METHOD FOR ULTRASONIC GRINDING OF DIAMOND FILMS HAVING OUTER LAYER OF POLYCRYSTALLINE DIAMONDS ON SURFACE OF BASE Russian patent published in 2017 - IPC B24B1/04 B06B3/00 

FIELD: technological processes.

SUBSTANCE: removing crystallites of said outer layer by exposing them to ultrasonic radiator to form a recorded roughness of the outer layer. The ultrasonic radiator has a planar radiating end surface of Ti₃Al intermetallide. The action of ultrasonic radiator on the crystallites is carried out in a bath through the flow of suspension supplied between said radiating surface and the surface of the base of the suspension, in the cavitation mode with provision of microchipping of crystallites of the base outer layer. The oscillation amplitude A of the ultrasonic radiator is chosen A=(2-8) Ra, and the size in diamond grain in suspension is equal to B=3A, where Ra is initial roughness of the base outer layer.

EFFECT: increased productivity and quality of diamond surface grinding.

6 cl, 8 dwg, 1 tbl