MelonitePVD CoatingsEngineered BushingsTribology Testing

PVD Coatings for Automotive & Precision Wear Components

In recent years there has been a concentrated drive to lower automotive carbon emissions and decrease fuel consumption. To achieve higher performance standards, engine design has continued to evolve. Innovations in valve train design; gasoline turbo-charging; engine downsizing; direct injection technology etc are placing increasing mechanical and thermal stresses on many engine components.

The importance of improving the durability/reliability and reducing friction between sliding and rotating surfaces of precision components used in industrial equipment such as pumps, valves, compressors, gear-boxes, etc. is also well recognized.

As shown below, several of the recent automotive engineering innovations can benefit significantly from specialized surface engineering technologies.

PVD Engine Technologies

Some of the powertrain components where wear-resistant thin film PVD coatings are gaining acceptance are illustrated below. Functional PVD coatings are also today being used on automotive fuel system components and differential gears.

PVD powertrain components

In order to meet the diverse operating conditions encountered by engineered components used for automotive and other generic industrial applications, HEF has developed a family of diamond-like-carbon DLC coatings. The details of these coatings can be seen in the Section DLC COATINGS”.

Using this portfolio of niche DLC and WC-C based coatings, HEF has developed a series of successes with components such as automotive tappets, piston pins, rocker arms, differential gears, fuel system components, etc.

HEF has also demonstrated the capability to handle large volumes of automotive parts using specially designed robotics; pre and post-coat surface finishing capability and a robust quality management system, including TS 16949. A combination of high throughput / high productivity PVD equipment & PVD processes; extensive use of robotics & automated product inspection; efficient product handling systems and optimized coating specifications has made it possible for HEF to position PVD coatings as a value-added surface engineering option to enhance the performance of automotive and precision-engineered industrial components.