Influence of the Energy Density on the Porosity of Polyamide Parts in SLS Process

Abstract:

This paper presents an experimental study about the influence of the Selective Laser Sintering process parameters on the surface and cross-section porosity of parts sintered in polyamide PA2200 material two times recycled. Using of recycled powder affects the part structure and mechanical properties. Therefore, the paper aims to develop a suitable strategy to improve the part structure by controlling the most important SLS process parameters. The main process parameter whose influence was studied is the energy density of the laser beam. Special sample was designed and prototyped using EOS P100 prototyping machine. Three repetition jobs with different energy density of the laser beam were performed. Scanning Electron Microscopy was used to analyze the surface morphology and microstructure of the sintered benchmark parts. The relationship between the SLS parameters and part quality will extend the use of PA2200 recycled material.

• Periodical: Solid State Phenomena (Volume 188)
• Pages: 400-405
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.188.400
• Online since: May 2012
• Authors: Mirela Toth-Taşcău, Aurel Raduta, Dan Ioan Stoia, Cosmin Locovei
• Keywords: Polyamide PA2200, Porosity, Process Parameter, Scanning Electron Microscope (SEM), Selective Laser Sintering (SLS)

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