Manufacturing technology for natural aerodynamic cylinder

The invention discloses a manufacturing technology for a natural aerodynamic cylinder and aims to solve the problems that a conventional cast natural aerodynamic cylinder is low in precision and intensity and has multiple casting defects. The manufacturing technology disclosed by the invention mainly comprises the working procedures of contour and sand core manufacturing, baking, molten iron smelting, vermicularizing treatment and pouring. The natural aerodynamic cylinder manufactured by the manufacturing technology has the characteristics of high contour size precision, high surface smoothness, high intensity and high mechanical property, and the manufacturing technology is particularly suitable for manufacturing of the natural aerodynamic cylinder.