Xylan
- It is common for polymer coatings to be heavily utilised on fasteners. However, during the assembly of the fasteners, the fluoropolymer coating can become damaged. With this damage, bare metal is exposed and corrosion quickly begins, causing the coating to fail. Contrary to this, when sherardized steel becomes exposed, the Sherardized coating continues to protect the steel from any further damage and corrosion.
- In using fluoropolymer coatings, the coating must only be applied to selected portions of the fastener. When seeking to coat internally threaded components and fasteners masking proves very difficult and costly in high volume production requirements. Alternatively, the sherardize coating is ideal for uniformly coating all areas of smaller and irregularly shaped items, without the adverse effect of peak build up.
- Relatively large amounts of polymer powder are required to achieve a generally uniform and continuous coating throughout, this can significantly raise the cost of the process as oppose to Sherardizing.
- Fluoropolymer coatings still may require primers, creating additional cost overall. Alternatively, the Sherardize coating readily accepts top coats, resulting in no need for expensive primers.
Xylan
Depending on the application and if a fluoropolymer coating is required, Sherardize UK Ltd is an approved applicator of the XYLAN® range of fluoropolymers, specialising in 1070 and 1424. We can offer a duplex coating consisting of both Sherardize and Xylan® coatings to provide ultimate protection and corrosion resistance as oppose to the protection offered through using both systems separately.
Fluoropolymers are probably best known as non-stick cookware coatings, however, they are now a used in aerospace, electronics, telecoms, automotive and defence industries. These coatings are a blend of high performance resins and lubricants, their unique properties give them exceptional corrosion, heat, chemical, electrical and wear resistance, a low co-efficient of friction and consistent tensioning.
Benefits and Applications of Xylan
- HIGH CORROSION RESISTANCE – widely used in the oil and gas industry, sub sea telecoms and fasteners.
- LOW FRICTION – fasteners, uniform torque/tension control, maximize flow and increases energy efficiency in fuel lines, valves and gaskets. Used as a dry lubricant on bearings, bushes, gears and slide panels. Noise reduction.
- EXCELLENT DIELECTRIC PROPERTIES – insulation in cables and connector assemblies in aerospace and construction for fire protection.
- CHEMICAL INERTNESS – gives protection in aggressive environments.
- WEAR RESISTANCE – performs even under pressure.
- HIGH PERFORMANCE – used in defence applications which operate in extreme conditions.
- WIDE TEMPERATURE OPERATING RANGE – minus 250˚C to plus 285˚C.
- UV RESISTANT AND AVAILABLE IN A WIDE RANGE OF COLOURS.