INFLUENCE OF PROCESSING TEMPERATURE ON WEAR PROPERTIES OF MATERIALS PRINTED USING FDM TECHNOLOGY

<ns3:p>This study analyzes the influence of FDM printing temperature on the wear properties of the PA-12 polyamide under dry friction conditions and in the presence of an abrasive slurry. Tests were carried out using the ball-cratering method at three extrusion temperatures (255 C, 260 C, and 265 C). Under dry friction conditions, the highest wear rate was recorded for samples printed at 255 C, while increasing the printing temperature to 260 C and 265 C progressively reduced the wear intensity. A similar decreasing trend was observed when friction occurred in the presence of an abrasive slurry, where higher printing temperatures led to significantly lower wear rates. This behavior can be attributed to improved interlayer bonding, enhanced structural cohesion, and reduced material porosity at elevated processing temperatures, which collectively increase the resistance of the material to both adhesive and abrasive wear mechanisms. Analysis of wear mechanisms revealed adhesion dominance under dry friction and abrasive wear in the presence of abrasive particles. The results confirm the significant impact of printing parameters on the tribological durability of FDM-manufactured components.</ns3:p>