Mechanical properties of workpieces based on 3D printing

In view of the quality defects of 3D printed workpieces and insufficient mechanical properties of parts, the optimization of mechanical performance parameters of workpieces based on 3D printing was studied. Taking the FDM molding technology and 3D printing technology of PLA material as the research object, better mechanical properties of the device can be obtained by optimizing the printing temperature, filling rate, and other parameters of the workpiece spline. Experimental results show that for printing temperature, an increase in temperature will increase the ultimate strength of the material, but will also decrease the elastic modulus, so 195°C was finally selected as the processing temperature. For the filling rate and the number of contour turns, the larger the value is, the better the mechanical properties of the processed workpiece will be. The ultimate strength and elastic modulus will increase, but the elongation at break will decrease. Other parameters such as layer thickness, filling angle, etc. have less impact on mechanical properties.