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Extrusion Screws :: |
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| Most extrusion screws are made from 4140 and chrome plated with some type of hardsurfacing on the flight tops. L/D ratios tend to be greater than injection screws, but typically have similar feed, transition, and metering sections. These screws are often designed with some type of mixing section and/or barrier flight. Concor can help you determine the best screw material and design for your application. Concor has been manufacturing smaller diameter extruders out of through-hardened tool steels. |  |
Flight OD wear resistance can be improved by welding a hard surfacing
material to the top of the flights. These materials vary in hardness,
resistance to cracking, abrasion and corrosion. |
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