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.
HEF Group offers innovative solutions for wear, friction and corrosion reduction through a diverse selection of surface treatments and hard coatings. We partner with industry’s largest and most demanding manufacturers to develop application-specific surface engineering processes & products that substantially enhance performance and long-term durability.
We understand that there is no such thing as a “standard” engine valve or piston-pin – and that each component or assembly has its own performance requirements. Performance is not only a function of the bulk properties of the component material, product design factors and operating conditions, but it is also strongly influenced by the surface properties and metallurgical characteristics of the material. A component’s surface properties can be engineered to meet the challenges of demanding operating conditions, either by:
HEF utilizes both the above surface modification options to deliver solutions that maximize the sought after performance characteristics of the mechanical components under consideration. By focusing our substantial global resources – people, technology & infrastructure – on specific applications, HEF creates optimized solutions with the greatest possible value.
Our primary jobbing service and product offerings in