Design and Analysis of Shrinkage Defect for an Investment Casting Piece by Cast-Designer Software
Keywords:
investment casting, shrinkage, cast-designer, casting simulationAbstract
From quality inspection of the defect of Body OTC Steady components, which are part of CNC machines manufactured by the investment casting process, it was found that the major issue is the occurrence of shrinkage porosity during the solidification of the metal alloy in the mold. To mitigate the problem, this research focuses on reducing the volume of shrinkage porosity in the Body OTC Steady components by simulating the casting process using Cast-Designer software. This aims to enhance efficiency, reduce unnecessary losses, and provide accurate production trend analysis. The flow behavior simulation is divided into two case studies: the first involves current conditions, while the second redesigns the gating system into three models. The study reveals that in the second case, the design of the gating system with the least shrinkage porosity volume includes two rectangular runners, six rectangular gate1,
and two square gate2, resulting in a shrinkage porosity defect in the new model rate of 0.685%, which is lower than the current model by 1.220%.
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