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Centorr Sells New Advanced Ceramics Furnaces

Centorr Vacuum Industries (CVI) announced it has received orders for multiple ceramics process sintering furnaces from various customers.

The designs include sizes from 60, 250, and 350 l respectively for sintering oxides and non-oxide ceramics for a variety of processes. These new furnaces build on the success of CVI’s experience in tungsten carbide hardmetals with modifications made specifically for higher-temperature SiC, Si3N4, Al2O3, and B4C processing. Centorr’s design includes robust graphite tube and block elements designed for use to 2450 °C, with single or multiple zones of control for excellent temperature uniformity. The insulation package has been upgraded from graphite felt to a rigid graphite board for long-term service even in the presence of process off-gassing or binder contamination. CVI’s standard binder removal system (BRS) uses positive pressure flow through gas and includes a binder reservoir with integrated exhaust tower. For larger designs, 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. For complete binder destruction, the larger furnaces utilize a 1000 °C thermal incinerator for complete destruction of VOC’s and the virtual elimination of offending exhaust by-products. Furnace control is via programmable controllers or Centorr’s in-house custom designed HMI visualization interface. This event-based control offers extensive data acquisition functionality for supporting SPC and continuous improvement programs, and remote system operation. The new Sintervac ceramic furnaces are available in different sizes. CVI is a high temperature vacuum/controlled atmosphere furnace manufacturer with an installed base of over 6000 units worldwide. Their furnace offering ranges from large commercial and production units with hot zones over 3 m × 3 m, to smaller lab and R&D furnaces for use at temperatures over 3000 °C.


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