Dispensing – Processes of dispensing – Molten metal
Patent
1996-10-21
1998-12-08
Sheehan, John
Dispensing
Processes of dispensing
Molten metal
222595, 266 45, 266239, B22D 3700
Patent
active
058464450
ABSTRACT:
By a method that may be used for transferring molten metal by using pressurized gas, molten metal in a metal furnace is automatically sucked into a molten metal chamber installed within the metal furnace through a fluid suction pipe by a balanced pressure inside the chamber. Then, when the molten metal sucked into the chamber is transferred to a specified position through a fluid feed pipe by applying a pressurized gas from an upper part of the chamber, the flow rate of the molten metal at the junction part between the fluid suction pipe and feed pipe or at the opposed part of an open end of the fluid suction pipe against that of the fluid feed pipe is accelerated, creating a higher flow rate at other parts of the fluid feed pipe. A molten metal transfer apparatus includes a molten metal chamber installed in a metal furnace and having a tightly closed upper part. The molten metal chamber is connected with an inlet/outlet pipe for pressurized gas and the lower part of the chamber is connected with a base part of a fluid feed pipe. In the vicinity of the base part of the fluid feed pipe, a fluid suction pipe is connected, and the other end is opened at the lower part of the metal furnace, and the cross-sectional area of the fluid feed pipe at the junction between the suction pipe and the feed pipe is contracted so as to be smaller than that at other parts of the feed pipe.
REFERENCES:
patent: 2846740 (1958-08-01), Edstrand
patent: 3876191 (1975-04-01), Lauerdorf
patent: 4425932 (1984-01-01), Herman
patent: 5190674 (1993-03-01), Monks
Ariake Ceramic Constructions Co., Ltd.
Sheehan John
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