EP1173295A1 - Rolling process for a metal strip and corresponding rolling device - Google Patents

Rolling process for a metal strip and corresponding rolling device

Info

Publication number
EP1173295A1
EP1173295A1 EP00920691A EP00920691A EP1173295A1 EP 1173295 A1 EP1173295 A1 EP 1173295A1 EP 00920691 A EP00920691 A EP 00920691A EP 00920691 A EP00920691 A EP 00920691A EP 1173295 A1 EP1173295 A1 EP 1173295A1
Authority
EP
European Patent Office
Prior art keywords
rolling
metal strip
lubrication
lubricant
roll 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.)
Granted
Application number
EP00920691A
Other languages
German (de)
French (fr)
Other versions
EP1173295B1 (en
Inventor
Hans-Peter Richter
Rüdiger Holz
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1173295A1 publication Critical patent/EP1173295A1/en
Application granted granted Critical
Publication of EP1173295B1 publication Critical patent/EP1173295B1/en
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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B1/24—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 in a continuous or semi-continuous process
    • B21B1/28—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 in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the present invention relates to a rolling method for a metal strip with a metal strip width, the metal strip being rolled in at least one roll stand, an amount of lubricant being applied to the metal strip distributed over the metal strip width, and to a corresponding roller arrangement.
  • Such rolling processes and arrangements are generally known.
  • the object of the present invention is to provide a rolling method and a corresponding roller arrangement, by means of which even more even, more even strips can be produced.
  • the object is achieved for the rolling process in that a lubrication curve is determined behind the roll stand over the metal strip width and used to adjust the amount and / or the distribution of the lubricant and / or at least one rolling parameter.
  • a lubrication profile detection device for determining a lubrication profile over the metal strip width is arranged downstream of the roll stand in the rolling arrangement.
  • the lubrication distribution can be determined directly or indirectly.
  • the metal strip behind the roll stand has a temperature profile over the metal strip width.
  • This temperature profile can be recorded - for example by means of an infrared or CCD camera - and the lubrication profile can then (indirectly) be determined from the temperature profile.
  • the lubrication process can directly.
  • B. can be determined based on a surface texture of the metal strip behind the roll stand.
  • the surface quality of the metal strip can, for example, be optically recorded on one or both sides of the strip.
  • information about the lubrication process is output to an operator for the roll stand and for the operator to adjust the amount and / or the distribution of the lubricant and / or the at least one rolling parameter.
  • the rolling process works more comfortably if the information about the lubrication process is output to a controller and the controller adjusts the amount and / or the distribution of the lubricant and / or the at least one rolling parameter.
  • the lubrication conditions are preferably only influenced locally. This is usually done by changing the deficiencies and / or the distribution of the lubricant.
  • systematic lack of lubrication e.g. B. Lack of lubrication at both ends of the tape across the metal bandwidth, z. B. influence on the roll bending of the work roll.
  • other rolling parameters can also be influenced.
  • the change in the amount and distribution of the lubricant can e.g. B.
  • the lubricating device has a basic lubrication device and an additional lubrication device and the amount and distribution of the lubricant to be applied by the basic lubrication device is constant and the amount and / or the distribution of the lubricant to be applied by the additional lubrication device is adjustable.
  • the rolling plan computer gradually learns which lubricant quantities and distributions for certain Metal straps or pass schedules are required.
  • the metal strip can consist of various metals, for example steel, copper, aluminum or brass.
  • Figure 2 shows a temperature profile
  • Figure 3 shows a rolling arrangement from the side.
  • a metal strip 1 is rolled in a roll stand 2 with work rolls 3 at a rolling speed v.
  • the roll stand 2 is according to FIG. 1 designed as a two-roll mill stand. So it only has the work rolls 3.
  • the roll stand 2 could also have backup rolls, possibly also intermediate rolls, shifting systems in one or more of the roll planes, etc. or z. B. be designed as a so-called twenty-roll mill stand.
  • the metal strip 1 has a metal strip width b.
  • the metal strip 1 consists of steel. But it could also be made of another metal, e.g. B. copper, aluminum or brass.
  • a lubrication device 4 is assigned to the roll stand 2. According to Figure 1, it is arranged in front of the roll stand 2. By means of the lubrication device 4, an amount of lubricant 5 (for example an oil-water mixture) is applied to the metal strip 1 from above and below over the metal strip width b.
  • the lubrication device 4 has a basic lubrication device 4 ′ and an additional lubrication device 4 ′′.
  • the amount and the distribution of the lubricant 5 to be applied by the basic lubrication device 4 ′ is constant - at least during one puncture.
  • the amount and / or the distribution of that from the additional lubrication device 4 "Lubricant 5 to be applied is adjustable.
  • the metal strip 1 has a temperature profile behind the roll stand 2 over the metal strip width b.
  • a temperature profile detection device 6 is therefore arranged downstream of the roll stand 2.
  • the temperature profile detection device 6 is designed, for example, as an infrared camera.
  • the temperature profile of the metal strip 1 behind the roll stand 2 is recorded cyclically over the metal strip width b by means of the temperature profile detection device 6.
  • the lubrication curve is then determined from the temperature curve or inferred about possible stability problems in the roll gap.
  • the tem- Temperature course detection device 6 thus serves as a lubrication course detection device 6.
  • the temperature profile detection device 6 can be designed in various ways. Instead of an infrared camera, for example, a CCD camera or a sensor array can also be used. In any case, however, the temperature profile detection device 6 should be arranged as close as possible to the roll stand 2. The distance should be a maximum of 5 m to 10 m.
  • the lubrication course detection device 6 is connected to a controller 7.
  • the controller 7 is in turn connected to the lubrication device 4 and / or the roll stand 2 for control purposes. Based on the detected temperature or lubrication curve, the controller 7 can thus adjust the amount and / or the distribution of the lubricant 5 and / or at least one rolling parameter, eg. B. the rolling speed v, make.
  • the lubrication course detection device 6 is also connected to a rolling schedule computer 8 via the controller 7.
  • the rolling plan computer 8 is superior to the controller 7.
  • An adaptive rolling model is implemented in it.
  • the adjustment of the amount and / or the distribution of the lubricant 5 and / or at least one rolling parameter, e.g. B. the rolling speed v, are also transmitted to the rolling schedule computer 8.
  • the rolling plan computer 8 is thereby able to adapt the rolling model implemented in it, so that better presettings can be made for a new metal strip 1 to be rolled.
  • the lubrication course detection device 6 is also connected to an output device 9.
  • the output device 9 is, for example, a monitor via which information about the lubrication process is output to an operator 10 for the roll stand 2.
  • FIG. 2 shows three different temperature profiles A, B, C that are standardized to the minimum temperature across the metal bandwidth b. Furthermore, a line is drawn in broken lines, which corresponds to a temperature which is above the minimum temperature by a predetermined percentage. The percentage is typically between 5% and 10%.
  • the additional lubrication device 4 is activated locally, in particular to increase the amount of lubricant 5 to be applied in this area.
  • FIG. 3 essentially corresponds to FIG. 1. It can be seen particularly clearly from FIG. 3 that the lubricant 5 is applied to the metal strip 1 both from above and from below. In contrast to the exemplary embodiment according to FIG. 1, there is no controller 7. The setting of the amount and / or the distribution of the lubricant and / or the at least one rolling parameter is therefore carried out by the operator 10 according to FIG. 3. Controlled lubrication in the roll gap can be achieved for the first time with the rolling method according to the invention or the corresponding rolling arrangement. This leads to a higher stability, an optimized quantity and distribution of lubricant, a planer metal strip 1 and a reduced slipping.
  • the rolling process can be used in all rolling processes. However, it is used particularly advantageously when the metal strip 1 is cold rolled, that is to say the rolling arrangement is designed as a cold rolling arrangement.

Abstract

The invention relates to a rolling process for a metal strip (1) having width (b), wherein the metal strip (1) is rolled in at least one rolling stand (2), wherein an amount of lubricant is applied and spread on the width (b) of the metal strip (1), wherein the lubrication process on the width (b) of the metal strip is detected behind the rolling stand (2) and used for regulating the amount and/or distribution of the lubricant (5) and/or at least one rolling parameter (v).

Description

Walzverfahren für ein Metallband und hiermit korrespondierende WalzanordnungRolling process for a metal strip and the corresponding rolling arrangement
Die vorliegende Erfindung betrifft ein Walzverfahren für ein Metallband mit einer Metallbandbreite, wobei das Metallband in mindestens einem Walzgerüst gewalzt wird, wobei auf das Metallband über die Metallbandbreite verteilt eine Menge an Schmiermittel aufgebracht wird, sowie eine hiermit korrespondierende Walzanordnung. Derartige Walzverfahren und Walzanordnungen sind allgemein bekannt.The present invention relates to a rolling method for a metal strip with a metal strip width, the metal strip being rolled in at least one roll stand, an amount of lubricant being applied to the metal strip distributed over the metal strip width, and to a corresponding roller arrangement. Such rolling processes and arrangements are generally known.
Walzverfahren sind inzwischen hoch entwickelt. Um plane Walzbänder zu erzeugen, werden beispielsweise Stützwalzen eingesetzt, die Arbeitswalzen rückgebogen, Zwischenwalzen verschoben, segmentweise gekühlt usw. Trotz all dieser Maßnahmen ist das erzeugte Band dennoch nicht völlig plan. Darüber hinaus kommt es während des Walzens manchmal zu Stabilitätsproblemen beim Bandlauf, zu Stabilitätsproblemen im Walzspalt und/oder zu Rutscherscheinungen, die im Extremfall sogar zu einem Bandriß führen können.Rolling processes are now highly developed. In order to produce flat rolled strips, support rollers are used, for example, the work rolls are bent back, intermediate rolls are shifted, segment-wise cooled, etc. Despite all these measures, the strip produced is nevertheless not completely flat. In addition, stability problems sometimes occur during strip travel, stability problems in the roll gap and / or slipping phenomena during rolling, which in extreme cases can even lead to a strip break.
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Walzverfahren und eine hiermit korrespondierende Walzanordnung zur Verfügung zu stellen, mittels derer noch zuverlässiger noch planere Bänder herstellbar sind.The object of the present invention is to provide a rolling method and a corresponding roller arrangement, by means of which even more even, more even strips can be produced.
Die Aufgabe wird für das Walzverfahren dadurch gelöst, daß hinter dem Walzgerüst über die Metallbandbreite ein Schmierungsverlauf ermittelt und zur Einstellung der Menge und/oder der Verteilung des Schmiermittels und/oder mindestens eines Walzparameters herangezogen wird.The object is achieved for the rolling process in that a lubrication curve is determined behind the roll stand over the metal strip width and used to adjust the amount and / or the distribution of the lubricant and / or at least one rolling parameter.
Hiermit korrespondierend ist bei der Walzanordnung dem Walzgerüst eine Schmierungsverlauferfassungseinrichtung zum Ermitteln eines Schmierungsverlaufs über die Metallbandbreite nachgeordnet. Die Ermittlung des Schmierungsveriaufs kann direkt oder indirekt erfolgen.Corresponding to this, a lubrication profile detection device for determining a lubrication profile over the metal strip width is arranged downstream of the roll stand in the rolling arrangement. The lubrication distribution can be determined directly or indirectly.
Z. B. weist das Metallband hinter dem Walzgerüst über die Metallbandbreite einen Temperaturverlauf auf. Dieser Temperaturverlauf kann - beispielsweise mittels einer Infrarot- oder CCD-Kamera - erfaßt werden und aus dem Tempe- raturveriauf dann (indirekt) der Schmierungsverlauf ermittelt werden.For example, the metal strip behind the roll stand has a temperature profile over the metal strip width. This temperature profile can be recorded - for example by means of an infrared or CCD camera - and the lubrication profile can then (indirectly) be determined from the temperature profile.
Direkt kann der Schmierungsverlauf z. B. aufgrund einer Oberflächenbeschaffenheit des Metallbandes hinter dem Walzgerüst ermittelt werden. Die Oberflächenbeschaffenheit des Metallbandes kann beispielsweise optisch auf einer oder auf beiden Bandseiten erfaßt werden.The lubrication process can directly. B. can be determined based on a surface texture of the metal strip behind the roll stand. The surface quality of the metal strip can, for example, be optically recorded on one or both sides of the strip.
Es ist möglich, daß eine Information über den Schmierungsverlauf an eine Bedienungsperson für das Walzgerüst ausgegeben wird und daß die Bedienungsperson die Einstellung der Menge und/oder der Verteilung des Schmiermittels und/oder des mindestens einen Walzparameters vornimmt.It is possible for information about the lubrication process to be output to an operator for the roll stand and for the operator to adjust the amount and / or the distribution of the lubricant and / or the at least one rolling parameter.
Das Walzverfahren arbeitet jedoch komfortabler, wenn die Information über den Schmierungsverlauf an einen Regler ausgegeben wird und der Regler die Einstellung der Menge und/oder der Verteilung des Schmiermittels und/oder des mindestens einen Walzparameters vornimmt.However, the rolling process works more comfortably if the information about the lubrication process is output to a controller and the controller adjusts the amount and / or the distribution of the lubricant and / or the at least one rolling parameter.
Wenn aufgrund des ermittelten Schmierungsverlaufs festgestellt wird, daß die Schmierung nur lokal mangelhaft ist, wird vorzugsweise auch nur lokal auf die Schmierungsverhältnisse Einfluß genommen. Dies geschieht in der Regel dadurch, daß die Mängel und/oder die Verteilung des Schmiermittels verändert wird. Zeigen sich hingegen systematische Schmierungsmängel, z. B. Mangelschmiererscheinungen an beiden Bandenden quer über die Metallbandbreite, kann z. B. auf die Walzenrückbiegung der Arbeitswalze Einfluß genommen werden. Es sind selbstverständlich aber auch andere Walzparameter beeinflußbar. Die Veränderung der Menge und der Verteilung des Schmiermittels kann z. B. derart erfolgen, daß die Schmiervorrichtung eine Grundschmiervorrichtung und eine Zusatzschmiervorrichtung aufweist und die Menge und die Verteilung des von der Grundschmiervorrichtung aufzubringenden Schmiermittels konstant und die Menge und/oder die Verteilung des von der Zusatzschmiervorrichtung aufzubringenden Schmiermittels einstellbar ist.If it is determined on the basis of the determined course of lubrication that the lubrication is only locally defective, the lubrication conditions are preferably only influenced locally. This is usually done by changing the deficiencies and / or the distribution of the lubricant. On the other hand, systematic lack of lubrication, e.g. B. Lack of lubrication at both ends of the tape across the metal bandwidth, z. B. influence on the roll bending of the work roll. Of course, other rolling parameters can also be influenced. The change in the amount and distribution of the lubricant can e.g. B. done such that the lubricating device has a basic lubrication device and an additional lubrication device and the amount and distribution of the lubricant to be applied by the basic lubrication device is constant and the amount and / or the distribution of the lubricant to be applied by the additional lubrication device is adjustable.
Es ist aber auch möglich, nur die Grundschmiervorrichtung vorzusehen und die Menge und die Verteilung des von der Grundschmiervorrichtung aufzubringenden Schmiermittels einzustellen.However, it is also possible to provide only the basic lubrication device and to adjust the amount and distribution of the lubricant to be applied by the basic lubrication device.
Wenn die Einstellung der Menge und/oder der Verteilung des Schmiermittels und/oder des mindestens einen Walzparameters an einen dem Regler übergeordneten Walzplanrechner übermittelt wird und in dem Walzplanrechner ein adaptives Walzmodell implementiert ist, lernt der Walzplanrechner nach und nach, welche Schmiermittelmengen und Verteilungen für bestimmte Metallbänder bzw. Stichpläne benötigt werden.If the setting of the quantity and / or the distribution of the lubricant and / or the at least one rolling parameter is transmitted to a rolling plan computer superior to the controller and an adaptive rolling model is implemented in the rolling plan computer, the rolling plan computer gradually learns which lubricant quantities and distributions for certain Metal straps or pass schedules are required.
Das Metallband kann aus verschiedenen Metallen bestehen, beispielsweise Stahl, Kupfer, Aluminium oder Messing.The metal strip can consist of various metals, for example steel, copper, aluminum or brass.
Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Dabei zeigen in PrinzipdarstellungFurther advantages and details emerge from the following description of an exemplary embodiment. Show in principle
Figur 1 eine Walzanordnung von oben,1 shows a rolling arrangement from above,
Figur 2 einen Temperaturverlauf undFigure 2 shows a temperature profile and
Figur 3 eine Walzanordnung von der Seite.Figure 3 shows a rolling arrangement from the side.
Gemäß Figur 1 wird mit einer Walzgeschwindigkeit v ein Metallband 1 in einem Walzgerüst 2 mit Arbeitswalzen 3 gewalzt. Das Walzgerüst 2 ist gemäß Figur 1 als Zweirollen-Walzgerüst ausgebildet. Es weist also lediglich die Arbeitswalzen 3 auf. Ebenso könnte das Walzgerüst 2 aber auch Stützwalzen, gegebenenfalls auch Zwischenwalzen, Verschiebesysteme in einer oder mehreren der Walzebenen usw. aufweisen oder z. B. als sogenanntes Zwanzigrollen-Walzgerüst ausgebildet sein. Das Metallband 1 weist eine Metallbandbreite b auf. Gemäß Ausführungsbeispiel besteht das Metallband 1 aus Stahl. Es könnte aber auch aus einem anderen Metall, z. B. Kupfer, Aluminium oder Messing bestehen.According to FIG. 1, a metal strip 1 is rolled in a roll stand 2 with work rolls 3 at a rolling speed v. The roll stand 2 is according to FIG. 1 designed as a two-roll mill stand. So it only has the work rolls 3. Likewise, the roll stand 2 could also have backup rolls, possibly also intermediate rolls, shifting systems in one or more of the roll planes, etc. or z. B. be designed as a so-called twenty-roll mill stand. The metal strip 1 has a metal strip width b. According to the exemplary embodiment, the metal strip 1 consists of steel. But it could also be made of another metal, e.g. B. copper, aluminum or brass.
Dem Walzgerüst 2 ist eine Schmiervorrichtung 4 zugeordnet. Gemäß Figur 1 ist sie vor dem Walzgerüst 2 angeordnet. Mittels der Schmiervorrichtung 4 wird eine Menge an Schmiermittel 5 (z. B. ein Öl-Wasser-Gemisch) über die Metallbandbreite b verteilt von oben und unten auf das Metallband 1 aufgebracht. Die Schmiervorrichtung 4 weist eine Grundschmiervorrichtung 4' und eine Zusatzschmiervorrichtung 4" auf. Die Menge und die Verteilung des von der Grundschmiervorrichtung 4' aufzubringenden Schmiermittels 5 ist - zumindest während eines Stiches - konstant. Die Menge und/oder die Verteilung des von der Zusatzschmiervorrichtung 4" aufzubringenden Schmiermittels 5 hingegen ist einstellbar.A lubrication device 4 is assigned to the roll stand 2. According to Figure 1, it is arranged in front of the roll stand 2. By means of the lubrication device 4, an amount of lubricant 5 (for example an oil-water mixture) is applied to the metal strip 1 from above and below over the metal strip width b. The lubrication device 4 has a basic lubrication device 4 ′ and an additional lubrication device 4 ″. The amount and the distribution of the lubricant 5 to be applied by the basic lubrication device 4 ′ is constant - at least during one puncture. The amount and / or the distribution of that from the additional lubrication device 4 "Lubricant 5 to be applied, however, is adjustable.
Es ist auch möglich, für jede Bandseite nur einen einzigen Schmierbalken 4' vorzusehen, bei dem Menge und/oder die Verteilung des aufzubringenden Schmiermittels 5 einstellbar ist.It is also possible to provide only a single lubrication bar 4 ′ for each band side, in which the quantity and / or the distribution of the lubricant 5 to be applied can be set.
Das Metallband 1 weist hinter dem Walzgerüst 2 über die Metallbandbreite b einen Temperaturverlauf auf. Dem Walzgerüst 2 ist daher eine Temperaturver- lauferfassungseinrichtung 6 nachgeordnet. Die Temperaturverlauferfassungs- einrichtung 6 ist beispielsweise als Infrarotkamera ausgebildet. Mittels der Temperaturverlauferfassungseinrichtung 6 wird der Temperaturverlauf des Metallbandes 1 hinter dem Walzgerüst 2 über die Metallbandbreite b zyklisch erfaßt. Aus dem Temperaturverlauf wird dann der Schmierungsverlauf ermittelt bzw. auf mögliche Stabilitätsprobleme im Walzspalt rückgeschlossen. Die Tem- peraturverlauferfassungseinrichtung 6 dient also als Schmierverlauferfassungs- einrichtung 6.The metal strip 1 has a temperature profile behind the roll stand 2 over the metal strip width b. A temperature profile detection device 6 is therefore arranged downstream of the roll stand 2. The temperature profile detection device 6 is designed, for example, as an infrared camera. The temperature profile of the metal strip 1 behind the roll stand 2 is recorded cyclically over the metal strip width b by means of the temperature profile detection device 6. The lubrication curve is then determined from the temperature curve or inferred about possible stability problems in the roll gap. The tem- Temperature course detection device 6 thus serves as a lubrication course detection device 6.
Die Temperaturverlauferfassungseinrichtung 6 kann auf verschiedene Art ausgebildet sein. Statt einer Infrarotkamera kommt beispielsweise auch eine CCD- Kamera oder ein Sensorarray in Frage. In jedem Fall aber sollte die Tempera- turverlauferfassungseinrichtung 6 möglichst nahe am Walzgerüst 2 angeordnet sein. Der Abstand sollte maximal 5 m bis 10 m betragen.The temperature profile detection device 6 can be designed in various ways. Instead of an infrared camera, for example, a CCD camera or a sensor array can also be used. In any case, however, the temperature profile detection device 6 should be arranged as close as possible to the roll stand 2. The distance should be a maximum of 5 m to 10 m.
Gemäß Figur 1 ist die Schmierverlauferfassungseinrichtung 6 mit einem Regler 7 verbunden. Der Regler 7 wiederum ist mit der Schmiervorrichtung 4 und/oder dem Walzgerüst 2 regeltechnisch verbunden. Aufgrund des erfaßten Temperatur- bzw. Schmierungsverlaufs kann somit der Regler 7 die Einstellung der Menge und/oder der Verteilung des Schmiermittels 5 und/oder mindestens eines Walzparameters, z. B. der Walzgeschwindigkeit v, vornehmen.According to FIG. 1, the lubrication course detection device 6 is connected to a controller 7. The controller 7 is in turn connected to the lubrication device 4 and / or the roll stand 2 for control purposes. Based on the detected temperature or lubrication curve, the controller 7 can thus adjust the amount and / or the distribution of the lubricant 5 and / or at least one rolling parameter, eg. B. the rolling speed v, make.
Die Schmierverlauferfassungseinrichtung 6 ist ferner über den Regler 7 mit einem Walzplanrechner 8 verbunden. Der Walzplanrechner 8 ist dem Regler 7 übergeordnet. In ihm ist ein adaptives Walzmodell implementiert. Somit kann die Einstellung der Menge und/oder der Verteilung des Schmiermittels 5 und/oder mindestens eines Walzparameters, z. B. der Walzgeschwindigkeit v, auch an den Walzplanrechner 8 übermittelt werden. Der Walzplanrechner 8 ist dadurch in der Lage, das in ihm implementierte Walzmodell anzupassen, so daß bei einem neu zu walzenden Metallband 1 bessere Voreinstellungen vorgenommen werden können.The lubrication course detection device 6 is also connected to a rolling schedule computer 8 via the controller 7. The rolling plan computer 8 is superior to the controller 7. An adaptive rolling model is implemented in it. Thus, the adjustment of the amount and / or the distribution of the lubricant 5 and / or at least one rolling parameter, e.g. B. the rolling speed v, are also transmitted to the rolling schedule computer 8. The rolling plan computer 8 is thereby able to adapt the rolling model implemented in it, so that better presettings can be made for a new metal strip 1 to be rolled.
Gemäß Figur 1 ist die Schmierungsverlauferfassungseinrichtung 6 auch mit einer Ausgabeeinrichtung 9 verbunden. Die Ausgabeeinrichtung 9 ist beispielsweise ein Monitor, über den eine Information über den Schmierungsverlauf an eine Bedienungsperson 10 für das Walzgerüst 2 ausgegeben wird. In Figur 2 sind drei verschiedene, auf die minimale Temperatur quer über die Metallbandbreite b normierte Temperaturverläufe A, B, C dargestellt. Ferner ist gestrichelt eine Linie eingezeichnet, welcher einer Temperatur entspricht, welche um einen vorbestimmten Prozentsatz über der minimalen Temperatur liegt. Der Prozentsatz liegt typisch zwischen 5 % und 10 %.According to FIG. 1, the lubrication course detection device 6 is also connected to an output device 9. The output device 9 is, for example, a monitor via which information about the lubrication process is output to an operator 10 for the roll stand 2. FIG. 2 shows three different temperature profiles A, B, C that are standardized to the minimum temperature across the metal bandwidth b. Furthermore, a line is drawn in broken lines, which corresponds to a temperature which is above the minimum temperature by a predetermined percentage. The percentage is typically between 5% and 10%.
Beim Temperaturverlauf A übersteigt dieser über die Metallbandbreite b an keiner Stelle die gestrichelte Linie. Das Metallband 1 wird somit über die Metallbandbreite b an jeder Stelle hinreichend geschmiert. Regeltechnische Eingriffe sind nicht erforderlich.In the case of temperature curve A, this does not exceed the dashed line at any point over the metal bandwidth b. The metal strip 1 is thus adequately lubricated over the metal strip width b at every point. Control intervention is not necessary.
Beim Temperaturverlauf B wird an einer Stelle die gestrichelte Linie überschritten. An dieser Stelle liegt eine Mangelschmierung vor. Zum Beheben dieser Mangelschmierung wird lokal die Zusatzschmiervorrichtung 4" angesteuert, um insbesondere die Menge des in diesem Bereich aufzubringenden Schmiermittels 5 zu erhöhen.At temperature point B, the dashed line is exceeded at one point. There is insufficient lubrication at this point. To remedy this lack of lubrication, the additional lubrication device 4 "is activated locally, in particular to increase the amount of lubricant 5 to be applied in this area.
Beim Temperaturverlauf C liegt ein systematischer Walzfehler vor, da das Metallband 1 an seinen beiden Außenkanten mangelhaft geschmiert ist. In diesem Fall kann - selbstverständlich unter Berücksichtigung der Bandplanheit - ein Walzparameter verändert werden, z. B. die Walzenrückbiegung bei einem Mehrwalzen-Walzgerüst. Eine Ansteuerung der Zusatzschmiervorrichtung 4" ist aber ebenfalls möglich.There is a systematic rolling error in the temperature profile C, since the metal strip 1 is poorly lubricated on its two outer edges. In this case - of course taking into account the strip flatness - a rolling parameter can be changed, e.g. B. the roll back bend in a multi-roll stand. A control of the additional lubrication device 4 "is also possible.
Figur 3 entspricht im wesentlichen Figur 1. Besonders deutlich ist aus Figur 3 ersichtlich, daß das Schmiermittel 5 sowohl von oben als auch von unten auf das Metallband 1 aufgebracht wird. Im Unterschied zu dem Ausführungsbeispiel gemäß Figur 1 ist aber kein Regler 7 vorhanden. Die Einstellung der Menge und/oder der Verteilung des Schmiermittels und/oder des mindestens einen Walzparameters wird daher gemäß Figur 3 von der Bedienperson 10 vorgenommen. Mit dem erfindungsgemäßen Walzverfahrens bzw. der hiermit korrespondierenden Walzanordnung ist erstmals eine kontrollierte Schmierung im Walzspalt erreichbar. Dies führt zu einer höheren Stabilität, einer optimierten Schmiermittelmenge und -Verteilung, einem planeren Metallband 1 und einem verringerten Rutschen.FIG. 3 essentially corresponds to FIG. 1. It can be seen particularly clearly from FIG. 3 that the lubricant 5 is applied to the metal strip 1 both from above and from below. In contrast to the exemplary embodiment according to FIG. 1, there is no controller 7. The setting of the amount and / or the distribution of the lubricant and / or the at least one rolling parameter is therefore carried out by the operator 10 according to FIG. 3. Controlled lubrication in the roll gap can be achieved for the first time with the rolling method according to the invention or the corresponding rolling arrangement. This leads to a higher stability, an optimized quantity and distribution of lubricant, a planer metal strip 1 and a reduced slipping.
Das Walzverfahren kann bei allen Walzvorgängen angewendet werden. Besonders vorteilhaft wird es aber angewendet, wenn das Metallband 1 kaltgewalzt wird, die Walzanordnung also als Kaltwalzanordnung ausgebildet ist. The rolling process can be used in all rolling processes. However, it is used particularly advantageously when the metal strip 1 is cold rolled, that is to say the rolling arrangement is designed as a cold rolling arrangement.
BezugszeichenlisteReference list
1 Metallband1 metal band
2 Walzgerüst2 roll stand
3 Arbeitswalzen3 work rolls
4, 4', 4" Schmiervorrichtungen4, 4 ', 4 "lubrication devices
5 Schmiermittel5 lubricants
6 Temperaturverlauferfassungseinrichtung6 temperature profile detection device
7 Regler7 controllers
8 Walzplanrechner8 rolling plan calculator
9 Ausgabeeinrichtung/Monitor9 Output device / monitor
10 Bedienungsperson10 operators
A, B, C Temperaturverläufe b MetallbandbreiteA, B, C temperature curves b metal bandwidth
V Walzgeschwindigkeit/Walzparameter V Rolling speed / rolling parameters

Claims

Patentansprüche claims
1. Walzverfahren für ein Metallband (1) mit einer Metallbandbreite (b), wobei das Metallband (1) in mindestens einem Walzgerüst (2) gewalzt wird, wobei auf das Metallband (1) über die Metallbandbreite (b) verteilt eine Menge an Schmiermittel (5) aufgebracht wird, d a d u r c h g e k e n n z e i c h n e t , daß hinter dem Walzgerüst (2) über die Metallbandbreite (b) ein Schmierungsverlauf ermittelt und zur Einstellung der Menge und/oder der Verteilung des Schmiermittels (5) und/oder mindestens eines Walzparameters (v) herangezogen wird.1. Rolling process for a metal strip (1) with a metal strip width (b), the metal strip (1) being rolled in at least one roll stand (2), with a quantity of lubricant being distributed over the metal strip (1) over the metal strip width (b) (5) is applied, characterized in that a lubrication curve is determined behind the roll stand (2) over the metal band width (b) and used to adjust the amount and / or the distribution of the lubricant (5) and / or at least one rolling parameter (v) .
2. Walzverfahren nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) hinter dem Walzgerüst (2) über die Metallbandbreite (b) einen Temperaturverlauf (A - C) aufweist und daß der Schmierungsverlauf aus dem Temperaturverlauf ermittelt wird.2. Rolling method according to claim 1, that the metal strip (1) behind the roll stand (2) has a temperature profile (A - C) over the metal strip width (b) and that the lubrication profile is determined from the temperature profile.
3. Walzverfahren nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) hinter dem Walzgerüst (2) über die Metallbandbreite (b) eine Oberflächenbeschaffenheit aufweist und daß der Schmierungsverlauf aus der Oberflächenbeschaffenheit ermittelt wird.3. Rolling method according to claim 1, so that the metal strip (1) behind the roll stand (2) has a surface texture over the metal strip width (b) and that the lubrication profile is determined from the surface texture.
4. Walzverfahren nach Anspruch 1 , 2 oder 3, d a d u r c h g e k e n n z e i c h n e t , daß eine Information über den Schmierungsverlauf an eine Bedienungsperson (10) für das Walzgerüst (2) ausgegeben wird und daß die Bedienungsperson (10) die Einstellung der Menge und/oder der Verteilung des Schmiermittels (5) und/oder des mindestens einen Walzparameters (v) vornimmt.4. Rolling method according to claim 1, 2 or 3, characterized in that information about the course of lubrication to an operator (10) for the rolling stand (2) is output and that the operator (10) adjusting the amount and / or the distribution of Lubricant (5) and / or the at least one rolling parameter (v).
5. Walzverfahren nach Anspruch 1 , 2 oder 3, d a d u r c h g e k e n n z e i c h n e t , daß eine Information über den Schmierungsverlauf an einen Regler (7) ausgegeben wird und daß der Regler (7) die Einstellung der Menge und/oder der Verteilung des Schmiermittels (5) und/oder des mindestens einen Walzparameters (v) vornimmt.5. Rolling method according to claim 1, 2 or 3, characterized in that information about the lubrication profile is output to a controller (7) and that the controller (7) the setting of the amount and / or the distribution of the lubricant (5) and / or the at least one rolling parameter (v).
6. Walzverfahren nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , daß die Einstellung der Menge und/oder der Verteilung des Schmiermittels (5) und/oder des mindestens einen Walzparameters (v) an einen dem Regler (7) übergeordneten Walzplanrechner (8) übermittelt wird und daß in dem Walzplanrechner (8) ein adaptives Walzmodell implementiert ist.6. Rolling method according to claim 5, characterized in that the setting of the amount and / or the distribution of the lubricant (5) and / or the at least one rolling parameter (v) is transmitted to a rolling plan computer (8) superordinate to the controller (7) and that an adaptive rolling model is implemented in the rolling plan computer (8).
7. Walzverfahren nach einem der obigen Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) kalt gewalzt wird.7. Rolling method according to one of the above claims, that the metal strip (1) is cold rolled.
8. Walzverfahren nach einem der obigen Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) aus Stahl, Kupfer, Aluminium oder Messing ist.8. Rolling process according to one of the above claims, that the metal strip (1) is made of steel, copper, aluminum or brass.
9. Walzanordnung mit mindestens einem Walzgerüst (2) zum Walzen eines Metallbandes (1) mit einer Metallbandbreite (b) und einer dem Walzgerüst (2) zugeordneten Schmiervorrichtung (4) zum über die Metallbandbreite (b) verteilten Aufbringen einer Menge an Schmiermittel (5) auf das Metallband (1), d a d u r c h g e k e n n z e i c h n e t , daß dem Walzgerüst (2) eine Schmierungsverlauferfassungseinrichtung (6) zum Ermitteln eines Schmierungsverlaufs über die Metallbandbreite (b) nachgeordnet ist.9. Rolling arrangement with at least one roll stand (2) for rolling a metal strip (1) with a metal strip width (b) and a lubricating device (4) assigned to the roll stand (2) for applying a quantity of lubricant (5) distributed over the metal strip width (b) ) on the metal strip (1), characterized in that that the rolling stand (2) is followed by a lubrication course detection device (6) for determining a lubrication course across the metal strip width (b).
10. Walzanordnung nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) hinter dem Walzgerüst (2) über die Metallbandbreite (b) einen Temperaturverlauf (A - C) aufweist und daß die Schmie- rungsverlauferfassungseinrichtung (6) als Temperaturverlauf erfassungs- einrichtung (6) ausgebildet ist.10. Roll arrangement according to claim 9, characterized in that the metal strip (1) behind the roll stand (2) over the metal strip width (b) has a temperature profile (A - C) and that the lubrication profile detection device (6) as a temperature profile detection device ( 6) is formed.
11. Walzanordnung nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) hinter dem Walzgerüst (2) über die Metallbandbreite (b) eine Oberflächenbeschaffenheit aufweist und daß die Schmie- rungsverlauferfassungseinrichtung (6) als Oberflächenbeschaffenheitser- fassungseinrichtung ausgebildet ist.11. Rolling arrangement according to claim 9, so that the metal strip (1) behind the roll stand (2) has a surface texture over the metal strip width (b) and that the lubrication course detection device (6) is designed as a surface texture detection device.
12. Walzanordnung nach Anspruch 9, 10 oder 11 , d a d u r c h g e k e n n z e i c h n e t , daß die Menge und/oder die Verteilung des von der Schmiervorrichtung (4) aufzubringenden Schmiermittels (5) einstellbar ist.12. Rolling arrangement according to claim 9, 10 or 11, so that the quantity and / or the distribution of the lubricant (5) to be applied by the lubricating device (4) is adjustable.
13. Walzanordnung nach Anspruch 12, d a d u r c h g e k e n n z e i c h n e t , daß die Schmiervorrichtung (4) eine Grundschmiervorrichtung (4') und eine Zusatzschmiervorrichtung (4") aufweist und daß die Menge und die Verteilung des von der Grundschmiervorrichtung (4') aufzubringenden Schmiermittels (5) während eines Stiches konstant und die Menge und/oder die Verteilung des von der Zusatzschmiervorrichtung (4") aufzubringenden Schmiermittels (5) einstellbar ist. 13. Rolling arrangement according to claim 12, characterized in that the lubricating device (4) has a basic lubricating device (4 ') and an additional lubricating device (4 ") and that the amount and distribution of the lubricant to be applied by the basic lubricating device (4') (5) during of a stitch is constant and the amount and / or the distribution of the lubricant (5) to be applied by the additional lubrication device (4 ") is adjustable.
14. Walzanordnung nach einem der Ansprüche 9 bis 13, d a d u r c h g e k e n n z e i c h n e t , daß die Schmierungsverlauferfassungseinrichtung (6) mit einer Ausgabeeinrichtung (9) zum Ausgeben einer Information über den ermittelten Schmierungsverlauf an eine Bedienungsperson (10) für das Walzgerüst (2) verbunden ist.14. Roll arrangement according to one of claims 9 to 13, so that the lubrication course detection device (6) is connected to an output device (9) for outputting information about the determined lubrication course to an operator (10) for the roll stand (2).
15. Walzanordnung nach einem der Ansprüche 9 bis 14, d a d u r c h g e k e n n z e i c h n e t , daß die Schmierungsverlauferfassungseinrichtung (6) mit einem Regler (7) verbunden ist, der mit der Schmiervorrichtung (4) und/oder dem Walzgerüst (2) regeltechnisch verbunden ist.15. Rolling arrangement according to one of claims 9 to 14, so that the lubrication course detection device (6) is connected to a controller (7) which is connected to the lubrication device (4) and / or the roll stand (2) in terms of control technology.
16. Walzanordnung nach Anspruch 15, d a d u r c h g e k e n n z e i c h n e t , daß die Schmierungsverlauferfassungseinrichtung (6) mit einem dem Regler (7) übergeordneten Walzplanrechner (8) verbunden ist, und daß in dem Walzplanrechner (8) ein adaptives Walzmodell implementiert ist.16. Rolling arrangement according to claim 15, so that the lubrication course detection device (6) is connected to a rolling plan computer (8) superordinate to the controller (7) and that an adaptive rolling model is implemented in the rolling plan computer (8).
17. Walzanordnung nach einem der Ansprüche 9 bis 16, d a d u r c h g e k e n n z e i c h n e t , daß sie als Kaltwalzanordnung ausgebildet ist.17. Rolling arrangement according to one of claims 9 to 16, d a d u r c h g e k e n n z e i c h n e t that it is designed as a cold rolling arrangement.
18. Walzanordnung nach einem der Ansprüche 9 bis 17, d a d u r c h g e k e n n z e i c h n e t , daß das Metallband (1) aus Stahl, Kupfer, Aluminium oder Messing ist. 18. Rolling arrangement according to one of claims 9 to 17, d a d u r c h g e k e n n z e i c h n e t that the metal strip (1) made of steel, copper, aluminum or brass.
EP00920691A 1999-04-26 2000-04-12 Rolling process for a metal strip and corresponding rolling device Expired - Lifetime EP1173295B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19918880A DE19918880A1 (en) 1999-04-26 1999-04-26 Rolling process for a metal strip and the corresponding rolling arrangement
DE19918880 1999-04-26
PCT/EP2000/003265 WO2000064605A1 (en) 1999-04-26 2000-04-12 Rolling process for a metal strip and corresponding rolling device

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EP1173295B1 EP1173295B1 (en) 2004-06-02

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JP4912529B2 (en) 2012-04-11
CN1251817C (en) 2006-04-19

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