Influence of Technological Factors of Die Casting on Mechanical Properties of Castings from Silumin

Die casting represents the highest technological level of metal mould casting. This technology enables production of almost all final products without necessity of further processing. The important aspect of efficiency and production is a proper casting parameters setting. In the submitted paper following die casting parameters are analyzed: casting machine plunger speed and increase pressure. The studied parameters most significantly affect a qualitative castings dimension and they influence the most a gained porosity level f as well as basic mechanical properties represented by tensile strength R m and ductility A 5.