Ultrasonic impact surface finishing is combined with ultrasonic technology, and made use of the feature that metal atoms movement accur at high energies and temperatures, the grinding machine puts high frequency drivers on metal surface, thus can extrude and finish metal surface. After extruding and finishing machining exerted by ultrasonic technology, the metal surface roughness minished and the metal surface layer strengthened.

2. Advantages of ultrasonic impact surface finishing
-Increase the surface finish quality(about 3 classes, low to 0.1Ra).
-Increase the surface hardness.
-Improve the fatigue resistance and corrosion resistance.
-Decrease the initial damage of workpiece.
-Remove spot pits on the metal surface.
-Special purpose metalworking machines, chipless

3. Application
Ultrasonic impact surface finishing is applied in a large number of industries, such as aircraft, automobile, bridge, mechanical spare part processing, oil pipeline, railway, watercraft and other areas. The detailed aspects are as followed.
Stick and pipe
Plane
Bore
Thin-wall Bush Parts
Saw-tooth components
Gear components
Bearing (both inside and outside circle)
Transition zone of arc