Community Research and Development Information Service - CORDIS

FP5

PLASCAST Report Summary

Project ID: G1RD-CT-2000-00443
Funded under: FP5-GROWTH
Country: United Kingdom

A plaster formulation which can be cast into blocks and machined (CNC) to manufacture a mould which can be dried and alloys cast into it directly

A plaster formulation has been developed which can be cast into blocks and machined (CNC) to manufacture a mould which can be dried and alloys cast into it directly (taking out 2 steps in the existing machining process).

The production of cast parts usually requires the manufacture of a pattern from which a mould impression is taken. More recent developments have progressed this process to using CAD/CAM techniques to directly machine a mould ready for casting, eliminating the need to manufacture a pattern. This has provided benefits in both time and cost where prototypes or small numbers of castings are required. It provides a fast route to market and offers advantages of increased accuracy of both the mould and finished casting. The application of this process to plaster has been restricted by the problems associated with the current casting plaster relating to the machining characteristics and also the safety limits applied to silica dust. A new plaster formulation has been developed to overcome these problems and is now available for use providing a process for direct mould manufacture from CAD data.

Reported by

CDC
7 East Bank Road
S2 3PT Sheffield
United Kingdom
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