Allmanna Svenska Elektriska Aktiebolaget

Kare Folgero

Karl-Erik Oberg

Lars-Gunnar Norberg

Conny Andersson

Bengt Fredrikson

Bengt Fredriksson

Steinar Steinarson

Birger Hedberg

A metallurgical furnace vessel is provided with means for injecting fluid into a melt in a vessel, the fluid carrying materials reactive with the melt and incidentally causing rapid erosion of the vessel's wall portion above the location where the fluid is injected. This wall portion is provided with cooling means and is made so that it can be removed for repair or replacement.

Metallurgical furnace having fluid injection means for a melt in the

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.

Melt casting apparatus

Apparatus for melting, holding and tapping metals or metal alloys, in which solid material is melted down in a channel-type induction furnace, the melt then being transferred to a second channel-type induction furnace to be kept hot, possibly over-heated and stored, characterized in that the melting furnace is connected to the second furnace by way of a feeding channel and is located at a higher level than the second furnace and that the second furnace is in the form of a pressure furnace for pressure tapping through a spout. As a further characterizing feature, the tapping spout is provided with a tun dish in which sub-atmospheric pressures can be obtained to control the tapping through the spout.

Means for tapping

A metallurgical furnace has a wall contacted by molten metal and having a nozzle opening below the level of the metal, a nozzle positioned in this opening forms a passage for injecting a blast into the metal, and this nozzle has means for liquid-cooling the outer end of its blast passage to freeze the molten metal when flowing backwardly through the nozzle's passage in the event of a blast failure. In such an event, the frozen or solidified metal forms a stopper for the nozzle's passage.

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Vasteras, Sweden

Kare Folgero