Vertical high temperature vacuum pit type furnace type C / type CE

Vertical vacuum pit furnace with round hot zone for high temperature processes like hardening, brazing, sintering, etc.

  • type C: model with hot zone insulation made of graphite
  • type CE: model with hot zone insulation made of molybdenum + stainless steel

The vertical vacuum pit furnace is often used for long narrow parts like large centerline components.

Loading of the furnace from the top.

  • 500 x 1500 mm - 1200 x 1800 mm (D x H)
    Chargenmaße (load dimensions) Chargengewicht (weight)
    (DxH) (mm) kg (brutto) (gross)
    500 x 1500 600
    600 x 2500 1000
    800 x 2000 1000
    1000 x 1200 1200
    1200 x 1200 1500
    1200 x 1800 1600
  • 500 - 2000 kg (gross)
  • round hot zone
  • graphite or molybdenum
  • 10-2 mbar-range, 10-5 mbar-range, 10-6 mbar-range
  • max. 1350°C, 1500°C, 1600°C
  • 0,9, <1,5, 6, 10, 13 bar and higher (abs.)
  • processgas (nitrogen, argon, helium, etc.)
  • SCHMETZ Thermprocess Management System "TMS"
  • Hardening (vacuumhardening with overpressure gas quench)
  • Tempering (in vacuum- or gasatmosphere)
  • Annealing (stress-relieving and soft annealing)
  • Soldering (in Fine- or Highvacuum- atmosphere)
  • Sintering (e.g. magnets, filter)



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Products of this series

Detailed Description

The vacuum pit type furnace is designed on the ""cold-wall principle"". The cylindrical outer casing is a vertical construction, double-walled and water-cooled. Thermal strain is hereby excluded as no measurable temperature will be transferred to the outside wall.

Inside the casing the following components are located: hot zone, heat exchanger, high capacity radial fan with electric motor and the gas ducts. Outside the casing the vacuum pump station, the transformers and the switchboard are installed. This compact design guarantees an extremely low need of space. The layout will be adapted widely with the local facilities. The maintenance friendly design is leading to an easy access to all elements and components of the furnace.

Loading and unloading of the furnace is done from the topt. The swivelling furnace door will be secured with the furnace casing hydraulically / electrically against overpressure after loading. The required time-/temperature cycle is running fully automatically afterwards.

SCHMETZ vertical vacuum pit type furnace are operated in inhouse or commercial hardening shops and also for high temperature brazing applications as example.

According to application the furnace is equipped with appropriate vacuum systems as well as isolation made of graphite or molybdenum + stainless steel. An optional convection system optimise heating up speed and uniformity. Appropriate cooling gas pressure stages from 0,9 up to 13 bar (abs.) and higher realise intensive quenching speeds according to individual requirements of component, material quality and load. Different cooling systems ensure most distortion low heat treatment results.

The wide range of standard sizes offers the suitale furnace for the particular component and requested capacity.


SCHMETZ Konvektionssystem *FUTUR*


SCHMETZ System "1R"



Process control


Additional options

  • diffusion pump, turbomolecular pump, cryo pump
  • increased heating power
  • multi-zone heating
  • buffer tank
  • loading car
  • loading support devices (grids)

Further options on request.