Industrial Nitriding Furnace

Nitriding Process

Nitriding is a surface-hardening process that diffuses nitrogen onto the surface of a metal (normally steel, aluminum, or titanium). Nitriding creates a hard case on treated metal and is performed at temperatures lower than the transformation temperature of alloy steels, so the process causes little or no distortion to the treated piece. Quenching, a rapid cooling process, is not necessary with nitriding.

The nitriding process is performed in a heat treat furnace that uses dissociated ammonia, which is an atmosphere of hydrogen and nitrogen. Nitriding furnaces expose parts to active nitrogen at carefully controlled temperatures. Nitriding creates a high strength product that is resistant to wear and improves fatigue strength.

HOMO® Nitriding Pit Furnace

HOMO® Nitriding Pit Furnace

These electric-powered pit furnaces are available in single or two stage nitridng systems and are designed for applications that require high resistance to fatigue, impact and continuous metal-to-metal friction.  

Key Specifications

  • Chamber Size: 1.43 to 99.5 cubic feet
  • Lower finishing costs-minimizes warpage, distortion, galling, and seizing
  • Improved corrosion resistance-especially if parts are not subjected to a final finishing operation after nitriding

Cyclone Gas-Fired Retort Pit Nitriding Furnace

Cyclone Gas-Fired Retort Pit Nitriding Furnace

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 1250°F (1400°F optional). The furnaces have a separate heating/fan chamber that provides heat to the work chamber. 

Key Specifications

  • Chamber Size: 4.8 to 118.6 cubic feet
  • Temperature Range: up to 1250°F
  • Inert or Combustible Atmosphere Capable
  • Optional afterburner

Lindberg Cyclone Electric Retort Pit Nitriding Furnace

Lindberg Cyclone Electric Retort Pit Nitriding Furnace

The cyclone pit furnace has been used for tempering, normalizing, solution treatment of aluminum and annealing for many decades. 

Key Specifications

  • Temperature Range: up to 1250°F
  • Uniformity: ± 10°F
  • Inert or Combustible Atmosphere Capable
  • High velocity recirculating fan