SPIRAL SPRING FOR CLOCK Russian patent published in 2021 - IPC G04B1/14 C22C14/00 C22C27/02 

FIELD: clockwork mechanisms.

SUBSTANCE: invention relates to a spiral spring for the clock with a two-phase structure made of a niobium and titanium alloy and to a method for manufacturing this spring, including the following: a two-component alloy containing niobium and titanium is produced, while the alloy contains from 45.0% to 48.0% of titanium by weight relatively to the total weight, niobium is the rest up to 100%, as well as traces of components of O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, while each component is contained in the amount from 0 to 1600 particles per million by weight relatively to the total weight, and these components are less than 0.3% by weight in total; deformations alternating with heat processing are used until the production of a two-phase microstructure containing a solid solution of niobium with β-phase titanium and a solid solution of niobium with α-phase titanium, while the content of α-phase titanium is more than 10% by volume, the elasticity limit is more than 1000 MPa, and the elasticity module is more than 60 GPa and less than 80 GPa; wire is stretched in order to obtain wire that can be subjected to calendering; calendering and wounding are performed.

EFFECT: obtaining a spiral spring for the clock.

22 cl, 3 dwg