THE EFFECT OF EXTRUSION SPEED ON SURFACE ROUGHNESS FOR 3D PRINTED PARTS
Pınar Demircioğlu İsmail Böğrekçi H. Saygın Sucuoğlu Neslihan Demir
AbstractThe aim of this study is to investigate the effect of the extrusion speed on surface roughness and quality of the produced components with additive manufacturing technique. Computer Aided Design (CAD) model of specimens were prepared using Autodesk Inventor Software. Then the models were exported as STL file format for rapid prototyping. The specimens were produced with the dimensions of 10x10x10 mm. Cube specimens were manufactured using Prusa İ3 desktop type 3D printer with the 90-300 microns layer height manufacturing capacity. The printing settings were prepared with Simplified3D software. Layer heights were used as 200 microns for all samples. The heated bed temperature was selected as 60°C to increase the bonding and surface quality. The extruder temperature was set to 195°C. The samples were produced with the extrusion speeds of 20, 40, and 60 mm/s to determine the surface roughness and quality. Surface roughness of the specimens were measured in micro-scale. The surface investigations were performed with a rotating Nipkow disc confocal microscope (NanoFocus - µsurf) with the specifications of 1.6 µm spatial resolution, 0.04 nm Z resolution and 3.1 mm Z range. According to the obtained results from surface roughness measurements the relationship between extrusion speed and surface roughness of produced samples were analyzed. The results showed that the lower extrusion speed the better surface roughness.