EP2935661B1 - Vorrichtung zum elektrolytischen beschichten eines drahtes - Google Patents

Vorrichtung zum elektrolytischen beschichten eines drahtes

Info

Publication number
EP2935661B1
EP2935661B1 EP13811125.7A EP13811125A EP2935661B1 EP 2935661 B1 EP2935661 B1 EP 2935661B1 EP 13811125 A EP13811125 A EP 13811125A EP 2935661 B1 EP2935661 B1 EP 2935661B1
Authority
EP
European Patent Office
Prior art keywords
electrolyte
power source
anodes
wire
direct current
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.)
Active
Application number
EP13811125.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2935661A1 (de
Inventor
Dagmar Lorenz
Klaus Menningen
Markus Raab
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.)
Maschinenfabrik Niehoff GmbH and Co KG
Original Assignee
Maschinenfabrik Niehoff GmbH and Co KG
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 Maschinenfabrik Niehoff GmbH and Co KG filed Critical Maschinenfabrik Niehoff GmbH and Co KG
Publication of EP2935661A1 publication Critical patent/EP2935661A1/de
Application granted granted Critical
Publication of EP2935661B1 publication Critical patent/EP2935661B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/007—Current directing 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
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C25D21/14—Controlled addition of electrolyte components
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/30—Electroplating: Baths therefor from solutions of tin
    • 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
    • C25D5/18—Electroplating using modulated, pulsed or reversing current
    • 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
    • C25D7/0607—Wires
    • 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
    • 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

Definitions

  • the wire is connected to the negative terminal of the direct current source and forms the cathode.
  • the positively charged metal ions migrate in the electrolyte to the cathode and absorb electrons there (electrochemical reduction), forming metal atoms that attach to the wire to be coated.
  • soluble anodes With soluble anodes, the anode metal dissolves, releasing electrons into the circuit (electrochemical oxidation) and enters the electrolyte (usually a salt solution) as a metal ion.
  • Insoluble anodes do not dissolve but only serve to contact the electrolyte to form the metal ions within the electrolyte (usually a metal-salt solution). In the case of soluble anodes, these ions dissolve over time; in the case of insoluble anodes, the electrolyte becomes depleted of metal over time.
  • the difference between anodic and cathodic current efficiency described above results in an increase in the metal concentration in the electrolyte in conventional electroplating systems, which must be corrected when a predetermined upper threshold is reached.
  • the electrolyte can be regenerated regularly or continuously, for example.
  • This device is characterized by a second direct current source, which can be operated independently of the first direct current source; and at least one insoluble anode, which is at least partially immersed in the electrolyte in the electrolyte container and is electrically connected to a positive pole of the second direct current source.
  • the metal concentration in the electrolyte can be controlled by the at least one insoluble anode. Since the second direct current source can be operated independently of the first direct current source, with appropriate operation of the two direct current sources, it is possible to compensate for the difference between the anodic and cathodic current yield for the at least one soluble anode via the at least one insoluble anode, thus keeping the metal concentration constant within a predetermined range.
  • the second DC power source is preferably operated continuously or is only switched on as needed.
  • electrolyte in this context refers to a liquid that can dissociate into ions and is therefore suitable for electrolysis, especially in a galvanic plant.
  • the chemical composition of the electrolyte depends in particular on the material of the wire to be coated, the material of the anodes, especially the soluble anodes, and the desired coating material.
  • a methanesulfonic acid electrolyte is preferably used for tinning a (copper) wire.
  • DC power source refers to any type of device capable of providing a DC voltage at its output and thus supplying a connected load with DC current.
  • Batteries, accumulators, fuel cells, and particularly preferably rectifiers are preferably used as DC power sources.
  • the rectifiers are preferably connected downstream of an AC power source such as an AC generator or a power grid.
  • a DC power source is preferably composed of a DC voltage-providing device or of several (preferably essentially identical) DC voltage-providing devices connected in parallel.
  • a "soluble anode” refers to an anode that dissolves over time in the electrolyte through electrochemical oxidation.
  • the metal forming the coating material passes into the electrolyte as a metal ion, releasing electrons into the circuit.
  • a tin anode is preferably used for tinning a (copper) wire.
  • insoluble anode refers to an anode that essentially does not dissolve in the electrolyte over time, but serves only to make electrical contact with the electrolyte.
  • Insoluble anodes can also be referred to as dimensionally stable or inert anodes.
  • Insoluble anodes preferably consist essentially of stainless steel, titanium, or platinum and/or are provided with a protective layer of titanium, platinum, iridium, ruthenium, or the like.
  • the wire to be coated which is immersed in the electrolyte in the electrolyte container, can be connected to a cathode terminal of the device, which is electrically connected to a negative pole of the first direct current source.
  • the cathode terminal is a device suitable for establishing an electrically conductive connection with the wire to be coated. This connection is preferably detachable to allow easy replacement of the wire to be coated. For a continuous electroplating system, this connection is designed to be movable according to the invention.
  • the cathode terminal is preferably also electrically connected to the negative pole of the second direct current source, so that both direct current sources are at the same potential.
  • a control device for controlling the first direct current source and the second direct current source depending on at least one electrolytic parameter of the electrolyte in the electrolyte container.
  • both direct current sources are controlled in order to to regulate the currents in both circuits.
  • An "electrolytic parameter" in this context is understood to mean an operating parameter of the device that influences the electrolysis in the electrolyte and thus the electrolytic coating of the wire to be coated.
  • the electrolytic parameters in this context include, in particular but not exclusively, the metal (ion) content, the acid content, the pH value, and the conductivity of the electrolyte, as well as the current intensity and the throughput rate.
  • at least one of the electrolytic parameters is the metal ion content.
  • the device according to the invention is designed as a continuous device for the continuous electrolytic coating of a wire.
  • the continuous device can be used for coating wire.
  • a method for the continuous electrolytic coating of a wire in a continuous process comprises the steps: immersing a wire to be coated into an electrolyte container containing an electrolyte, into which at least one soluble anode, which is electrically conductively connected to a positive pole of a first direct current source, and at least one insoluble anode, which is electrically conductively connected to a positive pole of a second direct current source, are at least partially immersed; electrically connecting the wire to be coated to a negative pole of the first direct current source and a negative pole of the second direct current source; and operating the second direct current source independently of the first direct current source.
  • the current intensity of the first direct current source and the current intensity of the second direct current source are set differently from one another.
  • a total current strength of the first direct current source and the second direct current source is kept substantially constant.
  • the first direct current source and the second direct current source are controlled as a function of at least one electrolytic parameter of the electrolyte in the electrolyte container, namely at least the metal ion content.
  • the at least one electrolytic parameter of the electrolyte in the electrolyte container is recorded regularly or continuously.
  • the electroplating system has a large, elongated electrolyte tank 10 for holding a suitable electrolyte 12.
  • a suitable electrolyte 12 for wire tinning, for example, a methanesulfonic acid electrolyte 12 is used.
  • a plurality of soluble tin anodes 14 are arranged in the electrolyte container 10. As shown in Fig. 1 As indicated, these are preferably arranged in two rows, each in pairs opposite each other. The tin anodes 14 are each immersed in the electrolyte 12 in the electrolyte container 10.
  • the tin anodes 14 are all electrically connected to a positive terminal of a first direct current source 16.
  • the first direct current source 16 is, for example, a rectifier connected to a power grid or an alternating current generator.
  • the first direct current source 16 is designed, for example, for a total current of approximately 6,500 A.
  • the wire 18 to be coated is immersed in the electrolyte 12 in the electrolyte container 10 in a continuous process.
  • appropriate conveying devices are available, which are Fig. 1 are not shown.
  • the conveying speed of the wire 18 through the electrolyte 12 is adjusted to the desired coating thickness.
  • the wire 18 to be coated is electrically connected to a cathode terminal 20, which is electrically connected to the negative pole of the first direct current source 16. This creates a closed circuit from the positive pole of the first direct current source 16 via the soluble tin anodes 14, the electrolyte 12, the wire 18, and the cathode terminal 20 to the negative pole of the first direct current source 16.
  • the insoluble anodes 22 are all electrically connected to a positive pole of a second direct current source 24.
  • the second direct current source 24 is, for example, a rectifier connected to a power grid or an alternating current generator.
  • the second direct current source 24 is designed, for example, for a total current in the range of approximately 50 to 150 A.
  • the cathode terminal 20 contacting the wire 18 to be coated is also connected to the negative pole of this second DC power source 24.
  • the negative poles of the first and second DC power sources 16, 24 are at the same potential.
  • the first DC power source 16 and the second DC power source 24 can be operated independently of one another.
  • the current strengths of the two DC power sources 16, 24 can be adjusted independently of one another.
  • a control device 26 which controls the first direct current source 16 and the second direct current source 24.
  • This control device 26 is connected to a measuring device 28, which is designed to detect at least one electrolytic parameter of the electrolyte 12 in the electrolyte container 10. This can be done, for example, continuously by directly measuring the parameter in the electrolyte container 10 or by regularly taking samples from the electrolyte container 10 and subsequently analyzing them separately from the electrolyte container.
  • the current calculated for the coating process corresponds to 100%, meaning that the metal ions required for the desired coating thickness pass from the soluble anodes 14 into the electrolyte solution 12.
  • the cathodic current efficiency is only approximately 97%. Therefore, the metal (ion) concentration in the electrolyte 12 would increase over time.
  • the second direct current source 24 can be switched on by the control device 26, thus compensating for the missing 3% of the cathodic current yield. Since the insoluble anodes 22 do not release metal ions into the electrolyte, but only serve to supply current, the metal concentration in the electrolyte can be kept essentially constant or constant within a predetermined range.
  • wire tinning in a methanesulfonic acid electrolyte This is illustrated in more detail using the example of wire tinning in a methanesulfonic acid electrolyte.
  • the wire 18 With a wire diameter of approximately 1.6 mm and a desired tin coating thickness of approximately 5 ⁇ m, the wire 18 is conveyed through the electrolyte 12 at a speed of approximately 10 m/s.
  • the invention also makes it possible to correct an excessively high metal content in the electrolyte 12. If the metal (ion) concentration in the electrolyte 12 is too high, which is detected by the measuring device 28, the current intensity of the first direct current source 16 can be reduced and the current intensity of the second direct current source 24 can be increased accordingly by the control device 26 in the device according to the invention. If the increase in the current intensity of the second direct current source 24 is greater than the reduction in the current intensity of the first direct current source 16, the metal content in the electrolyte 12 can be reduced again over time.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP13811125.7A 2012-12-18 2013-12-09 Vorrichtung zum elektrolytischen beschichten eines drahtes Active EP2935661B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012024758.3A DE102012024758B4 (de) 2012-12-18 2012-12-18 Vorrichtung und Verfahren zum elektrolytischen Beschichten eines Gegenstandes und deren Verwendung
PCT/EP2013/003710 WO2014094998A1 (de) 2012-12-18 2013-12-09 Vorrichtung und verfahren zum elektrolytischen beschichten eines gegenstandes

Publications (2)

Publication Number Publication Date
EP2935661A1 EP2935661A1 (de) 2015-10-28
EP2935661B1 true EP2935661B1 (de) 2025-09-10

Family

ID=49841627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13811125.7A Active EP2935661B1 (de) 2012-12-18 2013-12-09 Vorrichtung zum elektrolytischen beschichten eines drahtes

Country Status (10)

Country Link
US (1) US10047449B2 (https=)
EP (1) EP2935661B1 (https=)
JP (1) JP6169719B2 (https=)
CN (1) CN104685112A (https=)
DE (1) DE102012024758B4 (https=)
ES (1) ES3055815T3 (https=)
MX (1) MX348141B (https=)
PL (1) PL2935661T3 (https=)
RU (1) RU2635058C2 (https=)
WO (1) WO2014094998A1 (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104313657A (zh) * 2014-11-10 2015-01-28 临安振有电子有限公司 Hdi印制线路板通孔的电沉积装置
JP6423320B2 (ja) * 2015-06-25 2018-11-14 田中貴金属工業株式会社 めっき装置及びめっき方法
TWI698554B (zh) * 2015-10-20 2020-07-11 香港商亞洲電鍍器材有限公司 電鍍機器及電鍍方法
WO2018053158A1 (en) * 2016-09-14 2018-03-22 Modumetal, Inc. System for reliable, high throughput, complex electric field generation, and method for producing coatings therefrom
EP4010516A1 (de) * 2019-08-05 2022-06-15 SMS Group GmbH Verfahren und anlage zum elektrolytischen beschichten eines elektrisch leitfähigen bandes und/oder gewebes mittels pulstechnik
US12209323B2 (en) * 2020-12-08 2025-01-28 Honeywell International Inc. Electroplating shield device and methods of fabricating the same
RU2751355C1 (ru) * 2021-02-26 2021-07-13 Акционерное общество "Саратовское предприятие промышленной электроники и энергетики" (АО "Промэлектроника") Способ нанесения гальванического покрытия на прецизионные металлические нити и установка для его реализации

Citations (4)

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US2823180A (en) * 1953-11-25 1958-02-11 Rothschild Edgar Method and means for coating wires
US4169780A (en) * 1977-05-24 1979-10-02 Societe Les Piles Wonder Process and apparatus for making negative electrodes, in particular in cadmium or zinc, for electrochemical generators, and the negative electrodes thus obtained
US4514266A (en) * 1981-09-11 1985-04-30 Republic Steel Corporation Method and apparatus for electroplating
JPS6386886A (ja) * 1986-09-29 1988-04-18 Nippon Steel Corp 電気合金めつき帯鋼の製造方法

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US1465034A (en) 1921-11-03 1923-08-14 Frank L Antisell Process for the electrolytic deposition of copper
FR2392502A1 (fr) 1977-05-24 1978-12-22 Wonder Procede et dispositif pour fabriquer des electrodes negatives, notamment en cadmium ou en zinc, pour generateurs electrochimiques et electrodes negatives ainsi obtenues
DE3012168A1 (de) * 1980-03-27 1981-10-01 Schering Ag Berlin Und Bergkamen, 1000 Berlin Verfahren zur galvanischen abscheidung von kupferniederschlaegen
JPS63317698A (ja) * 1987-06-20 1988-12-26 Toyota Motor Corp 電気めっき液の金属イオン濃度と水素イオン濃度の制御装置
CN87211969U (zh) * 1987-08-22 1988-07-20 北京高熔金属材料厂 钨丝镀金用连续电镀装置
US5228965A (en) * 1990-10-30 1993-07-20 Gould Inc. Method and apparatus for applying surface treatment to metal foil
JPH04191394A (ja) * 1990-11-26 1992-07-09 Furukawa Electric Co Ltd:The 銅被覆鋼線の製造方法
JPH04284691A (ja) * 1991-03-13 1992-10-09 Arumetsukusu:Kk プリント配線板の電気めっき方法
US5100517A (en) 1991-04-08 1992-03-31 The Goodyear Tire & Rubber Company Process for applying a copper layer to steel wire
DE4235227A1 (de) 1992-10-13 1994-04-14 Galvanotechnik Juergen Rossman Verfahren zur Metallkonzentrations-Stabilisierung im Elektrolyten eines sauren Kupferbades bei der Verkupferung von Tiefdruckzylindern in der Druckindustrie
JP2943551B2 (ja) * 1993-02-10 1999-08-30 ヤマハ株式会社 メッキ方法及びその装置
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823180A (en) * 1953-11-25 1958-02-11 Rothschild Edgar Method and means for coating wires
US4169780A (en) * 1977-05-24 1979-10-02 Societe Les Piles Wonder Process and apparatus for making negative electrodes, in particular in cadmium or zinc, for electrochemical generators, and the negative electrodes thus obtained
US4514266A (en) * 1981-09-11 1985-04-30 Republic Steel Corporation Method and apparatus for electroplating
JPS6386886A (ja) * 1986-09-29 1988-04-18 Nippon Steel Corp 電気合金めつき帯鋼の製造方法

Also Published As

Publication number Publication date
DE102012024758A1 (de) 2014-06-18
US10047449B2 (en) 2018-08-14
CN104685112A (zh) 2015-06-03
MX2015004743A (es) 2015-07-23
WO2014094998A1 (de) 2014-06-26
DE102012024758B4 (de) 2024-02-01
US20150284867A1 (en) 2015-10-08
JP2015537123A (ja) 2015-12-24
MX348141B (es) 2017-05-30
BR112015012707A2 (pt) 2017-07-11
JP6169719B2 (ja) 2017-07-26
RU2015117784A (ru) 2017-01-23
EP2935661A1 (de) 2015-10-28
ES3055815T3 (en) 2026-02-16
PL2935661T3 (pl) 2026-03-02
RU2635058C2 (ru) 2017-11-08

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