The Influence of Laser Power and Scan Speed on the Dimensional Accuracy of Ti6Al4V Thin-Walled Parts Manufactured by Selective Laser Melting

Laser Powder Bed Fusion (LPBF) technologies such as Selective Melting (SLM) are being increasingly considered viable production routes. This paradigm change demands an in-depth understanding of the fabrication process and variables, previous studies have shown that energy density calculation alone is insufficient, because parts fabricated using similar density, but different combinations parameters, can display significantly properties dimensions. Thin-walled particularly influenced by processing parameters; in this sense, study explores influence laser power scan speed on dimensions Ti6Al4V thin-walled tubes. Predictive models for manufacturing tubes were developed Response Surface Methodology (RSM), most influential (single combined) factors determined Analysis Variance (ANOVA). Three obtained: wall melt zone thickness, total hole width.