Compositions: coating or plastic – Coating or plastic compositions – Molds and mold coating compositions
Patent
1976-09-08
1978-12-05
Hayes, Lorenzo B.
Compositions: coating or plastic
Coating or plastic compositions
Molds and mold coating compositions
106 383, 106 389, 106 65, 106 69, 164 26, B28B 734
Patent
active
041284313
ABSTRACT:
A composition for making shell investment molds for the casting and solidification of superalloys therein embodies preparing a primary slurry composition of a mixture of three different flour grain sizes of fused alumina and a silica binder. The flour grain sizes range from approximately 240 mesh to approximately 400 mesh, U.S. Standard or Tyler screen series.
REFERENCES:
patent: 3436235 (1969-04-01), Baer et al.
patent: 3445250 (1969-05-01), Preece
patent: 3754945 (1973-08-01), Moore
Cohen Joseph T.
General Electric Company
Hayes Lorenzo B.
Watts Charles T.
Winegar Donald M.
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