Method and apparatus for the production of flaskless foundry mol

Details Method and apparatus for the production of flaskless foundry mol Method and apparatus for the production of flaskless foundry mol

1986-01-29

1988-02-16

Jordan, M.

Metal founding

Process

Shaping a forming surface

164 12, 164 29, 164 37, 164 38, 1641601, 164169, 164195, B22C 1528

Patent

active

047248882

ABSTRACT:
A method and apparatus for producing flaskless foundry molds made up of copes and drags of wet casting foundry sand, which is blasted into a cavity to form the mold with the use of vacuum. The sand is pressed mechanically while aspirating air therefrom. The gap coming into existence between the pressing plate and the back side of a mold during pneumatic impact compaction is filled with sand before pressing so that a flat back side is produced on the mold so that when casting takes place later there is not danger of the bottom of the mold fracturing or of deformation taking place.

REFERENCES:
patent: 4318437 (1982-03-01), Kemp
patent: 4586555 (1986-05-01), Buhler
patent: 4593740 (1986-06-01), Buhler

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