Investment Casting Simulation of ASTM F75 Acetabular Implant with Mold Pattern Orientation and Gating System Geometry Variation

An acetabular implant is a cup-shaped implant that wraps around the head of the femur at the hip joint. Severe damage to the acetabular implant results in bone turnover. To meet the needs of implants, appropriate implant manufacturing techniques are needed. Investment casting is the most widely used casting method because it has the best dimensional accuracy. To help reduce production costs in the industry, this research was carried out using the ProCast 2018 Software. In this study using the 2018 ProCast Software with investment casting techniques with CoCrMo material and variations in the orientation of the mold pattern, namely 0o, 45o, 90o and variations in the shape of the sprue including straight sprue , tapper sprue, and reverse tapper sprue. From these variations, the most optimal result is the tapper sppue variation with 0o print pattern orientation. With the results of the analysis related to the temperature distribution that occurs, fluidity, solidification process and the most optimal shrinkage porosity.