VIM Furnaces by Therelek

Therelek’s Vacuum Induction Melting furnace (VIM) is used in secondary refining or metallurgy, to refine alloys in a fluid state and adjust chemical composition and temperature. This increases the required quality demands of the material. Therelek’s vacuum induction melting furnaces are generally used in secondary refining of many complex alloys in aerospace engineering.


The material gets homogeneous and clean after refining and removal of dissolved and bonded impurities. The vacuum levels are set to be in the range of 10-1 to 10-4 mbar during the refining phase. Our furnaces come with a vacuum/controlled atmosphere and precise control for melting.

The melting process is comparatively easier in VIM, attributing the independent control of time, pressure, temperature and transport through melt stirring. In the process of vacuum induction melting, we have the flexibility to control the alloy composition by sampling & addition of required alloys.

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Features & Specifications

Title Description
Furnace Type Cold Wall (front loading, top loading)
Melt Zone Cylindrical
Temperature Range 800°C to 2200°C (furnace)
Standard Applications Vacuum Induction Melting
Vacuum 5 x 10-6
Vacuum System Rough Vacuum by Rotary-Roots combination | High Vacuum by Diffusion pump / Turbo Molecular pump
Heating Elements Induction Coil
Instrumentation & Automation Induction Coil Controller, Pyrometer, PLC, SCADA, HMI



More about Vacuum Induction Melting Furnace VIM


  • Used in aircraft engine components for casting
  • Used in making superalloys
  • High purity metals and alloys are refined
  • Re-melting of electrodes
  • Investment casting
  • Strip casting


  • Small batch sizes
  • A quick change in the program of steels and alloys
  • Easy operation
  • Reduction in Oxidation losses
  • Compositional tolerance achieved
  • Precise Temperature control
  • Low environmental pollution

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