Retort for achieving thermal uniformity in induction processing of organic matrix composites or metals
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United States of America Patent
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-
Jul 8, 1997
Issued Date -
N/A
app pub date -
Jun 6, 1995
filing date -
Apr 5, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For forming or consolidating organic matrix composites, for example, an organic matrix composite panel is sealed in a 'retort' between sheets of a susceptor material that is susceptible to induction heating. The susceptor sheets are heated inductively. The sheets in turn conduct heat to the organic matrix composite panel. When heated to the desired temperature, the composite panel is consolidated and/or formed. In the present invention, the susceptor sheets are selected so that their magnetic permeability decreases to unity at approximately the desired operating temperature thereby limiting heating to this 'Curie temperature' and providing substantial uniformity of temperature in the panel. Of course, the concept applies to other induction heating operations for metals including SPF, brazing, annealing, heat treating, bonding, hot pressing, and the like.
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