Metal founding – Process – Shaping a forming surface
Patent
1992-01-29
1993-10-05
Lin, Kuang Y.
Metal founding
Process
Shaping a forming surface
164 28, 164369, B22C 910
Patent
active
052496180
ABSTRACT:
A method of making a complex ceramic core for use in a metal casting process of the lost wax type, the core having at least one recess which extends into the interior of the core and being intended for use in the manufacture of a hollow component having internal cavities and partitions, including successive and superimposed injections of at least two compounds, one of which is degradable without harming the other(s), in at least one mold to produce a solid body wherein the other(s) of the compounds forms said core and the degradable compound fills the recesses of the core. The first injection creates a blank from one or other of the compounds, and each successive injection forms a layer which covers, at least partly, the outer surface of the blank obtained after the preceding injection until the solid body is completed. The body is then treated to remove the degradable compound and thereby leave the desired complex core.
REFERENCES:
patent: 2906495 (1959-09-01), Schum et al.
patent: 2977089 (1961-03-01), McCarthy et al.
Patent Abstracts of Japan, vol. 7, No. 133(M221) [1278], Jun. 10, 1983, & JP-A-58-48702, Mar. 22, 1983, S. Kobayashi, et al., "Air Cooled Vane in Gas Turbine".
Burkarth Nadine
Marty Christian
Lin Kuang Y.
Societe Nationale d'Etude et de Construction de Moteurs d'Aviati
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