INFLUENCE OF DIE CASTING PROCESS PARAMETERS ON THE MECHANICAL PROPERTIES OF CASTINGS

Die casting is a process of injecting molten metal into a metal die under high pressure. The die design, the gating system, venting, and cooling play a crucial role. The quality of the castings is also influenced by pressure, injection speed, and the alloy composition. The experiment studied the impact of die-filling modes on the mechanical properties of castings made from silumin according to CSN 42 4331. Tests were conducted on 180 samples at different positions in the die, temperatures, and injection piston speeds. The chemical composition was analyzed by spectroscopy, and tensile strength (Rm) and microstructure were observed. The results confirmed the importance of proper process parameter settings to achieve optimal mechanical properties and minimize casting defects.