New coating method stops pinholes
19 Oct 2008
Victrex high performance polymer coatings have helped German company, STE Dichtungstechnik significantly improved its special multi-layer powder coating process. STE specialises in the development and application of high quality PEEK coatings marketed under multislide brand for markets that include automotive, electronics, cookware and medical.
Victrex helped STE improve performance by using a number of its Vicote coating powders in the manufacture of multislide. Combined with new manufacturing equipment, this has overcome the problem of pinholes forming during processing.
When compared to fluorocarbon polymer systems such as Teflon, adhesion to the substrate has been significantly improved so that the coating does not flake off instantly when damaged. And, according to STE, the continuous temperature resistance of Vicote is a distinct advantage over other plastic coatings.
A particular benefit that multislide coatings have over ceramic coatings is their ductile, non-brittle behaviour that virtually eliminates the danger of coating flake-off. Moreover, the wear resistance which the new coatings deliver makes them an excellent fit for many tribological-pairs and can be adapted to specific requirements by STE.
Thicker coatings of Vicote enhanced multislide, up to 0.2 to 0.4 mm, can now be applied to fulfil more stringent demands regarding corrosion protection, electrical or chemical insulation and simultaneous exposure to high temperatures, mechanical loads or steam.
Further advantages are, high volume parts with difficult geometries can now be cost-effectively coated whilst maintaining the quality of the uncoated component. Moreover, specific surface properties such as non-stick and sliding properties can be produced with the new multislide coating system.
Victrex has Application Technology Centers in Europe and Asia to assist customers with end-use application testing, simulation and analysis. It also has Manufacturing Technology Centers dedicated to in-house manufacturing, prototyping facilities, and application process expertise.






