Method and device for exchanging the atmosphere in a hood-shaped annealing furnace
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Feb 16, 1996
filing date -
Aug 19, 1993
priority date (Note) -
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Abstract
Fresh gas is blown into the ring-shaped space between the annealing charge and the hood as an upwardly directed high-speed jet (9) at a velocity of approximately 80 m/s. The gas mixture which forms is evacuated through a gas outlet (10) arranged in the pedestal and diametrically opposite to the gas inlet. At a volume flow rate of about 130 m.sup.3 /s, rinsing takes about 6 minutes.
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