EP4009116A1 - Artikel aus cermet und/oder keramik and verfahren - Google Patents

Artikel aus cermet und/oder keramik and verfahren Download PDF

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Publication number
EP4009116A1
EP4009116A1 EP20211403.9A EP20211403A EP4009116A1 EP 4009116 A1 EP4009116 A1 EP 4009116A1 EP 20211403 A EP20211403 A EP 20211403A EP 4009116 A1 EP4009116 A1 EP 4009116A1
Authority
EP
European Patent Office
Prior art keywords
article
circle
materials
manufacturing process
injection
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.)
Pending
Application number
EP20211403.9A
Other languages
English (en)
French (fr)
Inventor
Pascal CHOPARD-LALLIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comadur SA
Original Assignee
Comadur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comadur SA filed Critical Comadur SA
Priority to EP20211403.9A priority Critical patent/EP4009116A1/de
Priority to US17/492,927 priority patent/US20220179365A1/en
Priority to JP2021170699A priority patent/JP7387691B2/ja
Priority to CN202111448292.1A priority patent/CN114609886B/zh
Publication of EP4009116A1 publication Critical patent/EP4009116A1/de
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04DAPPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0069Watchmakers' or watch-repairers' machines or tools for working materials for working with non-mechanical means, e.g. chemical, electrochemical, metallising, vapourising; with electron beams, laser beams
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/06Dials
    • G04B19/12Selection of materials for dials or graduations markings
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/28Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/24Producing shaped prefabricated articles from the material by injection moulding
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/04Making non-ferrous alloys by powder metallurgy
    • C22C1/05Mixtures of metal powder with non-metallic powder
    • C22C1/051Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/005Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00Indicating the time by visual means
    • G04B19/06Dials
    • G04B19/10Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • G04B19/103Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial attached or inlaid numbers
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00Cases
    • G04B37/22Materials or processes of manufacturing pocket watch or wrist watch cases
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0076Decoration of the case and of parts thereof, e.g. as a method of manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/005Article surface comprising protrusions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10Processes characterised by the sequence of their steps

Definitions

  • the present invention relates to an article obtained by multiple injection of ceramics and/or cermets. It relates more particularly to a horological component such as a bezel produced by injection of ceramics and/or cermets of different colors.
  • the object of the present invention is to overcome the aforementioned disadvantages by proposing a new multi-material injection process limiting the differences in shrinkage between the distinct materials injected.
  • the present invention relates to a manufacturing method making use, during the injection step, of an insert having a raised or recessed structure intended to imprint on the first injected material a gripping surface for the second material injected.
  • This gripping surface makes it possible to maintain the second material injected, to reduce the shrinkage during the sintering step and to avoid the separation of the two materials during the machining step.
  • the method further comprises a machining step before and/or after the sintering step to respectively size the green body and/or the blank and to partially remove the second material so as to reveal the first material.
  • the present invention also relates to the ceramic and/or cermet article resulting from the manufacturing process.
  • the article according to the invention comprises at least two distinct materials differing by their colors, more generally by their aesthetic appearance, and/or their mechanical properties.
  • the article comprises a part where the two materials are interleaved.
  • the article comprises a part where one of the materials fills indentations made in the other material.
  • the present invention relates to a manufacturing process by injection of an article made with at least two distinct materials which are either a cermet or a ceramic.
  • the term “separate materials” means materials that differ by their aesthetic appearance, in particular their color, and/or by their mechanical properties. This results in differences in chemical compositions. It can be the same base material with different pigments to change the color or different base materials. By way of example, it may be the same base material based on zirconium oxide with, on the one hand, a black pigment to obtain a black material and, on the other hand, alumina to obtain the white color. More generally, the ceramics can be nitrides, carbides and/or oxides.
  • cermets may comprise a ceramic phase comprising carbides, nitrides and/or oxides and a phase of a metallic binder chosen, for example, from precious elements such as ruthenium, rhodium, palladium, osmium, iridium, platinum, gold and silver.
  • the article according to the invention can be a decorative article such as a constituent element of watches, jewellery, bracelets, etc.
  • this article can be a trim component such as a middle part, a back, a bezel, a pusher, a bracelet link, a dial, a hand, a dial index, etc. It can also be a component of the movement such as an oscillating weight, a plate, etc.
  • the article is a bezel 1 made with two ceramics 2 and 3 of different colors, for example black and white, with one color which occupies a quarter of the circle of the bezel and another color which occupies three remaining quarters of the circle as shown in figure 6 .
  • the article comprises a part 4 where the two materials 2 and 3 overlap and more specifically overlap ( fig.5B ).
  • Interlocking is understood to mean that one of the two materials has on its surface a structure filled by the other material.
  • the two materials 2 and 3 are observed which are superimposed with the nesting of one in the recesses 2a formed on the surface of the other.
  • the article is made by injecting different materials to form a green body and by sintering said green body.
  • the manufacturing process is illustrated below for an article comprising two distinct materials, but it could be an article comprising 3, 4, etc. different materials with production of a gripping surface for each of the successive materials injected.
  • the method further comprises a machining step preferably carried out on the green body before sintering so that the material is not too hard. During this machining step, the second material is at least partially removed in order to reveal the first material.
  • the present invention does not exclude that the machining step is carried out partly before sintering and partly after sintering.
  • the method may optionally include a debinding step before the sintering step if the materials have been injected with a system of organic binders (paraffin, polyethylene, etc.).
  • a debinding step before the sintering step if the materials have been injected with a system of organic binders (paraffin, polyethylene, etc.).
  • the injection device comprises a mold 5 with a fixed part 5a formed of two cavities 6 with a first cavity 6a intended for the injection of the first material 2 and a second cavity 6b intended for the injection of the second matter 3 ( fig.1 ).
  • the first imprint 6a comprises the insert 7 with the structure in relief.
  • the insert is attached to the cavity but it could also be integral with the rest of the cavity.
  • the first material 2 is injected into the mold 5 formed of the fixed part 5a and the movable part 5b as shown in picture 3 to the right. Then, the mobile part 5a with the first injected material 2 is moved above the fixed part 5b of the other cavity 6b to perform the injection of the second material 3 ( fig.3 to the left).
  • the insert 7 with a structure in relief is intended to print hollows 2a in the first material 2 which will serve as a grip during the injection of the second material 3.
  • the insert 7 protrudes with respect to the plane of the cavity 6a so as to form a pocket 9 which will be filled with the second material 3 during the second injection ( fig.3 to the left).
  • the figure 4 represents the green body 8 resulting from the bi-injection with the second material 3 superimposed on the first material 2.
  • the carrot 10 is cut and the inside diameter of the bezel is hollowed out.
  • the layer of second material 3 is removed with the exception of the layer filling the pocket so as to obtain the blank of the figure 5A .
  • the manufacturing process includes a finishing step which consists in polishing the surface of the sintered blank and etching the surface if necessary, with for example indexes 12 in the case of a bezel 1 ( fig.6 ).
  • a bezel 1 according to the figure 6 is obtained by injection of a white zirconia and a black zirconia and by sintering at a temperature of 1400° C. for a time of 48 hours under an oxidizing atmosphere.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Composite Materials (AREA)
  • Adornments (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Micromachines (AREA)
  • Compositions Of Oxide Ceramics (AREA)
EP20211403.9A 2020-12-03 2020-12-03 Artikel aus cermet und/oder keramik and verfahren Pending EP4009116A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20211403.9A EP4009116A1 (de) 2020-12-03 2020-12-03 Artikel aus cermet und/oder keramik and verfahren
US17/492,927 US20220179365A1 (en) 2020-12-03 2021-10-04 Item made from cermet and/or ceramic
JP2021170699A JP7387691B2 (ja) 2020-12-03 2021-10-19 サーメット及び/又はセラミックスによって作られた物
CN202111448292.1A CN114609886B (zh) 2020-12-03 2021-11-30 由金属陶瓷和/或陶瓷制成的物品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20211403.9A EP4009116A1 (de) 2020-12-03 2020-12-03 Artikel aus cermet und/oder keramik and verfahren

Publications (1)

Publication Number Publication Date
EP4009116A1 true EP4009116A1 (de) 2022-06-08

Family

ID=73698553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20211403.9A Pending EP4009116A1 (de) 2020-12-03 2020-12-03 Artikel aus cermet und/oder keramik and verfahren

Country Status (4)

Country Link
US (1) US20220179365A1 (de)
EP (1) EP4009116A1 (de)
JP (1) JP7387691B2 (de)
CN (1) CN114609886B (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046003A1 (de) * 2009-10-26 2011-04-28 Robert Bosch Gmbh Stoffschlüssige Verbindung von Metall und Keramik für Einspritzventile
EP2628607A1 (de) * 2012-02-15 2013-08-21 Omega SA Verankerungsvorrichtung einer Metall-Einlegearbeit
EP2746243A1 (de) 2012-12-21 2014-06-25 Rolex S.A. Farbige technische Keramikkörper und Verfahren zum Herstellen davon
EP2746242A1 (de) * 2012-12-21 2014-06-25 Rolex S.A. Farbige technische Keramikkörper und Verfahren zum Erhalten davon
WO2015150552A1 (fr) * 2014-04-04 2015-10-08 Rolex Sa Procede de fabrication d'un composant horloger pourvu d'un insert en matiere composite, composant horloger et piece d'horlogerie associes
EP3622846A1 (de) * 2018-09-14 2020-03-18 Comadur S.A. Verfahren zum zusammenbau von mindestens zwei elementen
CH716192A2 (fr) * 2019-05-14 2020-11-30 Metallique Sa Composant en céramique destiné à être rapporté sur un cadran de montre et procédé de fabrication d'un tel composant.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH411716A (fr) * 1964-04-06 1965-12-31 Lapidor Sa Procédé de fabrication d'un cadran d'horlogerie et cadran obtenu par la mise en oeuvre de ce procédé
FR2257404B1 (de) * 1973-09-21 1976-05-14 Billion Sa
JP4528140B2 (ja) 2004-02-27 2010-08-18 日本特殊陶業株式会社 複合セラミックグリーンシート、セラミック焼成体、ガスセンサ素子、ガスセンサ、複合セラミックグリーンシートの製造方法
CH702836B1 (fr) * 2008-06-23 2011-09-30 Omega Sa Pièce décorative réalisée par incrustation et pièce d'horlogerie comprenant une telle pièce.
KR101579034B1 (ko) * 2012-05-30 2015-12-18 더 스와치 그룹 리서치 앤 디벨롭먼트 엘티디 적어도 하나의 복합 세라믹 장식으로 상감된 세라믹 엘리먼트
JP5991050B2 (ja) 2012-07-04 2016-09-14 東ソー株式会社 セラミックス接合体の製造方法および装飾部材
EP3052994A2 (de) * 2013-10-01 2016-08-10 Roland Iten Mechanical Luxury SA Taucheruhr
JP6884998B2 (ja) 2015-06-25 2021-06-09 東ソー株式会社 ジルコニア焼結体及びその用途
CN109991828B (zh) * 2019-05-08 2023-07-18 东莞得利钟表有限公司 一种轻质高弹液态金属手表壳体及其生产方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046003A1 (de) * 2009-10-26 2011-04-28 Robert Bosch Gmbh Stoffschlüssige Verbindung von Metall und Keramik für Einspritzventile
EP2628607A1 (de) * 2012-02-15 2013-08-21 Omega SA Verankerungsvorrichtung einer Metall-Einlegearbeit
EP2746243A1 (de) 2012-12-21 2014-06-25 Rolex S.A. Farbige technische Keramikkörper und Verfahren zum Herstellen davon
EP2746242A1 (de) * 2012-12-21 2014-06-25 Rolex S.A. Farbige technische Keramikkörper und Verfahren zum Erhalten davon
WO2015150552A1 (fr) * 2014-04-04 2015-10-08 Rolex Sa Procede de fabrication d'un composant horloger pourvu d'un insert en matiere composite, composant horloger et piece d'horlogerie associes
EP3622846A1 (de) * 2018-09-14 2020-03-18 Comadur S.A. Verfahren zum zusammenbau von mindestens zwei elementen
CH716192A2 (fr) * 2019-05-14 2020-11-30 Metallique Sa Composant en céramique destiné à être rapporté sur un cadran de montre et procédé de fabrication d'un tel composant.

Also Published As

Publication number Publication date
CN114609886A (zh) 2022-06-10
JP2022089159A (ja) 2022-06-15
JP7387691B2 (ja) 2023-11-28
CN114609886B (zh) 2024-08-16
US20220179365A1 (en) 2022-06-09

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