EP1051533A1 - Piece de montre en alliage de titane - Google Patents
Piece de montre en alliage de titaneInfo
- Publication number
- EP1051533A1 EP1051533A1 EP98900519A EP98900519A EP1051533A1 EP 1051533 A1 EP1051533 A1 EP 1051533A1 EP 98900519 A EP98900519 A EP 98900519A EP 98900519 A EP98900519 A EP 98900519A EP 1051533 A1 EP1051533 A1 EP 1051533A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- maximum
- watch
- alloy
- titanium
- manufacturing
- 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
- 229910001069 Ti alloy Inorganic materials 0.000 title claims description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 38
- 239000000956 alloy Substances 0.000 claims abstract description 38
- 239000010936 titanium Substances 0.000 claims abstract description 32
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000000930 thermomechanical effect Effects 0.000 claims description 10
- 238000011282 treatment Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 230000002051 biphasic effect Effects 0.000 claims 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000003266 anti-allergic effect Effects 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory 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
- G04B37/00—Cases
- G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
Definitions
- the present invention relates to a titanium alloy watch piece according to the preamble of claim 1.
- An object of the invention is therefore to propose titanium watch parts having an appearance different from the titanium parts of the prior art, and therefore capable of occupying other commercial niches.
- this goal is achieved by using a family of alloys containing at least 75% of titanium, hardened by treatment thermomechanical and having in common a mechanical resistance greater than 750MPa, preferably however close to 10OOMPa. These particular alloys have the advantage of being able to be polished on large surfaces.
- Patent document EP416929 describes a process for manufacturing a titanium alloy watch case in which the already machined part is heated to a temperature above the transformation temperature ⁇ , that is to say above about 780 °, then quenched, so as to bring it into a martensitic phase. An aging operation is then necessary before being able to polish the watch case. This process comprising a large number of separate operations is therefore difficult to implement on an industrial scale.
- Optimal polishing quality can therefore be obtained by refining the microstructure of the alloy, that is to say by reducing the size of the grains constituting the alloy of the watch piece. According to the invention, this refinement is obtained by subjecting the watch part to a thermomechanical treatment.
- the invention will be better understood using the examples given in the following description, no figure being necessary to illustrate them.
- the invention applies to the manufacture of any watch part, in particular the middle part, the back of the case, the bezel, the bracelet and at least certain elements of the folding clasp and the clasp .
- the invention therefore applies to any external part of a pocket or wrist watch.
- At least one of these parts is made of solid titanium alloy with medium or high mechanical resistance, that is to say of titanium alloy having a mechanical resistance greater than 750 MPa, preferably however close to 10OOMpa .
- the thermomechanical treatment preferably consists of an operation of heating the alloy to a temperature below the transformation temperature ⁇ (780 °) during an operation of deformation of the initial part.
- the thermomechanical treatment consists of stamping the part heated to a temperature between 600 and 750 °, preferably however between 600 and 700 °.
- Tests have shown that an effective refining of the microstructure of the alloy is obtained when it is simultaneously subjected to a pressure or to a significant deformation and heated to a temperature slightly lower than the transformation temperature ⁇ .
- Different mechanisms for example dynamic recrystallization, can be used for refining the microstructure. Grain sizes less than 5 ⁇ m, of the order of 1 ⁇ m, can be obtained by judiciously choosing the heating temperature and the applied deformation pressure.
- the alloys used can also be anodized and anodized to obtain different color effects.
- the hardening and stamping of the part are therefore carried out in a single operation; no subsequent heating, quenching or aging operation is necessary. This method is therefore particularly advantageous to implement compared to the methods of the prior art.
- the family of titanium alloys with medium and high mechanical resistance suitable for such a polishing comprises in particular: Binary alloys: Ti 8Mn
- Ternary alloys Ti 6AI 4V, Ti 7AI 4Mo
- Quaternary alloys Ti 8AI 1 Mo 1 V, Ti 10V 2Fe 3AI, Ti 6AI 6V 2Sn Ti 4AI 3Mo 1V Ti 10V 2Fe 3AI
- Alloys composed of 5 or more elements Ti 6AI 2Sn 4Zr 6Mo Ti 5AI 2Sn 4Zr 4Mo 4Cr Ti 6AI 2Sn 2Zr 2Mo 2Cr Ti i5V 3Cr 3AI 3Sn
- titanium alloys aluminum has the property of stabilizing the ⁇ phase, which is stable at temperatures up to 880 ° C. Vanadium stabilizes the ⁇ phase which is normally stable at temperatures above 880 ° C. Tests have shown that the Ti 6AI 4V alloy is optimal for the manufacture of a timepiece in mirror-polished titanium.
- the composition of this alloy can vary as follows: (composition in percentage by weight):
- the middle part, the back, the bezel, the folding clasp, the clasp and / or the strap of a watch are made of one of these alloys. It is nevertheless also possible to combine the use of these alloys for certain elements or for certain parts of certain elements with other materials for other elements. In particular, it is possible to combine the use of titanium with medium or high mechanical resistance for certain parts, in particular for visible parts when the watch is worn, with titanium with low mechanical resistance for less visible parts, for example for the folding clasp, which will then not be polished.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Adornments (AREA)
- Powder Metallurgy (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CH1998/000028 WO1999037827A1 (fr) | 1998-01-27 | 1998-01-27 | Piece de montre en alliage de titane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1051533A1 true EP1051533A1 (fr) | 2000-11-15 |
| EP1051533B1 EP1051533B1 (fr) | 2002-11-06 |
Family
ID=4551306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98900519A Expired - Lifetime EP1051533B1 (fr) | 1998-01-27 | 1998-01-27 | Procede de fabrication de pieces de montre en alliage de titane |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1051533B1 (fr) |
| JP (1) | JP2002527611A (fr) |
| KR (1) | KR20010052152A (fr) |
| AU (1) | AU5547398A (fr) |
| CA (1) | CA2318346A1 (fr) |
| DE (1) | DE69809294T2 (fr) |
| ES (1) | ES2183317T3 (fr) |
| TW (1) | TW397940B (fr) |
| WO (1) | WO1999037827A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946947A (zh) * | 2019-05-08 | 2019-06-28 | 东莞得利钟表有限公司 | 一种高强度抗腐蚀黑钛钟表饰件及其制作工艺 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HK1040421B (en) * | 1999-09-07 | 2011-11-18 | Citizen Watch Co., Ltd. | Ornament and method for preparation thereof |
| EP1245409A4 (fr) * | 2000-04-19 | 2009-08-19 | Citizen Holdings Co Ltd | Vaisselle et procede de traitement de surface correspondant, substrat pourvu d'un film de revetement decoratif dur et procede de production correspondant, coutellerie |
| JP4766408B2 (ja) | 2009-09-25 | 2011-09-07 | 日本発條株式会社 | ナノ結晶チタン合金およびその製造方法 |
| CH704233B1 (fr) * | 2010-12-17 | 2015-05-15 | Richemont Int Sa | Pièce d'habillage en alliage de titane pour l'horlogerie et procédé de fabrication de cet alliage. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT391882B (de) * | 1987-08-31 | 1990-12-10 | Boehler Gmbh | Verfahren zur waermebehandlung von alpha/beta-ti- legierungen und verwendung einer sprueheinrichtung zur durchfuehrung des verfahrens |
| US5171375A (en) * | 1989-09-08 | 1992-12-15 | Seiko Instruments Inc. | Treatment of titanium alloy article to a mirror finish |
| JPH03170649A (ja) * | 1989-11-27 | 1991-07-24 | Mitsubishi Materials Corp | Ti合金部材の研磨鏡面形成方法 |
| JPH0441656A (ja) * | 1990-06-08 | 1992-02-12 | Nkk Corp | チタン材の鏡面研磨方法 |
| JPH06136498A (ja) * | 1992-10-27 | 1994-05-17 | Seiko Instr Inc | β型チタン合金の鏡面処理方法 |
| JPH0762466A (ja) * | 1993-08-24 | 1995-03-07 | Seiko Instr Inc | 装飾用チタン合金およびその装飾品 |
| JP3083225B2 (ja) * | 1993-12-01 | 2000-09-04 | オリエント時計株式会社 | チタン合金製装飾品の製造方法、および時計外装部品 |
| WO1997037049A1 (fr) * | 1996-03-29 | 1997-10-09 | Kabushiki Kaisha Kobe Seiko Sho | Alliage de titane a haute resistance, produits issus de cet alliage et procede de fabrication |
-
1998
- 1998-01-27 DE DE69809294T patent/DE69809294T2/de not_active Expired - Lifetime
- 1998-01-27 JP JP2000528732A patent/JP2002527611A/ja active Pending
- 1998-01-27 ES ES98900519T patent/ES2183317T3/es not_active Expired - Lifetime
- 1998-01-27 CA CA002318346A patent/CA2318346A1/fr not_active Abandoned
- 1998-01-27 EP EP98900519A patent/EP1051533B1/fr not_active Expired - Lifetime
- 1998-01-27 KR KR1020007008141A patent/KR20010052152A/ko not_active Ceased
- 1998-01-27 AU AU55473/98A patent/AU5547398A/en not_active Abandoned
- 1998-01-27 WO PCT/CH1998/000028 patent/WO1999037827A1/fr not_active Ceased
-
1999
- 1999-01-22 TW TW088100988A patent/TW397940B/zh not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9937827A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946947A (zh) * | 2019-05-08 | 2019-06-28 | 东莞得利钟表有限公司 | 一种高强度抗腐蚀黑钛钟表饰件及其制作工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999037827A1 (fr) | 1999-07-29 |
| JP2002527611A (ja) | 2002-08-27 |
| TW397940B (en) | 2000-07-11 |
| DE69809294T2 (de) | 2003-08-21 |
| AU5547398A (en) | 1999-08-09 |
| DE69809294D1 (de) | 2002-12-12 |
| KR20010052152A (ko) | 2001-06-25 |
| EP1051533B1 (fr) | 2002-11-06 |
| CA2318346A1 (fr) | 1999-07-29 |
| ES2183317T3 (es) | 2003-03-16 |
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Legal Events
| Date | Code | Title | Description |
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