FIELD: metal working, possibly in different branches of industry for finishing and strengthening surfaces of parts. SUBSTANCE: part is immersed into non-perturbed clean liquid and it is subjected to treatment by means of jet of suspension of air, liquid and solid particles. Concentration of solid particles in jet significantly exceeds liquid concentration in part treatment zone. Solid particle deposited on bottom of chamber after impinging with part are continuously directed to ejector for reusing them at treating. Apparatus includes chamber 1 with liquid, ejector 2, treated part 3, taking up device 4, solid particles 5, flexible pipelines 6,7, spindle for rotating part, mechanism for moving ejector 9. Part 3 and ejector 2 are immersed into liquid. Method allows to enhance quality of surface layer of part. EFFECT: enhanced efficiency, enlarged manufacturing possibilities of jet treatment in liquid. 6 cl, 1 dwg
