Metal founding – Means providing inert or reducing atmosphere
Patent
1975-09-11
1976-11-16
McGehee, Travis S.
Metal founding
Means providing inert or reducing atmosphere
164337, B22D 2700, B22D 3700
Patent
active
039918130
ABSTRACT:
A metal melt casting apparatus comprises a vessel for containing the melt and having a wall portion having a downwardly pointing melt tapping hole, the vessel tilting so that this wall portion can be raised and lowered. A fountain has a top for receiving the melt when registered with said tapping hole and a bottom for connection with the bottom of a mold. A gas-tight elastically deflectible sealing means interconnects the tapping hole and the fountain top when the mentioned wall portion is lowered thereon by tilting of the vessel. The sealing means is made in the form of two parts which elastically flexibly engage when the converter wall with the tapping hole is lowered on the top of the fountain, one part being connected to the wall and the other part being connected to the fountain. The sealing means is provided with a gas passage so that the tapping metal stream may be subject to evacuation for degassing or surrounded by an inert gas.
REFERENCES:
patent: 124700 (1872-03-01), Sellers
patent: 2976587 (1961-03-01), Daussan
patent: 3013316 (1961-12-01), Hornak et al.
patent: 3125440 (1964-03-01), Hornak et al.
patent: 3305901 (1967-02-01), Gero
Andersson Conny
Folgero Kare
Fredriksson Bengt
Hedberg Birger
Oberg Karl-Erik
Allmanna Svenska Elektriska Aktiebolaget
McGehee Travis S.
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