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1. (US5756043) Cast refractory base segments and modular fiber seal system for plural-stack annealing furnace

Office : United States of America
Application Number: 08715435 Application Date: 18.09.1996
Publication Number: 5756043 Publication Date: 26.05.1998
Grant Number: 5756043 Grant Date: 26.05.1998
Publication Kind : A
IPC:
C21B 7/04
C21D 9/54
C21D 9/663
C21D 9/673
F27B 11/00
F27D 1/00
F27D 1/16
F27D 23/00
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
7
Blast furnaces
04
with special refractories
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
52
for wires; for strips
54
Furnaces for treating strips or wire
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
52
for wires; for strips
54
Furnaces for treating strips or wire
663
Bell-type furnaces
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
52
for wires; for strips
54
Furnaces for treating strips or wire
663
Bell-type furnaces
673
Details, accessories, or equipment peculiar to bell-type furnaces
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
B
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
11
Bell-type furnaces
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
1
Casings; Linings; Walls; Roofs
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
1
Casings; Linings; Walls; Roofs
16
Making or repairing linings
(Deprecated)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
23
Details or accessories not covered by any other group of this subclass
Applicants: COBLE; GARY L.
Inventors: Coble Gary L.
Agents: Burge David A.
Priority Data: 08032587 21.12.1994 US
08032593 21.12.1994 US
08051615 14.03.1996 US
08051616 14.03.1996 US
08051617 14.03.1996 US
08051620 14.03.1996 US
08051624 14.03.1996 US
08051625 14.03.1996 US
08051626 14.03.1996 US
08051631 14.03.1996 US
08051635 14.03.1996 US
08423009 14.04.1995 US
08423010 14.04.1995 US
08647676 15.05.1996 US
08674996 03.07.1996 US
29032588 21.12.1994 US
29032589 21.12.1994 US
29032590 21.12.1994 US
29032591 21.12.1994 US
29032592 21.12.1994 US
Title: (EN) Cast refractory base segments and modular fiber seal system for plural-stack annealing furnace
Abstract: front page image
(EN)

A rigid ceramic refractory base for a plural-stack annealing furnace--such as an eight-stack furnace that has two "four-stack rows" or "halves" arranged side by side--is assembled atop a base support structure utilizing a novel set of cast refractory segments, including spaced sets of inner segments, with each set of inner segments being surrounded by a sub-set of outer segments. Defined between each set of inner segments and its surrounding sub-set of outer segments is a circular inner seal positioning trough that opens upwardly, and that has a tapered cross section that narrows with depth. A resilient but reinforced inner seal of novel form is installed in each of the troughs, with each of these seals utilizing upper and lower blankets of refactory fiber material that sandwich a plurality of elongate refractory fiber modules arranged end-to-end to circumferentially fill the trough. Each of the modules includes a serial array of compressed, cube-shaped blocks of fiber refractory material that are interspersed with thin, perforated metal members, with each of the arrays of fiber blocks and metal members being held together to form a module by metal rods that extend centrally therethrough and are welded to perforated metal members that cap opposite module ends. Associated methods of fabrication, assembly, use, maintenance, repair and replacement are disclosed.