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You are here: Home / Abrasion / C1000 Coated Rebuilt Screw – Extrusion, Abrasive Wear

C1000 Coated Rebuilt Screw – Extrusion, Abrasive Wear

December 11, 2018 by Marija G

The Problem:

This extrusion customer produces friction material for use in automatic braking assemblies for consumer products such as washing machines and lawn mowers. This is basic profile extrusion of a proprietary heavily filled mineral/fiber material. The equipment is a Bonnot extruder with a 4” interrupted-flight screw designed to process high load materials.

Standard protection for the feed screw has been complete weld encapsulation of Colmonoy 56, nickel-based hard facing. Typical batch size is about 360 lbs. and after 150 batches (3 to 4 months production) the C56 protection has severe erosion. Flight outside diameter is also reduced and output rate becomes uneconomical and the screw is removed and rebuilt.

The Solution:

A rebuilt screw was coated with XC1000 to a total thickness of .010” (0.25 mm) and installed in early June 2006.

Benefits:

The customer was extremely pleased with the improvement to screw life and process reliability. At six months of operation the coated screw has nearly twice the life of previous screws ability. with no indication of wear. The estimated savings compared to the previous C-56 screws is $8,000 to $10,000 annually.

Technical Specs:

A visit in November 2006 provided the following information:

BatchesTotal OutputWear Condition
Previous C56 Screw 150 54,000 lbs Severe root erosion, OD reduction
XC 1000 Screw 184 66,240 lbs No discernable wear, coating intact
Expectation800290,000 lbs

Filed Under: Abrasion Tagged With: Extrusion

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  • About Us
    • Shows and Events
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  • 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)
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  • Contact Us
    • Application Profile Form
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