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Know How : Mould casting
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Molding process consists in making a copy of the desired part
by using chemically bonded sands
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Sand casting is the single casting method applied by the Group.
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The mold is made from a pattern (being adapted from an existing one or created for the purpose).
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Several components are then added into the mold :
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Chillers can be placed in the mold to control the solidification of the metal
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Risers are also added in to supply molten metal at desired areas during the solidification of the metal
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Gates are created to pour down the liquid metal into the mold
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The mold is filled up with a sand mixture, bonded by chemical binders, such as furane resins.
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Sand-molded cores can then be inserted in the mold to create holes and improve the casting's net shape.
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Two piece molds are clamped together to avoid that melted metal escapes when poured down.
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