METHOD OF MAKING PART FROM METAL POWDER MATERIAL Russian patent published in 2019 - IPC B22F3/105 B33Y30/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a method of making parts from metal powder material using 3D printing techniques. Method of manufacturing part from metal powder material by layer-by-layer additive build-up of part includes production of first layer by application of metal powder material on platform, its alignment, compaction and laser treatment with pitch equal to 1–2 thickness of layer, obtaining second and subsequent layers by applying metal powder material on first and previous layers, respectively, its alignment, compaction and laser treatment with pitch equal to 1–2 thickness of layer. Second and subsequent layers after laser treatment are subjected to ultrasound surface hardening with frequency of ultrasonic vibrations of 38–42 kHz with a hard-alloy working tip of spherical shape with clamping force of 10–100 N.

EFFECT: higher cohesive strength of part along direction of formation of layers.

1 cl, 2 tbl, 1 ex, 1 dwg