METHOD OF FORMING HARDENED SURFACE LAYER ON PARTS MADE FROM METAL ALLOYS AND COMPOSITE MATERIALS Russian patent published in 2003 - IPC

FIELD: metallurgy; improving operating properties of metal surfaces in transport industry and other industries. SUBSTANCE: proposed method includes creation of high-velocity plasma or gas flows and delivery of powder material. High- velocity plasma or gas flow and powder material are directed to surface at acute angle to exclude adhesion of powder material to surface being hardened and to ensure reflection of powder particles from surface to be hardened. EFFECT: required power requirements; avoidance of machining. 3 cl, 2 dwg