Steel shots are suitable for abrasive waterjet rock cutting and recycling because of the high hardness and magnetic properties of steel. This study evaluated the rock-cutting performance and recycling characteristics of steel shot waterjet. The rock-cutting responses of steel shot and garnet were compared at the same waterjet conditions. The used steel shot was collected and the particle-size changes were evaluated before reuse, and its cutting performance was re-evaluated. Overall, the steel shot waterjet yielded improvements in performance in the range of 30–50% compared with the garnet waterjet. Moreover, the recycled steel shot yielded a 50% reduction in cutting performance. Rust was observed on the surface of the used steel shot, the used steel shots were partially destroyed, and the debris on the abrasive surface needed to be removed by drying. The reusable steel shot left on the 80th sieve converged to 60% in each recycling run. The results of this study can be used to reduce the cost of abrasive waterjet and industrial waste.

中文翻译：

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钢丸在花岗石磨料水射流切割中的性能及再利用

钢丸由于钢的高硬度和高磁性，适用于磨料水射流岩石切割和回收。本研究评估了钢丸水刀的岩石切割性能和回收特性。在相同的水刀条件下比较了钢丸和石榴石的岩石切割响应。回收使用过的钢丸并在重新使用前评估其粒度变化，并重新评估其切削性能。总体而言，与石榴石水刀相比，钢丸水刀的性能提高了 30-50%。此外，回收的钢丸使切削性能降低了 50%。用过的钢丸表面有锈迹，部分用过的钢丸被破坏，磨料表面的碎屑需要通过干燥去除。留在第 80 个筛子上的可重复使用的钢丸在每次回收运行中收敛到 60%。这项研究的结果可用于降低磨料水射流和工业废物的成本。