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Main use
Pit furnaces have been in use for a long time with industry and commercial heat treaters. Modern designs equipped with state of the art process control are used for numerous applications, in particular for large size parts and very long process times.
Heat Treatment applications at temperature up to 1100 °C:
- Hardening.
- Carburizing.
- Carbonitriding.
- Nitriding.
- Bright annealing.
- Oxidation or Blueing by VAPOCAD® process.
All these treatments are carried out under controlled atmosphere.
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Pit furnaces ELTERMA S.A. Seco/Warwick Group Poland are used in the following heat treatment and heat-chemical treatment:
- Gas carburizing
- Carbonitriding
- Normalizing
- Hardening
- Tempering
- Annealing.
The range of their application is very wide; they can be used for heat treatment of small components in the high volume production as: gear wheels, cogs, sleeves, shafts, rings, bolts, pipes, casting moulds. They are also used in heat treatment of heavy loads (individual production), as subassemblies for example. the components of the undercarriages, rolled rolls.
Available design versions of pit furnaces manufactured by ELTERMA S.A.:
- Pit retort furnaces (to work with the controlled atmosphere) and non-retort furnaces (to work with the natural air atmosphere)
- Pit retort furnaces with the closed bottom retort (for load treatment which weight is up to 3.000 kg) and with fixed hearth (for load treatment within the range of 3.000-15.000 kg)
- Alternative variants of the heating systems – electrical and gas ones.
Every time, the elements of the technological line are established in accordance with the Client’s requires and conditions of the technological process.
For more information please contact: B.Tustanowska@elterma.com.pl
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We can offer electric pit retort furnaces, PCF and PNF type, to work with controlled atmospheres and pit furnaces, PAF type, to work with natural air atmosphere.
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Electrically heated Pit Furnace for heat treating gun tubes for M1A1 Tanks.
Performance tests to verify heating rates and uniformity were performed at Wellman's factory prior shipment
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