Study of Solidification Process of Ni-Based Superalloy Castings Manufactured in Industrial Conditions with the Use of Novel Thermal Insulating Module Technique

Abstract The solidification process of IN713C Ni-based superalloy rod castings made by the investment casting method without and with use novel insulating module applied on ceramic mold was studied in this article. design cone-shaped developed based numerical simulations distribution local parameters, ensuring lowest centerline shrinkage porosity along castings. effectiveness tested industrial trials. It found that a insulation increases temperature gradient G decreases cooling rate v , thus leading to favorable increase Niyama criterion value ( Ny = G/√v) also directional compared where thermal not used. In way, removed, maintaining equiaxed grain structure presented results show it is possible same multiple times, subsequent manufacturing processes, control precision conditions.