Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Influence of Nozzle Temperature on Dimensional Tolerances of Specimens Produced With Material Extrusion Manufacturing
Submission Author:
José Guilherme de Freitas Peres , MG , Brazil
Co-Authors:
José Guilherme de Freitas Peres, Lucas Resende Gomes, Alexandre Zuquete Guarato
Presenter: José Guilherme de Freitas Peres
doi://10.26678/ABCM.COBEM2021.COB2021-0443
Abstract
Additive Manufacturing (AM) technology has some advantages when compared with the established manufacturing processes, such as the ability of manufacturing specimens with complex geometries, little waste of material, efficient use of energy and the capability of quickly obtaining low quantity of complex specimens. However, due to the high number of manufacturing parameters that affect dimensional and geometrical tolerances AM is still generally limited to prototype specimens. One of the most widespread AM process is the Material Extrusion (ME), which uses thermoplastic filaments. During ME process, several printing parameters may affect the final quality of the specimen. This work aims to experimentally analyze the influence of the nozzle temperature on the dimensional tolerances of specimens produced through ME process. A simple specimen is designed with a commercial CAD software. The specimen has different topological geometries such as planes, cylinders, and holes. The manufacturing process is carried out using a GTMax3D CORE A3V2 printer and white ABS filament. The following nozzle temperatures are investigated: 210 °C, 230 °C and 250 °C. Dimensional measurements are carried out using micrometers under controlled environment. Results indicate that the nozzle temperature of 250 °C leads to better overall dimensions but 210 ºC nozzle temperature is required for better dimensional tolerances of the inner diameter of the specimen.
Keywords
Additive manufacturing, material extrusion process, Nozzle Temperature, Dimensional Tolerance, ABS
