EP0795629B1 - Apparatus for strip surface treatment with liquids - Google Patents
Apparatus for strip surface treatment with liquids Download PDFInfo
- Publication number
- EP0795629B1 EP0795629B1 EP97101302A EP97101302A EP0795629B1 EP 0795629 B1 EP0795629 B1 EP 0795629B1 EP 97101302 A EP97101302 A EP 97101302A EP 97101302 A EP97101302 A EP 97101302A EP 0795629 B1 EP0795629 B1 EP 0795629B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- panel
- tank
- pickling
- pickle
- strip
- 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
- 239000007788 liquid Substances 0.000 title description 13
- 238000004381 surface treatment Methods 0.000 title 1
- 238000005554 pickling Methods 0.000 claims description 55
- 230000000694 effects Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 2
- 235000021110 pickles Nutrition 0.000 claims 9
- 238000010992 reflux Methods 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping
Definitions
- the invention relates to a device for pickling metal strips in one trough-shaped containers, one above the belt in the pickling medium, immersed plate is arranged and the free surface of the pickling medium extends over the entire surface of the container.
- the mean bath depth can, however, be with a free surface of the treatment bath only to a lower one, determined by the maximum belt speed Limit to be lowered. Due to the drag effect of the moving Band is the treatment medium in the treatment bath in the direction of Band movement carried away. An inclined liquid level is created with correspondingly excessive bath depth at the exit of the strip from the treatment bath and correspondingly lowered bath depth at the entrance of the band in the treatment bath. At higher speeds (e.g. at 200 mm average bath depth and 20 m bath length above approx. 200 m / min belt speed) an empty pump occurs in the area of the entry of the belt into the Treatment bath so that the immersion length of the tape in the treatment medium shortened accordingly and thus the length of the treatment bath is no longer fully used. The middle bathroom mirror must therefore be avoided pumping can be raised. The performance limit of a Treatment bath with a free surface is therefore by the optimum between shortening of the pickling bath due to drag effect and reduced pickling effect given by greater mean bath depth.
- a known measure for achieving a low average bath depth high speeds is the formation of a closed treatment channel.
- the bath depth is therefore at the level of the treatment channel fixed.
- the Leaving the band from the treatment channel using methods such as in EP 0 655 519 A1 against the dynamic pressure of the drag effect be hydrodynamically sealed.
- the hydrodynamic seal requires a considerable amount of energy compared to treatment baths must also be applied with a free surface.
- the required supply of fresh treatment medium at the strip outlet is difficult and associated with high energy consumption.
- DE 41 08 516 describes e.g. a high speed pickling process and a corresponding device.
- a channel is provided, i.e. the band is enclosed on all sides.
- FR 2 721 also describes 235 a pickling plant, in which the strip is deflected by deflecting the strip several layers are passed through the pickling bath, one at a time a plate is arranged above a band length and these plates with the Sidewalls form channels through which the tape is guided.
- the pickling acid is injected into the channels at both ends of the separating plates.
- the purpose of the present invention is to limit the performance of a treatment bath improve with free surface, so the disadvantages of a closed treatment channel can be avoided.
- the invention is characterized in that the plate only above the Ribbon arranged and aligned approximately parallel to the ribbon, from a Side wall of the container to the other side wall of the container and the pickling bath in a treatment area below the plate, which is completed by the bottom of the container is, and a reflux area for the pickling medium, above the Plate, with free surface of the pickling medium, divides.
- This causes in Treatment tank an improved backflow of the accumulated pickling medium from the area of the tape outlet to the tape inlet, so that the The accumulation level in the area of the belt outlet is reduced and therefore the average Bath depth can be reduced.
- Another advantage of the proposed facility is that with the plate according to the invention a treatment channel shallow bath depth is formed, while the free surface of the Treatment medium is retained and the drag effect of the tape for targeted circulation and mixing of the pickling medium in the pickling tank is being used.
- An advantageous development of the invention is characterized in that the plate consists of several individual plates arranged one after the other. This is particularly advantageous for longer pickling tanks.
- a further development of the invention is characterized in that between the plates passage gaps are left through which the pickling medium from lower treatment area to the upper reflux area and vice versa can flow.
- the pickling medium is circulated in Parts of the pickling tank are reached, and on the other hand the pickling medium flows better when emptying the pickling tank.
- the plate contains openings through which the pickling medium between the lower treatment area and the upper reflux area can circulate.
- a particularly favorable effect is achieved when the plate is almost flat extends over the entire length of the pickling tank, and only at the beginning and End of the container passages between the plate and the container wall or are present in the plate through which the pickling medium from the bottom Flow the treatment area into the upper reflux area and vice versa can. So the pickling medium is completely from the area of the belt outlet headed to the area of the belt inlet.
- a particularly favorable effect is achieved if the plate has a cross-section V-shaped, which makes flat contact with flat bands can be avoided and the drainage of the pickling medium when emptying is improved.
- a particularly favorable effect is achieved if the plate on the Band facing side is provided with cross ribs, which on the one hand Decelerate the flow by dragging and increase it on the other Cause turbulence in the treatment room.
- the separation into a treatment area and a reflux area can be used advantageously for a targeted supply of fresh pickling medium which the pickling medium is fed to the sides of the container through inlets and introduced into the treatment room below the plate by the action of a nozzle or that the pickling medium below the belt through the bottom of the container is supplied.
- the injection is preferably carried out in the area of the belt inlet, so that the freshly supplied pickling medium first on Belt is passed along before it over the reflux area formed by the plate recirculated in the pickling tank.
- a particularly favorable design of the injection results if this in Angle is directed against the direction of movement of the belt. This is causing a reduction in the drag effect of the belt and therefore causes a further reduction of the accumulation height in the area of the belt outlet.
- An advantageous embodiment of the device according to the invention results if the plate is attached to the lid of the pickling tank and when opening the Lid of this is lifted up with the plate preferably move upwards within certain limits can, in order to avoid collisions with the belt.
- FIG. 2 a Section through the pickling section shown in Fig. 1
- Fig. 3 is a plan view 1 shows a pickling section
- FIG. 4 shows a variant of the top view
- FIG. 5 a variant of the cross section of the pickling section shown in Fig. 1
- Fig. 6 shows a variant of the plate with transverse ribs.
- the system is shown in a highly simplified manner in order to explain the principle can.
- Fig. 1 shows the exemplary scheme of a pickling section with the associated Pipelines, pumps, heat exchangers and the circulation tank. That too treating belt 1 is guided over squeeze rollers 2 into the pickling section, dips into the liquid bath 3 and becomes at the other end of the pickling section led out of the pickling section by the squeeze rollers 4.
- the Treatment liquid 5 is from the circulation container 6 via the Pipelines 7, the pump 8 and the heat exchanger 9 through the inlets 10 in the bottom and inlets 11 in the side wall into the liquid bath 3 fed and over the overflow stones 12a at the inlet and 12b at the outlet of the Pickling section derived in collecting vessels 13a, 13b and from there on Pipelines 14a, 14b returned to the circulation tank 6.
- the Inlets 10 in the floor are directed obliquely against the tape running direction 15 to counteract the flow due to the drag effect of the belt 1.
- the plate 16 according to the invention is in the liquid bath 3 in the Design variant of a continuous plate arranged. Arrows 17 reinterpret the flow caused by the drag effect of belt 1 the plate 16.
- Fig. 2 shows a section A-A through the pickling section shown in Fig. 1.
- the Liquid level is marked with 18.
- the inlets 11 in the Side wall are arranged so that the treatment liquid 5 in the room flows between the plate 16 and the tape 1.
- the plate 16 is with the Brackets 19 attached to the cover 20 and is on the side Support stones 21 on.
- Fig. 3 shows a plan view of the pickling section shown in Fig. 1, the Cover of the pickling section and the tape in the area of the liquid bath 3 are not are shown.
- the plate 22 is in this embodiment variant shown a perforated plate.
- the inlets 11 are in the side wall directed obliquely against the tape running direction 15 to the flow due to the To counteract the drag effect of the tape 1.
- FIG. 4 shows, like FIG. 3, the top view of the pickling section shown in FIG. 1, but with the variant of an interrupted plate 23.
- FIG. 5 shows, like FIG. 2, the section A-A through that shown in FIG. 1 Pickling section, but with the design variant of a V-shaped plate 24.
- Fig. 6 shows a section of the pickling section with the tape 1, the Squeeze rollers 4 and the plate 16.
- the plate 16 here has transverse ribs 25 where the flow is slowed down, which increases Turbulence and thus improved pickling results.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Electroplating Methods And Accessories (AREA)
- Manufacturing Of Printed Wiring (AREA)
- ing And Chemical Polishing (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Beizen von Metallbändern in einem rinnenförmigen Behälter, wobei oberhalb des Bandes eine in das Beizmedium, eingetauchte Platte angeordnet ist und die freie Oberfläche des Beizmediums sich über die ganze Oberfläche des Behälters erstreckt.The invention relates to a device for pickling metal strips in one trough-shaped containers, one above the belt in the pickling medium, immersed plate is arranged and the free surface of the pickling medium extends over the entire surface of the container.
Nach dem Stand der Technik sind solche Bandbehandlungsanlagen, wie z.B. Beizen, mit Flüssigkeitsbädern mit ca. 100 mm bis 200 mm Badtiefe und üblicherweise 10 m bis ca. 40 m Länge je Einzelbad ausgeführt. Da die Reaktionsgeschwindigkeit des Behandlungsmediums an der Bandoberfläche des zu behandelnden bandförmigen Guts durch eine Verringerung der Flüssigkeitsgrenzschicht auf der Bandoberfläche positiv beeinflußt wird, besteht die Tendenz zu immer geringeren Badtiefen, wodurch aufgrund der höheren Reynoldszahl eine höhere Badturbulenz und aufgrund höherer Scherwirkung eine Verringerung der Flüssigkeitsgrenzschicht eintritt.According to the prior art, such belt treatment plants, such as Pickling, with liquid baths with a bath depth of approx. 100 mm to 200 mm and usually 10 m to approx. 40 m in length per single bath. Since the Reaction speed of the treatment medium on the belt surface of the band-shaped material to be treated by reducing the liquid boundary layer is positively influenced on the belt surface, there is Tendency towards ever lower bath depths, due to the higher Reynolds number a higher bath turbulence and due to higher shear a decrease in the liquid boundary layer occurs.
Die mittlere Badtiefe kann jedoch bei freier Oberfläche des Behandlungsbades nur bis zu einer unteren, durch die maximale Bandgeschwindigkeit bestimmte Grenze, abgesenkt werden. Aufgrund der Schleppwirkung des bewegten Bandes wird das Behandlungsmedium im Behandlungsbad in Richtung der Bandbewegung mitgerissen. Es entsteht ein geneigter Flüssigkeitsspiegel mit entsprechend überhöhter Badtiefe am Austritt des Bandes aus dem Behandlungsbad und entsprechend abgesenkter Badtiefe am Eintritt des Bandes in das Behandlungsbad. Bei höheren Geschwindigkeiten (z.B. bei 200 mm mittlerer Badtiefe und 20 m Badlänge oberhalb ca. 200 m/min Bandgeschwindigkeit) tritt ein Leerpumpen im Bereich des Eintritts des Bandes in das Behandlungsbad ein, so daß die Eintauchlänge des Bandes im Behandlungsmedium entsprechend verkürzt und somit die Länge des Behandlungsbades nicht mehr voll ausgenutzt wird. Der mittlere Badspiegel muß daher zur Vermeidung des Leerpumpens angehoben werden. Die Leistungsgrenze eines Behandlungsbades mit freier Oberfläche ist daher durch das Optimum zwischen Beizbadverkürzung durch Schleppwirkung und verringerter Beizwirkung durch größere mittlere Badtiefe gegeben.The mean bath depth can, however, be with a free surface of the treatment bath only to a lower one, determined by the maximum belt speed Limit to be lowered. Due to the drag effect of the moving Band is the treatment medium in the treatment bath in the direction of Band movement carried away. An inclined liquid level is created with correspondingly excessive bath depth at the exit of the strip from the treatment bath and correspondingly lowered bath depth at the entrance of the band in the treatment bath. At higher speeds (e.g. at 200 mm average bath depth and 20 m bath length above approx. 200 m / min belt speed) an empty pump occurs in the area of the entry of the belt into the Treatment bath so that the immersion length of the tape in the treatment medium shortened accordingly and thus the length of the treatment bath is no longer fully used. The middle bathroom mirror must therefore be avoided pumping can be raised. The performance limit of a Treatment bath with a free surface is therefore by the optimum between shortening of the pickling bath due to drag effect and reduced pickling effect given by greater mean bath depth.
Eine bekannte Maßnahme zur Erzielung einer geringen mittleren Badtiefe bei
hohen Geschwindigkeiten ist die Ausbildung eines geschlossenen Behandlungskanals.
Die Badtiefe ist dadurch auf die Höhe des Behandlungkanals
fixiert. Um ein Leerpumpen des Behandlungskanals zu verhindern, muß der
Austritt des Bandes aus dem Behandlungskanal mit Verfahren, wie z.B. in
EP 0 655 519 A1 beschrieben, gegen den Staudruck der Schleppwirkung
hydrodynamisch abgedichtet werden. Die hydrodynamische Abdichtung erfordert
einen erheblichen Energieaufwand, der im Vergleich zu Behandlungsbädern
mit freier Oberfläche zusätzlich aufgebracht werden muß. Zusätzlich ist
aufgrund des hohen Staudrucks durch die Abdichtung des Behandlungskanals
am Bandaustritt die erforderliche Zufuhr frischen Behandlungsmediums erschwert
und mit hohem Energieaufwand verbunden.A known measure for achieving a low average bath depth
high speeds is the formation of a closed treatment channel.
The bath depth is therefore at the level of the treatment channel
fixed. To prevent the treatment channel from being emptied, the
Leaving the band from the treatment channel using methods such as in
Die Ausbildung eines geschlossenen Kanals verringert die Verdampfung des Behandlungsmediums und bewirkt daher eine Verringerung des Energiebedarfs zur Aufrechterhaltung der Behandlungstemperatur. Dieses ist jedoch insbesondere bei Beizanlagen, die in Zusatzeinrichtungen die Säure durch Wärmezersetzung wieder rückgewinnen, nicht von Vorteil, da die nicht im Behandlungsbehälter verdampfte Flüssigkeitsmenge den Energiebedarf der Rückgewinnung entsprechend erhöht.The formation of a closed channel reduces the evaporation of the Treatment medium and therefore causes a reduction in energy consumption to maintain the treatment temperature. However, this is special in pickling plants, which in additional devices, the acid by heat decomposition Recover again, not an advantage, because they are not in the treatment tank evaporated amount of liquid the energy requirement of recovery increased accordingly.
Die DE 41 08 516 beschreibt z.B. ein Hochgeschwindigkeits- Beizverfahren und eine entsprechende Vorrichtung. Hier ist für die Bandführung im Beizbereich ein Kanal vorgesehen, d.h. das Band ist allseitig umschlossen. Weiters beschreibt die FR 2 721 235 eine Beizanlage, bei der durch Umlenkung des Bandes das Band in mehreren Lagen übereinander durch das Beizbad geführt wird, wobei jeweils oberhalb einer Bandlänge eine Platte angeordnet ist und diese Platten mit den Seitenwänden Kanäle bilden, durch die das Band geführt wird. Auch hier kann von praktisch geschlossenen Kanälen gesprochen werden, wobei die Beizsäure an beiden Enden der Trennplatten in die Kanäle eingedüst wird.DE 41 08 516 describes e.g. a high speed pickling process and a corresponding device. Here is for the tape guide in the pickling area a channel is provided, i.e. the band is enclosed on all sides. FR 2 721 also describes 235 a pickling plant, in which the strip is deflected by deflecting the strip several layers are passed through the pickling bath, one at a time a plate is arranged above a band length and these plates with the Sidewalls form channels through which the tape is guided. Here too can be spoken of practically closed channels, the pickling acid is injected into the channels at both ends of the separating plates.
Zweck der vorliegenden Erfindung ist es, die Leistungsgrenze eines Behandlungsbades mit freier Oberfläche zu verbessern, so daß die Nachteile eines geschlossenen Behandlungskanals vermieden werden.The purpose of the present invention is to limit the performance of a treatment bath improve with free surface, so the disadvantages of a closed treatment channel can be avoided.
Der Erfindung ist dadurch gekennzeichnet, daß die Platte lediglich oberhalb des Bandes angeordnet und ungefähr parallel zum Band ausgerichtet ist, von einer Behälterseitenwand zur anderen Behälterseitenwand reicht und das Beizbad in einen Behandlungsbereich unterhalb der Platte, der vom Behälterboden abgeschlossen wird, und einen Rückflußbereich für das Beizmedium, oberhalb der Platte, mit freier Oberfläche des Beizmediums, teilt. Dies bewirkt im Behandlungsbehälter einen verbesserten Rückfluß des aufgestauten Beizmediums vom Bereich des Bandauslaufes zum Bandeinlauf hin, so daß die Stauhöhe im Bereich des Bandauslaufes verringert wird und daher die mittlere Badtiefe verringert werden kann. Ein weiterer Vorteil der vorgeschlagenen Einrichtung ist, daß durch die erfindungsgemäße Platte ein Behandlungskanal mit geringer Badtiefe gebildet wird, wobei gleichzeitig die freie Oberfläche des Behandlungsmediums erhalten bleibt und die Schleppwirkung des Bandes für eine gezielte Umwälzung und Durchmischung des Beizmediums im Beizbehälter genutzt wird.The invention is characterized in that the plate only above the Ribbon arranged and aligned approximately parallel to the ribbon, from a Side wall of the container to the other side wall of the container and the pickling bath in a treatment area below the plate, which is completed by the bottom of the container is, and a reflux area for the pickling medium, above the Plate, with free surface of the pickling medium, divides. This causes in Treatment tank an improved backflow of the accumulated pickling medium from the area of the tape outlet to the tape inlet, so that the The accumulation level in the area of the belt outlet is reduced and therefore the average Bath depth can be reduced. Another advantage of the proposed facility is that with the plate according to the invention a treatment channel shallow bath depth is formed, while the free surface of the Treatment medium is retained and the drag effect of the tape for targeted circulation and mixing of the pickling medium in the pickling tank is being used.
Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß die Platte aus mehreren nacheinander angeordneten Einzelplatten besteht. Dies ist insbesondere bei längeren Beizbehältern von Vorteil. An advantageous development of the invention is characterized in that the plate consists of several individual plates arranged one after the other. This is particularly advantageous for longer pickling tanks.
Eine Weiterbildung der Erfindung ist gekennzeichnet dadurch, daß zwischen den Platten Durchlaßspalte belassen werden, durch die das Beizmedium vom unteren Behandlungsbereich in den oberen Rückflußbereich und umgekehrt fließen kann. Hierdurch wird zum einen eine Umwälzung des Beizmediums in Teilbereichen des Beizbehälters erreicht, zum anderen fließt das Beizmedium beim Entleeren des Beizbehälters besser ab. Der gleiche Effekt kann dadurch erreicht werden, daß die Platte Öffnungen enthält, durch die das Beizmedium zwischen dem unteren Behandlungsbereich und dem oberen Rückflußbereich zirkulieren kann.A further development of the invention is characterized in that between the plates passage gaps are left through which the pickling medium from lower treatment area to the upper reflux area and vice versa can flow. As a result, the pickling medium is circulated in Parts of the pickling tank are reached, and on the other hand the pickling medium flows better when emptying the pickling tank. This can have the same effect achieved that the plate contains openings through which the pickling medium between the lower treatment area and the upper reflux area can circulate.
Eine besonders günstige Wirkung wird erreicht, wenn die Platte sich nahezu über die gesamte Länge des Beizbehälters erstreckt, und nur am Anfang und Ende des Behälters Durchlässe zwischen der Platte und der Behälterwand oder in der Platte vorhanden sind, durch die das Beizmedium vom unteren Behandlungsbereich in den oberen Rückflußbereich und umgekehrt fließen kann. So wird das Beizmedium vollständig vom Bereich des Bandauslaufes hin zum Bereich des Bandeinlaufes geleitet.A particularly favorable effect is achieved when the plate is almost flat extends over the entire length of the pickling tank, and only at the beginning and End of the container passages between the plate and the container wall or are present in the plate through which the pickling medium from the bottom Flow the treatment area into the upper reflux area and vice versa can. So the pickling medium is completely from the area of the belt outlet headed to the area of the belt inlet.
Eine besonders günstige Wirkung wird erreicht, wenn die Platte im Querschnitt V - förmig ausgebildet ist, wodurch flächige Berührung mit ebenen Bändern vermieden werden kann und das Abfließen des Beizmediums beim Entleeren verbessert wird.A particularly favorable effect is achieved if the plate has a cross-section V-shaped, which makes flat contact with flat bands can be avoided and the drainage of the pickling medium when emptying is improved.
Eine besonders günstige Wirkung wird erreicht, wenn die Platte an der dem Band zugewandten Seite mit Querrippen versehen ist, die zum einen die Strömung durch Schleppwirkung abbremsen und zum anderen erhöhte Turbulenz im Behandlungsraum bewirken.A particularly favorable effect is achieved if the plate on the Band facing side is provided with cross ribs, which on the one hand Decelerate the flow by dragging and increase it on the other Cause turbulence in the treatment room.
Die Trennung in einen Behandlungsbereich und einen Rückflußbereich kann vorteilhaft für eine gezielte Zuführung frischen Beizmediums genutzt werden, in dem das Beizmedium an den Seiten des Behälters durch Einlässe zugeführt und durch Düsenwirkung in den Behandlungsraum unterhalb der Platte eingebracht wird bzw. daß das Beizmedium unterhalb des Bandes durch den Boden des Behälters zugeführt wird. Die Eindüsung erfolgt vorzugsweise im Bereich des Bandeinlaufes, so daß das frisch zugeführte Beizmedium zunächst am Band entlang geführt wird, bevor es über den durch die Platte gebildeten Rückflußbereich im Beizbehälter rückzirkuliert.The separation into a treatment area and a reflux area can can be used advantageously for a targeted supply of fresh pickling medium which the pickling medium is fed to the sides of the container through inlets and introduced into the treatment room below the plate by the action of a nozzle or that the pickling medium below the belt through the bottom of the container is supplied. The injection is preferably carried out in the area of the belt inlet, so that the freshly supplied pickling medium first on Belt is passed along before it over the reflux area formed by the plate recirculated in the pickling tank.
Eine besonders günstige Gestaltung der Eindüsung ergibt sich, wenn diese im Winkel gegen die Bewegungsrichtung des Bandes gerichtet ist. Dies verursacht eine Verringerung der Schleppwirkung des Bandes und bewirkt daher eine weitere Verringerung der Aufstauhöhe im Bereich des Bandauslaufes.A particularly favorable design of the injection results if this in Angle is directed against the direction of movement of the belt. This is causing a reduction in the drag effect of the belt and therefore causes a further reduction of the accumulation height in the area of the belt outlet.
Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Vorrichtung ergibt sich, wenn die Platte am Deckel des Beizbehälters befestigt ist und beim Öffnen des Deckels von diesem mit angehoben wird, wobei die Platte vorzugsweise in der Befestigung in gewissen Grenzen nach oben ausweichen kann, um bei Kollisionen mit dem Band ausweichen zu können.An advantageous embodiment of the device according to the invention results if the plate is attached to the lid of the pickling tank and when opening the Lid of this is lifted up with the plate preferably move upwards within certain limits can, in order to avoid collisions with the belt.
Im folgenden wird die Erfindung anhand von Zeichnungen beispielhaft
beschrieben, wobei Fig. 1 eine Beizsektion gemäß der Erfindung, Fig. 2 einen
Schnitt durch die in Fig. 1 dargestellte Beizsektion, Fig. 3 eine Draufsicht auf
die in Fig. 1 dargestellte Beizsektion, Fig. 4 eine Variante der Draufsicht, Fig. 5
eine Variante des Querschnittes der in Fig. 1 dargestellten Beizsektion und Fig.
6 eine Variante der Platte mit Querrippen darstellt. In den Zeichnungsfiguren ist
die Anlage jeweils stark vereinfacht dargestellt, um das Prinzip erläutern zu
können.In the following the invention will be exemplified with reference to
Fig. 1 zeigt das beispielhafte Schema einer Beizsektion mit den dazugehörigen
Rohrleitungen, Pumpen, Wärmetauscher und dem Kreislauftank. Das zu
behandelnde Band 1 wird über Abquetschwalzen 2 in die Beizsektion geführt,
taucht in das Flüssigkeitsbad 3 ein und wird am anderen Ende der Beizsektion
durch die Abquetschwalzen 4 wieder aus der Beizsektion herausgeführt. Die
Behandlungsflüssigkeit 5 wird aus dem Kreislaufbehälter 6 über die
Rohrleitungen 7, die Pumpe 8 und den Wärmetauscher 9 durch die Einlässe 10
im Boden und Einlässe 11 in der Seitenwand in das Flüssigkeitsbad 3
zugeführt und über die Überlaufsteine 12a am Einlauf und 12b am Auslauf der
Beizsektion in Auffanggefäße 13a, 13b abgeleitet und von dort aus über die
Rohrleitungen 14a, 14b in den Kreislaufbehälter 6 zurückgeführt. Die
Einlässe 10 im Boden sind schräg gegen die Bandlaufrichtung 15 gerichtet, um
der Strömung aufgrund der Schleppwirkung des Bandes 1 entgegenzuwirken.
Im Flüssigkeitsbad 3 ist die erfindungsgemäße Platte 16 in der
Ausführungsvariante einer durchgehenden Platte angeordnet. Die Pfeile 17
deuten die durch die Schleppwirkung des Bandes 1 verursachte Strömung um
die Platte 16 an.Fig. 1 shows the exemplary scheme of a pickling section with the associated
Pipelines, pumps, heat exchangers and the circulation tank. That too
treating
Fig. 2 zeigt einen Schnitt A-A durch die in Fig. 1 dargestellte Beizsektion. Das
Flüssigkeitsniveau ist mit 18 gekennzeichnet. Die Einlässe 11 in der
Seitenwand sind so angeordnet, daß die Behandlungsflüssigkeit 5 in den Raum
zwischen der Platte 16 und dem Band 1 einströmt. Die Platte 16 ist mit den
Halterungen 19 am Deckel 20 befestigt und liegt seitlich auf
Unterstützungssteinen 21 auf.Fig. 2 shows a section A-A through the pickling section shown in Fig. 1. The
Liquid level is marked with 18. The
Fig. 3 zeigt eine Draufsicht auf die in Fig. 1 dargestellte Beizsektion, wobei der
Deckel der Beizsektion und das Band im Bereich des Flüssigkeitsbades 3 nicht
dargestellt sind. Die Platte 22 ist in dieser Figur in der Ausführungsvariante
einer gelochten Platte dargestellt. Die Einlässe 11 in der Seitenwand sind
schräg gegen die Bandlaufrichtung 15 gerichtet, um der Strömung aufgrund der
Schleppwirkung des Bandes 1 entgegenzuwirken.Fig. 3 shows a plan view of the pickling section shown in Fig. 1, the
Cover of the pickling section and the tape in the area of the
Fig. 4 zeigt wie Fig. 3 die Draufsicht auf die in Fig. 1 dargestellte Beizsektion,
jedoch mit der Ausführungsvariante einer unterbrochen Platte 23.4 shows, like FIG. 3, the top view of the pickling section shown in FIG. 1,
but with the variant of an
Fig. 5 zeigt wie Fig. 2 den Schnitt A-A durch die in Fig. 1 dargestellte
Beizsektion, jedoch mit der Ausführungsvariante einer V - förmigen Platte 24.
Fig. 6 zeigt einen Ausschnitt der Beizsektion mit dem Band 1, den
Abquetschwalzen 4 sowie der Platte 16. Die Platte 16 weist hier Querrippen 25
auf, an denen die Strömung abgebremst wird, wodurch sich eine erhöhte
Turbulenz und somit verbesserte Beizwirkung, ergibt.5 shows, like FIG. 2, the section A-A through that shown in FIG. 1
Pickling section, but with the design variant of a V-
Claims (14)
- Device for pickling metal strip in a trough-shaped tank, where a panel (16, 23, 24) submerged in the pickle is arranged above the strip (1) and the free surface (18) of the pickle extends over the entire tank surface, characterized by a panel (16, 23, 24) being mounted only above the strip (1) and by being aligned approximately in parallel with the strip (1), by extending from one side wall of the tank to the other side wall of the tank and by dividing the pickling bath into a treatment area underneath the panel (16, 23, 24), which is terminated by the tank bottom, and a return flow area for the pickle above the panel (16, 23, 24) with free surface (18) of the pickle.
- Device according to Claim 1, characterized by the panel being made up of a number of single panels (23, 24) arranged one after the other.
- Device according to Claim 2, characterized by gaps being left open between the panels (23, 24) through which the pickle can flow from the lower treatment area to the upper return flow area and vice versa.
- Device according to one of Claims 1 to 3, characterized by the panel (16, 23, 24) being perforated such that the pickle can circulate between the lower treatment area and the upper return flow area.
- Device according to one of Claims 1 to 4, characterized by the panel (16) covering almost the entire length of the pickling tank and by the said gaps between the panel (16) and the wall of the tank through which the pickle can flow from the lower treatment area to the upper return flow area and vice versa, being located at the beginning and the end of the tank only.
- Device according to one of Claims 1 to 5, characterized by the panel (24) having a V-shaped cross-section.
- Device according to one of Claims 1 to 6, characterized by the side of the panel (16, 23, 24) facing the strip (1) being fitted with bars (25).
- Device according to one of Claims 1 to 7, characterized by the pickle being fed in through inlets (11) at the sides of the tank and conveyed to the treatment area beneath the panel (16, 23, 24) by the effect of nozzles.
- Device according to one of Claims 1 to 8, characterized by the pickle being fed in underneath the strip (1) through the base of the tank.
- Device according to one of Claims 8 or 9, characterized by the nozzles being oriented at an angle against the direction (15) in which the strip is moving.
- Device according to one of Claims 1 to 10, characterized by the pickling tank being closed with a cover (20).
- Device according to Claim 11, characterized by the panel (16, 23, 24) being secured to the cover (20) of the tank and raised together with the cover (20) when opened.
- Device according to Claim 12, characterized by the panel (16, 23, 24) being able to yield upwards within certain limits so that it can evade the strip (1) if the two collide.
- Device according to Claim 13, characterized by the panel (16, 23, 24) being able to yield in its mounting (19).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT47896 | 1996-03-14 | ||
| AT0047896A AT403699B (en) | 1996-03-14 | 1996-03-14 | DEVICE FOR TREATING TREATMENTS WITH LIQUIDS |
| AT478/96 | 1996-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0795629A1 EP0795629A1 (en) | 1997-09-17 |
| EP0795629B1 true EP0795629B1 (en) | 2004-07-21 |
Family
ID=3491686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97101302A Expired - Lifetime EP0795629B1 (en) | 1996-03-14 | 1997-01-29 | Apparatus for strip surface treatment with liquids |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US5853495A (en) |
| EP (1) | EP0795629B1 (en) |
| JP (1) | JPH108274A (en) |
| KR (1) | KR970065774A (en) |
| CN (1) | CN1087360C (en) |
| AT (1) | AT403699B (en) |
| BR (1) | BR9701301A (en) |
| CA (1) | CA2199768A1 (en) |
| DE (1) | DE59711779D1 (en) |
| ID (1) | ID16199A (en) |
| RU (1) | RU2192506C2 (en) |
| TW (1) | TW367376B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT403699B (en) * | 1996-03-14 | 1998-04-27 | Andritz Patentverwaltung | DEVICE FOR TREATING TREATMENTS WITH LIQUIDS |
| AT407759B (en) * | 1997-11-28 | 2001-06-25 | Andritz Patentverwaltung | METHOD AND DEVICE FOR SURFACE TREATING TAPES WITH LIQUIDS |
| JP3160301B2 (en) * | 1998-03-11 | 2001-04-25 | 三菱重工業株式会社 | Pickling equipment |
| JP3160300B2 (en) | 1998-03-11 | 2001-04-25 | 三菱重工業株式会社 | Pickling equipment |
| FR2784998B1 (en) * | 1998-10-22 | 2001-01-12 | Kvaerner Metals Clecim | STRIPPING INSTALLATION OF A METAL STRIP |
| AT408765B (en) * | 1999-03-05 | 2002-03-25 | Andritz Ag Maschf | PLANT FOR CONTINUOUS TREATMENT OF STEEL TAPES |
| US6260563B1 (en) * | 1999-05-20 | 2001-07-17 | Danieli Technology, Inc. | High speed pickling with recycling of acid |
| DE10020633A1 (en) * | 2000-04-27 | 2001-11-08 | Sms Demag Ag | Method and device for treating the surface of metallic strip material, in particular for pickling rolled material |
| DE10020634A1 (en) * | 2000-04-27 | 2001-10-31 | Sms Demag Ag | Turbulence pickling with side injection |
| DE10030853A1 (en) * | 2000-06-23 | 2002-01-03 | Sms Demag Ag | Device for the treatment of metallic extrudates, in particular for pickling rolled strip |
| FR2917097A1 (en) * | 2007-06-06 | 2008-12-12 | Siemens Vai Metals Tech Sas | INSTALLATION FOR THE REMOVAL OF METAL BANDS, IN PARTICULAR STEEL |
| RU2551323C2 (en) * | 2013-07-19 | 2015-05-20 | Сергей Иванович Афанасьев | Device for metal tape treatment in coil |
| US9970141B2 (en) * | 2015-02-18 | 2018-05-15 | Morrison Textile Machinery Company | Apparatus and method for washing an elongate textile article |
| CN109563631A (en) * | 2016-09-27 | 2019-04-02 | Posco公司 | Uniform treatment device and acid dip pickle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT295956B (en) * | 1969-07-08 | 1972-01-25 | Ruthner Ind Planungs Ag | Method and device for guiding panels or endless belts through containers formed from shallow channels |
| EP0058216B1 (en) * | 1981-02-18 | 1985-08-28 | MANNESMANN Aktiengesellschaft | Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets |
| JPS6141783A (en) * | 1984-08-06 | 1986-02-28 | Hitachi Ltd | High-speed pickling method and apparatus |
| DE3629894A1 (en) * | 1986-08-29 | 1988-03-03 | Mannesmann Ag | SYSTEM FOR THE SURFACE TREATMENT OF CONTINUOUSLY CONTINUOUS TAPES, IN PARTICULAR BEATING SYSTEM |
| US4850378A (en) * | 1987-10-14 | 1989-07-25 | Nelson Steel | Steel pickling apparatus |
| JP2965310B2 (en) * | 1990-03-16 | 1999-10-18 | 株式会社日立製作所 | High speed pickling method and apparatus |
| KR940010458B1 (en) * | 1991-01-16 | 1994-10-22 | 미쯔비시주우고오교오 가부시기가이샤 | Classification Pickling Device |
| DE4240572A1 (en) * | 1992-12-03 | 1994-06-09 | Schloemann Siemag Ag | Pickling plant and method for operating the pickling plant |
| IT1262244B (en) * | 1993-11-30 | 1996-06-19 | Danieli Off Mecc | HYDRODYNAMIC SEAL PLATE AND HYDROSTATIC SUPPORT FOR PICKLING AND / OR CHEMICAL TREATMENTS AND / OR WASHING SYSTEMS FOR METAL TAPE |
| FR2721235B1 (en) * | 1994-06-20 | 1996-09-06 | Clecim Sa | Treatment installation, in particular for pickling a metal strip. |
| AT403699B (en) * | 1996-03-14 | 1998-04-27 | Andritz Patentverwaltung | DEVICE FOR TREATING TREATMENTS WITH LIQUIDS |
-
1996
- 1996-03-14 AT AT0047896A patent/AT403699B/en not_active IP Right Cessation
-
1997
- 1997-01-29 DE DE59711779T patent/DE59711779D1/en not_active Expired - Fee Related
- 1997-01-29 EP EP97101302A patent/EP0795629B1/en not_active Expired - Lifetime
- 1997-02-13 TW TW086101643A patent/TW367376B/en active
- 1997-02-14 ID IDP970434A patent/ID16199A/en unknown
- 1997-03-05 US US08/811,924 patent/US5853495A/en not_active Ceased
- 1997-03-11 KR KR1019970008163A patent/KR970065774A/en not_active Application Discontinuation
- 1997-03-12 CA CA002199768A patent/CA2199768A1/en not_active Abandoned
- 1997-03-13 JP JP9058843A patent/JPH108274A/en active Pending
- 1997-03-13 CN CN97104551A patent/CN1087360C/en not_active Expired - Fee Related
- 1997-03-13 RU RU97103628/02A patent/RU2192506C2/en not_active IP Right Cessation
- 1997-03-14 BR BR9701301A patent/BR9701301A/en not_active Application Discontinuation
-
2000
- 2000-12-22 US US09/742,185 patent/USRE37973E1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0795629A1 (en) | 1997-09-17 |
| ID16199A (en) | 1997-09-11 |
| MX9701801A (en) | 1997-09-30 |
| CA2199768A1 (en) | 1997-09-14 |
| ATA47896A (en) | 1997-09-15 |
| USRE37973E1 (en) | 2003-02-04 |
| BR9701301A (en) | 1998-09-01 |
| CN1087360C (en) | 2002-07-10 |
| US5853495A (en) | 1998-12-29 |
| TW367376B (en) | 1999-08-21 |
| CN1164580A (en) | 1997-11-12 |
| AT403699B (en) | 1998-04-27 |
| KR970065774A (en) | 1997-10-13 |
| RU2192506C2 (en) | 2002-11-10 |
| JPH108274A (en) | 1998-01-13 |
| DE59711779D1 (en) | 2004-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0795629B1 (en) | Apparatus for strip surface treatment with liquids | |
| DD266813A5 (en) | SURFACE TREATMENT CONSTRUCTION CONTINUOUSLY BEGINNING BAENDER, IN PARTICULAR BELTING EQUIPMENT | |
| DE69916999T2 (en) | Method and apparatus for high-speed treatment of a belt | |
| DE212013000215U1 (en) | Flue gas cleaning device | |
| DE2539422A1 (en) | METHOD OF COOLING HOT ROLLED BARS, STUDLES OR INGOTS AND COOLING SYSTEM FOR PRACTICING THE METHOD | |
| EP1815916A2 (en) | Lift-dipping plant | |
| EP0005729B1 (en) | Apparatus for heating open containers containing a molten material, such as baths contained in vats or crucibles for galvanising, enameling, lead-coating or holding metals or glass or like | |
| DE2518770A1 (en) | Textile washing machine with cascaded washing troughs - each having web guide rollers for passing web in contra-flow to washing lye | |
| WO1988005832A1 (en) | Process and device for the surface treatment of strips with fluids | |
| DE2039500C2 (en) | Device for treating sheets or endless belts in a container formed from shallow channels | |
| DE69901764T2 (en) | pickling | |
| DE2138159C3 (en) | Method and device for polishing the inner and outer surfaces of hollow glass bodies in a moving polishing-etching bath, in which the polishing liquid flows off after the action has taken place | |
| AT407759B (en) | METHOD AND DEVICE FOR SURFACE TREATING TAPES WITH LIQUIDS | |
| DE3320787C2 (en) | ||
| DE1501611B1 (en) | Device for cooling or heating goods that can be transferred from the liquid to the solid state | |
| DE4430567C1 (en) | Device for the surface treatment of material to be treated by means of a treatment liquid, in particular a strip pickling line | |
| EP1299576B1 (en) | Surface treatment plant for strips that are continuously fed through a treatment receptacle | |
| DE2850697A1 (en) | Lattice-work liners for wet-treatment vats for textiles - assembled from staves made of fluorocarbon! polymer | |
| CH480878A (en) | Device for wet treatment of rope-like textile goods | |
| AT220904B (en) | Method and device for the galvanic treatment of strand-like metallic material in liquid baths | |
| DE10254793A1 (en) | Device for applying a liquid layer uniformly thick over the working width onto a material web | |
| DE1621644C3 (en) | Device for treating strips, panels, profiles or wires with liquids | |
| DE9013784U1 (en) | Surface treatment device for strip-shaped rolled goods | |
| AT413219B (en) | Continuous process of increased cost effectiveness and efficiency for surface treatment, preferably cleaning, of a metal strip by means of a treatment liquid, especially an etching liquid | |
| AT203140B (en) | Process for washing and post-treatment of rayon threads running parallel to each other in flocks |
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: A1 Designated state(s): BE DE ES GB IT SE |
|
| 17P | Request for examination filed |
Effective date: 19970930 |
|
| 17Q | First examination report despatched |
Effective date: 19971031 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ANDRITZ AG |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAU | Approval following communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOSNAGR4 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE ES GB IT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20040721 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040721 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 59711779 Country of ref document: DE Date of ref document: 20040826 Kind code of ref document: P |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20041021 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20041101 |
|
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20040721 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050131 |
|
| 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 |
|
| 26N | No opposition filed |
Effective date: 20050422 |
|
| BERE | Be: lapsed |
Owner name: *ANDRITZ A.G. Effective date: 20050131 |
|
| 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: 20050802 |
|
| BERE | Be: lapsed |
Owner name: *ANDRITZ A.G. Effective date: 20050131 |