Cyclone Gas-Fired Retort Pit Nitriding Furnace

Cyclone Gas-Fired Retort Pit Nitriding Furnace


Product Details

Gas-fired pit furnaces with built-in retort available in single or two-stage nitriding systems. Cyclone gas-fired pit furnaces are capable of temperatures up to 1400°F. The top loading furnaces have a separate heating/fan chamber that provides heat to the work chamber. The workload is heated by a unique re-circulating convection heating system that forces pressurized air through the work chamber at a high velocity. A “suspended” fan shroud mates with either the basket or baffle to provide a closed path of circulation when the cover is closed. Atmosphere leaves the fan and travels downward through annular clearance between the retort and basket or shroud to below the load support, then upward through the work before again entering the fan inlet.

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  • Fast, efficient cooling
  • Fan motor is easily accessible
  • Temperature Range: up to 1400°F
  • Proven components that deliver a long service life
  • Maintenance friendly design


  • Designed for nitriding
  • Gas fired burner
  • High velocity heat chamber recirculating fan
  • Lid-mounted recirculating fan
  • Lightweight ceramic fiber insulation
  • Work chamber isolated from heated chamber


  • Ammonia dissociators
  • Removable retort for accelerated cooling
  • Two-stage nitriding
  • Various control and recorder options