Fabrication of shell investment molds

Details Fabrication of shell investment molds Fabrication of shell investment molds

1976-10-12

1978-12-26

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3835, 106 389, B28B 734

Patent

active

041314751

ABSTRACT:
Investment casting molds embody an alumina-silica composition for at least the primary coatings which comprises a flour mixture consisting of at least two different sizes of fused alumina. The grain sizes range from approximately 240 mesh to approximately 400 mesh, U.S. Standard or Tyler screen series.

REFERENCES:
patent: 2491096 (1949-12-01), Feagin
patent: 2521839 (1950-09-01), Feagin
patent: 2790218 (1957-04-01), Kohl et al.
patent: 3436235 (1969-04-01), Baer, Jr. et al.
patent: 3878034 (1975-04-01), Bever et al.
patent: 3894572 (1975-07-01), Moore, Jr.

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