Pit – Type furnaces

These pit-type furnaces with or without air circulation are particularly useful for a professional heat treatment demanding optimum temperature uniformity.
Production processes such as tempering, solution annealing, artificial ageing, and soft annealing canbe realized with these pit-type furnaces.

Models PPJ1

  • Max. operating temperature 450ºC
  • Furnace chamber lined with steel or alloy sheet 1.4301 (304)
  • Air circulation fans in the furnace lid, high circulation rate
  • Freely radiating heating elements placed on supporting tubes
  • Manual, pneumatic or hydraulic lid lifting door
  • Optimum temperature uniformity in the useful chamber
  • Low energy consumption due to multi-layer insulation
  • over temperature safety

Models PPJ2

  • Max. operating temperature 600ºC
  • Furnace chamber lined with steel or alloy sheet 1.4301 (304)
  • Air circulation fans in the furnace lid, high circulation rate
  • Freely radiating heating elements placed on supporting tubes
  • Manual, pneumatic or hydraulic lid lifting door
  • Optimum temperature uniformity in the useful chamber
  • Low energy consumption due to multi-layer insulation
  • over temperature safety

Models PPJ3 with integral Protective Gas Retort

  • Max. operating temperature 1150ºC
  • Furnace chamber with light weight insulation bricks and heating elements embedded in grooves for protection
  • Heating elements on all wall surfaces
  • Possibility for manual or automatic gas supply systems
  • Manual, pneumatic or hydraulic lid lifting door
  • Upon request Gas tight alloy retort with protective gas inlet and outlet made of heat-resistant alloy 1.4841 (314)
  • Gas tight retort furnaces particularly suitable for annealing processes requiring a constant defined atmosphere in the furnace chamber
  • Water-cooled door seal with ‚O‘-ring gasket
  • Manual or automatic gas supply panel for: Carburizing, Nitro carburizing, Nitriding
  • Process and charge documentation via Controltherm software or PLC-based control system