Optimization of 3D printing parameters of Screw Type Extrusion (STE) for ceramics using the Taguchi method

Minimizing the variation of the discharging volume becomes a critical point to control the 3D printability of non-Newtonian ceramics and precise control of pressure, shear rates, and time-dependent viscosity become important factors. Taguchi method was used to obtain a constant linear-velocity by optimizing the printing parameters: A L9 orthogonal array (OA), magnitude, signal-to-noise (S/N) ratio, and extent of the impact of independent variables, which are water content in material (WC), revolutions per minute (RPM), and diameter of the nozzle tip (TIP). This data is employed to improve the 3D printability and linear-velocity of discharged ceramics. Bowls, pottery, and patterns of 2.5D and 3D structures have been successfully printed in various sizes with ceramic materials under optimal conditions. The Taguchi method optimizes the Screw Type Extrusion (STE) process and provides 3D printing data on precise control of ceramics as biomaterials.