Moulding Materials

The dimensional accuracy of castings, particularly in the case of filigree geometries, is significantly influenced by the distortion of the inserted sand cores during casting. This part of the casting process, which has received little attention to date, is becoming more important due to the increase in inorganic binder systems and the resulting process change. The aim of the research is to understand the warpage of sand cores and the essential parameters relevant to warpage for the dimensional accuracy of the component and to predict them with the aid of simulation, as well as to minimize unavoidable warpage in the future by taking it into account already in the design of the core boxes.

Core shooting

The spectrum of core shooting units ranges from a few cubic centimeters of core volume up to 12l in single-shot operation. Almost all core binder systems can be used. The new heart of the plant park is a 12-liter core shooter of the type Röper FCJ12C-K, which meets industrial requirements thanks to a coupled universal gassing unit and partially automated operation. Due to its flexible design, this machine is suitable for both basic and industrial projects.

The range of services extends from support in core box design to prototype production and small series. Laboratory samples as well as cores for permanent mold and sand casting of real castings are manufactured. The modeling of core gassing is also investigated in basic projects.

Rapid Prototyping

Within the foundry industry, rapid prototyping has become increasingly established for the production of molds and models for prototypes and small series. For current projects, in addition to lost models for investment casting, sand molds can also be produced by rapid prototyping in our own facilities.