Heat shielding apparatus for vertical continuous annealing furnace
AssigneeKawasaki Steel Corporation
InventorsNaoto Ueno, Sachihiro Iida, Takaaki Kobashi, Motoki Imamura
Life of this patent
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Abstract
A shielding apparatus for intercepting heat from a heating source disposed in a vertical continuous annealing furnace includes a double-walled tube having an outside atmosphere suction port projected horizontally or downward to be exposed to an outside atmosphere, and an exhaust port projected upward to be exposed to the outside atmosphere.
Claims18
A heat shielding apparatus for a vertical continuous annealing furnace including upper and lower portions and a plurality of rolls arranged in the upper and lower portions, heat treatment is performed on a metal strip continuously transported in the vertical direction by the rolls while changing a travel direction from upward to downward, or from downward to upward, as the metal strip turns around each of the rolls, the heat shielding apparatus is positionable just below a roll in the upper portion of the furnace and/or just above a roll in the lower portion of the furnace, the heat shielding apparatus comprising:
- at least one double-walled tube, each double-walled tube including:
- an outside atmosphere suction port projected horizontally or downward to be exposed to an outside atmosphere;
- and
- an exhaust port projected upward to be exposed to the outside atmosphere.
A vertical continuous annealing furnace, comprising:
- upper and lower portions;
- a plurality of rolls arranged in the upper and lower portions;
- wherein heat treatment is performed on a metal strip continuously transported in the vertical direction by the rolls while changing a travel direction from upward to downward, or from downward to upward, as the metal strip turns around each of the rolls;
- a heat shielding apparatus disposed just below a roll positioned in the upper portion of the furnace and/or just above a roll positioned in the lower portion of the furnace, the heat shielding apparatus comprising:
- at least one double-walled tube, each double-walled tube including:
- an outside atmosphere suction port projected horizontally or downward so as to be exposed to an outside atmosphere;
- and
- an exhaust port projected upward so as to be exposed to the outside atmosphere.
Dependencies are inferred from the claim text.