Centrifugal casting

LBI produces high quality centrifugal cast components based on specific non-ferrous alloys, special steels or composites with a metal matrix and made as per your requirement.

Main features

The Centrifugal Casting (or spun casting) process in metallic tooling under very high acceleration, produces a casting using centrifugal pressure. This pressure creates, within the alloy, a very important degassing, which rejects all the impurities, potentially contained in a liquid metal melt, towards the bore.

The one-direction cooling and solidification of the alloy are perfectly controlled.

Vertical centrifugal casting (or vertical spun casting): heavy parts, whose diameter is generally more important than the length, are produced using vertical centrifugal casting machines
Horizontal centrifugal casting (or horizontal spun casting): long parts are produced using horizontal centrifugal casting machines

LBI can supply different part profiles such as: tubes, crowns, rings, sleeves, etc. for various applications: pressure vessel component, radioactive waste storage or transport packaging, submarine mast or surface vessel, pump body, autoclave body, chromatography column body, etc.

Les Bronzes d'Industrie – Process and Know-how - Centrifugal casting

A more economical process

Better characteristics

Unique capabilities

4,5 m

Max length

6 m

Max outer diameter

20 t

Max weight

Dimensions and shapes

Centrifugation is mainly reserved for hollow cylindrical parts (rings, tubes, etc.). The raw external profile, generally of revolution, can be stepped (several different diameters), with flange(s) or even conical shapes.

The bore, which is cylindrical because cores are not used, is obtained by the quantity of metal introduced into the centrifugation shell.

The large fleet of tools, of more than 1,500 shells, makes it possible to achieve the dimensions and shapes requested very closely enabling an economical solution with little waste.

Main advantages

The combination of induction melting and centrifugal casting (or spun casting) process leads especially, as far as austenoferritic steels are concerned, to very high quality levels, similar to those obtained on parts cast under vacuum or with AOD converter.

Alloys obtained

Fine structured,
Sound and compact,
Perfectly homogeneous,
Free from blowholes and inclusions,
Very high mechanical properties (the highest you can obtain by any foundry process)

Produced parts

Easily machined,
Free from any distortion,
Enhanced resistance to corrosion and wear.

Alternative to forging

Centrifugal casting is an alternative to forging or to wrought processes: ring rolling, stamping and open-die forging.
Centrifugal casting consists of pouring liquid metal into a metal coquille/mould under high acceleration (> 50g). LBI produces components by horizontal or vertical centrifugal casting. The solidified alloy, under the effect of the centrifugal pressure, has a fine and homogeneous structure.

Many applications
Centrifugal castings are an alternative to forgings in several sectors such as nuclear, defence, shipbuilding, machine tools… We offer different centrifugal casting pieces made of stainless steel, copper based alloys or aluminium in different shapes and sizes.

Flexibility and control of alloy elaboration

We produce high-quality centrifugal casting components and we propose specific alloys that can be customized. LBI develops the alloys according to your need in order to reach the mechanical and physical characteristics that are specific to a particular application:

magnetic permeability
maximum controlled levels of sulphur, phosphorus, carbon and cobalt
corrosion resistance (specific PREN)
weldability

Forgings and centrifugal castings comparison

In the case of a single flange bush or with a collar on the outer diameter, the metal amount required to produce the same piece is much lower and optimized by centrifugal casting than forging. In centrifugal casting, the weight of the as-cast part is directly optimized.