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1. (WO2018122523) DEVICE AND METHOD FOR TREATING A METAL PART

Pub. No.:    WO/2018/122523    International Application No.:    PCT/FR2017/053837
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 23 00:59:59 CET 2017
IPC: B24C 1/10
B24C 1/08
B24C 5/00
B24B 1/04
Applicants: SAFRAN AIRCRAFT ENGINES
Inventors: MORANCAIS, Amélie
BESSON, Laurianne
DANG, Nathalie
SOK, Christian
Title: DEVICE AND METHOD FOR TREATING A METAL PART
Abstract:
The invention concerns a device (100) for treating a metal part (1) having an outer surface (1-1), comprising: - a chamber (11), - a vibration module (12) comprising: ▪ a generator (12-1) for generating an electric signal at ultrasonic frequency, ▪ a converter (12-2) for converting said electric signal into a mechanical vibration, said mechanical vibration being transmitted to a sonotrode (12-4), ▪ the sonotrode (12-4) positioned in said chamber facing the outer surface of the metal part, - projectiles (13) positioned inside the chamber for impacting against the outer surface of the metal part, said projectiles being moved by the vibration of the sonotrode and comprising a plurality of abrasive media which, when moved by the vibration of the sonotrode, introduce residual compressive stresses and improve the surface condition of the metal part.