Method for compressing granular molding materials

Details Method for compressing granular molding materials Method for compressing granular molding materials

1991-04-19

1992-11-10

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164195, B22C 1528

Patent

active

051615967

ABSTRACT:
Foundry moldings are manufactured in an economic manner without increasing cycle time comprises a 3-stage method including the steps of feeding the molding material by means of compressed air into a molding container and thereafter precompressing the molding material by applying a pressure surge to the surface thereof and thereafter recompressing said precompressed molding material to final compression. The resulting foundry moldings are homogeneous in structure and structural integrity.

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patent: 4415015 (1983-11-01), Zadera
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patent: 4828007 (1989-05-01), Fischer et al.
patent: 4828013 (1989-05-01), Fischer
patent: 4860817 (1989-08-01), Joern et al.
patent: 4921035 (1990-05-01), Leutwiler
patent: 5020582 (1991-06-01), Damm et al.
patent: 5024161 (1991-06-01), Fischer et al.

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