EP0795629A1 - Apparatus for strip surface treatment with liquids - Google Patents
Apparatus for strip surface treatment with liquids Download PDFInfo
- Publication number
- EP0795629A1 EP0795629A1 EP97101302A EP97101302A EP0795629A1 EP 0795629 A1 EP0795629 A1 EP 0795629A1 EP 97101302 A EP97101302 A EP 97101302A EP 97101302 A EP97101302 A EP 97101302A EP 0795629 A1 EP0795629 A1 EP 0795629A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- treatment
- liquid
- container
- belt
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000004381 surface treatment Methods 0.000 title claims abstract description 4
- 238000005554 pickling Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 3
- 238000010992 reflux Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 12
- 230000002349 favourable effect Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002253 acid Substances 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
- 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 the surface treatment of strips with liquids, in particular for pickling rolled metal strips, in a trough-shaped container, in particular closed off by a lid.
- the mean bath depth can only be reduced to a lower limit determined by the maximum belt speed. Due to the drag effect of the moving belt, the treatment medium in the treatment bath is entrained in the direction of the belt movement. The result is an inclined liquid level with a correspondingly excessive bath depth at the exit of the strip from the treatment bath and a correspondingly reduced bath depth at the entry of the strip into the treatment bath.
- higher speeds e.g. at 200 mm average bath depth and 20 m bath length above approx. 200 m / min belt speed
- there is an empty pump in the area where the belt enters the treatment bath so that the immersion length of the belt in the treatment medium is shortened accordingly and thus the Length of the treatment bath is no longer fully utilized.
- the middle bathroom mirror must therefore be raised to avoid draining.
- the performance limit of a treatment bath with a free surface is therefore given by the optimum between shortening the pickling bath due to drag effect and reduced pickling effect due to greater mean bath depth.
- a known measure for achieving a low mean bath depth at high speeds is the formation of a closed treatment channel.
- the bath depth is thereby fixed to the height of the treatment channel.
- the band To prevent the treatment channel from being emptied, the band must exit the treatment channel using methods such as e.g. in EP 0 655 519 A1, are hydrodynamically sealed against the dynamic pressure of the towing effect.
- the hydrodynamic seal requires a considerable amount of energy, which must be additionally applied in comparison to treatment baths with a free surface.
- due to the high back pressure due to the sealing of the treatment channel at the strip outlet the necessary supply of fresh treatment medium is made more difficult and is associated with high energy expenditure.
- the purpose of this invention is to improve the performance limit of a treatment bath with a free surface, so that the disadvantages of a closed treatment channel are avoided.
- the invention is characterized in that a plate immersed in the liquid, in particular in the pickling medium, is arranged above the belt, which is aligned approximately parallel to the belt and the treatment bath in a treatment area below the plate and a reflux area for the liquid, in particular that Pickling medium, divides above the plate.
- Another advantage of the proposed device is that a treatment channel with a small bath depth is formed by the plate according to the invention, while at the same time the free surface of the treatment medium is retained and the drag effect of the belt is used for a targeted circulation and mixing of the treatment medium in the treatment container.
- a particularly favorable effect is achieved if the plate extends almost over the entire length of the treatment container and only at the beginning and end of the container are passages between the plate and the container wall or in the plate through which the liquid, in particular the pickling medium , can flow from the lower treatment area to the upper reflux area and vice versa.
- the treatment liquid is thus conducted completely from the area of the tape outlet to the area of the tape inlet.
- the plate consists of several individual plates arranged one after the other, and that passage gaps are left between the plates, through which the liquid, in particular the pickling medium, can flow from the lower treatment area to the upper reflux area and vice versa.
- circulation of the treatment liquid is achieved in partial areas of the treatment container, and on the other hand the treatment liquid flows better when the treatment container is emptied.
- the plate contains openings through which the liquid, in particular the pickling medium, can circulate between the lower treatment area and the upper reflux area.
- a particularly favorable effect is achieved if the plate has a V-shaped cross section, as a result of which flat contact with flat belts can be avoided and the flow of treatment liquid is improved when emptying.
- a particularly favorable effect is achieved if the plate on the side facing the belt is provided with transverse ribs which on the one hand brake the flow by dragging and on the other hand cause increased turbulence in the treatment room.
- the separation into a treatment area and a reflux area can advantageously be used for a targeted supply of fresh treatment liquid, in which the treatment liquid, in particular pickling medium, is supplied to the sides of the container through inlets and introduced into the treatment room below the plate by means of a jet effect, or in that the Liquid, in particular the pickling medium, is fed below the belt through the bottom of the container.
- the injection is preferably carried out in the area of the belt inlet so that the freshly supplied treatment liquid is first guided along the belt before it recirculates in the treatment tank through the reflux area formed by the plate.
- a particularly favorable design of the injection results if it is directed at an angle against the direction of movement of the belt. This is causing a reduction in the drag effect of the belt and therefore brings about a further reduction in the accumulation height in the area of the belt outlet.
- An advantageous embodiment of the device according to the invention results when the plate is fastened to the lid of the treatment container and is lifted by the lid when the lid is opened, the plate preferably being able to move upward within certain limits in order to avoid collisions with the belt to be able to dodge.
- FIG. 1 shows a pickling section according to the invention
- FIG. 2 shows a section through the pickling section shown in FIG. 1
- FIG. 3 shows a top view of the pickling section shown in FIG. 1
- 4 shows a variant of the top view
- FIG. 5 shows 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 very simplified form in the drawing figures in order to explain the principle.
- Fig. 1 shows the exemplary scheme of a pickling section with the associated pipelines, pumps, heat exchangers and the circulation tank.
- the strip 1 to be treated is guided into the pickling section via squeeze rollers 2, dips into the liquid bath 3 and is led out of the pickling section again at the other end of the pickling section by the squeeze rollers 4.
- the treatment liquid 5 is fed from the circulation tank 6 via the pipes 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 and via the overflow stones 12a at the inlet and 12b at the outlet of the pickling section derived in receptacles 13a, 13b and returned from there via the pipes 14a, 14b into 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 arranged in the embodiment of a continuous plate in the liquid bath 3.
- the arrows 17 indicate the flow around the plate 16 caused by the drag effect of the belt 1.
- 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 flows into the space between the plate 16 and the belt 1.
- the plate 16 is fastened to the cover 20 with the brackets 19 and rests laterally on supporting stones 21.
- FIG. 3 shows a top view of the pickling section shown in FIG. 1, the cover of the pickling section and the band in the region of the liquid bath 3 not being shown.
- the plate 22 is shown in this figure in the variant of a perforated plate.
- the inlets 11 in the side wall are directed obliquely against the tape running direction 15 in order to counteract the flow due to 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 AA through the pickling section shown in FIG. 1, but with the embodiment variant of a V-shaped plate 24.
- 6 shows a section of the pickling section with the belt 1, the squeezing rollers 4 and the plate 16.
- the plate 16 here has transverse ribs 25 on which the flow is slowed down, which results in increased turbulence and thus improved pickling effect.
- the application is described on the basis of a pickling line, but can also be used in other processes in which a belt with high Speed is transported through a container with treatment liquid.
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- 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)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Oberflächenbehandeln von Bändern mit Flüssigkeiten, insbesondere zum Beizen gewalzter Metallbänder, in einem rinnenförmigen, insbesondere durch Deckel abgeschlossenen, Behälter.The invention relates to a device for the surface treatment of strips with liquids, in particular for pickling rolled metal strips, in a trough-shaped container, in particular closed off by a lid.
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, carried out 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 rate of the treatment medium on the belt surface of the band-shaped material to be treated is positively influenced by a reduction in the liquid boundary layer on the belt surface, there is a tendency towards ever smaller bath depths, which results in a higher bath turbulence due to the higher Reynolds number and a reduction in the liquid boundary layer due to higher shear action .
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.If the surface of the treatment bath is free, the mean bath depth can only be reduced to a lower limit determined by the maximum belt speed. Due to the drag effect of the moving belt, the treatment medium in the treatment bath is entrained in the direction of the belt movement. The result is an inclined liquid level with a correspondingly excessive bath depth at the exit of the strip from the treatment bath and a correspondingly reduced bath depth at the entry of the strip into 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), there is an empty pump in the area where the belt enters the treatment bath, so that the immersion length of the belt in the treatment medium is shortened accordingly and thus the Length of the treatment bath is no longer fully utilized. The middle bathroom mirror must therefore be raised to avoid draining. The performance limit of a treatment bath with a free surface is therefore given by the optimum between shortening the pickling bath due to drag effect and reduced pickling effect due to 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 mean bath depth at high speeds is the formation of a closed treatment channel. The bath depth is thereby fixed to the height of the treatment channel. To prevent the treatment channel from being emptied, the band must exit the treatment channel using methods such as e.g. 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 brings about a reduction in the energy requirement for maintaining the treatment temperature. However, this is not advantageous, in particular, in pickling plants which recover the acid by decomposing heat in additional devices, since the amount of liquid not evaporated in the treatment tank increases the energy requirement for recovery accordingly.
Zweck dieser Erfindung ist es, die Leistungsgrenze eines Behandlungsbades mit freier Oberfläche zu verbessern, so daß die Nachteile eines geschlossenen Behandlungskanals vermieden werden.The purpose of this invention is to improve the performance limit of a treatment bath with a free surface, so that the disadvantages of a closed treatment channel are avoided.
Der Erfindung ist dadurch gekennzeichnet, daß oberhalb des Bandes eine in die Flüssigkeit, insbesondere in das Beizmedium, eingetauchte Platte angeordnet ist, die ungefähr parallel zum Band ausgerichtet ist und das Behandlungsbad in einen Behandlungsbereich unterhalb der Platte und einen Rückflußbereich für die Flüssigkeit, insbesondere das Beizmedium, oberhalb der Platte teilt. Dies bewirkt im Behandlungsbehälter einen verbesserten Rückfluß der aufgestauten Behandlungsflüssigkeit 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 Behandlungsmediums im Behandlungsbehälter genutzt wird.The invention is characterized in that a plate immersed in the liquid, in particular in the pickling medium, is arranged above the belt, which is aligned approximately parallel to the belt and the treatment bath in a treatment area below the plate and a reflux area for the liquid, in particular that Pickling medium, divides above the plate. This causes an improved backflow of the accumulated treatment liquid in the treatment container from the area of the tape outlet to the tape inlet, so that the accumulation height in the area of the tape outlet is reduced and therefore the average bath depth can be reduced. Another advantage of the proposed device is that a treatment channel with a small bath depth is formed by the plate according to the invention, while at the same time the free surface of the treatment medium is retained and the drag effect of the belt is used for a targeted circulation and mixing of the treatment medium in the treatment container.
Eine besonders günstige Wirkung wird erreicht, wenn die Platte sich nahezu über die gesamte Länge des Behandlungsbehälters erstreckt, und nur am Anfang und Ende des Behälters Durchlässe zwischen der Platte und der Behälterwand oder in der Platte vorhanden sind, durch die die Flüssigkeit, insbesondere das Beizmedium, vom unteren Behandlungsbereich in den oberen Rückflußbereich und umgekehrt fließen kann. So wird die Behandlungsflüssigkeit vollständig vom Bereich des Bandauslaufes hin zum Bereich des Bandeinlaufes geleitet.A particularly favorable effect is achieved if the plate extends almost over the entire length of the treatment container and only at the beginning and end of the container are passages between the plate and the container wall or in the plate through which the liquid, in particular the pickling medium , can flow from the lower treatment area to the upper reflux area and vice versa. The treatment liquid is thus conducted completely from the area of the tape outlet to the area of the tape inlet.
Bei längeren Behandlungsbehältern ist es von Vorteil, wenn die Platte aus mehreren nacheinander angeordneten Einzelplatten besteht, und daß zwischen den Platten Durchlaßspalte belassen werden, durch die die Flüssigkeit, insbesondere das Beizmedium, vom unteren Behandlungsbereich in den oberen Rückflußbereich und umgekehrt fließen kann. Hierdurch wird zum einen eine Umwälzung der Behandlungsflüssigkeit in Teilbereichen des Behandlungsbehälters erreicht, zum anderen fließt die Behandlungsflüssigkeit beim Entleeren des Behandlungsbehälters besser ab. Der gleiche Effekt kann dadurch erreicht werden, daß die Platte Öffnungen enthält, durch die die Flüssigkeit, insbesondere das Beizmedium, zwischen dem unteren Behandlungsbereich und dem oberen Rückflußbereich zirkulieren kann.For longer treatment containers, it is advantageous if the plate consists of several individual plates arranged one after the other, and that passage gaps are left between the plates, through which the liquid, in particular the pickling medium, can flow from the lower treatment area to the upper reflux area and vice versa. This will, on the one hand circulation of the treatment liquid is achieved in partial areas of the treatment container, and on the other hand the treatment liquid flows better when the treatment container is emptied. The same effect can be achieved in that the plate contains openings through which the liquid, in particular the pickling medium, can circulate between the lower treatment area and the upper reflux area.
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 der Behandlungsflüssigkeit beim Entleeren verbessert wird.A particularly favorable effect is achieved if the plate has a V-shaped cross section, as a result of which flat contact with flat belts can be avoided and the flow of treatment liquid is improved when emptying.
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 side facing the belt is provided with transverse ribs which on the one hand brake the flow by dragging and on the other hand cause increased turbulence in the treatment room.
Die Trennung in einen Behandlungsbereich und einen Rückflußbereich kann vorteilhaft für eine gezielte Zuführung frischer Behandlungsflüssigkeit genutzt werden, in dem die Behandlungsflüssigkeit, insbesondere Beizmedium, an den Seiten des Behälters durch Einlässe zugeführt und durch Düsenwirkung in den Behandlungsraum unterhalb der Platte eingebracht wird bzw. daß die Flüssigkeit, insbesondere das Beizmedium, unterhalb des Bandes durch den Boden des Behälters zugeführt wird. Die Eindüsung erfolgt vorzugsweise im Bereich des Bandeinlaufes, so daß die frisch zugeführte Behandlungsflüssigkeit zunächst am Band entlang geführt wird, bevor sie über den durch die Platte gebildeten Rückflußbereich im Behandlungsbehälter rückzirkuliert.The separation into a treatment area and a reflux area can advantageously be used for a targeted supply of fresh treatment liquid, in which the treatment liquid, in particular pickling medium, is supplied to the sides of the container through inlets and introduced into the treatment room below the plate by means of a jet effect, or in that the Liquid, in particular the pickling medium, is fed below the belt through the bottom of the container. The injection is preferably carried out in the area of the belt inlet so that the freshly supplied treatment liquid is first guided along the belt before it recirculates in the treatment tank through the reflux area formed by the plate.
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 it is directed at an angle against the direction of movement of the belt. This is causing a reduction in the drag effect of the belt and therefore brings about a further reduction in the accumulation height in the area of the belt outlet.
Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Vorrichtung ergibt sich, wenn die Platte am Deckel des Behandlungsbehälters 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 when the plate is fastened to the lid of the treatment container and is lifted by the lid when the lid is opened, the plate preferably being able to move upward within certain limits in order to avoid collisions with the belt to be able to dodge.
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 is described by way of example with reference to drawings, in which: FIG. 1 shows a pickling section according to the invention, FIG. 2 shows a section through the pickling section shown in FIG. 1, FIG. 3 shows a top view of the pickling section shown in FIG. 1, 4 shows a variant of the top view, FIG. 5 shows a variant of the cross section of the pickling section shown in FIG. 1 and FIG. 6 shows a variant of the plate with transverse ribs. The system is shown in a very simplified form in the drawing figures in order to explain the principle.
Fig. 1 zeigt das beispielhafte Schema einer Beizsektion mit den dazugehörigen Rohrleitungen, Pumpen, Wärmetauscher und dem Kreislauttank. 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. The
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 top view of the pickling section shown in FIG. 1, the cover of the pickling section and the band in the region 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.
Die Anmeldung ist anhand einer Beizanlage beschrieben, kann aber auch bei anderen Verfahren verwendet werden, bei denen ein Band mit hoher Geschwindigkeit durch einen Behälter mit Behandlungsflüssigkeit transportiert wird.5 shows, like FIG. 2, the section AA through the pickling section shown in FIG. 1, but with the embodiment variant of a V-
6 shows a section of the pickling section with the
The application is described on the basis of a pickling line, but can also be used in other processes in which a belt with high Speed is transported through a container with treatment liquid.
Claims (11)
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 true EP0795629A1 (en) | 1997-09-17 |
| EP0795629B1 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) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926268A1 (en) * | 1997-11-28 | 1999-06-30 | Andritz-Patentverwaltungs-Gesellschaft m.b.H. | Method and apparatus for guiding a strip in a treatment bath |
| EP0984080A1 (en) * | 1998-03-11 | 2000-03-08 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| EP0984079A1 (en) * | 1998-03-11 | 2000-03-08 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| EP1054079A1 (en) * | 1999-05-20 | 2000-11-22 | Danieli Corporation | Method and apparatus for high-speed strip treatment |
| EP1149935A2 (en) * | 2000-04-27 | 2001-10-31 | SMS Demag AG | Process and apparatus for treating metal strip surfaces, in particular for pickling rolled strips |
| EP1167578A1 (en) * | 2000-06-23 | 2002-01-02 | SMS Demag AG | Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip |
| EP1276918A1 (en) * | 2000-04-27 | 2003-01-22 | SMS Demag Aktiengesellschaft | Method and device for treating the surfaces of metallic strip material, especially for pickling rolled material |
| WO2008148451A1 (en) * | 2007-06-06 | 2008-12-11 | Siemens Vai Metals Technologies Sas | Plant for pickling metal strips, especially steel strips |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT403699B (en) * | 1996-03-14 | 1998-04-27 | Andritz Patentverwaltung | DEVICE FOR TREATING TREATMENTS WITH LIQUIDS |
| 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 |
| 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 |
| WO2018062860A2 (en) * | 2016-09-27 | 2018-04-05 | 주식회사 포스코 | Uniform treatment apparatus and pickling apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058216A1 (en) * | 1981-02-18 | 1982-08-25 | 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 |
| DE4108516A1 (en) * | 1990-03-16 | 1991-09-19 | Hitachi Ltd | HIGH-SPEED SEEDING DEVICE AND HIGH-SPEED SEEDING METHOD |
| EP0655519A1 (en) * | 1993-11-30 | 1995-05-31 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Plates to provide a hydrodynamic seal and hydrostatic support for plants performing the pickling and/or chemical treatment and/or cleaning of metallic strip |
| FR2721235A1 (en) * | 1994-06-20 | 1995-12-22 | Clecim Sa | Installation for treating metal strip, esp. for pickling rolled strip |
Family Cites Families (6)
| 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 |
| 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 |
| KR940010458B1 (en) * | 1991-01-16 | 1994-10-22 | 미쯔비시주우고오교오 가부시기가이샤 | Jet pickling apparatus |
| DE4240572A1 (en) * | 1992-12-03 | 1994-06-09 | Schloemann Siemag Ag | Pickling plant and method for operating the pickling plant |
| 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 EP EP97101302A patent/EP0795629B1/en not_active Expired - Lifetime
- 1997-01-29 DE DE59711779T patent/DE59711779D1/en not_active Expired - Fee Related
- 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 RU RU97103628/02A patent/RU2192506C2/en not_active IP Right Cessation
- 1997-03-13 CN CN97104551A patent/CN1087360C/en not_active Expired - Fee Related
- 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
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058216A1 (en) * | 1981-02-18 | 1982-08-25 | 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 |
| DE4108516A1 (en) * | 1990-03-16 | 1991-09-19 | Hitachi Ltd | HIGH-SPEED SEEDING DEVICE AND HIGH-SPEED SEEDING METHOD |
| EP0655519A1 (en) * | 1993-11-30 | 1995-05-31 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Plates to provide a hydrodynamic seal and hydrostatic support for plants performing the pickling and/or chemical treatment and/or cleaning of metallic strip |
| FR2721235A1 (en) * | 1994-06-20 | 1995-12-22 | Clecim Sa | Installation for treating metal strip, esp. for pickling rolled strip |
Non-Patent Citations (1)
| Title |
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| DATABASE WPI Section Ch Week 8615, Derwent World Patents Index; Class M12, AN 86-097185, XP002030888 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318648C (en) * | 1997-11-28 | 2007-05-30 | 安德里茨-专利管理有限公司 | Process and apparatus for improved guiding of strip |
| EP0926268A1 (en) * | 1997-11-28 | 1999-06-30 | Andritz-Patentverwaltungs-Gesellschaft m.b.H. | Method and apparatus for guiding a strip in a treatment bath |
| US6340028B1 (en) | 1998-03-11 | 2002-01-22 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| EP0984080A1 (en) * | 1998-03-11 | 2000-03-08 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| EP0984079A1 (en) * | 1998-03-11 | 2000-03-08 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| EP0984079A4 (en) * | 1998-03-11 | 2000-09-27 | Mitsubishi Heavy Ind Ltd | Pickling device |
| EP0984080A4 (en) * | 1998-03-11 | 2000-10-04 | Mitsubishi Heavy Ind Ltd | Pickling device |
| US6305096B1 (en) | 1998-03-11 | 2001-10-23 | Mitsubishi Heavy Industries, Ltd. | Pickling device |
| US6551413B2 (en) | 1999-05-20 | 2003-04-22 | Danieli Technology, Inc. | High speed pickling with recycling of acid |
| US6260563B1 (en) | 1999-05-20 | 2001-07-17 | Danieli Technology, Inc. | High speed pickling with recycling of acid |
| EP1054079A1 (en) * | 1999-05-20 | 2000-11-22 | Danieli Corporation | Method and apparatus for high-speed strip treatment |
| EP1149935A2 (en) * | 2000-04-27 | 2001-10-31 | SMS Demag AG | Process and apparatus for treating metal strip surfaces, in particular for pickling rolled strips |
| EP1276918A1 (en) * | 2000-04-27 | 2003-01-22 | SMS Demag Aktiengesellschaft | Method and device for treating the surfaces of metallic strip material, especially for pickling rolled material |
| EP1149935A3 (en) * | 2000-04-27 | 2003-07-23 | SMS Demag AG | Process and apparatus for treating metal strip surfaces, in particular for pickling rolled strips |
| EP1167578A1 (en) * | 2000-06-23 | 2002-01-02 | SMS Demag AG | Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip |
| WO2008148451A1 (en) * | 2007-06-06 | 2008-12-11 | Siemens Vai Metals Technologies Sas | Plant for pickling metal strips, especially steel strips |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59711779D1 (en) | 2004-08-26 |
| AT403699B (en) | 1998-04-27 |
| ATA47896A (en) | 1997-09-15 |
| USRE37973E1 (en) | 2003-02-04 |
| BR9701301A (en) | 1998-09-01 |
| MX9701801A (en) | 1997-09-30 |
| ID16199A (en) | 1997-09-11 |
| TW367376B (en) | 1999-08-21 |
| EP0795629B1 (en) | 2004-07-21 |
| JPH108274A (en) | 1998-01-13 |
| CA2199768A1 (en) | 1997-09-14 |
| CN1164580A (en) | 1997-11-12 |
| US5853495A (en) | 1998-12-29 |
| CN1087360C (en) | 2002-07-10 |
| RU2192506C2 (en) | 2002-11-10 |
| KR970065774A (en) | 1997-10-13 |
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