EP0635319A1 - Method and device for eliminating gutter curvatures in metal sheets, especially thin metal sheets up to 2,0 mm thickness - Google Patents
Method and device for eliminating gutter curvatures in metal sheets, especially thin metal sheets up to 2,0 mm thickness Download PDFInfo
- Publication number
- EP0635319A1 EP0635319A1 EP94105738A EP94105738A EP0635319A1 EP 0635319 A1 EP0635319 A1 EP 0635319A1 EP 94105738 A EP94105738 A EP 94105738A EP 94105738 A EP94105738 A EP 94105738A EP 0635319 A1 EP0635319 A1 EP 0635319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- strip
- correction
- straightening
- transverse curvature
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/04—Lateral deviation, meandering, camber of product
Definitions
- the invention relates to a method for eliminating transverse curvatures in metal strips, in particular thin metal strips up to 2.0 mm thick, which are straightened, bent and / or stretched in the course of continuous straightening in a strip process line, the transverse curvature following straightening and / or tensile stretching in an area of the strip process line with a substantially lower strip tension than in the stretch bending level and / or tensile stretching area is detected.
- belt process lines with tension stretching systems are known in which the transverse curvature after stretching is minimized in a section of the belt process line with a much lower belt tension than in the stretching area with correction rollers which have an invariable diameter and require a predetermined wrap.
- a disadvantage of this known method is the fact that the choice of the correction roller diameter and the predetermined wraps cannot optimally eliminate the transverse curvature in all metal strips, also taking into account such parameters as strip tension, strip thickness and strength.
- the invention has for its object to provide a method of the embodiment described in the introduction, according to which the transverse curvature can be eliminated in a simple and functional manner in practically no dead distances or dead times in the strip process line for all metal strips.
- a stretch leveling system suitable for solving this task is to be created.
- the invention teaches in a method of the embodiment described in the introduction that the transverse curvature in the area with the lower strip tension is corrected by means of a correction roller which can be adjusted in the immersion depth.
- a correction roller which can be adjusted in the immersion depth.
- the correction roller in the area of the belt process line with the lower belt tension acts uniformly over the entire belt width.
- the transverse curvature is particularly pronounced in this area and can be measured perfectly, so that the transverse curvature can be corrected in the sense of a correction for all metal strips in the strip process line, regardless of the respective strip thickness and yield strength or strength.
- a stretch bending straightening system which is particularly suitable for carrying out the method according to the invention and has at least one pulling roller set and a brake roller set and possibly a stretching bending roller between the pulling roller set and the braking roller set, with a measuring device for detecting the transverse curvature of the relevant one behind the last pulling roller of the last pulling roller set Metal strip is arranged, is characterized in that in the strip running direction behind the last pulling roller is arranged a correction roller adjustable in the immersion depth against the respective metal strip, and that the correction roller receives actuating signals depending on the transverse curvature detected by an intermediate control device for correcting the transverse curvature.
- the correction roller is immersed more or less deeply in the respective continuous metal strip on the basis of the received control signals, so that an exact removal of the transverse curvatures is ensured.
- the correction roller can in principle be arranged downstream of the measuring device, but according to a preferred embodiment of the invention, it is arranged upstream of the measuring device in the direction of tape travel.
- the correction rollers can be arranged between two guide rollers which, as it were, fulfill the support function for the metal strip passing through. -
- the correction rollers can be arranged between two guide rollers which, as it were, fulfill the support function for the metal strip passing through.
- a straightening straightening system for eliminating transverse curvatures in metal strips 1 which has one or more tensioning devices, each with a tension roller set 2 and a brake roller set 3, and in one embodiment, a straightening bending straightening system with a tension bending roller 4 between the assigned tension roller set 2 and the brake roller set 3 has.
- a measuring device 6 for detecting the transverse curvature of the metal strip 1 in question is arranged behind the last pull roller 5 of the last set of pull rollers.
- a correction roller 7 which is adjustable in the immersion depth against the respective metal strip 1 is arranged in the strip running direction behind the last pull roller 5.
- This correction roller 7 receives control signals from an interposed control device 8 as a function of the respectively detected transverse curvature for correcting this transverse curvature.
- the correction roller 7 adjustable in the immersion depth is adjusted accordingly.
- the correction roller 7 is upstream of the measuring device 6 according to the embodiment.
- a correction roller 7 can be arranged on both sides of the continuous metal strip 1, the correction roller 7 or correction rollers can also be arranged between two guide rollers 9.
- a driver 10, a pair of scissors 11 and an inspection section 12 can be arranged downstream of the measuring device 6 in order to cut panels out of the metal strip 1 by means of quality control.
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Beseitigen von Querkrümmungen in Metallbändern, insbesondere dünnen Metallbändern bis zu 2,0 mm Dicke, die im Zuge eines kontinuierlichen Richtens in einer Bandprozeßlinie streckbiegegerichtet, biegegerichtet und/oder zuggereckt werden, wobei die Querkrümmung im Anschluß an das Streckbiegerichten und/oder Zugrecken in einem Bereich der Bandprozeßlinie mit wesentlich niedrigerem Bandzug als im Streckbiegericht- und/oder Zugreckbereich erfaßt wird.The invention relates to a method for eliminating transverse curvatures in metal strips, in particular thin metal strips up to 2.0 mm thick, which are straightened, bent and / or stretched in the course of continuous straightening in a strip process line, the transverse curvature following straightening and / or tensile stretching in an area of the strip process line with a substantially lower strip tension than in the stretch bending level and / or tensile stretching area is detected.
In Bandprozeßlinien entstehen unerwünschte Krümmungen in Metallbändern, wenn diese Metallbänder über Zug- bzw. Bremstrommeln von Spannvorrichtungen, Streckbiegerollen, Richtrollen oder Umlenkrollen laufen. Diese Krümmung äußert sich in der Bandprozeßlinie als Querkrümmung und in einer aus dem Metallband herausgeschnittenen Tafel als Längskrümmung, die auch als Coilset bezeichnet wird. Derartige Querkrümmungen und folglich der Coilset führen zu Problemen bei der Weiterverarbeitung der Metallbändern.In belt process lines, undesirable curvatures occur in metal belts when these metal belts run over tension or braking drums of tensioning devices, stretch bending rollers, straightening rollers or deflection rollers. This curvature manifests itself in the strip process line as a transverse curvature and in a sheet cut out of the metal strip as a longitudinal curvature, which is also referred to as a coil set. Such transverse curvatures and consequently the coil set lead to problems in the further processing of the metal strips.
Um derartige Probleme zu vermeiden, ist es bekannt, die Querkrümmung im Zuge des Streckbiegerichtens durch Verstellen der in der Eintauchtiefe einstellbaren Streckbiegerolle zu kompensieren. Dabei wird die Querkrümmung in einem nachfolgenden Bereich der Bandprozeßlinien mit einem wesentlich niedrigerem Bandzug gemessen und ein Stellsignal an die Streckbiegerolle gegeben, die sich allerdings in einem Bereich der Bandprozeßlinie mit erhöhtem Bandzug befindet (vgl. US-PS 44 57 149). Unbefriedigend ist bei diesem bekannten Verfahren der erforderliche Einsatz der Streckbiegerolle, die bei empfindlichen Metallbändern Bandoberflächenschäden hervorrufen kann. Außerdem resultiert aus dem Einsatz einer solchen Streckbiegerolle ein ungleichmäßiger Effekt über die Bandbreite, da das Metallband im Streckbiegegerüst hohen Zugspannungen ausgesetzt ist und die Bandstreckung zu einer Verringerung der Bandbreite sowie zu einem mehrachsigen Spannungszustand führen kann. Besonders nachteilig ist jedoch die Tatsache, daß durch die Entfernung zwischen der Meßstelle zum Erfassen der Bandkrümmung und der Streckbiegerolle eine Totstrecke bzw. Totzeit entsteht, die ein Ausregeln solcher Querkrümmungen über die Totstrecke unmöglich macht, welche aus Schwankungen des Bandzuges, der Banddicke, und der Streckgrenze bzw. Festigkeit des Bandmaterials resultieren. Folglich können nach wie vor Bandabschnitte mit den unerwünschten Querkrümmungen entstehen, welche Ausschuß sind und aus dem behandelten Metallband herausgeschnitten werden müssen. Das ist in produktionstechnischer und kostenmäßiger Hinsicht außerordentlich aufwendig.In order to avoid such problems, it is known to compensate for the transverse curvature in the course of the stretch bending straightening by adjusting the stretch bending roll that can be adjusted in the immersion depth. In this case, the transverse curvature is measured in a subsequent area of the strip process lines with a significantly lower strip tension and an actuating signal is sent to the stretch bending roller, which, however, is in an area of the strip process line with increased strip tension is (see. US-PS 44 57 149). In this known method, the required use of the stretching bending roller, which can cause strip surface damage on sensitive metal strips, is unsatisfactory. In addition, the use of such a stretch bending roll results in an uneven effect over the bandwidth, since the metal strip in the stretch bending frame is exposed to high tensile stresses and the strip stretching can lead to a reduction in the bandwidth and to a multi-axis tension state. However, the fact that the distance between the measuring point for detecting the strip curvature and the stretching bending roll creates a dead distance or dead time that makes it impossible to correct such transverse curvatures over the dead distance, which results from fluctuations in the strip tension, the strip thickness, and the Yield strength or strength of the strip material result. Consequently, strip sections with the undesirable transverse curvatures can still arise, which are rejects and must be cut out of the treated metal strip. This is extremely complex in terms of production technology and costs.
Außerdem kennt man Bandprozeßlinien mit Zugreckanlagen, bei denen die Querkrümmung nach dem Zugrecken in einem Abschnitt der Bandprozeßlinie mit wesentlich niedrigerem Bandzug als im Zugreckbereich mit Korrekturrollen minimiert werden, die einen unveränderlichen Durchmesser aufweisen und eine vorgegebene Umschlingung bedingen. Nachteilig bei diesem bekannten Verfahren ist die Tatsache, daß die Wahl des Korrekturrollendurchmessers und die vorgegebenen Umschlingungen nicht bei sämtlichen Metallbändern die Querkrümmung optimal beseitigen können, und zwar ebenfalls unter Berücksichtigung solcher Parameter wie Bandzug, Banddicke und Festigkeit.In addition, belt process lines with tension stretching systems are known in which the transverse curvature after stretching is minimized in a section of the belt process line with a much lower belt tension than in the stretching area with correction rollers which have an invariable diameter and require a predetermined wrap. A disadvantage of this known method is the fact that the choice of the correction roller diameter and the predetermined wraps cannot optimally eliminate the transverse curvature in all metal strips, also taking into account such parameters as strip tension, strip thickness and strength.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs beschriebenen Ausführungsform anzugeben, wonach sich in der Bandprozeßlinie bei sämtlichen Metallbändern die Querkrümmung praktisch ohne Totstrecken bzw. Totzeiten in einfacher und funktionsgerechter Weise einwandfrei beseitigen lassen. Außerdem soll eine zur Lösung dieser Aufgabe geeignete Streckrichtanlage geschaffen werden.The invention has for its object to provide a method of the embodiment described in the introduction, according to which the transverse curvature can be eliminated in a simple and functional manner in practically no dead distances or dead times in the strip process line for all metal strips. In addition, a stretch leveling system suitable for solving this task is to be created.
Zur Lösung der gestellten Aufgabe lehrt die Erfindung bei einem Verfahren der eingangs beschriebenen Ausführungsform, daß die Querkrümmung in dem Bereich mit dem niedrigeren Bandzug mittels einer in der Eintauchtiefe einstellbaren Korrekturrolle ausgeregelt wird. - Diese Maßnahmen der Erfindung haben zunächst einmal zur Folge, daß Totstrecken bzw. Totzeiten nahezug vollständig eliminiert werden. Hinzu kommt, daß die Korrekturrolle im Bereich der Bandprozeßlinie mit dem niedrigeren Bandzug gleichmäßig über die gesamte Bandbreite wirkt. Außerdem tritt die Querkrümmung in diesem Bereich besonders deutlich hervor und läßt sich einwandfrei messen, so daß sich für sämtliche Metallbänder in der Bandprozeßlinie die Querkrümmung einwandfrei im Sinn einer Korrektur ausregeln läßt, und zwar unabhängig von der jeweiligen Banddicke und Streckgrenze bzw. Festigkeit.To achieve the object, the invention teaches in a method of the embodiment described in the introduction that the transverse curvature in the area with the lower strip tension is corrected by means of a correction roller which can be adjusted in the immersion depth. - These measures of the invention have the consequence that dead distances or dead times are almost completely eliminated. In addition, the correction roller in the area of the belt process line with the lower belt tension acts uniformly over the entire belt width. In addition, the transverse curvature is particularly pronounced in this area and can be measured perfectly, so that the transverse curvature can be corrected in the sense of a correction for all metal strips in the strip process line, regardless of the respective strip thickness and yield strength or strength.
Eine Streckbiegerichtanlage, die zur Durchführung des erfindungsgemäßen Verfahrens besonders geeignet ist und zumindest einen Zugrollensatz und einen Bremsrollensatz und ggf. eine Streckbiegerolle zwischen dem Zugrollensatz und dem Bremsrollensatz aufweist, wobei in Bandlaufrichtung hinter der letzten Zugrolle des letzten Zugrollensatzes ein Meßgerät zum Erfassen der Querkrümmung des betreffenden Metallbandes angeordnet ist, ist dadurch gekennzeichnet, daß in Bandlaufrichtung hinter der letzten Zugrolle eine in der Eintauchtiefe gegen das jeweilige Metallband einstellbare Korrekturrolle angeordnet ist, und daß die Korrekturrolle in Abhängigkeit von der jeweils erfaßten Querkrümmung von einer zwischengeschalteten Regelvorrichtung Stellsignale zum Ausregeln der Querkrümmung erhält. Dazu wird die Korrekturrolle aufgrund der empfangenen Stellsignale mehr oder weniger tief in das jeweilige durchlaufende Metallband eingetaucht, so daß eine exakte Beseitigung der Querkrümmungen gewährleistet ist. Dazu kann die Korrekturrolle grundsätzlich dem Meßgerät nachgeordnet sein, nach bevorzugter Ausführungsform der Erfindung ist sie dem Meßgerät in Bandlaufrichtung jedoch vorgeordnet. Im Rahmen der Erfindung besteht auch die Möglichkeit, beidseitig des durchlaufenden Metallbandes eine Korrekturrolle anzuordnen, um eine positive und negative Korrektur der auftretenden Querkrümmungen zu erreichen. In einem solchen Fall - aber auch in anderen Fällen - können die Korrekturrollen zwischen zwei Führungsrollen angeordnet sein, die gleichsam Auflagerfunktion für das jeweils durchlaufende Metallband erfüllen. - Stets besteht die Möglichkeit, die Querkrümmung vor dem Besäumen mittels einer nachgeordneten Besäumschere zu beseitigen, so daß eine bessere Breitentoleranz nach dem Besäumen zur Verfügung steht.A stretch bending straightening system which is particularly suitable for carrying out the method according to the invention and has at least one pulling roller set and a brake roller set and possibly a stretching bending roller between the pulling roller set and the braking roller set, with a measuring device for detecting the transverse curvature of the relevant one behind the last pulling roller of the last pulling roller set Metal strip is arranged, is characterized in that in the strip running direction behind the last pulling roller is arranged a correction roller adjustable in the immersion depth against the respective metal strip, and that the correction roller receives actuating signals depending on the transverse curvature detected by an intermediate control device for correcting the transverse curvature. For this purpose, the correction roller is immersed more or less deeply in the respective continuous metal strip on the basis of the received control signals, so that an exact removal of the transverse curvatures is ensured. For this purpose, the correction roller can in principle be arranged downstream of the measuring device, but according to a preferred embodiment of the invention, it is arranged upstream of the measuring device in the direction of tape travel. Within the scope of the invention, there is also the possibility of arranging a correction roller on both sides of the continuous metal strip in order to achieve a positive and negative correction of the transverse curvatures that occur. In such a case - but also in other cases - the correction rollers can be arranged between two guide rollers which, as it were, fulfill the support function for the metal strip passing through. - There is always the possibility of eliminating the transverse curvature before trimming using a subsequent trimming shear, so that a better width tolerance is available after trimming.
Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert; es zeigen:
- Fig. 1
- eine erfindungsgemäße Streckrichtanlage in schematischer Seitenansicht ohne Streckbiegerolle,
- Fig. 2
- den Gegenstand nach Fig. 1 in einer zwischen zwei Führungsrollen angeordneten Korrekturrolle,
- Fig. 3
- den Gegenstand nach Fig. 2 mit beidseitig des durchlaufenden Metallbandes angeordneten Korrekturrollen und
- Fig. 4
- eine abgewandelte Ausführungsform des Gegenstandes nach Fig. 1 mit einer Streckbiegerolle und ferner dem Meßgerät nachgeschaltetem Treiber, nachgeschalteter Schere und nachgeschalteter Inspektionsstrecke zum Herausschneiden von Tafeln aus dem betreffenden Metallband zu Kontrollzwecken.
- Fig. 1
- a straightening system according to the invention in a schematic side view without a stretching roll,
- Fig. 2
- 1 in a correction roller arranged between two guide rollers,
- Fig. 3
- 2 with correction rollers arranged on both sides of the continuous metal strip and
- Fig. 4
- a modified embodiment of the object of FIG. 1 with a stretch bending roller and further the driver downstream of the measuring device, downstream scissors and downstream inspection section for cutting panels out of the metal strip in question for control purposes.
In den Figuren ist eine Streckrichtanlage zum Beseitigen von Querkrümmungen in Metallbändern 1 dargestellt, die eine oder mehrere Spannvorrichtungen mit jeweils einem Zugrollensatz 2 und einem Bremsrollensatz 3 und bei einer Ausführungsform eine Streckbiegerichtanlage mit einer Streckbiegerolle 4 zwischen dem zugeordneten Zugrollensatz 2 und Bremsrollensatz 3 aufweist. In Bandlaufrichtung ist hinter der letzten Zugrolle 5 des letzten Zugrollensatzes ein Meßgerät 6 zum Erfassen der Querkrümmung des betreffenden Metallbandes 1 angeordnet. Ferner ist in Bandlaufrichtung hinter der letzten Zugrolle 5 eine in der Eintauchtiefe gegen das jeweilige Metallband 1 einstellbare Korrekturrolle 7 angeordnet. Diese Korrekturrolle 7 erhält von einer zwischengeschalteten Regelvorrichtung 8 Stellsignale in Abhängigkeit von der jeweils erfaßten Querkrümmung zum Ausregeln dieser Querkrümmung. Dazu wird die in der Eintauchtiefe einstellbare Korrekturrolle 7 entsprechend angestellt. Die Korrekturrolle 7 ist nach dem Ausführungsbeispiel dem Meßgerät 6 vorgeordnet.In the figures, a straightening straightening system for eliminating transverse curvatures in
Ferner kann beidseitig des durchlaufenden Metallbandes 1 eine Korrekturrolle 7 angeordnet sein, können ferner die Korrekturrolle 7 bzw. Korrekturrollen zwischen zwei Führungsrollen 9 angeordnet sein. Zum Zwecke der Qualitätsprüfung können dem Meßgerät 6 ein Treiber 10, eine Schere 11 und eine Inspektionsstrecke 12 nachgeordnet sein, um im Wege der Qualitätskontrolle Tafeln aus dem Metallband 1 herauszuschneiden.Furthermore, a
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4323385 | 1993-07-13 | ||
| DE4323385A DE4323385C1 (en) | 1993-07-13 | 1993-07-13 | Method for eliminating transverse curvatures in metal strips, in particular thin metal strips up to 2.0 mm thick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0635319A1 true EP0635319A1 (en) | 1995-01-25 |
| EP0635319B1 EP0635319B1 (en) | 1996-05-08 |
Family
ID=6492665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94105738A Expired - Lifetime EP0635319B1 (en) | 1993-07-13 | 1994-04-14 | Method and device for eliminating gutter curvatures in metal sheets, especially thin metal sheets up to 2,0 mm thickness |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5535610A (en) |
| EP (1) | EP0635319B1 (en) |
| AT (1) | ATE137693T1 (en) |
| DE (1) | DE4323385C1 (en) |
| FI (1) | FI111445B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509067A1 (en) * | 1995-03-14 | 1996-09-19 | Bwg Bergwerk Walzwerk | Process for the continuous straightening of thin metal strips, in particular aluminum and stainless steel strips with strip thicknesses of 0.1 mm to 0.5 mm, and straightening system for carrying out the method |
| DE19511801A1 (en) * | 1995-03-30 | 1996-10-02 | Schloemann Siemag Ag | Method and device for thickness control in film rolling |
| DE19520541C2 (en) * | 1995-06-03 | 1999-01-14 | Bwg Bergwerk Walzwerk | Method and device for correcting a rolled metal strip which is bent horizontally in the strip plane, in particular a metal strip with a strip thickness of 0.5 mm to 2.0 mm |
| AU757340B2 (en) | 1999-04-02 | 2003-02-20 | Hunter Douglas Industries Bv | Method and arrangement for automatic bow adjustment |
| DE10114883C1 (en) * | 2001-03-26 | 2002-10-31 | Bwg Bergwerk Walzwerk | Train stretching system for steel and metal strips |
| DE10124836C5 (en) * | 2001-05-22 | 2007-07-19 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for eliminating transverse curvatures in a metal strip |
| US6668610B2 (en) | 2001-12-27 | 2003-12-30 | Alcan International Limited | Method for continuous tension leveling of aluminum strip |
| DE10300362A1 (en) * | 2003-01-06 | 2004-07-22 | Sms Demag Ag | Method and plant for rolling and then reeling metal strips, in particular steel strips |
| GB0317158D0 (en) * | 2003-07-23 | 2003-08-27 | Mitel Networks Corp | A method to reduce acoustic coupling in audio conferencing systems |
| DE102004041732A1 (en) * | 2004-08-28 | 2006-03-02 | Sms Demag Ag | Method of straightening a metal strip and straightening machine |
| CA2526117C (en) * | 2004-10-28 | 2014-04-15 | Copperweld Canada Inc. | Tubular axle housing assembly with varying wall thickness |
| DE102007006810B3 (en) * | 2007-02-07 | 2008-10-02 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Device for leveling metal strips |
| DE102008024013B3 (en) * | 2008-05-16 | 2009-08-20 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method and device for straightening a metal strip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2203911A1 (en) * | 1972-01-28 | 1973-08-09 | Bwg Bergwerk Walzwerk | METHOD AND DEVICE FOR CONTROLLING THE FLATNESS OF A CONTINUOUSLY A STRETCH DEVICE IN THE TENSIONED CONDITION THROUGH METAL STRIP |
| US4457149A (en) * | 1981-03-26 | 1984-07-03 | Veest-Alpine Aktiengesellschaft | Apparatus for producing coils of metal strip |
| EP0508475A2 (en) * | 1991-04-12 | 1992-10-14 | Sumitomo Heavy Industries, Ltd | Tension roller leveler |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3171464A (en) * | 1962-09-04 | 1965-03-02 | Voss Engineering Co | Method of flattening metal strip or sheet |
| US3839888A (en) * | 1972-11-06 | 1974-10-08 | Wean United Inc | Tension levelling of strip |
| JPS6120622A (en) * | 1984-07-10 | 1986-01-29 | Mitsubishi Heavy Ind Ltd | Controlling method of tension leveler |
| JPS6462517A (en) * | 1987-09-01 | 1989-03-09 | Morinaga Gumi Kk | Continuous placement of concrete underwater |
| JPH04138821A (en) * | 1990-10-01 | 1992-05-13 | Mitsubishi Heavy Ind Ltd | Tension leveller |
-
1993
- 1993-07-13 DE DE4323385A patent/DE4323385C1/en not_active Expired - Lifetime
-
1994
- 1994-04-14 EP EP94105738A patent/EP0635319B1/en not_active Expired - Lifetime
- 1994-04-14 AT AT94105738T patent/ATE137693T1/en active
- 1994-06-16 US US08/261,066 patent/US5535610A/en not_active Expired - Lifetime
- 1994-07-11 FI FI943291A patent/FI111445B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2203911A1 (en) * | 1972-01-28 | 1973-08-09 | Bwg Bergwerk Walzwerk | METHOD AND DEVICE FOR CONTROLLING THE FLATNESS OF A CONTINUOUSLY A STRETCH DEVICE IN THE TENSIONED CONDITION THROUGH METAL STRIP |
| US4457149A (en) * | 1981-03-26 | 1984-07-03 | Veest-Alpine Aktiengesellschaft | Apparatus for producing coils of metal strip |
| EP0508475A2 (en) * | 1991-04-12 | 1992-10-14 | Sumitomo Heavy Industries, Ltd | Tension roller leveler |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4323385C1 (en) | 1995-01-19 |
| FI111445B (en) | 2003-07-31 |
| EP0635319B1 (en) | 1996-05-08 |
| US5535610A (en) | 1996-07-16 |
| ATE137693T1 (en) | 1996-05-15 |
| FI943291A0 (en) | 1994-07-11 |
| FI943291A (en) | 1995-01-14 |
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