Method for compacting an article of powder material and for ejec

Details Method for compacting an article of powder material and for ejec Method for compacting an article of powder material and for ejec

1980-09-02

1981-11-24

Flint, Jr., J. Howard

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

425 78, 425352, B30B 1102

Patent

active

043024122

ABSTRACT:
A method for compacting powder material into an article comprising pouring the powder material in a die cavity formed above a lower punch disposed in the die cavity, retracting the lower punch to a small distance, introducing an upper punch into the die cavity, advancing the lower punch towards the upper punch and advancing the upper punch towards the lower punch at a rate greater than the advance of the lower punch, and extracting the compacted article from the die cavity by holding it between the upper and lower punch.

REFERENCES:
patent: 1636962 (1927-07-01), Jacobson
patent: 2570989 (1951-10-01), Seebig
patent: 2735380 (1956-02-01), Bowes
patent: 3149375 (1964-09-01), Gehl
patent: 3593366 (1971-07-01), Smith
patent: 3758245 (1973-09-01), Hermes
patent: 3775032 (1973-11-01), Smith et al.
patent: 3826599 (1974-07-01), De Santis et al.
patent: 3890413 (1975-06-01), Peterson
patent: 3989438 (1976-11-01), Smith
patent: 4000231 (1976-12-01), Peterson
patent: 4184827 (1980-01-01), Von Hermann et al.

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