Lingenhöle Technologie
heat treatment: vacuum hardening

Vacuum hardening

With vacuum hardening, the components are treated in a thick-walled furnace at a negative pressure of about 10–3 bar and at temperatures of between 800 and 1,200°C. The components are then quenched using inert gas at high pressure (4–6 bar). An optimal relationship between durability and toughness can be achieved by single or multiple annealing.

Advantages of this heat treatment

  • Minimal distortion
  • No oxidation, smooth surfaces
  • Reproducible results
  • decarburization-free


  • cold and hot work steels
  • High-speed steels
  • Stainless steels
  • Powder metallurgy steels

Available plant sizes

Length 600 mm, diameter 900 mm, height 600 mm

Please contact us for further Information:
Email, T +43 5522 75451

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