Metal founding – Means to shape a forming surface
Patent
1984-06-20
1985-04-09
Godici, Nicholas P.
Metal founding
Means to shape a forming surface
164 34, 164412, B22D 2112, B22D 1900
Patent
active
045095795
ABSTRACT:
A fluidization apparatus is adapted for use with a flask containing a particulate bed, for example, a foundry flask used in lost foam metal casting. The apparatus comprises a reciprocal plenum box defining a plenum having a gas outlet and receivable within the flask such that the plenum outlet registers with a perforated partition supporting the particulate bed within the flask. The plenum outlet is covered by an air filter suitable for removing contaminants from compressed air. The plenum box also carries a resilient seal member located about the plenum outlet. When the box is received in the flask, pneumatic lifts mounted upon the box raise the box to seal the box against the partition. Compressed air admitted to the plenum flows from the plenum outlet through the filter, which removes entrained contaminants that might otherwise plug the partition, and thereafter through the partition to fluidize the particulate bed.
REFERENCES:
patent: 3293768 (1966-12-01), Blank et al.
patent: 3557867 (1971-01-01), Krzyzanowski
patent: 3678989 (1972-07-01), Krzyzanowski
patent: 3741281 (1973-06-01), Hauser-Lienhard
patent: 3842899 (1974-10-01), Hauser-Lienhard
Berg Kenneth F.
Fekete Douglas D.
General Motors Corporation
Godici Nicholas P.
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