EP0454710B1 - Procede de deposition par electrolyse de metaux sur une face ou sur les deux faces de bandes - Google Patents

Procede de deposition par electrolyse de metaux sur une face ou sur les deux faces de bandes Download PDF

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Publication number
EP0454710B1
EP0454710B1 EP90901741A EP90901741A EP0454710B1 EP 0454710 B1 EP0454710 B1 EP 0454710B1 EP 90901741 A EP90901741 A EP 90901741A EP 90901741 A EP90901741 A EP 90901741A EP 0454710 B1 EP0454710 B1 EP 0454710B1
Authority
EP
European Patent Office
Prior art keywords
strip
anode
coated
portions
divided
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
EP90901741A
Other languages
German (de)
English (en)
Other versions
EP0454710A1 (fr
Inventor
Hans Josef May
Roland Schnettler
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 AG
Original Assignee
May Hans Josef
Schnettler Roland
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 May Hans Josef, Schnettler Roland filed Critical May Hans Josef
Publication of EP0454710A1 publication Critical patent/EP0454710A1/fr
Application granted granted Critical
Publication of EP0454710B1 publication Critical patent/EP0454710B1/fr
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

Definitions

  • the invention relates to a method for the electrolytic deposition of metals on the strips forming the cathode, preferably steel strips, in which the strip section to be coated is guided in an electrolyte in a gap between two non-soluble anodes arranged parallel to one another, one anode in several directions transverse to the strip running direction sections which are electrically insulated from one another are divided, each of which can be acted upon differently in a controlled manner in a controlled manner.
  • Both from DE-OS 30 17 079 and from JP-OS 1-17890 split anodes in the longitudinal direction of the strip are known in systems for coating strips on one or both sides.
  • For one-sided coating the anodes on the side opposite the strip side not to be coated are removed or switched off. It should be noted, however, that often a partial coating still takes place on the end side that is not to be coated. Similar defects also have corresponding systems according to JP-OS 63-259 098, with which one-sided coating of tapes is also intended to take place.
  • the object of the invention is, in a system operated with the method according to the preamble of claim 1, to keep the strip side which is not to be coated or an anode which is not participating in the coating free from metal precipitation.
  • the anode is switched off in a known manner. Since the anode is divided into several relatively small sections transversely to the direction of travel of the strip to be coated, only small voltage potentials can build up in these small sections compared to the total length of the anode, which deposition processes from the anode or deposition processes from the electrolyte are not or can only trigger to a small extent.
  • the corresponding division of the anode and its different electrical impingement proposed according to the invention enables control options which keep both the strip side which is not to be coated and the lower anode sections free of the undesired metal deposit.
  • anodic voltage For certain anodes, such as non-soluble anodes coated with iridium dioxide, it may be useful to apply anodic voltage to the individual sections of the anode sections, which are in principle voltage-free, that is to say “not working,” to lower the voltage required to trigger a deposition in order to achieve this Avoid passivation of the anode and at the same time avoid coating the strip side that is not to be coated.
  • An adapted anode application can be controlled in the individual anode sections.
  • an anode surface consists of lead
  • in one-sided coating operation on the side not to be coated precipitates at the end of the continuous strip section to be broken down again by deposition in the reverse direction, in which the anode section in the area of the outlet electrically, that is to say negatively with respect to the opposite strip section, the undesired precipitation is degraded on the side of the strip which is not to be coated, without a decisive precipitation occurring on the corresponding anode section.
  • the housing of such a cell is designated by the number 1.
  • the two anodes 3 and 4 are located in an approximately parallel arrangement to one another in the electrolyte bath, and the strip 8 to be coated runs through the gap formed between them. In this vertical arrangement, it runs from an upper deflection roller 5, possibly forming the current roller, to a lower roller 6 located in the electrolyte bath 2.
  • the insoluble anode 3 is to be regarded as homogeneous over its length, the other insoluble anode 4 is divided several times parallel to the direction of tape travel.
  • These anode sections which are preferably of equal size, bear the numbers 41, 42, 43 and 44. These sections are insulated from one another, for example by the plastic sections designated by the number 7.
  • Each anode section can be electrically acted on by the separate connections 410, 420, 430 and 440.
  • the corresponding control methods are preferably regulated and monitored, with different voltages or potentials being applied to the anode sections.
  • the processes described above prevent or reduce the precipitation on the side of the strip 8 that is not to be coated.

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)

Claims (3)

  1. Procédé pour le dépôt électrolytique de métaux sur des bandes, de préférence des bandes en acier, formant la cathode, suivant lequel le tronçon de bande à revêtir est guidé à l'intérieur d'une fente entre deux anodes non solubles disposées de manière parallèle l'une par rapport à l'autre au sein d'un électrolyte, une anode étant subdivisée transversalement à la direction de défilement de la bande en plusieurs segments qui sont isolés électriquement les uns vis-à-vis des autres et qui sont chacun alimentés électriquement de manière différente et contrôlée, caractérisé en ce que, pour le dépôt du métal sur une face de la bande (8), les segments d'anode (41, 42, 43, 44) de l'anode (4) subdivisée disposée du côté opposé à celui de la face de la bande soumise au revêtement sont au choix tenus libres ou mis sous des potentiels identiques ou différents, positifs ou négatifs par rapport à celui du tronçon de bande situé en face du segment d'anode respectif concerné.
  2. Procédé suivant revendication 1, caractérisé en ce que pour des segments d'entrée (41, 42, 43) de l'anode subdivisée (4) tenus exempts de courant, les segments (44), ou un seul d'entre eux, situés dans la région de sortie sont mis sous un potentiel de courant négatif par rapport à celui du tronçon de bande situé en face du segment d'anode respectif, de sorte qu'il se produit à partir de la face de la bande destinée à rester exempte de revêtement une érosion du revêtement intervenu.
  3. procédé suivant revendication 1, caractérisé en ce que des tensions positives faibles en comparaison à ceux du tronçon de bande respectif situé vis-à-vis sont appliquées aux différents segments de l'anode subdivisée non soluble, afin d'éviter une passivation.
EP90901741A 1989-01-21 1990-01-20 Procede de deposition par electrolyse de metaux sur une face ou sur les deux faces de bandes Expired - Lifetime EP0454710B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3901807 1989-01-21
DE3901807A DE3901807A1 (de) 1989-01-21 1989-01-21 Vorrichtung zum elektrolytischen abscheiden von metallen auf einer oder beiden seiten von baendern
PCT/DE1990/000035 WO1990008209A1 (fr) 1989-01-21 1990-01-20 Dispositif de deposition par electrolyse de metaux sur une face ou sur les deux faces de bandes

Publications (2)

Publication Number Publication Date
EP0454710A1 EP0454710A1 (fr) 1991-11-06
EP0454710B1 true EP0454710B1 (fr) 1994-11-02

Family

ID=6372568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90901741A Expired - Lifetime EP0454710B1 (fr) 1989-01-21 1990-01-20 Procede de deposition par electrolyse de metaux sur une face ou sur les deux faces de bandes

Country Status (8)

Country Link
US (1) US5322614A (fr)
EP (1) EP0454710B1 (fr)
JP (1) JPH04504444A (fr)
AT (1) ATE113671T1 (fr)
AU (1) AU4843090A (fr)
DE (2) DE3901807A1 (fr)
ES (1) ES2063958T3 (fr)
WO (1) WO1990008209A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510667A1 (de) * 1995-03-23 1996-09-26 Schloemann Siemag Ag Abscheidevorrichtung für Metalle aus einem metallhaltigen Elektrolyten
DE19717489B4 (de) * 1997-04-25 2008-04-10 Sms Demag Ag Anordnung zur elektrogalvanischen Metallbeschichtung eines Bandes
FR2765597B1 (fr) * 1997-07-02 1999-09-17 Kvaerner Metals Clecim Installation de revetement electrolytique de bandes metalliques, et anode pour une telle installation
JP3423631B2 (ja) * 1998-02-05 2003-07-07 キヤノン株式会社 酸化亜鉛薄膜の形成方法、それを用いた半導体素子基板の製造方法及び光起電力素子の製造方法
US6039858A (en) 1998-07-22 2000-03-21 International Business Machines Corporation Plating process for x-ray mask fabrication
SE529744C2 (sv) * 2005-12-22 2007-11-13 Abb Technology Ag Anordning och metod för metallisk beläggning samt användning av anordningen
DE102009041068A1 (de) * 2009-09-10 2011-03-24 GM Global Technology Operations, Inc., Detroit Vorrichtung sowie Verfahren zur galvanischen Abscheidung einer Schicht auf einen Gegenstand

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522166A (en) * 1967-04-21 1970-07-28 Reynolds Metals Co Electrical system for anodizing
US3970537A (en) * 1973-07-11 1976-07-20 Inland Steel Company Electrolytic treating apparatus
US3880725A (en) * 1974-04-10 1975-04-29 Rca Corp Predetermined thickness profiles through electroplating
US4240881A (en) * 1979-02-02 1980-12-23 Republic Steel Corporation Electroplating current control
DE3017079A1 (de) * 1980-05-03 1981-11-05 Thyssen AG vorm. August Thyssen-Hütte, 4100 Duisburg Vorrichtung zum elektroplattieren
JPS6056099A (ja) * 1983-09-05 1985-04-01 Fuji Photo Film Co Ltd 電解処理装置
DE3510592A1 (de) * 1985-03-23 1986-10-02 Hoesch Stahl AG, 4600 Dortmund Hochgeschwindigkeits-elektrolysezelle fuer die veredelung von bandfoermigem gut
JPS63259098A (ja) * 1987-04-15 1988-10-26 Sumitomo Metal Ind Ltd 連続電気メツキ設備のメツキ電流制御方法
JPS6417890A (en) * 1987-07-13 1989-01-20 Kawasaki Steel Co Method for controlling electroplating amount

Also Published As

Publication number Publication date
ES2063958T3 (es) 1995-01-16
DE59007643D1 (de) 1994-12-08
WO1990008209A1 (fr) 1990-07-26
DE3901807C2 (fr) 1993-08-26
AU4843090A (en) 1990-08-13
JPH04504444A (ja) 1992-08-06
DE3901807A1 (de) 1990-07-26
EP0454710A1 (fr) 1991-11-06
US5322614A (en) 1994-06-21
ATE113671T1 (de) 1994-11-15

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