EP0313607A1 - Electrode. - Google Patents

Electrode.

Info

Publication number
EP0313607A1
EP0313607A1 EP88903840A EP88903840A EP0313607A1 EP 0313607 A1 EP0313607 A1 EP 0313607A1 EP 88903840 A EP88903840 A EP 88903840A EP 88903840 A EP88903840 A EP 88903840A EP 0313607 A1 EP0313607 A1 EP 0313607A1
Authority
EP
European Patent Office
Prior art keywords
electrode
spacer
electrode according
spacer rollers
rollers
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
EP88903840A
Other languages
German (de)
English (en)
Other versions
EP0313607B1 (fr
Inventor
Heinrich Simon
Reinhard Koch
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.)
De Nora Deutschland GmbH
Original Assignee
Heraeus Elektroden GmbH
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 Heraeus Elektroden GmbH filed Critical Heraeus Elektroden GmbH
Priority to AT88903840T priority Critical patent/ATE89040T1/de
Publication of EP0313607A1 publication Critical patent/EP0313607A1/fr
Application granted granted Critical
Publication of EP0313607B1 publication Critical patent/EP0313607B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C25D7/0642—Anodes
    • 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
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C25D17/12—Shape or form

Definitions

  • the invention relates to an electrode for the electrochemical treatment of metal strips, in particular for the galvanic coating of metal strips, a plurality of spacer elements with an electrically insulating surface protruding from the electrode surface facing the strip to be treated during operation.
  • Such electrodes are generally known.
  • a system in which such electrodes are used is described, for example, in DE-OS 2234 424.
  • a metal strip to be coated is passed through a treatment chamber in which there is electrolyte liquid.
  • Electrodes connected as anodes are arranged along a horizontal plane, while the metal strip is at a negative potential.
  • the metal strip is guided under tension along the anodes at a distance.
  • Plants for the galvanic coating of metal strips are known in which the strip runs along the electrode at speeds of 60 to 80 m / min. It is precisely at such high speeds of these metal strips, which are up to about 0.8 mm thin, that vibrations occur which can lead to the metal strip coming into contact with the anodes, for example due to uneven pulling roller movement, with the result of a short circuit; the anodes are destroyed and errors occur in the metal strip to be coated.
  • insulating strips are provided transversely to the running direction of the metal strip or individual insulating knobs are inserted into the electrodes. It has been shown that these insulating strips or knobs are subject to heavy wear by touching the metal strip, so that they have to be replaced from time to time.
  • the present invention has for its object to provide an electrode which has an increased service life compared to the known electrodes.
  • the spacer elements are spacer rollers aligned in the same direction of travel and in that the roller diameter is between 20 and 60 mm.
  • the spacing rollers protruding from the surface reduce the friction between the metal strip and the spacing elements, since the spacing rollers are also rotated in the running direction of the strip when touched by the metal strip.
  • a diameter of the spacer rollers between 20 and 60 mm, preferably between 25 and 45 mm, has proven to be suitable. There is practically no wear on the spacer rollers.
  • the spacer rolls should protrude 3 to 15 mm above the surface facing the band to be treated.
  • the spacer rollers are interchangeably mounted, as a result of which the electrode surfaces are freely accessible.
  • An arrangement of the spacer rollers on a bearing block with a detachable bearing bolt is suitable for this, the axis of rotation of the spacer rollers preferably being below the electrode part which forms the active electrode surface. In this arrangement, the bearing pin is easily accessible for replacement.
  • 25 to 100 spacer rolls per square meter are preferably distributed over the electrode. For spacer rolls protruding only slightly above the electrode surface, the number of spacer rolls should be between 80 and 100 per square meter.
  • the spacer rollers are arranged offset from one another.
  • the spacer rollers are preferably made of polyethylene.
  • FIG. 3 shows a section along the section line III-III in FIG.
  • the electrode shown in FIG. 1, which forms a rectangle from its external dimensions, has a large number of recesses 1, into which spacer rollers 2 are inserted.
  • the spacer rollers 2 made of polyethylene are oriented in such a way that they point with their direction of travel in the direction of passage of a metal strip, not shown, indicated above by the arrow 3. In the direction of arrow 3 and seen perpendicularly thereto, the spacer rollers 2 are arranged offset from one another, so that the electrolyte flowing past mixes well.
  • Adjacent spacer rolls 2 have an average spacing of approximately 10 cm from one another, which results in a number of spacer rolls 2 of approximately 90 to 100 spacer rolls per square meter distributed over the surface of the electrode.
  • the storage of the individual electrodes is illustrated in Figures 2 and 3.
  • the electrode shown is a rod electrode.
  • This rod electrode has individual rods aligned parallel to one another, which are connected to one another by a plurality of current distribution rods 5 on their upper side.
  • the individual spacer rollers 2 are on one.
  • Bearing bracket 6 held, which consists of two carriers 7 which are welded to the power distribution rod 5.
  • the spacer roller 2 is detachably held on this carrier 7 of the bearing block 6 by a bearing pin 8.
  • the bearing pin 8 is secured by pins 10 which are inserted into the bores 9.
  • the spacer roller 2 extends through a recess 11 which is formed by interrupting two rods 4.
  • the spacer roller 2 protrudes, indicated by the arrows 12, 4 mm above the surface 13 of the electrode.
  • the metal strip 14 to be coated is in this embodiment at a distance, designated by the reference numeral 15, of 15 mm. passed the surface 13 of the electrode.
  • the diameter of the spacer roll 2 is 60 mm.

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)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

On connaît des électrodes pour le traitement électrochimique de feuillards métalliques (14), notamment pour le revêtement électrolytique de ces derniers, dans lesquelles plusieurs éléments d'espacement à surface électro-isolante dépassent de la surface (13) desdites électrodes tournée en service vers le feuillard à traiter. Dans le but de réaliser une électrode présentant une longévité accrue par rapport aux électrodes connues, les éléments d'espacement sont des rouleaux (2) alignés les uns par rapport aux autres dans le même sens de rotation et leur diamètre est compris entre 20 et 60 mm.
EP88903840A 1987-05-13 1988-05-06 Electrode Expired - Lifetime EP0313607B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88903840T ATE89040T1 (de) 1987-05-13 1988-05-06 Elektrode.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8706827U 1987-05-13
DE8706827U DE8706827U1 (de) 1987-05-13 1987-05-13 Elektrode

Publications (2)

Publication Number Publication Date
EP0313607A1 true EP0313607A1 (fr) 1989-05-03
EP0313607B1 EP0313607B1 (fr) 1993-05-05

Family

ID=6807960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903840A Expired - Lifetime EP0313607B1 (fr) 1987-05-13 1988-05-06 Electrode

Country Status (5)

Country Link
US (1) US4946571A (fr)
EP (1) EP0313607B1 (fr)
AT (1) ATE89040T1 (fr)
DE (2) DE8706827U1 (fr)
WO (1) WO1988008889A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476578A (en) * 1994-01-10 1995-12-19 Electroplating Technologies, Ltd. Apparatus for electroplating
US5837120A (en) * 1994-09-30 1998-11-17 Electroplating Technologies, Inc. Method and apparatus for electrochemical processing
DE4417551C2 (de) * 1994-05-19 1996-04-04 Atotech Deutschland Gmbh Elektrolytisches Verfahren zum präzisen Behandeln von Leiterplatten und Vorrichtung zur Durchführung des Verfahrens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271736A (en) * 1939-06-28 1942-02-03 Hanson Van Winkle Munning Co Strip treating apparatus
DE3146850C2 (de) * 1981-11-26 1985-12-05 Dr. C. Otto & Co Gmbh, 4630 Bochum Vorrichtung zur Führung von Bändern in elektrolytischen Behandlungsanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8808889A1 *

Also Published As

Publication number Publication date
US4946571A (en) 1990-08-07
DE8706827U1 (de) 1987-07-02
DE3880783D1 (de) 1993-06-09
WO1988008889A1 (fr) 1988-11-17
EP0313607B1 (fr) 1993-05-05
ATE89040T1 (de) 1993-05-15

Similar Documents

Publication Publication Date Title
DE2363149B2 (de) Elektroabscheider
DE19711342A1 (de) Aktive Entladeelektrode
DE3518236A1 (de) Vorrichtung zum haltern einer mehrzahl von kondensatoren
EP0039453B1 (fr) Dispositif d'électrodéposition
EP0971851B1 (fr) Dispositif de mise en charge electrostatique
EP0313607B1 (fr) Electrode
DE4139066A1 (de) Vorrichtung zum elektrolytischen metallabscheiden auf metallbaendern
DE69026790T2 (de) Leitfähigkeitsmessgerät
EP0801153B1 (fr) Procédé et dispositif pour le traitement électrolytique d'objets transportés en continu
DE1964659B2 (de) Verfahren zum Orientieren von elektrisch leitenden, vorzugsweise unmagnetischen Körpern
DE3152216C2 (fr)
DE3419503C2 (fr)
DE1956312B2 (de) Verfahren und vorrichtung zum gleichfoermigen elektrostatischen aufladen einer bewegten flaeche
DE3924890C2 (fr)
DE2222844A1 (de) Vorrichtung zum behandeln von partien im inneren eines menschlichen oder tierischen koerpers mit elektrischem gleichstrom
WO1988000626A1 (fr) Glissiere de contact pour arrets de fils electriques
DE1497132C3 (de) Koronaaufladeeinrichtung für elektrophotographische Aufzeichnungsmaterialien
DE83535C (fr)
DE3729304C2 (fr)
DE696057C (de) Vorrichtung zum Pruefen von Textilien und anderen Stoffen
DE670115C (de) Anode fuer elektrolytische Metallgewinnungsbaeder mit bandfoermigem Metallaustrag
DE2728366A1 (de) Galvanisiertrommel fuer relativ grosse werkstuecke
Chaichian et al. Book-Review-Introduction to Gauge Field Theories
DE1548539A1 (de) Verfahren zur Bestimmung der Koordinaten eines in einem Kreuzungspunkt eines Rasterfeldes liegenden Punktes
DE2406354C3 (de) Vorrichtung zum elektrischen Lesen eines Informationsträgers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880907

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT NL

17Q First examination report despatched

Effective date: 19910214

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HERAEUS ELEKTROCHEMIE GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930505

Ref country code: FR

Effective date: 19930505

Ref country code: NL

Effective date: 19930505

Ref country code: GB

Effective date: 19930505

Ref country code: BE

Effective date: 19930505

REF Corresponds to:

Ref document number: 89040

Country of ref document: AT

Date of ref document: 19930515

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19930506

REF Corresponds to:

Ref document number: 3880783

Country of ref document: DE

Date of ref document: 19930609

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930505

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940201

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed