FIELD: process engineering.
SUBSTANCE: invention relates to powder metallurgy, particularly, to production of 3D powder articles by selective laser sintering. Ply of various powder materials is applied to perform sintering or melting of preset area of every ply. Selective laser sintering or melting is performed by synchronous scanning of powder ply surface by laser source with small focusing spot and several other sources of concentrated energy flow with radiation spot of larger sizes. Laser scans the surface in the boundaries of radiation spots of the other sources. Device comprises working chamber, laser optically communicated with telescope and laser scanning and focusing system composed by galvanic scanner with lens, working bin with piston displacing powder ply and article in vertical direction, feed bin, powder filling and laying carriage. Gimbal mounts support two scanning sources of electron beam or bulb heating sources, or microwave radiation sources to make laser radiation scanning area aligned with area of electron beam action on the surface.
EFFECT: higher quality of articles and process efficiency.
4 cl, 4 dwg
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