Spun Castings

Geleval work with a top Italian Spun Cast foundry 

During the spun 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 material 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 , copper , bronze etc 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 – spun casting does not have any lengthways “fibres”.

Spun Casting allows for virtually unlimited range of materials to be used and spun casting offers superior performance at an attractive price.Spun 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.

Main benefits to using spun castings

  • Castings can be manufactured to exact requirements - choose the length, diameter and thickness that you require.
  • The same mould can be used to cast a range of wall thicknesses.
  • Centrifugal castings eliminate the need for cores.
  • Centrifugal castings have excellent mechanical qualities.

Common Materials Used in the Spun Casting Process

  • Spun castings are versatile and can call on a wide range of materials. Typical material choices include steel and stainless steel, copper and nickel and bronze.
  • 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.

Centrifugal Castings and Their Application

The use of spun castings are many. Typical applications of centrifugal castings include Decanters , Valves , Pumps , Steel Mill Rollers , Rudder and Propeller Parts in Shipbuilding , Sealing Technology , Industrial Motors.