Process of compacting moulding sand
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United States of America Patent
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-
Nov 15, 1983
Grant Date -
N/A
app pub date -
Oct 2, 1980
filing date -
Feb 2, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for compacting moulding sand to form a casting mould comprises the steps of filling a moulding space located between a pattern plate and a pressure plate with moulding sand, pre-compacting the moulding sand, after the moulding space is filled with moulding sand and closed by the pressure plate, by an explosive-type shock pressure, and subsequently re-compacting the moulding sand by mechanically pressing the moulding sand between the pattern plate and the pressure plate.
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