During the centrifugal casting process, the liquid steel is poured into a rotating canister and pressed against the outer wall of the canister by the centrifugal forces. After it has been poured in through the centre, the stainless steel is rotated at up to x120 acceleration of gravity. Air bubbles and coarse impurities are therefore driven out by the different densities. After the steel has been poured in, there is a continual solidification from the outer wall of the canister to the inner surface. More delicate ingredients and slag are driven from the front of the solidification to the inside and can then be processed.
This results in a particularly pure, adjusted structure which is comparable with the forged material in terms of its characteristics. Unlike the forged steel, the characteristics are independent of the direction of load – centrifugal casting does not have any lengthways “fibres”.
Centrifugal Casting allows for virtually unlimited range of material, and centrifugal casting offers superior performance at an attractive price. Centrifugal casting combines the high quality and excellent material characteristics of forged steel with the flexibility and productivity of cast parts. If it is suitable in terms of geometry, centrifugal casting is often the first choice in machine and plant construction for stainless steel components that have to withstand pressure.
The use of centrifugal castings in industry are many. Typical applications of centrifugal castings include Decanters , Valves , Pumps , Steel Mill Rollers , Rudder and Propeller Parts in Shipbuilding , Sealing Technology , Industrial Motors.
During the process of centrifugal casting, the mould is spun constantly at high speeds. The molten metal can then be poured into the casting where the centrifugal force throws it against the wall of the mould where is sets once cooled. The casting will be checked for any impurities and these can be easily machined away if detected.
There are many types of centrifugal casting machines and these can be found in either vertical or horizontal variants. For the production of long and thin cylinders, horizontal machines are preferred whilst vertical machines are preferred for the casting of ring components.
There are many benefits to using centrifugal castings, including:
Centrifugal castings are versatile and can call on a wide range of materials. Typical material choices include steel and stainless steel, glass, aluminium, iron, copper and nickel. It is also possible to centrifugally cast two materials at the same time by pouring in a molten formula of the second material during the casting process.
The use of centrifugal castings in industry are many. Typical applications of centrifugal castings included boilers, pipes, flywheels, pressure vessels and any other part that needs axi-symmetric qualities.