Manufacturing
Manufacturing

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Manufacturing

2.3.2 Permanent mould

In this method the same mould is used for large numbers of castings. Each casting is released by opening the mould rather than by destroying it. Permanent moulds need to be made of a material which can withstand the temperature fluctuations and wear associated with repeated casting. A good example of a product made with methods such of this is the ubiquitous 'die-cast' child's toy ('die' is another word for 'mould').

Figure 18
Figure 18 Die-cast toy
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