Method for compacting foundry mold making materials

Details Method for compacting foundry mold making materials Method for compacting foundry mold making materials

1982-12-27

1985-07-16

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

B22C 1500

Patent

active

045290261

ABSTRACT:
In a process for compacting foundry mold making material, that is loosely heaped in a closed mold space over a pattern, the surface of the material is acted on by a compressed gas with a pressure of at the most 8 bar. This gas is caused to undergo expansion out of an inlet space through a valve in an opening at a gas flow rate of over 50 kg/sec and with a pressure increase rate of over 300 bar/sec, into the mold space. The maximum pressure in the inlet space or antichamber is 20 bar.

REFERENCES:
patent: 3659642 (1972-05-01), Vasilkovsky

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