EP0695818B1 - Procédé et dispositif pour traitement de surface électrolytique - Google Patents

Procédé et dispositif pour traitement de surface électrolytique Download PDF

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Publication number
EP0695818B1
EP0695818B1 EP95250142A EP95250142A EP0695818B1 EP 0695818 B1 EP0695818 B1 EP 0695818B1 EP 95250142 A EP95250142 A EP 95250142A EP 95250142 A EP95250142 A EP 95250142A EP 0695818 B1 EP0695818 B1 EP 0695818B1
Authority
EP
European Patent Office
Prior art keywords
strip
electrolyte
electrodes
working electrodes
surface treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95250142A
Other languages
German (de)
English (en)
Other versions
EP0695818A1 (fr
Inventor
Franz Gerhard Ing. Pempera
Michael Dipl.-Ing. Haentjes
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0695818A1 publication Critical patent/EP0695818A1/fr
Application granted granted Critical
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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
    • 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 an electrolytic Surface treatment method and a device for carrying it out of the method, in particular for pickling, cleaning and degreasing fast-running metal strips, preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte, the the tape runs horizontally, with above and below the tape electrodes are arranged one behind the other in the tape running direction are alternately connected anodically or cathodically.
  • fast-running metal strips preferably cold-rolled steel strips, consisting of at least one container holding the electrolyte, the the tape runs horizontally, with above and below the tape electrodes are arranged one behind the other in the tape running direction are alternately connected anodically or cathodically.
  • EP-A-02 35 595 A known system of this type is described in EP-A-02 35 595. It is used to clean tapes and in combination with mechanical agents acting on the belt surface.
  • the entire electrolytic process is usually carried out in at least one Carried out in which the electrodes and also the tape covering electrolyte necessary for the electrolytic process is included.
  • the electrolyte is usually pumped to the Container fed.
  • the electrodes located above and below the band are designated one generally as working electrodes, to which the tape as Counter electrode acts. This procedure is also called Medium conductor method known. If, as is known, the electrodes of both All sides of the tape have the same polarity the belt surface, regardless of which side of the belt they are on, the same polarity. Are the working electrodes all positive (anodically) switched, the strip surface acts as a negative pole (Cathode) - or vice versa.
  • the invention is based on the problems described and Disadvantages of the prior art, based on the task electrolytic surface treatment method and a plant for Implementation of the procedure to create an effective Surface treatment of the tape in a short time and with less Contamination of the electrolyte can be carried out.
  • the invention proposes that the Areas between two neighboring electrodes are different Circuit and the top and bottom of the tape kept electrolyte-free because only such (galvanic) isolation can cause a "leakage current" between the working electrodes.
  • the invention is based on the idea that, if successful, the through the electrolyte formed bridge between cathode and anode (the Working electrode) to interrupt, little or no electrical current can flow directly from the cathode to the anode. Thereby the effectiveness of the system is increased because now the entire electrical current is available for the strip treatment, so that a more effective treatment and therefore shorter treatment times can be reached. If, according to the invention, the areas between band and the neighboring electrodes are kept free of electrolyte, so can also no contamination with the tape in the next Electrolyte half cell are transported.
  • the electrolyte from the area between two neighboring electrodes is ousted.
  • Each pair of electrodes is preferably assigned four nozzle bars, which Apply the top and bottom of the belt in pairs.
  • the arrangement of the nozzle bars in front of and behind you Electrode package becomes the affected area in Tape running direction sealed, on the other hand is created by the Turbulence between the working electrode and the band passing through the current the electrolyte considerably easier and thus the actual one Treatment step optimized accordingly.
  • To get injected To allow an amount of electrolyte to escape is above each Electrode package provided an overflow over which the amount from the Nozzle sticks is fed back to the assigned reservoir.
  • quantity or pressure of the injected electrolyte to guide the tape are adjustable relative to the electrodes.
  • the above and below Injection of the electrolyte provided for the strip guides the strip at the same time at a short distance of, for example, 20 to 60 mm between tape and electrodes. The distance is changed by Amount or pressure of the electrolyte variable.
  • 1 denotes a container through which to treating band 2 is guided in the horizontal direction.
  • deflection and guide rollers 3 and 4 indicated that define the position of the tape in the container.
  • 5 and 6 are arranged above and below the band 2 Working electrodes called, anodic at 5 and cathodic at 6 are switched. As can be seen, each change in the longitudinal direction of the strip anodically connected working electrodes with cathodically connected Working electrodes.
  • FIG. 1 shows the solution of the invention, the same parts being the same are designated.
  • each working electrode is 5, 6 assigned a nozzle tube, which is inclined towards the working electrode 5, 6 and is arranged inclined towards the surface of the tape and by the Electrolyte is injected. This will cause the electrolyte in the area of each opposite working electrodes 5, 6 held while in the band area 9 between the adjacent working electrodes or Working electrode pairs the band to be treated almost free of Electrolyte is on the surface.
  • Additional partitions 10 in the container divide the container 1 into areas so that contamination of the Electrolytes on the container area below each Working electrode package remains limited.
  • the invention ensures that the areas 9 between the Working electrode pairs 8 are kept free of electrolyte, so that no short-circuit currents between the cathode and the anode series-connected working electrodes can flow. Thereby the full electrical effect for treating the tape is retained. This way not only the quality of the Improve surface treatment process, it can also Treatment speed can be increased and thus the productivity of the Plant can be increased.

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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)
  • Electroplating Methods And Accessories (AREA)

Claims (5)

  1. Procédé de traitement de surface électrolytique - particulièrement pour décaper, nettoyer et dégraisser des feuillards métalliques, de préférence de l'acier laminé à froid, avançant rapidement - consistant en au moins une cuve, qui vient prendre l'électrolyte, que le feuillard parcourt horizontalement, dans laquelle des électrodes sont disposées l'une à la suite de l'autre au-dessus et au-dessous du feuillard dans son sens de progression, et dans laquelle des électrodes respectivement connectées anodiquement et cathodiquement alternent dans le sens longitudinal du feuillard,
       caractérisé en ce que,
       les zones entre deux électrodes latéralement voisines de connexion différente ainsi que les côtés supérieur et inférieur du feuillard sont maintenus exemptes d'électrolyte.
  2. Procédé de traitement de surface électrolytique selon la revendication 1,
       caractérisé en ce que,
       l'électrolyte est chassé des zones.
  3. Installation pour mettre en oeuvre le procédé selon la revendication 1,
       caractérisée en ce que,
       plusieurs bras de tuyaux à buses (8) sont disposés entre les électrodes de travail (5, 6), pour injecter du liquide électrolytique obliquement à la surface du feuillard et dans le sens des électrodes de travail (5, 6) respectivement voisines.
  4. Installation selon la revendication 3,
       caractérisée en ce que,
       quatre bras de tuyaux à buses (8), qui alimentent respectivement par paires le côté inférieur et le côté supérieur du feuillard (2), sont associés à chaque paire d'électrodes de travail (5, 6).
  5. Installation selon les revendications 3 et 4,
       caractérisée en ce que,
       la quantité et/ou la pression de l'électrolyte injecté, intervenant dans le contrôle du feuillard (2) par rapport aux électrodes de travail (5, 6), sont réglables.
EP95250142A 1994-07-07 1995-06-14 Procédé et dispositif pour traitement de surface électrolytique Expired - Lifetime EP0695818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4425854A DE4425854C1 (de) 1994-07-07 1994-07-07 Elektrolytisches Oberflächenbehandlungsverfahren und Anlage zur Durchführung des Verfahrens
DE4425854 1994-07-07

Publications (2)

Publication Number Publication Date
EP0695818A1 EP0695818A1 (fr) 1996-02-07
EP0695818B1 true EP0695818B1 (fr) 1998-04-08

Family

ID=6523791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95250142A Expired - Lifetime EP0695818B1 (fr) 1994-07-07 1995-06-14 Procédé et dispositif pour traitement de surface électrolytique

Country Status (5)

Country Link
US (1) US5584984A (fr)
EP (1) EP0695818B1 (fr)
JP (1) JP3813998B2 (fr)
DE (2) DE4425854C1 (fr)
FI (1) FI110367B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660708A (en) * 1994-11-21 1997-08-26 Sumitomo Metal Mining Company, Limited Process for manufacturing a lead frame
DE19702639C1 (de) * 1997-01-25 1998-06-18 Sundwiger Eisen Maschinen Vorrichtung und Verfahren zum kontinuierlichen chemischen Entzundern von Metallband
JP2000064100A (ja) 1998-08-24 2000-02-29 Hitachi Ltd 鋼帯の脱スケ−ル装置及び鋼帯の製造装置
US6203691B1 (en) 1998-09-18 2001-03-20 Hoffman Industries International, Ltd. Electrolytic cleaning of conductive bodies
US6265020B1 (en) * 1999-09-01 2001-07-24 Shipley Company, L.L.C. Fluid delivery systems for electronic device manufacture
IT1318919B1 (it) * 2000-09-22 2003-09-19 Danieli Hi Tech Gmbh Processo e dispositivo per il trattamento elettrolitico superficialedi nastri di metallo.
DE102004029894B3 (de) * 2004-06-17 2005-12-22 Atotech Deutschland Gmbh Vorrichtung und Verfahren zum elektrolytischen Behandeln von elektrisch gegeneinander isolierten, elektrisch leitfähigen Strukturen auf Oberflächen von flachem Behandlungsgut
AT413707B (de) * 2004-07-19 2006-05-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum beizen von metallen
ITMI20130497A1 (it) * 2013-03-29 2014-09-30 Tenova Spa Apparato per il trattamento elettrolitico superficiale in continuo di semilavorati metallici, in particolare semilavorati metallici piatti.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165326A (en) * 1934-10-30 1939-07-11 Hanson Van Winkle Munning Co Electrolytic treatment of ferrous metals
US3558460A (en) * 1966-01-26 1971-01-26 Nippon Steel Corp Process for surface treatment of steel strip
CH594067A5 (fr) * 1973-10-04 1977-12-30 Galentan Ag
AR204283A1 (es) * 1975-01-21 1975-12-10 Uss Eng & Consult Aparato para el tratamiento electrolitico de tiras de metal
JPS5594492A (en) * 1979-01-12 1980-07-17 Nippon Kokan Kk <Nkk> Fluidizing method for liquid by jet stream between parallel flat board
FR2551467B1 (fr) * 1983-09-07 1987-02-06 Sumitomo Metal Ind Procede et appareil permettant de realiser un depot electrolytique continu d'alliages
DE3606750A1 (de) * 1986-03-01 1987-09-03 Hoesch Stahl Ag Verfahren, anlage und vorrichtung zum kontinuierlichen entfetten und reinigen der oberflaeche von metallbaendern, insbesondere kaltgewalztem bandstahl
BE1005217A3 (fr) * 1990-10-08 1993-06-01 Four Industriel Belge Procede et dispositif de degraissage et de decapage de fils ou rubans metalliques ou d'elements analogues.

Also Published As

Publication number Publication date
EP0695818A1 (fr) 1996-02-07
FI110367B (fi) 2002-12-31
FI953316A (fi) 1996-01-08
JP3813998B2 (ja) 2006-08-23
FI953316A0 (fi) 1995-07-05
DE4425854C1 (de) 1995-11-09
DE59501827D1 (de) 1998-05-14
JPH08100299A (ja) 1996-04-16
US5584984A (en) 1996-12-17

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