CENTRIFUGAL CAST BRONZE
Centrifugal castings are frequently referred to as "liquid forgings" because, in the centrifugal process, molten metal is literally forged by the high compressive pressure exerted by the centrifugal force.
Physical properties such as tensile, creep, and fatigue strength are increased up to 30% over static and investment casting methods.
Key characteristics emerge from the "molecular packing" action common only to the high-velocity centrifugal casting process:
Since the parts are formed under pressures many times that of gravity, they exhibit a denser, close-grained structure with greatly improved physical properties.
During spinning, heavier metal is forced outward, displacing the lighter oxides and impurities and causing them to "float" inward toward the central axis to be removed later in the boring operation.
Unlike conventional gravity or static castings that chill from both the inside and outside surfaces, centrifugal castings freeze from the outside surface inward. The result is a part free of shrinkage cavities, gas pockets, and blowholes.