EP0432559A1 - Galvanotechnisches Fügeverfahren und Vorrichtung - Google Patents

Galvanotechnisches Fügeverfahren und Vorrichtung Download PDF

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Publication number
EP0432559A1
EP0432559A1 EP90122577A EP90122577A EP0432559A1 EP 0432559 A1 EP0432559 A1 EP 0432559A1 EP 90122577 A EP90122577 A EP 90122577A EP 90122577 A EP90122577 A EP 90122577A EP 0432559 A1 EP0432559 A1 EP 0432559A1
Authority
EP
European Patent Office
Prior art keywords
roller
seam
electroplating
coating device
connection
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.)
Withdrawn
Application number
EP90122577A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Dipl.-Ing. Semrau
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP0432559A1 publication Critical patent/EP0432559A1/de
Withdrawn legal-status Critical Current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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/22—Electroplating combined with mechanical treatment during the deposition
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/04—Electroplating with moving electrodes
    • C25D5/06—Brush or pad plating

Definitions

  • the invention relates to an electroplating process for producing a metallic connection between two metal surfaces.
  • Galvanic production of metallic connections between two metallic parts is known. It is mostly used when the parts to be connected should not be exposed to heat. This is the case, for example, in aircraft construction, where riveted joints or adhesive technology are chosen as the joining process in order to avoid high thermal loads.
  • Galvanotechnical joining processes are based on the principle of the galvanic deposition of metallic layers in the galvanic bath. Such a method is described in "85 Materials Engineering 3-77", pages 42 and 43. This process has disadvantages: firstly, the components to be connected must be completely immersed in a galvanic bath and secondly, the connection is only possible between two surfaces that are at a flat angle to each other. If the parts to be connected were at an acute angle to one another, then because of the unequal paths between the cathode and the anode, the deposited material would deposit unevenly on the cathode, ie on the surfaces to be connected.
  • the invention has for its object to develop a generic method so that the production of a metallic connection between two at any angle to each other metal surfaces is possible, and that the components do not have to be immersed in a galvanic bath. Furthermore, a device for performing the method is to be specified.
  • the electrolyte liquid is applied to the surfaces to be connected in the connection area by a rotating, galvanic coating device with an integrated anode.
  • a rotating, galvanic coating device with an integrated anode.
  • the use of the method according to the invention makes it possible to produce a continuous seam.
  • the surfaces to be connected are not connected to each other at certain points, but continuously, even if the seam has a relatively complicated course. It is both the laying of a V-seam with or without root as well as the blunt joining of components is possible.
  • the seam thickness can be determined by the appropriate coordination of time and current strength. If the contact pressure of the roll is selected accordingly depending on the time and current strength, the method is able to follow the different seam geometry as the layer builds up; this makes it economically feasible since post-processing is not required.
  • a galvanic thick layer system such as thick nickel plating or the like, is preferably used as the electrolyte in order not to make the metal application too lengthy and thus to further improve the economy.
  • the use of electrolytes from which alloys are deposited is also conceivable in order to improve the adaptation of the filler material to the construction material.
  • the contact pressure of the coating device is selected such that, in the case of the production of the coating device from abrasive materials, the contact pressure at the beginning of the coating is greater than in the later course of the connection process in favor of a faster layer build-up. This procedure is particularly important for connections between titanium and stainless steels.
  • the coating device As a roll adapted to the seam geometry and the production of the same from an elastic material, an optimal connection between the components is achieved.
  • the elastic material of the roll adapts to the seam root at the beginning of the joining process, later in the process of the seam geometry. Due to the deformation of the roll, a seam limit can also be specified, which means that further processing of the resulting connection is not necessary.
  • abrasive materials as the roll material in connection with the rotational movement of the roll, it is achieved that the surfaces to be connected are mechanically activated.
  • the coating device has in its axle bearing a sensor, preferably a pressure sensor.
  • the contact pressure of the roll can be regulated by comparing the actual contact pressure with the specified target value.
  • the feature of providing the anode with an insulation coating at the points from which no current flow is to take place advantageously enables a geometrically controlled deposition to be carried out while avoiding undesirable flank build-up.
  • the materials A and B to be joined touch at the beginning of the method at a point C.
  • a roller 1 is brought into the connection area, which rotates about its axis 2, which is also its axis of symmetry.
  • the axis 2 can be moved in the direction of the arrow 3.
  • the roller 1 has moved up in the joining area near the point of contact C of the two materials A and B to be joined.
  • the roller 1 is made of an elastic material and it has an anode 4 integrated in it. In the areas from which no current should flow, the anode 4 is coated with an insulator 6. If current is supplied to the anode 4, the deposition process begins.
  • the deposited material initially collects in the immediate vicinity of point C (Fig. 1).
  • the roller 1 is moved out of the connection area (FIG. 2).
  • the contact pressure is also lower than at the start of the connection process.
  • the elastic roll material of the roll 1 follows the seam geometry.
  • the radius R of the roller 1 increases in the course of the process. If the width of the building seam 5 is wider than the roll width, the entire width can be built up evenly by a straight or oscillating movement (arrow 7) of the roll 1 transverse to the seam 5.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP90122577A 1989-12-13 1990-11-27 Galvanotechnisches Fügeverfahren und Vorrichtung Withdrawn EP0432559A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3941128 1989-12-13
DE3941128A DE3941128C1 (enrdf_load_stackoverflow) 1989-12-13 1989-12-13

Publications (1)

Publication Number Publication Date
EP0432559A1 true EP0432559A1 (de) 1991-06-19

Family

ID=6395366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122577A Withdrawn EP0432559A1 (de) 1989-12-13 1990-11-27 Galvanotechnisches Fügeverfahren und Vorrichtung

Country Status (4)

Country Link
US (1) US5248404A (enrdf_load_stackoverflow)
EP (1) EP0432559A1 (enrdf_load_stackoverflow)
JP (1) JP2549763B2 (enrdf_load_stackoverflow)
DE (1) DE3941128C1 (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603593A (en) * 1952-07-15 Electeodepositiqn of metaiis
US4655881A (en) * 1985-04-26 1987-04-07 Electroplating Engineers Of Japan, Limited Brush plating method for connector terminals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569368A (en) * 1946-01-08 1951-09-25 Champion Paper & Fibre Co Joining metal parts
US3671406A (en) * 1970-06-22 1972-06-20 Budd Co Method of joining dissimilar metals by plating
US3706650A (en) * 1971-03-26 1972-12-19 Norton Co Contour activating device
US4140598A (en) * 1976-06-03 1979-02-20 Hitachi Shipbuilding & Engineering Co., Ltd. Mirror finishing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603593A (en) * 1952-07-15 Electeodepositiqn of metaiis
US4655881A (en) * 1985-04-26 1987-04-07 Electroplating Engineers Of Japan, Limited Brush plating method for connector terminals

Also Published As

Publication number Publication date
JP2549763B2 (ja) 1996-10-30
DE3941128C1 (enrdf_load_stackoverflow) 1990-12-06
US5248404A (en) 1993-09-28
JPH03221291A (ja) 1991-09-30

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