Vacuum-Chamber Furnace for ultimate quality

The vacuum furnace ALD MonoTherm® has reproducible heat treatment capabilities with high efficiency and can be flexibly adapted to customer’s specific requirements.


The ALD vacuum single-chamber furnace type MonoTherm® has broad capabilities and can be used in a wide variety of heat treatment processes like:

  • Annealing
  • Hardening
  • Tempering
  • Brazing in fine respectively high vacuum
  • Case hardening
  • Sintering

Technology at a glance

Due to the modular design principle, different chamber sizes in cubic and cylindrical shape are available and every type can be adjusted to individual needs.

Flexibility which pays off

ALD’s vacuum chamber furnaces are widely used by commercial heat treaters and hardening shops to provide vacuum processes. The increased flexibility in design allows an adaptation to parts and processes required in production facilities as well as universities and research departments. With such wide versatility, the ALD MonoTherm® can be found in the aviation and aerospace industries,  at automotive suppliers, tooling manufacturers and even producers of magnets. The ALD MonoTherm® furnace is truly unique.

Advantages at a glance


  • Quality documentation for each load
  • High reproducibility of part quality
  • Minimal parts distortion
  • Optimum parts surfaces
  • Less to none subsequent machining

Commercial efficiency

  • Less hard machining due to minimal part distortion
  • Time savings through short treatment times
  • Low consumption costs
  • High energy efficiency
  • High reliability


  • No CO2 emission
  • High energy efficiency due to low thermal losses
  • Low noise emission
  • Dry quenching without disposal of waste washing water
  • Clean working environment without oil, vapors or flames