Two-chamber resistance furnace with controlled atmosphere SNZE-2.4.2/15-2

Two-chamber resistance furnaces with controlled atmosphere SNZE-2.4.2/15-2 are used in various high-heat treatment (training, annealing, ageing, tempering, etc.) at temperatures up to 1500 °С and small gas emissions where there is no interaction between the residual gases and components of the electric furnace in the atmosphere of moist formirgaz (mixture of nitrogen and hydrogen).

Resistance furnaces SNZE-2.4.2/15-2 are designed to be used in the premises meeting the requirements of the “Interindustry labor safety rules for heat treatment of metals” POT PM RM-005-97.

The furnace is a two-chamber resistance furnace and consists of the following main components:
- gas moistening section;
- TTES3 transformer;
- control panel;
- section of vacuum pumping of the furnace chambers;
- heating chambers of the furnace.

Each heating chamber of the furnace is a horizontal cylindrical case closed from both sides by covers fixed on the case by hinges and tumbler clamps.

Case and covers of the resistance furnace SNZE-2.4.2/16-2 have cooling jackets. On the top part of the case of the electric furnace there are four lugs for installation of water-cooling copper current distributors. On the side of the case there are 6 inputs for installation of regulating and (if necessary) 4 temperature control sensors. In the top section of the two-chamber furnace there are built-in relief valves.

Inside the case there are thermal blocks consisting of lateral and two end shields made from molybdenum sheet 0.2 mm thick together with heating elements and their suspension brackets. Inside the thermal blocks there are molybdenum sheets acting as charge supports. Working area of the resistance furnace from the sides and from both end is surrounded by 2 flat zigzag heaters running in parallel.

Charge can be loaded into a two-chamber furnace and unloaded from it from both ends of the heating chambers.

Two-chamber resistance furnace with controlled atmosphere SNZE-2.4.2/15-2

Specifications of two-chamber resistance furnace SNZE-2.4.2/15-2

Installed capacity, kW
Rated capacity of the electric heaters of the furnace, kW
Maximum temperature in the working area, °С
Uniformity of maintenance of temperature in the working area of the furnace at maximum temperature, °С
Stability of the set temperature control by the automatic heating control system , %
Furnace working area dimensions, L x W x H, mm
(400 x 200 x 200) x 2
Charge weight, not more than, kg in each chamber
Ultimate positive pressure in the chamber of the heating furnace with hydrogen and (or) nitrogen supply, Pa (mm h)
392...588 (40...60)
Gas system of the furnace provides exit and measurement of nitrogen and hydrogen consumption, l / h
Up to 400
The gas system moistens working gases at the specified temperature and supplies them in the necessary ratio to the furnace
27...32 °С
Vacuum provided by the system vacuum in furnace chambers, not less than, Pa (mm h)  
Temperature of the external surfaces of the furnace, not more than, °С
Positive pressure for relief valves activation, kgs/sm2  
Rated voltage of the supply mains, V
Nominal current frequency, Hz
Number of phases of the furnace heater
Furnace cooling water consumption, m3/hour
Dimensions of the production section of the furnace, L x W x H, mm
2650 x 1500 x 1850
Dimensions of the control panel of the furnace, L x W x H, mm  
Dimensions of the transformer, L x W x H, mm  
Weight of the production section of the furnace, not more than, kg
Weight of the control panel of the furnace, not more than, kg  
Weight of the transformer, not more than, kg  
Rated service life with one-shift work, years

Water consumption for vacuum furnace cooling corresponds to the temperature difference at the input and output of the cooling circuits 20 °С.

Charge weight of the vacuum furnace depends on charge density. Charge weight is smaller for small density charges.

Our company LLC Prizma can design and manufacture industrial resistance furnaces to your specifications. Please let us know the furnace parameters you require: temperature, working atmosphere, working area dimensions, charge weight etc., and the furnace will be specially designed according to your requirements.