Method of controlling pressurizing pin and casting apparatus with pressurizing pin controller
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United States of America Patent
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Apr 29, 1997
Grant Date -
N/A
app pub date -
Jun 23, 1995
filing date -
Jun 29, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The disclosed method of controlling a pressurizing pin, which serves to replenish for the necessary locality with molten metal during solidification of molten metal charged in the cavity, features that the operation of the molten metal replenishment by the pressurizing pin is caused when it is detected that the volume of non-solidified metal has become less than the volume effective for obtaining a molten metal replenishment effect. It is thus possible to obtain efficient replenishment for the necessary locality with molten metal by using a pressurizing pin which is limited in size and stroke.
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