Retort Type Furnaces

By using liquid nitrogen, the charge can be deep-frozen (down to approx. -100°C) directly after tempering.

• No separate cooling chamber required
• No recharging necessary
• Integration of the tempering and freezing steps into one process
• Joint documentation

The furnace atmosphere is cooled down as quickly as possible via an additional, separate heat exchanger.

• up to 30% shorter cooling times
• Shorter process time
• Higher productivity of the plant

By installing recuperative burners, a 20% reduction in heating gas consumption is achieved.

• Increase the efficiency of heating
• Better utilization of exhaust gas heat
• Reduction of CO2 emissions
• Cost savings due to lower gas consumption for system heating

• Nitriding index control with hydrogen analysis
• Process reproducibility & permanent process control
• According to AMS 2757, AMS 2759, CQI9

An additional heat exchanger allows the RH furnace to be operated without external cooling water.

• No external cooling water supply
• Cost saving for smaller heat treatment plants
• Heat exchanger can also be placed outside the building
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Where space is limited, the furnace door can be designed as a lift gate. This also allows for extreme installation situations.

Combination of RH furnaces and ancillary equipment, e.g. washing machines for pre-cleaning, intermediate storage stations to form complete, fully automatic nitrocarburizing lines.