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Ceramics

KURTZ Low-pressure aluminum die casting machine for investment castings

KURTZ Low-pressure aluminum die casting machine for ceramic mould investment casting

Aluminum parts cast in investment casting with a wall thickness of 1 mm and less are used, for example, in military engineering, aircraft construction, automotive industry and also in machine construction. In short, anywhere where every gram counts, in order to keep the weight of moving parts to a minimum.

In general, geometrically complicated ceramic clusters have to be filled extremely fast yet smoothly. Such a type of mould filling is necessary in order to be able to cast very thin-walled parts with many cross-section changes. In addition, the required mechanical properties have to be achieved.

Being the heart of the plant, the KURTZ low-pressure control system achieves a mould filling speed of more than 65 mbar/sec, which is necessary for this application. This means around 260 mm of aluminum per second. Besides the fast mould filling, the plant also benefitted from the proven KURTZ-specific elements "Pre-pressure teach in" and "Determination of mould fill starting point" by means of remote operation.

Our machines are equipped with resistance-heated furnaces, used for melting and keeping the metal at casting temperature. The casting plate can be operated manually and positioned above the furnace once ready for casting. While the first furnace is operating, the second furnace can be refilled with metal and can be optimally prepared to achieve highest metal quality.