Process of heating and cooling charges in batch-process industrial furnaces
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United States of America Patent
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-
Feb 18, 1986
Grant Date -
N/A
app pub date -
Jun 26, 1984
filing date -
Jul 5, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a process of heating and cooling charges in batch-process industrial furnaces, particularly in a process of cooling coils of steel wire or strip steel in bell-type annealing furnaces, the charge is heated and cooled in contact with circulated protective gas. The cooling time is shortened and the power input to the circulating fan is reduced by changing the composition of the protective gas so as to decrease the specific gravity of the protective gas just before the beginning of the cooling period and/or during the cooling period.
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