Part 1:Manv Aluminum castings are being produced all over the world, using gravity die casting process. Shrinkage porosity is one of the major problems faced. In part 1 theoretical aspects of shrinkage are illustrated. How to identify, analyze & find root causes for Macro & Micro shrinkages & develop solutions? are explained. In part 2:Case study 1: In a critical casting" Body", shrinkage occurred inside bore & solved by reducing wall thickness & re designing core. Case study 2: Micro shrinkage was occurred in a critical casting, "Valve body". By re designing the "casting shape a little" & providing copper chilling it was solved.
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