METHOD OF PRODUCING METAL PART BY SELECTIVE MELTING OF POWDER Russian patent published in 2016 - IPC B22F3/105 

FIELD: technological processes; machine building.

SUBSTANCE: invention relates to production of turbomachine blades (17) by selectively melting powder (2). Method comprises building up layer by layer on plate (6) and simultaneously with blades (17) and at least one holder and support element (21, 22) for said blade, element (21, 22) being spaced apart from blade (17) and being separated therefrom by gap (23) filled with non-melted powder (2). After complete manufacturing blades (17), removing at least partially powder (2) remaining in gap (23) between blade (17) and element (21, 22), and blade (17) from plate (6). Distance d between holder and support element (21, 22) and blade (17) is defined for preset roughness, produced from curve of roughness versus distance d for a given type of powder and preset angle α of surface of trough blades relative to vertical.

EFFECT: ensuring homogeneity of roughness of blade.

11 cl, 5 dwg