Low pressure molten metal casting device

Details Low pressure molten metal casting device Low pressure molten metal casting device

1978-02-16

1979-12-25

Baldwin, Robert D.

Metal founding

With safety control means

164306, 164156, B22D 1732, B22D 1706

Patent

active

041801210

ABSTRACT:
A low-pressure molten metal casting device comprising a level detector or sensor disposed in a column disposed downstream of the smelting furnace and upstream of the casting leading inlet feed openings of a distribution chamber connected to the moulds. This sensor co-acts with a mechanism controlling the pressure of an inert gas in the furnace for regulating the metallostatic casting overpressure as a function of the selected casting level in order to monitor the furnace pressure and consequently the casting by moving the sensor according to a predetermined law or with the assistance of the gas pressure in the column, so as to reduce any idle periods between successive castings cycles by pre-rising the molten metal by using the level sensor, the latter comprising preferably a pair of staggered electrodes.

REFERENCES:
patent: 3591052 (1971-06-01), Nef
patent: 3761218 (1973-09-01), Portalier
patent: 3880222 (1975-04-01), Chatourel et al.
"The German Printed Publication" No. 1,124,195, Auslegeschrift 2/62.
"The German Printed Publication" No. 2,111,462, Offenlegungsschrift, 9/72.

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