width of the metal strip 7.
- FIG. 4 shows an alternative embodiment, wherein a Width controller 35 is adapted.
- 4 shows three roll stands: an i-2-th roll stand, indicated by the rolls 40 and 41, an i-1th mill stand, indicated by the rolls 42 and 43, as well as an i-th roll stand, indicated by the Rolls 44 and 45.
- a metal strip is made by means of these roll stands 4 rolled.
- Loop lifters are used to adjust the tape tension 12 and 33 are provided.
- the embodiment shown is also in connection with a minimum draft control can be used accordingly as in FIG. 2.
- Reference numerals 2, 4, 11, 12, 17, 18, w *, T * and ⁇ T * in FIG. 4 correspond to the corresponding reference numerals in FIG. 1.
- w i in FIG. 4 corresponds to w in FIG. 1.
- another width measuring device 30 provided in front of the i-1-th roll stand.
- the width measuring device 30 supplies a measured value w i-2 of the width of the metal strip 4 in front of the i-1-th roll stand.
- the measured value w i-2 is subtracted from a desired value w * for the width of the metal strip 4 by means of a summation point 34.
- the difference is the input variable in a width controller 35, which determines an additional strip tension setpoint .DELTA.T * for the tension in the metal strip 4 between the i-1-th and the i-th roll stand.
- the width controller 35 is adapted by means of an adapter 36 as a function of rolling parameters x 1 to x n and the difference between the values w * and w i .
- the adaptation takes place in such a way that the difference between w * and w i is as small as possible or zero.
- the adaptation is advantageously carried out by means of a neural Network or by means of a method for parameter identification.
- the invention is illustrated in the exemplary embodiments according to FIG. 1 to 4 anywhere in a multi-stand Rolling mill used. It can also be provided to be used at several points in a multi-stand rolling mill. However, the rolling mill is particularly advantageous End of a, especially multi-stand, rolling mill.
- the i-th roll stand designates the last roll stand the rolling mill and the i-1-th mill stand the penultimate Roll stand of the rolling mill.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Description
- FIG 1
- eine Zugregelung mittels Schlingenregler
- FIG 2
- eine Minimalzugregelung
- FIG 3
- einen Breitenregler mit Monitorregler
- FIG 4
- einen Breitenregler mit Adaption.
Claims (7)
- Verfahren zum Regeln der Breite (w) eines Metallbandes (4) in einer Walzstraße mit zumindest zwei Walzgerüsten, wobei die Breite (w) des Metallbandes (4) vor einem ersten Walzgerüst gemessen wird, wobei zur Einstellung der Breite (w) des Metallbandes (4) der Zug im Metallband (4) mittels eines Breitenreglers vor einem dem ersten Walzgerüst nachgeordneten zweiten Walzgerüst in Abhängigkeit der vor dem ersten Walzgerüst gemessenen Breite (w) des Metallbandes (4) eingestellt wird, wobei die Breite (w) des Metallbandes (4) hinter dem zweiten Walzgerüst gemessen wird dadurch gekennzeichnet, daß der Breitenregler in Abhängigkeit der hinter dem zweiten Walzgerüst gemessenen Breite (w) des Metallbandes (4), eines Sollwertes (w*) für die Breite des Metallbandes (4) und in Abhängigkeit von Walzparametern (x1 - xn) an die Eigenschaften der Walzstraße adaptiert wird.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Adaption online erfolgt. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das erste und das zweite Walzgerüst die letzten beiden Walzgerüste einer mehrgerüstigen Walzstraße sind. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Zug im Metallband (4) mittels eines Schlingenhebers eingestellt wird. - Verfahren nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass der Zug im Metallband (4) mittels einer Minimalzugregelung eingestellt wird. - Verfahren nach Anspruch 5,
dadurch gekennzeichnet, dass der Zug im Metallband (4) durch Vorgabe eines Bandzug-Zusatzsollwertes (ΔT*, ΔT * / i-1,i) für eine Zugregelung eingestellt wird. - Walzstraße mit zumindest zwei Walzgerüsten und einer Einrichtung zum Regeln der Breite (w) eines Metallbandes (4) zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6, wobei die Einrichtung zum Regeln der Breite (w) des Metallbandes (4) eine Breitenmeßeinrichtung zur Messung der Breite (w) des Metallbandes (4) vor einem ersten Walzgerüst aufweist und die Einrichtung zum Regeln der Breite (w) des Metallbandes (4) einen Breitenregler zur Einstellung des Zuges im Metallband (4) vor einem dem ersten Walzgerüst nachgeordneten zweiten Walzgerüst in Abhängigkeit der vor dem ersten Walzgerüst gemessenen Breite (w) des Metallbandes (4) aufweist, wobei die Einrichtung zum Regeln der Breite (w) eine Breitenmesseinrichtung zur Messung der Breite (w) des Metallbandes (4) hinter dem zweiten Walzgerüst aufweist; dadurch gekennzeichnet, daß die Einrichtung zum Regeln der Breite (w) des Metallbandes (4) einen Adaptierer zur Adaption des Breitenreglers in Abhängigkeit der hinter dem zweiten Walzgerüst gemessenen Breite (w) des Metallbandes (4), eines Sollwertes (w*) für die Breite des Metallbandes (4) und in Abhängigkeit von Walzparametern (x1 - xn) an die Eigenschaften der Walzstraße aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19851053A DE19851053A1 (de) | 1998-11-05 | 1998-11-05 | Verfahren und Einrichtung zum Regeln der Breite eines Metallbandes |
DE19851053 | 1998-11-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0998990A2 EP0998990A2 (de) | 2000-05-10 |
EP0998990A3 EP0998990A3 (de) | 2002-12-18 |
EP0998990B1 true EP0998990B1 (de) | 2004-10-06 |
Family
ID=7886824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120828A Expired - Lifetime EP0998990B1 (de) | 1998-11-05 | 1999-10-25 | Verfahren und Einrichtung zum Regeln der Breite eines Metallbandes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0998990B1 (de) |
AT (1) | ATE278485T1 (de) |
DE (2) | DE19851053A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101443682B (zh) * | 2006-05-12 | 2011-03-09 | 东丽工程株式会社 | 滤色器制造方法及其装置 |
EP2998040A1 (de) | 2014-09-17 | 2016-03-23 | Primetals Technologies Germany GmbH | Breiteneinstellung bei einer Fertigstraße |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2249366A1 (de) * | 1971-10-11 | 1973-04-19 | Hitachi Ltd | Verfahren und vorrichtung zur kontrolle und steuerung der breite eines gewalzten bandes |
JPS54123556A (en) * | 1978-03-20 | 1979-09-25 | Toshiba Corp | Controller for rolling mill |
JPS57139415A (en) * | 1981-02-20 | 1982-08-28 | Sumitomo Metal Ind Ltd | Controlling method for sheet breadth of continuous hot rolling mill |
JPS62289307A (ja) * | 1986-06-06 | 1987-12-16 | Kawasaki Steel Corp | 圧延機における板幅制御方法 |
-
1998
- 1998-11-05 DE DE19851053A patent/DE19851053A1/de not_active Ceased
-
1999
- 1999-10-25 EP EP99120828A patent/EP0998990B1/de not_active Expired - Lifetime
- 1999-10-25 DE DE59910729T patent/DE59910729D1/de not_active Expired - Lifetime
- 1999-10-25 AT AT99120828T patent/ATE278485T1/de active
Also Published As
Publication number | Publication date |
---|---|
EP0998990A3 (de) | 2002-12-18 |
ATE278485T1 (de) | 2004-10-15 |
DE19851053A1 (de) | 2000-05-18 |
EP0998990A2 (de) | 2000-05-10 |
DE59910729D1 (de) | 2004-11-11 |
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