EP0374669B1 - Vorrichtung zur Herstellung eines Kupferuhrengehäuses - Google Patents

Vorrichtung zur Herstellung eines Kupferuhrengehäuses Download PDF

Info

Publication number
EP0374669B1
EP0374669B1 EP89122807A EP89122807A EP0374669B1 EP 0374669 B1 EP0374669 B1 EP 0374669B1 EP 89122807 A EP89122807 A EP 89122807A EP 89122807 A EP89122807 A EP 89122807A EP 0374669 B1 EP0374669 B1 EP 0374669B1
Authority
EP
European Patent Office
Prior art keywords
fact
watch case
copper
cold forming
remainder
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 - Lifetime
Application number
EP89122807A
Other languages
English (en)
French (fr)
Other versions
EP0374669A1 (de
Inventor
Eric Loth
Pierre-Alain Walder
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
Eta SA Fabriques dEbauches
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 Eta SA Fabriques dEbauches filed Critical Eta SA Fabriques dEbauches
Publication of EP0374669A1 publication Critical patent/EP0374669A1/de
Application granted granted Critical
Publication of EP0374669B1 publication Critical patent/EP0374669B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working

Definitions

  • the present invention relates to a method of manufacturing a watch case made of a material comprising by weight at least 95% copper.
  • a watch case carrying such a large percentage of copper has already been proposed in document CH-A-543 764.
  • the process for manufacturing components of a watch case is characterized by the fact that a cupro-beryllium alloy suitable for structural hardening by heat treatment is used, machines said elements, then deposits a layer of stainless metallic material on the outside.
  • the cupro-beryllium alloy comprises at least 1.8% and at most 2.05% of beryllium and that the heat treatment allowing a structural hardening is an income taking place at 320 ° for at least two hours. .
  • the proposed method also makes it possible to obtain by known and proven means, such as stamping, turning, threading, drilling, milling as well as machining, using diamond tools and by a simple heat treatment, a resistant watch case of which all the constituent elements can receive a hard surface treatment, allowing the watch to keep intact, for a practically unlimited time, even if it is worn under very severe conditions, an aspect aesthetic and practically unalterable.
  • Beryllium, alloyed with copper or bronze finds its application in electricity where it has been widely used as electrical spring contacts. However, it has a serious disadvantage which is that of being toxic. Beryllium and its salts should be handled with the utmost care. They should not be touched to check the softness effect they present. It is therefore necessary to observe a certain work discipline, when you know that a concentration in the air exceeding two milligrams per cubic meter is dangerous. These reasons mean that beryllium and its alloys are currently difficult to supply, as is also difficult the problem posed by the reprocessing of waste.
  • Document SU 154 669 describes an electrically conductive alloy based on at least 95% copper, the rest comprising, among other things, cadmium. We know that cadmium is toxic and must be avoided at all costs.
  • the method of manufacturing the watch case according to the invention implements the steps which appear in claim 1.
  • the holder of the present invention used a material used, to his knowledge, in the electrical industry only, as conductors or elastic contacts.
  • a material used to his knowledge, in the electrical industry only, as conductors or elastic contacts.
  • at least one of the constituent parts of the watch case is made of a material comprising at least 95% by weight of copper, the rest being composed of elements capable of increasing the mechanical resistance of the copper excluding the beryllium and cadmium.
  • this material is covered with a layer used to protect and decorate the box.
  • the following composition has excellent results and can constitute a preferred composition: Copper: 98.2%, nickel: 1%, lead: 0.55% and phosphorus: 0.22%.
  • Copper 98.2%
  • nickel 1%
  • lead 0.55%
  • phosphorus 0.22%.
  • the remaining elements are not limited to nickel, lead and phosphorus but may include, for example, manganese or tin.
  • the indicated material can be used to make the only middle part of the box, this middle part can include an integrated or attached bezel.
  • the middle may also carry horns used to attach the bracelet to the box. Shoulder and horns can then be made in one piece with the indicated material. It goes without saying that the bottom of the box can also be made of the same material.
  • the procedure according to the invention is as follows: We start by providing the material described above, this material comprising at least 95% copper, the rest being composed of elements capable of increasing the resistance of the copper excluding beryllium and cadmium. This material can be presented in a strip to facilitate mass production.
  • the preferred composition indicated above can be chosen for the excellent results which it exhibits.
  • the material is then cold deformed in a single operation.
  • This deformation is carried out by means of a tool capable of both cutting and then stamping the material chosen to give the box its final shape which can be that of its middle with its horns.
  • Cold deformation in a single operation is very advantageous because of the saving in tools and time that it presents.
  • the material or at least the surface areas of this material, will be work hardened during the stamping or stamping operation of the material, which will contribute to hardening it and therefore making it mechanically more resistant.
  • the presence of elements such as nickel for example also makes it possible to thermally harden the material and this between the cold deformation operation and the covering operation.
  • the product obtained is introduced into an oven heated to about 400 °.
  • the part thus obtained has an unattractive reddish appearance and not very resistant to corrosion. We will therefore coat it with a layer used to decorate and protect it.
  • This coating can be done in various ways, for example by galvanic means or by physical vapor deposition (PVD). Chromium, nickel or even gold can be deposited by galvanic means, this deposit being facilitated by the fact that the substrate is made of copper.
  • PVD physical vapor deposition
  • electrochemical or electrolytic polishing can be carried out.
  • This type of polishing impossible with brass, advantageously replaces the mechanical polishing commonly used but expensive in time.
  • the PVD deposition on copper alloys calls for an important comment here. It will be noted first of all that the copper alloy most used to make a watch case is brass. Brass contains a large percentage of zinc which makes it unsuitable for receiving a protective layer via PVD. Indeed, the PVD deposition being done under vacuum (between 10 ⁇ 2 and 10 ⁇ 4 mbar) and at a relatively high temperature (between 200 and 400 ° C), the zinc becomes volatile and evaporates during the treatment and that of fact that its vapor pressure is not negligible under the above conditions. This evaporation leads to an irregular deposit and little resistant of the layer you want to apply and finally an unacceptable appearance for the finished part.
  • the deposition by PVD process has yet another advantage which is that of economizing on the thermal hardening operation, this hardening taking place at the same time as the deposition since the deposition temperature (between 200 and 400 ° C.) found to be substantially the same as the curing temperature.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Laminated Bodies (AREA)
  • Physical Vapour Deposition (AREA)
  • Adornments (AREA)

Claims (8)

1. Verfahren zum Herstellen eines Kupferuhrengehäuses, dadurch gekennzeichnet, daß es die Abfolge der nachstehenden Schritte umfaßt:
- man stellt ein Material bereit, das mindestens 95 Gew.-% Kupfer umfaßt, während der Rest aus Elementen besteht, die geeignet sind, die mechanische Widerstandsfähigkeit des Kupfers zu erhöhen, mit Ausnahme von Berillium und Cadmium,
- man nimmt eine Kaltverformung des Materials in einem einzigen Schritt vor zum Formen mindestens eines Bestandteils des Gehäuses, welcher Arbeitsgang gleichzeitig eine Kaltumformung des Materials mit der Tendenz, seine Festigkeit zu vergrößern, bewirkt,
- man beschichtet den Bestandteil mit einer Schutz- und Dekorschicht.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die verbleibenden Elemente Nickel, Blei und Phosphor sind.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Material 98,2 Gew.-% Kupfer enthält, während der Rest aus 1% Nickel, 0,55 % Blei und 0,22% Phosphor besteht.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei der Kaltumformung der Gehäusering des Gehäuses geformt wird.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß bei der Kaltumformung gleichzeitig die einstückig mit dem Gehäusering ausgebildeten Hörner geformt werden.
6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß nach der Kaltumformung und vor der Beschichtung der Bestandteil zwecks thermischer Verfestigung erhitzt wird.
7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schutz- und Dekorschicht galvanisch aufgebracht wird.
8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schutz- und Dekorschicht durch physikalischen Gasphasenniederschlag (PVD) aufgebracht wird, wobei das bereitgestellte Material Restelemente umfaßt, deren Gasdruck im wesentlichen null ist, wenn das genannte Material einem Druck zwischen 10⁻² und 10⁻⁴ mbar und einer Temperatur zwischen 200 und 400°C ausgesetzt wird.
EP89122807A 1988-12-21 1989-12-11 Vorrichtung zur Herstellung eines Kupferuhrengehäuses Expired - Lifetime EP0374669B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4731/88 1988-12-21
CH4731/88A CH674293B5 (de) 1988-12-21 1988-12-21

Publications (2)

Publication Number Publication Date
EP0374669A1 EP0374669A1 (de) 1990-06-27
EP0374669B1 true EP0374669B1 (de) 1992-05-06

Family

ID=4281529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122807A Expired - Lifetime EP0374669B1 (de) 1988-12-21 1989-12-11 Vorrichtung zur Herstellung eines Kupferuhrengehäuses

Country Status (8)

Country Link
US (1) US5021101A (de)
EP (1) EP0374669B1 (de)
JP (1) JPH02221359A (de)
CN (1) CN1043804A (de)
CA (1) CA2005218A1 (de)
CH (1) CH674293B5 (de)
DE (1) DE68901453D1 (de)
GR (1) GR3006335T3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716360B1 (de) 1995-08-30 2001-09-26 Isa Swiss Sa Uhrengehäuse mit ausgehöhltem Gehäuseteil und Gehäuseanpassungsmittel sowie eine mit einem solchen Gehäuse ausgerüstete Uhr
DE29903203U1 (de) * 1999-02-23 1999-05-20 Damasko Konrad Gehäuse für Armbanduhren
US6321282B1 (en) * 1999-10-19 2001-11-20 Rambus Inc. Apparatus and method for topography dependent signaling
US9057272B2 (en) * 2012-06-29 2015-06-16 United Technologies Corporation Protective polishing mask
CN106406070A (zh) * 2014-10-21 2017-02-15 宝路华公司 表
EP3657269A1 (de) * 2018-11-22 2020-05-27 Blancpain SA Resonanzorgan für schlagwerkmechanismus einer armbanduhr oder einer spieluhr

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535542A (en) * 1923-02-15 1925-04-28 Scovill Manufacturing Co Nonferrous alloy
US2234552A (en) * 1939-10-23 1941-03-11 Chicago Dev Co Hardened nonferrous alloy
US2393906A (en) * 1943-09-04 1946-01-29 Mallory & Co Inc P R Metal composition and bearing
CH352965A (fr) * 1958-03-13 1961-03-15 Emir S A Procédé de fabrication d'une carrure de boîte de montre-bracelet et carrure obtenue par ce procédé
GB1207807A (en) * 1967-06-19 1970-10-07 John Holroyd & Company Ltd Casting of copper based alloys
CH1868570A4 (de) * 1970-12-16 1973-06-15
DE3235832A1 (de) * 1982-09-28 1984-04-05 Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt Verwendung einer goldfarbenen kupferlegierung zur herstellung von beschlaegen und dergleichen
CH664377A5 (de) * 1986-01-16 1988-02-29 Balzers Hochvakuum Dekorative schwarze verschleissschutzschicht.

Also Published As

Publication number Publication date
CH674293GA3 (de) 1990-05-31
CN1043804A (zh) 1990-07-11
DE68901453D1 (de) 1992-06-11
US5021101A (en) 1991-06-04
CH674293B5 (de) 1990-11-30
JPH02221359A (ja) 1990-09-04
GR3006335T3 (de) 1993-06-21
CA2005218A1 (en) 1990-06-21
EP0374669A1 (de) 1990-06-27

Similar Documents

Publication Publication Date Title
EP0221492B1 (de) Gegenstand mit Verschleissschutzschicht aus Edelmetall
EP0258283B1 (de) Verfahren zum beschichten eines substrates mit einem verschleissfesten, dekorativen überzug und ein gemäss diesem verfahren hergestellter artikel
EP0787683B1 (de) Bordotiertes Titaniumnitrid, Beschichtung bestehend aus dieser neuen Verbindung eines Substrats und Körper mit einer solchen Beschichtung
FR2598644A1 (fr) Produit abrasif diamante thermostable et procede de fabrication d'un tel produit
CN100422386C (zh) 装饰品的表面处理方法、装饰品和钟表
CH702836B1 (fr) Pièce décorative réalisée par incrustation et pièce d'horlogerie comprenant une telle pièce.
EP0119459B1 (de) Stück, das ein mit einem harten und korrosionsfesten Überzug versehenes Substrat enthält
EP3220212B1 (de) Dekorationsverfahren für eine uhrkomponente
EP0374669B1 (de) Vorrichtung zur Herstellung eines Kupferuhrengehäuses
EP0738787B1 (de) Verfahren zur Herstellung eines diamantbeschichteten Metallkörpers
EP3591099A1 (de) Herstellungsverfahren eines keramikteils, das zumindest teilweise mit einer elektrisch leitenden schicht beschichtet ist
EP3626854A1 (de) Verfahren zur verbesserung der adhäsion einer schutzschicht gegen das anlaufen von silber auf einem substrat, das eine versilberte oberfläche umfasst
JPH0222452A (ja) 装飾部材
EP0411079B1 (de) Verfahren zur abscheidung von mindestens einer stärke von mindestens einem dekorativen werkstoff über einen gegenstand und dadurch erhaltener gegenstand
CH715153B1 (fr) Procédé de fabrication d'une pièce en céramique revêtue au moins partiellement d'une couche électriquement conductrice.
EP3626855A1 (de) Verfahren zur verbesserung des glanzes einer versilberten abschlussoberfläche eines substrats, die gegen das anlaufen des silbers mit einer schutzschicht geschützt wird
CH712264A2 (fr) Procédé de décoration d'un composant horloger.
JP4909477B2 (ja) 装飾部材及び装飾部材の製造方法
JP2006249510A (ja) 装飾品の製造方法、装飾品および時計
EP3954247B1 (de) Mit steinen verzierte schwarze komponente und ihr herstellungsverfahren
CH684915B5 (fr) Procédé d'obtention d'une empreinte gravée pourvue d'un matériau de contraste.
EP4306678A1 (de) Verfahren zur herstellung eines schwarzen und selbstheilenden erscheinungsbildes mit edelmetallsubstrat und so hergestelltes teil
CH543764A (fr) Procédé de fabrication d'éléments constitutifs d'une boîte de montre
JP4100318B2 (ja) 装飾品の表面処理方法
EP3626856A1 (de) Substrat, das eine versilberte oberfläche umfasst, die gegen das anlaufen des silbers geschützt ist, und herstellungsverfahren eines solchen substrats

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

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19900712

17Q First examination report despatched

Effective date: 19911007

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ETA SA FABRIQUES D'EBAUCHES

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920506

REF Corresponds to:

Ref document number: 68901453

Country of ref document: DE

Date of ref document: 19920611

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3006335

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931211

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931211

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19951215

Year of fee payment: 7

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3006335