EP1899086B1 - Method and apparatus for manufacturing a metal strip - Google Patents
Method and apparatus for manufacturing a metal strip Download PDFInfo
- Publication number
- EP1899086B1 EP1899086B1 EP06753734A EP06753734A EP1899086B1 EP 1899086 B1 EP1899086 B1 EP 1899086B1 EP 06753734 A EP06753734 A EP 06753734A EP 06753734 A EP06753734 A EP 06753734A EP 1899086 B1 EP1899086 B1 EP 1899086B1
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- EP
- European Patent Office
- Prior art keywords
- metal strip
- strip
- cameras
- rollers
- tensile stresses
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
Definitions
- the invention relates to a method for producing a metal strip in which the metal strip is guided over a number of rollers under such a belt tension and moved in a conveying direction that it is largely flat at least between two rollers, wherein in the tensile metal under tension substantially flat metal band between the at least two rollers, the inner tensile stresses acting in the metal strip are made visually visible and the determined tensile stresses or tensile stress differences are utilized in the production of the metal strip. Furthermore, the invention relates to a device for producing a metal strip.
- the metal strip is frequently subjected to a flatness measurement following the rolling process, with unevenness of the strip being determined.
- flatness measuring rollers which are pressed with a predetermined biasing force against the energized and moved metal strip. By measuring the removal of the flatness measuring roll as a result of unevenness in the strip from the metal strip, it is possible to deduce the present irregularities in the metal strip. Also known are systems that visualize the voltage differences via vibrations.
- Unevenness in the metal strip can be determined not only by means of contacting rollers, but also contactless.
- the disclosed JP 2000046752 A an optical system having a lighting device for the tape and cameras. This makes it possible to measure the surface of the metal strip three-dimensionally and to present the measurement result.
- the flatness of the metal strip can also be determined with a device as shown in the EP 1 418 400 A2 is known. Flatness deviations are also determined by means of a camera (CCD camera: charge-coupled device - camera).
- CCD camera charge-coupled device - camera
- the stress distribution over the width of the metal strip can be visualized in order to be able to draw conclusions about the strip quality.
- the device should be as space-saving as possible for this determination and do not require much effort during installation and operation.
- the invention is therefore based on the object, a method and an associated device of the type mentioned in such a way that it is possible to gain even under high belt tension information that allow control of the manufacturing process in such a way that optimizes the strip quality can be.
- This object is achieved by the method according to the invention in that the metal strip is irradiated with a light source and recorded with two cameras from two different directions.
- the optically visible tensile stresses in the metal strip are measured and used in the assessment of the strip quality and possibly the control or regulation of the production process.
- unevenness of the band is detected by different states of tension in the band and insofar as the unevenness is assessed indirectly via the voltages.
- a further training provides that the strip tension exerted on the metal strip is selected as a function of the determined tensile stresses in the metal strip. In this case, preference is given to proceeding so that the strip tension exerted on the metal strip is increased as the tensile stress in the metal strip increases.
- the tensile stresses acting in the metal band which can be determined with the mentioned procedure, are preferably determined several times at short time intervals.
- the change in the tensile stresses acting in the metal strip can be determined by comparing a number of tensile stresses determined at a time interval. By means of a multiplicity of successive ones Images within a short time can thus also be tension pictures for fast moving tapes.
- the device for producing a metal strip has a number of rollers over which the metal strip is guided under such a belt tension and moved in a conveying direction that it is largely flat at least between two rollers.
- at least one light source illuminating the metal strip is arranged between two rollers and two cameras are arranged in the region of the light source, which record the illuminated metal strip, the system consisting of light source and cameras being suitable for determining the tensile stresses acting in the metal strip wherein the two cameras are spaced apart so as to receive the metal strip from two different directions.
- the cameras are preferably of digital design.
- recording means may be present which store the image taken by the camera or the cameras at short time intervals.
- the recording means can be connected to evaluation means which are suitable for comparing the images recorded by the camera or the cameras.
- the metal strip 1 is rolled in the left portion of the figure in a rolling range of two work rolls 11 and 12, which are supported by two back-up rolls 13 and 14.
- the metal strip 1 is then conveyed in a conveying direction F at a predetermined conveying speed, wherein it is kept below a defined belt tension S.
- the belt tension S is maintained by guiding the metal belt 1 in the manner outlined, i. H. it is in particular - on the right side of the figure - guided by two rollers 4 and 5 S-shaped, so that a desired level of belt tension S between the rollers 11, 12 and the rollers 4, 5 can be maintained.
- the metal strip 1 Due to the belt tension S, the metal strip 1 has a high degree of flatness, d. H. the surface irregularities are low.
- the metal strip 1 is therefore guided largely flat.
- a light source 6 is arranged, with which the surface of the metal strip 1 can be illuminated.
- two cameras 7 and 8 are mounted in two different locations, which can take two pictures from the tape surface.
- the system consisting of the light source 6 and the cameras 7 and 8, which is suitable for carrying out the procedure according to the invention, is known, for example, under the name Q-400 as Digital 3D Correlation System from DANTEC Ettemeyer GmbH, Elchingen, Germany (www .dantec-ettemeyer.com) are known and available.
- Q-400 Digital 3D Correlation System from DANTEC Ettemeyer GmbH, Elchingen, Germany (www .dantec-ettemeyer.com) are known and available.
- the available system is well suited to visualize internal stresses in the largely flat metal strip and evaluate, even if this Bandzugschwankache should be necessary to a small extent.
- the cameras 7, 8 are connected to a recording means 9 which is capable of storing a plurality of recordings in a short time.
- the recorded images can be evaluated in a subsequent evaluation means 10, it being possible in particular to observe the distribution of the tensile stresses in the metal strip 1 and their temporal change. Depending on this, the manufacturing process for the metal strip 1 can be influenced.
- a strip tension is maintained in the metal strip 1 in the measurement of the voltages, which corresponds to at least 10% of the yield strength of the material of the metal strip.
- the use of the determined voltages or voltage differences in the metal strip 1 in the manufacture of the metal strip 1 may already consist in that the stresses are observed in the strip and only in case of need, d. H. If voltage distribution ratios in the band exceed an impermissible value, measures are taken.
- the values determined are controlled in the closed loop directly in the production process of the metal strip.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Control Of Metal Rolling (AREA)
- Advancing Webs (AREA)
- Coating With Molten Metal (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Metallbandes, bei dem das Metallband über eine Anzahl Rollen unter einer solchen Bandspannung geführt und in eine Förderrichtung bewegt wird, dass es zumindest zwischen zwei Rollen weitgehend eben ist, wobei in dem unter Zugspannung weitgehend ebenen Metallband zwischen den mindestens zwei Rollen die im Metallband wirkenden inneren Zugspannungen optisch sichtbar gemacht werden und die ermittelten Zugspannungen oder Zugspannungsdifferenzen bei der Herstellung des Metallbandes verwertet werden. Des weiteren betrifft die Erfindung eine Vorrichtung zur Herstellung eines Metallbandes.The invention relates to a method for producing a metal strip in which the metal strip is guided over a number of rollers under such a belt tension and moved in a conveying direction that it is largely flat at least between two rollers, wherein in the tensile metal under tension substantially flat metal band between the at least two rollers, the inner tensile stresses acting in the metal strip are made visually visible and the determined tensile stresses or tensile stress differences are utilized in the production of the metal strip. Furthermore, the invention relates to a device for producing a metal strip.
Beim Walzen sowie Nachwalzen von Metallbändern ist die Planheit neben der Dicke und der Sauberkeit des Bandes ein entscheidender Qualitätsfaktor. Bei der Herstellung eines Metallbandes ist es daher erforderlich, zwecks Qualitätssicherung der Produktion eine Bandinspektion vorzunehmen, wobei im gegebenen Falle aufgrund des ermittelten Inspektionsergebnisses auf den Herstellungsprozess Einfluss genommen werden muss.When rolling and re-rolling metal strips, the flatness is a decisive quality factor in addition to the thickness and cleanliness of the strip. When producing a metal strip, it is therefore necessary to carry out a strip inspection for the purpose of quality assurance of the production, in which case the manufacturing process must be influenced in the given case on the basis of the determined inspection result.
Das Metallband wird hierzu im Anschluss an den Walzvorgang häufig einer Planheitsmessung unterzogen, wobei Unebenheiten des Bandes ermittelt werden sollen. Hierfür sind Planheitsmessrollen bekannt, die mit einer vorgegebenen Vorspannkraft gegen das unter Spannung geführte und bewegte Metallband gedrückt werden. Durch Messung der Abdrückung der Planheitsmessrolle infolge von Bandunebenheiten vom Metallband kann auf die vorliegenden Unebenheiten im Metallband geschlossen werden. Bekannt sind auch Systeme, die über Schwingungen die Spannungsunterschiede visualisieren.For this purpose, the metal strip is frequently subjected to a flatness measurement following the rolling process, with unevenness of the strip being determined. For this purpose, flatness measuring rollers are known which are pressed with a predetermined biasing force against the energized and moved metal strip. By measuring the removal of the flatness measuring roll as a result of unevenness in the strip from the metal strip, it is possible to deduce the present irregularities in the metal strip. Also known are systems that visualize the voltage differences via vibrations.
Unebenheiten im Metallband können nicht nur mittels kontaktierender Rollen, sondern auch kontaktlos ermittelt werden. Hierfür offenbart beispielsweise die
Die Planheit des Metallbandes kann auch mit einer Vorrichtung ermittelt werden, wie sie aus der
Ähnliche Systeme sind aus der
In all den vorgenannten Fällen werden Unebenheiten der Bandoberfläche gemessen und hierauf gegebenenfalls durch Veränderung der Prozessparameter reagiert.In all the aforementioned cases, unevennesses of the strip surface are measured and, if appropriate, reacted by changing the process parameters.
Es hat sich herausgestellt, dass insbesondere unter entsprechendem Bandzug das Messergebnis schwierig zu interpretieren ist, da in Abhängigkeit des Bandzuges, das im Metallband wirkt, die Planheit verändert wird. D. h. aufgrund des Bandzuges, dem das Walzgut beim Walzprozess ausgesetzt ist, lassen sich Spannungsunterschiede über die Bandbreite in Form von Welligkeiten bzw. Unplanheiten nicht oder nur schwer erkennen.It has been found that the measurement result is difficult to interpret, especially under a corresponding strip tension, since the flatness is changed as a function of the strip tension which acts in the metal strip. Ie. Due to the strip tension, which is exposed to the rolling stock during the rolling process, voltage differences over the bandwidth in the form of ripples or unevenness can not or only with difficulty be recognized.
Insbesondere ist es wünschenswert, dass die Spannungsverteilung über der Breite des Metallbandes visualisiert werden kann, um Rückschlüsse auf die Bandqualität ziehen zu können. Dabei soll die Vorrichtung für diese Ermittlung möglichst platzsparend sein und keinen hohen Aufwand bei der Installation und beim Betrieb erfordern.In particular, it is desirable that the stress distribution over the width of the metal strip can be visualized in order to be able to draw conclusions about the strip quality. The device should be as space-saving as possible for this determination and do not require much effort during installation and operation.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine zugehörige Vorrichtung der eingangs genannten Art so weiterzubilden, dass es möglich ist, auch unter hoher Bandspannung die Informationen zu gewinnen, die eine Steuerung des Herstellprozesses in einer solcher Weise erlauben, dass die Bandqualität optimiert werden kann.The invention is therefore based on the object, a method and an associated device of the type mentioned in such a way that it is possible to gain even under high belt tension information that allow control of the manufacturing process in such a way that optimizes the strip quality can be.
Diese Aufgabe wird durch die Erfindung verfahrensgemäß dadurch gelöst, dass das Metallband mit einer Lichtquelle bestrahlt und mit zwei Kameras aus zwei unterschiedlichen Richtung aufgenommen wird.This object is achieved by the method according to the invention in that the metal strip is irradiated with a light source and recorded with two cameras from two different directions.
Im Unterschied zu vorbekannten Lösungen werden also die optisch sichtbaren Zugspannungen im Metallband vermessen und bei der Beurteilung der Bandqualität und ggf. der Steuerung bzw. Regelung des Herstellprozesses verwendet. Dabei werden also Unplanheiten des Bandes durch unterschiedliche Spannungszustände im Band erfasst und insoweit die Unplanheiten indirekt über die Spannungen beurteilt.In contrast to previously known solutions, therefore, the optically visible tensile stresses in the metal strip are measured and used in the assessment of the strip quality and possibly the control or regulation of the production process. Thus, unevenness of the band is detected by different states of tension in the band and insofar as the unevenness is assessed indirectly via the voltages.
Eine Fortbildung sieht vor, dass der auf das Metallband ausgeübte Bandzug in Abhängigkeit der ermittelten Zugspannungen im Metallband gewählt wird. Dabei wird bevorzugt so vorgegangen, dass bei steigender Zugspannung im Metallband der auf das Metallband ausgeübte Bandzug erhöht wird. Mittels Zuordnung einer höheren oder einer niedrigeren Einzelspannung kann also ein direkter Eingriff in den Regelkreislauf zur Planheitsbeeinflussung erfolgen.A further training provides that the strip tension exerted on the metal strip is selected as a function of the determined tensile stresses in the metal strip. In this case, preference is given to proceeding so that the strip tension exerted on the metal strip is increased as the tensile stress in the metal strip increases. By assigning a higher or a lower individual voltage can thus be a direct intervention in the control circuit for planarity control.
Die im Metallband wirkenden Zugspannungen, die mit dem genannten Vorgehen ermittelt werden können, werden bevorzugt mehrfach in kurzen zeitlichen Abständen ermittelt. Die Veränderung der im Metallband wirkenden Zugspannungen können durch den Vergleich einer Anzahl von in zeitlichem Abstand ermittelten Zugspannungen festgestellt werden. Mittels einer Vielzahl aufeinander folgender Bilder innerhalb kurzer Zeit lassen sich also Spannungsbilder auch für schnell bewegte Bänder darstellen.The tensile stresses acting in the metal band, which can be determined with the mentioned procedure, are preferably determined several times at short time intervals. The change in the tensile stresses acting in the metal strip can be determined by comparing a number of tensile stresses determined at a time interval. By means of a multiplicity of successive ones Images within a short time can thus also be tension pictures for fast moving tapes.
Die Vorrichtung zur Herstellung eines Metallbandes hat eine Anzahl Rollen, über die das Metallband unter einer solchen Bandspannung geführt und in eine Förderrichtung bewegt wird, dass es zumindest zwischen zwei Rollen weitgehend eben ist. Erfindungsgemäß ist vorgesehen, dass zwischen zwei Rollen mindestens eine das Metallband beleuchtende Lichtquelle angeordnet ist und dass im Bereich der Lichtquelle zwei Kameras angeordnet sind, die das beleuchtete Metallband aufnehmen, wobei das System bestehend aus Lichtquelle und Kameras zur Ermittlung der im Metallband wirkenden Zugspannungen geeignet ist, wobei die beiden Kameras voneinander beabstandet angeordnet sind, so dass sie das Metallband aus zwei unterschiedlichen Richtungen aus aufnehmen.The device for producing a metal strip has a number of rollers over which the metal strip is guided under such a belt tension and moved in a conveying direction that it is largely flat at least between two rollers. According to the invention, at least one light source illuminating the metal strip is arranged between two rollers and two cameras are arranged in the region of the light source, which record the illuminated metal strip, the system consisting of light source and cameras being suitable for determining the tensile stresses acting in the metal strip wherein the two cameras are spaced apart so as to receive the metal strip from two different directions.
Die Kameras sind vorzugsweise digitaler Bauart.The cameras are preferably of digital design.
Ferner können Aufnahmemittel vorhanden sein, die das von der Kamera oder den Kameras aufgenommene Bild in kurzen zeitlichen Abständen abspeichern.Furthermore, recording means may be present which store the image taken by the camera or the cameras at short time intervals.
Schließlich kann vorgesehen werden, dass die Aufnahmemittel mit Auswertemitteln in Verbindung stehen, die zum Vergleich der von der Kamera oder den Kameras aufgenommenen Bildern geeignet sind.Finally, provision can be made for the recording means to be connected to evaluation means which are suitable for comparing the images recorded by the camera or the cameras.
Mit der vorgeschlagenen Vorgehensweise ist es möglich, das Metallband nach dem Walzen unter relativ hoher Spannung und damit weitgehend eben zu führen und dennoch feststellen zu können, wie es um die Unebenheit des Bandes - bei Wegnahme der hohen Spannung im Band - bestellt ist. Die ermittelten Zugspannungen geben einen guten Hinweis auf die Qualität des gefertigten Bandes, so dass im gegebenen Falle auf die Fertigungsparameter Einfluss genommen werden kann.With the proposed approach, it is possible to lead the metal strip after rolling under relatively high tension and thus largely flat and still be able to determine how it is ordered to the unevenness of the band - when removing the high voltage in the band. The determined tensile stresses give a good indication of the quality of the manufactured strip, so that in the given case the manufacturing parameters can be influenced.
Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen und der Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels der Erfindung. Die einzige Figur zeigt die Seitenansicht einer Walzvorrichtung für die Herstellung eines Metallbandes.Further features and details of the invention will become apparent from the claims and the description of an embodiment of the invention shown in the drawing. The single figure shows the side view of a rolling device for the production of a metal strip.
Das Metallband 1 wird im linken Bereich der Figur in einem Walzbereich von zwei Arbeitswalzen 11 und 12 gewalzt, die von zwei Stützwalzen 13 und 14 gestützt werden. Das Metallband 1 wird dann in eine Förderrichtung F mit vorgegebener Fördergeschwindigkeit gefördert, wobei es unter einer definierten Bandspannung S gehalten wird. Die Bandspannung S wird dadurch aufrecht erhalten, dass das Metallband 1 in der skizzierte Weise geführt wird, d. h. es wird insbesondere - auf der rechten Seite der Figur - mittels zwei Rollen 4 und 5 S-förmig geführt, so dass ein gewünschtes Niveau an Bandspannung S zwischen den Walzen 11, 12 und den Rollen 4, 5 aufrecht erhalten werden kann.The metal strip 1 is rolled in the left portion of the figure in a rolling range of two
Aufgrund der Bandspannung S weist das Metallband 1 einen hohen Planheitsgrad auf, d. h. die Oberflächenunebenheiten sind gering.Due to the belt tension S, the metal strip 1 has a high degree of flatness, d. H. the surface irregularities are low.
Zwischen zwei Rollen 2 und 3 wird das Metallband 1 daher weitgehend eben geführt. Dort ist eine Lichtquelle 6 angeordnet, mit der die Oberfläche des Metallbandes 1 beleuchtet werden kann. Weiterhin sind zwei Kameras 7 und 8 an zwei verschiedenen Orten angebracht, die von der Bandoberfläche zwei Bilder aufnehmen können.Between two rollers 2 and 3, the metal strip 1 is therefore guided largely flat. There, a light source 6 is arranged, with which the surface of the metal strip 1 can be illuminated. Furthermore, two
Das aus der Lichtquelle 6 und den Kameras 7 und 8 bestehende System, das für die Durchführung der erfindungsgemäßen Vorgehensweise tauglich ist, ist beispielsweise unter der Bezeichnung Q-400 als Digital 3D-Correlation System der Firma DANTEC Ettemeyer GmbH, Elchingen, Deutschland, (www.dantec-ettemeyer.com) bekannt und erhältlich. Das verfügbare System eignet sich gut, um innere Spannungen im weitgehend ebenen Metallband sichtbar zu machen und auszuwerten, auch wenn hierzu Bandzugschwankungen in geringem Maß notwendig werden sollten.The system consisting of the light source 6 and the
Die Kameras 7, 8 stehen mit einem Aufnahmemittel 9 in Verbindung, das dazu in der Lage ist, eine Vielzahl von Aufnahmen in kurzer Zeit abzuspeichern. Die aufgenommenen Bilder können in einem sich anschließenden Auswertemittel 10 ausgewertet werden, wobei es insbesondere möglich ist, die Verteilung der Zugspannungen im Metallband 1 sowie deren zeitliche Veränderung zu beo-bachten. In Abhängigkeit hiervon kann auf den Herstellungsprozess für das Metallband 1 Einfluss genommen werden.The
Bevorzugt wird im Metallband 1 bei der Messung der Spannungen ein Bandzug aufrecht erhalten, der mindestens 10 % der Streckgrenze des Materials des Metallbandes entspricht.Preferably, a strip tension is maintained in the metal strip 1 in the measurement of the voltages, which corresponds to at least 10% of the yield strength of the material of the metal strip.
Die Verwendung der ermittelten Spannungen oder Spannungsdifferenzen im Metallband 1 bei der Herstellung des Metallbandes 1 kann bereits darin bestehen, dass die Spannungen im Band beobachtet werden und nur im Bedarfsfall, d. h. wenn Spannungsverteilungsverhältnisse im Band einen unzulässigen Wert überschreiten, Maßnahmen ergriffen werden.The use of the determined voltages or voltage differences in the metal strip 1 in the manufacture of the metal strip 1 may already consist in that the stresses are observed in the strip and only in case of need, d. H. If voltage distribution ratios in the band exceed an impermissible value, measures are taken.
Es kann aber auch vorgesehen werden, dass die ermittelten Werte im geschlossenen Regelkreis direkt in den Herstellungsprozess des Metallbandes eingesteuert werden.However, it can also be provided that the values determined are controlled in the closed loop directly in the production process of the metal strip.
- 11
- Metallbandmetal band
- 22
- Rollerole
- 33
- Rollerole
- 44
- Rollerole
- 55
- Rollerole
- 66
- Lichtquellelight source
- 77
- Kameracamera
- 88th
- Kameracamera
- 99
- Aufnahmemittelreceiving means
- 1010
- Auswertemittelevaluation
- 1111
- ArbeitswalzeStripper
- 1212
- ArbeitswalzeStripper
- 1313
- Stützwalzesupporting roll
- 1414
- Stützwalzesupporting roll
- SS
- Bandspannungbelt tension
- FF
- Förderrichtungconveying direction
Claims (8)
- Method of producing a metal strip (1), in which the metal strip (1) is guided over a number of rollers (2, 3, 4, 5) under such a strip tension and moved in a conveying direction (4) that it is at least substantially flat between two rollers (2, 3), wherein in the metal strip (1), which is substantially flat under tension stress, between the at least two rollers (2, 3) the internal tensile stresses acting in the metal strip (1) are made optically visible and the ascertained tensile stresses or tensile stress differences are evaluated in the production of the metal strip (1), characterised in that the metal strip (1) is irradiated by a light source (6) and photographed by two cameras (7, 8) from two different directions.
- Method according to claim 1, characterised in that the strip tension (S) exerted on the metal strip (1) is selected in dependence on the ascertained tensile stresses in the metal strip (1).
- Method according to claim 2, characterised in that in the case of rising tensile stress in the metal strip (1) the strip tension (S) exerted on the metal strip (1) is increased.
- Method according to any one of claims 1 to 3, characterised in that the tensile stresses acting in the metal strip (1) are ascertained several times at short intervals in time.
- Method according to claim 4, characterised in that the change in the tensile stresses acting in the metal strip (1) is determined by comparison of a number of tensile stresses ascertained at intervals in time.
- Device for producing a metal strip (1), with a number of rollers (2, 3, 4, 5), over which the metal strip (1) is guided under such a strip tension (S) and moved in a conveying direction (F) that it is as least substantially flat between two rollers (2, 3), particularly for performance of the method according to any one of claims 1 to 5, characterised in that at least one light source (6) illuminating the metal strip (1) is arranged between two rollers (2, 3) and that arranged in the region of the light source (6) are two cameras (7, 8) which photograph the illuminated metal strip (1), wherein the system consisting of light source (6) and cameras (7, 8) is suitable for ascertaining the tensile stresses acting in the metal strip (1), wherein the two cameras (7, 8) are arranged at a spacing from one another so that they photograph the metal strip from two different directions.
- Device according to claim 6, characterised in that recording means (9) are present, which store the image which is photographed by the camera or the cameras (7, 8) at short intervals in time.
- Device according claim 7, characterised in that recording means (9) are connected with evaluating means (10) suitable for comparison of the images recorded by the camera or the cameras (7, 8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005023270A DE102005023270A1 (en) | 2005-05-20 | 2005-05-20 | Method and device for producing a metal strip |
| PCT/EP2006/004753 WO2006122817A1 (en) | 2005-05-20 | 2006-05-19 | Method and apparatus for manufacturing a metal strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1899086A1 EP1899086A1 (en) | 2008-03-19 |
| EP1899086B1 true EP1899086B1 (en) | 2009-08-26 |
Family
ID=36754730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06753734A Not-in-force EP1899086B1 (en) | 2005-05-20 | 2006-05-19 | Method and apparatus for manufacturing a metal strip |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US7971461B2 (en) |
| EP (1) | EP1899086B1 (en) |
| JP (1) | JP2008541074A (en) |
| CN (1) | CN101287558B (en) |
| AT (1) | ATE440682T1 (en) |
| BR (1) | BRPI0608296A2 (en) |
| CA (1) | CA2598921C (en) |
| DE (2) | DE102005023270A1 (en) |
| ES (1) | ES2328956T3 (en) |
| RU (1) | RU2364455C2 (en) |
| UA (1) | UA90295C2 (en) |
| WO (1) | WO2006122817A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011083405A1 (en) * | 2010-12-21 | 2012-06-21 | Sms Siemag Ag | Method and device for surface inspection of band pieces |
| FI3724622T3 (en) * | 2017-12-11 | 2024-03-13 | Tata Steel Ijmuiden Bv | Method and system for measuring the temperature of a moving metal strip |
| FR3139895A1 (en) | 2022-09-16 | 2024-03-22 | Constellium Neuf Brisach | Device and method for checking the flatness of a metal sheet. |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148414A (en) * | 1980-04-21 | 1981-11-17 | Nisshin Steel Co Ltd | Correcting method for material strip |
| DE3151384A1 (en) * | 1981-12-24 | 1983-07-07 | Thyssen AG vorm. August Thyssen-Hütte, 4100 Duisburg | METHOD FOR MEASURING THE WIDTH, IN PARTICULAR OF THE HEAD, OF SELF-LUMINOUS ROLLING MATERIAL AND METHOD FOR SCOOPING THE HEAD OF SELF-LUMINOUS ROLLING MATERIAL |
| US5083867A (en) * | 1988-11-28 | 1992-01-28 | Allegheny Ludlum Corporation | Slab surface contour monitor |
| US5212647A (en) * | 1991-07-15 | 1993-05-18 | Preco Industries, Inc. | Die stamping press having ccd camera system for automatic 3-axis die registration |
| RU2048938C1 (en) | 1993-01-14 | 1995-11-27 | Акционерное общество "Новолипецкий металлургический комбинат" | Apparatus for monitoring distribution of tension along width of strip, being rolled |
| FR2725512B1 (en) | 1994-10-07 | 1996-10-31 | Lorraine Laminage | DEVICE FOR EVALUATING THE PLANEITY OF A RUNNING PRODUCT |
| EP0977978B1 (en) * | 1997-02-26 | 2004-04-28 | Siemens Aktiengesellschaft | Device for measuring tensile stress distribution in a metal strip |
| DE19709992C1 (en) * | 1997-03-11 | 1998-10-01 | Betr Forsch Inst Angew Forsch | Method for measuring the surface geometry of hot strip |
| GB2323244A (en) * | 1997-03-14 | 1998-09-16 | Inventec Corp | Method of switching |
| DE19719994B4 (en) * | 1997-05-13 | 2005-01-05 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for influencing the stress distribution in metal strips or sheets of, in particular, non-ferromagnetic material |
| GB9719361D0 (en) * | 1997-09-11 | 1997-11-12 | Kvaerner Clecim Cont Casting | Hot Flat Rolling Mill Stand and Control Method and Apparatus Therefor |
| FR2781570B1 (en) | 1998-07-21 | 2000-08-25 | Lorraine Laminage | DEVICE FOR DETECTING SURFACE DEFECTS OF THREADED METAL STRIPS |
| JP2000171411A (en) | 1998-12-04 | 2000-06-23 | Nkk Corp | Automatic treatment method for edge crack part in strip body |
| DE19919801A1 (en) | 1999-04-30 | 2000-11-02 | Josef Froehling Gmbh Walzwerks | Strip tension distribution is measured during rolling by measuring strip flatness |
| DE10007364A1 (en) * | 1999-06-10 | 2001-03-01 | Sms Demag Ag | Process for regulating the pull between the roll stands of roll trains comprises quantitatively acquiring a fluctuation amplitude and fluctuation frequency, and determining a pull and/or the pressure between the roll stands |
| JP3824059B2 (en) | 2000-08-03 | 2006-09-20 | Ｊｆｅスチール株式会社 | Surface inspection apparatus and manufacturing method of steel plate without micro unevenness defect |
| RU2203752C2 (en) | 2001-05-23 | 2003-05-10 | Открытое акционерное общество "Уральский завод тяжелого машиностроения" | Apparatus for regulating interstand tension of strip in continuous cold rolling mill |
| JP4703911B2 (en) * | 2001-08-10 | 2011-06-15 | 日新製鋼株式会社 | Metal strip hole inspection system |
| DE10205132A1 (en) | 2002-02-07 | 2003-08-28 | Bfi Vdeh Inst Angewandte Forschung Gmbh | Method and device for the optical measurement of the surface shape and for the optical surface inspection of moving strips in rolling and further processing plants |
| CN2534154Y (en) * | 2002-03-18 | 2003-02-05 | 王鹏 | Single end driving C type rotator tippler |
| DE10301379A1 (en) | 2003-01-16 | 2004-07-29 | Parsytec Computer Gmbh | Method and device for surface control |
-
2005
- 2005-05-20 DE DE102005023270A patent/DE102005023270A1/en not_active Withdrawn
-
2006
- 2006-05-19 ES ES06753734T patent/ES2328956T3/en active Active
- 2006-05-19 EP EP06753734A patent/EP1899086B1/en not_active Not-in-force
- 2006-05-19 BR BRPI0608296-3A patent/BRPI0608296A2/en not_active Application Discontinuation
- 2006-05-19 RU RU2007129432/02A patent/RU2364455C2/en not_active IP Right Cessation
- 2006-05-19 US US11/886,056 patent/US7971461B2/en not_active Expired - Fee Related
- 2006-05-19 CN CN2006800015157A patent/CN101287558B/en not_active Expired - Fee Related
- 2006-05-19 WO PCT/EP2006/004753 patent/WO2006122817A1/en active Application Filing
- 2006-05-19 JP JP2008510516A patent/JP2008541074A/en active Pending
- 2006-05-19 UA UAA200709475A patent/UA90295C2/en unknown
- 2006-05-19 DE DE502006004671T patent/DE502006004671D1/en active Active
- 2006-05-19 CA CA2598921A patent/CA2598921C/en not_active Expired - Fee Related
- 2006-05-19 AT AT06753734T patent/ATE440682T1/en active
-
2011
- 2011-05-26 US US13/134,077 patent/US20110252848A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ATE440682T1 (en) | 2009-09-15 |
| DE102005023270A1 (en) | 2006-11-23 |
| US20110252848A1 (en) | 2011-10-20 |
| CN101287558B (en) | 2010-05-26 |
| RU2364455C2 (en) | 2009-08-20 |
| US20080125298A1 (en) | 2008-05-29 |
| BRPI0608296A2 (en) | 2009-12-08 |
| UA90295C2 (en) | 2010-04-26 |
| ES2328956T3 (en) | 2009-11-19 |
| US7971461B2 (en) | 2011-07-05 |
| WO2006122817A1 (en) | 2006-11-23 |
| CA2598921C (en) | 2014-03-18 |
| EP1899086A1 (en) | 2008-03-19 |
| CA2598921A1 (en) | 2006-11-23 |
| CN101287558A (en) | 2008-10-15 |
| JP2008541074A (en) | 2008-11-20 |
| DE502006004671D1 (en) | 2009-10-08 |
| RU2007129432A (en) | 2009-02-10 |
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