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Material testing

Nitriding of large gearbox components

It’s the top of heat treatment: Nitriding of large gearbox components, which are for example used for wind power generation. Especially wear resistance, combined with the request that only certain areas may be nitrided, are the major challenges.

Although gas nitriding is also used for special applications, PLASNIT® plasma nitriding is the preferred process because of main advantages:

  • Mechanical covering is possible and thus eliminates time-consuming masking with pastes, which contaminates the furnace
  • No ammonia is used, which makes it most environmentally-friendly
  • The omission of ammonia also means that there are no open flames inside manufacturing sites, there are no poisonous gases in use, and no costly safety measures have to be taken


With component diameters of up to 3 m, also size of the treated parts is a big issue for manufacturers as well as commercial heat treaters. Nevertheless, also here RUBIG offers taylor-made furnaces, which are able to treat very large components.


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If you have questions, please contact Thomas Bauer!

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