Compression casting method and apparatus therefor

Details Compression casting method and apparatus therefor Compression casting method and apparatus therefor

1991-01-29

1991-12-31

Batten, Jr., J. Reed

Metal founding

Process

Shaping liquid metal against a forming surface

164 41, 164154, 164284, B22D 2713

Patent

active

050763415

ABSTRACT:
A casting is formed, by compression casting, in a mold having a casting cavity which is formed by at least an outer mold die and a sand core. After feeding a molten metal into the casting cavity through a pouring gate, a compressive pressure, maintained at a lower extreme of approximately 2.5 atmospheres, is applied to the molten metal through the pouring gate in an early stage of solidification of the molten metal. The compressive pressure is varied, either gradually or quickly, to an upper extreme of approximately 10 atmospheres as the solidifcation of the molten metal progresses past an early stage of solidification, and is at this time applied to the solidifying molten metal through the sand core.

REFERENCES:
patent: 2406333 (1946-08-01), Jensen

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