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Tired of lifting heavy kilns shelves
into the gas kiln? Now there is an economical solution so you dont
need to strain your back stacking the kiln. Nitride Bonded silicon carbide
shelves are strong and light weight. For example, a 12 x 24 x 1/2
thick nitride bonded shelf weighs only 14 lbs.! We have
thoroughly tested these shelves in demanding situations with excellent
results. Call us to discuss your application
Built in Relief Joints give added
longevity to the larger shelves. These relief joints prevent
cracking that can occur due to the repeated expansion and contraction of
the shelves during firing. Originally all of our Nitride Bonded shelves
were manufactured with relief joints, however we have recently tested some
of the smaller sizes without them and the customer feedback has been
excellent. Sizes without expansion joints are noted as nc in the
chart below.
Tired of having to rotate shelves to
keep them flat? Nitride Bonded silicon carbide is the answer. Depended
on the weight stacked on the shelves in combination with the temperature
range, chances are you may never have to rotate them.
Important Note: We
recommend only 3 post stacking to prevent rocking and provide even
pressure from the posts and load above. 4 post stacking can cause cracks
from uneven pressure resulting from the weight of the load
above. Clay wads should be used if you are determined to use a 4 post
stack. but since the clay is still viscous, you may still crack a
shelf from the load above.
You can
reduce hours of handling kiln furniture by leaving your furniture
stacked and only replace the wares. The perfectly flat shelf
surface prevents large pots from warping.
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Easy to Lift
The nitride bonded silicon carbide shelves are slightly heavier than
Advancerฎ shelves, but much lighter than High Alumina. Note: Advancerฎ
is still the lightest and strongest composition shelf available and a much
higher quality, rated for Cone 16. Nitride Bonded is rated for
Cone 11 and may need rotation at some point based on extreme peak
temperature, soak time, and amount of weight placed between the
posts.
We use 1/2 on most sizes because our testing has shown
much improved warp resistance at Cone 11. Our customers have been
very satisfied with the results.
Want to get more functional height in
your kiln? For every 5 layers of shelves you save anywhere from 3-3/8
to 2.5 of stacking height compared to conventional 1" shelves.
That can add another shelf layer for every firing. You also reduce the
thermal mass substantially which will result in reduced energy
costs.
Acceptable Tolerances of
Manufacture
The manufacturers of all shelving materials have a factor for
what they consider acceptable manufacturing tolerances and
deviations. A shelf may be perfectly flat when you receive it, or,
it may have a very minor deviation. Nitride Bonded deviation of
acceptability is .5%. This factor is calculated by putting a
straight edge diagonally from corner to corner and measuring a
possible deviation tolerance (if any) in the center of the
shelf. A deviation of this minor degree (.5% of the total length)
does not constitute a "second".
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