Pressure pouring furnace

Details Pressure pouring furnace Pressure pouring furnace

1982-08-06

1984-02-21

Rutledge, L. Dewayne

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

With means to discharge molten material

266236, B22D 3900

Patent

active

044325355

ABSTRACT:
In accordance with this invention, a weir having a given height is provided on the bottom of a molten metal pouring chamber in a pressure pouring furnace so as to surround the periphery of a pouring nozzle port provided on the bottom of the pouring chamber. The molten metal level in the pouring chamber is set to a prelevel corresponding almost to the height of the weir before pouring. The necessary shot pressure to yield a given pouring rate at the time of pouring is thereby adjusted to a smaller pressure than necessary in conventional furnaces, which reduces the lag time between the issuance of a pouring command and the commencement of the pouring operation, thus improving the pouring work efficiency and precision of the furnace.

REFERENCES:
patent: 1092938 (1914-04-01), Mellen
patent: 3052936 (1962-09-01), Hamilton
patent: 3504825 (1970-04-01), Diamond et al.
patent: 3810564 (1974-05-01), Allyn et al.
patent: 3998365 (1976-12-01), Lethen et al.
"Zur Giessgenauigkeit von pneumatisch betatigten Giessofen" by Horst Hellerling, Dusseldorf, und Kjell Bergmann, Vasteras, Schweden, Giesserei 65 (1978) No. 25-Dec. 7, pp. 706-709.
"Stand der Mechanisierung und Automatisierung beim Vergiessen von Eisen-Kohlenstoff-Legierungen" by Heinz Wubbenhorst, Essen, Giesserei 60 (1973) No. 13, pp. 384-388.

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