Application of die casting process for industrial rapid and mass production has greatly increased. In the conventional die casting process, the molten metal is injected by moving plunger through a very thin section ingate and be transferred into the die cavity in the state of turbulent flow in a very short period of time. In the meantime, there exists a numerous gas holes and porosity, within and near the surface of the casting, arising from the turbulent flow which entraps the retained air in the cavity. Therefore, the solution heat treatment of the casting at elevated temperature will result in some blisters in the appearance of casting. It is a severe negative effect both on looking and on mechanical properties. In order to develop a heat treatable casting, two actual aluminum quick connect couplings used in transportation of liquids are tested by low speed die casting process in a conventional casting machine. This study is conducted to examine the effects of processing variables and the cooling media of core pin on properties of the castings. Additionally, the actual casting is also compared with the computational result that is done by MAGMAsoft simulation software to realize the differences between them.
Die casting Turbulent flow Blow holes Porosity Blisters Heat treatable Low speed die casting Simulation software