Process for compressing granular material in a molding box

Details Process for compressing granular material in a molding box Process for compressing granular material in a molding box

1994-10-21

1997-02-11

Dawson, Robert A.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Bulk deposition of particles by differential fluid pressure

264547, 264120, 164 38, 164169, B27N 302

Patent

active

056017774

ABSTRACT:
A process for compacting foundry molding material is proposed, the molding material being introduced into a molding device with a pattern plate with a pattern frame and a molding and filing frame mounted on it, by means of a compressed gas, the compressed gas being used at least for precompaction, the pressure surge used for the precompaction being released into the molding floor with a low, then a higher pressure gradient.

REFERENCES:
patent: 4828007 (1989-05-01), Fischer et al.
patent: 5020582 (1991-06-01), Damm et al.
patent: 5024161 (1991-06-01), Fischer et al.
patent: 5161596 (1992-11-01), Fischer et al.
patent: 5348070 (1994-09-01), Fischer et al.

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