ELECTRIC SPARK ALLOYING METHOD Russian patent published in 2003 - IPC

FIELD: applying of coatings by electric spark processes. SUBSTANCE: method comprises steps of rotating tool-electrode around its axis and inclining it by angle 30 - 40 degrees relative to surface of worked part; sharpening end of tool-electrode by angle 60 - 90 degrees; supplying inert gas into interelectrode gap; maintaining constant value of interelectrode gap due to using automatic servosystem; imparting reciprocation motion to tool-electrode; rotating worked part around its axis. EFFECT: possibility for applying compact uniform coating onto hard-to-reach inner surfaces of articles. 1 dwg