EP3587626A1 - Decorative part made by incrustation - Google Patents
Decorative part made by incrustation Download PDFInfo
- Publication number
- EP3587626A1 EP3587626A1 EP18180563.1A EP18180563A EP3587626A1 EP 3587626 A1 EP3587626 A1 EP 3587626A1 EP 18180563 A EP18180563 A EP 18180563A EP 3587626 A1 EP3587626 A1 EP 3587626A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- recess
- piece
- aluminum alloy
- aesthetic element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 25
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000007731 hot pressing Methods 0.000 claims abstract description 8
- 238000005034 decoration Methods 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims 3
- 229910045601 alloy Inorganic materials 0.000 claims 2
- 239000000956 alloy Substances 0.000 claims 2
- 238000011282 treatment Methods 0.000 description 13
- 229910001092 metal group alloy Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000002048 anodisation reaction Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000005300 metallic glass Substances 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005323 electroforming Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- 229910000952 Be alloy Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- 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
- G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
- G04B45/0076—Decoration of the case and of parts thereof, e.g. as a method of manufacture thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium 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
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/18—Graduations on the crystal or glass, on the bezel, or on the rim
-
- 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
- G04B37/225—Non-metallic cases
- G04B37/226—Non-metallic cases coated with a metallic layer
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
- A44C27/001—Materials for manufacturing jewellery
- A44C27/005—Coating layers for jewellery
- A44C27/007—Non-metallic coatings
Definitions
- the present invention relates to a method of manufacturing a decorative piece comprising a step of inlaying by hot pressing of a crystalline metallic alloy in a support in particular ceramic and to the decorative piece resulting from the process.
- Another process described in the document EP 2,315,673 consists in pressing in the aesthetic elements in the recesses made in the support.
- This document describes more particularly a method of inlaying by hot pressing of an aesthetic element produced in amorphous metallic material within a ceramic support to form, for example, indices on a watch bezel.
- the use of an amorphous metal for the incrustation makes it possible to work under low stresses and temperatures without risk of weakening the material of the support.
- the lack of contrast between the amorphous metal and the ceramic support does not allow an optimal visual rendering.
- the method of manufacturing a decorative piece by inlaying an amorphous metal is relatively expensive because it requires adequate treatment to maintain the amorphous structure of the metal.
- the present invention aims to provide a method of manufacturing a decorative piece comprising a step of inlaying by pressing a crystalline metal alloy in one or more recesses formed in a support which is in particular in ceramic.
- the inlay of a crystalline metal aims to increase the contrast between the aesthetic element and its support and to reduce manufacturing costs.
- the choice of crystalline metal relates to an aluminum alloy which has the particular advantage of being deformable at low temperature compared to other crystalline metal alloys. The method according to the invention thus makes it possible to produce a decorative piece comprising one or more aesthetic elements in aluminum, which is difficult to achieve with other methods, whether by PVD deposition or by electroforming.
- the manufacturing process comprises, following the incrustation step and a possible mechanical rectification step, an electrochemical treatment aimed at modifying the surface condition of the esthetic elements encrusted for the purposes of protection and / or aesthetic purposes.
- This treatment can consist of a selective anodization of said elements with or without coloring.
- the support in particular ceramic, is not an electrical conductor, one or more of the recesses open onto one face of the decorative piece intended to be not visible in use.
- These recesses communicating with the non-visible face form as many contact points making it possible to bring the current to the aesthetic elements to be treated electrochemically. Thanks to these non-visible contact points, it is possible to bring current to fine and numerous decors such as on a tachymeter scale of a watch bezel.
- the present invention relates to a process for manufacturing a decorative piece by hot pressing, also called inlaying, of one or more aesthetic elements in a support provided with one or more recesses and to the decorative piece resulting from the process .
- the piece may in particular be a component for covering watchmaking such as a bezel, a dial, a case, a crown, a push-piece, a crystal, a bracelet element, etc.
- the part 1 is a watch bezel comprising an annular body forming the support 2 provided with recesses 4 formed in said support 2 to receive the aesthetic elements 3 forming the indices.
- the aesthetic element is made of a crystalline metal alloy and more precisely of a crystalline aluminum alloy.
- the support for its part, is preferably made of a material which is not very ductile. It can, for example, be a ceramic, sapphire, enamel, etc. Preferably, it is a ceramic and, more preferably, a zirconia.
- the part may consist of a zirconia watch bezel with indices made from an aluminum alloy. In particular, it may be alloy 7075 which comprises zinc up to ⁇ 6% by weight.
- the advantage of aluminum alloy is that it is malleable at low temperatures due to its low melting temperature of around 650 ° C.
- the support 2 comprises at least one recess 4 produced by laser engraving, by machining, etc.
- the recess 4 has on the surface 2a of the support 2 intended to be visible a shape 4a corresponding to the outline of the desired decoration.
- This recess 4 can be blind ( figure 2 ) or lead to an invisible side 2b of the support 2 ( figure 10 ).
- the entire volume of the recess 4 is filled with the aesthetic element 3 projecting or flush with the surface 2a of the support 2.
- the aesthetic element only partially fills the volume of the recess.
- the recess 4 has flanks 7 with a geometry suitable for optimal maintenance of the aesthetic element within the recess.
- the sides 7 may be substantially perpendicular to the visible surface 2a of the support 2 with the aesthetic element maintained by friction within the recess.
- the sides are at least partially inclined with a narrowing in the direction of the visible surface preventing the displacement of the aesthetic element outside the recess.
- the sides 7, whether inclined or not are pierced with housings 5 which, after filling with the aesthetic element, form a stop which, like the inclined walls, prevents the aesthetic element from moving.
- protuberances 6 can be arranged in the recess 4 to ensure a similar role of means for holding the aesthetic element.
- the aesthetic elements are encrusted by hot pressing in the recesses of the support at a temperature between the solidus temperature and the liquidus temperature of the aluminum alloy constituting the aesthetic element typically between 500 ° C. and 650 ° C. More specifically, the incrustation steps of the manufacturing process according to the invention are illustrated schematically using the figures 3 to 7 .
- the support 2 provided with the recess (s) 4 is made available ( fig.3 ).
- the preform (s) intended to form the aesthetic element (s) 3 are made available.
- the aesthetic element to be inlaid is in the form of an annular preform with a diameter and a ring width of dimensions substantially equivalent to those of the indices.
- a non-stick layer e.g. made of boron nitride, can be applied to the surface intended to be in contact with the press.
- the support is preheated to avoid thermal shock.
- the preheating temperature is between 300 and 500 ° C.
- the preform 3 is placed on the surface 2a of the support 2 at the level of the recess 4 ( fig.4 ).
- the assembly is placed in a press where the preform is heated to a temperature between the solidus and the liquidus of the material constituting the preform, which makes it possible to soften the material before pressing. Then, a pressure P is applied to the preform 3 to fill the recesses 4 with the aluminum alloy ( fig. 5 and fig. 6 ).
- the load during encrustation is kept at a value of less than 1000 kg to avoid damaging the support. This load is advantageously between 500 and 800 kg.
- This pressing cycle can be carried out in several stages with a precharge stage before increasing the pressure to the desired maximum pressure.
- the step of encrusting the aluminum alloy in the recesses is then followed by a cooling step and a possible mechanical rectification step such as a polishing allowing to remove the surplus of the aesthetic element. 3 ( fig.7 ) and make visible surfaces of the support and of the aesthetic element connected to each other without any continuity solution.
- the preform was heated to 550 ° C for 90 seconds and pressed under a load of the order of 750 kg.
- the aesthetic element is subjected to a finishing treatment.
- This treatment can consist of a selective electrochemical treatment of the encrusted metallic material, and more precisely, an anodization with or without coloring to modify the appearance and / or the hardness of the encrusted material.
- the supports targeted by the present invention being predominantly electrically non-conductive, the difficulty lies in the routing of the current to the aesthetic elements during the electrochemical treatment and this, via contact points which must imperatively not be visible on the decorative piece. .
- one or more of the recesses are configured to lead to a face intended to be invisible from the decorative piece. These recesses opening onto the non-visible face form as many contact points making it possible to bring the current to the embedded aesthetic elements.
- the recess 4 for each of the indices opens onto the rear face 2b of the bezel 1 as illustrated in figure 10 .
- the contact points 4b make it possible to bring the current to each of the indices during the electrochemical treatment.
- These contact points 4b on the rear face 2b of the support 2 may have a cross section which is less than that of the part 4a of the recess opening onto the visible face 2a of the support 2. These contact points allow the same electrochemical treatment to be carried out. for each index or possibly to combine different treatments and therefore colors by bringing the current to only one or more of the indices for each electrochemical treatment.
- the aesthetic element 3 is larger, as in the examples of figures 11A and 12B , several points of contact per aesthetic element may be required to ensure uniform electrochemical treatment of the aesthetic element.
- three aesthetic elements 3 are distributed over an annular portion of the visible face 2a of the telescope 1.
- the aesthetic elements 3 are embedded on the substrate 2 including the indicia made of a non-conductive material .
- the telescope 1 is provided with several orifices 4b communicating with the recesses 4 to produce the contact points making it possible to bring the current to these three elements.
- two contact points 4b are provided per aesthetic element 3.
- the Figures 12B and 12C represent another configuration of an aesthetic aluminum element embedded in a recess formed in a support.
- the aesthetic element 3 extends up to a horn 8a of the middle part of the watch case 8 and includes housings 3a for the setting of stones 9.
- the recess receiving the aesthetic element opens out at least in one place on an invisible side of the watch case. It is thus conceivable that the recess 4 communicates with the bar hole 10 as illustrated in the figure 12A .
- the recess 4 can communicate in several places through other through orifices making it possible to produce contact points bringing the current to the aesthetic element 3
- the present invention thus makes it possible, thanks to the electrical contact point (s) provided (s) on an invisible side of the watch case, electrochemically treating the aesthetic element after crimping with the stones.
- the present invention has been more specifically illustrated for a decorative timepiece, but it goes without saying that the process according to the invention applies to the production of decorative pieces in many other fields such as jewelry, telephony, cars, etc.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Abstract
L'invention concerne un procédé de fabrication d'une pièce (1) comprenant un support (2) muni d'au moins une creusure (4) remplie avec un élément esthétique (3) formant un décor sur une face (2a) de la pièce (1) destinée à être visible, ledit procédé comprenant les étapes de :
- Mise à disposition du support (2) muni de ladite au moins creusure (4) et mise à disposition d'une préforme destinée à former l'élément esthétique (3) de la pièce (1),
- Incrustation par pressage à chaud de la préforme dans ladite au moins creusure (4) du support (2),
le procédé étant caractérisé en ce que la préforme est réalisée dans un alliage cristallin d'aluminium, l'étape d'incrustation étant réalisée à une température comprise entre la température de solidus et la température de liquidus de l'alliage cristallin d'aluminium.The invention relates to a method of manufacturing a part (1) comprising a support (2) provided with at least one recess (4) filled with an aesthetic element (3) forming a decoration on one face (2a) of the part (1) intended to be visible, said method comprising the steps of:
- Provision of the support (2) provided with said at least one recess (4) and provision of a preform intended to form the aesthetic element (3) of the part (1),
- Inlay by hot pressing of the preform in said at least one recess (4) of the support (2),
the method being characterized in that the preform is produced in a crystalline aluminum alloy, the inlaying step being carried out at a temperature between the solidus temperature and the liquidus temperature of the crystalline aluminum alloy.
L'invention concerne également la pièce (1) issue du procédé. The invention also relates to the part (1) resulting from the process.
Description
La présente invention se rapporte à un procédé de fabrication d'une pièce décorative comprenant une étape d'incrustation par pressage à chaud d'un alliage cristallin métallique dans un support notamment en céramique et à la pièce décorative issue du procédé.The present invention relates to a method of manufacturing a decorative piece comprising a step of inlaying by hot pressing of a crystalline metallic alloy in a support in particular ceramic and to the decorative piece resulting from the process.
Il est connu de décorer des composants d'habillage en horlogerie avec des éléments esthétiques. Il existe, par exemple, des lunettes de montre décorées de motifs tels que des indices. Ces lunettes, généralement en céramique, peuvent être marquées de différentes façons et par différents matériaux tels que de l'or, de l'argent ou du platine. Ledit marquage peut être réalisé en relief ou en profondeur. Dans le cas d'un marquage en profondeur, celui-ci est réalisé par remplissage de creusures préalablement usinées dans le support. Le principe utilisé pour la réalisation de ce marquage consiste à déposer une couche d'accrochage conductrice par dépôt physique en phase vapeur (PVD). Une fois la couche d'accrochage déposée, les creusures sont remplies du métal par électroformage. Ce procédé présente pour désavantages d'être complexe et extrêmement lent.It is known to decorate watch components in watchmaking with aesthetic elements. There are, for example, watch glasses decorated with patterns such as indices. These glasses, generally made of ceramic, can be marked in different ways and with different materials such as gold, silver or platinum. Said marking can be carried out in relief or in depth. In the case of deep marking, this is achieved by filling recesses previously machined in the support. The principle used for carrying out this marking consists in depositing a conductive bonding layer by physical vapor deposition (PVD). Once the bonding layer has been deposited, the recesses are filled with metal by electroforming. This process has the disadvantages of being complex and extremely slow.
Un autre procédé décrit dans le document
Pour pallier les désavantages précités, la présente invention a pour objet de proposer un procédé de fabrication d'une pièce décorative comprenant une étape d'incrustation par pressage d'un alliage métallique cristallin dans une ou plusieurs creusures ménagées dans un support qui est notamment en céramique. L'incrustation d'un métal cristallin vise à augmenter le contraste entre l'élément esthétique et son support et à réduire les coûts de fabrication. Selon l'invention, le choix du métal cristallin se porte sur un alliage d'aluminium qui présente notamment pour avantage d'être déformable à basse température par rapport à d'autres alliages métalliques cristallins. Le procédé selon l'invention permet ainsi de réaliser une pièce décorative comprenant un ou plusieurs éléments esthétiques en aluminium, ce qui est difficilement réalisable avec d'autres procédés, que ce soit par dépôt PVD ou par électroformage.To overcome the aforementioned disadvantages, the present invention aims to provide a method of manufacturing a decorative piece comprising a step of inlaying by pressing a crystalline metal alloy in one or more recesses formed in a support which is in particular in ceramic. The inlay of a crystalline metal aims to increase the contrast between the aesthetic element and its support and to reduce manufacturing costs. According to the invention, the choice of crystalline metal relates to an aluminum alloy which has the particular advantage of being deformable at low temperature compared to other crystalline metal alloys. The method according to the invention thus makes it possible to produce a decorative piece comprising one or more aesthetic elements in aluminum, which is difficult to achieve with other methods, whether by PVD deposition or by electroforming.
Avantageusement, le procédé de fabrication comprend à la suite de l'étape d'incrustation et d'une éventuelle étape de rectification mécanique un traitement électrochimique visant à modifier l'état de surface des éléments esthétiques incrustés à des fins de protection et/ou à des fins esthétiques. Ce traitement peut consister en une anodisation sélective desdits éléments avec ou sans coloration. Le support, notamment en céramique, n'étant pas un conducteur électrique, une ou plusieurs des creusures débouchent sur une face de la pièce décorative destinée à être non visible en utilisation. Ces creusures communiquant avec la face non visible forment autant de points de contact permettant d'amener le courant sur les éléments esthétiques à traiter par voie électrochimique. Grâce à ces points de contact non visibles, il est possible d'apporter du courant sur des décors fins et nombreux comme sur une échelle tachymétrique d'une lunette de montre. Une large palette de couleurs et même des dégradés de couleurs peuvent être obtenus sur ces décors. Il est également envisageable d'incruster un alliage d'aluminium à moindre coût et de le rendre ensuite dur par anodisation. Ce traitement par voie électrochimique est réalisé sur les décors incrustés dans leur état de surface final : poli, satiné, sablé et donc en fin de procédé de fabrication.Advantageously, the manufacturing process comprises, following the incrustation step and a possible mechanical rectification step, an electrochemical treatment aimed at modifying the surface condition of the esthetic elements encrusted for the purposes of protection and / or aesthetic purposes. This treatment can consist of a selective anodization of said elements with or without coloring. Since the support, in particular ceramic, is not an electrical conductor, one or more of the recesses open onto one face of the decorative piece intended to be not visible in use. These recesses communicating with the non-visible face form as many contact points making it possible to bring the current to the aesthetic elements to be treated electrochemically. Thanks to these non-visible contact points, it is possible to bring current to fine and numerous decors such as on a tachymeter scale of a watch bezel. A wide range of colors and even gradations of colors can be obtained on these decorations. It is also possible to encrust an aluminum alloy at a lower cost and then make it hard by anodization. This electrochemical treatment is carried out on the decorations encrusted in their final surface condition: polished, satin, sanded and therefore at the end of the manufacturing process.
D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante de modes de réalisation préférés, présentés à titre d'exemple non limitatif en référence aux dessins annexés.Other characteristics and advantages of the present invention will appear in the following description of preferred embodiments, presented by way of nonlimiting example with reference to the accompanying drawings.
-
La
figure 1 représente une vue en plan d'une pièce décorative et, en particulier, d'une lunette de montre comportant des indices en alliage d'aluminium réalisés par incrustation avec le procédé selon l'invention.Thefigure 1 represents a plan view of a decorative piece and, in particular, of a watch bezel comprising indices in aluminum alloy produced by inlaying with the method according to the invention. -
La
figure 2 représente une vue partielle en coupe de cette même pièce décorative.Thefigure 2 represents a partial sectional view of this same decorative piece. -
Les
figures 3 à 7 représentent schématiquement les étapes d'incrustation de la préforme en alliage d'aluminium dans le support avec le procédé selon l'invention.Thefigures 3 to 7 schematically represent the steps of embedding the aluminum alloy preform in the support with the method according to the invention. -
Les
figures 8 et 9 représentent respectivement deux variantes des moyens mis en oeuvre selon l'invention pour maintenir l'élément esthétique au sein de la creusure.TheFigures 8 and 9 respectively represent two variants of the means used according to the invention to maintain the aesthetic element within the recess. -
La
figure 10 représente une variante de lafigure 2 avec les creusures débouchant sur la face arrière, c'est-à-dire la face non visible, de la lunette.Thefigure 10 represents a variant of thefigure 2 with the recesses opening onto the rear face, that is to say the non-visible face, of the telescope. -
La
figure 11A représente une vue de la face avant, c'est-à-dire de la face visible, de la lunette incrustée avec plusieurs éléments esthétiques, ainsi qu'une vue en coupe partielle de la lunette, focalisée sur un élément esthétique. Lafigure 11B représente une vue de la face arrière de cette même lunette.Thefigure 11A represents a view of the front face, that is to say of the visible face, of the bezel inlaid with several aesthetic elements, as well as a view in partial section of the bezel, focused on an aesthetic element. Thefigure 11B represents a view of the rear face of this same telescope. -
La
figure 12A représente une vue tridimensionnelle d'une boîte de montre comprenant sur la carrure une creusure communiquant avec le trou de barrette. Lafigure 12B représente cette même boîte de montre comprenant un élément esthétique incrusté dans la creusure. Lafigure 12C représente cette même boîte de montre comprenant l'élément esthétique incrusté dans la creusure et serti avec des pierres.Thefigure 12A represents a three-dimensional view of a watch case comprising on the middle a recess communicating with the bar hole. Thefigure 12B represents this same watch case including an aesthetic element embedded in the recess. Thefigure 12C represents this same watch case comprising the aesthetic element embedded in the recess and set with stones.
La présente invention se rapporte à un procédé de fabrication d'une pièce décorative par pressage à chaud, aussi dit par incrustation, d'un ou plusieurs éléments esthétiques dans un support muni d'une ou plusieurs creusures et à la pièce décorative issue du procédé. La pièce peut notamment être un composant d'habillage en horlogerie tel qu'une lunette, un cadran, une boîte, une couronne, un poussoir, une glace, un élément de bracelet, etc. A titre d'exemple illustré aux
Selon l'invention, l'élément esthétique est réalisé dans un alliage métallique cristallin et plus précisément dans un alliage cristallin d'aluminium. Le support est quant à lui préférentiellement réalisé dans un matériau peu ductile. Il peut, par exemple, s'agir d'une céramique, du saphir, de l'émail, etc. De préférence, il s'agit d'une céramique et, plus préférentiellement, d'une zircone. Ainsi, la pièce peut consister en une lunette de montre en zircone avec des indices réalisés dans un alliage d'aluminium. En particulier, il peut s'agir de l'alliage 7075 qui comprend du zinc à hauteur de ∼ 6% en poids. L'alliage d'aluminium a pour avantage d'être malléable à faible température de par sa température de fusion peu élevée de l'ordre de 650°C.According to the invention, the aesthetic element is made of a crystalline metal alloy and more precisely of a crystalline aluminum alloy. The support, for its part, is preferably made of a material which is not very ductile. It can, for example, be a ceramic, sapphire, enamel, etc. Preferably, it is a ceramic and, more preferably, a zirconia. Thus, the part may consist of a zirconia watch bezel with indices made from an aluminum alloy. In particular, it may be alloy 7075 which comprises zinc up to ∼ 6% by weight. The advantage of aluminum alloy is that it is malleable at low temperatures due to its low melting temperature of around 650 ° C.
Le support 2 comporte au moins une creusure 4 réalisée par gravage laser, par usinage, etc. La creusure 4 présente sur la surface 2a du support 2 destinée à être visible une forme 4a correspondant au contour du décor souhaité. Cette creusure 4 peut être borgne (
Selon l'invention, les éléments esthétiques sont incrustés par pressage à chaud dans les creusures du support à une température comprise entre la température de solidus et la température de liquidus de l'alliage d'aluminium constituant l'élément esthétique typiquement entre 500°C et 650°C. Plus précisément, les étapes d'incrustation du procédé de fabrication selon l'invention sont illustrées schématiquement à l'aide des
A titre d'exemple, dans le cas d'une incrustation de l'alliage métallique d'aluminium 7075 dans un support à base de zircone. Le support a été préchauffé à 450°C, la préforme a été chauffée à 550°C pendant 90 secondes et pressée sous une charge de l'ordre de 750 kg.For example, in the case of an inlay of the aluminum metal alloy 7075 in a support based on zirconia. The support was preheated to 450 ° C, the preform was heated to 550 ° C for 90 seconds and pressed under a load of the order of 750 kg.
Avantageusement, après l'étape de rectification mécanique, l'élément esthétique est soumis à un traitement de finition. Ce traitement peut consister en un traitement électrochimique sélectif de la matière métallique incrustée, et plus précisément, en une anodisation avec ou sans coloration pour modifier l'apparence et/ou la dureté de la matière incrustée. Les supports visés par la présente invention étant majoritairement électriquement non conducteurs, la difficulté réside dans l'acheminement du courant jusqu'aux éléments esthétiques lors du traitement électrochimique et, ce, via des points de contact qui doivent impérativement être non visibles sur la pièce décorative. A cet effet, une ou plusieurs des creusures sont configurées pour déboucher sur une face destinée à être non visible de la pièce décorative. Ces creusures débouchant sur la face non visible forment autant de points de contact permettant d'amener le courant sur les éléments esthétiques incrustés. Revenant à l'exemple de la lunette de montre en céramique comprenant des indices réalisés par incrustation d'un alliage cristallin d'aluminium, la creusure 4 pour chacun des indices débouche sur la face arrière 2b de la lunette 1 comme illustré à la
Si l'élément esthétique 3 est de taille plus importante, comme dans les exemples des
La présente invention a été plus spécifiquement illustrée pour une pièce décorative en horlogerie mais il va de soi que le procédé selon l'invention s'applique pour la réalisation de pièces décoratives dans de nombreux autres domaines tels que la joaillerie, la téléphonie, l'automobile, etc.The present invention has been more specifically illustrated for a decorative timepiece, but it goes without saying that the process according to the invention applies to the production of decorative pieces in many other fields such as jewelry, telephony, cars, etc.
- (1) Pièce décorative(1) Decorative piece
-
(2) Support
- a. Face visible
- b. Face invisible
- at. Visible face
- b. Invisible face
-
(3) Elément esthétique ou préforme
- a. Logement
- at. Housing
-
(4) Creusure
- a. Partie débouchant sur la face visible du support
- b. Partie débouchant sur la face non visible du support, aussi appelée point de contact
- at. Part leading to the visible face of the support
- b. Part leading to the non-visible side of the support, also called contact point
- (5) Logement dans la creusure(5) Housing in the recess
- (6) Excroissance dans la creusure(6) Outgrowth in the recess
- (7) Flanc de la creusure(7) Side of the hollow
-
(8) Boîte de montre
- a. Corne
- at. Horn
- (9) Pierre(9) Stone
- (10) Trou de barrette(10) Bar hole
Claims (20)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18180563.1A EP3587626B1 (en) | 2018-06-28 | 2018-06-28 | Decorative part made by incrustation |
KR1020207034176A KR102491225B1 (en) | 2018-06-28 | 2019-06-26 | Decorative parts manufactured by inlaying |
JP2020564933A JP6980933B2 (en) | 2018-06-28 | 2019-06-26 | Decorative parts manufactured by inlaying |
US17/056,262 US20210240138A1 (en) | 2018-06-28 | 2019-06-26 | Decorative part made by inlaying |
CN201980038134.3A CN112236549B (en) | 2018-06-28 | 2019-06-26 | Decorative part made by inlaying |
PCT/EP2019/066956 WO2020002402A1 (en) | 2018-06-28 | 2019-06-26 | Decorative part produced by inlaying |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18180563.1A EP3587626B1 (en) | 2018-06-28 | 2018-06-28 | Decorative part made by incrustation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3587626A1 true EP3587626A1 (en) | 2020-01-01 |
EP3587626B1 EP3587626B1 (en) | 2023-02-22 |
Family
ID=62874567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18180563.1A Active EP3587626B1 (en) | 2018-06-28 | 2018-06-28 | Decorative part made by incrustation |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210240138A1 (en) |
EP (1) | EP3587626B1 (en) |
JP (1) | JP6980933B2 (en) |
KR (1) | KR102491225B1 (en) |
CN (1) | CN112236549B (en) |
WO (1) | WO2020002402A1 (en) |
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2018
- 2018-06-28 EP EP18180563.1A patent/EP3587626B1/en active Active
-
2019
- 2019-06-26 CN CN201980038134.3A patent/CN112236549B/en active Active
- 2019-06-26 KR KR1020207034176A patent/KR102491225B1/en active IP Right Grant
- 2019-06-26 WO PCT/EP2019/066956 patent/WO2020002402A1/en active Application Filing
- 2019-06-26 JP JP2020564933A patent/JP6980933B2/en active Active
- 2019-06-26 US US17/056,262 patent/US20210240138A1/en active Pending
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JP2008089533A (en) * | 2006-10-05 | 2008-04-17 | Citizen Holdings Co Ltd | Timepiece dial plate |
US20090080294A1 (en) * | 2007-09-20 | 2009-03-26 | Casio Computer Co., Ltd. | Dial plate unit with indicating members and dial plate, and device with the dial plate unit |
EP2315673A1 (en) | 2008-06-23 | 2011-05-04 | Omega SA | Decorative item produced by inlaying |
CH699993A2 (en) * | 2008-11-28 | 2010-05-31 | Swatch Group Res & Dev Ltd | Method for three-dimensional decoration of element e.g. frame of watch, involves filling mold with material, removing excessive filling material to align upper surface of decorations with upper surface of mask, and removing mask |
Also Published As
Publication number | Publication date |
---|---|
CN112236549A (en) | 2021-01-15 |
EP3587626B1 (en) | 2023-02-22 |
CN112236549B (en) | 2023-09-29 |
KR102491225B1 (en) | 2023-01-20 |
US20210240138A1 (en) | 2021-08-05 |
KR20210005701A (en) | 2021-01-14 |
JP6980933B2 (en) | 2021-12-15 |
JP2021526206A (en) | 2021-09-30 |
WO2020002402A1 (en) | 2020-01-02 |
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