Investment Casting Process
In theory the casting process is just like photography. An image
is regenerated through the use of negatives and prints but in casting
negatives are molds and our prints are the castings parts.
Process of Investment Casting:
In the investment casting process, a wax pattern is coated with a
ceramic aterial, which, when hardened, adopts the internal geometry of
the desired casting. In most cases, multiple parts are cast together for
efficiency by attaching individual wax patterns to a central wax stick
called a sprue. The wax is melted out of the pattern – which is why it
is also known as the lost wax process – and molten metal is poured into
the cavity. When the metal solidifies, the ceramic mold is broken off,
leaving the near net shape of the desired part. At last, Finishing,
testing and packaging complete the process.