EP3315620A1 - Non-magnetic precious alloy for clockmaking applications - Google Patents

Non-magnetic precious alloy for clockmaking applications Download PDF

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Publication number
EP3315620A1
EP3315620A1 EP17188401.8A EP17188401A EP3315620A1 EP 3315620 A1 EP3315620 A1 EP 3315620A1 EP 17188401 A EP17188401 A EP 17188401A EP 3315620 A1 EP3315620 A1 EP 3315620A1
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EP
European Patent Office
Prior art keywords
total
parts per
per thousand
mass
alloy
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EP17188401.8A
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German (de)
French (fr)
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EP3315620B1 (en
Inventor
Denis Vincent
Christian Charbon
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Nivarox Far SA
Nivarox SA
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Nivarox Far SA
Nivarox SA
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Publication of EP3315620A1 publication Critical patent/EP3315620A1/en
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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
    • C22C5/02—Alloys based on gold
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles

Definitions

  • the invention relates to a precious alloy having at least 540 ⁇ by weight of gold.
  • the invention further relates to a non-magnetic timepiece component made of this precious alloy.
  • the invention relates to the field of structural components or timepiece cladding in 9-carat gold alloy and more, in particular of at least 13 carats, in particular 14 carats.
  • a characteristic common to most precious alloys used in watchmaking is their high density, greater than 10 g / cm 3 . Indeed, the two main precious metals used in watchmaking, gold and platinum, have respective densities of approximately 19.3 and 21.5 g / cm 3 . This has the consequence of making their alloys relatively heavy.
  • Precious alloys are often made to comply with the legal title, and include components of alloys to bring particular qualities of coloring, stability of color over time, surface hardness, or other special qualities.
  • the document JP H09 184033A in the name of TANAKA Precious Metal Inc. discloses a white gold alloy comprising, by mass, 40 to 70% gold, 10 to 20% copper, 5 to 15% silver, and palladium balance.
  • the silver can be replaced by 0.5 to 5% of at least one of Zn, IN, Sn, Rh, Ru, Ir and Pt. Platinum can be added to the alloy.
  • the document CH709923A2 in the name of NIVAROX describes a nickel-white or gray-nickel alloy comprising, expressed by mass, 29.15 to 54.2% of gold, between 1% and 15% of zinc, between 25 and 42% of copper and between 14 and 32% nickel, and optionally at most 5% of at least one of the elements selected from Ir, In, Ti, Si, Ga, Re.
  • the invention proposes to develop precious alloys comprising gold, which are suitable for making non-magnetic components. This problem is important in watches designed to operate normally even in the vicinity of high magnetic fields, especially greater than 15000 Gauss, that is to say 1.5 Tesla.
  • the invention relates to a precious alloy according to claim 1.
  • the invention also relates to a non-magnetic watchmaking component, the constituent material of which is such an alloy.
  • the invention also relates to a process for producing a wire made of such a precious alloy, intended to constitute the raw material for producing such components.
  • figure 1 is a block diagram showing the steps of the process for producing a precious alloy wire, according to the invention.
  • the invention proposes to eliminate it to obtain non-magnetic components.
  • the alloy must have insensitivity to magnetic fields, and must therefore contain no iron, nickel or cobalt.
  • the invention consists in the selection and use, for non-magnetic horological applications, of an alloy having the best compromise between all these constraints, which is described below.
  • the invention thus relates to a precious alloy for horological applications comprising, in mass, parts per thousand of the total, 540 to 630 gold, 150 to 220 palladium, 100 to 265 silver, strictly more than 150 and up to 265 copper, 0.0 to 0.2 iridium, 0.0 to 4.0 zinc, and a supplement comprising iron and / or nickel and / or cobalt.
  • the mass proportion of the total of gold, palladium, silver, copper, iridium and zinc is greater than 999,900 parts per thousand of the total, the mass proportion of said complement is less than 0.100 parts per thousand of the total, the density of the alloy is between 13.5 and 14.5 g / cm 3 , and the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and the mass proportion of the iron is less than 0.005 parts per thousand of the total, and the mass proportion of nickel is less than 0.005 parts per thousand of the total.
  • the alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 270.
  • the complement comprises only iron and / or nickel and / or cobalt.
  • the alloy comprises, by weight, in parts per thousand of the total, from 100 to 210 of silver.
  • the alloy comprises, in mass, in parts per thousand of the total, strictly more than 180 and up to 220 of palladium.
  • the alloy comprises, by weight, in parts per thousand of the total, from 150 to 160 palladium.
  • the alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 160.
  • the alloy comprises, in mass, in parts per thousand of the total, a total of silver and copper of between 250 and 270.
  • the alloy comprises, by weight, in parts per thousand of the total, a total of palladium and copper of between 300 and 320.
  • the alloy comprises, in mass, in parts per thousand of the total, strictly more than 1.0 and up to 4.0 of zinc.
  • the alloy comprises, in mass, in parts per thousand of the total, from 0.0 to 0.1 of zinc.
  • the alloy comprises, in mass, in parts per thousand of the total, strictly more than 150 and up to 160 of copper.
  • the alloy comprises, by weight, in parts per thousand of the total of 100 to 110 silver.
  • the alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 265 silver.
  • the alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 210 of silver.
  • the alloy comprises, in mass, in parts per thousand of the total, strictly more than 600 and up to 630 gold.
  • the alloy comprises, by weight, in parts per thousand of the total, 540 to 630 gold, 150 to 160 palladium, 100 to 110 silver, strictly more than 150 and up to 160 copper, 0.0 to 0.2 of iridium, 0.0 to 0.1 of zinc, and a complement comprising iron and / or nickel and / or cobalt.
  • the mass proportion of total gold, palladium, silver, copper, iridium, and zinc is greater than 999,900 parts per thousand of the total, the mass proportion of said complement is less than 0.100 parts per thousand of the total, the density of the alloy is between 14.0 and 14.5 g / cm 3 , and the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and the proportion Iron mass is less than 0.005 parts per thousand of the total, and the mass proportion of nickel is less than 0.005 parts per thousand of the total.
  • the mass proportion of this complement is less than 0.010 parts per thousand of the total, and the mass proportion of cobalt is less than 0.001 parts per thousand of the total.
  • the mass proportion of the complement is less than 0.010 parts per thousand of the total, and the mass proportion of iron is less than 0.001 parts per thousand of the total.
  • the mass proportion of the complement is less than 0.010 parts per thousand of the total, and the mass proportion of the nickel is less than 0.001 parts per thousand of the total.
  • the alloy is a gray gold alloy, where the mass proportion of gold is between 585 and 587 parts per thousand of the total, the mass proportion of palladium is between 155 and 156 parts per thousand of the total, the mass proportion of silver is between 103 and 104 parts per thousand of the total, and the mass proportion of copper is between 155 and 156 parts per thousand of the total. More particularly, the mass proportion of gold is between 585.8 and 586.2 parts per thousand of the total, the mass proportion of palladium is between 155.1 and 155.5 parts per thousand of the total, the mass proportion of silver is between 103.4 and 103.6 parts per thousand of the total, and the mass proportion of copper is between 155.1 and 155.3 parts per thousand of the total.
  • the invention also relates to a non-magnetic watchmaking component, the material that composes this component is a precious alloy according to the invention, in one of the compositions described above.
  • This component is designed for an environment under a magnetic field of 15000 Gauss, in which this component does not undergo significant movement, detrimental to the movement of the movement.
  • the deformation of the section is limited to a value of less than or equal to 13% per pass.
  • the number of said anneals is limited to three.
  • the number of stretching passes is limited to three.
  • the wire obtained by these stretching passes is straightened.
  • the profiled wire is cut to length after its complete elaboration.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

Alliage précieux pour applications horlogères comportant, en masse, en parties pour mille du total, de 540 à 630 d'or, de 150 à 220 de palladium, de 100 à 265 d'argent, plus de 150 à 265 de cuivre, de 0.0 à 0.2 d'iridium, de 0.0 à 4.0 de zinc, et un complément comportant du fer et/ou du nickel et/ou du cobalt, la proportion massique du total de l'or, du palladium, de l'argent, du cuivre, de l'iridium et du zinc, est supérieure à 999,900, la proportion massique du complément inférieure à 0.100, la masse volumique de l'alliage comprise entre 13.5 et 14.5 g/cm 3 , la proportion massique du cobalt est inférieure à 0.005, celle du fer inférieure à 0.005, et celle du nickel inférieure à 0.005, le total de cuivre et de zinc est compris entre 150 et 270. Composant amagnétique d'horlogerie réalisé dans cet alliage. Procédé d'élaboration d'un fil de cet alliage.Precious alloy for horological applications comprising, in mass, in parts per thousand of the total, from 540 to 630 gold, from 150 to 220 of palladium, from 100 to 265 of silver, over 150 to 265 of copper, of 0.0 at 0.2 iridium, 0.0 to 4.0 zinc, and a complement comprising iron and / or nickel and / or cobalt, the mass proportion of total gold, palladium, silver, copper , iridium and zinc, is greater than 999,900, the mass proportion of the complement less than 0.100, the density of the alloy between 13.5 and 14.5 g / cm 3, the mass proportion of cobalt is less than 0.005, that of iron less than 0.005, and that of nickel less than 0.005, the total of copper and zinc is between 150 and 270. Nonmagnetic clockwork component made in this alloy. Process for producing a wire of this alloy

Description

Domaine de l'inventionField of the invention

L'invention concerne un alliage précieux, comportant au moins 540 ‰ en masse d'or.The invention relates to a precious alloy having at least 540 ‰ by weight of gold.

L'invention concerne encore un composant d'horlogerie amagnétique réalisé dans cet alliage précieux.The invention further relates to a non-magnetic timepiece component made of this precious alloy.

L'invention concerne le domaine des composants de structure ou d'habillage d'horlogerie en alliage d'or de 9 carats et plus, notamment d'au moins 13 carats, en particulier de 14 carats.The invention relates to the field of structural components or timepiece cladding in 9-carat gold alloy and more, in particular of at least 13 carats, in particular 14 carats.

Arrière-plan de l'inventionBackground of the invention

Une caractéristique commune à la plupart des alliages précieux utilisés en horlogerie est leur masse volumique élevée, supérieure à 10 g/cm3. En effet, les deux principaux métaux précieux utilisés en horlogerie, l'or et le platine, ont des masses volumiques respectives d'environ 19.3 et 21.5 g/cm3. Ceci a pour conséquence de rendre leurs alliages relativement lourds.A characteristic common to most precious alloys used in watchmaking is their high density, greater than 10 g / cm 3 . Indeed, the two main precious metals used in watchmaking, gold and platinum, have respective densities of approximately 19.3 and 21.5 g / cm 3 . This has the consequence of making their alloys relatively heavy.

Souvent les alliages précieux sont fabriqués de façon à respecter le titre légal, et comportent des composants d'alliages propres à apporter des qualités particulières de coloration, de stabilité de la coloration dans le temps, de dureté superficielle, ou d'autres qualités particulières.Precious alloys are often made to comply with the legal title, and include components of alloys to bring particular qualities of coloring, stability of color over time, surface hardness, or other special qualities.

Un soin particulier dans la composition de ces alliages précieux concerne les éléments à plus forte teneur dans l'alliage, notamment l'or et les platinoïdes. En revanche la gestion des traces est la plupart du temps beaucoup moins précise que pour des alliages très techniques, où de très faibles proportions de certains composants d'alliage ont une influence très importante sur les performances de cet alliage.Particular care in the composition of these precious alloys concerns the elements with higher content in the alloy, especially gold and platinoids. On the other hand the management of the traces is mostly much less precise than for very technical alloys, where very small proportions of certain alloying components have a very important influence on the performances of this alloy.

On remarque de ce fait que certains composants réalisés en alliages précieux issus du négoce présentent un comportement nuisible dans certaines circonstances, en particulier au voisinage d'un champ magnétique.It should be noted that certain components made of valuable alloys from trading show harmful behavior in certain circumstances, particularly in the vicinity of a magnetic field.

Le document JP H09 184033A au nom de TANAKA Precious Metal Inc. décrit un alliage d'or blanc comportant, en masse, 40 à 70% d'or, 10 à 20% de cuivre, 5 à 15% d'argent, et la balance en palladium. Dans une variante, l'argent peut être remplacé par 0.5 à 5% d'au moins un élément parmi Zn, IN, Sn, Rh, Ru, Ir et Pt. Du platine peut encore être rajouté à l'alliage.The document JP H09 184033A in the name of TANAKA Precious Metal Inc. discloses a white gold alloy comprising, by mass, 40 to 70% gold, 10 to 20% copper, 5 to 15% silver, and palladium balance. In a variant, the silver can be replaced by 0.5 to 5% of at least one of Zn, IN, Sn, Rh, Ru, Ir and Pt. Platinum can be added to the alloy.

Le document CH709923A2 au nom de NIVAROX décrit un alliage d'or blanc ou gris au nickel comprenant, exprimé en masse, de 29,15 à 54,2% d'or, entre 1% et 15% de zinc, entre 25 et 42% de cuivre et entre 14 et 32% de nickel, et éventuellement au plus 5% d'au moins un des éléments choisi parmi Ir, In, Ti, Si, Ga, Re.The document CH709923A2 in the name of NIVAROX describes a nickel-white or gray-nickel alloy comprising, expressed by mass, 29.15 to 54.2% of gold, between 1% and 15% of zinc, between 25 and 42% of copper and between 14 and 32% nickel, and optionally at most 5% of at least one of the elements selected from Ir, In, Ti, Si, Ga, Re.

Résumé de l'inventionSummary of the invention

L'invention se propose de développer des alliages précieux comportant de l'or, qui soient aptes à la confection de composants amagnétiques. Cette problématique est importante dans des montres conçues pour fonctionner normalement même au voisinage de champs magnétiques élevés, notamment supérieures à 15000 Gauss, c'est-à-dire 1.5 Tesla.The invention proposes to develop precious alloys comprising gold, which are suitable for making non-magnetic components. This problem is important in watches designed to operate normally even in the vicinity of high magnetic fields, especially greater than 15000 Gauss, that is to say 1.5 Tesla.

A cet effet, l'invention concerne un alliage précieux selon la revendication 1.For this purpose, the invention relates to a precious alloy according to claim 1.

L'invention concerne encore un composant amagnétique d'horlogerie, dont le matériau constitutif est un tel alliage.The invention also relates to a non-magnetic watchmaking component, the constituent material of which is such an alloy.

L'invention concerne encore un procédé d'élaboration d'un fil en un tel alliage précieux, prévu pour constituer la matière première pour la réalisation de tels composants.The invention also relates to a process for producing a wire made of such a precious alloy, intended to constitute the raw material for producing such components.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où la figure 1 est un schéma-blocs représentant les étapes du procédé d'élaboration d'un fil en alliage précieux, selon l'invention.Other features and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the appended drawings, in which the figure 1 is a block diagram showing the steps of the process for producing a precious alloy wire, according to the invention.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

Malgré l'intérêt bien connu du cobalt dans un alliage pour améliorer les propriétés mécaniques et affiner le grain de l'alliage, l'invention se propose de l'éliminer pour l'obtention de composants amagnétiques.Despite the well-known interest of cobalt in an alloy to improve the mechanical properties and refine the grain of the alloy, the invention proposes to eliminate it to obtain non-magnetic components.

En effet, pour des applications horlogères, un alliage doit obéir à des caractéristiques qui peuvent sembler contradictoires, et la définition d'un alliage convenable résulte d'une longue recherche de compromis dans sa composition.Indeed, for watch applications, an alloy must obey characteristics that may seem contradictory, and the definition of a suitable alloy results from a long search for compromise in its composition.

Dans le cas présent, l'alliage doit présenter une insensibilité aux champs magnétiques, et ne doit donc contenir ni fer, ni nickel, ni cobalt.In this case, the alloy must have insensitivity to magnetic fields, and must therefore contain no iron, nickel or cobalt.

Il est en outre recherché l'obtention de tout ou partie des caractéristiques suivantes :

  • une couleur grise, résistant au ternissement et à l'oxydation, ce qui amène à l'incorporation de palladium et/ou d'argent. Le palladium apporte une bonne tenue au ternissement, mais son coût élevé oblige à minimiser sa teneur au niveau juste nécessaire ;
  • des caractéristiques mécaniques élevées (> 250 HV), ce qui conduit à incorporer du cuivre et/ou du palladium pour favoriser la formation de phases ordonnées et le durcissement structural, mais, là encore, la teneur de palladium est à maintenir au strict nécessaire ;
  • une bonne usinabilité, avec un alliage fortement écroui, ou à durcissement structural, pour limiter l'allongement et favoriser la rupture des copeaux ;
  • la possibilité de mise en forme sous forme de fils de petit diamètre (0.3 à 2.0 mm environ), ce qui incite au choix d'alliage monophasé présentant à l'état recuit une très grande ductilité.
It is furthermore sought to obtain all or some of the following characteristics:
  • a gray color, resistant to tarnishing and oxidation, which leads to the incorporation of palladium and / or silver. Palladium provides good resistance to tarnishing, but its high cost makes it necessary to minimize its content to the level just needed;
  • high mechanical characteristics (> 250 HV), which leads to the incorporation of copper and / or palladium to promote the formation of ordered phases and the structural hardening, but, again, the palladium content must be kept to the strict minimum;
  • good machinability, with a hardened alloy, or with a hardened structure, to limit elongation and promote chip breakage;
  • the possibility of shaping in the form of son of small diameter (0.3 to 2.0 mm approximately), which encourages the choice of single-phase alloy having in the annealed state a very high ductility.

L'invention consiste dans la sélection et l'utilisation, pour des applications horlogères amagnétiques, d'un alliage présentant le meilleur compromis entre toutes ces contraintes, qui est décrit ci-après.The invention consists in the selection and use, for non-magnetic horological applications, of an alloy having the best compromise between all these constraints, which is described below.

L'invention concerne ainsi un alliage précieux pour applications horlogères comportant, en masse, en parties pour mille du total, de 540 à 630 d'or, de 150 à 220 de palladium, de 100 à 265 d'argent, strictement plus de 150 et jusqu'à 265 de cuivre, de 0.0 à 0.2 d'iridium, de 0.0 à 4.0 de zinc, et un complément comportant du fer et/ou du nickel et/ou du cobalt.The invention thus relates to a precious alloy for horological applications comprising, in mass, parts per thousand of the total, 540 to 630 gold, 150 to 220 palladium, 100 to 265 silver, strictly more than 150 and up to 265 copper, 0.0 to 0.2 iridium, 0.0 to 4.0 zinc, and a supplement comprising iron and / or nickel and / or cobalt.

Selon l'invention, la proportion massique du total de l'or, du palladium, de l'argent, du cuivre, de l'iridium et du zinc, est supérieure à 999,900 parties pour mille du total, la proportion massique dudit complément est inférieure à 0.100 parties pour mille du total, la masse volumique de l'alliage est comprise entre 13.5 et 14.5 g/cm3, et la proportion massique du cobalt est inférieure à 0.005 parties pour mille du total, et la proportion massique du fer est inférieure à 0.005 parties pour mille du total, et la proportion massique du nickel est inférieure à 0.005 parties pour mille du total.According to the invention, the mass proportion of the total of gold, palladium, silver, copper, iridium and zinc is greater than 999,900 parts per thousand of the total, the mass proportion of said complement is less than 0.100 parts per thousand of the total, the density of the alloy is between 13.5 and 14.5 g / cm 3 , and the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and the mass proportion of the iron is less than 0.005 parts per thousand of the total, and the mass proportion of nickel is less than 0.005 parts per thousand of the total.

De façon avantageuse, l'alliage comporte, en masse, en parties pour mille du total, un total de cuivre et de zinc compris entre 150 et 270.Advantageously, the alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 270.

Plus particulièrement, le complément ne comporte que du fer et/ou du nickel et/ou du cobalt.More particularly, the complement comprises only iron and / or nickel and / or cobalt.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, de 100 à 210 d'argent.More particularly, the alloy comprises, by weight, in parts per thousand of the total, from 100 to 210 of silver.

Dans une variante, l'alliage comporte, en masse, en parties pour mille du total, strictement plus de 180 et jusqu'à 220 de palladium.In a variant, the alloy comprises, in mass, in parts per thousand of the total, strictly more than 180 and up to 220 of palladium.

Dans une autre variante, l'alliage comporte, en masse, en parties pour mille du total, de 150 à 160 de palladium.In another variant, the alloy comprises, by weight, in parts per thousand of the total, from 150 to 160 palladium.

Plus particulièrement encore, l'alliage comporte, en masse, en parties pour mille du total, un total de cuivre et de zinc compris entre 150 et 160.More particularly, the alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 160.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, un total d'argent et de cuivre compris entre 250 et 270.More particularly, the alloy comprises, in mass, in parts per thousand of the total, a total of silver and copper of between 250 and 270.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, un total de palladium et de cuivre compris entre 300 et 320.More particularly, the alloy comprises, by weight, in parts per thousand of the total, a total of palladium and copper of between 300 and 320.

Dans une variante, l'alliage comporte, en masse, en parties pour mille du total, strictement plus de 1.0 et jusqu'à 4,0 de zinc.In a variant, the alloy comprises, in mass, in parts per thousand of the total, strictly more than 1.0 and up to 4.0 of zinc.

Dans une autre variante, l'alliage comporte, en masse, en parties pour mille du total, de 0.0 à 0.1 de zinc.In another variant, the alloy comprises, in mass, in parts per thousand of the total, from 0.0 to 0.1 of zinc.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, strictement plus de 150 et jusqu'à 160 de cuivre.More particularly, the alloy comprises, in mass, in parts per thousand of the total, strictly more than 150 and up to 160 of copper.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total de 100 à 110 d'argent.More particularly, the alloy comprises, by weight, in parts per thousand of the total of 100 to 110 silver.

Dans une autre variante, l'alliage comporte, en masse, en parties pour mille du total strictement plus de 200 et jusqu'à 265 d'argent.In another variant, the alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 265 silver.

Plus particulièrement l'alliage comporte, en masse, en parties pour mille du total strictement plus de 200 et jusqu'à 210 d'argent.More particularly the alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 210 of silver.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, strictement plus de 600 et jusqu'à 630 d'or.More particularly, the alloy comprises, in mass, in parts per thousand of the total, strictly more than 600 and up to 630 gold.

Plus particulièrement, l'alliage comporte, en masse, en parties pour mille du total, de 540 à 630 d'or, de 150 à 160 de palladium, de 100 à 110 d'argent, strictement plus de 150 et jusqu'à 160 de cuivre, de 0.0 à 0.2 d'iridium, de 0.0 à 0.1 de zinc, et un complément comportant du fer et/ou du nickel et/ou du cobalt. Et la proportion massique du total de l'or, du palladium, de l'argent, du cuivre, de l'iridium, et du zinc est supérieure à 999,900 parties pour mille du total, la proportion massique dudit complément est inférieure à 0.100 parties pour mille du total, la masse volumique de l'alliage est comprise entre14.0 et 14.5 g/cm3, et la proportion massique du cobalt est inférieure à 0.005 parties pour mille du total, et la proportion massique du fer est inférieure à 0.005 parties pour mille du total, et la proportion massique du nickel est inférieure à 0.005 parties pour mille du total.More particularly, the alloy comprises, by weight, in parts per thousand of the total, 540 to 630 gold, 150 to 160 palladium, 100 to 110 silver, strictly more than 150 and up to 160 copper, 0.0 to 0.2 of iridium, 0.0 to 0.1 of zinc, and a complement comprising iron and / or nickel and / or cobalt. And the mass proportion of total gold, palladium, silver, copper, iridium, and zinc is greater than 999,900 parts per thousand of the total, the mass proportion of said complement is less than 0.100 parts per thousand of the total, the density of the alloy is between 14.0 and 14.5 g / cm 3 , and the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and the proportion Iron mass is less than 0.005 parts per thousand of the total, and the mass proportion of nickel is less than 0.005 parts per thousand of the total.

Plus particulièrement encore, dans une alternative, la proportion massique de ce complément est inférieure à 0.010 parties pour mille du total, et la proportion massique du cobalt est inférieure à 0.001 parties pour mille du total.More particularly, in an alternative, the mass proportion of this complement is less than 0.010 parts per thousand of the total, and the mass proportion of cobalt is less than 0.001 parts per thousand of the total.

Dans une autre alternative, la proportion massique du complément est inférieure à 0.010 parties pour mille du total, et la proportion massique du fer est inférieure à 0.001 parties pour mille du total.In another alternative, the mass proportion of the complement is less than 0.010 parts per thousand of the total, and the mass proportion of iron is less than 0.001 parts per thousand of the total.

Dans une autre alternative encore, la proportion massique du complément est inférieure à 0.010 parties pour mille du total, et la proportion massique du nickel est inférieure à 0.001 parties pour mille du total.In yet another alternative, the mass proportion of the complement is less than 0.010 parts per thousand of the total, and the mass proportion of the nickel is less than 0.001 parts per thousand of the total.

Plus particulièrement, l'alliage est un alliage d'or gris, où la proportion massique d'or est comprise entre 585 et 587 parties pour mille du total, la proportion massique de palladium est comprise entre 155 et 156 parties pour mille du total, la proportion massique d'argent est comprise entre 103 et 104 parties pour mille du total, et la proportion massique de cuivre est comprise entre 155 et 156 parties pour mille du total. Plus particulièrement encore, la proportion massique d'or est comprise entre 585.8 et 586.2 parties pour mille du total, la proportion massique de palladium est comprise entre 155.1 et 155.5 parties pour mille du total, la proportion massique d'argent est comprise entre 103.4 et 103.6 parties pour mille du total, et la proportion massique de cuivre est comprise entre 155.1 et 155.3 parties pour mille du total.More particularly, the alloy is a gray gold alloy, where the mass proportion of gold is between 585 and 587 parts per thousand of the total, the mass proportion of palladium is between 155 and 156 parts per thousand of the total, the mass proportion of silver is between 103 and 104 parts per thousand of the total, and the mass proportion of copper is between 155 and 156 parts per thousand of the total. More particularly, the mass proportion of gold is between 585.8 and 586.2 parts per thousand of the total, the mass proportion of palladium is between 155.1 and 155.5 parts per thousand of the total, the mass proportion of silver is between 103.4 and 103.6 parts per thousand of the total, and the mass proportion of copper is between 155.1 and 155.3 parts per thousand of the total.

L'invention concerne encore un composant amagnétique d'horlogerie, le matériau qui compose ce composant est un alliage précieux selon l'invention, dans l'une des compositions décrites ci-dessus. Ce composant est conçu pour un environnement sous un champ magnétique de 15000 Gauss, dans lequel ce composant ne subit pas de déplacement notable, préjudiciable à la marche du mouvement.The invention also relates to a non-magnetic watchmaking component, the material that composes this component is a precious alloy according to the invention, in one of the compositions described above. This component is designed for an environment under a magnetic field of 15000 Gauss, in which this component does not undergo significant movement, detrimental to the movement of the movement.

Ce composant amagnétique peut notamment être, non limitativement :

  • un élément inertiel d'oscillateur;
  • un balancier;
  • une cage de carrousel ou de tourbillon;
  • une ancre;
  • une vis réglante ;
  • une masselotte ou une visselotte de réglage d'inertie pour un balancier.
This non-magnetic component can notably be, without limitation:
  • an oscillator inertial element;
  • a pendulum;
  • a carousel or whirlpool cage;
  • an anchor;
  • a regulating screw;
  • a flyweight or an inertia adjustment screw for a balance.

L'invention concerne encore un procédé d'élaboration d'un fabrication d'un fil en alliage d'or de 13 à 15 carats coulé à un diamètre initial inférieur ou égal à 20 mm pour obtenir un fil d'un diamètre final, compris entre 0.3 et 2.0 mm, ce procédé met en oeuvre les étapes suivantes :

  • (10) on effectue une composition d'alliage précieux selon l'invention, qu'on met en solution ;
  • (11) on effectue la coulée d'une barre en coulée continue, dont la section est inscrite dans un diamètre de 8,0 à 20,0 mm ;
  • (12) on lamine au fil cette barre brute de coulée sous une section sensiblement rectangulaire, en tournant le produit intermédiaire obtenu d'un quart de tour avant chaque passe de laminage au fil, et on limite la déformation de la section à une valeur inférieure ou égale à 20% par passe,
  • (13) on mesure la déformation cumulée sur le produit intermédiaire par rapport à la section initiale de la barre brute de coulée,
  • (14) on cesse le laminage au fil quand la déformation cumulée de la section est comprise entre 60% et 75%, pour effectuer un recuit sur un produit intermédiaire de section intermédiaire, à une température comprise entre 600 °C et 650°C, pendant une durée de 20 à 30 minutes, sous atmosphère réductrice composée de N2 et H2, ledit recuit étant suivi d'un refroidissement sous gaz ou à l'eau ;
  • (15) on mesure la limité élastique du produit intermédiaire obtenu, et on cesse tout traitement thermique quand la limite élastique est supérieure ou égale à 950 MPa ;
  • (16) on reprend le laminage au fil avec les mêmes paramètres, on mesure la déformation cumulée sur le produit intermédiaire par rapport à la section intermédiaire, et on cesse le laminage au fil quand la déformation cumulée de la section, entre la section du produit intermédiaire et cette section intermédiaire, est comprise entre 60% et 75%, pour effectuer un recuit, et on réitère le processus de laminage au fil, de mesure, et de recuit jusqu'à l'atteinte de la section de produit intermédiaire souhaitée, et d'une limite élastique supérieure ou égale à 950 MPa ;
  • (17) on étire le produit intermédiaire pour ramener la section à un profil sensiblement circulaire et obtenir un fil profilé.
The invention also relates to a process for producing a 13 to 15 carat gold alloy wire cast to an initial diameter of less than or equal to 20 mm to obtain a wire of a final diameter, inclusive between 0.3 and 2.0 mm, this method implements the following steps:
  • (10) a precious alloy composition according to the invention is made and dissolved;
  • (11) pouring of a bar in continuous casting, whose section is inscribed in a diameter of 8.0 to 20.0 mm;
  • (12) this cast bar is rolled to the wire under a substantially rectangular section, rotating the intermediate product obtained a quarter turn before each rolling pass to the wire, and the deformation of the section is limited to a lower value or equal to 20% per pass,
  • (13) measuring the cumulative deformation on the intermediate product with respect to the initial section of the raw bar,
  • (14) the yarn rolling is stopped when the cumulative deformation of the section is between 60% and 75%, to anneal an intermediate intermediate product at a temperature between 600 ° C and 650 ° C, for a period of 20 to 30 minutes, under a reducing atmosphere composed of N 2 and H 2 , said annealing being followed by cooling under gas or with water;
  • (15) the elastic limit of the intermediate product obtained is measured, and any thermal treatment is ceased when the elastic limit is greater than or equal to 950 MPa;
  • (16) the yarn rolling is repeated with the same parameters, the accumulated deformation on the intermediate product is measured with respect to the intermediate section, and the yarn rolling is stopped when the cumulative deformation of the section, between the section of the product. intermediate and this intermediate section, is between 60% and 75%, to anneal, and the wire rolling, measuring, and annealing process is repeated until the desired intermediate product section is reached, and an elastic limit greater than or equal to 950 MPa;
  • (17) stretching the intermediate product to bring the section to a substantially circular profile and obtain a profiled wire.

Plus particulièrement, lors du laminage au fil, on limite la déformation de la section à une valeur inférieure ou égale à 13% par passe.More particularly, during wire rolling, the deformation of the section is limited to a value of less than or equal to 13% per pass.

Plus particulièrement, on limite à trois le nombre de dits recuits.More particularly, the number of said anneals is limited to three.

Plus particulièrement, on limite à trois le nombre de passes d'étirage.More particularly, the number of stretching passes is limited to three.

Plus particulièrement, on redresse le fil obtenu par ces passes d'étirage.More particularly, the wire obtained by these stretching passes is straightened.

Plus particulièrement, on coupe le fil profilé à longueur après son élaboration complète.More particularly, the profiled wire is cut to length after its complete elaboration.

Claims (28)

Alliage précieux pour applications horlogères dont les seuls constituants sont pris parmi un groupe comportant exclusivement l'or, le palladium, l'argent, le cuivre, l'iridium, le zinc, le fer, le nickel et le cobalt, ledit alliage comportant, en masse, en parties pour mille du total, de 540 à 630 d'or, de 150 à 220 de palladium, de 100 à 265 d'argent, strictement plus de 150 et jusqu'à 265 de cuivre, de 0.0 à 0.2 d'iridium, de 0.0 à 4.0 de zinc, et un complément à 1000 comportant du fer et/ou du nickel et/ou du cobalt, caractérisé en ce que la proportion massique du total de l'or, du palladium, de l'argent, du cuivre, de l'iridium et du zinc, est supérieure à 999,900 parties pour mille du total, en ce que la proportion massique dudit complément est inférieure à 0.100 parties pour mille du total, en ce que la masse volumique de l'alliage est comprise entre 13.5 et 14.5 g/cm3, et en ce que la proportion massique du cobalt est inférieure à 0.005 parties pour mille du total, et en ce que la proportion massique du fer est inférieure à 0.005 parties pour mille du total, et en ce que la proportion massique du nickel est inférieure à 0.005 parties pour mille du total. caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, un total de cuivre et de zinc compris entre 150 et 270.A precious alloy for watch applications whose only constituents are taken from a group consisting exclusively of gold, palladium, silver, copper, iridium, zinc, iron, nickel and cobalt, said alloy comprising, in mass, in parts per thousand of the total, of 540 to 630 of gold, of 150 to 220 of palladium, of 100 to 265 of silver, strictly more than 150 and up to 265 of copper, of 0.0 to 0.2 d iridium, from 0.0 to 4.0 zinc, and a complement to 1000 comprising iron and / or nickel and / or cobalt, characterized in that the mass proportion of total gold, palladium, silver , copper, iridium and zinc, is greater than 999,900 parts per thousand of the total, in that the mass proportion of said complement is less than 0.100 parts per thousand of the total, in that the density of the alloy is between 13.5 and 14.5 g / cm 3 , and in that the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and in that the mass proportion of the iron is less than 0.005 parts per thousand of the total, and in that the mass proportion of the nickel is less than 0.005 parts per thousand of the total. characterized in that said alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 270. Alliage précieux selon la revendication 1, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, de 100 à 210 d'argent.Precious alloy according to claim 1, characterized in that said alloy comprises, in mass, in parts per thousand of the total, from 100 to 210 silver. Alliage précieux selon la revendication 1 ou 2, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, strictement plus de 180 et jusqu'à 220 de palladium.Precious alloy according to claim 1 or 2, characterized in that said alloy comprises, in mass, in parts per thousand of the total, strictly more than 180 and up to 220 palladium. Alliage précieux selon la revendication 1 ou 2, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, de 150 à 160 de palladium.Precious alloy according to claim 1 or 2, characterized in that said alloy comprises, in mass, in parts per thousand of the total, from 150 to 160 of palladium. Alliage précieux selon l'une des revendications 1 à 4, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, un total de cuivre et de zinc compris entre 150 et 160.Precious alloy according to one of claims 1 to 4, characterized in that said alloy comprises, in mass, in parts per thousand of the total, a total of copper and zinc of between 150 and 160. Alliage précieux l'une des revendications 1 à 5, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, un total d'argent et de cuivre compris entre 250 et 270.Precious alloy one of claims 1 to 5, characterized in that said alloy comprises, in mass, in parts per thousand of the total, a total of silver and copper between 250 and 270. Alliage précieux l'une des revendications 1 à 6, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, un total de palladium et de cuivre compris entre 300 et 320.Precious alloy according to one of claims 1 to 6, characterized in that said alloy comprises, in mass, in parts per thousand of the total, a total of palladium and copper of between 300 and 320. Alliage précieux l'une des revendications 1 à 7, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, strictement plus de 1.0 et jusqu'à 4,0 de zinc.Precious alloy according to one of claims 1 to 7, characterized in that said alloy comprises, in mass, in parts per thousand of the total, strictly more than 1.0 and up to 4.0 of zinc. Alliage précieux l'une des revendications 1 à 7, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, de 0.0 à 0.1 de zinc.Precious alloy one of claims 1 to 7, characterized in that said alloy comprises, in mass, in parts per thousand of the total, from 0.0 to 0.1 of zinc. Alliage précieux l'une des revendications 1 à 9, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, strictement plus de 150 et jusqu'à 160 de cuivre.Precious alloy one of claims 1 to 9, characterized in that said alloy comprises, in mass, in parts per thousand of the total, strictly more than 150 and up to 160 of copper. Alliage précieux selon la revendication 2, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total de 100 à 110 d'argent.Precious alloy according to claim 2, characterized in that said alloy comprises, en masse, in parts per thousand of the total of 100 to 110 silver. Alliage précieux selon la revendication 1, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total strictement plus de 200 et jusqu'à 265 d'argent.Precious alloy according to claim 1, characterized in that said alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 265 silver. Alliage précieux selon la revendication 12, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total strictement plus de 200 et jusqu'à 210 d'argent.Precious alloy according to claim 12, characterized in that said alloy comprises, in mass, in parts per thousand of the total strictly more than 200 and up to 210 silver. Alliage précieux selon l'une des revendications 1 à 13, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, strictement plus de 600 et jusqu'à 630 d'or.Precious alloy according to one of claims 1 to 13, characterized in that said alloy comprises, in mass, in parts per thousand of the total, strictly more than 600 and up to 630 gold. Alliage précieux selon la revendication 1, caractérisé en ce que ledit alliage comporte, en masse, en parties pour mille du total, de 540 à 630 d'or, de 150 à 160 de palladium, de 100 à 110 d'argent, strictement plus de 150 et jusqu'à 160 de cuivre, de 0.0 à 0.2 d'iridium, de 0.0 à 0.1 de zinc, et un complément comportant du fer et/ou du nickel et/ou du cobalt, caractérisé en ce que la proportion massique du total de l'or, du palladium, de l'argent, du cuivre, de l'iridium, et du zinc est supérieure à 999,900 parties pour mille du total, en ce que la proportion massique dudit complément est inférieure à 0.100 parties pour mille du total, en ce que la masse volumique de l'alliage est comprise entre14.0 et 14.5 g/cm3, et en ce que la proportion massique du cobalt est inférieure à 0.005 parties pour mille du total, et en ce que la proportion massique du fer est inférieure à 0.005 parties pour mille du total, et en ce que la proportion massique du nickel est inférieure à 0.005 parties pour mille du total.Precious alloy according to claim 1, characterized in that said alloy comprises, in mass, parts per thousand of the total, 540 to 630 gold, 150 to 160 palladium, 100 to 110 silver, strictly from 150 and up to 160 of copper, from 0.0 to 0.2 of iridium, from 0.0 to 0.1 of zinc, and a complement comprising iron and / or nickel and / or cobalt, characterized in that the mass proportion of total gold, palladium, silver, copper, iridium, and zinc is greater than 999,900 parts per thousand of the total, in that the mass proportion of said complement is less than 0.100 parts per thousand of the total, in that the density of the alloy is between 14.0 and 14.5 g / cm 3 , and in that the mass proportion of cobalt is less than 0.005 parts per thousand of the total, and that the proportion iron mass is less than 0.005 parts per thousand of the total, and in that the mass proportion of nickel is ure at 0.005 parts per thousand of the total. Alliage précieux selon la revendication 15, caractérisé en ce que la proportion massique dudit complément est inférieure à 0.010 parties pour mille du total, et en ce que la proportion massique du cobalt est inférieure à 0.001 parties pour mille du total.Precious alloy according to claim 15, characterized in that the weight proportion of said addition is less than 0.010 parts per thousand of the total, and that the mass proportion of cobalt is less than 0.001 parts per thousand of the total. Alliage précieux selon la revendication 15 ou 16, caractérisé en ce que la proportion massique dudit complément est inférieure à 0.010 parties pour mille du total, et en ce que la proportion massique du fer est inférieure à 0.001 parties pour mille du total.Precious alloy according to claim 15 or 16, characterized in that the mass proportion of said complement is less than 0.010 parts per thousand of the total, and in that the mass proportion of the iron is less than 0.001 parts per thousand of the total. Alliage précieux selon l'une des revendications 15 à 17, caractérisé en ce que la proportion massique dudit complément est inférieure à 0.010 parties pour mille du total, et en ce que la proportion massique du nickel est inférieure à 0.001 parties pour mille du total.Precious alloy according to one of claims 15 to 17, characterized in that the mass proportion of said complement is less than 0.010 parts per thousand of the total, and in that the mass proportion of the nickel is less than 0.001 parts per thousand of the total. Alliage précieux selon l'une des revendications 15 à 18, caractérisé en ce que la proportion massique d'or est comprise entre 585 et 587 parties pour mille du total, la proportion massique de palladium est comprise entre 155 et 156 parties pour mille du total, la proportion massique d'argent est comprise entre 103 et 104 parties pour mille du total, et la proportion massique de cuivre est comprise entre 155 et 156 parties pour mille du total.Precious alloy according to one of claims 15 to 18, characterized in that the mass proportion of gold is between 585 and 587 parts per thousand of the total, the mass proportion of palladium is between 155 and 156 parts per thousand of the total , the mass proportion of silver is between 103 and 104 parts per thousand of the total, and the mass proportion of copper is between 155 and 156 parts per thousand of the total. Alliage précieux selon la revendication 19, caractérisé en ce que la proportion massique d'or est comprise entre 585.8 et 586.2 parties pour mille du total, la proportion massique de palladium est comprise entre 155.1 et 155.5 parties pour mille du total, la proportion massique d'argent est comprise entre 103.4 et 103.6 parties pour mille du total, et la proportion massique de cuivre est comprise entre 155.1 et 155.3 parties pour mille du total.Precious alloy according to claim 19, characterized in that the mass proportion of gold is between 585.8 and 586.2 parts per thousand of the total, the mass proportion of palladium is between 155.1 and 155.5 parts per thousand of the total, the mass proportion of silver is between 103.4 and 103.6 parts per thousand of the total, and the mass proportion of copper is between 155.1 and 155.3 parts per thousand of the total. Alliage précieux selon la revendication 1 ou 15, caractérisé en ce que ledit complément à 1000 ne comporte que du fer et/ou du nickel et/ou du cobalt.Precious alloy according to claim 1 or 15, characterized in that said 1000 complement comprises only iron and / or nickel and / or cobalt. Composant amagnétique d'horlogerie, caractérisé en ce que le matériau qui compose ledit composant est un alliage selon l'une des revendications 1 à 21.A non-magnetic watchmaking component, characterized in that the material that composes said component is an alloy according to one of claims 1 to 21. Composant amagnétique d'horlogerie selon la revendication 22, caractérisé en ce que ledit composant est un élément inertiel d'oscillateur.Non-magnetic timepiece component according to claim 22, characterized in that said component is an oscillator inertial element. Composant amagnétique d'horlogerie selon la revendication 22, caractérisé en ce que ledit composant est un balancier.Non-magnetic timepiece component according to claim 22, characterized in that said component is a pendulum. Composant amagnétique d'horlogerie selon la revendication 22, caractérisé en ce que ledit composant est une cage de carrousel ou de tourbillon.Non-magnetic timepiece component according to claim 22, characterized in that said component is a carousel or tourbillon cage. Composant amagnétique d'horlogerie selon la revendication 22, caractérisé en ce que ledit composant est une vis réglante.Non-magnetic timepiece component according to claim 22, characterized in that said component is a regulating screw. Composant amagnétique d'horlogerie selon la revendication 22, caractérisé en ce que ledit composant est une masselotte ou une visselotte de réglage d'inertie pour un balancier.A non-magnetic watchmaking component according to claim 22, characterized in that said component is a flyweight or an inertia adjustment jib for a balance. Procédé d'élaboration d'un fabrication d'un fil en alliage d'or de 13 à 15 carats coulé à un diamètre initial inférieur ou égal à 20 mm pour obtenir un fil d'un diamètre final, compris entre 0.3 et 2.0 mm, caractérisé en ce que: - (10) on effectue une composition d'alliage selon la revendication 1, qu'on met en solution ; - (11) on effectue la coulée d'une barre en coulée continue, dont la section est inscrite dans un diamètre de 8,0 à 20,0 mm ; - (12) on lamine au fil ladite barre brute de coulée sous une section sensiblement rectangulaire, en tournant le produit intermédiaire obtenu d'un quart de tour avant chaque passe de laminage au fil, et on limite la déformation de la section à une valeur inférieure ou égale à 20% par passe, - (13) on mesure la déformation cumulée sur le produit intermédiaire par rapport à la section initiale de ladite barre brute de coulée, - (14) on cesse le laminage au fil quand la déformation cumulée de la section est comprise entre 60% et 75%, pour effectuer un recuit sur un produit intermédiaire de section intermédiaire, à une température comprise entre 600 °C et 650°C, pendant une durée de 20 à 30 minutes, sous atmosphère réductrice composée de N2 et H2, ledit recuit étant suivi d'un refroidissement sous gaz ou à l'eau ; - (15) on mesure la limité élastique du produit intermédiaire obtenu, et on cesse tout traitement thermique quand ladite limite élastique est supérieure ou égale à 950 MPa; - (16) on reprend le laminage au fil avec les mêmes paramètres, on mesure la déformation cumulée sur le produit intermédiaire par rapport à ladite section intermédiaire, et on cesse le laminage au fil quand la déformation cumulée de la section, entre la section du produit intermédiaire et ladite section intermédiaire, est comprise entre 60% et 75%, pour effectuer un recuit, et on réitère le processus de laminage au fil, de mesure, et de recuit jusqu'à l'atteinte de la section de produit intermédiaire souhaitée, et d'une limite élastique supérieure ou égale à 950 MPa ; - (17) on étire le produit intermédiaire pour ramener la section à un profil sensiblement circulaire et obtenir un fil profilé. Process for producing a 13 to 15 carat gold alloy wire cast to an initial diameter of 20 mm or less to obtain a wire with a final diameter of between 0.3 and 2.0 mm, characterized in that - (10) an alloy composition is carried out according to claim 1, which is dissolved; - (11) the casting of a bar in continuous casting, whose section is inscribed in a diameter of 8.0 to 20.0 mm; - (12) said yarn bar is rolled under a substantially rectangular section, rotating the intermediate product obtained a quarter turn before each rolling pass to the wire, and the deformation of the section is limited to a value less than or equal to 20% per pass, (13) measuring the cumulative deformation on the intermediate product with respect to the initial section of said raw bar, - (14) the yarn rolling is stopped when the cumulative deformation of the section is between 60% and 75%, to anneal an intermediate intermediate product at a temperature between 600 ° C and 650 ° C for a period of 20 to 30 minutes, under a reducing atmosphere composed of N 2 and H 2 , said annealing being followed by cooling under gas or with water; (15) measuring the elastic limit of the intermediate product obtained, and ceasing any heat treatment when said elastic limit is greater than or equal to 950 MPa; - (16) the yarn rolling is repeated with the same parameters, the accumulated deformation on the intermediate product is measured with respect to said intermediate section, and the yarn rolling is stopped when the cumulative deformation of the section, between the section of the intermediate product and said intermediate section, is between 60% and 75%, to anneal, and the yarn rolling, measuring, and annealing process is repeated until the desired intermediate product section is reached , and an elastic limit greater than or equal to 950 MPa; - (17) stretching the intermediate product to bring the section to a substantially circular profile and obtain a profiled wire.
EP17188401.8A 2016-10-25 2017-08-29 Non-magnetic precious alloy for clockmaking applications Active EP3315620B1 (en)

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EP3339455B1 (en) * 2016-12-20 2020-02-05 Montres Breguet S.A. Grey-gold alloy
EP3594756B1 (en) * 2018-07-10 2021-05-12 Blancpain SA Timepiece component with arboured portion made of non-magnetic alloy
JP6811466B1 (en) * 2019-09-26 2021-01-13 田中貴金属工業株式会社 Medical Au-Pt-Pd alloy
EP3800511B1 (en) * 2019-10-02 2022-05-18 Nivarox-FAR S.A. Pivoting shaft for a regulating organ
CN115896527B (en) * 2022-12-16 2024-05-03 深圳市华悦珠宝科技有限公司 16K gold, manufacturing method of spring, spring and jewelry

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US5919320A (en) * 1997-11-17 1999-07-06 Leach & Garner Company Nickel-free white gold alloy with reversible hardness characteristics
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CH709923A2 (en) * 2014-07-25 2016-01-29 Nivarox Sa gold alloy.

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JP2018070996A (en) 2018-05-10
HK1254233A1 (en) 2019-07-12
CN107974570A (en) 2018-05-01
US20180112292A1 (en) 2018-04-26
EP3315620B1 (en) 2020-06-24

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