Hearth roll apparatus for annealing furnace

Details Hearth roll apparatus for annealing furnace Hearth roll apparatus for annealing furnace

2011-04-05

2011-04-05

King, Roy (Department: 1733)

Metallurgical apparatus

Means for holding or supporting work

C266S249000, C266S276000, C266S103000, C432S121000, C432S246000

Reexamination Certificate

active

07919041

ABSTRACT:
A hearth roll apparatus for feeding a strip sheet in an annealing furnace is disclosed. The hearth roll apparatus includes a ceramic tube which is provided inside the annealing furnace to contactingly feed a strip sheet, a roll shaft which is coupled to a first end of the ceramic tube and extends across the annealing furnace through the ceramic tube, a tube fixing sleeve which is coupled to a second end of the ceramic tube and through which a portion of the roll shaft is inserted, and a tension generating unit which interlocks with the roll shaft and the tube fixing sleeve and supplies a tensile force for stretching the roll shaft in a longitudinal direction. Accordingly, thermal deformation like creep buy which the roll shaft is bent down is minimized, and a line speed of the strip sheet can be increased by high-speed rotation of the hearth roll.

REFERENCES:
patent: 64-055325 (1989-02-01), None
patent: 1139716 (1989-06-01), None
patent: 1147017 (1989-06-01), None
patent: 8295948 (1996-11-01), None
patent: 20030054539 (2003-07-01), None
patent: 2005-0080640 (2005-08-01), None

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