Wat kan Dominial Ferritreren & Ferroteccen?

  • Onderdelen tot een afmeting van Ø 1650 * 2200 mm.
  • We kunnen met Ferritreren een hardheid van 1200 Vickers bereiken
  • Door deze behandeling word de wrijvingsweerstand aanzienlijk gereduceerd, zodat het koudlas-effect word voorkomen

The process

This process is preferentially performed at 570-580°C in a gas mixture of nitrogen and carbon emitting media. The main objective is wear protection in combination with high corrosion protection. The NHD is 0.1-0.35 mm. Partial treatment is possible. The treatment is performed to produce the desired compound layer; the precipitation layer is usually of secondary importance.

Suitable materials

All common steel, cast and sinter materials can be treated by nitriding. Non-alloy, low alloy and medium alloy materials are suitable; high alloy materials (> 13% Cr) are mostly unsuitable due to their surface passivity.

Tests and testing methods

Hardness is measured in accordance with EN ISO 6507 in HV (Vickers). Nitriding hardness depth (NHD) is measured in accordance with DIN 50190, Part 3. Traditional metallographic testing methods are used to assess the layers.

Benefits of this heat treatment

Low distortion
Little, if any, subsequent processing required
High resistance to wear with adhesion
Modification of layers to types of wear
Reduction in friction coefficients
Saving in lubricants
Formation of corrosion-resistant layers
Thermal stability of nitriding layer to 400°C
Partial nitriding possible

Customer information required for heat treatment

In addition to the material and the heat treatment prior to nitriding, the following information should be given as quality standards in the production drawing

Material- / Material designation
Surface hardness in HV (incl. test load)
Nitriding hardness layer (NHD) in mm
Thickness of the compound layer in µm (VS)
Thickness of the oxide layer in µm (OS)
Where appropriate, designation of areas that should not be nitrided