Part for a timepiece movement

摘要

A metal pivot pin includes at least one pivot at at least one of its ends, and the metal is an austenitic steel, an austenitic cobalt alloy, or an austenitic nickel alloy in order to limit a sensitivity of the pin to magnetic fields. At least an outer surface of the at least one pivot is hardened to a predetermined depth relative to the rest of the pin in order to harden the at least one pivot.

主权项

1. A pivot pin for a timepiece movement, comprising:
at least one pivot at one or more ends of the pin, wherein the pin is formed of a metal that is an austenitic cobalt alloy or an austenitic nickel alloy so as to limit a sensitivity of the pin to magnetic fields, and at least an outer surface of said at least one pivot includes diffused atoms that harden the austenitic cobalt alloy or the austenitic nickel alloy of the outer surface to a predetermined depth relative to a core of the pin.