Ceramic cores for manufacturing hollow metal castings

Details Ceramic cores for manufacturing hollow metal castings Ceramic cores for manufacturing hollow metal castings

1976-11-17

1980-02-26

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3835, 106 65, 106 69, 106 734, 106 735, 164 43, 260375B, B28B 734

Patent

active

041904508

ABSTRACT:
Cores for use in the casting of hollow metal parts by directional solidification from temperatures which may exceed 2700.degree. F., in which the strength, dimensional stability and shape of the core is maintained at such high temperatures by formulating the core to contain Cristobalite in an amount of at least 2.5% by weight.

REFERENCES:
patent: 1932202 (1933-10-01), Coleman et al.
patent: 2072212 (1937-03-01), Moosdorf et al.
patent: 2211133 (1940-08-01), Krosta
patent: 2251610 (1941-08-01), Rost-Grande
patent: 2283611 (1942-05-01), Neiman
patent: 2479504 (1949-08-01), Moore et al.
patent: 3230102 (1966-01-01), Miller
patent: 3234607 (1966-02-01), Hammarlund
patent: 3303030 (1967-02-01), Preston

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