Analysis of 3D-Printing Layer Height Pattern Effect to ADC12's Mechanical Properties Investment Casting Results

This study aims to determine the mechanical properties, both hardness and tensile strength of investment casting results from 3D-Printing patterns. In this analysis, the aluminum scrap comes from the piston and will later be Die Casted and become ADC 12. The pattern used Poly Lactid Acid material, then the pattern is printed with varying layer height. After that, analysis was carried out using experimental for surface roughness and hardness of ADC12. The Hardness value is used to get the Tensile strength of ADC12 from empirical aproach. The results of the analysis show that the hardness and tensile strength of the ADC12 casting investment product have decreased due to the increasing value of the surface roughness of the cast product which is influenced by the use of a larger layer thickness.