Stopper rod
AssigneeRefactory Intellectual Property GmbH & Co KG
InventorsGerald Nitzl, Norman Edward Rogers
Life of this patent
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Abstract
A stopper rod comprises an elongate body having an inlet at an upper first end and an outlet at a lower second end. The second end of the body defining a nose for insertion into a tundish outlet. A continuous axial bore extends through the body from the inlet in the first end to the outlet in the second end. A restrictor having an inlet, an outlet and a passageway therebetween, is positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end. A gas supply conduit is arranged to supply gas into the axial bore above the inlet of the restrictor.
Claims12
A stopper rod comprising:
- an elongate body having an inlet at an upper first end and an outlet at a lower second end, the second end of the body defining a nose for insertion into a tundish outlet;
- a continuous axial bore extending through the body from the inlet to the outlet;
- a restrictor having an inlet, an outlet and a passageway therebetween, said restrictor being positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end;
- and
- a gas supply conduit arranged to supply gas into the axial bore above the inlet of the restrictor.
Dependencies are inferred from the claim text.