METHOD OF PRODUCING CAST STEEL BY CENTRIFUGAL CASTING Russian patent published in 2018 - IPC B22D13/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a foundry, in particular to the production of castings by centrifugal casting. In the rotating molding around the vertical axis, the casting is performed by casting the melt and simultaneously feeding refractory dispersed particles with a density of more than 8,000 kg/m³, such as tungsten carbide, to harden the outer surface of the casting. After pouring 50 % of the melt, the supply of tungsten carbide is stopped and to harden the inner surface of the casting delivering particles of density less than 8,000 kg/m³ , for example silicon carbide, until the melt is cast.

EFFECT: provides the production of castings with high mechanical properties of the external and internal surfaces.

4 cl, 2 dwg