Bell furnace for heat treatment in a protective atmosphere
The gas-tight bell furnace is used primarily for heat treatment of charges in a defined protective atmosphere (argon, nitrogen, forming gas, etc.), which protects the surface of the charge from unwanted changes. The furnace is designed as a bell furnace with a bottom loading with a protective atmosphere supply inside the retort. This solution allows for the insertion and manipulation of a large and heavy charge at floor level. The furnace is equipped with forced air circulation, which allows for faster heating of the charge and better distribution of the temperature field.
The two PP CHTZ 950 furnaces supplied by us are used for tempering steel parts under a protective atmosphere (in this case, the customer uses nitrogen). The furnace is also equipped with circulation and forced circulation of the internal atmosphere. Cooling of the charge is indirect, when a fan blows air into the space outside the retort and there is a ventilation chimney in the upper part of the furnace. The inlet and outlet of the cooling air are equipped with an automatically controlled damper. The device is located on the floor and we allow the charge to be inserted at floor level.
PP CHTZ 950 furnaces are manufactured to reproducibly meet the requirements of the AMS 2750 standard for the aerospace industry.