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Sand Casting for Non Ferrous Castings

Sand casting offers the simplest medium for production of non ferrous castings, by pouring molten zinc, aluminium or copper into a sand mould. 

When is Sand Casting used? The sand casting process is chosen for the production of: small numbers of castings a complex shaped casting requiring intricate cores a large non ferrous casting Advantages of sand casting include: low tooling costs largest casting sizes achievable very low gas porosity is possible general versatility of the process is good  Limitations include: low casting rate 3-5mm minimum wall thickness poor linear tolerance (e.g. 4mm/m) rough surface finish coarser grain size than gravity die casting