What are the Benefits of the Cast Iron Shell of the Cast Iron Vertical Pipeline Pump?

The structural advantages of the cast iron vertical pipeline pump are rooted in the synergy of the physical properties of the shell material and the casting process. Its cast iron shell is formed by high-temperature melting and casting to form a dense eutectic structure, which has the dual functions of inertial damping and rigid support, while suppressing the transmission of mechanical vibration and maintaining the geometric stability of the impeller shaft system. The isotropic characteristics of the material allow the shell to withstand multi-directional fluid pressure fluctuations and avoid the risk of crack propagation caused by local stress concentration.

The graphite phase formed during the casting process of the cast iron vertical pipeline pump is distributed in the iron matrix, forming a natural friction-reducing interface, reducing the erosion rate of the liquid medium on the inner wall of the shell. The surface characteristics of the microporous structure promote the natural formation of the oxide film, forming a passive anti-corrosion layer to delay the rust process. Compared with other metal forming processes, the cast iron shell is more economical in complex flow channel forming, and can be quickly adapted to different head requirements through mold adjustment.

The difference in thermal conductivity affects the operating stability of the cast iron vertical pipeline pump. The higher heat capacity of cast iron buffers the shell deformation caused by the sudden change of fluid temperature, and cooperates with the natural convection heat dissipation mechanism of the vertical structure to avoid seal failure caused by local overheating. The material acoustic impedance characteristics effectively absorb the high-frequency noise generated by the blade passing frequency, improving the environmental friendliness of the cast iron vertical pipeline pump.