There are various ways of protecting delicate workpieces from damage.
The workpiece holder areas that come into contact with parts can be partially coated with HALAR (Teflon) or RILSAN (Polyamide). On rounds HALAR can be applied with a thickness of 0.25 to 0.6 mm. The Teflon protective layer is very durable and offers excellent protection against corrosion. It has a „rubber-type“ surface and very good chemical resistance. HALAR is temperature-resistant up to 130°C (wet) or 150°C (dry).
The cheaper RILSAN coating can be applied on rounds with a thickness of 0.1 to 0.4 mm and has a relatively hard surface. The disadvantages of the RILSAN coating - compared with HALAR - are poorer chemical resistance and lower temperature resistance (80°C in continuous use, higher if used for a short time).
A crucial quality feature for both types of coating is the pre-treatment. If the parts are not sand blasted before being coated, superficial damage can cause the coating to detach. With RILSAN, this can cause large areas of the coating to flake. For this reason, we place great emphasis on pre-treatment and sand blast all parts before coating them.
Both plastic coatings are wearing parts. They wear over time and must be reapplied in regular intervals.
Special temperature and media-resistant Teflon clips enable selective coating of the areas of the workpiece holder that come into contact with the components. Teflon clips are predominantly used for heavy and/or sharp-edged components, where plastic coatings would wear too quickly. Alternatively, Teflon mouldings can also be used.
