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US 3,970,283 AGranted
Pouring of molten metals
AssigneeUnited States Steel Corporation
InventorRobert Duncan Hind
Life of this patent
Estimating the term…
Abstract
A sliding gate valve has a sliding plate provided with an under-hung insulating member having a hollow nose, the hollow nose having a tapered bore in which a molten metal resistant liner is cemented, the liner being tapered to fit the bore and a frangible cement being used to detachably secure the liner in the nose so that the liner can be readily replaced when worn.
Claims3
In a sliding gate which includes a refractory sliding plate having an orifice, and a collector nozzle extending from said plate in line with said orifice,
- the improvement in which said nozzle comprises:
- an insulating tubular refractory member having a downwardly tapered bore;
- a tubular liner of erosion-resistant refractory within said tapered bore and having a conforming downwardly tapered outer surface and a cylinderical bore;
- and
- a layer of frangible refractory cement between the tapered surfaces of said tapered bore and said liner affixing said liner within said member;
- said liner being readily removable from said member on breaking of said cement.
3 more elements
Dependencies are inferred from the claim text.