Metallurgical apparatus – Means treating solid metal – Fluid tight heat transferring box shield or hood
Patent
1987-11-09
1989-03-21
Brody, Christopher W.
Metallurgical apparatus
Means treating solid metal
Fluid tight heat transferring box shield or hood
4322541, C21D 9673
Patent
active
048136549
ABSTRACT:
A base for a heat treating furnace for annealing coils of steel strip. The base supports the coils in a sealed compartment through which an inert gas is circulated, and defines the bottom of the sealed compartment. The base comprises a top plate assembly, a floor, and side walls that define therein a sealed enclosure. The top plate assembly is supported on a plurality of upright, annular, concentric bearing partitions located in the enclosure that slidingly engage the bottom surfaces of the top plate assembly in a manner to accommodate radial thermal expansion and contraction. The spaces between the upright partitions are filled with a lightweight thermal insulating material. The top plate assembly comprises at least two coplanar plate sections located one-within-the-other and joined by an annular expansion joint. The joint has a "U" shape when viewed in cross section and accommodates radial thermal expansion and contraction of the top plate sections relative to one another.
REFERENCES:
patent: 2414996 (1947-01-01), Armstrong
patent: 2504809 (1950-04-01), Dailey, Jr.
patent: 3879167 (1975-04-01), De Luca et al.
patent: 4023782 (1977-05-01), Eifer
Brody Christopher W.
Lee Wilson Engineering Company, Inc.
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