EP2931929B1 - Alliage pour la production de bijoux - Google Patents

Alliage pour la production de bijoux Download PDF

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Publication number
EP2931929B1
EP2931929B1 EP13824341.5A EP13824341A EP2931929B1 EP 2931929 B1 EP2931929 B1 EP 2931929B1 EP 13824341 A EP13824341 A EP 13824341A EP 2931929 B1 EP2931929 B1 EP 2931929B1
Authority
EP
European Patent Office
Prior art keywords
weight
gold
alloy
platinum
palladium
Prior art date
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Active
Application number
EP13824341.5A
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German (de)
English (en)
Other versions
EP2931929A1 (fr
Inventor
Mario GARFARINO
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.)
Crieri Srl
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Crieri Srl
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Publication date
Application filed by Crieri Srl filed Critical Crieri Srl
Priority to PL13824341T priority Critical patent/PL2931929T3/pl
Publication of EP2931929A1 publication Critical patent/EP2931929A1/fr
Application granted granted Critical
Publication of EP2931929B1 publication Critical patent/EP2931929B1/fr
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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
    • C22C9/04—Alloys based on copper with zinc as the next major constituent
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/002—Metallic materials
    • A44C27/003—Metallic alloys

Definitions

  • the invention concerns an alloy for the production of jewels, in particular precious jewels or trinkets.
  • the invention concerns jewels, produced with this alloy.
  • the object of the present invention is to provide an improved alloy that overcomes the drawbacks listed above.
  • the object of the present invention is mainly to propose an alloy with a low precious metal carat rating that, in addition to not oxidizing easily and having good workability, imitates the aspect and the brightness of precious metals and their alloys.
  • the alloys described herein can always contain other elements, meaning elements that are not listed as components that make up the alloy, in the form of inevitable traces. These traces derive from impurities present in the raw materials or are residues of auxiliary materials used during the production or processing of the alloy. In this case, the remaining percentage needed to reach 100% by weight is constituted by copper and inevitable impurities.
  • the traces are present in total quantities not exceeding 0.2% by weight.
  • metals such as gallium and/or indium helps lower the melting point of the alloy.
  • forming in this case silicon-free alloys are preferably used
  • welding in this case indium should be preferably added
  • the expert in the art thanks to his/her general knowledge of the matter, changes the percentages of the auxiliary components.
  • the low carat rating of gold, platinum and palladium, respectively makes it possible to produce alloys that imitate the colours of the respective precious metals or their alloys while at the same time showing a high degree of brightness.
  • the alloy is very elastic, easy to clean, polish and machine and has good lapping values, partly better than those of other alloys with higher carat rating.
  • the alloy does not contain iridium, germanium, silicon, osmium, tin, indium and gallium as elements that make up the alloy.
  • the alloy in any case, can contain these elements within the group consisting of traces of other elements.
  • compositions that in the search for economic alloys with low precious metal carat rating have proved to be particularly suited to be used to make trinkets, because they do not oxidize easily, are easy to machine and shiny, and imitate the shades of alloys with high carat rating.
  • a much preferred variant embodiment of the invention concerns an alloy comprising 4.17% by weight of a metal or a combination of metals selected among a) platinum, b) palladium, and c) platinum and palladium.
  • Preferred quantities of gold are 0.2% by weight - 3.5% by weight.
  • silver is present in quantities included between 8 and 10% by weight and zinc is present in quantities included between 15 and 19% by weight. Even more preferably, the quantity of silver corresponds to 8.8-9.2% by weight, the quantity of zinc to 16.8-17.2% by weight and the quantity of copper to 69.8-70.2% by weight.
  • a further preferred embodiment of the alloy according to the invention is constituted by an alloy comprising 4.17% by weight of a combination of gold, palladium and platinum, in which the three metals are present in equal quantities expressed in weight percentages.
  • the alloy comprises 4.17% by weight of a combination of gold and palladium or of a combination of gold and platinum, in which the two metals are present in equal quantities expressed in weight percentages.
  • a very advantageous variant embodiment of the invention concerns an alloy comprising 0.5% gold by weight and preferably at least 0.1% platinum by weight. Such an alloy is extraordinarily bright.
  • the alloy is consisting of 0.5% gold by weight; 12.5% silver and palladium by weight; 17% zinc by weight and 70% copper by weight wherein there is 0.1% platinum by weight which correspondingly partially replaces silver, palladium, zinc and/or copper, in accordance with the scope of the invention.
  • the invention furthermore concerns a jewel, produced from an alloy according to the invention.
  • Other possible items are, for example, coins, tableware, candle holders or other items of art handicraft.
  • the alloy according to the invention is suited to be used in the processing cycles that are typical of the jewellery sector.
  • the invention achieves the object to provide an economic alloy with low carat rating of gold, platinum and palladium that, in addition to not oxidizing easily and having good workability, imitates the appearance of gold or its alloys with high carat rating and is considerably bright.
  • the production of the alloy follows the methods known in the art for producing alloys containing gold, silver, brass, etc. which are not described herein for the sake of brevity.
  • Table 1 gold platinum palladium silver zinc copper [% by wt.] [% by wt.] [% by wt.] [% by wt.] [% by wt.] [% by wt.] [% by wt.] [% by wt.] Ex. 1 0,5 0 12,5 17 70 Ex. 2 0,5 0,1 0 12,4 17 70 Ex. 3 1,39 1,39 1,39 8,83 17 70 Ex. 4 2,09 2,09 0 8,83 17 70 Ex. 5 2,09 0 2,09 8,83 17 70 Ex. 6 4.17 of which 0.2-3.5 gold 8-10 15-19 rest Ex. 7 4.17 of which 0.5-1.0 gold 8-10 15-19 rest Ex. 8 4.17 of which 1.1-2.5 gold 8-10 15-19 rest Ex. 9 4.17 of which 2.6-3.5 gold 8-10 15-19 rest
  • the palladium and silver content of Ex. 1 is according to the claims of the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)
  • Medicinal Preparation (AREA)
  • Saccharide Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Claims (10)

  1. Alliage pour la production de bijoux, constitué de: 7-16% en poids d'argent; 15-36% en poids de zinc; 4,17% en poids d'une combinaison de métaux choisis parmi a) or et platine, b) or et palladium et c) or, platine et palladium; 0-0,5% en poids d'un ou plusieurs métaux choisis parmi iridium, germanium, silicium, osmium, étain, indium et gallium; le reste étant constitué de cuivre et d'impuretés inévitables, où l'alliage comprend 0,2-3,5% en poids d'or, préférablement 0,5-1% en poids d'or ou 1,1-2,5% en poids d'or ou 2,6-3,5% en poids d'or.
  2. Alliage pour la production de bijoux, constitué de: 7-16% en poids d'argent; 15-36% en poids de zinc; 0,1-4,17% en poids d'un métal ou une combinaison de métaux choisis parmi a) platine, b) palladium et c) platine et palladium; 0-0,5% en poids d'un ou plusieurs métaux choisis parmi iridium, germanium, silicium, osmium, étain, indium et gallium; le reste étant constitué de cuivre et d'impuretés inévitables.
  3. Alliage selon la revendication 2, caractérisé en ce qu'il comprend 4,17% en poids d'un métal ou une combinaison de métaux choisis parmi a) platine, b) palladium et c) platine et palladium.
  4. Alliage selon la revendication 1 ou 3, caractérisé en ce qu'iridium, germanium, silicium, osmium, étain, indium et gallium ne sont pas présents, que l'argent est présent en quantités comprises entre 8 et 10% en poids et que le zinc est présent en quantités comprises entre 15 et 19% en poids.
  5. Alliage selon l'une quelconque des revendications 1 ou 4, caractérisé en ce qu'il comprend 4,17% en poids d'une combinaison d'or, palladium et platine, où les trois métaux sont présents en quantités égales exprimées en pourcentages de poids.
  6. Alliage selon l'une quelconque des revendications 1 ou 4, caractérisé en ce qu'il comprend 4,17% en poids d'une combinaison d'or et palladium ou d'une combinaison d'or et platine, où les deux métaux sont présents en quantités égales exprimées en pourcentages de poids.
  7. Alliage pour la production de bijoux, constitué de: 7-16% en poids d'argent; 15-36% en poids de zinc; jusqu'à 4,17% en poids d'un métal ou une combinaison de métaux choisis parmi a) or et platine, b) or et palladium et c) or, platine et palladium; 0-0,5% en poids d'un ou plusieurs métaux choisis parmi iridium, germanium, silicium, osmium, étain, indium et gallium; le reste étant constitué de cuivre et d'impuretés inévitables, où l'alliage comprend 0,5% en poids d'or et préférablement au moins 0,1% en poids de platine.
  8. Alliage selon la revendication 7, caractérisé en ce qu'il est constitué de 0,5% en poids d'or; 12,5% en poids d'argent et palladium; 17% en poids de zinc et 70% en poids de cuivre, où 0,1% en poids de platine est présent, qui proportionnellement remplace partiellement l'argent, le palladium, le zinc et/ou le cuivre.
  9. Alliage selon l'une quelconque des revendications 1, 3 ou de 5 à 8, caractérisé en ce que 0-0,5% en poids d'un ou plusieurs métaux sont choisis parmi iridium, germanium, silicium et gallium.
  10. Bijou produit à partir d'un alliage selon l'une quelconque des revendications précédentes.
EP13824341.5A 2012-12-17 2013-12-16 Alliage pour la production de bijoux Active EP2931929B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13824341T PL2931929T3 (pl) 2012-12-17 2013-12-16 Stop do wytwarzania wyrobów jubilerskich

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000335A ITVI20120335A1 (it) 2012-12-17 2012-12-17 Lega per la produzione di monili
PCT/IB2013/002810 WO2014096938A1 (fr) 2012-12-17 2013-12-16 Alliage pour la production de bijoux

Publications (2)

Publication Number Publication Date
EP2931929A1 EP2931929A1 (fr) 2015-10-21
EP2931929B1 true EP2931929B1 (fr) 2017-06-14

Family

ID=47683984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13824341.5A Active EP2931929B1 (fr) 2012-12-17 2013-12-16 Alliage pour la production de bijoux

Country Status (5)

Country Link
EP (1) EP2931929B1 (fr)
ES (1) ES2640020T3 (fr)
IT (1) ITVI20120335A1 (fr)
PL (1) PL2931929T3 (fr)
WO (1) WO2014096938A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125246A (en) * 1979-03-19 1980-09-26 Murao Shoten:Kk Quaternary gold alloy
AU523626B2 (en) * 1979-01-18 1982-08-05 Murao Shoten K.K. (au + cu) base-ag-zn alloy
JPS5695491A (en) * 1979-12-28 1981-08-01 Masatoshi Tsuda Copper-group brazing alloy
DE102005045477A1 (de) * 2005-09-22 2007-03-29 Qvc Handel Gmbh Goldlegierung
US20090317292A1 (en) * 2008-06-20 2009-12-24 Gertge Annette T Variable karat gold alloys
US20090317291A1 (en) * 2008-06-20 2009-12-24 Annette Gertge Variable karat gold alloys
KR20120080810A (ko) * 2011-01-10 2012-07-18 이용화 저순도(低純度) 골드용 합금조성물 및 그것을 이용한 저순도 골드
KR20120081724A (ko) * 2011-01-12 2012-07-20 이용화 저순도(低純度) 골드용 합금조성물 및 그것을 이용한 저순도 골드
KR20120083184A (ko) * 2011-01-17 2012-07-25 이용화 저순도(低純度) 화이트 골드용 합금조성물 및 그것을 이용한 저순도 화이트 골드
KR20120085127A (ko) * 2011-01-21 2012-07-31 이한동 저순도(低純度) 골드용 합금조성물 및 그것을 이용한 저순도 골드

Also Published As

Publication number Publication date
ES2640020T3 (es) 2017-10-31
ITVI20120335A1 (it) 2014-06-18
PL2931929T3 (pl) 2017-11-30
EP2931929A1 (fr) 2015-10-21
WO2014096938A1 (fr) 2014-06-26

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