The goal of this thesis is to analyze die casting process trough modern technology computer simulations, and to transfer the theoretical knowledge and experience to an existing process with the aim of decreasing the production of scrap of a specific product. Also an attempt will be made to create a suggestion of placement of temperature sensors which strategically cover the most critical zones on die casting tool in order to accomplish a better die casting part. At the moment there are multiple difficulties and problems that cause an increase of poor quality of the die casted part and production of scrap. The problems are related with part cooling or with the casting itself. The issues that are directly tied to the problematic of this thesis are described in detail and it is because of them that it has been decided to put heat balance the die casting tool under supervision using a system upgrade with temperature sensors. The term and various kinds of die casting, as well as comparison of advantages and disadvantages of different kinds of die casting have been reported in the thesis along with a description of the process, machine and tool parts, and parameters relevant for the casting that is being analyzed. A program for die casting simulation MAGMASOFT has also been described, since the program is used to depict simulations in cases where there is an optimal flow of the cooling water or when there are obstructions in the system that impede or completely stop the flow. In one of the chapters, an analysis of the simulation is made using actual parameters that are used in die casting of the specific casting that is being elaborated. The following chapter is dedicated to simulations in which one of the cooling circuits is not working to gain insight in the condition when different cooling circuits are not functional. In the process of analysis the most critical zones on the die casting tool have been found, where the simulation has shown the largest deviations from the optimal temperature. A suggestion of placement of the temperature sensors has been made for the mentioned critical zones using simulations and a 3D model. Although there are several zones where the sensors can be placed, it can only be done on the v60 version, which does not use the cooling of large sliders, while the other zones cannot be tracked in this manner.