Heating – Processes of heating or heater operation – Continous strip – strand or web passed longitudinally through...
Patent
1987-07-20
1989-06-06
Yuen, Henry C.
Heating
Processes of heating or heater operation
Continous strip, strand or web passed longitudinally through...
432 72, 432 59, F27B 928
Patent
active
048367745
ABSTRACT:
The present invention relates to method and apparatus for heating a strip of metallic material in a continuous annealing furnace and more particularly to an improvement relating to a method and apparatus for heating a strip of metallic material in a continuous annealing furnace in which annealing of the strip is continuously carried out in such a manner that a gas, serving to adjust temperature of the strip, is blown toward the strip through a plurality of gas jet nozzles which are arranged on one side or both sides of the strip, wherein the temperature and flow rate of the strip are properly determined to a required level in response to the changing of the operating conditions such as the heat cycle, line speed, thickness of strip, width of strip and the like. Further, the present invention relates to a method and apparatus for heating a strip of metallic material in a continuous annealing furnace, wherein the temperature of the strip is controlled to reach a target temperature by heating or cooling the strip by means of a gas jet or the like having excellent respondency at a part of the heating zone in the continuous annealing furnace whereby irregular annealing of the strip is effectively inhibited.
REFERENCES:
patent: 3186694 (1965-06-01), Beggs
patent: 3604824 (1971-09-01), Haridson
patent: 3917444 (1975-11-01), Cantlew
patent: 4098007 (1978-07-01), Davis et al.
patent: 4363472 (1982-12-01), Shimoyama et al.
Fukushima Takeo
Furukawa Kusuo
Harada Masahiro
Nakajima Yasuhisa
Ohta Norio
Kawasaki Steel Corporation
Mitsubishi Jukogyo Kabushiki Kaisha
Yuen Henry C.
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