According to 3D-data, we produce a stereolithographic primal model, on the basis of which we form a silicon tool afterwards. This casting mould is filled with wax under vacuum. The casted wax parts are affixed to a sprue puller (wax cluster). This wax cluster is enfolded in a cuvette (cast box) with liquid gypsum afterwards. One hour later, wax can already be melt out. This accrued plaster mould still remains one day in kiln furniture. After burning process, this high-quality metal cast form is filled with liquid metal under vacuum. After this the metal part is released from gypsum and sprue puller. A differential pressure during casting process is responsible for an optimal filling of the cast mould and a result cast parts can be fabricated with a wall thickness of less than 1 mm. The configuration is almost free of pores and features a likewise pressure casting structure. The surface quality is comparable to serial investment casting parts. All such metals having a melting point below 1,300°C, e.g. aluminium, zinc, copper, brass, bronze, magnesium, etc can be casted.
You require prototypes for functional tests with slimsy wall thickness and well-handled surfaces. The parts are millcutted only in a difficult manner. It is not possible to cast the requested wall thickness by sand casting. Pressure of time and costs do not allow the fabrication of a prototype pressure casting tool.
We apply the investment casting procedure that renders by investment casting allowance quick and individual production of thin-walled cast parts in limited lot size possible.
- Time saving by delivery times of 2-3 weeks for cast parts, including data transfer, modelling and finish cutting
- Cost-saving by using a prototype model facility
- Precast parts, because we would also like to assume the processing and mounting of the cast parts
- Short-time work preparation, because of no need of cast part designs and mould design
- Raised product ripeness by precious conducted experiments which results can be used for product improvement