TY JOUR TI THEORETICAL DEFINITION FOR QUALITY PARAMETERS OF SURFACE LAYER IN PARTS, TOOL-ELECTRODE WEAR AND PROCESS PRODUCTIVITY AT ELECTROEROSION MACHINING KW surface quality KW surface roughness KW surface corrugation KW residual stresses KW microhardness KW tool wear KW process productivity KW electro-erosion machining JO Bulletin of Bryansk state technical university AU Syanov , S.. PY 2016 IS 2016 PB Bryansk State Technical University