Overhauling

The lifespan of your screws and barrels can be extended if they are checked and measured as part of your preventative maintenance program. Worn-out screws or barrels can be the reason for production losses. Rewelding existing screws or relining existing barrels are economical ways to extend the lifetime instead replacing them by new barrels. The lifetime of a screw depends on backpressure. Wear in cylinders is common, use of abrasive additives in the plastic can also cause premature wear of the barrel and screw .

We can reline barrels, whether they are simply hardened or bi-metal. It is possible to reuse a worn-out cylinder by honing it and matching it with a new, oversized screw.

 Possible overhauling applications are:

 - Screw cleaning

 - Screw dechroming/ chroming

 - Re-welding screws

 - Overhauling screw drives

 - Polishing screws

 - Straightening screws

 - Relining barrels

 - Grinding screw cores

 - Installing screenchangers

 - Renewing coatings on screw points

Extruplast is highly experienced in plastic extrusion, we can supply you with answers to all your extrusion related questions, whether they are about overhauling, complete new extruders or complete production lines.