EnglishCentrifugal casting is a casting method where molten metal is poured into a high-speed rotating mold. Centrifugal force ensures the metal distributes evenly and solidifies into shape. This process significantly enhances the mechanical properties and surface quality of castings, making it suitable for producing components like steel pipes, dentures, and electric poles.
Process Principle
The core of centrifugal casting lies in using centrifugal force to spread molten metal uniformly along the inner wall of the mold. Under centrifugal force, the molten metal fills the mold radially to form the free surface of the casting. A hollow structure can be obtained without the need for a core.
Process Classification
Horizontal centrifugal casting: The mold rotates around a horizontal axis, suitable for long tubular castings.
Vertical centrifugal casting: The mold rotates around a vertical axis, suitable for shaft or annular castings.
Inclined-axis centrifugal casting: Less commonly used, with the rotation axis forming a large angle with the horizontal/vertical line.
Advantages
No need for cores, simplifying the production process.
Castings have high density, with fewer defects such as porosity and slag inclusions.
Suitable for thin-walled and long tubular castings, such as bimetallic rolls and steel-backed copper bushes.
Disadvantages
Limited to producing non-irregularly shaped castings.
Low precision of inner hole diameter and high surface roughness.
Application Fields
Widely used in metallurgy, aerospace, automotive and other industries. Typical products include centrifugally cast iron pipes and internal combustion engine cylinder liners.
