A typical outgassing
process would entail the following:
After
receipt and inspection, the component would be documented.
At this time, an optional pre-bake (up to 500F) would be performed
to reduce the vacuum oven gas load and schedule.
The
article would then be placed in the vacuum oven, or in the
case of feedthru/harness it would then be "fed through"
the oven end plate.
The
oven would then be preheated to the specified bake temperature
while monitoring thermocouple set points for hot spots. The
oven would be vented to atmosphere during this procedure.
Upon
reaching temperature, the mechanical cycle would be initiated.
Roughing proceeds until a maximum vacuum level of 100u is
reached.
At
100u, valve sequencing would expose the heated oven to the
high vacuum pump. Pumping continues until either the target
vacuum level is attained for the specified time (eg. 10 Torr
for 72 hours.) or the desired atmosphere in the chamber, as
determined by the RGA is achieved.
The
chamber would then be back filled with dry N2 and upon cool
down the product would be packaged in antistatic, heat sealed
bags with optional desiccant.
The entire process is data logged and a record
can be provided with each component.
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