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Wolfram Carbit Coatings

Feedscrew Coating Chart:
Surface Engineering's Extreme CoatingsTM process utilizes emerging thermal spray technologies to apply extremely wear resistant and/or corrosion resistant protective coatings to virtually any new or rebuilt injection molding or extrusion feedscrews. Our process provides a crack free and porosity free coating with hardness values over 60Rc and coating thickness' ranging from .005"-.030". This process completely eliminates the necessity for tool steels, chrome plating, flame hardening, or Nitriding; as the entire screw surface is coated, including the root, flight sides and flight lands. In addition to full encapsulation, our carbide coatings can be applied to the flight lands only; for single and twin feedscrews. Another unique characteristic of the process is the capability to rebuild flights on worn CPM9V® tool steal feedscrews.

The Coatings:

  • XC1000TM - 88% Tungsten Carbide (Wc), 12% Cobalt (Co) matrix. High abrasive wear applications (Fiberglass, mineral and magnetic filled polymers).
  • XC1000NiTM- 90% Tungsten Carbide (Wc), 10% Nickel (Ni) matrix.
    High abrasive wear applications with improved corrosion resistance (hydrochloric acid).
  • XC1000-17TM - 83% Tungsten Carbide (Wc), 17% Cobalt (Co) matrix.
    High abrasive wear applications with improved ductility (recommended for smaller screws).
  • XC9000TM - 88% Tungsten Carbide (Wc micron and nanometer particles) 12% Cobalt (Co) matrix. High abrasive wear applications with sub-micron particle abrasion (Ti02, Silica).
  • XC4000TM - 75% Chrome Carbide (Cr2C3), 25% Nickel Chrome (NiCr) matrix. High corrosion, high temperature and high abrasion applications (Fluoropolymers, bromine and PEEK).

(1)"CPM"®is a registered trademark of Crucible Specialty Materials.
(2) Provided wear is limited to approximately .015" per side or .030" overall.

 

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ETP Plastics B.V.
P.O. Box 105
7770 AC  Hardenberg
The Netherlands