in: DAAAM International Scientific Book 2020, BRANKO KATALINIC, Editor, DAAAM International, Vienna, pp.171-180, 2020
Additive manufacturing (AM) is a rapidly growing technology that provides
opportunity to generate complex geometries, layer-by-layer without any tool, die and
fixture. AM was used just for rapid prototyping at first while it has been started to use
for generating near net shaped final product in these days. However, dimensional
accuracy is not at the desired level for the functional parts. Type of the AM method and
process parameters have important effect on dimensional deviations of the AM parts.
In this research study it is aimed to determine effect of process parameters on
dimensional accuracy of AlSi10Mg screw parts manufactured by Direct Metal Laser
Sintering (DMLS) method. Taguchi L9 orthogonal array was used for experimental
design. Laser power, scan speed, beam offset and build angle process parameters were
changed in three different levels. Dimensional measurements were taken by coordinate
measuring machine (CMM). Results were revealed that, process parameters had
important effects on dimensional accuracy of DMLS manufactured parts.