Experimental Investigation of Hard Rock Breaking Using a Conical Pick Assisted by Abrasive Water Jet

Liu, Songyong; Zhou, Fangyue; Li, Hongsheng; Chen, Yueqiang; Wang, Fengchao; Guo, Chuwen

doi:10.1007/s00603-020-02168-2

Cited by 42 publications

(13 citation statements)

References 30 publications

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“…In AWJM, a higher level of waterjet pressure indicates an equivalent performance with abrasive mass flow rate [52]. An increasing water pressure along with the flow of abrasives, generates high velocity, resulting in a stronger impact of abrasive particles, which in turn decreases the roughness of the cut surface [53]. Hence, it is evident from the results of this study that increases in abrasive flow rate and waterjet pressure up until a particular level enhances the smoothening of cut surfaces.…”

Section: Optimisation With Taguchi S/n Ratiomentioning

confidence: 60%

Analysis and Optimization of Process Parameters in Abrasive Waterjet Contour Cutting of AISI 304L

Llanto

Vafadar

Aamir

et al. 2021

Metals

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Abrasive waterjet machining is applied in various industries for contour cutting of heat-sensitive and difficult-to-cut materials like austenitic stainless steel 304L, with the goal of ensuring high surface integrity and efficiency. In alignment with this manufacturing aspiration, experimental analysis and optimization were carried out on abrasive waterjet machining of austenitic stainless steel 304L with the objectives of minimizing surface roughness and maximizing material removal rate. In this machining process, process parameters are critical factors influencing contour cutting performance. Accordingly, Taguchi’s S/N ratio method has been used in this study for the optimization of process parameters. Further in this work, the impacts of input parameters are investigated, including waterjet pressure, abrasive mass flow rate, traverse speed and material thickness on material removal rate and surface roughness. The study reveals that an increasing level of waterjet pressure and abrasive mass flow rate achieved better surface integrity and higher material removal values. The average S/N ratio results indicate an optimum value of waterjet pressure at 300 MPa and abrasive mass flow rate of 500 g/min achieved minimum surface roughness and maximum material removal rate. It was also found that an optimized value of a traverse speed at 90 mm/min generates the lowest surface roughness and 150 mm/min produces the highest rate of material removed. Moreover, analysis of variance in the study showed that material thickness was the most influencing parameter on surface roughness and material removal rate, with a percentage contribution ranging 90.72–97.74% and 65.55–78.17%, respectively.

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Section: Optimisation With Taguchi S/n Ratiomentioning

confidence: 60%

Analysis and Optimization of Process Parameters in Abrasive Waterjet Contour Cutting of AISI 304L

Llanto

Vafadar

Aamir

et al. 2021

Metals

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“…Research to date has explored differing operating mechanisms of AWJM for various industrial conditions and applications. Table 2 enumerates AWJM applications in different industry sectors with regards to specific material usage [49,[70][71][72], which shows that AWJM applications cover a vast range of industrial domains. [49,[70][71][72].…”

Section: Materials Typementioning

confidence: 99%

“…Their experiment showed that a very high waterjet pressure negatively affects the surface roughness as the thickness of the material decreases. A high-level water pressure produces high velocity, resulting in a stronger impact of abrasive particles [49]. Ultra-high-pressure (UHP) AWJM pumps provide water pressure to the cutting head at continued pressures from 40,000 psi (276 MPa) to 87,000 psi (600 MPa) and have progressed its industrial application since its commercialization due to its wide range of application, i.e., 2D shape cutting, surface grounding, weight reduction of space-borne mirrors, and various machining tasks tasks [84].…”

Section: Hydraulic Systemmentioning

confidence: 99%

Recent Progress Trend on Abrasive Waterjet Cutting of Metallic Materials: A Review

et al. 2021

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Abrasive water jet machining has been extensively used for cutting various materials. In particular, it has been applied for difficult-to-cut materials, mostly metals, which are used in various manufacturing processes in the fabrication industry. Due to its vast applications, in-depth comprehension of the systems behind its cutting process is required to determine its effective usage. This paper presents a review of the progress in the recent trends regarding abrasive waterjet cutting application to extend the understanding of the significance of cutting process parameters. This review aims to append a substantial understanding of the recent improvement of abrasive waterjet machine process applications, and its future research and development regarding precise cutting operations in metal fabrication sectors. To date, abrasive waterjet fundamental mechanisms, process parameter improvements and optimization reports have all been highlighted. This review can be a relevant reference for future researchers in investigating the precise machining of metallic materials or characteristic developments in the identification of the significant process parameters for achieving better results in abrasive waterjet cutting operations.

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“…Therefore, methane drainage plays a key role in eliminating gas outbursts. To enhance CBM recovery or drainage efficiency, water jet technology has been proposed and has been proven effective [8][9][10][11][12]. However, in the low permeability soft coal seams, the use of water jet technology frequently leads to the collapse of a borehole and the inhabitation of the gas desorption [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Gas Jet Coal-Breaking Behavior: An Elliptical Crushing Theoretical Model

Wang

Yang

et al. 2021

Geofluids

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Coalbed methane (CBM) is a source of clean energy and has been recovered in past decades all over the world. Gas dynamic disaster is the primary disaster in outburst coal, and methane drainage plays a key role in eliminating this danger. As an efficient technology, a gas jet is widely used in CBM development and methane drainage. In this work, the full impinging process of coal and rock fracturing by a supersonic gas jet was studied. To understand how jet parameters affect coal and rock fracturing results, an elliptical crushing theoretical model was proposed. In addition, a laboratory experiment was designed to examine the proposed model, and four key parameters affecting the fracturing results were studied. The results show that different from the monotonic variation of theoretical values, there is a turning point in the variation of experimental values under some parameters. Considering the influence of the depth and radius of the erosion pit, the rock-breaking effect is better when the nozzle size is 2.75 Ma. The optimal target distance is 30 mm, and the impact pressure of a gas jet should be continuously increased in order to achieve certain rock-breaking effects under the impact of the jet.

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Experimental Investigation of Hard Rock Breaking Using a Conical Pick Assisted by Abrasive Water Jet

Cited by 42 publications

References 30 publications

Analysis and Optimization of Process Parameters in Abrasive Waterjet Contour Cutting of AISI 304L

Analysis and Optimization of Process Parameters in Abrasive Waterjet Contour Cutting of AISI 304L

Recent Progress Trend on Abrasive Waterjet Cutting of Metallic Materials: A Review

Gas Jet Coal-Breaking Behavior: An Elliptical Crushing Theoretical Model

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