 |
|
Made from graphite fibers with characteristic length, and a carbon
binder,
SIGRATHERM
is a shape-retentive insulation material, in the form of plain boards,
or cylinders.
Characteristics and Benefits
|
 |
Low thermal conductivity
This property allows high-temperature
plants to be designed
and built with small wall
thicknesses. Furthermore, graphite
foil-faced felts ensure
heat reflection to the furnace
interior and the foil acts as a
convection barrier.
|
|
Low heat capacity
The low mass of the heat
insulating layer - as a result
of its low density - allows
rapid heating and cooling
of the furnace.
|
|
High thermal stability
SIGRATHERM
rigid felts are stable in oxidizing atmospheres up to 400 °C,
in vacuum up to 2500 °C and under inert atmospheres up to 3000
°C.
|
|
Shape retentivity
The felt does not undergo
compression under normal
operating conditions. The
bulk density thus remains
unchanged throughout the
entire insulating layer. The
insulating properties are
constant and no voids,
channels or hot spots occur.
|
|
Low adsorption of gases or vapours
Because of their small specific
surface area, rigid graphite
felts scarcely adsorb any
moisture. This makes brief
pumping times in vacuum
furnaces possible.
|
|
Erosion resistance
Thanks to the carbon binder,
the rigid felt fibres are so
securely anchored, that they
do not tear off even at high
gas velocities. Felts with a
carbon coating, carbon paper
covering or graphite foil
facing perform even better.
|
Please click here to contact us about SIGRATHERM:
E-Mail:  hta@sglcarbon.com
 back
|
Home
Company
Products / Businesses
Graphite Electrodes
Cathodes
Graphite Specialties
Electronic Applications
Industrial Applications
Applications
Electrical Carbons
Corrosive Media
Fuel Cell Components
Trade Shows
Rigid Graphite Felt
© 2000-2007 SGL Carbon AG