EP0065059A1 - Anode zum Plattieren mit einer Stromabnehmerbürste - Google Patents

Anode zum Plattieren mit einer Stromabnehmerbürste Download PDF

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Publication number
EP0065059A1
EP0065059A1 EP81850088A EP81850088A EP0065059A1 EP 0065059 A1 EP0065059 A1 EP 0065059A1 EP 81850088 A EP81850088 A EP 81850088A EP 81850088 A EP81850088 A EP 81850088A EP 0065059 A1 EP0065059 A1 EP 0065059A1
Authority
EP
European Patent Office
Prior art keywords
anode
net
plate
brush
cavity
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.)
Ceased
Application number
EP81850088A
Other languages
English (en)
French (fr)
Inventor
Kaj-Ragnar Loqvist
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.)
WEDAB WAVE ENERGY DEVELOPMENT AB
Original Assignee
WEDAB WAVE ENERGY DEVELOPMENT AB
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 WEDAB WAVE ENERGY DEVELOPMENT AB filed Critical WEDAB WAVE ENERGY DEVELOPMENT AB
Priority to EP81850088A priority Critical patent/EP0065059A1/de
Publication of EP0065059A1 publication Critical patent/EP0065059A1/de
Ceased 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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C25D17/14—Electrodes, e.g. composition, counter electrode for pad-plating

Definitions

  • the invention relates to an anode for electrolytic brush-plating processes, comprising an anode body made of an electrically non-conducting material.
  • the brush-plating method comprise an electrically conductive central body, which is preferably made of graphite and which is wound with polypropylene-wool, whose function is to act as a carrier for the electrolyte and to serve as a spacer between anode and cathode.
  • An object of the present invention is to provide an anode for electrolytic brush-plating processes by means of which the aforementioned disadvantages encountered when using known anodes are eliminated.
  • the anode according to the present invention is characterized by an anode body of electrically non-conductive material, whereat on the anode body is arranged at least one anode plate of electrically conductive material, and a spacer in the form of an electrically non-conducting strip or net which forms the brush of the anode.
  • the anode is constructed of anode elements, each of which can be replaced. This affords the technical advantage whereby the plating rate can be increased up to ten times while increasing the reliability of the method, due to the fact that the anode is self-centering in the cathode, or vice versa.
  • the body of the anode is constructed of elements of an electrically non-conductive material, it has been possible to increase the electrolyte conversion from two to four times, because the electrolyte obtains greater space, without disturbing the distance between the anode and the cathode.
  • the distance between the anode and cathode should, namely, be as small as possible, thereby to reduce the resistance in the liquid so that the increase of temperature is minimal. Further, one and the same anode can be re-adjusted, thereby enabling the anodes to be used with cathodes of mutually differing diameters.
  • FIG. 1a and 1b Illustrated in Figures 1a and 1b is a rod-like anode body 1 made of an electrically non-conductive material and movably arranged in a tube 2 whose internal surface is to be plated and which acts as a cathode.
  • the anode body has a diametrically extending groove 6 in which there is arranged a wire 3 (i.e. a polypropylene net) in a manner such that said wire covers an anode plate 4, which is electrically conductive.
  • Plating of the inner surface of the tube 2 is effected within the area 8 between the anode plate 4 and the tube 2, where the least possible distance therebetween is obtained. This distance is only dependent on the wire 3.
  • the invention enables worn parts, i.e. the anode plate 4 and the wire 3, to be replaced.
  • one and the same anode body 1 can be used together with cathodes of widely varying diameters, and the change of electrolyte requiring another grade of material in the anode plate 4 can also be effected in a rational and simple fashion.
  • the anode plate 4 extends in the longitudinal direction of the anode is selected with regard to the length of the plated workpiece (the tube), and may be straight or of helical configuration.
  • the anode comprises two plates 4, which are suspended in cavities 7 in the diametrically extending groove 6.
  • Figures 2a and 2b illustrate a tubular anode body 21 of electrically non-conductive material, said body being arranged for movement about the workpiece 22 to be plated (for example a rod).
  • the anode body is provided with slots 26 through which tongues 28 of an anode plate 24 and a wire 23 extend into the anode body 21.
  • the wire 23 lies between the anode plate 24 and the plated workpiece 22.
  • the illustrated embodiment has two anode plates 24 and associated wires 23.
  • Figures la, 1b and 2a, 2b illustrate two preferred embodiments of the invention, it will be understood that other embodiments of the invention are conceivable.
  • the anode plates may be joined together while the wire comprises two separate parts. It is also possible for both the anode plate and the wire to be joined together, the essential feature being that the anode plates are located relative to the workpiece to be plated with the least possible distance between the anode and the cathode.
  • An anode according to the invention can also be used for plating flat sheet-like pieces, the main principal feature being the same as that for the external and internal plating of tubular workpieces, the one difference being that the anode body is not curved. Surfaces which exhibit double-curves can also be plated, the main feature being that the anode plates are resilient.
  • the anode may be so journalled that when it rotates the anode body 51 moves forwards and backwards. In this way, the anode plates follow a curved surface and the plated sheet-like workpiece is held in position with the aid of suitable grooves.
  • the anode body is suitably movable relative to the plated workpiece, although it is also possible for the anode body to be stationary, whereat an electrically insulating material, for example a wire comprising polypropylene net, moves between the anode and the cathode (the plated workpiece), said wire being passed around, for example, an arm.
  • an electrically insulating material for example a wire comprising polypropylene net
  • the electrically conductive anode plates may, for example, comprise titanium.

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)
EP81850088A 1981-05-19 1981-05-19 Anode zum Plattieren mit einer Stromabnehmerbürste Ceased EP0065059A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81850088A EP0065059A1 (de) 1981-05-19 1981-05-19 Anode zum Plattieren mit einer Stromabnehmerbürste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81850088A EP0065059A1 (de) 1981-05-19 1981-05-19 Anode zum Plattieren mit einer Stromabnehmerbürste

Publications (1)

Publication Number Publication Date
EP0065059A1 true EP0065059A1 (de) 1982-11-24

Family

ID=8188736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81850088A Ceased EP0065059A1 (de) 1981-05-19 1981-05-19 Anode zum Plattieren mit einer Stromabnehmerbürste

Country Status (1)

Country Link
EP (1) EP0065059A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104372391B (zh) * 2014-11-19 2016-11-02 广西大学 孔用电刷镀的镀笔

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951773A (en) * 1973-08-13 1976-04-20 Noranda Mines Limited Fluidized bed electrode system utilizing embedded insulator auxiliary electrode
US4210497A (en) * 1977-02-08 1980-07-01 Wave Energy Development I Vastmanland Aktiebolag Method for providing a surface coating on the wall in a cavity by means of electrolytic plating and the surface coating produced by the method
US4235691A (en) * 1978-06-30 1980-11-25 Wave Energy Development I Vastmanland Aktiebolag Apparatus for electroplating an outer surface of a workpiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951773A (en) * 1973-08-13 1976-04-20 Noranda Mines Limited Fluidized bed electrode system utilizing embedded insulator auxiliary electrode
US4210497A (en) * 1977-02-08 1980-07-01 Wave Energy Development I Vastmanland Aktiebolag Method for providing a surface coating on the wall in a cavity by means of electrolytic plating and the surface coating produced by the method
US4235691A (en) * 1978-06-30 1980-11-25 Wave Energy Development I Vastmanland Aktiebolag Apparatus for electroplating an outer surface of a workpiece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104372391B (zh) * 2014-11-19 2016-11-02 广西大学 孔用电刷镀的镀笔

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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

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19830524

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19850715

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LOQVIST, KAJ-RAGNAR