Novel sand/silicate compositions for foundry molds/cores

Details Novel sand/silicate compositions for foundry molds/cores Novel sand/silicate compositions for foundry molds/cores

1978-12-18

1980-11-11

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 383, 106 84, B28B 734

Patent

active

042330769

ABSTRACT:
Foundry mold and core compositions comprising sand, a silicate binder and a hardening agent include an alumina "demolding" agent having an average grain size distribution of less than 40.mu., preferably between 0.2 and 5.mu..

REFERENCES:
patent: 2491096 (1949-12-01), Feagin
patent: 2883723 (1959-04-01), Moore et al.
patent: 3137046 (1964-06-01), Barlow et al.
patent: 3203057 (1965-08-01), Hunt et al.
patent: 3424600 (1969-01-01), Liass et al.
patent: 3558506 (1971-01-01), Bonnel et al.
patent: 4056937 (1977-11-01), Suzuki

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