Extruder crosshead housing repairs

Two extruder  X – Head  R-352 and 24  units suffered breakage in application and were brought in for repair. These Extrusion crosshead casings are extremely hard – our scleroscope hardness test measured 62Rockwell. A center shaft was machined to size / used to maintain alignment and size - whist the sections were clamped together under high load with a porta-power hydraulic ram. Carbide drills, taps and milling cutters were used to machine the body and in fitment of high tensile [tool steel] Masterlocks. Replacement units were ex Switzerland with an ETA of 6 months – each unit took around 1 week to repair and were in service  until new X-heads arrived.