EP0121616A1 - Verfahren und Vorrichtung zur Elektroplattierung - Google Patents

Verfahren und Vorrichtung zur Elektroplattierung Download PDF

Info

Publication number
EP0121616A1
EP0121616A1 EP83301946A EP83301946A EP0121616A1 EP 0121616 A1 EP0121616 A1 EP 0121616A1 EP 83301946 A EP83301946 A EP 83301946A EP 83301946 A EP83301946 A EP 83301946A EP 0121616 A1 EP0121616 A1 EP 0121616A1
Authority
EP
European Patent Office
Prior art keywords
chamber
electrolyte
plating
highly conductive
components
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Withdrawn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
EP83301946A
Other languages
English (en)
French (fr)
Inventor
John Marshall Cockeram
Herbert Wurmb
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.)
Owen SG Ltd
Original Assignee
Owen SG Ltd
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 Owen SG Ltd filed Critical Owen SG Ltd
Priority to EP83301946A priority Critical patent/EP0121616A1/de
Publication of EP0121616A1 publication Critical patent/EP0121616A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • C25D5/02—Electroplating of selected surface areas

Definitions

  • THE PRESENT INVENTION relates to electroplating, particularly, but not exclusively, for the plating of headers, utilising an electrolyte to effect the cathodic connection and, in the case of the plating of headers, to form a connection between those leads which are insulated from one another.
  • a method of selective plating incorporating the improvement comprising the utilisation of a highly conductive electrolyte, compatible with the plating electrolyte but containing no depositable metallic ions, to form the cathode connection to the components to be plated.
  • the invention comprises a method of selectively electroplating components, which comprises mounting the com-- ponents in a worktray, placing the worktray over a chamber containing or intended to contain highly conductive electrolyte, compatible with the plating electrolyte but containing no depositable metallic ions, placing the inverted worktray in a plating machine (in the case of a jet plating machine, so that the jet anodes of the plating machine align with parts of the components exposed below the inverted worktray,) and electroplating the said components, the cathode connection to the said components being effected through highly conductive electrolyte, compatible with the plating electrolyte but containing no depositable metallic ions, in the chamber on the opposite side of the worktray from the jet plating anodes.
  • the chamber comprises a two-part chamber, the lower part of the chamber containing the highly conductive electrolyte during electroplating, the part of the chamber which is uppermost during electroplating being sufficiently large as to contain all the highly conductive electrolyte on - inverting the worktray and chamber from the jet electroplating machine.
  • the chamber be pressurised during electroplating, to keep the highly conductive electrolyte separate from the plating electrolyte and also to assist the retention of the components being plated in place in their mask against the thrust of the plating electrolyte, during electroplating.
  • the pressurisation is effected by introducing air under pressure to an expansible portion of the chamber, separated from the highly conductive electrolyte by a diaphragm.
  • the invention further provides in a machine for electroplating components, the improvement comprising providing the cathode connection to the components to be plated through the intermediary of a highly conductive electrolyte compatible with the plating electrolyte but containing no depositable metallic ions.
  • the invention provides in another aspect a machine for selectively electroplating components, which comprises means for mounting the components in a worktray, a chamber over which the worktray can be placed, the chamber containing or intended to contain highly conductive electrolyte, compatible with the plating electrolyte but containing no depositable metallic ions, and a plating machine in which the inverted worktray can be placed (in the case of a jet plating machine so that the jet anodes of the plating machine align with parts of the components exposed below the inverted worktray), whereby the said components can be electroplated, the cathode connection to the said components being effected through highly conductive electrolyte, compatible with the plating electrolyte but containing no depositable metallic ions, in the chamber on the opposite side of the worktray from the plating anodes.
  • the members being plated can more readily be maintained in place against their mask against the thrust of the plating electrolyte.
  • the seal will become thighter as pressure is increased.
  • the highly conductive electrolyte should have a similar or compatible formulation to the plating electrolyte but, of course, without any depositable metallic ions therein, such as gold, silver or the like.
  • the main part of the plating machine naturally comprises a standard plating machine, such as "Carousel” made by S. G. Owen Limited. Between the worktray, made of plastics material, and the plating machine pressure plate, is provided a chamber construction sealed to the back of the worktray, for containing the highly conductive electrolyte.
  • a standard plating machine such as "Carousel” made by S. G. Owen Limited.
  • the chamber I between the worktray 2 and the pressure plate 3 is preferably made of a material such as stainless steel and is sealed to the back of the worktray 2 about the periphery thereof, preferably by means of quick releasable clamps.
  • the chamber I is typically divided into two compartments A and B, separated by a partition provided with valves which can be opened and closed to allow the passage of fluid from compartment A to compartment B and vice versa.
  • a diaphragm 4 mounted to the wall of the chamber I by a clamp ring 5, means being provided whereby pressurised air can be introduced into the space between the wall of the chamber I and the diaphragm 4.
  • headers by way of example, are placed upright in a worktray by means of a standard Wurmbs vibrator table, headers of the TO 18 type can be loaded at a rate of 225 per minute and of TO 5 type at 85 per minute. These are either then loaded directly or into Lindberg, Eset or similar tapes which are then placed in the worktray.
  • Mask rubbers having a lip seal which seat between the sides and under the top flange of the header cap are provided, so that a small downward pressure on the header increases the effectiveness of the seal.
  • the chamber I When the worktray is fully loaded, the chamber I is clamped over the worktray and a highly conductive electrolyte compatible with the plating electrolyte but containing no depositable metallic ions is introduced into the volume of the chamber under fairly low pressure. This pressure ensures good sealing between the header and the mask.
  • Cathode contact is made with the chamber 1, which is transferred via the electrolyte to the pins and cap of each header. Contamination of the plating electrolyte is avoided by compatibility of the highly conductive electrolyte with the plating electrolyte, should any slight leak occur.
  • the contact/mask is used to plate selectively the headers in the usual way.
  • the chamber can, as described by way of example with reference to the drawing, be divided into two compartments by means of a divider. This is positioned above and a little higher than the top ends of the leads of any headers to be plated.
  • the volume of the upper compartment is larger than the volume of the lower compartment and in the divider are several fairly large holes which can be opened or closed by an external linked operating device. With the holes closed, electrolyte will not be able to pass from the upper to the lower compartment.
  • a flexible membrane diaphragm
  • neoprene or similar material In the top part of the chamber is provided in the top part of the chamber.
  • the chamber is inverted and the valves opened.
  • Electrolyte is then introduced into the chamber, in an amount sufficient to cover the header lead ends in chamber B when the box is in its normal operating position. After the electrolyte has flowed into the chamber A, the valves are closed.
  • the chamber is next turned over and placed on a loaded worktray and secured thereto by quick-release clamps. This is then placed into the plating head of a plating machine and the plating machine pressure plate is lowered and an air nozzle aligned with the air hole in the chamber. The valves are then opened to allow electrolyte to flow into chamber B and air introduced into the volume above the diaphragm. Thereafter, plating is performed in the usual manner.
  • the pressurised air is turned off and the chamber and worktray removed from the plating machine. This assembly is then inverted to allow electrolyte to return to chamber A and, thereafter, the valves are closed. The chamber is then removed from the worktray and any headers that have fallen into chamber B can be removed. The plating sequence is then repeated.
  • these will typically be aqueous solutions of phosphates and/or citrates as used as conductive salts in proprietary plating solutions for pure/hard gold plating.
  • the relevant conductivities are as follows:

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)
EP83301946A 1983-04-06 1983-04-06 Verfahren und Vorrichtung zur Elektroplattierung Withdrawn EP0121616A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83301946A EP0121616A1 (de) 1983-04-06 1983-04-06 Verfahren und Vorrichtung zur Elektroplattierung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83301946A EP0121616A1 (de) 1983-04-06 1983-04-06 Verfahren und Vorrichtung zur Elektroplattierung

Publications (1)

Publication Number Publication Date
EP0121616A1 true EP0121616A1 (de) 1984-10-17

Family

ID=8191111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301946A Withdrawn EP0121616A1 (de) 1983-04-06 1983-04-06 Verfahren und Vorrichtung zur Elektroplattierung

Country Status (1)

Country Link
EP (1) EP0121616A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR616544A (fr) * 1925-10-15 1927-02-03 Procédé et dispositif pour recouvrir les corps cylindriques ou de forme quelconque, d'un dépôt galvanique de hauteur déterminée
US4007097A (en) * 1973-10-04 1977-02-08 Galentan A.G. Process for selectively applying a metal coating to the metallic parts of elements which pass through an insulator
US4042480A (en) * 1973-10-04 1977-08-16 Noz Francis X Apparatus for selectively applying a metal coating to the metallic parts of elements which pass through an insulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR616544A (fr) * 1925-10-15 1927-02-03 Procédé et dispositif pour recouvrir les corps cylindriques ou de forme quelconque, d'un dépôt galvanique de hauteur déterminée
US4007097A (en) * 1973-10-04 1977-02-08 Galentan A.G. Process for selectively applying a metal coating to the metallic parts of elements which pass through an insulator
US4042480A (en) * 1973-10-04 1977-08-16 Noz Francis X Apparatus for selectively applying a metal coating to the metallic parts of elements which pass through an insulator

Similar Documents

Publication Publication Date Title
EP0405558A2 (de) Metall-Luft-Batterie mit leicht entfernbaren Anoden
JP3869416B2 (ja) 圧力電解槽、およびそのような圧力電解槽を作動するための方法
US4288305A (en) Process for electrowinning nickel or cobalt
US6332963B1 (en) Cup-type plating apparatus and method for plating wafer using the same
US20220307153A1 (en) Anode holder, and plating apparatus
US4454009A (en) Method of, and a machine for, electroplating
EP0121616A1 (de) Verfahren und Vorrichtung zur Elektroplattierung
CA1062653A (en) Electrowinning of sulfur-containing nickel
GB2109005A (en) Electroplating
KR840006796A (ko) 전기분해를 이용한 포트형의 정수기
CA1093012A (en) Electroplating apparatus
JP2722137B2 (ja) 電解コンデンサ素子の電解液真空含浸方法及び装置
DE69005804D1 (de) Elektrolytische Zelle für Gas-Herstellung, die ein Stapel von senkrechten Rahmen enthält.
GB1216296A (en) Improvements in and relating to the electroplating of the cut edges of sheet metal panels
JPS59215493A (ja) 選択めつき方法と装置
AU608380B2 (en) Metal/air battery with pulsed gas bubbling
JP3286064B2 (ja) ウエーハのめっき用ラック及びそれを用いためっき方法
JPS5770289A (en) Plating apparatus
JPH0334529A (ja) 電解コンデンサ素子の電解液真空含浸方法及び装置
JPS56158882A (en) Device for separating oxygen from air electrochemically
WO2000037130A1 (en) Controlled and regulated conveying of fluid mediums by electrochemical gas generation
JPH0427594Y2 (de)
KR20020031908A (ko) 중공형 부품용 도금장치 및 도금방법
JPS5725669A (en) Storage battery
JPS5442373A (en) Clamping type gasket for electrolytic cell

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): AT BE CH DE FR GB IT LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850618

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WURMB, HERBERT

Inventor name: COCKERAM, JOHN MARSHALL