These universal chamber furnaces with radiation heating have been specifically designed to withstand heavy-duty use in the heat treatment shop. They are particularly useful for processes such as tool making or for hardening jobs, e.g. annealing, hardening and forging. With help of various accessories, these furnaces can be customized to your application requirements.

Standard Model N 31/H - N 61/H

• Compact economical design
• Three-sides heating: from both side walls and floor
• High-quality, free-radiating heating elements mounted on support tubes for longest service life
• Floor heating protected by heat conducting SiC tiles
• Parallel guided downward swinging door (user protected from heat radiation)
• Stainless steel upper door jamb protects furnace structure when furnace is opened hot
• Exhaust port in rear
• Optimum temperature uniformity (according to DIN 17052-1) up to ΔT 20 K
• Low energy consumption due to multi-layer insulation
• Gas spring dampers provide for easy door opening and closing

Standard Model N 81 - N 1491 (in Addition to Standard Models N 31 - N 61)

• Upward-swinging manual door with counterweight and gas damper
• Free radiating heating elements mounted on support tubes

Additional Equipment for N 31/H - N 1491

• SiC plates to protect the wall heating elements (N 81 and larger)
• Electro-hydraulic lift-door (N 81 and larger)
• Protective gas ports in combination with silicone sealing of the chamber
• Annealing boxes for powder nitriding, annealing and hardening under protective gas
• Loading devices and charging aids, charging plates
• All accessories for heat treatment processes see Heat Treatment II catalog
• Cooling fan and automatic control of exhaust vents (N 81 and larger.)
• Heating elements also in door and rear wall for optimized temperature uniformity according to DIN 17052-1 up to ΔT 10 K (N 81 and larger, reduced useful chamber depth)