EP3671359A1 - Spiralfeder eines uhrwerks auf titanbasis - Google Patents
Spiralfeder eines uhrwerks auf titanbasis Download PDFInfo
- Publication number
- EP3671359A1 EP3671359A1 EP18215265.2A EP18215265A EP3671359A1 EP 3671359 A1 EP3671359 A1 EP 3671359A1 EP 18215265 A EP18215265 A EP 18215265A EP 3671359 A1 EP3671359 A1 EP 3671359A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- titanium
- spiral spring
- total
- phase
- niobium
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000010936 titanium Substances 0.000 title claims abstract description 56
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 54
- 239000010955 niobium Substances 0.000 claims abstract description 38
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 37
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000006104 solid solution Substances 0.000 claims abstract description 15
- 238000003490 calendering Methods 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000009825 accumulation Methods 0.000 claims abstract 2
- 229910045601 alloy Inorganic materials 0.000 claims description 38
- 239000000956 alloy Substances 0.000 claims description 38
- 238000001556 precipitation Methods 0.000 claims description 31
- 238000011282 treatment Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000002344 surface layer Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 2
- 229910018104 Ni-P Inorganic materials 0.000 claims description 2
- 229910018536 Ni—P Inorganic materials 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- QDWJUBJKEHXSMT-UHFFFAOYSA-N boranylidynenickel Chemical compound [Ni]#B QDWJUBJKEHXSMT-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 230000002045 lasting effect Effects 0.000 claims 3
- 238000005491 wire drawing Methods 0.000 abstract description 2
- 229910001257 Nb alloy Inorganic materials 0.000 abstract 1
- 229910001069 Ti alloy Inorganic materials 0.000 abstract 1
- 229910002056 binary alloy Inorganic materials 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910001275 Niobium-titanium Inorganic materials 0.000 description 4
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000942 Elinvar Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical class [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000012550 audit Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/14—Mainsprings; Bridles therefor
- G04B1/145—Composition and manufacture of the springs
-
- 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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium 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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/066—Manufacture of the spiral spring
-
- 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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
- G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used
Definitions
- the invention relates to a clockwork spiral spring, in particular a barrel spring or a spiral spring, with a two-phase structure.
- the invention also relates to a method of manufacturing a clockwork spiral spring.
- the invention relates to the field of the manufacture of clock springs, in particular energy storage springs, such as barrel springs or coil or engine springs, or oscillator springs, such as springs.
- the invention proposes to define a new type of spiral clockwork spring, based on the selection of a particular material, and to develop the appropriate manufacturing process.
- the invention relates to a spiral clockwork spring with two-phase structure, according to claim 1.
- the invention also relates to a method of manufacturing such a clockwork spiral spring, according to claim 10.
- the invention relates to a clockwork spiral spring with a two-phase structure.
- the material of this spiral spring is a binary type alloy based on titanium, comprising niobium.
- this alloy comprises a proportion by mass of titanium greater than or equal to 65.0% of the total and less than or equal to 85.0% of the total.
- this alloy comprises a proportion by mass of titanium greater than or equal to 70.0% of the total and less than or equal to 85.0% of the total.
- this alloy comprises a proportion by mass of titanium greater than or equal to 70.0% of the total and less than or equal to 75.0% of the total.
- this alloy comprises a proportion by mass of titanium strictly greater than 76.0% of the total and less than or equal to 85.0% of the total.
- this alloy comprises a proportion by mass of titanium less than or equal to 80.0% of the total.
- this alloy comprises a proportion by mass of titanium strictly greater than 76.0% of the total and less than or equal to 78.0% of the total.
- this spiral spring has a two-phase microstructure comprising centered cubic niobium beta and compact hexagonal alpha titanium. More particularly, this spiral spring has a two-phase microstructure comprising a solid solution of niobium with titanium in ⁇ phase (centered cubic structure) and a solid solution of niobium with titanium in ⁇ phase (compact hexagonal structure), the titanium content in phase ⁇ being greater than 10% by volume.
- the total of the proportions by mass of titanium and of niobium is between 99.7% and 100% of the total.
- the proportion by mass of oxygen is less than or equal to 0.10% of the total, or even less than or equal to 0.085% of the total.
- the proportion by mass of tantalum is less than or equal to 0.10% of the total.
- the proportion by mass of carbon is less than or equal to 0.04% of the total, in particular less than or equal to 0.020% of the total, or even less than or equal to 0.0175% of the total.
- the proportion by mass of iron is less than or equal to 0.03% of the total, in particular less than or equal to 0.025% of the total, or even less than or equal to 0.020% of the total.
- the proportion by mass of nitrogen is less than or equal to 0.02% of the total, in particular less than or equal to 0.015% of the total, or even less than or equal to 0.0075% of the total.
- the proportion by mass of hydrogen is less than or equal to 0.01% of the total, in particular less than or equal to 0.0035% of the total, or even less than or equal to 0.0005% of the total.
- the proportion by mass of nickel is less than or equal to 0.01% of the total.
- the mass proportion of silicon is less than or equal to 0.01% of the total.
- the proportion by mass of nickel is less than or equal to 0.01% of the total, in particular less than or equal to 0.16% of the total.
- the proportion by mass of ductile material or copper is less than or equal to 0.01% of the total, in particular less than or equal to 0.005% of the total.
- the proportion by mass of aluminum is less than or equal to 0.01% of the total.
- This spiral spring has an elastic limit greater than or equal to 1000 MPa. More particularly, the spiral spring has an elastic limit greater than or equal to 1500 MPa.
- the spiral spring has an elastic limit greater than or equal to 2000 MPa.
- this spiral spring has a modulus of elasticity greater than 60 GPa and less than or equal to 80 GPa.
- the alloy thus determined allows, depending on the treatment applied during preparation, the production of spiral springs which are spiral springs with an elastic limit greater than or equal to 1000 MPa, or barrel springs, in particular when the elastic limit greater than or equal to 1500 MPa.
- the application to a balance spring requires properties capable of guaranteeing the maintenance of chronometric performance despite the variation in the temperatures of use of a watch incorporating such a balance spring.
- the thermoelastic coefficient, also called CTE of the alloy is therefore of great importance.
- the hardened beta phase alloy has a strongly positive CTE, and the precipitation of the alpha phase which has a strongly negative CTE, makes it possible to bring the two-phase alloy to a CTE close to zero, which is particularly favorable.
- a CTE of +/- 10 ppm / ° C must be reached.
- M and T are respectively the walking and the temperature.
- E is the Young's modulus of the balance spring, and, in this formula, E, ⁇ and ⁇ are expressed in ° C -1 .
- CT is the thermal coefficient of the oscillator, (1 / E. DE / dT) is the CTE of the balance spring, ⁇ is the coefficient of expansion of the balance and ⁇ that of the balance spring.
- this alloy of coupled sequences 20 of deformation-precipitation heat treatment comprising the application of deformations (21) alternating with heat treatments (22), until obtaining a two-phase microstructure comprising a solid solution of niobium with titanium in the ⁇ phase and a solid solution of niobium with titanium in the a phase, the content of titanium in the ⁇ phase being greater than 10% by volume, with an elastic limit greater than or equal to 2000 MPa.
- the treatment cycle then previously comprises a beta quenching (15) at a given diameter, so that the entire structure of the alloy is beta, then a succession of these coupled sequences of deformation-thermal precipitation treatment .
- each deformation is carried out with a given deformation rate between 1 and 5, this deformation rate corresponding to the conventional formula 2ln (d0 / d), where d0 is the diameter of the last beta quench, and where d is the diameter of the work hardened wire.
- the total cumulative deformation over the whole of this succession of phases leads to a total rate of deformation of between 1 and 14.
- Each coupled sequence of deformation-thermal precipitation treatment includes, each time, a thermal treatment of phase precipitation alpha Ti (300-700 ° C, 1h-30h).
- This variant of the process comprising a beta quenching is particularly suitable for the production of barrel springs. More particularly, this beta quenching is a solution treatment, with a duration of between 5 minutes and 2 hours at a temperature between 700 ° C and 1000 ° C, under vacuum, followed by cooling under gas.
- this beta quenching is a solution treatment, with 1 hour at 800 ° C. under vacuum, followed by cooling under gas.
- each coupled sequence of deformation-heat treatment of precipitation comprises a precipitation treatment of a duration a precipitation treatment of a duration between 1 hour and 80 hours at a temperature between 350 ° C and 700 ° C. More particularly, the duration is between 1 hour and 10 hours at a temperature between 380 ° C and 650 ° C. More particularly still, the duration is from 1 hour to 12 hours, at a temperature of 380 ° C.
- long heat treatments are applied, for example heat treatments carried out for a period of between 15 hours and 75 hours at a temperature between 350 ° C and 500 ° C. For example, heat treatments are applied from 75h to 400h at 350 ° C, from 25h to 400 ° C or from 18h to 480 ° C.
- the method comprises between one and five, preferably three to five, coupled sequences of deformation-precipitation heat treatment.
- the first coupled deformation-heat precipitation precipitation sequence comprises a first deformation with at least 30% reduction in section.
- each coupled sequence of deformation-heat treatment of precipitation comprises a deformation between two heat treatments of precipitation with at least 25% reduction in section.
- a surface layer of ductile material taken from copper, nickel, cupro-nickel, cupro is added to the blank.
- -manganese, gold, silver, nickel-phosphorus Ni-P and nickel-boron Ni-B, or the like to facilitate the shaping of wire by drawing and drawing and rolling.
- the wire is stripped of its layer of ductile material , in particular by chemical attack, in a step 50.
- the barrel spring it is indeed possible to carry out the manufacturing by ring setting and heat treatment, where the ring setting replaces the calendering.
- the barrel spring is still generally heat treated after ringing or calendering.
- a spiral spring is, in general, still heat treated after bending.
- the last deformation phase is carried out in the form of a flat rolling, and the last heat treatment is carried out on the calendered or ringed or flat-wound spring. More particularly, after the drawing, the wire is rolled flat, before the manufacture of the spring proper by calendering or slacking or ringing.
- the surface layer of ductile material is deposited so as to constitute a spiral spring whose pitch is not a multiple of the thickness of the blade.
- the surface layer of ductile material is deposited so as to constitute a spring whose pitch is variable.
- ductile or copper material is thus added at a given time to facilitate the shaping of the wire by drawing and drawing, so that there remains a thickness of 10 to 500 micrometers on the wire with a final diameter of 0.3 to 1 millimeters.
- the wire is stripped of its layer of ductile material or copper in particular by chemical attack, then is rolled flat before the manufacture of the spring itself.
- ductile or copper material can be galvanic or mechanical, it is then a jacket or a tube of ductile or copper material which is adjusted on a bar of niobium-titanium alloy to a large diameter, then which is thinned during the stages of deformation of the composite bar.
- the removal of the layer is in particular achievable by chemical attack, with a solution based on cyanides or based on acids, for example nitric acid.
- the invention thus makes it possible, in particular, to produce a spiral barrel spring made of an alloy of the niobium-titanium type, typically more than 60% by mass of titanium.
- a very fine lamellar two-phase microstructure comprising a solid solution of niobium with titanium in ⁇ phase and a solid solution of niobium with titanium in phase a, the content of titanium in phase ⁇ being greater than 10% by volume.
- This alloy combines a very high elastic limit, greater than at least 1000 MPa, or greater than 1500 MPa, or even 2000 MPa on wire, and a very low elastic modulus, of the order of 60 Gpa to 80 GPa. This combination of properties is well suited for a barrel spring or balance spring.
- This niobium-titanium type alloy can easily be covered with ductile or copper material, which greatly facilitates its deformation by wire drawing.
- Such an alloy is known and used for the manufacture of superconductors, such as magnetic resonance imaging devices, or particle accelerators), but is not used in watchmaking. Its fine, two-phase microstructure is sought after in the case of superconductors for physical reasons and has the welcome side effect of improving the mechanical properties of the alloy.
- Such an alloy is particularly suitable for the production of a barrel spring, and also for the production of spiral springs.
- a binary type alloy comprising niobium and titanium, of the type selected above for the implementation of the invention, is also capable of being used as spiral wire, it has an effect similar to that of " Elinvar ", with a practically zero thermo-elastic coefficient in the temperature range of usual watch use, and suitable for the manufacture of self-compensating hairsprings, in particular for niobium-titanium alloys with a higher proportion by mass of titanium at 60% and up to 85%.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18215265.2A EP3671359B1 (de) | 2018-12-21 | 2018-12-21 | Herstellungsverfahren einer spiralfeder eines uhrwerks auf titanbasis |
US16/693,481 US11650543B2 (en) | 2018-12-21 | 2019-11-25 | Titanium-based spiral timepiece spring |
JP2019212905A JP6954978B2 (ja) | 2018-12-21 | 2019-11-26 | チタンベースの渦巻き計時器ぜんまい |
KR1020190163654A KR102320621B1 (ko) | 2018-12-21 | 2019-12-10 | 티타늄 기반 나선형 타임피스 스프링 |
RU2019142569A RU2727354C1 (ru) | 2018-12-21 | 2019-12-19 | Спиральная часовая пружина на титановой основе |
CN201911326726.3A CN111349814B (zh) | 2018-12-21 | 2019-12-20 | 钛基螺旋钟表弹簧 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18215265.2A EP3671359B1 (de) | 2018-12-21 | 2018-12-21 | Herstellungsverfahren einer spiralfeder eines uhrwerks auf titanbasis |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3671359A1 true EP3671359A1 (de) | 2020-06-24 |
EP3671359B1 EP3671359B1 (de) | 2023-04-26 |
Family
ID=64900770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18215265.2A Active EP3671359B1 (de) | 2018-12-21 | 2018-12-21 | Herstellungsverfahren einer spiralfeder eines uhrwerks auf titanbasis |
Country Status (6)
Country | Link |
---|---|
US (1) | US11650543B2 (de) |
EP (1) | EP3671359B1 (de) |
JP (1) | JP6954978B2 (de) |
KR (1) | KR102320621B1 (de) |
CN (1) | CN111349814B (de) |
RU (1) | RU2727354C1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD959241S1 (en) * | 2020-12-21 | 2022-08-02 | Time4Machine Inc. | Spring for a construction toy |
EP4060425A1 (de) | 2021-03-16 | 2022-09-21 | Nivarox-FAR S.A. | Spiralfeder für uhrwerk |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1166701A (en) * | 1966-06-08 | 1969-10-08 | Vacuumschmelze Gmbh | Improvements in or relating to Non-Ferromagnetic Alloys |
JPS52147511A (en) * | 1976-06-02 | 1977-12-08 | Furukawa Electric Co Ltd:The | Anticorrosive high strength neobium alloy and its production |
EP1083243A2 (de) * | 1999-09-10 | 2001-03-14 | Terumo Corporation | Draht aus Beta-Titan-Legierung, Verfahren zur ihrer Herstellung sowie ihrer Verwendung für medizinische Vorrichtungen |
EP1114876A1 (de) * | 1999-06-11 | 2001-07-11 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Titanlegierung und verfahren zu deren herstellung |
EP1258786A1 (de) * | 2001-05-18 | 2002-11-20 | Montres Rolex Sa | Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ |
WO2005045532A2 (en) * | 2003-11-07 | 2005-05-19 | Seiko Epson Corporation | Timepiece and mainspring |
EP2696381A1 (de) * | 2012-08-08 | 2014-02-12 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Auf Niob-Titan basierter supraleitender Draht |
WO2015189278A2 (fr) * | 2014-06-11 | 2015-12-17 | Cartier Création Studio Sa | Oscillateur pour un ensemble de balancier-spiral d'une pièce d'horlogerie |
FR3064281A1 (fr) * | 2017-03-24 | 2018-09-28 | Universite De Lorraine | Alliage de titane beta metastable, ressort d'horlogerie a base d'un tel alliage et son procede de fabrication |
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EP0484931B1 (de) * | 1990-11-09 | 1998-01-14 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Titanlegierung aus Sinterpulver und Verfahren zu deren Herstellung |
JP2002332531A (ja) * | 1999-06-11 | 2002-11-22 | Toyota Central Res & Dev Lab Inc | チタン合金およびその製造方法 |
US6918974B2 (en) * | 2002-08-26 | 2005-07-19 | General Electric Company | Processing of alpha-beta titanium alloy workpieces for good ultrasonic inspectability |
US8337750B2 (en) * | 2005-09-13 | 2012-12-25 | Ati Properties, Inc. | Titanium alloys including increased oxygen content and exhibiting improved mechanical properties |
CN102713770B (zh) | 2009-12-09 | 2015-11-25 | 劳力士有限公司 | 用于制造钟表用弹簧的方法 |
US20120076686A1 (en) * | 2010-09-23 | 2012-03-29 | Ati Properties, Inc. | High strength alpha/beta titanium alloy |
EP2891724B1 (de) | 2012-08-31 | 2018-07-04 | Citizen Watch Co., Ltd. | Unruhfedermaterial für eine mechanische uhr und unruhfeder damit |
RU2525003C1 (ru) * | 2013-08-07 | 2014-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "МАТИ-Российский государственный технологический университет имени К.Э. Циолковского" (МАТИ) | Сплав на основе алюминида титана и способ обработки заготовок из него |
-
2018
- 2018-12-21 EP EP18215265.2A patent/EP3671359B1/de active Active
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2019
- 2019-11-25 US US16/693,481 patent/US11650543B2/en active Active
- 2019-11-26 JP JP2019212905A patent/JP6954978B2/ja active Active
- 2019-12-10 KR KR1020190163654A patent/KR102320621B1/ko active IP Right Grant
- 2019-12-19 RU RU2019142569A patent/RU2727354C1/ru active
- 2019-12-20 CN CN201911326726.3A patent/CN111349814B/zh active Active
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GB1166701A (en) * | 1966-06-08 | 1969-10-08 | Vacuumschmelze Gmbh | Improvements in or relating to Non-Ferromagnetic Alloys |
JPS52147511A (en) * | 1976-06-02 | 1977-12-08 | Furukawa Electric Co Ltd:The | Anticorrosive high strength neobium alloy and its production |
EP1114876A1 (de) * | 1999-06-11 | 2001-07-11 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Titanlegierung und verfahren zu deren herstellung |
EP1083243A2 (de) * | 1999-09-10 | 2001-03-14 | Terumo Corporation | Draht aus Beta-Titan-Legierung, Verfahren zur ihrer Herstellung sowie ihrer Verwendung für medizinische Vorrichtungen |
EP1258786A1 (de) * | 2001-05-18 | 2002-11-20 | Montres Rolex Sa | Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ |
WO2005045532A2 (en) * | 2003-11-07 | 2005-05-19 | Seiko Epson Corporation | Timepiece and mainspring |
EP2696381A1 (de) * | 2012-08-08 | 2014-02-12 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Auf Niob-Titan basierter supraleitender Draht |
WO2015189278A2 (fr) * | 2014-06-11 | 2015-12-17 | Cartier Création Studio Sa | Oscillateur pour un ensemble de balancier-spiral d'une pièce d'horlogerie |
FR3064281A1 (fr) * | 2017-03-24 | 2018-09-28 | Universite De Lorraine | Alliage de titane beta metastable, ressort d'horlogerie a base d'un tel alliage et son procede de fabrication |
Also Published As
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US20200201254A1 (en) | 2020-06-25 |
KR20200079188A (ko) | 2020-07-02 |
CN111349814A (zh) | 2020-06-30 |
KR102320621B1 (ko) | 2021-11-02 |
EP3671359B1 (de) | 2023-04-26 |
CN111349814B (zh) | 2022-05-24 |
US11650543B2 (en) | 2023-05-16 |
JP6954978B2 (ja) | 2021-10-27 |
JP2020101527A (ja) | 2020-07-02 |
RU2727354C1 (ru) | 2020-07-21 |
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