Dispensing – Molten metal dispensing – With subjacent flow guide
Patent
1986-12-29
1989-12-19
Shaver, Kevin P.
Dispensing
Molten metal dispensing
With subjacent flow guide
222591, B22D 4100
Patent
active
048877484
ABSTRACT:
An apparatus and method for attaching the submerged nozzle to the lower plate of a sliding gate valve mechanism in a system in which such an assembly is replaceable during a continuous casting operation is disclosed in which the coupling of the lower plate to the submerged nozzle is achieved by way of a bayonet-type attachment between a lower plate container and a submerged nozzle retainer that is uniformly adjustable during operation. The assembly is first tightened snugly in a pre-operative condition, then loaded into an operative position where, after thermal and mechanical forces have acted on the assembly, it is adjusted into a fully tightened operational condition. At all times when the assembly is in (1) the pre-operative snug condition, (2) the operating fully tightened position, and (3) the full range of positions in between, handles are positioned wholely under the lower plate container, whereby unobstructed replacement and adjustment can take place. Additionally, argon is introduced into an annular pocket within the submerged nozzle retainer and around the joint to cool the relative components and serve to buffer the sealed joint from atmospheric gases.
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patent: 4480771 (1984-11-01), Meier
Huson Gregory L.
J. W. Hicks, Inc.
Shaver Kevin P.
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