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Moulding is a process of shaping liquid (or pliable) raw material such as plastic, glass, metal or ceramic using a rigid frame (a mould).

Moulds are predominantly made from metal and LPG provides a number of applications in the formation and use of permanent metallic moulds.

  • LPG firing with air or oxygen is used for the preheating of the metallic mould. This prevents the loss of the first amounts of raw material due to cold mould.

LPG is also useful where sand is the mould material. It is used power small ovens which dry the sand cores, as well as the manual torches used to dry the inner surface of the mould.

It is furthermore used for sand-recovery where an LPG powered (rotary drum) kiln can be used to evaporate and incinerate sand additives such as phenolic resins.