Computer Modeling of Layered Castings Solidification: Analysis and Optimization

The aim of the article was to explore the principles of surface layer solidification based on computer simulations. The process was observed through computer simulations using the MAGMASOFT program. The studied model sets were separately parameterized in the system according to the conditions present during the casting process. Boundary conditions for FEM and technological data, such as pouring temperature and material, were defined. Based on the conducted studies, it was found that the solidification process of the layered casting, consisting of a base part made of cast iron and a working part made of pure titanium, is the most stable in the case of using an insert with the thinnest connector wall thickness (2.25 mm - these are the inner diameter of the profile) due to temperature equalization. However, this did not favor mechanical conditions compared to, for example, an insert with a medium connector wall thickness (1.5 mm - these are the inner diameter of the profile). The thickness of the connector wall influences the temperature distribution on the insert's surface and in its immediate area near the connection with the casting.