Apparatus for continuous heat treatment of metal strip in coil form
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United States of America Patent
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-
Apr 4, 1989
Issued Date -
N/A
app pub date -
Jul 30, 1987
filing date -
Nov 21, 1984
priority date (Note) -
Expired
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Abstract
Metal strip in coils is heat-treated by impinging jets of a temperature-controlled gaseous medium on the ends of the coils which are positioned with the coil axis horizontal. The medium is recirculated through heat exchangers. A rotating hearth furnace for such heat-treating has an annular hearth which carries coils in intermittent movement through successive stations in which the gaseous medium is directed on the coils.
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