• PT Youtube
  • PT Facebook
  • PT Linkedin
  • PT Twitter

INJECTION MOLDING & EXTRUSION: Screw/Barrel Combo Fights Wear

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Two nickel alloys resist highly filled and reinforced compounds.

Related Suppliers

A new plasticating unit package with extreme abrasion resistance to accommodate today’s highly filled molding and extrusion compounds was presented at NPE2015 by Nordson Polymer Processing Systems, New Castle, Pa. The new package combines two existing Nordson Xaloy products—X8000 screw encapsulation and X800 barrel inlay. X8000 is a nickel-based alloy with high tungsten carbide content that is applied to the entire screw surface using a two-step method that achieves a metallurgical bond rather than the purely mechanical bond formed by standard coatings of this type, Nordson says. What’s more, the X8000 coating is twice as thick as typical coatings.

The X800 barrel inlay is also a nickel alloy with tungsten carbide, which is said to be more wear resistant than iron-based, iron-chromium, or nickel-cobalt  alloys.

The accompanying photo shows results of wear testing on a competitive carbide coating (top), with poor adhesion and chipping, versus the relatively undamaged X800 coating (bottom).

Hand holding a crystal ball

We’d rather send you $15 than rely on our crystal ball…

It’s Capital Spending Survey season and the manufacturing industry is counting on you to participate! Odds are that you received our 5-minute Plastics survey from Plastics Technology in your mail or email. Fill it out and we’ll email you $15 to exchange for your choice of gift card or charitable donation. Are you in the U.S. and not sure you received the survey? Contact us to access it.

Help us inform the industry and everybody benefits.