Importance

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Abstract

A process for forming a cast product or component, including one or more parts having a passage or cavity on at least one side such as a stator or rotor from aluminium or magnesium alloy, comprises supporting one or more preformed insert or inserts for example stainless steel in association with a mould part or parts which define(s) the passage or cavities during the casting process, surrounding the mould part(s) with one or more other mould parts which define the balance of the product or component shape, filling the mould with molten material, and allowing the product to cool and removing the mould parts to leave the cast product with the preformed inserts cast in situ as an integral part or parts of the cast product or component. Typically the process is a sand casting process. Typically the preformed insert(s) are formed of a stronger or more wear-resistant material than the material from which the balance of the product is cast, such as stainless steel.

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First Claim