Reinforced ceramic investment casting shell mold and method of m

Details Reinforced ceramic investment casting shell mold and method of m Reinforced ceramic investment casting shell mold and method of m

1993-02-25

1994-08-23

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164361, B22C 904

Patent

active

RE0347027

ABSTRACT:
A reinforced ceramic investment casting shell mold and method of making such mold. The ceramic investment casting shell mold includes alternate, repeating layers of a ceramic material and a ceramic stucco defining an overall thickness of the shell mold. A fibrous reinforcing material is disposed in the alternate, repeating layers at an intermediate thickness of the shell mold. The fibrous reinforcing material has high tensile strength at elevated temperature and a coefficient of thermal expansion that is less than the coefficient of thermal expansion of the ceramic material and the ceramic stucco. The fibrous reinforcing material is preferably woven into a twisted yarn and disposed in a generally spiral configuration.

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Patent Abstracts of Japan, vol. 5, No. 65 (Feb. 18, 1981) (JP-A-56-17157).

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