After pouring, the internal quality and surface quality of the IP inner cylinder steel casting meet the technical requirements, which proves that the molding scheme, riser design, anti adhesion measures, crack prevention measures, and gating system design of the casting process are successful. After trial production, the steel casting is as shown in the figure.
The casting process for the steel castings of the intermediate pressure inner cylinder has been verified in production, making the molding process easy to operate, controlling the wall thickness of the chamber reasonably, and reducing sand adhesion; There are few cracks in parts with large wall thickness differences such as the back flange, and the crack control is reasonable. The chemical composition, mechanical properties, and non-destructive testing requirements of steel castings meet customer technical requirements.