EP2260116B1 - Platin-schmucklegierung - Google Patents

Platin-schmucklegierung Download PDF

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Publication number
EP2260116B1
EP2260116B1 EP10712084.2A EP10712084A EP2260116B1 EP 2260116 B1 EP2260116 B1 EP 2260116B1 EP 10712084 A EP10712084 A EP 10712084A EP 2260116 B1 EP2260116 B1 EP 2260116B1
Authority
EP
European Patent Office
Prior art keywords
weight
alloy
platinum
alloys
ruthenium
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.)
Active
Application number
EP10712084.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2260116A1 (de
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
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Filing date
Publication date
Application filed by Heimerle and Meule GmbH filed Critical Heimerle and Meule GmbH
Publication of EP2260116A1 publication Critical patent/EP2260116A1/de
Application granted granted Critical
Publication of EP2260116B1 publication Critical patent/EP2260116B1/de
Active legal-status Critical Current
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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 binary 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, this method generally being carried out continuously, so that an endless strand of the desired semifinished product is provided.
  • the International Patent Publication WO 2005/075690 A1 discloses a platinum alloy which necessarily contains from 2 to 10% by weight of cobalt.
  • the alloy given in the example of this patent publication consists of 58.6% by weight of platinum, 37.3% by weight of copper and 4.1% by weight of cobalt.
  • the object of the invention is to provide new platinum jewelery alloys. 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 produced from the material side with reduced costs, ie high-priced precious metals should be included only in the smallest 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 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 content of between 0.1% by weight and 3% by weight is preferred, tungsten contents of 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.
  • Iridium included 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. According to the invention, it is preferred if 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.
  • the elements indium, gallium, germanium, tin and / or zinc are known as so-called melting point depressants, ie by adding such elements, the melting point can be lowered compared to alloys which do not contain these elements. In addition, these elements increase the hardness of the resulting alloys.
  • melting point depressants ie by adding such elements, the melting point can be lowered compared to alloys which do not contain these elements. In addition, these elements increase the hardness of the resulting alloys.
  • the content of silver and / or copper is between 30 wt .-% and 40 wt .-%, preferably between 32 wt .-% and 38 wt .-%.
  • the elements of the group silver and copper copper is selected as part of the alloy.
  • these alloys are 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 can be characterized according to the invention in that it has a melting interval below 1350 ° 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 ° 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.
  • the Vickers hardness test is known to the person skilled in the art. 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 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, to 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 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.
  • the obtained white-colored alloy has a melting interval between 1185 ° C. and 1310 ° C. and can accordingly be processed in a continuous casting process into semi-finished products, in particular into tubes and rings. It has a density of 13.6 g / cm 3 .
  • the hardness of the alloy is annealed (at 950 ° 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.
  • 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 also be processed in a continuous casting process to said semifinished products.
  • the alloy has a white color and a density of 13.8 g / cm 3 . Their hardness is annealed (at 950 ° C) at 190 ( ⁇ 10) HV10.
  • the alloy is also fine-grained and can be machined very well by machining.
EP10712084.2A 2009-04-07 2010-04-01 Platin-schmucklegierung Active EP2260116B1 (de)

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 (de) 2009-04-07 2010-04-01 Platin-schmucklegierung

Publications (2)

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

Family

ID=41429165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10712084.2A Active EP2260116B1 (de) 2009-04-07 2010-04-01 Platin-schmucklegierung

Country Status (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016101015U1 (de) 2016-02-26 2016-03-07 Egf - Eduard G. Fidel Gmbh Schmuckkörper
DE202018104717U1 (de) 2018-08-16 2018-08-30 Egf - Eduard G. Fidel Gmbh Schmuckkörper
DE202022002098U1 (de) 2022-09-21 2024-01-16 Bauer-Walser AG Platinlegierung, insbesondere Platin-Schmucklegierung

Families Citing this family (10)

* 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
DE102014016723A1 (de) * 2014-11-13 2016-05-19 C. Hafner Gmbh + Co. Kg Amorph erstarrende Legierung auf Edelmetallbasis
EP3177747B1 (de) * 2014-11-13 2018-01-10 C. Hafner GmbH + Co. KG Amorph erstarrende edelmetall-legierung auf edelmetallbasis
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
RU2751063C1 (ru) * 2020-11-26 2021-07-07 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Сплав на основе платины 585 пробы
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0709473B1 (en) * 1994-10-24 1998-12-23 Ivoclar Ag Process of making metal castings
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
MXPA06008848A (es) 2004-02-04 2007-04-23 Karat Platinum Llc Aleacion de platino y metodo para la produccion de la misma.
CA2618216A1 (en) * 2005-08-03 2007-02-08 Allgemeine Gold-und Silberscheideanstalt AG Platinum alloy and method of production thereof
EP1913168B1 (en) * 2005-08-03 2009-08-26 Allgemeine Gold- Und Silberscheideanstalt AG 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016101015U1 (de) 2016-02-26 2016-03-07 Egf - Eduard G. Fidel Gmbh Schmuckkörper
DE202018104717U1 (de) 2018-08-16 2018-08-30 Egf - Eduard G. Fidel Gmbh Schmuckkörper
DE202022002098U1 (de) 2022-09-21 2024-01-16 Bauer-Walser AG Platinlegierung, insbesondere Platin-Schmucklegierung

Also Published As

Publication number Publication date
WO2010115839A1 (de) 2010-10-14
DE202009013202U1 (de) 2009-12-24
EP2260116A1 (de) 2010-12-15
DE102009017398A1 (de) 2010-10-14

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