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US 4,538,670 AGranted
Method and apparatus for pouring molten metal in a neutral atmosphere
OwnerMicheal D. LaBateinventor
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OwnerMicheal D. LaBateinventor
Estimating the term…
A method and apparatus for pouring molten metal in a neutral atmosphere into an ingot mold, a trumpet funnel for bottom poured ingots or a tundish box for a continuous caster or like vessel is disclosed wherein the receiving vessel is closed about a ceramic sleeve through which the molten metal is poured and wherein the normal atmosphere is replaced by vaporized hexamethylene or cyclohexane as it is sometimes called. The closure about the ceramic sleeve through which the molten metal is introduced into the receiving vessel is positioned on top of the receiving vessel and supports the ceramic sleeve and is provided with break lines or scores that permit the edge portions of the sheet-like closure to be moved in hinged relation thereto when the sheet-like closure is pushed downwardly into the receiving vessel to a point on or near the surface of the molten metal.
The combination of a molten metal receiving vessel having substantially vertically standing walls and means for closing said vessel to the atmosphere and directing molten metal into said closed vessel;
A closure for a tundish of a continuous caster and the like, said closure comprising a heat resistant fiberboard having an opening therein, a heat resistant sleeve positioned in sealing relation in said opening and extending upwardly above said closure and downwardly below said closure and having open upper and lower ends, said closure having score lines to enable said closure to be moved from a first position on said tundish to a second position in said tunish for engaging hot metal therein and arranged to float on said hot metal when the level of said hot metal falls below said second position.
The method of pouring molten steel into a tundish on a continuous caster in an oxygen free atmosphere comprising the steps of sequentially;
The method of pouring molten steel into an ingot mold in an oxygen free atmosphere comprising the steps of sequentially;
Dependencies are inferred from the claim text.