Excellent quality refractory Silicon carbide kiln shelves
Benefits such as high thermal conductivity, low mass, light weight,
stability (i.e., no warping), and resistance to glaze sticking and
penetration have gained these kiln shelves increasing acceptance
from artists, educators, production potters, and tile
manufacturers. Despite their popularity, questions are often raised
regarding the appropriateness of the shelves’ use in resistance
element electric kilns. Specifically, “Are they safe to use in my
While it is true that some forms of silicon carbide are
specifically designed to conduct electricity (such as heating
elements), the internal bond matrix—and especially the glassy,
oxide layer that is intentionally fired onto the surface of
Advancer shelves—dramatically lowers their electrical conductivity
compared to other types of silicon carbide kiln shelves. As a
result, the electrical conductivity value of kiln shelf is low
enough to be considered safe for use in top-loading electric kilns.
In addition, as the shelves are fired repeatedly in an electric
kiln’s oxidizing atmosphere, the glassy layer continues to
accumulate and further reduces the rate of conductivity. The use of
cordierite or similar post compositions also eliminates the
possibility of current being conducted from one level of shelves to
another, should element contact occur on a lower shelf.
|Strength at normal temperature(Mpa)||>50|
|High temperature bending strength(Mpa/1400℃)||>55|
|Cold crushing strength(Mpa)||>90|
|Refractoriness under load (℃)||>1750(T2)2Kg/cm2|
|Maximum service temperature (℃)||1450|
|MAIN SIZE OF SILICON CARBIDE KILN SHELF|
|Thickness can be 10-30mm|
1.) Side wall Electrolyzer cell chemical-industrial reaction pot.
2.) Used as Kiln shed board, slide push board, sagger, Tuyere
3.) Used in blast furnace belly, Bosh and lower stack, cooling
wall, rubbish burning furnace and boiler.