Processes, Features and Benefits

The Process

The process is used for stripping austenitic stainless steel. It removes nitride layers evenly and leaves a satin-matt finish, with minimal etching of the base material. The electrolyte used is supplied ready for use. The process takes place at 20–40 °C, 3–7 A/dm² and just 2–5 V. It is characterised by its short treatment time of just 3–30 minutes, depending on the coating thickness and type. For operation, an acid-resistant plastic tank with extraction, a rectifier, bath circulation and filtration, as well as subsequent ultrasonic cleaning, is recommended.

Application

This process is particularly suitable for the regular maintenance and reconditioning of PVD holders, racks and screens made of stainless steel. It is possible to treat a multilayer system consisting of compatible coating types. It is particularly well suited to replacing the time-consuming and costly process of sandblasting.

Advantages

- Rapid and uniform removal of PVD nitride coatings
- Shorter processing times compared with mechanical blasting methods
- Gentle treatment of complex component geometries
- High process reliability and reproducible results
- A satin-matt finish after treatment - Reduced labour requirements and lower operating costs