METHOD OF ANTI-FRICTION STRENGTHENING TREATMENT OF INNER CYLINDER SURFACES Russian patent published in 2009 - IPC B24B39/02 C23C28/02 

FIELD: engineering industry.

SUBSTANCE: invention deals with engineering industry technology, namely with methods of anti-friction strengthening treatment of inner cylinder surfaces. Process tool with anti-friction bars and deforming elements is rotated and moved reciprocating. Coating application on part surface is performed by its rubbing with anti-friction bars and part surface deformation with coating by deforming elements in a form of balls and rollers. Coating application is performed with the help of suspension composed of fine powder and binding agent. Suspension is supplied by channels of process tool simultaneously with the beginning of deforming element operation. Deforming element radius is 1.5…2.0 mm. Hold down pressure of deforming elements towards processed surface is 160…500N. Rotation velocity of process tool is 20…40 m/min. Reciprocating movement speed of process tool is 10…20 m/min. Hold down pressure of anti-friction bars towards treated surface is 160…500N.

EFFECT: improvement of micro-hardness, increase of residual compressive stress and increase of processed part wearing resistance.

3 cl, 3 dwg, 1 tbl, 1 ex