Abrasive Water Jet Polishing on Zr-Based Bulk Metallic Glass

Loc, Pham Huu; Shiou, Fang‐Jung

doi:10.4028/www.scientific.net/amr.579.211

Cited by 10 publications

(8 citation statements)

References 8 publications

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“…In the last two decades, the AWJ investigations have focused not only on the "traditional" cutting [16,17] but also on milling of aerospace materials [18][19][20][21], turning [22], precise piercing [23], drilling [24], grinding [25] and polishing of metallic glass [26] or the very hard materials [27]. The role of an abrasive material is also studied very often.…”

Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

et al. 2021

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The necessity of monitoring the abrasive waterjet (AWJ) processes increases with the spreading of this tool into the machining processes. The forces produced on the workpiece during the abrasive waterjet machining can yield some valuable information. Therefore, a special waterjet-force measuring device designed and produced in the past has been used for the presented research. It was tested during the AWJ cutting processes, because they are the most common and the best described up-to-date AWJ applications. Deep studies of both the cutting process and the respective force signals led to the decision that the most appropriate indication factor is the tangential-to-normal force ratio (TNR). Three theorems concerning the TNR were formulated and investigated. The first theorem states that the TNR strongly depends on the actual-to-limit traverse speed ratio. The second theorem claims that the TNR relates to the cutting-to-deformation wear ratio inside the kerf. The third theorem states that the TNR value changes when the cutting head and the respective jet axis are tilted so that a part of the jet velocity vector projects into the traverse speed direction. It is assumed that the cutting-to-deformation wear ratio increases in a certain range of tilting angles of the cutting head. This theorem is supported by measured data and can be utilized in practice for the development of a new method for the monitoring of the abrasive waterjet cutting operations. Comparing the tilted and the non-tilted jet, we detected the increase of the TNR average value from 1.28 ± 0.16 (determined for the declination angle 20° and the respective tilting angle 10°) up to 2.02 ± 0.25 (for the declination angle 30° and the respective tilting angle of 15°). This finding supports the previously predicted and published assumptions that the tilting of the cutting head enables an increase of the cutting wear mode inside the forming kerf, making the process more efficient.

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Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

et al. 2021

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“…Although quite extensive research has been carried out to find the ways to use the AWJ for other machining operations than cutting, such as milling [ 1 ], turning [ 2 ], piercing [ 3 ], grinding [ 4 ] and polishing [ 5 ], cutting remains its most widely used application. The main advantage of the AWJ machining is its ability to cut through almost each type of material of any given thickness if the jet energy is sufficient.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Several Physical Phenomena Measured on the Metallic Materials Cut by Abrasive Water Jets (AWJ)

et al. 2022

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Cutting using an abrasive water jet is a complex process involving several physical phenomena. This research studies some of them, mostly the influence of selected variables on the measured forces and vibrations. The traverse speed represents one of the key parameters when cutting using the AWJ. In the presented research, a set of experiments was performed on twelve different metal samples, while the force sensor measured the exerted forces and accelerometers measured the vibrations. Ten different types of steel samples of the same dimensions were cut applying five different traverse speeds. The data obtained during these measurements show that an increase in the traverse speed leads to an increase in the measured forces and vibrations. An analogous experiment performed on bronze and duralumin samples of the same dimensions, having applied higher speeds to compensate for the difference in the material structure and properties, completes the presented data. The most important results of the research are that exerted forces in the z-axis are higher than those in the x-axis, whereas measured vibrations are higher in the x-axis. According to our research, the elemental structure, especially the carbide formation, affects the measured forces and vibrations substantially.

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“…The machining tool “abrasive waterjet” (AWJ) has been used as a modern machining technology for about 40 years. It is either applied or tested for use in cutting [ 1 ], milling [ 2 ], turning [ 3 ], piercing [ 4 ], grinding [ 5 ] or polishing [ 6 ]. AWJ is capable of machining materials independently of their thickness, provided that sufficient energy is supplied [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Abrasive Waterjet (AWJ) Forces—Indicator of Cutting System Malfunction

et al. 2021

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Measurements enabling the online monitoring of the abrasive waterjet (AWJ) cutting process are still under development. This paper presents an experimental method which can be applicable for the evaluation of the AWJ cutting quality through the measurement of forces during the cutting process. The force measuring device developed and patented by our team has been used for measurement on several metal materials. The results show the dependence of the cutting to deformation force ratio on the relative traverse speed. Thus, the force data may help with a better understanding the interaction between the abrasive jet and the material, simultaneously impacting the improvement of both the theoretical and empirical models. The advanced models could substantially improve the selection of suitable parameters for AWJ cutting, milling or turning with the desired quality of product at the end of the process. Nevertheless, it is also presented that force measurements may detect some undesired effects, e.g., not fully penetrated material and/or some product distortions. In the case of a proper designing of the measuring device, the force measurement can be applied in the online monitoring of the cutting process and its continuous control.

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Abrasive Water Jet Polishing on Zr-Based Bulk Metallic Glass

Cited by 10 publications

References 8 publications

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

Abrasive Waterjet (AWJ) Forces—Potential Indicators of Machining Quality

Analysis of Several Physical Phenomena Measured on the Metallic Materials Cut by Abrasive Water Jets (AWJ)

Abrasive Waterjet (AWJ) Forces—Indicator of Cutting System Malfunction

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