CH257785A - Alloy intended in particular to replace lining and gilding in watchmaking and jewelry. - Google Patents
Alloy intended in particular to replace lining and gilding in watchmaking and jewelry.Info
- Publication number
- CH257785A CH257785A CH257785DA CH257785A CH 257785 A CH257785 A CH 257785A CH 257785D A CH257785D A CH 257785DA CH 257785 A CH257785 A CH 257785A
- Authority
- CH
- Switzerland
- Prior art keywords
- jewelry
- watchmaking
- gilding
- gold
- palladium
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Description
Alliage destiné notamment à remplacer le doublé et le dorage en horlogerie et en bijouterie. La présente invention a pour objet un alliage destiné notamment à remplacer le doublé et le dorage en horlogerie et en bijou terie, caractérisé par le fait qu'il contient au moins trois des quatre métaux or, palladium, cuivre et aluminium, dans une proportion en poids comprise entre 2 et 5 % d'or, jusqu'à o,3% de palladium, entre 87,5 et<B>90%</B> de cuivre et entre 5 et 7,5% d'aluminium.
Les métaux composants sont fondus dans le vide dans l'ordre or, palladium, cuivre et aluminium; l'alliage obtenu est ensuite coulé dans le vide en barres ou en lingots qu'on travaille ensuite comme un autre métal.
La fonte et lai coulée s'effectuent dans le vide afin d'éviter l'action particulièrement nuisible que pourrait avoir l'air sur le cuivre. L'addition de palladium augments la résis- tanee,de l'alliage à l'oxydation.
1 kg d'alliage .destiné notamment à la; fabrication des bracelets et boîtes de montres pour montres-bracelets peut, par exemple, être préparé en fondant successivement dans le vide 49 g d'or, 1 g de palladium, 875 g de cuivre auxquels on ajoute 75 g d'alumi nium.
On peut, par exemple, préparer 1 kg d'alliage .destiné notamment à la fabrication de bijoux pour dames, y compris les bracelets, en fondant successivement dans le vide 25 g d'or, 1 g de palladium, 899 g de cuivre, aux quels on ajoute 75 g d'aluminium.
Si l'on n'a pas à craindre particulièrement l'effet de l'oxydation sur l'alliage à préparer, on pourra supprimer le palladium et répar tir le poids relatif à ce composant sur les trois autres métaux restants.
L'alliage obtenu est brillant, résistant à l'action -de l'air, très léger par rapport à l'or, possède un point de fusion élevé, et il est, de plus, facile à travailler comme l'or et bon marché.
Alloy intended in particular to replace lining and gilding in watchmaking and jewelry. The present invention relates to an alloy intended in particular to replace doubling and gilding in watchmaking and jewelry, characterized in that it contains at least three of the four metals gold, palladium, copper and aluminum, in a proportion of weight between 2 and 5% gold, up to 0.3% palladium, between 87.5 and <B> 90% </B> copper and between 5 and 7.5% aluminum.
The component metals are melted in a vacuum in the order of gold, palladium, copper and aluminum; the alloy obtained is then cast in a vacuum into bars or ingots which are then worked like another metal.
Melting and casting are carried out in a vacuum in order to avoid the particularly harmful action which the air could have on the copper. The addition of palladium increases the resistance of the alloy to oxidation.
1 kg of alloy. Intended in particular for; manufacture of bracelets and watch cases for wristwatches can, for example, be prepared by successively melting in vacuum 49 g of gold, 1 g of palladium, 875 g of copper to which is added 75 g of aluminum.
One can, for example, prepare 1 kg of alloy. Intended in particular for the manufacture of ladies' jewelry, including bracelets, by successively melting in vacuum 25 g of gold, 1 g of palladium, 899 g of copper, to which is added 75 g of aluminum.
If one does not have to particularly fear the effect of the oxidation on the alloy to be prepared, one can remove the palladium and repair the relative weight of this component on the three other remaining metals.
The alloy obtained is bright, resistant to the action of air, very light compared to gold, has a high melting point, and it is, moreover, easy to work like gold and good. market.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH257785T | 1947-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH257785A true CH257785A (en) | 1948-10-31 |
Family
ID=4472338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH257785D CH257785A (en) | 1947-02-01 | 1947-02-01 | Alloy intended in particular to replace lining and gilding in watchmaking and jewelry. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH257785A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3976479A (en) * | 1974-03-12 | 1976-08-24 | The United States Of America As Represented By The United States Energy Research And Development Administration | Alloy solution hardening with solute pairs |
-
1947
- 1947-02-01 CH CH257785D patent/CH257785A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3976479A (en) * | 1974-03-12 | 1976-08-24 | The United States Of America As Represented By The United States Energy Research And Development Administration | Alloy solution hardening with solute pairs |
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