Application
The electrical resistance chamber furnaces in an oxidizing environment are for universal purpose. They may be used for hardening, tempering, annealing, normalization, and other processes requiring heating up to 1260 ° C.
Construction
The furnace casing is welded type and is made of sheet and shaped steel sheets.
The furnace door opens automatically in “up – down” direction through a motor-reducer.
The thermal insulation is made of modern light-weight refractory bricks, plates and mats.
Electrical heaters are made from heating wire, characterized by high mechanical strength in hot state and arranged appropriately in the working space of the furnace.
Control of the temperature is carried out by a microprocessor programmable PID – temperature regulator, sensing the signal directly from a standard thermocouple.
Electrical switchboards are designed for power and control of the furnace with operating voltage according to the design and the control of the thermal processes. The electrical switchboards provide appropriate control and protection of the circuits and automation, providing the required security.
The electrical resistance furnaces and respectively the switchboards for powering and management work with three-phase mains voltage (380 V) – to power the load chain and 250 V for control circuits (command and protective circuits related to the safety).
Available furnaces of this type are made in accordance with the technical assignment of the client and in accordance with the requirements of the technology for heat treatment of the products.
