Pulsating water jet erosion effect on a brass flat solid surface
| Autor: | Jiří Klich, Ján Kepič, Karol Kovaľ, Zdenek Storkan, Dominika Lehocká, Sergej Hloch, Josef Foldyna, Lucie Krejčí, Frantisek Botko |
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| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Materials science Scanning electron microscope Mechanical Engineering Nozzle 02 engineering and technology Deformation (meteorology) Industrial and Manufacturing Engineering Computer Science Applications Brass 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Control and Systems Engineering visual_art Erosion visual_art.visual_art_medium Hydraulic machinery Composite material Software Body orifice Groove (music) |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 97:1099-1112 |
| ISSN: | 1433-3015 0268-3768 |
| DOI: | 10.1007/s00170-018-1882-4 |
| Popis: | The present study is focused on the disintegration effect of ultrasound-enhanced pulsating water jet (PWJ) technology on brass CW614N. The first part of the study discusses the effect of a combination of factors based on the full factorial design of experiments (DoE) 33. Traverse speed v (mm s−1), circular nozzle orifice diameter d (mm), and hydraulic power P h (kW) are selected as the disintegration variable factors. Mass material removal Δm (mg s−1) is evaluated based on the change in these variable factors. In the next part, a verification experiment is performed with by varying the traverse speed between 0.2 and 1.4 mm s−1. The mathematical model calculated in DoE is confirmed. Moreover, the significant effect of hydraulic power P h (kW) on the efficiency of the PWJ disintegration is demonstrated. The last part of the study discusses the surface and subsurface effects on a PWJ after brass CW614A erosion. A sample disintegration with hydraulic power P h = 13 kW and circular nozzle diameter d = 1.321 mm is observed. Optical profilometry and scanning electron microscopy are performed to visualise the surface erosion of a selected groove. A significant mass material removal is observed from the groove surface, and the disintegrated surface is characterised by erosion and crater formation. A slight cold deformation with a maximum depth of 200 μm is detected in the subsurface layer. The experiment and results present a part of an extensive research focused on describing the PWJ disintegration efficiency for metallic materials. |
| Databáze: | OpenAIRE |
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