HEF Group is the worldwide leader in the domain of nictrocarburizing in ionic liquid environment. For more than 50 years, it operates thermochemical CLIN treatments (Controlled Liquid Ionic Nitrocarburizing) mainly on ferrous alloys (steel, cast iron, stainless steel,…). These salt bath treatments improve the hardness gradient and the compression constraint gradient to increase the wear resistance and the fatigue of the material.
The CLIN treatments can be accompanied with a passivation step offering an excellent resistance to corrosion. Certain parts can then last for more than 700 hours in saline mist thanks to such a treatments.
HEF Group disposes of various thermal projection technologies used to coat a large range if materials.
The arc or flame projection permits the improvement for wear or corrosion resistance, to make conductive or insulating thermic/electric, and to improve the friction of all types of inorganic materials expect copper.
The plasma projection is destined to inorganic materials at the exception of copper to confer them numerous properties:
Subsidiary of HEF Group since 2011, the company LIFCO industry elaborates mutli-material or composite powders, in particular used for the thermal and electrostatic projection surface coating thanks to the projection technology in fluidized bed.