EP0922791A1 - Elektroplattierungsanlage, Elektrode und Gegenhalter dafür und Elektroplattierungsverfahren - Google Patents

Elektroplattierungsanlage, Elektrode und Gegenhalter dafür und Elektroplattierungsverfahren Download PDF

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Publication number
EP0922791A1
EP0922791A1 EP98402805A EP98402805A EP0922791A1 EP 0922791 A1 EP0922791 A1 EP 0922791A1 EP 98402805 A EP98402805 A EP 98402805A EP 98402805 A EP98402805 A EP 98402805A EP 0922791 A1 EP0922791 A1 EP 0922791A1
Authority
EP
European Patent Office
Prior art keywords
electrodes
support
bath
interface
bearing
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
Application number
EP98402805A
Other languages
English (en)
French (fr)
Other versions
EP0922791B1 (de
Inventor
Philippe Gheeraert
Jean-Marie Vienne
Bernard Vandenbussche
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0922791A1 publication Critical patent/EP0922791A1/de
Application granted granted Critical
Publication of EP0922791B1 publication Critical patent/EP0922791B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C25D7/0635—In radial cells
    • 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
    • C25D17/005—Contacting devices
    • 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
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • the invention relates, in the bath of an electroplating installation, the support of the submerged electrodes and the supply of current to these electrodes, especially in the case of electrodes which are soluble anodes and consumables and must be interchangeable during plating.
  • An installation of this type is for example an installation electrogalvanizing of steel strips in an electrolytic bath based on chlorides.
  • soluble anodes of zinc or zinc alloy For electrogalvanizing in a chloride medium, generally soluble anodes of zinc or zinc alloy.
  • the electrodes 3 are formed by curved bars facing the roller 1 along the direction of travel of the strip and are grouped in sets of electrodes arranged side by side so as to form a portion of cylindrical generator partially enveloping the roller 1 in the electroplating bath, as illustrated in Figures 1 and 2.
  • each support member 2, 4 is common to all the electrodes 3 of the same set; more specifically in the example given here, each support member 2, 4 is formed of an oriented beam transversely to the strip running path on which come lean all the electrodes 3 of a set and each electrode 3 is retained against this beam by means of an electrode hook 31.
  • the electrodes 3 are consumable (case of soluble anodes), their thickness varies (see Figure 3) depending on the level of wear and should be to be able to change them during plating as they are dissolution.
  • the electrodes 3 are made to slide. of the same clearance on the support members 2, 4 respectively in the directions A, B (see Figure 3), so as to remove a worn electrode at one end of the beam while leaving a place for a new electrode at the other end.
  • each electrode 3 only rests by simple support by its own weight on its support member 2, 4 at the level interface 6; the electrodes therefore rest freely on their organ support.
  • the support member also serves to supply all the electrodes of a set in electroplating electric current.
  • the pressure exerted at the interface 6 on the support member generally does not exceed 10 4 Pa, or 1 Newton per cm 2 of bearing surface.
  • this bearing force can even be less than 0.1 Newton per cm 2 of bearing surface (10 3 Pa).
  • bearing surface is meant the total area at the interface 6 between the electrode and the support member.
  • the object of the invention is to reduce the electrical contact losses at level of the interfaces 6 and of increasing the lifetime of the support members 2, 4 of the electrodes 3.
  • the invention therefore also relates to a support and supply member.
  • current for electrodeposition electrodes provided with a bearing surface, sliding and electrical contact with said electrodes, characterized in that said surface has grooves.
  • this support member mainly consists of graphite at the level of said surface.
  • the invention therefore also relates to an electrodeposition electrode intended to rest on a support member, provided with a support surface, sliding and electrical contact with said member, characterized in that said surface has grooves.
  • this electrode consists essentially of zinc or zinc alloy.
  • the invention also relates to a method of electrodeposition in the installation according to the invention, characterized in that, during the electrodeposition operation and at the level of said interface, the bearing force of said electrodes immersed on said organs support is less than 1 Newton per cm 2 of support surface and bearing surface, or even less than 0.1 Newton per cm 2 .
  • a support member 2 of electrode 3 is shown in FIG. 7.
  • the contact surface 6B of the support member has grooves 7; a groove detail 7 is shown in Figure 7A; these grooves 7 are never closed, even when electrodes 3 are in support on the surface 6B; so they lead into the bath when the installation is in operation.
  • the width and density of the grooves 7 is adapted to that the total area of the grooves does not represent more than 30% of the area bearing 6B.
  • the present invention also relates to the case where the grooves are made on the bearing surface 6A of the electrode.
  • the present invention also relates to the more general case where the interface 6 is adapted, at the support surface 6A from electrodes and / or of the bearing surface 6B of the support member 2, 4, to spare, in the interface 6, grooves 7 opening into said bath.
  • the electroplating installation includes a support interface (6) having grooves (7) opening into the bath.
  • the invention applies to all types of electroplating installation where the electrical contact between the electrodes and their supporting members is immersed in the bath, the essential means of the invention residing in the presence of grooves opening into the bath at the electrical contact interface 6.

Landscapes

  • 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)
  • Electrolytic Production Of Metals (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP98402805A 1997-12-03 1998-11-13 Elektroplattierungsanlage, Verwendung von Elektrode und Gegenhalter dafür und Elektroplattierungsverfahren Expired - Lifetime EP0922791B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715179A FR2771757B1 (fr) 1997-12-03 1997-12-03 Installation d'electrodeposition, electrode et organe d'appui pour cette installation et procede d'electrodeposition
FR9715179 1997-12-03

Publications (2)

Publication Number Publication Date
EP0922791A1 true EP0922791A1 (de) 1999-06-16
EP0922791B1 EP0922791B1 (de) 2003-03-05

Family

ID=9514070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402805A Expired - Lifetime EP0922791B1 (de) 1997-12-03 1998-11-13 Elektroplattierungsanlage, Verwendung von Elektrode und Gegenhalter dafür und Elektroplattierungsverfahren

Country Status (7)

Country Link
US (2) US6129820A (de)
EP (1) EP0922791B1 (de)
JP (1) JPH11229197A (de)
AT (1) ATE233835T1 (de)
DE (1) DE69811836T2 (de)
ES (1) ES2192313T3 (de)
FR (1) FR2771757B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771757B1 (fr) * 1997-12-03 1999-12-31 Lorraine Laminage Installation d'electrodeposition, electrode et organe d'appui pour cette installation et procede d'electrodeposition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052384A1 (de) * 1980-11-15 1982-05-26 Metallgesellschaft Ag Lösbarer Anschlusskontakt für Hochstromleiter in Elektrolysevorrichtungen
EP0140474A1 (de) * 1983-10-07 1985-05-08 Kawasaki Steel Corporation Gegenstromanordnung für eine Galvanisiervorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR52384E (fr) 1942-11-24 1943-03-14 Phrix Arbeitsgemeinschaft Procédé de fabrication de laine synthétique bouclée d'après le procédé à la viscose
DE2324834C2 (de) * 1973-05-17 1978-09-07 Dr. Eugen Duerrwaechter Doduco, 7530 Pforzheim Vorrichtung zum kontinuierlichen selektiven Bandgalvanisieren
FR2653787B1 (fr) * 1989-10-27 1992-02-14 Lorraine Laminage Installation et procede de revetement electrolytique d'une bande metallique.
US5228965A (en) * 1990-10-30 1993-07-20 Gould Inc. Method and apparatus for applying surface treatment to metal foil
US5685970A (en) * 1992-07-01 1997-11-11 Gould Electronics Inc. Method and apparatus for sequentially metalized polymeric films and products made thereby
FR2771757B1 (fr) * 1997-12-03 1999-12-31 Lorraine Laminage Installation d'electrodeposition, electrode et organe d'appui pour cette installation et procede d'electrodeposition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052384A1 (de) * 1980-11-15 1982-05-26 Metallgesellschaft Ag Lösbarer Anschlusskontakt für Hochstromleiter in Elektrolysevorrichtungen
EP0140474A1 (de) * 1983-10-07 1985-05-08 Kawasaki Steel Corporation Gegenstromanordnung für eine Galvanisiervorrichtung

Also Published As

Publication number Publication date
US6334943B1 (en) 2002-01-01
DE69811836D1 (de) 2003-04-10
EP0922791B1 (de) 2003-03-05
DE69811836T2 (de) 2004-05-19
ES2192313T3 (es) 2003-10-01
JPH11229197A (ja) 1999-08-24
FR2771757A1 (fr) 1999-06-04
US6129820A (en) 2000-10-10
FR2771757B1 (fr) 1999-12-31
ATE233835T1 (de) 2003-03-15

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