Retort furnace for heat and/or thermochemical treatment
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United States of America Patent
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Aug 25, 2015
Grant Date -
Oct 28, 2010
app pub date -
Feb 9, 2010
filing date -
Feb 12, 2009
priority date (Note) -
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Abstract
A retort furnace for heat and/or thermochemical treatment designed for technological process in protective gas atmosphere, process gas atmosphere or in vacuum, and used inter alia for annealing pipes made of austenitic alloys, having among other things: a cylindrical outer body with a lid equipped with an active thermal barrier, a cylindrical retort, thermal insulation, a heating system located in the thermal insulation, a cooling system of the furnace. The active thermal barrier constitutes the radiation screens, in the form of at least two metal boards, installed on brackets located at the lid inside the retort. Additionally, radiation caulking rings are located in the extreme areas of the brackets and, circumferential sealing rings are permanently fixed in the casing of the retort.
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