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The convection type INH inert gas oven or kiln can be used for many applications, which need heating in an oxygen-free atmosphere.
In addition to protective gas or inert gas such as nitrogen (N2) and argon (Ar), these can also be operated under air.
This oven can been used e.g. for firing LCD glasses, inert metal treatment, surface hardening, drying,
annealing, baking and so forth of various materials and parts.
Heating of the gas is performed in an external heater. The heated gas is then flowed through the chamber in a laminar gas stream.
The gas enters the main chamber through a perforated wall. The size of the holes can be adjusted in order to achieve a very good
temperature uniformity inside the furnace chamber. The gas leaves the main chamber by another perforated wall at the opposite side and is
circulated back to the heater. Some fresh gas is always added to the main gas stream and same amount of gas leaves the oven by the exhaust gas duct.
The main chamber consists of stainless steel and allows the installation of several shelf levels. Max. temperature is 600°C.
The oxygen level can be reduced to less than 20ppm.
For furnace control we use in Europe mainly program controller from the company of Stange,
which enables beside temperature control also gas flow control via MFCs (mass flow controller) and allows integration of gas sensors,
e.g. for oxygen measurement.
As an option, data coupling with a PC can be offered, which allows long term data storage as well as statistical process control SPC,
recipe management and process visualization.
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