The regression model of directional solidification process of casting made of superalloys in the UVNK-8P unit
On the base of simulation results in commercial software ProCAST the regression models for thermal gradient, primary dendrite arm spacing, volume fraction and size of the micropores for cylindrical castings of Ni-based superalloys directionally solidified in vacuum furnace UVNK-8P by liquid metal cooling technique are determined. Solidification condition, structure and possible defects of directional and single crystal casting can be estimated and preliminary choice of processing parameters such as heater temperature, coolant temperature and withdrawal rate can be made not using long time calculating.