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Timepiece spiral spring made of titanium

A technology of spiral springs and watch springs, applied in the field of spiral watch springs, mainsprings or hairsprings, energy storage springs, oscillator springs, manufacturing spiral watch springs, and can solve problems such as manufacturing difficulties

Active Publication Date: 2020-06-30
NIVAROX FAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] -Settings at the ends: core hooks and slide springs, with local weaknesses and manufacturing difficulties

Method used

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  • Timepiece spiral spring made of titanium
  • Timepiece spiral spring made of titanium
  • Timepiece spiral spring made of titanium

Examples

Experimental program
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Embodiment Construction

[0021] The invention relates to a helical clock spring with a two-phase structure.

[0022] According to the invention, the material of the helical spring is a titanium-based binary alloy containing niobium.

[0023] In an advantageous variant embodiment, the alloy comprises:

[0024] - niobium: to 100% balance;

[0025] - Titanium whose mass proportion is strictly greater than 60.0% of the total and less than or equal to 85.0% of the total,

[0026] - other trace components from O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, each of which constitutes 0-1600 mass ppm of the total, and The sum of these trace amounts is less than or equal to 0.3% by mass.

[0027] More particularly, the alloy contains titanium in a mass proportion greater than or equal to 65.0% and less than or equal to 85.0% of the total.

[0028] More particularly, the alloy contains titanium in a mass proportion greater than or equal to 70.0% and less than or equal to 85.0% of the total. Still more particularly, in...

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Abstract

The invention relates to a timepiece spiral spring made of titanium. The invention provides a spiral clock spring having a two-phase structure and made from niobium and titanium alloy, and a method ofmaking said spring, including: -production of binary alloy containing niobium and titanium, with content of niobium: residue up to 100 %, weight ratio of titanium strictly greater than or equal to 60.0 % of total amount and less than or equal to 85.0 % of total amount, trace amounts of components from O, H, C, Fe, Ta, N, Ni, Si, Cu, Al in range of 0 to 1,600 ppm (wt) of total amount and less than0.3 wt% in combination; -use of deformations alternating with thermal treatments, up to obtaining a two-phase microstructure containing a solid solution of niobium with titanium in form of beta-phaseand solid solution of niobium with titanium in form of alpha-phase, wherein content of titanium in form alpha-phase is more than 10 vol%; -wire drawing to produce a wire capable of calendering; -calendering or insertion into a ring to produce a running spring with a profile of a treble clef before its first coiling or coiling to produce a balancing spring.

Description

technical field [0001] The invention relates to a helical clock spring, in particular a mainspring or balance spring, having a two-phase structure. [0002] The invention also relates to a method for producing a helical clockspring. [0003] The invention relates to the field of manufacture of timepiece springs, in particular springs with stored energy, such as springs or motor springs or striking-work springs, or oscillator springs, such as balance springs. Background technique [0004] The manufacture of energy storage springs for timepieces is subject to various constraints that often seem incompatible at first glance: [0005] - the need to obtain a very high elastic limit, [0006] - the need to obtain a low modulus of elasticity, [0007] - easy to manufacture, especially easy to draw, [0008] - excellent fatigue resistance, [0009] - durability, [0010] - small cross section, [0011] -Settings of the ends: core hooks and slide springs, with local weaknesses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/18C22F1/02G04B1/14G04B17/06
CPCC22C14/00C22F1/183C22F1/02C22F1/002G04B1/145G04B17/066G04B17/227G04B17/06B21C1/02C22C27/02
Inventor C.查尔邦
Owner NIVAROX FAR