Device for fabricating frozen moulding moulds or cores

Metal founding – Means to shape a forming surface

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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.

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