Screw rebuilding
The steps in the rebuild operation
When the worn screw has been delivered it is
- measured
- a report is issued
- The required type of hard facing is selected by professional analysis of the wear, taking into account the type of barrel inlay.
- The final details of the finish are discussed with the customer and quoted
Applying the hard-facing
When the protective layer has been chosen it is welded on by state-of-the-art PTA welding machines. Before applying the hard facing the screw is first under ground to remove the heat effected material.
Pre-grinding the screw
When the protective layer has been applied the flights are pre-ground and the edges milled. With our range of up-to-date, multi-purpose machines we can meet any conceivable requirements in house.
Finishing the screw
The finish grinding completes the reconditioning process. Screws are nitrided, chrome plated or finished as requested.