Effect of Process Parameters of Fused Deposition 3D Printing on the Dimensional Accuracy of PETG-Tough Thin Wall at Different Angles
The dimensional accuracy of thin-walled parts produced from fused deposition molding(FDM)3D printing at different inclination angles was studied based on the orthogonal experiment,the influences of layer height,extrusion temperature,and extraction distance on the dimensional accuracy of FDM 3D printing at different inclination angles were studied.Range analysis and variance analysis were used to process the resulting data and we obtained the optimal parameter combination.The results show that the changes of extrusion temperature and suction distance have little effect on the size error.Besides,the influences of layer height on different inclination angles are different:for 25° and 30° inclination angles,the size error decreases and then increases;for 35° inclination angle,the size error slightly increases and then decreases;for inclination angles≥40°,the size error has an increasing trend.Finally,the influences of single factor and different levels on the accuracy of different inclination angle dimensions were analyzed through experimental results,and it is found that extrusion pressure,suspension distance,material viscosity and wiring methods are the main reasons for size errors.
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