Screw repair & Rebuild

Screw repair & Rebuild

Extruder Screws have the ability to be rebuilt to allow for multiple uses once the feedScrew has been worn beyond its processing capabilities. How does the extruder screw and barrel repair happen?

Upon arrival at IMR evaluation Department a screw is the subject of a complete inspection that details, among other things, the amount of flight and root wear as well as the structural integrity of the steel. A multitude of measurements are taken to determine whether the screw is a suitable candidate for rebuilding. These would be measurements such as the outside diameter of the flights, root depths and flight radii to determine wear. Dye checks are performed to those areas that appear to show structural fatigue to determine steel integrity. Upon the completion of the physical inspection a report is sent to the Engineering Department for review. It is at that point the full extent of the work required to bring theFeed Screw back within original specification is determined. Upon Engineering’s recommendations a quote is prepared and presented to the customer setting forth the work to be done, lead time and cost of the rebuild.