preparation of ceramic moulds

preparation of ceramic moulds

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Credit: BEN JOHNSON/SCIENCE PHOTO LIBRARY

Caption: Preparation of ceramic moulds used for precision investment casting: the process is based on the production of a wax pattern, an exact replica of the finished alloy casting. The wax patterns act as templates for making ceramic moulds; the wax is subsequently melted & drained from the mould to make room for the cast metal alloy. Individual moulds are formed on separate units, made by coating the various wax patterns in liquid ceramic & drying in air & ammonia gas. Photographed at NGL, Chard, Somerset, who make a range of products from simple steel castings to complex, heat resistant alloy components for aero-engines.

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Keywords: alloy casting, casting, ceramic moulds, industry, mould, precision, precision casting, precision investment casting, technology

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