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Foundry The Geographe foundry is capable of casting ferrous and non-ferrous alloys using both sand moulding and centrifugal moulding techniques. With up to 250kg induction melting capacity Geographe can cast high quality castings in most alloy types. Plain carbon steels, low-alloy steels, stainless steels, manganese steels and high alloy special steels have all been cast by Geographe, along with non-ferrous metals such as aluminium, lead, gun metals and manganese and aluminium bronzes.
Centrifugal Casting This process entails pouring molten metal into a mould that is spinning. Generally this is limited to non-ferrous alloys; however some ferrous alloys can also be cast using this method. The mould is typically made from steel or cast iron and results in faster cooling of the casting. The faster cooling rate of centrifugal casting results in a finer grained casting which typically has better mechanical properties.
Sand Moulding Geographe uses chemically-bonded, self-setting silica sand for the manufacture of sand moulds. Moulds are made by forming the mixed sand over a pattern. Once the sand has hardened, the pattern is removed, leaving an impression that can then be filled with molten metal. Foundry work is the process of making a metal casting of an object by pouring molten metal into a mould. The mould is made using a pattern of the article required. In some cases, the mould contains a core that determines the dimensions of any internal cavities. There are two types of foundries. Ferrous foundries produce iron and steel castings. Non-ferrous foundries produce castings of copper-based alloys (brass, bronze and copper), aluminium-based alloys (lead, zinc, nickel, magnesium) and other alloys.
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