DE384285C - Process for achieving different levels of galvanic metal deposits at the same time - Google Patents

Process for achieving different levels of galvanic metal deposits at the same time

Info

Publication number
DE384285C
DE384285C DEW61701D DEW0061701D DE384285C DE 384285 C DE384285 C DE 384285C DE W61701 D DEW61701 D DE W61701D DE W0061701 D DEW0061701 D DE W0061701D DE 384285 C DE384285 C DE 384285C
Authority
DE
Germany
Prior art keywords
metal deposits
same time
electrolyte
different levels
galvanic metal
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
Application number
DEW61701D
Other languages
German (de)
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.)
WMF Group GmbH
Original Assignee
WMF Group GmbH
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 WMF Group GmbH filed Critical WMF Group GmbH
Priority to DEW61701D priority Critical patent/DE384285C/en
Application granted granted Critical
Publication of DE384285C publication Critical patent/DE384285C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/16Electroplating with layers of varying thickness

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Description

Verfahren zur gleichzeitigen Erzielung verschieden starker galvanischer Metallniederschläge. Es ist bekannt, einen verschieden starken galvanischen Metallniederschlag gleichzeitig auf demselben Gegenstande dadurch zu erzielen, daß zwischen letzterem und der Anode frei hängende Platten aus isolierenden Stoffen angeordnet werden, die gegenüber den zu verstärkenden Stellen mit größeren oder kleineren Öffnungen versehen sind.Process for the simultaneous achievement of differently strong galvanic Metal deposits. It is known to have galvanic metal deposition of different strengths at the same time on the same object by the fact that between the latter and the anode freely hanging plates made of insulating materials are arranged, those opposite the areas to be reinforced with larger or smaller openings are provided.

Bei diesem Verfahren gehen noch ziemlich viele Stromlinien im Bade um die zwischengehängte Isolierplatte herum und bewirken einen relativ starken Niederschlag auch auf denjenigen Stellen des Gegenstandes, die den Öffnungen nicht gegenüberstehen, so daß der Unterschied zwischen der verstärkten und nichtverstärkten Stelle je nach der Leitfähigkeit des Elektrolyten beispielsweise nur die anderthalb bis zweifache Stärke beträgt. Nun wird zwar für manche Zwecke die nach diesem Verfahren erzielte Verstärkung genü-;en; es gibt aber Fälle, bei denen eine viel größere Verstärkung des Metallniederschlags an bestimmten Stellen notwendig erscheint.With this procedure, there are still quite a few streamlines in the bath around the suspended insulating plate and cause a relatively heavy precipitation also on those parts of the object that are not opposite the openings, so that the difference between the reinforced and unreinforced body depending on the conductivity of the electrolyte, for example, only one and a half to two times Strength is. Now it is true that for some purposes the results achieved by this method Reinforcement is sufficient; but there are cases where a much greater gain of the metal deposit appears necessary in certain places.

Man half sich seither damit, daß man die nicht zu verstärkenden Stellen, nachdem sie bereits einen genügend starken galvanischen Niederschlag erhalten hatten, durch Abdekken mit Lack oder Einlegen der Gegenstände zwischen Hartgummischalen mit entsprechenden Aussparungen vor weiterem Auftrage im Bade schützte, oder indem man die zu verstärkenden Stellen durch partielles Eintauchen in die Bädflüssig eit weiter ggalvani= sierte. Alle diese Methoden erforderten aber ein zweimaliges Einhängen in das Elektroplattierbad, also vermehrte Arbeit, abgesehen von anderen sich dabei ergebenden Mißständen, wie Wiederablösen des Niederschlags an der Berührungsgrenze zwischen Badflüssig keit und Luft, beim Abdecken mit Lack nachträgliches Abwaschen desselben u. dgl.Since then one has helped oneself by eliminating the areas that cannot be reinforced, after they had already received a sufficiently strong galvanic precipitate, by covering with varnish or placing the objects between hard rubber shells with appropriate recesses protected against further application in the bath, or by the areas to be reinforced are eit by partial immersion in the bath liquid further galvanized. However, all of these methods required hanging twice in the electroplating bath, so increased work, apart from others doing it resulting abuses, such as detachment of the precipitate at the contact limit between bath liquid and air, when covering with varnish, subsequent washing off the same and the like.

Gemäß der Erfindung werden die um die zwischengehängten Isolierplatten verlaufenden, unerwünschten Stromlinien dadurch vermieden, daß man die zu galvanisierenden Gegenstände im Elektrolyten in geschlossene Zellen aus elektrisch isolierenden Stoffen hängt, die nur da mit entsprechenden öffnungen für ungehinderten Stromdurchgang versehen sind, wo eine Verstärkung des galvanischen Niederschlages gewünscht wird. Dadurch ist es möglich, in einem Arbeitsgang z. B. eine vier- bis sechsfache Verstärkung j e nach der Anordnung der öffnungen der Leitfähigkeit des Elektrolyten zu erzielen.According to the invention, around the insulating panels that are suspended between them running, undesirable streamlines avoided by the fact that the to be electroplated Objects in the electrolyte in closed cells made of electrically insulating materials that only hangs there with appropriate openings for unhindered passage of electricity are provided where reinforcement of the galvanic deposit is desired. This makes it possible in one operation, for. B. a four to sixfold gain Depending on the arrangement of the openings, the conductivity of the electrolyte can be achieved.

Die Zellen können aus einem Stück oder aus mehreren auseinandernehmbaren Teilen bestehen, sie können auch zum Zwecke des besseren Einhängens der Gegenstände oben offen sein, wenn der obere Rand aus der Elektrolytflüssigkeit hervorragt.The cells can be made of one piece or of several disassemblable Parts exist, they can also be used for the purpose of better hanging the objects be open at the top when the upper edge protrudes from the electrolyte liquid.

Claims (1)

PATENT-ANSPRÜCHE: i. Verfahren zur gleichzeitigen Erzielung verschieden starker galvanischer Metallniederschläge auf demselben Gegenstande, dadurch gekennzeichnet, daß die Gegenstände im Elektrolyten in geschlossene Zellen aus elektrisch isolierenden Stoffen gehängt werden, die nur da mit entsprechenden öffnungen für ungehinderten Stromdurchgang versehen sind, wo eine Verstärkung des galvanischen Niederschlags gewünscht wird. a. @"erfahren nach Anspruch i, dadurch gekennzeichnet, daß die Gegenstände im Elektrolyten in oben offene Zellen aus elektrisch isolierenden Stoffen gehängt «erden, deren oberer Rand aus der Elektrolytflüssigkeit hervorragt.PATENT CLAIMS: i. Method of achieving simultaneous different strong galvanic metal deposits on the same object, characterized in that that the objects in the electrolyte in closed cells made of electrically insulating Fabrics are hung that are just there with corresponding openings are provided for unhindered passage of current, where a reinforcement of the galvanic Precipitation is desired. a. @ "experience according to claim i, characterized in that that the objects in the electrolyte in open-topped cells made of electrically insulating Suspended fabrics whose upper edge protrudes from the electrolyte fluid.
DEW61701D 1922-07-18 1922-07-19 Process for achieving different levels of galvanic metal deposits at the same time Expired DE384285C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW61701D DE384285C (en) 1922-07-18 1922-07-19 Process for achieving different levels of galvanic metal deposits at the same time

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201141X 1922-07-18
DEW61701D DE384285C (en) 1922-07-18 1922-07-19 Process for achieving different levels of galvanic metal deposits at the same time

Publications (1)

Publication Number Publication Date
DE384285C true DE384285C (en) 1923-10-26

Family

ID=25758802

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW61701D Expired DE384285C (en) 1922-07-18 1922-07-19 Process for achieving different levels of galvanic metal deposits at the same time

Country Status (1)

Country Link
DE (1) DE384285C (en)

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