Process for making an investment mold for casting and solidifica

Details Process for making an investment mold for casting and solidifica Process for making an investment mold for casting and solidifica

1975-06-27

1977-05-17

Gwinnell, Harry J.

Coating processes

Mold coating

164 25, 427202, B29C 104, B44D 120

Patent

active

040243001

ABSTRACT:
A process for making shell investment molds for the casting and solidification of superalloys therein embodies preparing a primary slurry composition of a mixture of at least two 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: 3583468 (1971-06-01), Cutler
patent: 3751276 (1973-08-01), Beyer et al.
patent: 3754945 (1973-08-01), Moore
patent: 3788380 (1974-01-01), Jasson et al.
patent: 3859153 (1975-01-01), Beyer et al.
patent: 3899612 (1975-08-01), Emblem
patent: 3933190 (1976-01-01), Fassler et al.

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