Chamber Furnaces - Vacuum furnaces

High Temperature Chamber Furnaces HTK (Vacuum furnace)

The HTK range is available in three different versions and in up to six different sizes. The smallest designs with 8 litre and 25 litre capacity are usually employed by laboratories for research and development. The 80 litre – 600 litre capacity versions are predominantly used as plant for pilot manufacture and for production.

Graphite furnaces

These furnaces are employed under vacuum/high vacuum, protective gases such as nitrogen/argon, but also with reaction gases like hydrogen and carbon monoxide. Operation with air is not permitted. Applications include technical ceramics such as SIC, SIN, BC, ALN and combinations. In the field of composite materials the applications are employed for pyrolysis, sintering, siliconizing and graphiting.

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Metallic furnaces made of Molybdenum and Tungsten

The metallic furnaces have no fibre insulation, permitting the greatest possible purity of the process atmospheres or the best possible final vacuum. The complicated designs are employed for specimens requiring treatment in carbon-free atmospheres. It finds application in the lighting industry, metal powder injection moulding, tempering of saphirs, heat treatment of metals, sintering of pellets in the nuclear industry, manufacture of radar tubes, metallisation of ceramic components, high vacuum brazing etc..

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Ceramic fibre insulated furnaces

The third variant are chamber furnaces with ceramic fibre lining. These furnaces are employed for processes with defined oxygen percentages or 100% oxygen atmosphere. Processes involving nitrogen and argon are also possible, but a poor gas atmosphere quality must be accepted.
Processes for piezoceramic materials are possible and all oxide materials can be sintered. Other possibilities include the heat treatments of metals, crystal growing and the manufacture of ceramic powders.

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