Industrial furnaces for the heat treatment of metallic workpieces
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United States of America Patent
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-
Jul 14, 1981
Grant Date -
N/A
app pub date -
Oct 15, 1979
filing date -
Oct 14, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An industrial furnace, particularly a single-chamber vacuum furnace, for heat treatment of metallic workpieces, with a heating chamber which is formed in a housing, which heating chamber is heatable via heating elements and is provided on the bottom and on the ceiling with a closable chamber opening for the passage of a quenching gas which can be circulated by means of a blower. A flap is swingably mounted at the chamber opening underneath a closing slide, which chamber opening is provided for the entrance of the gas. The flap controls the incoming flow of gas within the range of the free cross-section of the chamber opening.
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