Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1986-02-18
1987-12-08
Jordan, M.
Metal founding
Process
Shaping liquid metal against a forming surface
164119, 164154, 164259, 164306, B22D 2300
Patent
active
047112905
ABSTRACT:
A casting furnace is fed an inert gas under pressure through a feed line with the pressure being regulated by a melt level control device. When the pressure is reduced, the inert gas is exhausted from the casting furnace by an exhaust line, the feed line having a check valve to prevent gas which is contaminated by magnesium from entering the feed line. An oxidizing gas, preferably pressurized air, is periodically fed into the exhaust line by an oxidizing gas line for cleaning the drain line and the pressure-controlling aperture therein by oxidizing the magnesium.
Dersch Stefan
Riethmann Max
Rietzscher Rolf
Farley Walter C.
George Fischer Ltd.
Jordan M.
Seidel Richard K.
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