ALD MonoTherm® – Vacuum Chamber Furnace for Ultimate Quality

With more than 40 years of experience in the manufacturing of vacuum heat treatment equipment, ALD has developed the single chamber vacuum furnace family, the ALD MonoTherm®-line. This furnace type is based on continuous improvements to the equipment and process technology and yields highly reproducible results with excellent efficiency.

Flexibility Pays Off

The ALD vacuum 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 and
  • sintering.

Due to the modular design principle, incorporating different chamber sizes in cubic and cylindrical shape, every type can be adjusted to individual needs. ALD’s vacuum chamber furnaces are widely used by commercial heat treaters to provide vacuum processes. The increased flexibility in design allows an adaptation to production facilities as well as universities and research departments. With such wide appeal and versatility, the ALD MonoTherm® can be found in the aviation and aerospace industries, automotive segment, tooling manufacturers and even producers of magnets. The ALD MonoTherm® furnace is truly unique.

Vacuum Heat Treatment

In vacuum heat treatment, the exclusion of oxygen prevents oxidation of harmful components, which occur in other types of traditional atmosphere furnaces. This method of vacuum processing is especially useful for the treatment of high- and medium-alloyed steels, as well as for brazing and sintering. The heating can be convective or in vacuum. For quenching, inert gases are being used. With additional devices, the furnace can be modified for other processes, such as vacuum carburizing.

AT a Glance


The concept of the ALD vacuum chamber furnace MonoTherm® offers all options to create a heat treatment plant, adjusted to the requirements of the operator. The advantages are:

  • Highest product quality,
  • Reduced production cost,
  • Increased efficiency,
  • Improved productivity,
  • All in all with very low environmental impact.

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ALD Monotherm

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