レーザー粉末床溶融結合法における材料粉末粒径が表面粗さに及ぼす影響

抄録

Additive manufacturing (AM) is a technology that enables the molding of complex shapes from 3D data. Laser powder bed fusion (L-PBF) is one of the AM techniques for manufacturing metal parts. The purpose of this study is to investigate how varying the particle diameter of the material powder affects the surface roughness of the side skins of parts produced by L-PBF. Specimens of different materials were incorporated using stainless steel and maraging steel. The specimens were conducted with twice contour passes. The surface roughness of the specimen side skin was measured in the laser energy density on 1.0, 1.5, 2.0 and 2.5 J / mm2 of the second offset contour path. Results showed that average roughness tended to decrease with contour energy density for both specimens of different species. There was no difference in the average surface roughness for both specimens of different species. However, the specimens made of stainless steel had fewer voids observed in the contours of the specimens than the specimens made of maraging steel.