EP3736639B1 - Herstellungsverfahren einer spiralfeder für uhrwerk - Google Patents

Herstellungsverfahren einer spiralfeder für uhrwerk Download PDF

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Publication number
EP3736639B1
EP3736639B1 EP19173114.0A EP19173114A EP3736639B1 EP 3736639 B1 EP3736639 B1 EP 3736639B1 EP 19173114 A EP19173114 A EP 19173114A EP 3736639 B1 EP3736639 B1 EP 3736639B1
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EP
European Patent Office
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Application number
EP19173114.0A
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English (en)
French (fr)
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EP3736639A1 (de
Inventor
Christian Charbon
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.)
Nivarox Far SA
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Nivarox Far 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 Nivarox Far SA filed Critical Nivarox Far SA
Priority to EP19173114.0A priority Critical patent/EP3736639B1/de
Priority to EP21170773.2A priority patent/EP3889691B1/de
Priority to US16/831,913 priority patent/US11550263B2/en
Priority to JP2020068864A priority patent/JP2020183940A/ja
Priority to CN202010372078.1A priority patent/CN111913380B/zh
Priority to CN202411661811.6A priority patent/CN119472216A/zh
Publication of EP3736639A1 publication Critical patent/EP3736639A1/de
Application granted granted Critical
Publication of EP3736639B1 publication Critical patent/EP3736639B1/de
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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
    • 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
    • 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
    • C22F1/16—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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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
    • G04B17/063—Balance construction

Definitions

  • the invention relates to a method of manufacturing a spiral spring intended to equip a balance wheel with a watch movement. It also relates to the spiral spring resulting from this process made in an Nb-Hf alloy.
  • the invention relates to a method of manufacturing a spiral spring intended to equip a balance wheel with a watch movement and made from an alloy comprising niobium and hafnium.
  • the NbHf alloy blank used in the present invention does not include other elements with the exception of possible and inevitable traces. This makes it possible to avoid the formation of fragile phases.
  • the final heat treatment after strapping is carried out at a temperature between 500 and 1250°C for a time between 30 minutes and 30 hours.
  • a single-phase structure of centered cubic type or two-phase with a centered cubic structure and a compact hexagonal structure can be obtained at the end of this heat treatment.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Springs (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (6)

  1. Verfahren zum Herstellen einer Spiralfeder, die dazu bestimmt ist, eine Unruh eines Uhrwerks auszustatten, umfassend:
    - einen Schritt zum Ausarbeiten eines Rohwerks aus einer Niob- und Hafnium-Legierung, bestehend aus:
    - Niob: Ausgleich zu 100 Gew.-%,
    - Hafnium: zwischen 5 und 60 Gew.-%, vorzugsweise zwischen 5 und 30 Gew.-% und bevorzugter zwischen 8 und 12 Gew.-%,
    - einem oder mehreren Elementen, die aus Ti, Zr, Ta und W ausgewählt sind, mit einem Prozentsatz für jedes Element zwischen 0 und 2 Gew.-%, vorzugsweise zwischen 0,2 und 1,5 Gew.-%,
    - Verunreinigungen mit einem Gesamtprozentsatz zwischen 0 und 0,5 Gew.-%.
    - einen Schritt zum Ausglühen und Abkühlen des Rohwerks,
    - mindestens einen Schritt zum Verformen des ausgeglühten Rohwerks, um einen Draht zu bilden,
    - einen Schritt zum Aufwinden, um die Spiralfeder zu bilden,
    - einen Schritt zur abschließenden Wärmebehandlung der Spiralfeder, dadurch gekennzeichnet, dass es vor dem Schritt des Verformens einen Schritt des Abscheidens auf dem Rohwerk einer Schicht aus einem duktilen Werkstoff umfasst, der aus der Gruppe ausgewählt ist, die Kupfer, Nickel, Kupfernickel, Kupfermangan, Gold, Silber, Nickel-Phosphor Ni-P und Nickel-Bor Ni-B umfasst, um die Formgebung in Drahtform zu erleichtern, dadurch, dass die Dicke der abgeschiedenen Schicht aus duktilem Werkstoff gewählt ist, sodass das Verhältnis zwischen duktiler Werkstoffoberfläche/Legierungsoberfläche für einen gegebenen Drahtquerschnitt kleiner als 1, vorzugsweise kleiner als 0,5, und bevorzugter zwischen 0,01 und 0,4 liegt, und dadurch, dass es vor dem Schritt zum Aufwinden einen Schritt zum Entfernen der Schicht aus duktilem Werkstoff umfasst.
  2. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt zum Verformen durch Drahtziehen und/oder Walzen durchgeführt wird.
  3. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass es einen oder mehrere Verformungsschritte mit, für jeden Schritt, einer Verformung beinhaltet, der mit einem Verformungsgrad durchgeführt wird, der zwischen 1 und 5 liegt, wobei die Gesamtkumulierung der Verformungen über alle Schritte hinweg zu einem Gesamtverformungsgrad führt, der zwischen 1 und 14 liegt.
  4. Verfahren nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass es einen Schritt zum Ausglühen und Abkühlen zwischen den Verformungsschritten beinhaltet.
  5. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass jeder Schritt zum Ausglühen und Abkühlen eine Behandlung zum Lösungsglühen mit einer Dauer, die zwischen 5 Minuten und 2 Stunden liegt, bei einer Temperatur, die zwischen 650 °C und 1750 °C liegt, unter Vakuum ist, gefolgt von einem Abschrecken unter Gas oder durch natürliches Abkühlen unter Vakuum, um das Hf in übersättigter fester Lösung im Nb zu erhalten.
  6. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt zur abschließenden Wärmebehandlung für eine Dauer, die zwischen 30 Minuten und 30 Stunden liegt, bei einer Temperatur durchgeführt wird, die zwischen 500 °C und 1250 °C liegt.
EP19173114.0A 2019-05-07 2019-05-07 Herstellungsverfahren einer spiralfeder für uhrwerk Active EP3736639B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19173114.0A EP3736639B1 (de) 2019-05-07 2019-05-07 Herstellungsverfahren einer spiralfeder für uhrwerk
EP21170773.2A EP3889691B1 (de) 2019-05-07 2019-05-07 Uhrspiralfeder aus nb-hf-legierung
US16/831,913 US11550263B2 (en) 2019-05-07 2020-03-27 Method for manufacturing a balance spring for a horological movement
JP2020068864A JP2020183940A (ja) 2019-05-07 2020-04-07 計時器用ムーブメントのためのバランスばねを製造する方法
CN202010372078.1A CN111913380B (zh) 2019-05-07 2020-05-06 制造钟表机芯的游丝的方法
CN202411661811.6A CN119472216A (zh) 2019-05-07 2020-05-06 制造钟表机芯的游丝的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19173114.0A EP3736639B1 (de) 2019-05-07 2019-05-07 Herstellungsverfahren einer spiralfeder für uhrwerk

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP21170773.2A Division EP3889691B1 (de) 2019-05-07 2019-05-07 Uhrspiralfeder aus nb-hf-legierung
EP21170773.2A Division-Into EP3889691B1 (de) 2019-05-07 2019-05-07 Uhrspiralfeder aus nb-hf-legierung

Publications (2)

Publication Number Publication Date
EP3736639A1 EP3736639A1 (de) 2020-11-11
EP3736639B1 true EP3736639B1 (de) 2024-07-03

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP19173114.0A Active EP3736639B1 (de) 2019-05-07 2019-05-07 Herstellungsverfahren einer spiralfeder für uhrwerk
EP21170773.2A Active EP3889691B1 (de) 2019-05-07 2019-05-07 Uhrspiralfeder aus nb-hf-legierung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21170773.2A Active EP3889691B1 (de) 2019-05-07 2019-05-07 Uhrspiralfeder aus nb-hf-legierung

Country Status (4)

Country Link
US (1) US11550263B2 (de)
EP (2) EP3736639B1 (de)
JP (1) JP2020183940A (de)
CN (2) CN111913380B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4060425B1 (de) * 2021-03-16 2024-10-16 Nivarox-FAR S.A. Spiralfeder für uhrwerk
EP4060424B1 (de) * 2021-03-16 2024-11-20 Nivarox-FAR S.A. Spiralfeder für uhrwerk
EP4123393B1 (de) 2021-07-23 2025-04-16 Nivarox-FAR S.A. Spiralfeder für uhrwerk

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713924A2 (fr) * 2017-06-26 2018-12-28 Nivarox Sa Ressort spiralé d'horlogerie.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1521206A (fr) * 1966-06-08 1968-04-12 Vacuumschmelze Gmbh Procédé pour la préparation d'alliages non ferromagnétiques dont le coefficient de température du module d'élasticité est réglable, ainsi que les produits conformes à ceux obtenus par le présent procédé ou procédé similaire
DE69710445T2 (de) * 1997-06-20 2002-10-10 Manufacture Des Montres Rolex S.A., Biel/Bienne Selbstkompensierende Spiralfeder für mechanische Uhrwerkunruhspiralfederoszillator und Verfahren zu deren Herstellung
EP1039352B1 (de) * 1999-03-26 2003-10-08 Rolex Sa Selbstkompensierende Spiralfeder für Uhrwerkspiralfederunruh und Verfahren zur Behandlung derselben
DE60132878T2 (de) * 2001-05-18 2009-03-26 Rolex Sa Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ
JP2005140674A (ja) * 2003-11-07 2005-06-02 Seiko Epson Corp 時計用ばね、ぜんまい、ひげぜんまい、及び時計
WO2014006229A1 (fr) * 2012-07-06 2014-01-09 Rolex Sa Procédé de traitement d'une surface d'un composant horloger et composant horloger obtenu par un tel procédé
CN104603312B (zh) * 2012-08-31 2016-08-17 西铁城控股株式会社 机械式钟表用游丝材料和使用了它的游丝
EP3040790A1 (de) * 2014-12-29 2016-07-06 Montres Breguet S.A. Uhr oder Schmuckgegenstand aus einer leichten hochwertigen Legierung auf Titanbasis
EP3252542B1 (de) * 2016-06-01 2022-05-18 Rolex Sa Teil zur befestigung einer unruhspirale

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713924A2 (fr) * 2017-06-26 2018-12-28 Nivarox Sa Ressort spiralé d'horlogerie.

Also Published As

Publication number Publication date
JP2020183940A (ja) 2020-11-12
EP3889691A1 (de) 2021-10-06
CN111913380A (zh) 2020-11-10
US11550263B2 (en) 2023-01-10
US20200356057A1 (en) 2020-11-12
CN111913380B (zh) 2025-01-17
EP3736639A1 (de) 2020-11-11
CN119472216A (zh) 2025-02-18
EP3889691B1 (de) 2024-02-21

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