WO1999037827A1 - Titanium alloy watch part - Google Patents
Titanium alloy watch part Download PDFInfo
- Publication number
- WO1999037827A1 WO1999037827A1 PCT/CH1998/000028 CH9800028W WO9937827A1 WO 1999037827 A1 WO1999037827 A1 WO 1999037827A1 CH 9800028 W CH9800028 W CH 9800028W WO 9937827 A1 WO9937827 A1 WO 9937827A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- maximum
- watch
- alloy
- titanium
- manufacturing
- Prior art date
Links
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
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES98900519T ES2183317T3 (en) | 1998-01-27 | 1998-01-27 | MANUFACTURE OF MANUFACTURE OF TITANIUM ALLOY CLOCK PARTS. |
PCT/CH1998/000028 WO1999037827A1 (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
AU55473/98A AU5547398A (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
KR1020007008141A KR20010052152A (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
EP98900519A EP1051533B1 (en) | 1998-01-27 | 1998-01-27 | Manufacturing process of titanium alloy watch parts |
CA002318346A CA2318346A1 (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
JP2000528732A JP2002527611A (en) | 1998-01-27 | 1998-01-27 | Watch parts made of titanium alloy |
DE69809294T DE69809294T2 (en) | 1998-01-27 | 1998-01-27 | METHOD FOR PRODUCING TITANIUM ALLOY WATCH PARTS |
TW088100988A TW397940B (en) | 1998-01-27 | 1999-01-22 | Watch component of titanium alloy and method of manufacturing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH1998/000028 WO1999037827A1 (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999037827A1 true WO1999037827A1 (en) | 1999-07-29 |
Family
ID=4551306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1998/000028 WO1999037827A1 (en) | 1998-01-27 | 1998-01-27 | Titanium alloy watch part |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1051533B1 (en) |
JP (1) | JP2002527611A (en) |
KR (1) | KR20010052152A (en) |
AU (1) | AU5547398A (en) |
CA (1) | CA2318346A1 (en) |
DE (1) | DE69809294T2 (en) |
ES (1) | ES2183317T3 (en) |
TW (1) | TW397940B (en) |
WO (1) | WO1999037827A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1146136A1 (en) * | 1999-09-07 | 2001-10-17 | Citizen Watch Co. Ltd. | Ornament and method for preparation thereof |
KR100639132B1 (en) * | 2000-04-19 | 2006-10-27 | 시티즌 도케이 가부시키가이샤 | Substrate having hard decorative coating film and method for production thereof |
CH704233A1 (en) * | 2010-12-17 | 2012-06-29 | Richemont Int Sa | Outer part of a casing for a watch, where outer part is made of quasi-beta titanium alloy that is subjected to a hardening treatment comprising heating the alloy at a specified value, quenching and then tempering to obtain a hardness |
CN109946947A (en) * | 2019-05-08 | 2019-06-28 | 东莞得利钟表有限公司 | A kind of black titanium clock and watch gadget of high-strength corrosion-resistant and its manufacture craft |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4766408B2 (en) * | 2009-09-25 | 2011-09-07 | 日本発條株式会社 | Nanocrystalline titanium alloy and method for producing the same |
TWI565807B (en) * | 2016-04-08 | 2017-01-11 | 中國鋼鐵股份有限公司 | Method of producing titanium alloy bulk material and application thereof |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4902355A (en) * | 1987-08-31 | 1990-02-20 | Bohler Gesellschaft M.B.H. | Method of and a spray for manufacturing a titanium alloy |
EP0416929A1 (en) * | 1989-09-08 | 1991-03-13 | Seiko Instruments Inc. | Process for treating a titanium alloy or article made therefrom |
JPH03170649A (en) * | 1989-11-27 | 1991-07-24 | Mitsubishi Materials Corp | Method for forming polished specular surface in ti alloy member |
JPH0441656A (en) * | 1990-06-08 | 1992-02-12 | Nkk Corp | Mirror-finish polishing method for titanium material |
JPH06136498A (en) * | 1992-10-27 | 1994-05-17 | Seiko Instr Inc | Mirror finishing treatment for beta-type titanium alloy |
JPH0762466A (en) * | 1993-08-24 | 1995-03-07 | Seiko Instr Inc | Ornamental titanium alloy and its ornament |
EP0663453A1 (en) * | 1993-12-01 | 1995-07-19 | Orient Watch Co., Ltd. | Titanium alloy and method for production thereof |
EP0834586A1 (en) * | 1996-03-29 | 1998-04-08 | Kabushiki Kaisha Kobe Seiko Sho | High strength titanium alloy, product made therefrom and method for producing the same |
-
1998
- 1998-01-27 ES ES98900519T patent/ES2183317T3/en not_active Expired - Lifetime
- 1998-01-27 WO PCT/CH1998/000028 patent/WO1999037827A1/en not_active Application Discontinuation
- 1998-01-27 CA CA002318346A patent/CA2318346A1/en not_active Abandoned
- 1998-01-27 DE DE69809294T patent/DE69809294T2/en not_active Expired - Lifetime
- 1998-01-27 AU AU55473/98A patent/AU5547398A/en not_active Abandoned
- 1998-01-27 JP JP2000528732A patent/JP2002527611A/en active Pending
- 1998-01-27 EP EP98900519A patent/EP1051533B1/en not_active Expired - Lifetime
- 1998-01-27 KR KR1020007008141A patent/KR20010052152A/en not_active Application Discontinuation
-
1999
- 1999-01-22 TW TW088100988A patent/TW397940B/en not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4902355A (en) * | 1987-08-31 | 1990-02-20 | Bohler Gesellschaft M.B.H. | Method of and a spray for manufacturing a titanium alloy |
EP0416929A1 (en) * | 1989-09-08 | 1991-03-13 | Seiko Instruments Inc. | Process for treating a titanium alloy or article made therefrom |
JPH03170649A (en) * | 1989-11-27 | 1991-07-24 | Mitsubishi Materials Corp | Method for forming polished specular surface in ti alloy member |
JPH0441656A (en) * | 1990-06-08 | 1992-02-12 | Nkk Corp | Mirror-finish polishing method for titanium material |
JPH06136498A (en) * | 1992-10-27 | 1994-05-17 | Seiko Instr Inc | Mirror finishing treatment for beta-type titanium alloy |
JPH0762466A (en) * | 1993-08-24 | 1995-03-07 | Seiko Instr Inc | Ornamental titanium alloy and its ornament |
EP0663453A1 (en) * | 1993-12-01 | 1995-07-19 | Orient Watch Co., Ltd. | Titanium alloy and method for production thereof |
US5658403A (en) * | 1993-12-01 | 1997-08-19 | Orient Watch Co., Ltd. | Titanium alloy and method for production thereof |
EP0834586A1 (en) * | 1996-03-29 | 1998-04-08 | Kabushiki Kaisha Kobe Seiko Sho | High strength titanium alloy, product made therefrom and method for producing the same |
Non-Patent Citations (4)
Title |
---|
DATABASE WPI Section Ch Week 9518, Derwent World Patents Index; Class M26, AN 95-137246, XP002077552 * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 413 (C - 0877) 22 October 1991 (1991-10-22) * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 219 (C - 0943) 22 May 1992 (1992-05-22) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 448 (C - 1240) 22 August 1994 (1994-08-22) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1146136A1 (en) * | 1999-09-07 | 2001-10-17 | Citizen Watch Co. Ltd. | Ornament and method for preparation thereof |
EP1146136A4 (en) * | 1999-09-07 | 2006-09-06 | Citizen Watch Co Ltd | Ornament and method for preparation thereof |
KR100639132B1 (en) * | 2000-04-19 | 2006-10-27 | 시티즌 도케이 가부시키가이샤 | Substrate having hard decorative coating film and method for production thereof |
CH704233A1 (en) * | 2010-12-17 | 2012-06-29 | Richemont Int Sa | Outer part of a casing for a watch, where outer part is made of quasi-beta titanium alloy that is subjected to a hardening treatment comprising heating the alloy at a specified value, quenching and then tempering to obtain a hardness |
CN109946947A (en) * | 2019-05-08 | 2019-06-28 | 东莞得利钟表有限公司 | A kind of black titanium clock and watch gadget of high-strength corrosion-resistant and its manufacture craft |
Also Published As
Publication number | Publication date |
---|---|
KR20010052152A (en) | 2001-06-25 |
CA2318346A1 (en) | 1999-07-29 |
JP2002527611A (en) | 2002-08-27 |
TW397940B (en) | 2000-07-11 |
EP1051533A1 (en) | 2000-11-15 |
DE69809294T2 (en) | 2003-08-21 |
AU5547398A (en) | 1999-08-09 |
EP1051533B1 (en) | 2002-11-06 |
ES2183317T3 (en) | 2003-03-16 |
DE69809294D1 (en) | 2002-12-12 |
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