RESEARCH OF ORIENTATION OF THE MODEL AND SCANNING SPEED TO THE RESULTING SURFACE ROUGHNESS IN THE SELECTIVE LASER MELTING TECHNOLOGY

The primary focus of the investigation centered on assessing the influence of specimen orientation on the surface roughness of cubical specimen during the Selective Laser Melting (SLM) fabrication process.SLM, an additive fabrication technique based on Powder Bed Fusion, utilizes a high powerdensity laser to selectively melt and fuse metallic powder, forming distinct regions within and between layers.The study specifically utilized a straightforward cuboid part measuring 15 mm by 15 mm by 30 mm, oriented at five different angles (0, 30, 45, 60, and 90) along the X-axis.In the experimental phase, ten specimens were produced, with five specimens each at scanning speeds of 650 mm.s -1 and 1000 mm.s -1 .The metallic powder employed in the study was austenitic stainless steel SS 316L.Surface parameters (Ra, Rz, Rq) were meticulously measured (five times) for each print.The Renishaw AM400 SLM machine was utilized for printing, and subsequent surface examinations were conducted using the Mitutoyo SJ-210 portable surface roughness tester device.The article presents visual representations of the surface roughness results, revealing a discernible correlation between increased part orientation and heightened surface roughness.These findings bear relevance for part design, offering valuable insights for achieving lower surface roughness values.