Kador's Carole Park workshop recently delivered a new tee section for a Bucyrus 8200 dragline upgrade.
The contract was to fabricate, trial-assemble, weld, heat-treat and paint the eight large 114mm plates, prior to loading out them out to form four 21t ring sections. When complete, these make up a 15m-diameter assembly.
A combination of manual and semi-automated welding processes were used to minimize distortion and ensure dimensional accuracy, for trouble-free fit-up when the quadrants were installed on the dragline.
After fabrication, the quadrants were stress-relieved in a purpose-built oven assembled in the workshop.
Twitter