Liquid nitriding is a subcritical surface enhancement process with one of the longest track records of success of any case hardening technology.
PVD coatings involve the deposition of thin (2-10 microns; 0.0001" – 0.0004") films on the surface of tools and components.
|CLIN Process Steps||Scope||Description|
|Degreasing/Rinsing||Remove oils, and other particulates from the surfaces of the parts|
|Preheating||Maintain a stable temperature in the nitrocarburizing melt|
|Oxidizing*||Corrosion protection, black appearance||The porous zone of the iron nitride layer is oxidized to form stable iron oxides (Fe3O4).|
|Cooling/Cleaning||Remove salt from the surface of the parts|
|Mechanical finishing*||Smooth surface, low roughness (no lower than before treatment), friction properties||HEF expertise:
|Impregnation||Improve corrosion resistance, bright appearance||HEF impregnation using:
Corolac (dry appearance)
Corofluide (oily appearance)
The LN process is carried out in equipment manufactured by HEF and customized to the nature of the applications under consideration – the size and shape of components to be nitrided; the throughput rate required; process steps required to achieve the desired nitriding specifications; and environmental considerations. A schematic view of a typical ARCOR® process line is shown below:
These CLIN process lines can be fully/partially enclosed or have an open configuration as shown below: