Micro shoot-peening
The micro shot-peening treatment is performed to prepare the surface either for subsequent treatments or coatings or as a finishing, as with stainless steel surfaces.
Micro shot-peening is needed to make the surface homogeneous with the removal of about 1 micron of material and create a lightly rough surface, such as to favor the anchorage of the nickel layer with consequent improvement in terms of adherence of the deposit.