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.
The HEF Group, based in France, has been a global leader in the science of tribology (wear & friction) for more than 50 years. Established as a research and development company, HEF subsequently applied its knowledge and experience to develop surface engineering solutions for improving the performance of industrial and automotive components
Today, HEF is active in more than 20 countries throughout Europe, Asia, and the Americas, engaged in providing: