Crack resistant valve plate assembly for a molten metal slide ga

Details Crack resistant valve plate assembly for a molten metal slide ga Crack resistant valve plate assembly for a molten metal slide ga

1995-08-02

1997-05-06

Ferensic, Denise L.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

222600, 251144, F16L 700

Patent

active

056261640

ABSTRACT:
A crack resistant valve plate assembly is provided for use in a slide gate valve. The valve plate assembly includes a refractory valve plate having an orifice positioned along its longitudinal center line, and truncated corners for focusing a clamping force toward the center line in the vicinity of the orifice to prevent the formation and spreading of cracks. The angular orientation of each of the truncated corners varies with respect to the position of the orifice along the longitudinal center line. Specifically, each of the truncated corners are orthogonal to a line extending from a point tangent with the orifice, across the center line, and through an intersection lines drawn parallel to the converging lengthwise and widthwise plate edges that is spaced from the edges a distance equal to one-half of the maximum diameter of orifice that the plate can effectively operate with.

REFERENCES:
patent: 4508241 (1985-04-01), Bauer et al.
patent: 4524956 (1985-06-01), Bachmann
patent: 4728013 (1988-03-01), Winkelmann et al.
patent: 4840296 (1989-06-01), Otsuka et al.
patent: 5062554 (1991-11-01), Sakai et al.
patent: 5388733 (1995-02-01), Richard
patent: 5431374 (1995-07-01), Janssen et al.
patent: 5470048 (1995-11-01), Taira et al.
patent: 5482192 (1996-01-01), Sato et al.
Kurosaki Refractories Co., Ltd.

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