Foundry mold and core sands

Details Foundry mold and core sands Foundry mold and core sands

1983-11-25

1985-03-19

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3851, 106 388, 106 389, B28B 734

Patent

active

045057508

ABSTRACT:
The addition of a hydrophobic, organophilic, water-wettable fibrous material to foundry sands increases the flowability of the sand and enables the production of molds or cores from the foundry sand which retain the sharp edges of the mold, inhibits expansion defects, and provides a cleaner pattern conformity. The hydrophobic, organophilic, water-wettable fibrous material has negligible smoke and/or fumes and does not waterproof clay binders.
The preferred hydrophobic, organophilic, water-wettable fibrous material is prepared from raw cotton from which the oils have not been removed.

REFERENCES:
patent: 1477064 (1923-12-01), Kleinschmidt
patent: 2686727 (1954-08-01), Wallace
patent: 3418402 (1968-12-01), Grissom et al.
patent: 3958998 (1976-05-01), Atterbury
patent: 4240496 (1980-12-01), El Gammal

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