Method of welding a nickel strength lug with a bronze connecting pin and a brass contact ring in an accelerometer sensor

A method of welding a nickel strength lug (1) with a bronze connecting pin (2) and a brass contact ring (3) in an accelerometer sensor (8), the nickel strength lug (1) being interleaved between the bronze connecting pin (2) and the brass contact ring (3), the method comprising a step of:

• welding, electrically, the nickel strength lug (1) with the bronze connecting pin (2) and the brass contact ring (3), with the nickel strength lug (1) pressed simultaneously against the bronze connecting pin (2) and the brass contact ring (3),
• wherein, before the step of welding, an external surface of the nickel strength lug (1) undergoes surface deformation at least on each of two portions (7) of the external surface that face, respectively, the bronze connecting pin (2) and the brass contact ring (3), the surface deformation creating, on each of said two portions, asperities (4) intended to come into local contact with the bronze connecting pin (2) and the brass contact ring (3), respectively.