VIDEO STRESSONIC®

Sonats developed the STRESSONIC ® process

How does it work?
1 ) A generator send a 20 KHz electric current to a piezoelectric which converts it in mechanical wave.
2) The piezo then vibrates to a low amplitude.
3) This amplitude is increased thanks to several acoustic parts, up to the last part of the stack: the sonotrode which is designed to vibrate homogeneously on the whole surface.
4) Balls or shots get their energy out of surface of this sonotrode.
5) By creating a housing between the part to treat and the sonotrode, shots remain in this housing during all the treatment.

MANY APPLICATIONS
We can imagine applications on several types of parts with many configurations (automated, in situ, in production line…).
In the treatment housing, balls act as a gas which generates homogeneous treatments on the area to treat but also give access to difficult areas.
Since the velocity is lower than in classical shot peening, we compensate by increasing the shot‘s mass.

We use bearing balls (and not classical shots) with diameters going from 0, 7 to 3mm.

The use of high quality shots linked to treatment parameters control in real time, ensures a reproducible treatment quality (residual stresses, roughness).