Vacuum Heat Treatment Furnace Manufacturers

Vacuum heat treatment or thermal processing of components at low pressure or vacuum has been the choice of niche and high technology industries like aerospace, space research and special processes earlier, but now is well established even in regular process and engineering industries for various heat treatment applications like hardening, tempering, annealing, brazing, sintering, hot pressing and stress relieving.


Vacuum furnaces are preferred over conventional methods of heat treatment due to the advantages it brings – such as prevention of surface oxidation, decarburization and low distortions on workpieces thus resulting in cleaner surfaces, less rework and less post-heat treatment cleaning or corrective operations. Vacuum furnaces are designed to suit to job configuration. i.e., top-loading, bottom loading, horizontal front loading.

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Features & Specifications

Title Description
Furnace Type Cold Wall (top-loading or bottom loading or front loading)
Hot Zone Cylindrical/Cubical
Temperature Range 800°C to 2200°C (furnace)
Vacuum to 10-6
Vacuum System Rotary-Roots combination/Diffusion pump/Turbo Molecular pump
Heating Elements Molybdenum/Tungsten/Graphite
Gas Quench Up to 5 bar, optionally 10 bar
Instrumentation options Thyristor, Programmable Temperature Controller, Temperature Recorder, PLC, SCADA, HMI

Types of Vacuum Heat Treatment Furnace

Bottom Loading/Vertical Vacuum Furnace

Hearth support for job weight from 25 kg to 1000 kg. Rotary – Roots pump combination / Diffusion pump / Turbo Molecular pump based vacuum system.

Vertical Vacuum Furnace

Front Loading/Horizontal Vacuum Furnace

Our Horizontal Vacuum Furnace has cold wall construction with metallic/graphite hot zone. The door swivels sideward and the material is loaded from the front.

Horizontal Vacuum Furnace



More about Vacuum Furnace


  • Annealing
  • Isothermal Annealing
  • Stress Relieving
  • Hardening
  • Tempering
  • Sintering
  • Brazing
  • Normalizing
  • Case Hardening
  • Laboratory Applications
  • Pre-Sintering