| The
presence of any amount of water
in ADVANCER® (silicon nitride-bonded silicon carbide)
refractory components during the rapid heat-up process of the
product may cause the product's surface to explode. Accordingly, it
is important to protect all ADVANCER® refractory components
from any moisture including
rain, condensation, or other penetrating moisture.
To avoid the product's contact with
moisture that may form as a result of the product's packaging, the
shrink-wrap surrounding the product should be removed
immediately upon arrival at the customer's site.
If any ADVANCER® refractory
components come in contact with any form of moisture, the
product must be completely dried before it is used at temperatures
exceeding 212°F (100°C). As a general guide for drying
of ADVANCER® refractory components, the product must be held
slightly above the boiling point of water for a sufficient length of
time to expel any moisture as much steam as possible.
Under ideal conditions, a circulating
hot air dryer is recommended for drying of ADVANCER®
refractory components. If
a static hot air dryer, furnace, or kiln is used to dry ADVANCER®
refractory components, the soak times should be extended for an
additional 4-8 hours (depending on the load) in order to ensure that
no condensation occurs as a result of cooling. |
|
To
eliminate damage or complete destruction of ADVANCER® refractory
components that have come in contact with moisture, completely dry
the product as follows.
-
Heat
from ambient to 210°F as a rate of 50°F/HR
-
Slow
heating rate to 25°F/hour to 230°F.
-
Hold
at 230°F (approximately 2-4 hours) ensuring that the
entire load has reached the soak temperature before the timing
of the soak has begun.
-
Raise
temperature to 350-500°F at a rate of 100°F/Hour.
-
Hold
soak temperature for 8 hours ensuring that the
entire load has reached the soak temperature before the timing
of the soak has begun.
-
Cool
naturally/slowly by turning off the heating source.
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