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- Title
Granite cutting performance depending on the traverse speed in abrasive waterjet multi-cutting.
- Authors
Cha, Yohan; Lee, Hang-Lo; Kim, Jin-Seop; Oh, Tae-Min
- Abstract
The traverse speed influences the exposure time of the target to the cutting energy and the number of abrasive particles that impact the target. The number of abrasive particles that are confined within the effective jet diameter is identified as the areal number density. These particles suffer collisions and interference, resulting in energy loss. In this study, the effects of the water and abrasive flow rates and standoff distance on the performance of multi-cutting were evaluated, with the traverse speed as the main variable for rock cutting, by using the areal number density concept. The results showed that a higher traverse speed in single cutting increased the optimal abrasive flow rate, indicating that a greater number of abrasive particles effectively removed the target rock owing to reduced collision and interference. In multi-cutting, in which the same cutting energy is applied within the same operational time, an increase in the number of repetitions results in an increased cutting depth. It was found that a higher areal number density caused higher energy losses and decreased the efficiency, highlighting the effectiveness of a higher traverse speed in repetitive cutting. A partial dependence analysis and gradient boosted regression tree-based predictive model showed the high relative importance of the water flow rate and number of repetitions. This research proposes an economical strategy based on multi-cutting and suggests that the areal number density concept can be used to evaluate the cutting efficiency.
- Publication
International Journal of Advanced Manufacturing Technology, 2024, Vol 132, Issue 7/8, p3771
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-024-13571-2