Oferta Polmo Gniezno

Termochemical treatment

Termochemical treatment

Heat treatment plant is equipped with a all-purpose electric chamber furnaces with controlled atmosphere enables the application of modern technologies of heat and thermo-chemical treatment of charge within the range of temperatures 750-950°C.

Computer control and registration of process parameters ensure the highest quality and repeatability of the process.

In the Heat Treatment Department are carried out the following processes:

  1. In furnaces with protective atmosphere of nitrogen:
    • Gas carburizing at temperature from 850-950°C
    • Gas carbonitriding at temperature from 780-900°C
    • Heating before hardening at temperature from 780-950°C
    • Annealing at temperature from 650-850°C

    Maximum charge size: wide 600mm, height 400mm, length 900mm.

    Hardening processes take place in the oil.

  2. Hardening under hydraulic press in oil.
  3. Hardening outside the furnace in water.
  4. Induction hardening: max. dia 150mm, length 600mm.
  5. Low temperature, medium and high tempering.
  6. Washing the washer chamber.
  7. Straightening long pieces after the heat treatment process.

The advantage of the heat treatment process in our plant is to achieve equal hardness of parts with minimal deformation and no scaling on the parts which greatly facilitates their further processing.