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November 2001 - Nashua, NH -- Centorr/Vacuum Industries announced it has developed a
variation of its standard Sintervac® line of batch furnaces designed specifically for
SiC processing. This new furnace builds on the success of C/VI's experience in non-oxide
ceramics and Tungsten Carbide hardmetals with modifications made specifically for SiC Diesel
Particulate filter processing.
Centorr's design includes robust Graphite Tube and Block elements designed for use to 2800°C,
with multiple zones of control for excellent temperature uniformity. The new "Graph-Tek"
insulation package has been upgraded from common felt to our proprietary rigid board/CFC
lining for long-term service even in the presence of process off-gassing or binder
contamination. C/VI's Binder Removal System uses positive pressure flowthrough gas and includes
a binder reservoir with integrated burnoff tower. The new dual flowthrough Sweepgas®
system provides inert gas to both the chamber and retort ensures proper "sweeping"
away of binders using preheated inert gas and minimum condensation of binder residue on the
cold chamber walls. An optional design utilizes 1000°C heat for complete destruction of
VOC's and the virtual elimination of offending exhaust byproducts. This proven system allows
one furnace to accomplish two individual processes (binder removal + sintering), saving floor
space, money, and maintenance costs for two separate pieces of capital equipment. Furnace
control is via PLC/Programmable Controller or Centorr's in-house custom designed HMI
visualization interface using award-winning Intellution® software. This event-based control
offers extensive data acquisition functionality for supporting SPC and continuous improvement programs,
and remote system operation.
The new Sintervac SiC is available in sizes from 2,3, 4.5, 9,16, and 25 cubic foot volumes.
Centorr's Cold-wall Graphite Pusher furnaces are designed for use in inert gas flowthrough
or vacuum operation for temperatures up to 2500°C. They heat up and cool down in
under 3 hours and provide unmatched temperature uniformity in a small cross-section.
Centorr/Vacuum Industries is a high temperature vacuum / controlled atmosphere furnace manufacturer
with an installed base of over 5000 units worldwide. Their furnace offering ranges from
large commercial and production units with hot zones over 3m x 3m, to smaller Lab and
Research & Development furnaces for use at temperatures over 3000°C. They are located
in Nashua, NH with a fully staffed Aftermarket Field Service group, and Applied Technology Center
offering R&D support and toll production service. For more information please contact
Scott K. Robinson at 603-595-7233 x 263.
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