EP0058216B1 - Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets - Google Patents

Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets Download PDF

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Publication number
EP0058216B1
EP0058216B1 EP81101143A EP81101143A EP0058216B1 EP 0058216 B1 EP0058216 B1 EP 0058216B1 EP 81101143 A EP81101143 A EP 81101143A EP 81101143 A EP81101143 A EP 81101143A EP 0058216 B1 EP0058216 B1 EP 0058216B1
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EP
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Prior art keywords
immersing
members
liquid
tank
bath
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Expired
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EP81101143A
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German (de)
French (fr)
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EP0058216A1 (en
Inventor
Walter Mindt
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Vodafone GmbH
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Mannesmann AG
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT81101143T priority Critical patent/ATE15236T1/en
Priority to EP81101143A priority patent/EP0058216B1/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/02—Tanks; Installations therefor
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating

Definitions

  • the invention relates to a device for chemical or electro-chemical surface treatment of material to be treated in a heated liquid treatment medium, consisting of a liquid container provided with a lid, in particular a strip pickling system, in which the bath surface can be partially covered to reduce the evaporation surface.
  • a heated liquid treatment medium consisting of a liquid container provided with a lid, in particular a strip pickling system, in which the bath surface can be partially covered to reduce the evaporation surface.
  • the invention thus relates to all types of so-called process lines, in which materials such as. B. steel strip, wire or pipes are treated on the surface.
  • the surface treatment can e.g. B. pickling, cleaning, coating, etc. include.
  • the material to be treated can pass through the treatment medium or be placed in the liquid bath over a specific treatment time.
  • the problem underlying the invention is explained below with reference to a strip pickling line for continuous strip steel.
  • the bath surface is between 1000 and 200 mm above the surface. of the continuous steel strip.
  • these containers have free evaporation surfaces from 2 to 400 m 2 .
  • the total heat requirement is approx. 21 million kJ / h (5 million kcal / h).
  • the evaporation loss of these plants i. H. the resulting gas can be removed from the system by a suitable extraction system, whereby in most cases these extracted gases are aggressive and must be cleaned by a cleaning system in accordance with legal regulations before they are released into the atmosphere via an exhaust air chimney.
  • the object of the invention is to ensure, in addition to the covering of the evaporation surface by displacement bodies, which serve to reduce evaporation losses in the same way as the known floating plates, that the gas volume to be extracted is also minimized.
  • the solution to this problem consists according to the invention in the characterizing features of claim 1. This ensures that the displacement bodies reach up to the container lids and only the space above the reduced bath surface for receiving the gases produced. Vapors are available, with the result that not only is the suction volume reduced, but the downstream cleaning system can also be made smaller. In addition, no openings in the container lid are required to remove the displacers.
  • the saving in thermal energy in a strip pickling line according to the invention is approximately 90% of the share of the evaporation energy and 45% on the share of total thermal energy.
  • the saving on the suction volume is approx. 90%.
  • the effect of the treatment medium on the material to be treated can be increased to 10%.
  • the displacement bodies are expediently fastened to the container lids so that when the lids are closed they enter their immersed operative position.
  • the displacement bodies can also be placed on supports arranged inside the container, for example on electrodes.
  • the strip pickling system shown in FIG. 1 serves for pickling a steel strip 1 which is pulled through the pickling tank 7.
  • the pickling tank is filled with an inorganic acid as the treatment medium, the evaporation surface 3 of which is greatly reduced by immersing displacement bodies 4.
  • the U-shaped displacement bodies designed as hollow bodies are each attached to a container cover 5 and adapted to the course of the belt, i.e. they have a flat bottom. In addition, all displacement bodies are protected on the underside with wear ribs 6 against mechanical damage from the belt 1.
  • Fig. 2 clearly shows that the displacement body with its outline compared to the horizontal cross section of the liquid bath 2 leave only a minimal evaporation surface 3, which surrounds the displacement body. Since the displacement bodies in their operative position shown in FIG. 2 form a unit with the container lids 5, the free space above the evaporation surface 3 is also kept small. If the displacers 4 are placed on supports arranged inside the container (not shown), the evaporation surface can be reduced even further, since fastening the displacers to pivotably mounted container lids 5 due to the pivoting arrangement of the displacers a certain amount between the side walls of the displacers and a side wall of the container requires.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1. Apparatus for the chemical or electro-chemical treatment of surfaces of objects in a heated liquid medium, comprising a liquid tank (7) with a lid (5), particularly a sheet pickling plant, in which the liquid surface of the bath and thus the evaporation surface is reduced by immersing members (4) which can be removed out of their operative position for inserting and removing the material to be treated, characterized in that the immersing members (4) have a U-shaped cross-section and form a unit with the lids (5) of the tank in their covering operating position and in that the outer contour of the immersing members compared with the horizontal cross-section of the liquid bath (2) leds free a minimum evaporation surface (2) surrounding the immersing members.

Description

Die Erfindung betrifft eine Vorrichtung zur chemischen oder elektro-chemischen Oberflächenbehandlung von Behandlungsgut in einem erwärmten flüssigen Behandlungsmedium, bestehend aus einem mit einem Deckel versehenen Flüssigkeitsbehälter, insbesondere Bandbeizanlage, bei der die Badoberfläche zur Verringerung der Verdampfungsoberfläche teilweise abdeckbar ist. Die Erfindung bezieht sich somit auf alle Arten von sogenannten Prozeßlinien, in denen durch Behandlungsmedien, die über Raumtemperatur erwärmt sind, Materialien wie z. B. Bandstahl, Draht oder Rohre an der Oberfläche behandelt werden. Die Oberflächenbehandlung kann z. B. Beizen, Reinigen, Beschichten usw. umfassen. Das Behandlungsgut kann durch das Behandlungsmedium durchlaufen oder über eine bestimmte Behandlungszeit in das Flüssigkeitsbad eingelegt werden.The invention relates to a device for chemical or electro-chemical surface treatment of material to be treated in a heated liquid treatment medium, consisting of a liquid container provided with a lid, in particular a strip pickling system, in which the bath surface can be partially covered to reduce the evaporation surface. The invention thus relates to all types of so-called process lines, in which materials such as. B. steel strip, wire or pipes are treated on the surface. The surface treatment can e.g. B. pickling, cleaning, coating, etc. include. The material to be treated can pass through the treatment medium or be placed in the liquid bath over a specific treatment time.

Das der Erfindung zugrunde liegende Problem ist im folgenden anhand einer Bandbeizanlage für durchlaufenden Bandstahl näher erläutert. Bei derartigen Bandbeizanlagen mit mehreren hintereinander angeordneten Beizbehältern liegt die Badoberfläche je nach Konzeption der Anlage zwischen 1000 und 200 mm über der Oberfläche. des durchlaufenden Bandstahls. Je nach Durchsatzmenge und Materialabmessung haben diese Behälter freie Verdampfungsoberflächen von 2 bis 400 m2. Bei einer Bandbeizanlage für die Bandabmessung 1350 x 2,7 mm und einer Stundenleistung von 180 t beträgt der Gesamtwärmebedarf ca. 21 Mio kJ/h (5 Mio kcal/h).The problem underlying the invention is explained below with reference to a strip pickling line for continuous strip steel. In such belt pickling plants with several pickling tanks arranged one behind the other, depending on the design of the plant, the bath surface is between 1000 and 200 mm above the surface. of the continuous steel strip. Depending on the throughput and material dimensions, these containers have free evaporation surfaces from 2 to 400 m 2 . With a strip pickling line for the strip dimensions 1350 x 2.7 mm and an hourly output of 180 t, the total heat requirement is approx. 21 million kJ / h (5 million kcal / h).

Aufgeschlüsselt teilt sich dieser Wärmebedarf in etwa wie folgt auf

  • - für die Materialerwärmung ca. 9,24 Mio kJ/h (2,2 Mio kcai/h)
  • - für Oberflächenabstrahlung ca. 1,26 Mio kJ/h (300 000 kcal/h)
  • -Verdampfungseriergie durch die freie Oberfläche des Behandlungsmediums ca. 10,5 Mio kJ/ h (2,5 Mio kcal/h).
This heat requirement is broken down roughly as follows
  • - for material heating approx.9.24 million kJ / h (2.2 million kcai / h)
  • - for surface radiation approx.1.26 million kJ / h (300,000 kcal / h)
  • Evaporation energy through the free surface of the treatment medium approx. 10.5 million kJ / h (2.5 million kcal / h).

Des weiteren muß der Verdampfungsverlust dieser Anlagen, d. h. das hieraus entstehende Gas, durch eine geeignete Absaugung aus der Anlage abgeführt werden, wobei in den meisten Fällen diese abgesaugten Gase aggressiv sind und durch eine Reinigungsanlage entsprechend den gesetzlichen Vorschriften gereinigt werden müssen, bevor sie über einen Abluftkamin in die Atmosphäre abgegeben werden.Furthermore, the evaporation loss of these plants, i. H. the resulting gas can be removed from the system by a suitable extraction system, whereby in most cases these extracted gases are aggressive and must be cleaned by a cleaning system in accordance with legal regulations before they are released into the atmosphere via an exhaust air chimney.

Zur Einsparung von Verdampfungsverlusten ist es bekannt, die Oberfläche des Flüssigkeitsbades durch eine Vielzahl von schwimmfähigen Kugeln abzudecken (FR-PS 1 192 877). Diese Art der Abdeckung erlaubt es zwar, das Behandlungsgut ungehindert durch die schwimmfähigen Kugeln hierdurch in das Bad einzulegen und wieder herauszunehmen, jedoch ist dabei die prozentuale Verringerung der Badoberfläche deshalb nicht optimal, weil die Kugeln, selbst wenn sie alle dicht aneinanderstoßen würden, aufgrund ihrer Geometrie stets einen gewissen Freiraum zwischen sich belassen würden. Auch könnten die Kugeln durch Turbulenzen im Flüssigkeitsbad in Bewegung geraten und hierdurch zusätzliche freie Verdampfungsoberflächen schaffen.To save on evaporation losses, it is known to cover the surface of the liquid bath with a large number of floating balls (FR-PS 1 192 877). Although this type of cover allows the material to be treated to be freely inserted into and removed from the bath by the floatable balls, the percentage reduction in the bath surface area is not optimal because the balls, even if they would all come together, due to their Geometry would always leave a certain amount of space between them. The balls could also start to move due to turbulence in the liquid bath and thereby create additional free evaporation surfaces.

Durch die JP-A-7 111 561 ist eine Lösung des Problems der Verdampfungs-Wärmeverluste bekanntgeworden, die darin besteht, die Badoberfläche durch schwimmfähige Platten abzudecken, die durch Hochziehen seitlicher Gelenkwellen in der Nähe der inneren Seitenwand des Beizbehälters senkrech gestellt werden können, um das Beizgut in das Flüssigkeitsbad einbringen zu können. Die Badflüssigkeit soll durch die schwimmfähigen Platten zu mindestens 70% zugedeckt werden. Die damit verbundene Verringerung des abzusaugenden Gasvolumens soll sich nach dieser Literaturstelle dahingehend auswirken, daß das Sauggebläse nur für eine etwas über dem entstehenden Gasvolumen liegende Leistung ausgelegt zu werden braucht, um zu verhindern, daß aggresive Dämpfe an irgendwelchen Undichtigkeiten des Deckels austreten. Der Zusammenhang zwischen einer durch die Abdeckung der Badoberfläche verringerten Entstehung von Verdampfungsverlusten einerseits und der. Saugleistung des Gebläses andererseits ist also bekannt. Die Lösung gemäß der vorgenannten Literaturstelle erfordert jedoch einen beträchlichen apparativen Aufwand zum Handhaben der schwimmfähigen Platten über Seilzüge, die durch Öffnungen in dem Behälterdeckel hindurchgeführt sein müssen und somit unvermeidbare Undichtigkeiten mit sich bringen, die zu einer Erhöhung der Leistung des Sauggebläses führen. Im Übringen ist der Freiraum über den Abdeckplatten dem Raum zuzuordnen, der für die Entwicklung der Gase bezw. Dämpfe zur Verfügung steht, die von der wenn auch verringerten Badoberfläche aufsteigen. Der große Freiraum über dem Gesamtquerschnitt des Flüssigkeitsbades erhöht wiederum das abzusaugende Gasvolumen.From JP - A-7 111 561 a solution to the problem of evaporative heat loss has become known, which consists in covering the bath surface with floatable plates which can be turned upright by pulling up lateral cardan shafts near the inner side wall of the pickling tank to be able to introduce the pickling material into the liquid bath. At least 70% of the bath liquid should be covered by the floatable plates. The associated reduction in the volume of gas to be extracted should, according to this literature reference, have the effect that the suction fan only needs to be designed for a somewhat higher output than the resulting gas volume, in order to prevent aggressive vapors from escaping from any leaks in the cover. The relationship between the reduced evaporation losses on the one hand and the. Suction power of the blower on the other hand is therefore known. However, the solution according to the aforementioned literature requires considerable equipment outlay for handling the floatable plates via cable pulls, which have to be passed through openings in the container lid and thus bring about unavoidable leaks, which lead to an increase in the performance of the suction fan. In practice, the free space above the cover plates must be assigned to the space that is used for the development of the gases. Vapors are available that rise from the albeit reduced bath surface. The large free space over the entire cross-section of the liquid bath in turn increases the gas volume to be extracted.

Der Erfindung liegt die Aufgabe zugrunde, ausser der Abdeckung der Verdampfungsoberfläche durch Verdrängungskörper, die in gleicher Weise wie die bekannten schwimmfähigen Platten einer Verringerung der Verdampfungsverluste dienen, dafür zu sorgen, daß auch das abzusaugende Gasvolumen minimiert wird. Die Lösung dieser Aufgabe besteht gemäß der Erfindung in den kennzeichnenden Merkmalen des Abspruches 1. Hierdurch wird erreicht, daß die Verdrängungskörper bis zu den Behälterdeckeln reichen und nur der Freiraum über der reduzierten Badoberfläche zur Aufnahme der entstehenden Gase bezw. Dämpfe zur Verfügung steht mit der Folge, daß nicht nur das Absaugevolumen verringert wird, sondern auch die nachgeschaltete Reinigungsanlage kleiner ausgelegt werden kann. Hinzukommt, daß zum Entfernnen der Verdrängungskörper keine Öffnungen im Behälterdeckel erforderlich sind.The object of the invention is to ensure, in addition to the covering of the evaporation surface by displacement bodies, which serve to reduce evaporation losses in the same way as the known floating plates, that the gas volume to be extracted is also minimized. The solution to this problem consists according to the invention in the characterizing features of claim 1. This ensures that the displacement bodies reach up to the container lids and only the space above the reduced bath surface for receiving the gases produced. Vapors are available, with the result that not only is the suction volume reduced, but the downstream cleaning system can also be made smaller. In addition, no openings in the container lid are required to remove the displacers.

Die Einsparung an Wärmeenergie liegt bei einer Bandbeizanlage gemäß der Erfindung bei ca. 90% vom Anteil der Verdampfungsenergie und 45% vom Anteil der Gesamtwärmeenergie. Die Einsparung am Absaugevolumen liegt bei ca. 90%. Die Wirkung des Behandlungsmediums auf das zu behandelnde Material kann bis auf 10% erhöht werden.The saving in thermal energy in a strip pickling line according to the invention is approximately 90% of the share of the evaporation energy and 45% on the share of total thermal energy. The saving on the suction volume is approx. 90%. The effect of the treatment medium on the material to be treated can be increased to 10%.

Die Verdrängungskörper werden zweckmässig an den Behälterdeckeln befestigt, so daß sie mit dem Schließen der Deckel in ihre eintauchende Wirklage gelangen. Die Verdrängungskörper können jedoch auch auf innerhalb des Behälters angeordnete Stützen aufgelegt werden, beispielsweise auf Elektroden.The displacement bodies are expediently fastened to the container lids so that when the lids are closed they enter their immersed operative position. However, the displacement bodies can also be placed on supports arranged inside the container, for example on electrodes.

Um die Verdrängungskörper gegen mechanische Beschädigungen durch ein durch das Flüssigkeitsbad gezogenes Band oder dergleich zu schützen empfiehlt es sich, an ihrer Unterseite Schleißrippen anzubringen. Insbesondere in Verbindung mit derartigen Schleißrippen ist es vorteilhaft, daß die Verdrängungskörper mit ihrer Unterseite bis nahe an das Behandlungsgut reichen, so daß das Behandlungsmedium durch die in diesem Falle beim Durchlauf entstehende Turbulenz in seiner Wirkung auf das zu behandelnde Material verstärkt wird.In order to protect the displacement bodies against mechanical damage by a tape pulled through the liquid bath or the like, it is advisable to attach wear ribs on their underside. Particularly in connection with such wear ribs, it is advantageous that the displacement bodies extend with their underside close to the material to be treated, so that the effect of the treatment medium on the material to be treated is increased by the turbulence which occurs in this case during the passage.

In der Zeichnung ist als Ausführungsbeispiel der Erfindung eine Bandbeizanlage dargestellt. Es zeigen:

  • Fig. 1 einen Längsschnitt durch einen Beizbehälter mit mehreren Deckeln und Verdrängungskörpern, und
  • Fig. 2 einen Querschnitt.
In the drawing, a strip pickling line is shown as an exemplary embodiment of the invention. Show it:
  • Fig. 1 shows a longitudinal section through a pickling tank with several lids and displacers, and
  • Fig. 2 shows a cross section.

Die in Fig. 1 dargestellte Bandbeizanlage dient zum Beizen eines Stahlbandes 1, das durch den Beizbehälter 7 hindurchgezogen wird. Der Beizbehälter ist mit einer anorganischen Säure als Behandlungsmedium gefüllt, deren Verdampfungsoberfläche 3 durch eintauchende Verdrängungskörper 4 stark reduziert ist. Die U-förmig als Hohlkörper ausgebildeten Verdrängungskörper sind jeweils an einem Behälterdeckel 5 befestigt und dem Bandverlauf angepasst, d.h. sie haben eine ebene Unterseite. Ausserdem sind alle Verdrängungskörper an der Unterseite mit Schleißrippen 6 gegen mechanische Beschädigungen durch das Band 1 geschützt.The strip pickling system shown in FIG. 1 serves for pickling a steel strip 1 which is pulled through the pickling tank 7. The pickling tank is filled with an inorganic acid as the treatment medium, the evaporation surface 3 of which is greatly reduced by immersing displacement bodies 4. The U-shaped displacement bodies designed as hollow bodies are each attached to a container cover 5 and adapted to the course of the belt, i.e. they have a flat bottom. In addition, all displacement bodies are protected on the underside with wear ribs 6 against mechanical damage from the belt 1.

Fig. 2 zeigt deutlich, daß die Verdrängungskörper mit ihrem Umriß gegenüber dem waagerechten Querschnitt des Flüssigkeitsbades 2 nur eine minimale Verdampfungsoberfläche 3 freilassen, die die Verdrängungskörper umgibt. Da die Verdrängungskörper in ihrer in Fig. 2 dargestellten Wirklage mit den Behälterdeckeln 5 eine Einheit bilden, ist auch der Freiraum oberhalb der Verdampfungsoberfläche 3 kleingehalten. Wenn die Verdrängungskörper 4 auf innerhalb des Behälters angeordnete Stützen (nicht dargestellt) aufgelegt werden, kann die Verdampfungsoberfläche noch weiter verringert werden, da eine Befestigung der Verdrängungskörper an schwenkbar gelagerten Behälterdeckeln 5 wegen der mitschwenkenden Anordnung der Verdrängungskörper ein gewisses Maß zwischen den Seitenwänden der Verdrängungskörper und einer Seitenwand des Behälters erfordert.Fig. 2 clearly shows that the displacement body with its outline compared to the horizontal cross section of the liquid bath 2 leave only a minimal evaporation surface 3, which surrounds the displacement body. Since the displacement bodies in their operative position shown in FIG. 2 form a unit with the container lids 5, the free space above the evaporation surface 3 is also kept small. If the displacers 4 are placed on supports arranged inside the container (not shown), the evaporation surface can be reduced even further, since fastening the displacers to pivotably mounted container lids 5 due to the pivoting arrangement of the displacers a certain amount between the side walls of the displacers and a side wall of the container requires.

Claims (5)

1. Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, comprising a liquid tank (7) with a lid (5), particularly a sheet pickling plant, in which the liquid surface of the bath and thus the evaporation surface is reduced by immersing members (4) which can be removed out of their operative position for inserting and removing the material to be treated, characterized in that the immersing members (4) have a U-shaped cross-section and form a unit with the lids (5) of the tank in their covering operating position and in that the outer contour of the immersing members compared with the horizontal cross-section of the liquid bath (2) leds free a minimum evaporation surface (2) surrounding the immersing members.
2. Apparatus according to claim 1, characterized in that the immersing members (4) are attached to the lids (5) of the tank (7).
3. Apparatus according to claim 1, characterized in that the immersing members (4) may be placed on supports provided within the tank (7).
4. Apparatus according to claim 1, characterized in that the immersing members (4) are provided with wear-resistant rips (6) at their underside.
5. Apparatus according to claim 1 or 4, characterized in that the immersing members (4) extend with their underside close to the through-passing object (1) to be treated.
EP81101143A 1981-02-18 1981-02-18 Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets Expired EP0058216B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT81101143T ATE15236T1 (en) 1981-02-18 1981-02-18 DEVICE FOR CHEMICAL OR ELECTROCHEMICAL SURFACE TREATMENT OF PRODUCTS TO BE TREATED IN A HEATED LIQUID TREATMENT MEDIUM, PARTICULARLY STRIP SEALING PLANT.
EP81101143A EP0058216B1 (en) 1981-02-18 1981-02-18 Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81101143A EP0058216B1 (en) 1981-02-18 1981-02-18 Apparatus for the chemical or electrochemical treatment of surfaces of objects in a heated liquid medium, in particular for pickling sheets

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Publication Number Publication Date
EP0058216A1 EP0058216A1 (en) 1982-08-25
EP0058216B1 true EP0058216B1 (en) 1985-08-28

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WO1988005832A1 (en) * 1987-02-05 1988-08-11 Maschinenfabrik Andritz Aktiengesellschaft Process and device for the surface treatment of strips with fluids
BE1005217A3 (en) * 1990-10-08 1993-06-01 Four Industriel Belge Method and apparatus for degreasing pickling and son or metal bands or similar items.
DE4125771A1 (en) * 1991-08-03 1993-02-04 Kodak Ag SILVER RECOVERY DEVICE
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AT407759B (en) * 1997-11-28 2001-06-25 Andritz Patentverwaltung METHOD AND DEVICE FOR SURFACE TREATING TAPES WITH LIQUIDS
EP0984080B1 (en) * 1998-03-11 2002-10-16 Mitsubishi Heavy Industries, Ltd. Pickling device
JP3160300B2 (en) * 1998-03-11 2001-04-25 三菱重工業株式会社 Pickling equipment
DE10020634A1 (en) * 2000-04-27 2001-10-31 Sms Demag Ag Turbulence pickling with side injection
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EP0058216A1 (en) 1982-08-25
ATE15236T1 (en) 1985-09-15

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