Investment Casting

Wax is injected into a metal mold, cooled, and removed. Waxes are mounted on wax sprues (trees) and dipped in ceramic multiple times to create a shell. Wax is removed by steam autoclave, shell is fired, and molten metal poured into it. When cooled, the shell is broken to remove the parts.

  • All castable metal alloys
  • Near net shape dimensions
  • Can eliminate many secondary operations
  • Excellent surface finish, typical 125 RMS
  • Thin walls, little or no draft required
  • Ounces to 2000 lbs.
  • Low to medium tooling costs
  • 1 to 1000s of parts
  • No restrictions on design

CASTING PROCESS DETAIL COMPARISONS

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