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Controlled Liquid Ionic Nitriding Equipment

Basic Process Steps for Liquid Nitriding:

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  
Nitrocarburizing Surface structure  
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 has know-how in:
  • Blast finishing
  • Mass finishing
  • Centerless polishing
Impregnation*
  • Improve corrosion resistance
  • Bright appearance
HEF impregnation using:
  • Corolac (dry appearance)
  • Corofluide (oily appearance)
    *optional

The CLIN process is carried out in specially designed equipment customized to the nature of the applications under consideration — the size and shape to 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:

A schematic view of a typical ARCOR process line

These CLIN process lines can be fully/partially enclosed or have an open configuration as shown below:

The CLIN process line