This process was developed by Carthias in France and mainly used for ornamental products. A definite amount of metal is poured into an open ended mould, and a close-fitting core is forced into the cavity, causing the metal to be forced into the mould cavities with some pressure. The core is removed as soon as the metal sets, leaving a hollow thin-walled casting. The steps involved in Carthias casting is shown in Figure 20.19.
Figure 20.19 Steps in Carthias Casting
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