Process optimization to improve quality of parts, to enhance production times and, consequently, to reduce costs, is a crucial element in manufacturing companies. The aim of this Thesis, result of my five months internship at the Quality department of Dynacast Italia Torino S.p.A. in Grosso (TO), is to introduce efficient improvement actions to the current hot chamber die casting process of zinc components. For this purpose, it is first necessary to provide a general introduction to zamak alloys, offering an overview of their composition, mechanical properties and influence of alloying elements, outlining also the basic functioning principles of hot chamber die casting machines which, combined with the versatility of zinc alloys, allow the reaching of high quality performances within advantageous times and costs.