Study on Screw Type Metal 3D Printing Nozzle Design and Optimized Forming Quality
In response to the high cost of printing materials in desktop wire-feed metal 3D printing systems,a screw type metal 3D printing nozzle has been innovatively designed to achieve the printing and forming of powder and granular 316L-Pom composite materials.Based on the optimization experiments of printing process parameters,it has been found that the main factor affecting the line width error and surface roughness of the printed piece is extrusion flow rate.On the basis of the optimal surface printing parameters,the number of wall passes is the most important parameter that affects the size accuracy of the printed piece.By comparing and analyzing the forming quality of screw type metal 3D printing nozzles and wire-feed type metal 3D printing nozzles,it has been found that the size error and surface roughness Sa of screw type metal 3D printing nozzles are greater than those of wire-feed type metal 3D printing nozzles,which is mainly due to the fluctuation of extrusion flow during the screw extrusion process.
Metal 3D PrintingScrew Type Metal 3D Printing NozzlePowder/Granular 316L-Pom Composite Material
万方数据
维普
