The Formation of a Homogeneous Fine-Grained Structure of the Casting of a Metal Part by the Method of Layer-by-Layer Cooling

The article is devoted to the development of vacuum casting technology with directional crystallization of the casting. The technology of layer-by-layer cooling of a casting is considered, which ensures the formation of a casting with a uniform fine-grained metal structure. This effect is achieved due to the slow filling of the cooled mold cavity with cooling liquid due to the difference in the flow rate of the liquid at the inlet and outlet. At each moment of time, the cooling of the metal is carried out by a thin layer of the casting, which ensures the uniformity and fine-grained structure of the casting material, the absence of shrinkage and internal stresses.