EP0175844B1 - Method and device for correcting the thickness profile of a hot rolled strip in a multiple-stand rolling mill - Google Patents
Method and device for correcting the thickness profile of a hot rolled strip in a multiple-stand rolling mill Download PDFInfo
- Publication number
- EP0175844B1 EP0175844B1 EP85107045A EP85107045A EP0175844B1 EP 0175844 B1 EP0175844 B1 EP 0175844B1 EP 85107045 A EP85107045 A EP 85107045A EP 85107045 A EP85107045 A EP 85107045A EP 0175844 B1 EP0175844 B1 EP 0175844B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- strip
- rolling mill
- rolling
- stand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
- B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
-
- 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
- B21B1/26—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 hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/18—Rolls or rollers
- B21B2203/187—Tilting rolls
Definitions
- the invention relates to and a device for correcting the thickness profile of the strip to be rolled on a multi-stand rolling mill according to the preamble of the claim.
- rollers are also known, with which the shape of the roller is changed somewhat, in that the roller or its bearings are bent somewhat against the roller pitch by a hydraulic device at both ends. This bending is necessary at the ends, because otherwise the roller will roll the tape flat around the edges than in the middle, because the edges will flow more strongly under the roller pressure than the center of the tape.
- This balancing with a one-sided waveform can also be done automatically and very quickly when installing a measuring device for measuring the ban voltages distributed over the bandwidth, as is known from DE-PS 2633351.
- the measuring device and the pivoting device of the roller were originally developed to compensate for non-flat strip.
- the measuring device and the swiveling device can be used for guiding the strip precisely in the center of the rolling mill. Accurate central guidance is important for all subsequent correction devices, because these usually act symmetrically to the center of the rolling mill. It is expedient if more than one measuring device coupled to a roll swiveling device is attached for precise central guidance over the length of the rolling train.
- the manipulated variables for correcting the roll gap are calculated in a computer, which also contains the comparator for the measured values.
- the computer takes into account, for example, the calculation of the manipulated variable. the roll dimensions, the roll material width, the roll crowning, the rolling force and the temperature of the strip.
- FIGS. 1 and 2 An embodiment of the invention will be described with reference to FIGS. 1 and 2.
- 1 is the entire rolling mill in a side view and in Fig. 2 the beginning part of the rolling mill is seen from above.
- the roll stands are designated 11 to 17.
- the arrow 18 indicates the direction of entry of the rolling stock 19. This is first guided by the rollers 20 and 21 and by the slide guides 22 and 23 exactly in the middle of the rolling train in front of the first stand 11. If an error has occurred after passing through the first 2 stands 11 and 12, this is determined by the measuring rollers 24 to 30 of the measuring device 31 in the form of different tensions in the strip. The measurement results are compared in the computer 32. This calculates a manipulated variable that is based on a control with e.g. hydraulic adjustment 33 acts on the upper roller of the roll stand 12, whereby this roller is pivoted somewhat about its center. At this point, a measuring device can also be sufficient, which only gives signals from two sensors instead of the rollers 24 and 30.
- a structurally identical measuring device for correcting the central position of the strip 19 is installed again between the roll stands 13 and 14.
- a set of measuring rolls of identical construction to the measuring rolls 24 to 30 is installed, of which the outer one is designated by 34.
- These measuring rollers give their values via the measuring device 35 to the computer 36.
- a computer 38 is also installed, into which the rolling data of the last three stands 15, 16, 17, in particular the rolling force data from the force gauges 39, 40 and 41, are received. This computer calculates a manipulated variable for the control of the hydraulic roller bending device 42, which is arranged in the stand 17.
- curves are shown in FIG. 3, which represent the relationship between the rolling force in the stand 17, the crowning of the work rolls, the width of the rolled strip 19 with the roll bending value setting to be calculated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Die Erfindung betrifft und eine Vorrichtung zur Korrektur des Dickenprofils des zu walzenden Bandes an einer mehrgerüstigen Walzstraße gemäß dem Oberbegriff des Patentanspruchs.The invention relates to and a device for correcting the thickness profile of the strip to be rolled on a multi-stand rolling mill according to the preamble of the claim.
Es sind verschiedene Vorrichtungen bekannt, mit denen die Walzspaltform und somit das Dikkenprofil des zu walzenden Bandes verändert werden kann. Es gibt Walzgerüste, bei denen die obere Walze etwas geschwenkt werden kann, so daß eine geringe Drehung um eine durch den Mittelpunkt der Walze waagerecht liegende und um 90° zur Walzenachse stehende gedachte Achse, entsteht. Eine solche Vorrichtung wird zur Planheitssteuerung verwandt.There are known various devices with which the Walzs and thus the Dikkenprofil can be changed of the strip to be rolled p old-shape. There are roll stands in which the upper roll can be pivoted slightly, so that a slight rotation occurs about an imaginary axis lying horizontally through the center of the roll and standing at 90 ° to the roll axis. Such a device is used for flatness control.
Es sind außerdem Vorrichtungen bekannt, mit denen die Form der Walze etwas verändert wird, in dem die Walze bzw. ihre Lager durch eine hydraulische Einrichtung an beiden Enden etwas entgegen der Walzenanstellung gebogen wird. Dieses Verbiegen ist an den Enden notwendig, weil sonst die Walze das Band an den Rändern flacher als in der Mitte walzt, weil die Ränder unter dem Walzendruck stärker fließen als die Mitte des Bandes.Devices are also known, with which the shape of the roller is changed somewhat, in that the roller or its bearings are bent somewhat against the roller pitch by a hydraulic device at both ends. This bending is necessary at the ends, because otherwise the roller will roll the tape flat around the edges than in the middle, because the edges will flow more strongly under the roller pressure than the center of the tape.
Diese beiden bekannten Vorrichtungen zur Korrektur wurden bisher zum groben Ausregulieren von langsam, z.B. infolge von Abnutzung, sich entwickelnden Fehlern benutzt, deren Größe stichprobenhaft am fertig aufgewickelten ruhenden Band mit herkömmlichen Meßmethoden bestimmt wurde.These two known correction devices have hitherto been used to roughly regulate slowly, e.g. as a result of wear and tear, developing defects, the size of which was randomly determined on the completely wound stationary belt using conventional measuring methods.
Schneller wirkende regulierende Eingriffe warende regulierende Eingriffe waren bisher nur bei unplanem Band üblich, wenn das Band z.B. an einer Seite Wellen wirft. Dies war für das Bedienungspersonal sofort sichtbar. Die Wellenform an einer Seite entsteht immer dann, wenn diese Seite zu stark ausgewalzt wird, dann wird dort das Blech länger und wirft Wellen. Der Bedienungsmann mußte beim Vorliegen der Wellenform an einem der Walzgerüste durch Schwenken einer Walze den Walzspalt an der Seite vertrößern, an der die Wellenform auftritt.So far, regulating interventions that act faster were previously only customary for unplanned belts, e.g. waves on one side. This was immediately visible to the operating personnel. The waveform on one side always occurs when this side is rolled out too much, then the sheet lengthens there and throws waves. When the waveform was present on one of the roll stands, the operator had to widen the roll gap on the side where the waveform occurs by pivoting a roller.
Dieses Ausregulieren bei einseitiger Wellenform kann beim einbau eines Meßgerätes zum Messen der über der Bandbreite verteilten Banspannungen, wie es aus der DE-Ps 2633351 bekannt ist, auch automatisch und sehr schnell erfolgen.This balancing with a one-sided waveform can also be done automatically and very quickly when installing a measuring device for measuring the ban voltages distributed over the bandwidth, as is known from DE-PS 2633351.
Mit diesen bisher bekannten Verfahren und Vorrichtungen zur Korrektur der Walzspaltform sind Ungenauigkeiten nur in grobem Maße auszuregulieren, weil die in Längsrichtung verlaufende Mittellinie des Bandes nicht immer mit der Mitte der Walzstraße übereinstimmt und das Band quer zur Mittellinie der Walzstraße laufende seine Lage ändert. Gelegentlich sind die Schwankungen sogar so groß, daß das Band seitlich gegen Begrenzungen der Walzstraße läuft, was zu erheblichen Betriebsstörungen führt.With these previously known methods and devices for correcting the roll gap shape, inaccuracies can only be compensated to a large extent because the longitudinal center line of the strip does not always coincide with the center of the rolling mill and the strip changes its position transversely to the center line of the rolling train. Occasionally, the fluctuations are so great that the strip runs laterally against the limits of the rolling mill, which leads to considerable operational disturbances.
Es ist die Aufgabe der Erfindung, die seitlichen, quer zur Bandlaufrichtung erfolgenden Schwankungen des Bandes erheblich zu vermindern und besonders schnell wirkende und genaue Korrekturmöglichkeiten des Dickenprofils durch Verändern des Walzspaltes zu schaffen.It is the object of the invention to considerably reduce the lateral fluctuations in the strip which run transversely to the strip running direction and to provide particularly fast-acting and precise possibilities for correcting the thickness profile by changing the roll gap.
Diese Aufgabe wird durch die Merkinalskombination des Patentanspruchs gelöst.This task is solved by the combination of the claims.
Eine genaue symmetrische Lage der Mitte des Bandes zur Mitte der Walzstraße wird am Einlauf der Walzstraße durch bekannte mechanische seitliche Führungen erreicht. Am Einlauf der Walzstraße kann das auszuwalzende Material, weil es noch sehr dick ist, seitlich gut geführt werden. Innerhalb der Walzstraße, die aus etwa 7 Walzgerüsten besteht, kann das Band nicht mehr durch seitliche Führungen geführt werden, da die auf das Band einwirkenden Kräfte sehr groß sind und das Band besonders bei den letzten Walzgerüsten bereits sehr flach gewalzt ist und somit eine Kante fehlt, die seitlich starke Kräfte aufnehmen kann.An exact symmetrical position of the middle of the strip to the middle of the rolling mill is achieved at the entry of the rolling mill by known mechanical lateral guides. At the inlet of the rolling mill, the material to be rolled out can be guided sideways because it is still very thick. The strip can no longer be guided through lateral guides within the rolling mill, which consists of around 7 roll stands, since the forces acting on the strip are very large and the strip has already been rolled very flat, particularly on the last roll stands, and an edge is therefore missing that can absorb strong forces laterally.
Es hat sich erwiesen, daß ein mittig in die Walzstraße einlaufendes Band diese auch symmetrisch zur Mitte wieder verlaßt, wenn alle Walzgerüste ohne jeglichen Fehler arbeiten. Dies ist jedoch in der Praxis nicht erreichbar. Wenn nur eine Walze an einer Seite geringfügig fester drückt als an der anderen Seite, so wird das Band an der Seite mit dem zu engen Walzspalt länger, so daß es leicht bogenförmig wird und mit seiner Mitte von der Mittellinie der Walzstraße abweicht. Solche Abweichungen können durch das Meßgeräte nach der DE-Ps 2633351 zum ermitteln der Spannungsverteilung quer zum Band frühzeitig festgestellt werden. Durch entsprechendes geringfügiges Schwenken einer Walze im nachfolgenden oder auch dem Meßgerät vorher folgenden Gerüst kann der Fehler wieder ausgeglichen werden.It has been found that a strip entering the rolling mill in the middle also leaves it symmetrically to the center when all the rolling stands are working without any errors. However, this cannot be achieved in practice. If only one roller presses slightly more firmly on one side than on the other side, the strip on the side with the narrow roll gap becomes longer so that it becomes slightly curved and deviates with its center from the center line of the rolling train. Such deviations can be determined at an early stage by the measuring devices according to DE-Ps 2633351 to determine the voltage distribution across the strip. The error can be compensated for again by correspondingly slightly pivoting a roller in the subsequent stand or the stand following the measuring device.
Das Meßgerät und die Schwenkeinrichtung der Walze sind ursprünglich zum Ausgleichen von nicht planem Band entwickelt worden. Im Zusammenhang mit einer gut ausgerichteten mechanischen Führung am Einlauf der Walzstraße hat sich überraschenderweise ergeben, daß das Meßgerät und die Schwenkeinrichtung zum genauen mittigen Führen des Bandes innerhalb der Walzstraße benutzbar sind. Eine genaue mittige Führung ist für alle nachfolgenden Korrekturvorrichtungen wichtig, weil diese in der Regel symmetrisch zur Mitte der Walzstraße wirken. Es ist zweckmäßig, wenn zum genauen mittigen Führen über der Länge der Walzstraße verteilt mehr als ein Meßgerät gekoppelt mit einer Walzenschwenkeinrichtung angebracht sind.The measuring device and the pivoting device of the roller were originally developed to compensate for non-flat strip. In connection with a well-aligned mechanical guide at the inlet of the rolling mill, it has surprisingly been found that the measuring device and the swiveling device can be used for guiding the strip precisely in the center of the rolling mill. Accurate central guidance is important for all subsequent correction devices, because these usually act symmetrically to the center of the rolling mill. It is expedient if more than one measuring device coupled to a roll swiveling device is attached for precise central guidance over the length of the rolling train.
Die Stellgrößen zur Korrektur des Walzpaltes werden in einem Computer, der auch den Vergleicher für die Meßwerte enthält, errechnet.The manipulated variables for correcting the roll gap are calculated in a computer, which also contains the comparator for the measured values.
Es ergeben nicht immer die gleichen Abweichungen in den Meßwerten die gleichen Stellgrößen. Der Computer berücksichtigt mit Hilfe eines eingegebenen geeigneten Programms bei der Errechnung der Stellgröße z.B. die Walzenabmessungen, die Walzmaterialbreite, die Walzenbombierung, die Walzkraft und die Temperatur des Bandes.The same deviations in the measured values do not always result in the same manipulated variables. With the help of a suitable program entered, the computer takes into account, for example, the calculation of the manipulated variable. the roll dimensions, the roll material width, the roll crowning, the rolling force and the temperature of the strip.
Ein Ausführungsbeispiel der Erfindung wird anhand der Fig. 1 und 2 beschrieben. In Fig. 1 ist die ganze Walzstraße in seitlicher Ansicht und in Fig. 2 ist der Anfangsteil der Walzstraße von oben gesehen dargestellt.An embodiment of the invention will be described with reference to FIGS. 1 and 2. 1 is the entire rolling mill in a side view and in Fig. 2 the beginning part of the rolling mill is seen from above.
Darin sind die Walzgerüste mit 11 bis 17 bezeichnet. Der Pfeil 18 kennzeichnet die Einlaufrichtung des Walzgutes 19. Dieses wird zunächst durch die Rollen 20 und 21 und durch die Gleitführungen 22 und 23 genau in der Mitte der Walzstraße vor das erste Gerüst 11 geführt. Wenn sich nach dem Durchlaufen der ersten 2 Gerüste 11 und 12 ein Fehler eingestellt hat, so wird dieser durch die Meßrollen 24 bis 30 des Meßgerätes 31 in der Form von unterschiedlichen Spannungen im Band festgestellt. Die Meßergebnisse werden im Computer 32 verglichen. Dieser errechnet eine Stellgröße, die auf eine Steuerung mit z.B. hydraulischem Verstellbetrieb 33 auf die obere Walze des Walzgerüstes 12 einwirkt, wodurch diese Walze um ihre Mitte etwas geschwenkt wird. An dieser Stelle kann auch eine Meßvorrichtung ausreichend sein, die nur Signale von zwei Meßwertgebern anstelle der Rolle 24 und 30 gibt.The roll stands are designated 11 to 17. The
Zwischen den Walzgerüsten 13 und 14 ist nochmals eine baugleiche Meßvorrichtung zur Korrektur der Mittenlage des Bandes 19 eingebaut. Vor dem letzten Walzgerüst 17, hinter dem der nicht gezeichnete Haspel kommt, ist ein mit den Meßrollen 24 bis 30 baugleicher Satz Meßrollen installiert, von denen die äußere mit 34 bezeichnet ist. Diese Meßrollen geben ihre Werte über das Meßgerät 35 an den Computer 36. Dieser errechnet u.a. eine Stellgröße für die Steuerung der hydraulischen Walzenbiegeeinrichtung 37, die auf die obere Walze des Walzgerüstes 16 einwirkt.A structurally identical measuring device for correcting the central position of the
Eine baugleiche Anordnung kann ebenso zwischen den Gerüsten 15 und 16 angeorndet sein, die auf die Stellglieder des Gerüstes 15 einwirken.An identical arrangement can also be arranged between the
Weiterhin ist ein Computer 38 installiert, in den die Walzdaten der drei letzten Gerüste 15, 16, 17, insbesondere die Walzkräftedaten von den Kraftmessern 39, 40 und 41 eingehen. Dieser Computer errechnet eine Stellgröße für die Steuerung der hydraulischen Walzenbiegeeinrichtung 42, die im Gerüst 17 angeordnet ist.A computer 38 is also installed, into which the rolling data of the last three stands 15, 16, 17, in particular the rolling force data from the
Als Beispiel der vom Computer 38 zu errechnenden Werte sind in Figur 3 Kurven wiedergegeben, die den Zusammenhang der Walzkraft im Gerüst 17, der Balligkeit der Arbeitswalzen, der Breite des gewalzten Bandes 19 mit der zu errechnenden Walzenbiegewerteinstellung darstellt.As an example of the values to be calculated by the computer 38, curves are shown in FIG. 3, which represent the relationship between the rolling force in the
Die zwischen 800 und 1.600 liegenden Werte an den Geraden stellen die Bandbreiten dar.The values between 800 and 1,600 on the straight lines represent the bandwidths.
Claims (1)
- Rolling mill with at least one stand (11 to 16) with a measuring device (31) for measuring the stress across the width of the hot roll strip and with a measured value comparator (32) which controls a roll swivelling mechanism (33) to compensate for the stress and controls a roll bending mechanism (37) at deviations of predetermined reference values, characterised in that the rolling mill is a hot strip rolling mill with multiple rolling stands (11 to 17), where the roll swivelling mechanism (33) is built into a rolling stand (12), which is located upstream of the rolling stand with the roll deflecting mechanism in the direction of roll and that a roll swivelling mechanism (33) with associated measuring device is in each case installed in several rolling stands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85107045T ATE55292T1 (en) | 1984-09-26 | 1985-06-07 | METHOD AND DEVICE FOR CORRECTING THE THICKNESS PROFILE OF THE STRIP TO BE ROLLED IN A MULTI-STAND HOT STRIP MILL. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3435232 | 1984-09-26 | ||
| DE19843435232 DE3435232A1 (en) | 1984-09-26 | 1984-09-26 | METHOD AND DEVICE FOR CORRECTING THE THICKNESS PROFILE OF THE STRIP TO BE ROLLED ON A MULTIPLE-STANDARD HOT-ROLLING ROLL MILL |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0175844A2 EP0175844A2 (en) | 1986-04-02 |
| EP0175844A3 EP0175844A3 (en) | 1987-01-14 |
| EP0175844B1 true EP0175844B1 (en) | 1990-08-08 |
Family
ID=6246357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85107045A Expired - Lifetime EP0175844B1 (en) | 1984-09-26 | 1985-06-07 | Method and device for correcting the thickness profile of a hot rolled strip in a multiple-stand rolling mill |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4674309A (en) |
| EP (1) | EP0175844B1 (en) |
| JP (1) | JPS6182916A (en) |
| AT (1) | ATE55292T1 (en) |
| DE (2) | DE3435232A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5231858A (en) * | 1990-11-30 | 1993-08-03 | Kawasaki Steel Corporation | Method of controlling edge drop in cold rolling of steel |
| US5722279A (en) * | 1993-09-14 | 1998-03-03 | Nippon Steel Corporation | Control method of strip travel and tandem strip rolling mill |
| DE10045259A1 (en) * | 2000-09-13 | 2002-03-21 | Sms Demag Ag | Control method for rolling a strip in a roll stand |
| BRPI0707959A2 (en) * | 2006-02-17 | 2011-05-17 | Alcoa Inc | induction heating to control sheet metal planing |
| EP2527052A1 (en) | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Operating method for a mill train |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1427930B2 (en) * | 1963-03-28 | 1974-01-17 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Device for strip thickness control in multi-stand rolling mills |
| US3531961A (en) * | 1968-03-13 | 1970-10-06 | Westinghouse Electric Corp | Method and system for controlling strip thickness in a tandem reduction mill |
| DE1752959C3 (en) * | 1968-08-13 | 1974-10-03 | Gesellschaft Zur Foerderung Der Eisenhuettentechnik Mbh, 4000 Duesseldorf | Device for avoiding flatness deviations on cold-rolled metal strip during rolling under longitudinal tension |
| US3613417A (en) * | 1970-02-09 | 1971-10-19 | Aluminum Co Of America | Procedure for controlling a multistand rolling mill |
| US3803886A (en) * | 1972-05-10 | 1974-04-16 | Westinghouse Electric Corp | System and method for controlling gauge and crown in a plate rolling mill |
| JPS5225824B2 (en) * | 1972-10-16 | 1977-07-09 | ||
| JPS5118252A (en) * | 1974-08-06 | 1976-02-13 | Nippon Kokan Kk | Atsuenkinzokubanno choryokubunpunyoru keijoseigyoho |
| DE2554246A1 (en) * | 1975-12-03 | 1977-06-16 | Achenbach Buschhuetten Gmbh | METHOD AND DEVICE FOR REGULATING FLATNESS WHEN ROLLING STRIP MATERIAL |
| CH604940A5 (en) * | 1975-12-08 | 1978-09-15 | Escher Wyss Ag | |
| DE2633351C2 (en) * | 1976-07-24 | 1983-11-17 | Hoesch Werke Ag, 4600 Dortmund | Device for measuring the flatness of metal strips |
| JPS5949083B2 (en) * | 1976-12-20 | 1984-11-30 | 新日本製鐵株式会社 | Steel plate continuous rolling equipment |
| JPS5467550A (en) * | 1977-11-09 | 1979-05-31 | Mitsubishi Electric Corp | Shape control of rolled material |
| US4262511A (en) * | 1978-09-08 | 1981-04-21 | Reycan Research Limited | Process for automatically controlling the shape of sheet metal produced in a rolling mill |
| JPS57209708A (en) * | 1981-06-19 | 1982-12-23 | Toshiba Corp | Snaking preventing device for rolling material |
-
1984
- 1984-09-26 DE DE19843435232 patent/DE3435232A1/en active Granted
-
1985
- 1985-06-07 EP EP85107045A patent/EP0175844B1/en not_active Expired - Lifetime
- 1985-06-07 AT AT85107045T patent/ATE55292T1/en not_active IP Right Cessation
- 1985-06-07 DE DE8585107045T patent/DE3579084D1/en not_active Expired - Fee Related
- 1985-09-11 US US06/774,819 patent/US4674309A/en not_active Expired - Fee Related
- 1985-09-26 JP JP60211222A patent/JPS6182916A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3435232A1 (en) | 1986-04-17 |
| EP0175844A2 (en) | 1986-04-02 |
| DE3579084D1 (en) | 1990-09-13 |
| EP0175844A3 (en) | 1987-01-14 |
| US4674309A (en) | 1987-06-23 |
| JPS6182916A (en) | 1986-04-26 |
| ATE55292T1 (en) | 1990-08-15 |
| DE3435232C2 (en) | 1987-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3116278C2 (en) | ||
| EP1896200B1 (en) | Process and device for intentionally influencing the geometry of roughed-down strips in a roughing-down stand | |
| DE3115461C2 (en) | ||
| EP1278606B1 (en) | Method and device for reeling up in the proper position a hot-rolled strip in a reeling installation | |
| WO2013135688A1 (en) | Apparatus for straightening metal strip | |
| DE19520541A1 (en) | Method and device for correcting rolled metal strips, which are bent horizontally in the strip plane, in particular metal strips with a strip thickness of 0.5 mm to 2.0 mm | |
| EP0166981A1 (en) | Position control device for sideguides or guide rollers that are arranged shiftable at right angles to the direction of rolling before hot strip finishing rolling mills | |
| EP0972581B1 (en) | Rolling method for bar-shaped rolling stock, in particular steel bars and wire | |
| EP0175844B1 (en) | Method and device for correcting the thickness profile of a hot rolled strip in a multiple-stand rolling mill | |
| DE3517475C2 (en) | ||
| DE3430034A1 (en) | PLANNING REGULATION ON ROLLING MILLS | |
| DE1402710A1 (en) | Loop lifter | |
| DE3434284A1 (en) | CONTROL SYSTEM FOR A TANDEM ROLLING MILL | |
| DE2836595C2 (en) | Device for regulating the thickness of the rolled strip in a tandem rolling mill | |
| DE19524729A1 (en) | Method and device for rolling strips with a non-uniform thickness and / or length distribution across their width | |
| DE2747331C2 (en) | Device for adjusting support rollers | |
| EP0734795B1 (en) | Method for feedforward thickness control in rolling of foils | |
| DE1301295B (en) | Method and device for changing the tension distribution over the strip width when rolling strip under tension | |
| DE2302472A1 (en) | METHOD AND DEVICE FOR MONITORING AND REGULATING THE BAND TENSION | |
| DE3245031C2 (en) | ||
| DE3900960A1 (en) | DEVICE FOR LENGTHING A TAPE AND WINDING THE STRIPS OF THE TITLED TAPE | |
| WO1998034741A1 (en) | Method and device for setting the advancement of a rolled strip | |
| DE10159608B9 (en) | Rolling process and rolling train for a band with a weld | |
| DE1602168A1 (en) | Method and device for regulating rolling stock to a constant cross-section | |
| DE3837101A1 (en) | Method for controlling the running of the strip during rolling in a mill train |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE DE FR IT NL SE |
|
| TCNL | Nl: translation of patent claims filed | ||
| EL | Fr: translation of claims filed | ||
| ITCL | It: translation for ep claims filed |
Representative=s name: RICCARDI SERGIO & CO. |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE DE FR IT NL SE |
|
| 17P | Request for examination filed |
Effective date: 19870613 |
|
| 17Q | First examination report despatched |
Effective date: 19890125 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE FR IT NL SE |
|
| REF | Corresponds to: |
Ref document number: 55292 Country of ref document: AT Date of ref document: 19900815 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 3579084 Country of ref document: DE Date of ref document: 19900913 |
|
| ET | Fr: translation filed | ||
| ITF | It: translation for a ep patent filed |
Owner name: UFFICIO BREVETTI RICCARDI & C. |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19910513 Year of fee payment: 7 Ref country code: AT Payment date: 19910513 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19910521 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19910528 Year of fee payment: 7 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| ITTA | It: last paid annual fee | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19910630 Year of fee payment: 7 |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19920607 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19920608 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19920630 |
|
| BERE | Be: lapsed |
Owner name: HOESCH STAHL A.G. Effective date: 19920630 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19930101 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19930226 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| EUG | Se: european patent has lapsed |
Ref document number: 85107045.8 Effective date: 19930109 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990525 Year of fee payment: 15 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010403 |