EXTRUSION: Tungsten Carbide Coating of Plasticizing Feedscrews

Coating addresses environmental concerns with chrome plating and the need for better protection against wear and corrosion.

Related Suppliers

Extreme Coatings, St. Petersburg, Fl., will introduce CarbideX CPR for encapsulation of conical and parallel twin feedscrews at K 2016 (Hall 13, Stand B91-6). Extreme Coatings says its Chrome Plating Replacement, or CPR, provides a viable alternative to chrome plating. Unlike chrome plating, CPR is nearly porosity free, so corrosive gasses from materials like PVC cannot attack the base of the screw.

In applications where abrasive fillers cause premature wear, Extreme Coatings offers tungsten carbide encapsulation for greater wear resistance combined with a high level of corrosion resistance. At the show, the company will have samples of tungsten and chromium carbide encapsulation on a variety of components, including single screw injection molding and extrusion screws, twin extrusion screws, and continuous mixing rotors, as well as Extreme’s Cushion Master carbide tip assemblies for injection molding screws.