Metal founding – Means to shape a forming surface
Patent
1985-06-27
1987-02-24
Miles, Tim
Metal founding
Means to shape a forming surface
249135, 249 81, 62356, B22C 902
Patent
active
046449957
ABSTRACT:
The device comprises a fixed gassing box (1) a moulding box (2) and a head (2A) for receiving and discharging gas. The box (2) is provided with a massive block (7) of aluminium which forms a pattern-plate and has a multitude of orifices (8) extending therethrough. This block has a sufficient thermal inertia to form a frozen crust as soon as the moulding box (2) is filled with a pre-moistened sand or the like. This permits obtaining a high rate of production of frozen moulds or cores having a very good surface condition, a good stability of shape and high and homogeneous mechanical properties.
REFERENCES:
patent: 3587709 (1971-06-01), Miller et al.
patent: 4312397 (1982-01-01), Harris et al.
Defrancq Charles
Goumy Daniel
L'Air Liquide Societe Anonyme pour l'Etude et, l'Exploitation de
Miles Tim
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