Casting method using consumable pattern

Details Casting method using consumable pattern Casting method using consumable pattern

B - Operations, Transporting

22

C

22/166

B22C 7/02 (2006.01) B22C 9/04 (2006.01)

Patent

CA 1248322

ABSTRACT An improved full mold casting method including the steps of: providing a consumable pattern formed of an expanded polyolefin resin which has a density of 0.025 - 0.012 g/cm3 and which is selected from non-crosslinked polypropylene resins, crosslinked polypropylene resins, crosslinked high density polyethylenes and mixtures thereof; embedding the pattern in a mold body; forming in the mold body a gating system leading to the embedded pattern; and pouring in said gating system molten metal for volatilizing and replacing the embedded pattern in the mold body.

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