decorations

Abstract

To provide an alloy for decorations that can be produced at a relatively low cost and that allows new colors to be produced. The ornament is made of a copper-containing gold alloy, which is composed of 58.5 to 58.7% by weight of gold, 26.9 to 32.6% by weight of copper, 5.7 to 10.7% by weight of silver, 1.0 to 3.0% by weight of palladium, and the balance having 0.7 to a maximum of 2.2% by weight of zinc.

Description

[Technical Field]

[0001] The present invention relates to an ornament (jewelry), in particular a ring-shaped ornament, a part of an ornament or a semi-finished product for the manufacture of an ornament, an alloy for the manufacture of such an ornament and a method for the manufacture of an alloy for an ornament, according to the preamble of claim 1. The ornament is in this case made from a gold alloy containing a copper component. [Background technology]

[0002] From DE 60310555T2, alloys for the production of timepieces, ornaments and jewellery are known, which contain at least 75% by weight of gold and at least 14% by weight of copper. Furthermore, it is described how, in the case of gold alloys of this type, colour tones from red through rose to yellow can be achieved depending on the proportions of copper and silver. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] DE60310555T2 Summary of the Invention [Problem to be solved by the invention]

[0004] A drawback of the known alloys is that they are relatively expensive to produce due to their high gold content. Furthermore, there is a demand in the jewelry market for alloys that go beyond the existing color gold alloys, particularly when producing gold jewelry, and which allow new color variations, and which can be produced relatively cost-effectively.

[0005] The object of the present invention is therefore to avoid the above-mentioned drawbacks in this type of decoration and to make it possible to create new colors. [Means for solving the problem]

[0006] According to a first aspect of the present invention, there is provided an ornament made of a copper-containing gold alloy. In the decorative article, The gold alloy is The entire alloy is taken as 100 mass%, 58.5% to 58.7% by weight of gold; 26.9% to 32.6% by weight of copper; 5.7% to 10.7% by weight of silver; 1.0% to 3.0% by weight of palladium, and 、 0 0.7% to 2.2% by mass of zinc lead mosquito It will consist of It is characterized by: According to a second aspect of the present invention, there is provided a decoration alloy for the manufacture of the decoration of the present invention. According to a third aspect of the present invention, there is provided a method for manufacturing the decorative alloy of the present invention. In the manufacturing method, The zinc component is obtained by melting brass with gold, copper, silver and palladium. It is characterized by: DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, a preferred embodiment of the present invention will be described. (Mode 1) See the first aspect of the present invention above. (Embodiment 2) In the decorative article according to embodiment 1, The gold alloy is The entire alloy is taken as 100 mass%, 58.6% by mass gold, 29.0% to 29.5% by weight of copper; 8.5% to 9.0% by weight of silver; 1.9% to 2.1% by weight of palladium, and 、 1 0.4% to 1.5% by weight of zinc lead mosquito It is preferable that the sensor is composed of: (Mode 3) See the second aspect of the present invention above. (Mode 4) See the third aspect of the present invention above. (Mode 5) In the production method according to Mode 4, The brass is preferably Cu63Zn37 brass. (Mode 6) In the production method according to Mode 4 or Mode 5, The melt is preferably poured manually into the mold after its production. (Mode 7) In the production method according to Mode 4 or Mode 5, After its production, the melt is preferably subjected to a continuous casting process.

[0008] The above-mentioned problem is solved by an ornament (jewelry) made of a copper-containing gold alloy having the features of claim 1. In this case, the gold alloy is composed of at least 58.5% to at most 58.7% by weight of gold, at least 26.9% to at most 32.6% by weight of copper, at least 5.7% to at most 10.7% by weight of silver, at least 1.0% to at most 3.0% by weight of palladium, and the remainder being at least 0.7% to at most 2.2% by weight of zinc. This results in an ornament with a novel color tone that can be called champagne.

[0009] In a particularly preferred embodiment, the (gold) alloy is composed of 58.6% by weight gold, 29.0 to 29.5% by weight copper, 8.5 to 9.0% by weight silver, 1.9 to 2.1% by weight palladium, and the balance 1.4 to 1.5% by weight zinc. This composition allows for an exceptionally intense champagne color to be achieved, ensuring exceptionally good workability of the gold-copper alloy. Furthermore, a gold alloy with a champagne color can be produced in this manner in a comparatively cost-effective manner.

[0010] Furthermore, the above-mentioned object is achieved by a method in which the zinc component of the (gold) alloy is obtained at least in part by melting brass and other (metallic) components (other than zinc). In this way, the zinc component of the melt can be produced in a particularly simple manner.

[0011] Advantageously, the brass to be melted in this case is constituted by Cu63Zn37 brass, as this allows the desired zinc component to be melted particularly simply and in precise amounts.

[0012] After the preparation of the corresponding melt (of the constituent metals of the gold alloy), the melt is preferably poured and cast by hand (into a mould or the like) to enable the production of small or even particularly filigree ornaments in champagne tones.

[0013] Alternatively or additionally, the melt (of the constituent metals of the gold alloy), especially in larger quantities, can be subjected to continuous casting, for example to make it possible to produce semi-finished products which can then be further processed into decorative articles, for example to produce fully or partially champagne-colored decorative rings. [Example]

[0014] Below is given one preferred composition of the (metal) melt for the production of decoration alloys and decorations with an especially brilliant champagne color tone.

[0015] 58.6% by mass gold 26.7% by mass copper 8.7% by mass silver 2.0% by mass palladium 4.0 mass% CuZn37-brass

Claims

1. An ornament made of a copper-containing gold alloy, The gold alloy is, based on the total alloy content being 100 mass %, 58.5% to 58.7% by weight of gold; 26.9% to 32.6% by weight of copper, 5.7% to 10.7% by weight of silver; 1.0% to 3.0% by weight of palladium, and 0.7% to 2.2% by weight of zinc It consists of A decorative object characterized by:

2. The decorative article according to claim 1, The gold alloy is, based on the total alloy content being 100 mass %, 58.6% by weight of gold, 29.0% to 29.5% by weight of copper, 8.5% to 9.0% by weight of silver; 1.9% to 2.1% by weight of palladium, and 1.4% to 1.5% by weight of zinc It consists of A decorative object characterized by:

3. A decoration alloy for the manufacture of decorations according to claim 1 or 2.

4. 4. A method for producing a decorative alloy according to claim 3, comprising: The zinc component is obtained by melting brass with gold, copper, silver and palladium. A manufacturing method characterized by:

5. The manufacturing method according to claim 4, The brass is Cu63Zn37 brass. A manufacturing method characterized by:

6. The manufacturing method according to claim 4 or 5, The melt is poured manually into the mold after its production A manufacturing method characterized by:

7. The manufacturing method according to claim 4 or 5, The melt is subjected to continuous casting after its production. A manufacturing method characterized by: