Method of investment casting and a method of making an investmen

Details Method of investment casting and a method of making an investmen Method of investment casting and a method of making an investmen

1997-01-23

1999-02-09

Lin, Kuang Y.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

1641222, 164516, B22C 900, B22D 4600

Patent

active

058681949

ABSTRACT:
A method of making an investment casting mould comprises producing a CAD definition of a turbine blade, and determining the distribution of isosurfaces of constant temperature around the CAD definition of the at least one article if the external surface of the CAD definition of the at least one article was at a high temperature (Thigh). One of the isosurfaces of constant temperature is selected to define the external shape and the thickness of an investment casting mould. A pattern of the turbine blade is produced from the CAD definition of the turbine blade. The investment casting mould is made with an internal shape defined by the pattern of the turbine blade and an external shape and thickness distribution defined by the selected isosurface of constant temperature. The pattern is then removed from the investment casting mould.

REFERENCES:
patent: 5234047 (1993-08-01), Rose

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