EP0518850A1 - Procédé et dispositif de décapage électrolytique d'objets conducteurs électriques transportés en continu - Google Patents

Procédé et dispositif de décapage électrolytique d'objets conducteurs électriques transportés en continu Download PDF

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Publication number
EP0518850A1
EP0518850A1 EP92890135A EP92890135A EP0518850A1 EP 0518850 A1 EP0518850 A1 EP 0518850A1 EP 92890135 A EP92890135 A EP 92890135A EP 92890135 A EP92890135 A EP 92890135A EP 0518850 A1 EP0518850 A1 EP 0518850A1
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EP
European Patent Office
Prior art keywords
container
treatment
electrolyte
electrodes
treated
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.)
Withdrawn
Application number
EP92890135A
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German (de)
English (en)
Inventor
Karl Jirenec
Jovan Dipl. Ing. Dr. Starcevic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Patentverwaltungs GmbH
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Andritz Patentverwaltungs GmbH
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Filing date
Publication date
Application filed by Andritz Patentverwaltungs GmbH filed Critical Andritz Patentverwaltungs GmbH
Publication of EP0518850A1 publication Critical patent/EP0518850A1/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/04—Pickling; Descaling in solution
    • C25F1/06—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • 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 method for the electrolytic pickling of continuously passing, electrically conductive material, in particular metal strips, wires or profiles, the material successively passing through at least two containers filled with aqueous electrolytes, in which the material is supplied with current, and a device to carry out the procedure.
  • the metallic object is directly polarized as a cathode or anode.
  • this direct method of applying current by means of current rollers, brushes or the like has not become established because of the poor conductivity of the top layers of scale.
  • Industrial plants have been or are being built throughout using indirect methods of applying electricity.
  • the metallic band is carried out between pairs of electrodes which alternately have opposite polarity. The electrical current passes from an electrode via the pickling solution to the belt, where it flows preferentially due to the better conductivity of the metal and is discharged at the next pair of electrodes.
  • Indirect treatments are described, for example, in EP-A 93 681 and EP-A 395 542, which show methods and devices for the electrolytic coating of elongated metal objects or electrically conductive substrates, these workpieces being continuously passed through at least two electrolyte baths.
  • the electrolytes can match or different compositions can be used.
  • a cathode is provided in each of the first baths, and the workpiece is therefore anodic, and an anode is arranged in the bath provided for coating, so that the workpiece is cathodically polarized.
  • the circuit is closed over the goods to be treated.
  • electrolytic treatment using the indirect method are, for example, the pickling of stainless steel in neutral salts, for example sodium sulfate, and the subsequent finish pickling in mineral acids, for example sulfuric or mixed acid (nitric acid and hydrofluoric acid).
  • neutral salts for example sodium sulfate
  • mineral acids for example sulfuric or mixed acid (nitric acid and hydrofluoric acid).
  • AT-PS 391 486 describes a two-stage process for the electrolytic pickling of stainless steel, in which pickling is carried out alternately anodically and cathodically in aqueous neutral salt solutions.
  • Electrolyte solutions are also used which contain, for example, nitrate and fluoride anions, which lead to very aggressive solutions and therefore particularly attack the anode material. This leads to a relatively short service life of the anode and thus reduces the economy of this process.
  • the material to be treated is alternately anodically and cathodically pickled in the same container.
  • This alternating anodic and cathodic treatment is also carried out in the areas with aggressive electrolyte solutions which contain, for example, fluoride, chloride or nitrate anions, so that the problem of the correct one Selection of the anode material has not yet been solved economically.
  • the aim of the present invention was therefore an economical process for the continuous pickling or pickling of electrically conductive material, in particular metal strips, wires or profiles, in which, on the one hand, aggressive electrolyte solutions in connection with power support are used to improve the treatment effect and to shorten the treatment time can and, on the other hand, with regard to improved economy, long service life of the electrodes, in particular the anodes, and low costs due to the choice of cheap anode material.
  • Another goal was a device for performing this method.
  • the first goal is achieved by a method in which the material passes through at least two containers filled with aqueous electrolytes in succession in at least one treatment unit, at least one cathodic treatment in a first container being followed only by an anodic treatment in an immediately following container and current of at least one an electrode of the first container over the material to be treated passed to an electrode of the second container and through the material a circuit between the electrodes in the successive containers of different polarity is closed.
  • electrolyte-anode combinations can be used, in which passivation reactions coat the electrodes with a protective layer and are therefore subject to only slight wear.
  • electrolytes with sulfate ions and lead anodes electrolytes with chloride ions and graphite anodes or electrolytes with nitrate ions and stainless steel anodes.
  • the parameters of the aqueous electrolyte solutions with regard to their temperature, composition and / or combination as well as the treatment lengths or ratios can be selected within a wide range. In this context, however, it has been shown that the treatment times due to the current support are generally opposite conventional chemical treatments are shorter, and therefore the plants can be structurally shorter with the same output. In addition to the previously mentioned advantages of the cheaper and less subject to wear electrodes, the shorter pickling times and thus smaller plant sizes and also the better treatment results, there are corresponding surface improvements for electrical polishing, and there is a further advantage of the method according to the invention in that it is possible by the setting of the current density to achieve a targeted material removal during pickling and thus to keep the pickling loss low. In many cases, the environmental impact can also be significantly reduced.
  • the conventional processes which provide purely chemical mixed acid aftertreatments, have the disadvantage that the nitric acid required as an electron donor leads to emissions of nitrogen oxides.
  • the metal oxidizing effect is achieved via the electric current, so that in many cases there is no need for electrolytes with nitrate ions, and even when they are used, there is only minimal decomposition to nitrogen oxides.
  • it is usually not necessary to change the system with regard to the electrolyte compositions or the length of the treatment containers, since the different treatment needs can be met by simply changing the current density. Therefore shorter set-up times are possible with the changes mentioned.
  • the method according to the invention can advantageously be used primarily for the pickling or pickling of bonded metallic strips, such as, for example, stainless steel, carbon steel, alloyed steels and special metals.
  • the material in the container for the cathodic treatment is also subjected to a treatment of changing polarity by passing it with electrodes with different polarity.
  • the material is cleaned of electrolyte which has been transported at least when it emerges from a container or enters the subsequent container.
  • Goods to be treated are also subjected to neutralization treatment.
  • the material is treated anodically and cathodically in less aggressive electrolyte in one of the successive containers and only anodically in a second container in aggressive electrolyte.
  • the material can be subjected to at least two cathodic and two anodic treatments and, between the last cathodic and the following last anodic treatment, be introduced from one container into another container and cleaned of electrolyte which is also transported or neutralized.
  • the current support also in the last stage of pickling treatments, especially in the aggressive electrolyte, has the further favorable effect that a targeted material removal and a large reduction in the pickling loss can be achieved by controlling the current.
  • the voltage drop between the material to be treated and the last electrode along the passage of the material is determined and the material is removed from the pickling unit when a voltage jump is registered.
  • the voltage jump mentioned shows the removal of the material to be removed, i. H. of the scale, and signals that the surface of the material to be treated has been reached.
  • the material to be treated is passed through a container for the anodic treatment, the electrolyte of which contains aggressive ions, such as fluoride, chloride, sulfate or nitrate ions or any combination thereof.
  • aggressive ions such as fluoride, chloride, sulfate or nitrate ions or any combination thereof.
  • the device for carrying out the method comprises at least one treatment unit with at least two containers for aqueous electrolytes which follow one another in the direction of flow of the material, at least one electrode being provided in each container, and at least one anode being immersed in the first of the successive containers and all electrodes immediately subsequent containers are connected cathodically.
  • the device must in principle comprise at least two containers for electrolytes in succession in the direction of flow of the material, at least in the first container two electrodes of different polarity are provided.
  • the electrodes of the successive containers which are closest to one another then have different polarities.
  • the successive containers with electrodes of different polarity are preferably filled with aqueous electrolytes of different properties, in particular of different composition.
  • the first container is advantageously filled with neutral electrolyte or less aggressive electrolyte and the immediately following container with aggressive electrolyte, containing, for example, fluoride, chloride, sulfate or nitrate ions or any combination thereof.
  • At least one electrode of different polarity of two successive containers is advantageously connected to one another via a current source.
  • the circuit is produced in a simple circuit-technical manner, which leads from the current source via the first electrode and the electrolyte to the material to be treated, which in turn establishes the connection to the second electrode located in the other container.
  • the latter electrode is in turn connected to the power source.
  • the material to be treated in the case shown a metal strip or a metal wire, possibly also a profile, is designated by 1.
  • the belt 1 is transported and guided through the system by means of conventional driven and / or free-running rollers 2.
  • the strip is to be treated cathodically in a container 7, for example a conventional pickling tub.
  • a container 7 for example a conventional pickling tub.
  • two electrodes 4 lying opposite one another are provided, which are connected as anodes.
  • the tape 1 is passed between the two electrodes 4 and polarized cathodically.
  • a first electrolyte 3 for example a neutral electrolyte, such as an aqueous sodium sulfate solution.
  • lead electrodes are used as anodes, which are coated with a lead sulfate layer and thus have only slight wear.
  • the other matching pairings of electrolyte anion and electrode material chloride-graphite, ...) could also be used.
  • the electrodes 6 lying opposite one another are poled cathodically, i. H. protected in this way, and therefore inexpensive materials can be used.
  • the electrolyte 5 in this container 10 is usually a highly aggressive solution for pickling applications, which contains, for example, fluorine ions, chlorine ions, nitrate ions etc. and mixtures thereof. Mineral acids can be used, or neutral salt solutions containing the corresponding anions can be used.
  • the electrodes 4 of the first container 7 are preferably connected to the electrodes 6 of the second container 10 via a line 9 and via a current source 8.
  • the circuit is electrical through the one passing through conductive good 1 between the two containers 7 and 10 closed.
  • the current thus flows from the current source 8 via the line 9 to the electrodes, for example 6, from there through the electrolyte 5 to the belt 1, further over the belt from the container 10 to the container 7, where it flows again from the belt 1 to the one there Electrolytes 3 on the electrodes 4 and finally flows back via line 9 to the current source 8.
  • FIGS. 2a to 2c Other embodiments of the basic variant are shown in FIGS. 2a to 2c.
  • Fig. 2a the material to be treated is guided straight through the two containers 7, 10, and the guide rollers 2 serve at the same time to seal the containers 7, 10.
  • the connection of the two electrodes 4, 6 takes place in the same way as above described.
  • the material 1 to be treated is guided horizontally and is supported between the two treatment points by a pair of rollers 2, which serves here as a pair of squeezing rollers.
  • the treatment rooms are formed by the electrodes 4 and 6, which are arranged horizontally and through which the electrolyte liquids 3 and 5 flow.
  • the electrodes 4, 6 are connected to one another in a manner analogous to the previous examples via a current source 8 and the line 9.
  • FIG. 2c also works with flowing electrolytes.
  • the electrodes 4, 6 are arranged vertically and the material 1 to be treated is guided through the treatment cells via deflection and guide rollers.
  • FIG. 3 again shows a system corresponding to FIG. 1, but a cleaning unit 30 is provided between the two successive containers 7, 10.
  • this Cleaning unit 30 can be provided individually or in any combination of flushing devices 31, nozzles 32 for compressed air or other gaseous media or squeeze rollers 33. This cleaning unit 30 can prevent the electrolyte 3 from being dragged into the electrolyte 5.
  • FIG. 4 shows a treatment unit in which a further pair of cathodes and anodes 41, 42 is used in the container 7 in addition to the anodes 4.
  • These electrodes 41, 42 are connected to one another via a current source 43 and a line 44, while in a known manner the electrodes 4 are connected to the electrodes 6 in the subsequent container 10 via the current source 8 and line 9.
  • the material 1 to be treated is therefore treated alternately cathodically, anodically and again cathodically, while anodic treatment takes place in the container 10.
  • the container 7 is pickled with neutral electrolyte and the electrodes 41, 42 are already present.
  • 5a shows a variant of the invention, in which the electrolyte 5 in the container 10 has an effect on the band 1 to be treated, even without current being supported by the electrodes 6. This is the case, for example, with all electrolyte liquids that also have a chemical effect, such as, for example, with mineral acids. For this reason, the container 10 is larger than it should be provided for the purely electrically assisted treatment process and therefore there is also an area in the container 10 in which there are no electrodes and the electrolyte 5 in a purely chemical manner on the material to be treated acts.
  • a treatment with alternating polarity can also be provided in the variant 7 with electrolyte 5 which is also chemically active in the container 7.
  • the preferred embodiment for such a system would be a neutral electrolyte 3 in the container 7, the strip 1 being alternately treated cathodically, anodically and again cathodically in the sequence of the electrodes 41, 42, 4, while in the container 10 only cathodes 6 for anodic treatment of the bath are provided.
  • the electrolyte 5 in the container 10 is also chemically active again, which is why an area in the container 10 without electrodes 6, i. H. for treatment without power support.
  • FIG. 6a shows a first treatment unit a, which undergoes alternating cathodic, anodic and again cathodic treatment of the material 1 in a first electrolyte 3 and then anodic treatment in a second electrolyte 5.
  • the electrodes 4 and 6, which are arranged in different containers, are connected to one another.
  • the treatment unit b corresponds essentially to the basic variant with only one type of electrode 4 ', 6' in the associated containers.
  • cleaning units 30 are again preferably provided and between the two treatment units a, b described above is a container 60 with a treatment liquid which can serve to neutralize one of the electrolytes 5 or 3 'or which can be used for any desired intermediate treatment of the strip 1 is provided.
  • FIG. 6b Another example of two combined treatment units a, b is shown in FIG. 6b.
  • the treatment unit a corresponds to the basic variant, while the Treatment unit b comprises a container in which the electrolyte 5 'is also purely chemically active and therefore an area is provided in which no electrodes 6' are provided in the container.
  • a multi-stage rinsing system 61 for the material to be treated is shown. This is intended to indicate that not only the two systems 60, 61 shown, but that any treatment devices for the continuous material can be provided between individual successive treatment units which are constructed according to the invention.
  • FIG. 7 This is also exemplified by FIG. 7, in which four treatment units a, b, c, d are provided, each of which can be constructed in accordance with the invention and, for example, as in one of the figures described above. Between these individual treatment units a, b, c, d, which can be connected in any number in succession, there are any intermediate treatment units, which is shown by way of example in FIG. 7 by three rinsing units 61.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Electroplating Methods And Accessories (AREA)
EP92890135A 1991-06-10 1992-06-03 Procédé et dispositif de décapage électrolytique d'objets conducteurs électriques transportés en continu Withdrawn EP0518850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1160/91 1991-06-10
AT0116091A AT399167B (de) 1991-06-10 1991-06-10 Verfahren und vorrichtung zum elektrolytischen beizen von kontinuierlich durchlaufendem elektrisch leitendem gut

Publications (1)

Publication Number Publication Date
EP0518850A1 true EP0518850A1 (fr) 1992-12-16

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EP92890135A Withdrawn EP0518850A1 (fr) 1991-06-10 1992-06-03 Procédé et dispositif de décapage électrolytique d'objets conducteurs électriques transportés en continu

Country Status (9)

Country Link
US (1) US5382335A (fr)
EP (1) EP0518850A1 (fr)
JP (1) JP2984736B2 (fr)
KR (1) KR930000717A (fr)
AT (1) AT399167B (fr)
CA (1) CA2070583A1 (fr)
FI (1) FI100342B (fr)
TW (1) TW282492B (fr)
ZA (1) ZA924181B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763609A1 (fr) * 1995-09-15 1997-03-19 MANNESMANN Aktiengesellschaft Procédé et dispositif pour le traitement de produits sous forme de bande en acier inoxydable
EP0789095A1 (fr) * 1996-02-02 1997-08-13 MANNESMANN Aktiengesellschaft Procédé et système pour le traitement de bandes d'acier inoxydable
EP0838542A1 (fr) * 1996-10-25 1998-04-29 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé et dispositif pour le décapage électrolytique de bandes métalliques
DE19951325A1 (de) * 1999-10-20 2001-05-10 Atotech Deutschland Gmbh Verfahren und Vorrichtung zum elektrolytischen Behandeln von elektrisch gegeneinander isolierten, elektrisch leitenden Strukturen auf Oberflächen von elektrisch isolierendem Folienmaterial sowie Anwendungen des Verfahrens
DE102009061021B4 (de) * 2009-05-20 2015-05-07 VDM Metals GmbH Verfahren zur Herstellung einer Metallfolie
EP3382066A1 (fr) * 2017-03-31 2018-10-03 MKM Mansfelder Kupfer Und Messing Gmbh Procédé de fabrication d'un profilé de cuivre, profilé de cuivre et dispositif
IT201700097032A1 (it) * 2017-08-29 2019-03-01 Qualital Servizi Srl Impianto e procedimento per il trattamento elettrochimico in continuo di nastri in materiale metallico

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US5853561A (en) * 1997-06-23 1998-12-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for surface texturing titanium products
DE19834245B4 (de) * 1998-07-29 2007-05-03 Nütro Maschinen- und Anlagenbau GmbH & Co. KG Vorrichtung zum elektrolytischen Beschichten
IT1302202B1 (it) * 1998-09-11 2000-07-31 Henkel Kgaa Processo di decapaggio elettrolitico con soluzioni esenti da acidonitrico.
DE19951324C2 (de) * 1999-10-20 2003-07-17 Atotech Deutschland Gmbh Verfahren und Vorrichtung zum elektrolytischen Behandeln von elektrisch leitfähigen Oberflächen von gegeneinander vereinzelten Platten- und Folienmaterialstücken sowie Anwendung des Verfahrens
IT1317896B1 (it) * 2000-08-10 2003-07-15 Ct Sviluppo Materiali Spa Metodo di decapaggio elettrolitico continuo di prodotti metallici concelle alimentate a corrente alternata.
IT1318919B1 (it) * 2000-09-22 2003-09-19 Danieli Hi Tech Gmbh Processo e dispositivo per il trattamento elettrolitico superficialedi nastri di metallo.
AT413697B (de) * 2001-11-07 2006-05-15 Andritz Ag Maschf Verfahren zur behandlung säurehältiger abwässer
WO2006083955A2 (fr) * 2005-02-04 2006-08-10 Tokusen U.S.A., Inc. Procede de texturation de surfaces par electrolyse plasmique aqueuse
JP5880364B2 (ja) * 2012-09-05 2016-03-09 住友電気工業株式会社 アルミニウムめっき装置及びこれを用いたアルミニウム膜の製造方法
IT201800010280A1 (it) * 2018-11-13 2020-05-13 Koral Di Orlando Gianpaolo Metodo per il Trattamento di Superfici Metalliche

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FR2431554A1 (fr) * 1978-07-20 1980-02-15 Ruthner Industrieanlagen Ag Procede pour le decapage electrolytique de bandes laf d'acier inoxydable
US4391685A (en) * 1981-02-26 1983-07-05 Republic Steel Corporation Process for electrolytically pickling steel strip material
EP0235595A2 (fr) * 1986-03-01 1987-09-09 Hoesch Stahl Aktiengesellschaft Procédé, installation et dispositif de dégraissage et de nettoyage en continu de bandes de métaux, en particulier de bandes d'acier laminées à froid
EP0367112A1 (fr) * 1988-10-29 1990-05-09 Hitachi, Ltd. Procédé pour l'enlèvement de battitures d'acier inoxydable et dispositif à cet effet

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AT391486B (de) * 1988-09-14 1990-10-10 Andritz Ag Maschf Verfahren zum elektrolytischen beizen von edelstahlband
FR2646174B1 (fr) * 1989-04-25 1992-04-30 Pechiney Aluminium Procede et dispositif de revetement en continu de substrats conducteurs de l'electricite par electrolyse a grande vitesse
JPH03111598A (ja) * 1989-09-26 1991-05-13 Kobe Steel Ltd 冷間圧造用鋼線の製造方法

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FR2431554A1 (fr) * 1978-07-20 1980-02-15 Ruthner Industrieanlagen Ag Procede pour le decapage electrolytique de bandes laf d'acier inoxydable
US4391685A (en) * 1981-02-26 1983-07-05 Republic Steel Corporation Process for electrolytically pickling steel strip material
EP0235595A2 (fr) * 1986-03-01 1987-09-09 Hoesch Stahl Aktiengesellschaft Procédé, installation et dispositif de dégraissage et de nettoyage en continu de bandes de métaux, en particulier de bandes d'acier laminées à froid
EP0367112A1 (fr) * 1988-10-29 1990-05-09 Hitachi, Ltd. Procédé pour l'enlèvement de battitures d'acier inoxydable et dispositif à cet effet

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763609A1 (fr) * 1995-09-15 1997-03-19 MANNESMANN Aktiengesellschaft Procédé et dispositif pour le traitement de produits sous forme de bande en acier inoxydable
US5804056A (en) * 1995-09-15 1998-09-08 Mannesmann Aktiengesellschaft Process and apparatus for producing strip products from stainless steel
EP0789095A1 (fr) * 1996-02-02 1997-08-13 MANNESMANN Aktiengesellschaft Procédé et système pour le traitement de bandes d'acier inoxydable
EP0838542A1 (fr) * 1996-10-25 1998-04-29 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé et dispositif pour le décapage électrolytique de bandes métalliques
DE19951325A1 (de) * 1999-10-20 2001-05-10 Atotech Deutschland Gmbh Verfahren und Vorrichtung zum elektrolytischen Behandeln von elektrisch gegeneinander isolierten, elektrisch leitenden Strukturen auf Oberflächen von elektrisch isolierendem Folienmaterial sowie Anwendungen des Verfahrens
DE19951325C2 (de) * 1999-10-20 2003-06-26 Atotech Deutschland Gmbh Verfahren und Vorrichtung zum elektrolytischen Behandeln von elektrisch gegeneinander isolierten, elektrisch leitfähigen Strukturen auf Oberflächen von elektrisch isolierendem Folienmaterial sowie Anwendungen des Verfahrens
US6979391B1 (en) 1999-10-20 2005-12-27 Atotech Deutschland Gmbh Method and device for the electrolytic treatment of electrically conducting structures which are insulated from each other and positioned on the surface of electrically insulating film materials and use of the method
DE102009061021B4 (de) * 2009-05-20 2015-05-07 VDM Metals GmbH Verfahren zur Herstellung einer Metallfolie
EP3382066A1 (fr) * 2017-03-31 2018-10-03 MKM Mansfelder Kupfer Und Messing Gmbh Procédé de fabrication d'un profilé de cuivre, profilé de cuivre et dispositif
IT201700097032A1 (it) * 2017-08-29 2019-03-01 Qualital Servizi Srl Impianto e procedimento per il trattamento elettrochimico in continuo di nastri in materiale metallico

Also Published As

Publication number Publication date
FI922468A (fi) 1992-12-11
ZA924181B (en) 1993-02-24
JPH05202500A (ja) 1993-08-10
CA2070583A1 (fr) 1992-12-11
TW282492B (fr) 1996-08-01
US5382335A (en) 1995-01-17
ATA116091A (de) 1994-08-15
AT399167B (de) 1995-03-27
JP2984736B2 (ja) 1999-11-29
FI922468A0 (fi) 1992-05-29
KR930000717A (ko) 1993-01-15
FI100342B (fi) 1997-11-14

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