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- Title
INFLUENCE OF LASER ENERGY IN THE SURFACE QUALITY OF PARTS MANUFACTURED BY SELECTIVE LASER MELTING.
- Authors
Zapico, Pablo; Giganto, Sara; Martínez-Pellitero, Susana; Fernández-Abia M., Isabel; Castro-Sastre, Maria Ángeles
- Abstract
Selective Laser Melting (SLM) is an important additive manufacturing technique of great interest to the Aerospace and Automotive industries because of the possibility to obtain high complex parts with material savings, in contrast to conventional processes. In SLM, parts are built layer by layer using a high power-density laser which is capable to selectively melt a powder layer bed and joined it with the previously melted one. Despite the high advantages of this technique for the cited industries, the tight quality requirements in their parts together with the lack of characterization of properties of parts obtained by SLM technique limit its real application. In this work, the influence of the quantity of laser energy absorbed by the 17-4PH stainless steel powder during the SLM process on the surface quality obtained is analysed. For this, the influence of laser power parameter of the ProX 100 SLM machine was studied. Also, the influence of defocussing parameter was studied because of its effect in the laser energy concentration on the powder bed. To characterize the influence of the cited parameters in the surface quality of the parts, a Jeol JSM-6480LV scanning electron microscope (SEM) and a SJ-500P contact profilometer were used.
- Subjects
SELECTIVE laser sintering; MANUFACTURING processes; SCANNING electron microscopes; PROFILOMETER; PRODUCTION engineering
- Publication
Annals of DAAAM & Proceedings, 2018, Vol 29, p0279
- ISSN
1726-9679
- Publication type
Article
- DOI
10.2507/29th.daaam.proceedings.040