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Extreme Coatings

Call: 888-367-2569

Plastics Industry Association Member

Engineered Surfaces to Extend Service Life and Performance

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    Reduce Replacement Costs for Mud Rotors
    HVOF CPR delivers more abrasion and corrosion resistance than hard chrome plating (HCP) - even in high chloride environments
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    Twin Feedscrews
    Our high percentage carbide layer can provide from two to four times more wear life depending on fill loading.
    Plastic Injection Molding
  • Single Feedscrews
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    Feedscrews
    Our coatings are perfect for injection molders and extruders when processing fiberglass, calcium carbonate, titanium dioxide and metals, ceramic or other highly abrasive fillers.
  • Mixer-Extruders
    Continuous Mixing Rotors
    Our C1000 tungsten carbide has been used as chrome replacement in aggressive applications. C1000 doubles the working life of rotors compared to hard chrome plating.
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You are here: Home / Applications / Plastic & Rubber Industries / Co-Rotating Twin Feedscrews

Co-Rotating Twin Feedscrews

Co-rotating twinscrew extruders are the machine of choice to compound resins and add fillers to a product. These machines have the benefit of a small footprint, short L/D, high throughput rates at lower melt temperatures and a self-wiping action flight to flight.

These machines are usually starve-fed and the normal filled volume and pressure in the machines is very low. As conveying elements transition to kneading elements, filled volume approaches 100% and pressure spikes. It is in this transition that most wear occurs, in the last conveying element and the first kneading blocks.

Extreme Coatings has developed our SF coatings to bring our success in single and parallel twin screws to co-rotating screw designs.

We apply .030” (.75 mm) coating thickens (.060”, 1.4 mm overall) to an element that has been specially pre-ground to accept this layer of coating. A post coating furnace fusing ensures this layer has a metallurgical bond to the element before final grinding and polish.

The result is a high percentage carbide layer, higher than used on traditional twinscrew elements, which can provide from two to four times more wear life depending on fill loading.

Extreme Coatings is working with major equipment manufacturers to refine the process and improve application techniques and coating formulations.

The targeted use of carbide coated elements in high pressure zones of co-rotating extruders can help maximize equipment life, maintain consistent production, ensure product quality, and reduce operating costs.

Click here to increase the life of your mud rotors
Click here to increase the life of your extrusion & feed screws
Extreme Coatings

2895 46th Ave N - St. Petersburg, FL 33714

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888-367-2569

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MENU
  • Home
  • About Us
    • Shows and Events
    • News
  • Our Processes
    • High Velocity Thermal Spray
    • The Process
    • Encapsulation Protection
      • Full Encapsulation of Feedscrews
      • Partial Encapsulation of Feedscrews
    • Chrome Plating Replacement
      • Feedscrews, Mixing Rotors, etc.
      • Mud Rotors and Downhole Tools
  • Applications
    • Plastic & Rubber Industries
      • Feedscrews
      • Parallel Twin Feedscrews
      • Co-Rotating Twin Feedscrews
      • Ultrasonic Welding Horns
      • Cushion Master
      • Continuous Mixing Rotors
      • Mixer Bodies
      • Extrusion Dies, Die Plates, Sheet Dies
      • Granulator Knife Blades
    • Oil & Gas Industry
      • Downhole Mud Rotors
      • Mandrels
    • Motorsports Industry
    • Marine Anti-Fouling
  • Technical Resources
    • Coating Formulas
      • Tungsten/Chromium Carbide
      • NiBoride
      • Other
    • Test Results
      • Abrasive Wear Test ASTM G65
      • Adhesive Wear Test ASTM G77
    • Case Studies
    • FAQs
    • Company Literature
    • ROI
    • Videos
  • How to Buy
    • Our Distributors
    • Purchase Encouragement Program (PEP)
    • Warranty
  • Contact Us
    • Application Profile Form
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