WO2015097350A1 - Method for mass production of a blackened silver alloy including sulphur - Google Patents
Method for mass production of a blackened silver alloy including sulphur Download PDFInfo
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- WO2015097350A1 WO2015097350A1 PCT/FR2013/000371 FR2013000371W WO2015097350A1 WO 2015097350 A1 WO2015097350 A1 WO 2015097350A1 FR 2013000371 W FR2013000371 W FR 2013000371W WO 2015097350 A1 WO2015097350 A1 WO 2015097350A1
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- WIPO (PCT)
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- silver alloy
- son
- sulfur
- alloy
- wire
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- 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
- C22C5/06—Alloys based on silver
Definitions
- the object of the present invention of this new patent for manufacturing a blackened silver alloy in the mass is to make the manufacturing process more efficient with respect to the quality and microstructure of the final product.
- this object is obtained by a process which is characterized by the fact that a silver alloy is heated at a temperature between 400 and 700 degrees Celsius, before bringing it into contact with the sulfurous vapors.
- the silver alloy is used in the form of round or square thick wire. contacting the son with sulfurous vapors is a function of the dimention of the son so as to ensure complete blackening son in their masses.
- the dimensions of the silver alloy wires which can be used according to the present invention are between 1 millimeter to a few millimeters. Indeed, there is no lower limit as regards the size of the wires used in this process except for the ease of processing, and the upper limit of a few millimeters is also a floating limit because the diffusion between the sulfur and silver alloy undergoes a certain function over time, and a high thickness of the base material only results in an extension of the exposure time. In this way, the upper limit or the dimension of the wires is dictated by optimization reasons and not by technical constraints.
- a silver alloy is shaped into wires with a width of between 1 and a few meters, the silver alloy can be heated by conduction or radiation.
- the silver alloy is heated to a temperature between 400 ° C. and 700 ° C. and once this temperature has been obtained, the enclosure in which the wires are located is filled with sulphurous vapors which will remain in contact with the wires for a period of time.
- variable duration depending on the width of the wire and the temperature of the enclosure to obtain optimal diffusion of sulfur in the silver alloy, and the time of the exposure is chosen so that the blackening, that is to say that is, the reaction of the sulfur with the crystals of the structure of the silver alloy is uniformly done through the whole section of the wires, the heating of the silver alloy before its exposure to sulfur allows a faster, more complete and more consistent delivery.
- the optimal duration is between 1 minute and 10 minutes depending on the diameter of the threads, too short a time leaves the center of the threads not transformed, a too long duration deteriorates the quality of the material with a granite surface, and sometimes with interface between two structures.
- this new patent makes it possible to obtain a greater solidity of the material for this it will cut into small pieces of silver son already treated and black in the mass, then put these pieces of son in a crucible with the contents of a teaspoon of sulfur flower is about ⁇ O sulfur j to 150 grams of son pieces, then heating the crucible to melt the pieces of son will absorb a part of the sulfur and then to finish it will sink this molten alloy into an ingot mold and the material obtained will be stronger and may be used for the manufacture of objects of all shapes and uses such as jewelery or other professions to form objects using any technique of mechanical deformation hot and sometimes cold, this material may be melted for molding any object.
- Silver alloy wires with a diameter of one to a few millimeters are introduced into a treatment vessel and the best solution will be to suspend them and then they will be heated by radiation at a temperature above 400 degrees Celsius.
- the heating is interrupted, and the blackened silver alloy wires must cool in the still hot atmosphere for a good ten minutes before being removed from the enclosure, in order to avoid any deterioration of their surface.
- the wires removed from the enclosure consist of blackened silver alloy to the center, the surface of the son must be shiny and no deposit should be observed on the surface of these son.
- the wires are melted and cast in a mold of any shape, the surface of the object cast after demolding is clean and requires no treatment except for a slight sandblasting if the surface of the object was slightly oxidized.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The present invention relates to the production of a silver alloy blackened in the body used, for example, in jewellery. The method for manufacturing said material comprises placing the alloy in contact with the sulphur in the form of sulphurous vapour. The wires used for said method have a thickness of 1 millimetre to several millimetres and the duration of the silver alloy exposure to the sulphurous vapour atmosphere is calculated on the basis of said thickness. The silver alloy is blackened by diffusing the sulphur in the silver and, according to the present invention, the silver alloy is heated to a predetermined temperature in order to optimise said diffusion and the microstructure of the material obtained.
Description
PROCEDE DE PRODUCTION EN MASSE D'UN PROCESS FOR THE PRODUCTION IN MASS OF A
ALLIAGE D'ARGENT NOIRCI COMPRENANT DE SOUFRE BLACK SILVER ALLOY COMPRISING SULFUR
Le but de la présente invention de ce nouveau brevet de fabrication d'un alliage d'argent noirci dans la masse est de rendre le procédé de fabrication plus efficace en ce qui concerne la qualité et la microstructure du produit final. Selon la présente invention, ce but est obtenu par un procédé qui est caractérisé par le fait que l'on chauffe un alliage d'argent à une température comprise entre 400 et 700 degrés Celsius, avant de le mettre en contact avec les vapeurs sulfureuses. The object of the present invention of this new patent for manufacturing a blackened silver alloy in the mass is to make the manufacturing process more efficient with respect to the quality and microstructure of the final product. According to the present invention, this object is obtained by a process which is characterized by the fact that a silver alloy is heated at a temperature between 400 and 700 degrees Celsius, before bringing it into contact with the sulfurous vapors.
A in d'obtenir une plus grande solidité et plus efficace en ce qui concerne la micro structure, il faut pour cela augmenter la température et la duré d'exposition de l'alliage aux vapeurs sulfureuses. In order to obtain a greater strength and more effective with regard to the micro structure, it is necessary to increase the temperature and the duration of exposure of the alloy to the sulfurous vapors.
Afin d'obtenir une meilleur résilience il faut ajouter dans l'alliage une petite quantité de nobium.
Pour rendre le procédé plus efficace selon une forme de réalisation de la présente invention l'alliage d'argent est utilisé en forme de fils de section ronde ou carrée d'épaisseur
la mise en contact des fils avec les vapeurs sulfureuses est fonction de la dimention des fils de sorte à assurer le noircissement complet des fils dans leurs masses. In order to obtain a better resilience, a small amount of nobium must be added to the alloy. To make the process more efficient according to one embodiment of the present invention, the silver alloy is used in the form of round or square thick wire. contacting the son with sulfurous vapors is a function of the dimention of the son so as to ensure complete blackening son in their masses.
Les dimensions des fils en alliage d'argent qui peuvent être utilisées selon la présente invention se situent entre 1 rnillimètre à quelques millimètres. En effet il n'existe pas une limite inférieure en ce qui concerne la dimension des fils mis en œuvre de ce procédé sauf en ce qui concerne la facilité du traitement, et la limite supérieure de quelques millimètres est aussi une limite flottante car Finterdiffusion entre le soufre et l'alliage d'argent subit une certaine fonction dans le temps, et une épaisseur élevée du matériau de base entraîne uniquement une extension de la durée d'exposition. De cette façon, la limite supérieure ou la dimension des fils est dictée par des raisons d'optimisation et non pas des contraintes techniques. The dimensions of the silver alloy wires which can be used according to the present invention are between 1 millimeter to a few millimeters. Indeed, there is no lower limit as regards the size of the wires used in this process except for the ease of processing, and the upper limit of a few millimeters is also a floating limit because the diffusion between the sulfur and silver alloy undergoes a certain function over time, and a high thickness of the base material only results in an extension of the exposure time. In this way, the upper limit or the dimension of the wires is dictated by optimization reasons and not by technical constraints.
Nous allons décrire maintenant plus en détail le procédé de fabrication de l'alliage d'argent noirci dans la masse selon la présente invention. Un alliage d'argent est mis en forme de fils d'une largeur comprise entre 1 et quelques rmll mètres, l'alliage d'argent peut être chauffé par conduction ou radiation. L'alliage d'argent est chauffé à une température comprise entre 400°c et 700°c et une fois cette température obtenue, l'enceinte dans laquelle se trouve les fils est remplie de vapeurs sulfureuses qui resteront en contact avec les fils pour une durée variable selon la largeur des fil et selon la température de l'enceinte afin d'obtenir une diffusion optimale du soufre dans l'alliage d'argent, et le temps de Fexposïtion est choisi de façon telle que le noircissement, c'est-à-dire la réaction du soufre avec les cristaux de la structure de l'alliage d'argent se fasse de façon uniforme à travers la section entière des fils, le fait de chauffer l'alliage d'argent avant son exposition au soufre permet une diffusion plus rapide, plus complète et plus uniforme. La durée optimale se situe entre 1 minute et 10 minutes en fonction du diamètre des fils, Une durée trop courte laisse le centre des fils non transformé, une durée trop longue détériore la qualité du matériau avec une surface graniteuse, et quelquefois avec interface entre deux structures. We will now describe in more detail the method of manufacturing the black-silver alloy in the mass according to the present invention. A silver alloy is shaped into wires with a width of between 1 and a few meters, the silver alloy can be heated by conduction or radiation. The silver alloy is heated to a temperature between 400 ° C. and 700 ° C. and once this temperature has been obtained, the enclosure in which the wires are located is filled with sulphurous vapors which will remain in contact with the wires for a period of time. variable duration depending on the width of the wire and the temperature of the enclosure to obtain optimal diffusion of sulfur in the silver alloy, and the time of the exposure is chosen so that the blackening, that is to say that is, the reaction of the sulfur with the crystals of the structure of the silver alloy is uniformly done through the whole section of the wires, the heating of the silver alloy before its exposure to sulfur allows a faster, more complete and more consistent delivery. The optimal duration is between 1 minute and 10 minutes depending on the diameter of the threads, too short a time leaves the center of the threads not transformed, a too long duration deteriorates the quality of the material with a granite surface, and sometimes with interface between two structures.
Sous certaines conditions on pourrait utiliser directement ce matériau ainsi obtenu pour la fabrication d'objets de toutes formes, mais il serait souvent nécessaire que ce matériau sort plus solide, c'est pourquoi ce nouveau brevet permet d'obtenir une plus grande solidité du matériau, pour cela il faudra couper en petits morceaux les fils d'argent déjà traités et qui sont noirs dans la masse, ensuite de mettre ces morceaux de fils dans un creuset avec le contenu d'une cuillère a café de soufre fleur soit environ ^Ojde soufre pour 150 grammes de morceaux de fils, ensuite de chauffer le creuset pour fondre les morceaux de fils qui absorberont une parties du soufre puis pour terminer il faudra couler cet alliage en fusion dans une lingotière, ainsi le matériau obtenu sera plus solide et pourra être utilisé pour la fabrication d'objets de toutes formes et de tous usages tel que la bijouterie ou dans d'autre professions pour former des objets en utilisant toute technique de déformation mécanique à chaud et quelque fois à froid, ce matériau pourra être fondu pour le moulage d'objets quelconques.
Under certain conditions one could directly use this material thus obtained for the manufacture of objects of all forms, but it would often be necessary that this material leaves more solid, that is why this new patent makes it possible to obtain a greater solidity of the material for this it will cut into small pieces of silver son already treated and black in the mass, then put these pieces of son in a crucible with the contents of a teaspoon of sulfur flower is about ^ O sulfur j to 150 grams of son pieces, then heating the crucible to melt the pieces of son will absorb a part of the sulfur and then to finish it will sink this molten alloy into an ingot mold and the material obtained will be stronger and may be used for the manufacture of objects of all shapes and uses such as jewelery or other professions to form objects using any technique of mechanical deformation hot and sometimes cold, this material may be melted for molding any object.
EXEMPLE EXAMPLE
Des fils d'alliage d'argent d'un diamètre de un à quelques millimètre sont introduits dans un récipient de traitement et la meilleure solution sera de les suspendre puis ils seront chauffés par radiation à une température supérieure à 400 degrés Celsius. Silver alloy wires with a diameter of one to a few millimeters are introduced into a treatment vessel and the best solution will be to suspend them and then they will be heated by radiation at a temperature above 400 degrees Celsius.
Après avoir atteint cette température, du soufre est introduit dans l'enceinte, ainsi l'atmosphère entourant les fils en alliage d'argent sera saturée de vapeurs sulfureuses pour une durée moyen de 5 minutes. After reaching this temperature, sulfur is introduced into the chamber, so the atmosphere surrounding the silver alloy son will be saturated with sulfurous vapors for an average duration of 5 minutes.
Après cette exposition, le chauffage est interrompu, et les fils d'alliage d'argent noircis doivent refroidir dans l'ambiance encore chaude pendant une bonne dizaine de minutes avant d'être retirés de l'enceinte, afin, d'éviter toute détérioration de leur surface . After this exposure, the heating is interrupted, and the blackened silver alloy wires must cool in the still hot atmosphere for a good ten minutes before being removed from the enclosure, in order to avoid any deterioration of their surface.
Les fils retirés de l'enceinte sont constitués de l'alliage d'argent noirci jusqu'au centre, la surface des fils doit être brillante et aucun dépôt ne devra être observé à la surface de ces fils. Les fils sont fondus et coulés dans un moule de forme quelconque, la surface de l'objet coulé après démoulage est propre et ne nécessite aucun traitement à l'exception d'un légé sablage si la surface de l'objet était légèrement oxydée. The wires removed from the enclosure consist of blackened silver alloy to the center, the surface of the son must be shiny and no deposit should be observed on the surface of these son. The wires are melted and cast in a mold of any shape, the surface of the object cast after demolding is clean and requires no treatment except for a slight sandblasting if the surface of the object was slightly oxidized.
L'invention a été décrite au moyen d'un exemple de réalisation mais elle n'est pas limitée à cet exemple. Au contraire, elle est susceptible de modifications et de variantes qui The invention has been described by means of an exemplary embodiment but it is not limited to this example. On the contrary, it is susceptible to modifications and variants that
apparaîtront à l'homme de l'art, notament en ce qui concerne la forme du matériau de départ autre que des fils, par exemple des feuilles ou des bandes d'alliage d'argent mais également en ce qui concerne les températures et les durées d'exposition de l'alliage d'argent au soufre.
will be apparent to those skilled in the art, in particular as regards the shape of the starting material other than son, for example sheets or strips of silver alloy but also with regard to temperatures and times of exposure of silver alloy to sulfur.
Claims
REVENDICATIONS
1 - Nouveau procédé permettant d'obtenir une amélioration de l'alliage d'argent noirci dans la masse caractérisé en ce que le récipient dans lequel se trouve suspendu les fils d'alliage d'argent soit chauffé à une température de 400 degrés Celsius minimum et jusqu'à 700 degrés Celsius, afin que le pourcentage de soufre dans l'alliage d'argent soit le plus important possible. 1 - New process for obtaining an improvement of the blackened silver alloy in the mass, characterized in that the container in which the silver alloy wires are suspended is heated to a temperature of at least 400 degrees Celsius and up to 700 degrees Celsius so that the percentage of sulfur in the silver alloy is as large as possible.
2 - Procédé selon les revendications 1, caractérisé en ce que l'alliage d'argent est utilisé en forme de fil de largeur variable et que la durée de la mise en contact dudit fil avec la vapeur sulfureuse est fonction de la dimension du fil de sorte à assurer le noircissement du fil dans sa masse. 2 - Process according to claims 1, characterized in that the silver alloy is used in the form of wire of variable width and that the duration of contacting said wire with the sulfurous vapor is a function of the dimension of the wire of so as to ensure the blackening of the wire in its mass.
3 - Procédé selon les revendications 1 ou 2, caractérisé en ce que le diamètre des fils soit compris entre 1 millimètre et quelques millimètres, et que la durée de la mise en contact, des fils avec la vapeur sulfureuse soit en fonction de leurs dimensions. 3 - Process according to claims 1 or 2, characterized in that the diameter of the son is between 1 millimeter and a few millimeters, and that the duration of contacting the son with the sulfurous vapor is depending on their dimensions.
4 - Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la durée d'exposition de l'alliage d'argent aux vapeurs de soufre sera de 1 à 10 minutes pour un matériel de base de dimension comprise entre 1 mm et quelques mm 4 - Process according to any one of the preceding claims, characterized in that the exposure time of the silver alloy to sulfur vapors will be from 1 to 10 minutes for a basic material of dimension between 1 mm and some mm
5 - Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'alliage d'argent est chauffé par radiation ou conduction. 5 - Process according to any one of the preceding claims, characterized in that the silver alloy is heated by radiation or conduction.
6 - Procédé dans lequel on ajoute une petite quantité de niobium dans l'alliage d'argent afin d'améliorer la résilience de l'alliage. 6 - Process in which a small amount of niobium is added to the silver alloy to improve the resilience of the alloy.
7 - Procédé selon lequel il faut couper en petits morceaux les fils obtenus par la diffusion du soufre dans l'alliage d'argent, afin de les mettre dans un creuset avec environ 2,50 grammes de soufre fleur pour 150 grammes de fils, puis de chauffer le creuset pour fondre les fils qui absorberont une partie du soufre, ensuite pour terminer de couler l'alliage en fusion dans une lingotière.
7 - A method according to which it is necessary to cut into small pieces the son obtained by the diffusion of sulfur in the silver alloy, to put them in a crucible with about 2.50 grams of sulfur flower for 150 grams of son, then to heat the crucible to melt the son that will absorb a portion of the sulfur, then to finish casting the molten alloy in a mold.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13824599.8A EP3087209A1 (en) | 2013-12-27 | 2013-12-27 | Method for mass production of a blackened silver alloy including sulphur |
| PCT/FR2013/000371 WO2015097350A1 (en) | 2013-12-27 | 2013-12-27 | Method for mass production of a blackened silver alloy including sulphur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2013/000371 WO2015097350A1 (en) | 2013-12-27 | 2013-12-27 | Method for mass production of a blackened silver alloy including sulphur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015097350A1 true WO2015097350A1 (en) | 2015-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/000371 WO2015097350A1 (en) | 2013-12-27 | 2013-12-27 | Method for mass production of a blackened silver alloy including sulphur |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3087209A1 (en) |
| WO (1) | WO2015097350A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2981343A1 (en) * | 2011-10-12 | 2013-04-19 | Lucien Vachey | Improving blackened silver alloy mass for making a jewelry, comprises suspending silver alloy yarn in a container, and heating at a specified temperature |
-
2013
- 2013-12-27 EP EP13824599.8A patent/EP3087209A1/en not_active Withdrawn
- 2013-12-27 WO PCT/FR2013/000371 patent/WO2015097350A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2981343A1 (en) * | 2011-10-12 | 2013-04-19 | Lucien Vachey | Improving blackened silver alloy mass for making a jewelry, comprises suspending silver alloy yarn in a container, and heating at a specified temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3087209A1 (en) | 2016-11-02 |
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