SPATTER REDUCTION LASER SCANNING STRATEGY IN SELECTIVE LASER MELTING

摘要

An additive manufacturing system wherein a gentle sintering run on heat-fusible particles is followed closely by a selective laser melting run. The laser sintering run slightly sinters the particles and causes the particles to adhere to each other, but not necessarily deform and lose their original shape. The particles become connected via bridges between each other, which holds them in place. During the laser melting run, the powder melts in place, with minimum particle ejection or mobility, since the particles form a network of connected particles.

主权项

1. An additive manufacturing apparatus, comprising:
a target surface, heat-fusible powder particles at said target surface, an energetic beam source for producing a sintering run on said heat-fusible powder particles, and an energetic beam source for producing a melting run on said heat-fusible powder particles.