CH250911A - Process for making electroformed impressions. - Google Patents

Process for making electroformed impressions.

Info

Publication number
CH250911A
CH250911A CH250911DA CH250911A CH 250911 A CH250911 A CH 250911A CH 250911D A CH250911D A CH 250911DA CH 250911 A CH250911 A CH 250911A
Authority
CH
Switzerland
Prior art keywords
conductive
impressions
layer
mouthpiece
silver
Prior art date
Application number
Other languages
German (de)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH250911A publication Critical patent/CH250911A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/52Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31Coating with metals
    • C23C18/42Coating with noble metals
    • C23C18/44Coating with noble metals using reducing agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung galvanoplastischer Abdrücke. Die Erfindung bezieht sich auf die Her- stellung galvanoplastischer Abdrücke ton Gegenstânden mit nichtleitender Oberflâche, insbesondtre auf die Herotel@lung Bines Ab- druckes Bines Sprechmas.chinenplattenorigi- nals Oder Biner Xopie ,desselben. Process for making electroformed impressions. The invention relates to the production of galvanoplastic impressions of objects with a non-conductive surface, in particular the Herotel@lung Bines impressions of Bines speaking machine plates or Biner Xopie of the same.

Es ist bekannt, nichtleitende Gegensttnde, von denen man galvanoplastisehe Abdrüicke herzustellen wüns,cht, var idem Cialvanisier- vorgang mit Biner @leitenden Schieht zu ver- sehen, inéem ein sehr fein verteiltes- Pulver aufgebracht wird. Bei .der Herstellung von Matrizen zur Herstellung von Sprechmaschi- nenplatten hat man voTges:chlagen, die ur- sprüngliche sogenannte Wachsplatte Oder Bine gopie derselben ans, niehtleiten4em Material, auf welche d'er Schall aufgezekhnet ist, dur-ch Aufdampfen von Silber o@der Go@ld, z. B. durch Elektro@denzerstâubung, mit Biner lei- teniden 'S@ehi-eht zu versehen. Ferner ist es bekannt, Gegenstânde vor Herotellung Bines galvanoplastiochen Abclruckes dadurch mit Biner leitenden S@chicht zu versehen, dal sie in ein Gemisch Biner Silberlbsung end Biner re;duzierenaden Lôsung Oder sonstiger Lôsun- gen eingetaucht werden, die enter Absetzung Biner leitenden & hicht miteinander eine Re- aktion eingehen. It is known to provide non-conductive objects, of which one wishes to produce electroforming imprints, with a conductive layer during the electroplating process, in which a very finely divided powder is applied. In the production of matrices for the manufacture of speech machine plates, it was suggested that the original so-called wax plate or binoculars of the same be bonded to the non-conductive material on which the sound is recorded, by vaporizing silver or the Go@ld, e.g. B. by means of electrode sputtering, with Biner conductive 'S@ehi-eht. It is also known to provide objects with a conductive layer prior to making a galvanoplastic impression by immersing them in a mixture of a silver solution and a reducing solution or other solutions that cause the conductive layer to separate from each other get a reaction.

Die Erfindung 'bezweckt, sauf einfaohem end .sahnellem Wege Bine sokhle deitende Sehi.cht aufzutragen. Naeh der Erfindung wird Bine leitende Sclhioht dadurch erhialten, -daB Losungen, die enter Abse tzung eineT Schkht miteinandër reagieTen, dem gemein= samen Mundstück Biner Spritze getrenmt zu- ; geführt werden end aus diesem mittels Bines Gases .gemeinsam zerstâubt werden, so daB oie sich unmittelbar nachdem oie das Mund- stück verlassen haben end bevor sie .die zu behandëlnde Oberflâache erreichen, innig ver-, mis-chen. The purpose of the invention is to apply a soaking layer in a simple, creamy way. According to the invention, a conductive layer is obtained by the fact that solutions which react with one another after the deposition of a layer are separately connected to the common mouthpiece of the syringe; are conducted and atomized together from this by means of bines gases, so that they are intimately mixed immediately after they have left the mouthpiece and before they reach the surface to be treated.

Es hat sich gezeigt, dal Bine auf diese Art end Weise erhaltene leitende Schioht Bine sehr gleiçhmâBige Stârke end ein sehT gleichmâfliges Aussehen hat end sich beson- ders zur Herstellung von môglichst getreuen gailvanoplastisohen Abdrücken eignet. Bei der Herstellung vo.n Matrizen für Sprechmaschi- nenplatten werden vorzügliche Ergobnisse er- zielt, wenn die urspTünglichen Wachsplatten Oder gopien derselben mit Biner heitenden Sehicht nach der Erfinduug ausgerüs@tet wer- den. Die mittels solcher Matrizen erhaltenen Sprechmmchinenplatter lhesitzen ein beson- ders geringes Eigengerâusch. Ein anderer Vorzug bes@teht darin, -daB die Anordnung Biner leitenden Schi@cht nach der Erfinduug auf sohT -einfache Weise end mit. Biner sehr einfaachen RTI ID="0001.0268"WI="17" HE="4" LX="1232" LY="1934"> Apparatur stattfindet end bei Ver- wendung von schnell miteinand-eT reagieren- den Verbindungen, was sich bei Anwendung des erwâhuten Aufs@p#ritzverfahrens, ermp- fiehlt, sur sehT wenig Zeit beansprucht. It has been shown that the conductive layer obtained in this way has a very uniform thickness and a very uniform appearance and is particularly suitable for the production of gailvanoplasty impressions that are as accurate as possible. Excellent results are obtained in the manufacture of matrices for speech machine plates when the original wax plates or gopias of the same are finished with a binary layer according to the invention. The voice machine platters obtained by means of such matrices have a particularly low inherent noise. Another advantage consists in the fact that the arrangement of a conductive layer according to the invention is so simple. A very simple RTI ID="0001.0268"WI="17" HE="4" LX="1232" LY="1934"> apparatus takes place when using fast-reacting connections, which is Use of the above-mentioned application method, recommended, but takes very little time.

Wenn Bine Wachsplatte, naohdem diese, wie bei @chemisch-er VeTSilberung üblieh ist, mit Biner L & sung Bines Zinnsalzes benetzt worden ist, gemâB der Erfindung durch Auf- spritzen gl@eicher Mengen Biner Lôsung, die je Liter 7 g Silhernitrat und 7 cm3 24 % igen Ammoniak enthââ, uni! Biner Losung, die je Liter 3,5 cms Hydrazinhydrat enthâlt, be- handelt wird, Go ents.teht in einigen Sekun- dan Bine sehT gleichmâBige Silbers-chicht mit Biner Starke von einigen Zohntel-Mikron. Dae Aufspritzen erfolgt dabei z. B. mittels, Biner Spritzvorrichtung, lbei der dal gemeinsame Mundstüek aus, drei konzentrisehen Rohr- stülcken estetht, ,die innern zw-ei zur Zufüh- rung der Silberliisung und der Lôsung .des Rëduktionsmittels, dal AuBenslück zum DuTchblas,en aines. Luftstromes, -der die bai- dan h lüssigkeiten mit Injektorwirkung an- saugt und verspritzt, Go daB sie si-ch', unmsttel- bar nachdem oie dal Mundstück verlassen habeas, infolge der auftretenden Luftwirbe- lungen vollkommen glei#chmâBig vermischen. If a wax plate has been wetted with a solution of a tin salt, as is customary with chemical silvering, according to the invention by spraying on equal amounts of the solution containing 7 g of silver nitrate and 7 g per liter cm3 containing 24% ammonia, uni! In a solution, which contains 3.5 cms of hydrazine hydrate per liter, Go develops in a few seconds. There is a uniform silver layer with a thickness of a few tenths of a micron. Dae spraying takes place z. B. by means of a spraying device, in which the common mouthpiece consists of three concentric tube pieces, the inner two of which are used to supply the silver solution and the solution of the reducing agent, the outer gap for blowing through. Air flow, which sucks in and sprays the baidan h liquids with injector effect, so that immediately after they have left the mouthpiece, they mix completely evenly as a result of the air turbulence that occurs.

Claims (2)

PATENTANSPRÜCHE: I. Verfahren zur Herstellung galvano- plastischer Abdrücke von Gegenstâ,nden mit nichtleitender Oberflâche, insbesondere aines Spreehmaschinenplattenoriginalis oder eineT gopie deseelben, bai .daim. .die nichtleitende Oberflâ,che mittels Ldsungen, die unter Ab setzung Biner Sehicht miteinander reagieren, mit Biner leitend@en Sthicht versehen wird, dadurch gekennzeichnet, daB diese Lôsungen dent gemeinsamen Mundstück Biner Spritze getrennt zugeführt werden und aus diesem mittèls Bines Gales gemeinsam zerstânbt wer- den, Go daf lie si-eh unmittelbar nachdem lie dal, Mund'stück verlassen habeas und bevor lie die zu hehandelnde Oberflâche errekhen, innig vermisqchen. II. Nach dam Verfahren gemaB Patent- anspruch I erhaltener galvanoplastischer Ab- drwck. UNTERANSPRÜCEE: 1. Verfahren n"h Patentanspruch I, da- durch gekennzeichnet, daB Bine leitende Sil- bersehicht unter Verwendûng aines schnell- wirkenden Reduktionsmittéls angebracht wird. PATENT CLAIMS: I. Process for the production of galvano-plastic impressions of objects with a non-conductive surface, in particular a spreehmaschine plate original or a t gopie of the same, bai .daim. .the non-conductive surface is provided with a conductive layer by means of solutions which react with one another with the deposition of a layer, characterized in that these solutions are supplied separately to the common mouthpiece of the syringe and are atomized together from this by means of Bines Gales - God daf let them mix intimately immediately after they had left the mouthpiece and before they reached the surface to be treated. II. Electroforming impression obtained by the method according to patent claim I. SUBCLAIMS: 1. Method according to claim I, characterized in that a conductive silver layer is applied using a fast-acting reducing agent. 2. Verfahren naoh P@atentanspruch I umd Unterans@pruch 1, dadureh gekennzeichnet, daB die ;Silbers,chieht unter Verwendung Biner Hydrazinverbindung angebracht wird. 2. Method according to patent claim I and subclaim 1, characterized in that the silver is attached using a hydrazine compound.
CH250911D 1944-01-22 1945-12-18 Process for making electroformed impressions. CH250911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL250911X 1944-01-22

Publications (1)

Publication Number Publication Date
CH250911A true CH250911A (en) 1947-09-30

Family

ID=19781104

Family Applications (1)

Application Number Title Priority Date Filing Date
CH250911D CH250911A (en) 1944-01-22 1945-12-18 Process for making electroformed impressions.

Country Status (1)

Country Link
CH (1) CH250911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505724A1 (en) * 1981-05-14 1982-11-19 Festo Maschf Stoll G METHOD FOR MANUFACTURING GROOVE DISCS FOR ADJUSTABLE STRANGERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505724A1 (en) * 1981-05-14 1982-11-19 Festo Maschf Stoll G METHOD FOR MANUFACTURING GROOVE DISCS FOR ADJUSTABLE STRANGERS

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