Patent ID: 9597748
Date: 2017-03-21
CPC Classifications: B23K,B23P,F01D,F04D,F05B,F05D

Claim:
1. An inertia friction welding (IFW) method for welding together two portions of a rotary subassembly for a turbine engine, at least one of which portions includes a plurality of hooked teeth at its periphery for anchoring blade roots, and wherein one of the two portions for welding together is held by a clamp and set into rotation by a motor, and the other one of the two portions for welding together is held by a torque take-up ring gear mounted on a carriage that is movable in translation, the method comprising: in order to avoid any crack formation in the hooks of said teeth during welding, covering said plurality of hooked teeth with damper means suitable for shifting a frequency of a vibratory response of said teeth created by said IFW, thereby creating damping.