METHOD FOR WORKING PARTS BY SURFACE PLASTIC DEFORMING Russian patent published in 2001 - IPC

FIELD: machine engineering, possibly surface hardening of machine parts. SUBSTANCE: method comprises steps of surface plastic deforming of parts at using pulsative deforming effort syncronous with electric current pulse frequency. Plastic deforming is realized at simultaneously applying alternating electric current to contact zone of working tool and part while tool and part are subjected to mutual rotation and simultaneously they are subjected to percussion impulses whose duration and frequency are equal to those of electric current pulses. Value of percussion impulse is determined according to given expression containing relation of area of static contact of tool to area of dynamic contact of pulsating tool, namely: Pdyn= Pst(Hdyn/Hst), where P dyn - value of percussion deforming effort; Pst - static deforming effort; Hdyn - plastic rigidity of metal at percussion action; H st - plastic rigidity of metal at static impression. EFFECT: enhanced efficiency of method due to improved strength properties of material and operational characteristics of the whole part. 1 dwg, 1 tbl