Automated shell production

The ceramic moulding process is also a manufacturing process in investment casting. It is also known as the shell moulding process. This process is particularly suitable for high-melting metals and alloys such as grey cast iron or steels.

After the manufacturing optimisation of the components has been completed, a silicone mould is designed and manufactured for the production of models. Subsequently, wax models are produced in this silicone mould. By using the vacuum casting process and the subsequent finishing of the wax models, the high accuracy and surface quality of the models can be guaranteed. For very large quantities, models made of polymethyl methacrylate (PMMA) are used.

The models produced in this way are then combined into a model cluster and dipped several times into a ceramic mass, the slip, and sanded. This process is repeated until a sufficient shell thickness is obtained. After the models have been melted out, a cavity is created which reproduces the casting geometry. Subsequently, the model shell (casting screw) is fired and is then directly available for casting according to the gravity casting process.

After casting, the ceramic is removed mechanically. The components are polished and mechanically machined if necessary.

The choice of moulding process depends not only on the desired number of pieces but also on the material used. Based on your component requirements, we will suggest the most suitable process. Our CAD department makes any necessary changes for manufacturability in cooperation with you.

Vollautomatisierte Schalenherstellung
Automated shell production
Schematic representation of the shell moulding process

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