Centrifugal casting

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”.

The disadvantage of centrifugal casting is its limited geometric shape.  The cast part always has to be rotationally symmetrical, whereby it is cylindrical in horizontal casting or conical in vertical casting, depending on the position of the axis of rotation.  Because casting is done through the rotation axis, a drill hole in the centre axis is necessary in the product to be manufactured.

As a result of the virtually unlimited range of material, independent of what is available, and the high productivity, 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.