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Real centrifugal casting

Forming process which uses centrifugal force to create hollow castings with axial symmetry.

Beskrivning
Illustration of Real centrifugal casting

The process

Before processing can begin the die [1] must be covered internally with a ceramic coating. A motor then begins to rotate the mold, usually made of iron, at between 250-3600 rpm and while it rotates the melt is supplied. As a result the melt, thanks to the centrifugal force, will be pushed out onto the mold wall.

Any gas bubbles and contamination with lower density than the metal will end up on the side of the melt that is closest to the axis of rotation. When the melt has solidified, rotation will stop and it remains only to remove the finished cast product. When the inner peripheral surface is not smooth enough, or when it contains a high amount of contaminations post-processing is applied to smooth the surface.

Synonyms

Centrifugalformgjutning
Gjutning
Real centrifugal casting
Process films
Advantages and disadvantages
In comparison with alternative methods
Good molding grade
only lighter impurities
Cast inlets are not needed
Riser is not needed
Cast products of any length can be produced
Hollow internal parts without cores
Good for rotationally symmetric components
High productivity
Cast products of any thickness can be produced
Imprecision of internal diameter
cannot be used with all alloys
Higher investment costs
Cannot produce complex shapes
Requires staff with a lot of experience