ABSTRACT
The purpose of the research is to improve the precision and optimize the mechanical characteristics of 3D-printing technology, based on Fused Deposition Modeling (FDM), by adjusting the temperature and printing speed, in order to maximize the productivity and to minimize the material cost of Polyethylene Terephthalate Glycol (PETG). This research also analyzed the effects of temperature and printing speed parameters on these two materials, including their precision and material properties, and the following results were obtained: (1) Increasing the printing temperature in the material processing range improves the tensile strength, compressive strength and flexural strength of the material significantly. (2) In order to optimize the mechanical characteristics of precision and the heat-resistant ability of the PETG material, the printing parameter should be set at a processing speed of 30m/s, and the nozzle temperature should be 245°C, which could decrease the deviations of the product and obviously maximize the heat distortion. (3) When the mechanical characteristics are focused on the heat-resistant ability, the printing parameters of the processing speed and nozzle temperature should be set at 25m/s and 225°C, respectively.
