چکیده مقاله
Selective laser melting SLM as an additive manufacturing method has attracted increasing attention because of its ability to produce titanium based parts for differentparticular applications such as patient specific medical implants However, usually post processing surface treatments are required to decrease the surface roughness ofthe printed implants In this paper, the influence of two surface treatments including bead blasting using siliconbased spherical glass beads and vibratory polishing wasinvestigated on the surface features of SLMed Ti6Al4V ELI parts The results of the arithmetical mean roughness Ra exhibited that bead blasting and vibratory polishingdecrease the average surface roughness by 78% and 19%,respectively, compared to that of the as built specimen Ra=6 9µm The surface morphology revealed that whilevibratory polishing only eliminates the peaks, bead blasting removes all the partially melted particles and decreases both peaks and troughs, more efficiently Furthermore, the combination of these treatments led to the least roughness Ra=1 3µm When the specimen was bead blasted followed by vibratory polishing, similar roughness parameters were observed in the surfaces with different orientations Moreover, the chemical analysis of the treated surfaces illustrated a trace of the blasting and polishing media Although the blasting was more effective in roughness reduction, it left more residual elements on the surface
کلیدواژهها
نویسندگان
A. H Jabbari
Postdoctoral Researcher, Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
E Abdollahi
Researcher, Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
F Farahmand
Professor, Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
شیوه ارجاع
Jabbari, A. H and Abdollahi, E and Farahmand, F,1400,Effects of Glass Bead-Blasting and Vibratory Polishing on Surface Features of Additively Manufactured Ti6Al4V-ELI,18th National Conference and 7th International Conference on Manufacturing Engineering in Iran
ارائهشده در
مجموعه مقالات هجدهمین همایش ملی و هفتمین کنفرانس بین المللی مهندسی ساخت و تولید ایران11 اسفند 1400 · تهران