EP2260116A1 - Alliage pour bijou à base de platine - Google Patents

Alliage pour bijou à base de platine

Info

Publication number
EP2260116A1
EP2260116A1 EP10712084A EP10712084A EP2260116A1 EP 2260116 A1 EP2260116 A1 EP 2260116A1 EP 10712084 A EP10712084 A EP 10712084A EP 10712084 A EP10712084 A EP 10712084A EP 2260116 A1 EP2260116 A1 EP 2260116A1
Authority
EP
European Patent Office
Prior art keywords
weight
platinum
alloy
alloy according
indium
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.)
Granted
Application number
EP10712084A
Other languages
German (de)
English (en)
Other versions
EP2260116B1 (fr
Inventor
Heike Tews
Georg Steiner
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.)
Heimerle and Meule GmbH
Original Assignee
Heimerle and Meule GmbH
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 Heimerle and Meule GmbH filed Critical Heimerle and Meule GmbH
Publication of EP2260116A1 publication Critical patent/EP2260116A1/fr
Application granted granted Critical
Publication of EP2260116B1 publication Critical patent/EP2260116B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/04—Alloys based on a platinum group metal

Definitions

  • the invention relates primarily to new platinum jewelery alloys as well as semi-finished products made with the aid of these alloys.
  • platinum Because of its characteristic gray-white color, platinum has long been used in jewelry production and thus also in the jewelry industry. However, like all precious metals in the elemental state, platinum is comparatively soft, so that although it can be processed easily, it does not have the necessary strength and durability for everyday use. This is why platinum is usually alloyed with other metals, especially in the jewelery sector, in order to increase its strength.
  • platinum alloys are already known. Mention should be made here only two substance systems of platinum and ruthenium, platinum and tungsten, platinum and copper and platinum and palladium and platinum and gold.
  • a disadvantage of the known platinum alloys is that they are usually not melted or only with great difficulty in the so-called continuous casting process and thus can be processed into semi-finished products for the jewelry industry.
  • Continuous casting is known to the person skilled in the art as a method for the production of semi-finished products from metals and alloys, wherein this method is generally carried out continuously, so that an endless strand of the desired semifinished product is provided.
  • the invention has the object to provide new platinum jewelry alloys available. These alloys should be able to be melted in particular by continuous casting, so that they can be produced by continuous casting and processed into semi-finished products. In addition, these alloys should also be able to be produced from the material side at a reduced cost, i. High-priced precious metals should only be present in the lowest possible proportion in these alloys. However, the new alloys should retain the properties necessary for their processing in the jewelry industry, for example in terms of their hardness on the one hand and on their workability on the other hand.
  • the new platinum jewelery alloy comprises 50.0% by weight to 70.0% by weight of platinum (Pt),
  • the platinum jewelery alloy comprises at least the following constituents, namely
  • the abovementioned alloys may optionally also contain impurities in small amounts.
  • impurities are understood to mean all metallic or non-metallic elements and substances that are not deliberately added or intentionally left in the alloy.
  • platinum contents between 60% by weight and 70% by weight, in particular between 60% by weight and 65% by weight, are preferred with regard to the platinum content.
  • platinum contents between 60% by weight and 62% by weight are to be particularly emphasized.
  • tungsten contents between 0.1% by weight and 3% by weight are preferred, tungsten contents in turn between 0.5% by weight and 1.5% by weight being particularly noteworthy.
  • the amounts of these elements present are preferably between 0.1% by weight and 1% by weight, in particular between 0.1% by weight and 0.5% by weight.
  • Such elements are known as so-called grain refiners because they can cause the resulting alloy to have a smaller average grain size compared to alloys that do not contain these elements.
  • ruthenium, rhodium and iridium of at least ruthenium are contained in the said three elements, preferably only ruthenium is provided as such an additive.
  • the content of indium, gallium, germanium, tin and / or zinc is 2 wt .-% to 6 wt .-%, within this range contents between 2 wt .-% and 4 wt .-% are particularly noteworthy.
  • melting point depressants i.
  • the melting point can be lowered relative to alloys which do not contain these elements.
  • these elements increase the hardness of the resulting alloys.
  • indium is contained in the mentioned group of elements (indium, gallium, germanium, tin and / or zinc), preferably only indium is provided as such an additive in the alloy ,
  • the content of silver and / or copper is between 30 wt .-% and 40 wt .-%, preferably between 32 wt .-% and 38 wt .-%.
  • platinum jewelery alloys according to the invention consisting of
  • these alloys are (preferably) palladium-free. This is i.a. This is advantageous because palladium is a high-priced precious metal. If the use of palladium can be avoided, this makes a jewelry alloy much cheaper.
  • the platinum-jewelery alloy according to the invention may be according to the invention characterized in that it has a melting range below 1350 0 C.
  • alloys in particular the alloys used in the jewelry industry no sharp melting points, but a melting range, the so-called melting interval, within which the alloys initially soften until they then liquefy increasingly and then go into the actual liquid state.
  • melting intervals are below 1350 0 C, so that they can be easily melted and processed.
  • it is precisely in continuous casting that it is not necessary to have excessively high melting intervals for an alloy in order to be able to use this method.
  • the molten material must be sufficiently fluid for a certain period of time to convert the material into the strand. Here it must be prevented that the material solidifies too early.
  • the hardness of the alloy according to the invention preferably has a so-called Vickers hardness of> 180 HV, in particular of> 200 HV. Accordingly, with the alloys according to the invention, the so-called delivery hardnesses for jewelry alloys, in particular for pipes and rings, of 210 ⁇ 20 HV5 can readily be provided.
  • HV5 corresponds to the test load of 50 N (Newton). This specification is a common indication of the hardness of such materials for precious metal alloys.
  • the invention comprises a semi-finished product for jewelery production, which is at least partially, preferably completely, made of an alloy according to the invention.
  • these semi-finished products are prefabricated geometric shapes made of the corresponding alloy material, which are then further processed manually or industrially to the respective jewelry end products.
  • such semi-finished products gen usually for example, pipes, rods, rings, sheets, strips, wires and the like.
  • Such semi-finished products are, as already mentioned, particularly good in the continuous casting process. They are first produced as a semi-finished cast product and then processed further to the final semi-finished product with the desired dimensions, preferably formed.
  • the semifinished products according to the invention are tubular or annular semi-finished products.
  • Such semi-finished products are particularly suitable for the production of jewelry rings including wedding rings.
  • the invention also encompasses the process for producing the alloys according to the invention.
  • This method is characterized in that at least two of the elements that make up the alloy, at least one master alloy is produced. This master alloy is then subsequently fused together with the other elements making up the alloy or with other master alloys containing such elements to form the alloy according to the invention.
  • the invention as a whole is associated with a whole series of advantages.
  • a platinum jewelery alloy i. to provide a jewelry alloy containing platinum as a main ingredient with an excellent combination of properties.
  • the melting interval of the alloy according to the invention can be below 1350 ° C.
  • the alloy can be easily in the conventional continuous casting process, the benefits of which have already been mentioned. the, process.
  • Such conventional continuous casting processes work without a vacuum and are also used, for example, for standard gold alloys in the jewelry industry.
  • the alloy according to the invention is approximately in the range of the values for such melt intervals of palladium-containing white gold alloys, for example of gold-palladium alloys with a palladium content of 19% by weight.
  • the invention platinum jewelery alloys in the same way processable, namely with the continuous casting process, such as such white gold alloys.
  • the alloys according to the invention preferably contain no palladium.
  • the use of this expensive precious metal can be avoided in favor of other cheaper components. Therefore, the alloys of the invention are of great commercial importance.
  • the alloys according to the invention can provide all the other properties required by such jewelery alloys. This is, for example, the hardness, with readily Vickers hardness of 200 HV can be achieved. Nevertheless, the alloys according to the invention are sufficiently fine-grained to ensure their machinability by machining techniques, be it manually by the jewelry designer or on machines, such as CNC machines in the jewelry industry. They are also diamond coatable (with the help of natural diamonds machinable) and very good polishable.
  • a platinum alloy according to the invention is produced which, based on the total weight 1000 (in% o), has the following constituents:
  • this alloy according to the invention thus has the composition:
  • the resulting alloy with a white color has a melting interval between 1185 0 C and 1310 0 C and can be processed accordingly in a continuous casting process to semi-finished products, in particular to pipes and rings. It has a density of 13.6 g / cm 3 .
  • the hardness of the alloy is annealed (at 950 0 C) 210 ( ⁇ 10) HV10 and after a conversion to 80% of its initial thickness by rolling 360 HV10.
  • the alloy is fine-grained (average particle size approx. 25 ⁇ m) and can be excellently machined (chipping) by machining.
  • a second platinum alloy according to the invention is prepared which has the following constituents, based on the total weight 1000 (in% o):
  • this alloy according to the invention thus has the composition:
  • Example 2 For the preparation of the alloy according to the invention according to Example 2, the master alloys of platinum and tungsten or of platinum, copper and indium mentioned in connection with Example 1 are likewise initially provided. These two master alloys then become melted together with ruthenium and silver in an oven.
  • the melting interval of the alloy obtained according to Example 2 is between 1200 ° C. and 1300 ° C. Accordingly, this alloy can likewise be processed in a continuous casting process to give the abovementioned semi-finished products.
  • the alloy has a white color and a density of 13.8 g / cm 3 . Their hardness is annealed (at 950 0 C) at 190 ( ⁇ 10) HV10.
  • the alloy is also fine-grained and can be machined very well by machining.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)

Abstract

L'invention porte sur un alliage pour bijou à base de platine, qui contient 50 à 70 % en poids de platine, 2 à 15 % en poids d'au moins un élément choisi dans le groupe constitué par l'indium, le gallium, le germanium, l'étain et le zinc, et 0,5 à 40 % en poids d'argent et/ou de cuivre. De préférence, peuvent encore être présents au moins un élément du groupe constitué par le ruthénium, le rhodium, et l'iridium, dans des quantités comprises entre 0,1 et 5,0 % en poids, ainsi que du tungstène dans des quantités comprises entre 0,1 et 5,0 % en poids. De préférence, l'alliage pour bijou à base de platine selon l'invention est constitué de 50,0 à 70,0 % en poids de platine, 0,1 à 5,0 % en poids de tungstène, 0,1 à 5,0 % en poids d'au moins un élément choisi dans le groupe constitué par le ruthénium, le rhodium et l'iridium, 2 à 15 % en poids d'au moins un élément choisi dans le groupe constitué par l'indium, le gallium, le germanium, l'étain et le zinc, et 0,5 à 40 % en poids d'argent et/ou de cuivre. L'alliage selon l'invention est particulièrement bien adapté à la fabrication de semi-produits pour l'industrie des bijoux, par un procédé de coulée continue classique.
EP10712084.2A 2009-04-07 2010-04-01 Alliage pour bijoux contenant du platine Active EP2260116B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910017398 DE102009017398A1 (de) 2009-04-07 2009-04-07 Platin-Schmucklegierung
PCT/EP2010/054408 WO2010115839A1 (fr) 2009-04-07 2010-04-01 Alliage pour bijou à base de platine

Publications (2)

Publication Number Publication Date
EP2260116A1 true EP2260116A1 (fr) 2010-12-15
EP2260116B1 EP2260116B1 (fr) 2014-03-05

Family

ID=41429165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10712084.2A Active EP2260116B1 (fr) 2009-04-07 2010-04-01 Alliage pour bijoux contenant du platine

Country Status (3)

Country Link
EP (1) EP2260116B1 (fr)
DE (2) DE202009013202U1 (fr)
WO (1) WO2010115839A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611279A2 (fr) 2018-08-16 2020-02-19 Eduard G.Fidel GmbH Corps de joaillerie fabriqué d'un alliage de platine
RU2751063C1 (ru) * 2020-11-26 2021-07-07 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Сплав на основе платины 585 пробы

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011171037A (ja) * 2010-02-17 2011-09-01 Tanaka Kikinzoku Kogyo Kk 耐火花消耗特性及び放電特性に優れた点火プラグ電極用の材料
DE102013004052A1 (de) 2013-03-08 2014-09-11 Wieland Edelmetalle Gmbh Platinlegierung zur Herstellung von Schmuck
CN104164585B (zh) * 2014-08-06 2016-08-24 贵研铂业股份有限公司 铂基高弹性合金及其制备方法
EP3177747B1 (fr) * 2014-11-13 2018-01-10 C. Hafner GmbH + Co. KG Alliage de métaux précieux à solidification amorphe, à base de métaux précieux
DE102014016723A1 (de) * 2014-11-13 2016-05-19 C. Hafner Gmbh + Co. Kg Amorph erstarrende Legierung auf Edelmetallbasis
DE202016101015U1 (de) 2016-02-26 2016-03-07 Egf - Eduard G. Fidel Gmbh Schmuckkörper
RU2650220C1 (ru) * 2017-02-21 2018-04-11 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" Ювелирный сплав платины 585 пробы
RU2645624C1 (ru) * 2017-02-21 2018-02-26 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" Ювелирный сплав платины 585 пробы для микролитья
DE102019213587A1 (de) * 2019-09-06 2021-03-11 Heimerle + Meule Gmbh Platin-Schmucklegierung
CN113322394B (zh) * 2021-05-13 2022-03-01 北京有色金属与稀土应用研究所 一种封装用高性能键合铂合金微细材及其制备方法
DE202022002098U1 (de) 2022-09-21 2024-01-16 Bauer-Walser AG Platinlegierung, insbesondere Platin-Schmucklegierung

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DE2206397C3 (de) * 1972-02-11 1975-01-23 Fa. Carl Haas, 7230 Schramberg Verwendung von Palladium- und Platinlegierungen als Werkstoff für Spannbänder in MeBinstrumenten
DE3712839C1 (en) * 1987-04-15 1988-04-21 Degussa Use of platinum alloys having spring properties for jewellery pieces
ATE174970T1 (de) * 1994-10-24 1999-01-15 Ivoclar Ag Verfahren zur herstellung von metallgussteilen
JP3497082B2 (ja) * 1998-08-05 2004-02-16 石福金属興業株式会社 白金、及び白金合金用ろう材
JP2005029879A (ja) * 2003-07-14 2005-02-03 Kuwayama Corp インジウムを含有する宝飾品用硬化白金合金及び製品
EP1711641B1 (fr) 2004-02-04 2010-12-15 Allgemeine Gold- und Silberscheideanstalt AG Alliages de platine et leur procede de production
WO2007014576A1 (fr) * 2005-08-03 2007-02-08 Allgemeine Gold Und Silberscheideanstalt Ag Alliage de platine et son procede de fabrication
US20100139319A1 (en) * 2005-08-03 2010-06-10 Peter Tews Platinum alloy and method of production thereof
DE102006007556A1 (de) * 2006-02-16 2007-08-23 Allgemeine Gold- Und Silberscheideanstalt Ag Platinlegierung und Verfahren zu deren Herstellung
DE102007054871A1 (de) * 2007-11-08 2009-05-20 Heimerle + Meule Gmbh Platin-Schmucklegierung

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611279A2 (fr) 2018-08-16 2020-02-19 Eduard G.Fidel GmbH Corps de joaillerie fabriqué d'un alliage de platine
EP3611279A3 (fr) * 2018-08-16 2020-02-26 Eduard G.Fidel GmbH Corps de joaillerie fabriqué d'un alliage de platine
RU2751063C1 (ru) * 2020-11-26 2021-07-07 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Сплав на основе платины 585 пробы

Also Published As

Publication number Publication date
DE102009017398A1 (de) 2010-10-14
DE202009013202U1 (de) 2009-12-24
WO2010115839A1 (fr) 2010-10-14
EP2260116B1 (fr) 2014-03-05

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