Artykuły w czasopismach: „ABRASIVE JET MACHINING”

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Madhu, S., i M. Balasubramanian. "A Review on Abrasive Jet Machining Process Parameters". Applied Mechanics and Materials 766-767 (czerwiec 2015): 629–34. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.629.

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Abrasive jet machining (AJM) also known as abrasive micro-blasting or Pencil blasting is an abrasive blasting machining process that uses abrasives propelled by high velocity gas to erode material from the work piece. It has been applied to rough working such as deburring and rough finishing, machining of ceramics and electronic devices. AJM has become a useful technique for micro machining. It has various distinct advantages over the other non-traditional cutting methods, which are high machining versatility, minimum stresses on the substrate. This paper deals with several experiments that have been conducted by many researchers to assess the influence of abrasive jet machining (AJM) process parameters such as type of abrasive Particle , Abrasive Particle size, Jet pressure Nozzle tip distance. Various experiments were conducted to assess the influence of abrasive jet machine.

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Arivazhagan, R., C. Dominic Savio, K. Aakash, M. Ahamed Abuthahir i C. Ganesh. "An Investigation on Cut Quality of Aluminum Matrix Composites Cut by Abrasive Waterjet". International Journal for Research in Applied Science and Engineering Technology 10, nr 4 (30.04.2022): 535–43. http://dx.doi.org/10.22214/ijraset.2022.41263.

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Abstract: Metal matrix composites are difficult to machine in traditional machining methods. Abrasive water jet machining is a state-of-the art technology which enables machining of practically all engineering materials. Abrasive water jet machining is a very efficient machining process which overcomes tool wear issues and cutting temperature issues. This experimental investigates a particular study performed on hybrid metal matrix composites prepared by AA6082 and reinforced 7.5% of TiB2 and 1% graphite in aluminum alloy and processed with abrasive water jets that are formed with garnet 80 mesh size. Particularly roughness average majorly influences with water jet traverse speed. Among interaction effects stand of distance is majorly influenced with geometrical properties except diameter error. Although developing the statistical models for predicting the machining characteristics and geometrical accuracy and the study carried out in this work would help to choose the parameters carefully. Keywords: Abrasive Waterjet Cutting, Abrasives, Metal Matrix Composites, Sand Casting

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KURIYAGAWA, Tsunemoto, Norio YOSHIDA i Katsuo SYOJI. "Machining Characteristics of Abrasive Jet Machining." Journal of the Japan Society for Precision Engineering 64, nr 6 (1998): 881–85. http://dx.doi.org/10.2493/jjspe.64.881.

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Liu, Zeng Wen, i R. Y. Liu. "Study on Pre-Mixed Micro Abrasive Water Jet Machining System". Applied Mechanics and Materials 618 (sierpień 2014): 475–79. http://dx.doi.org/10.4028/www.scientific.net/amm.618.475.

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This paper conducts a study on a pre-mixed micro abrasive water jet machining system. A new kind of abrasive mixing tank and the jet system are designed and tapped for the pre-mixed micro abrasive water jet machining system. The performances of the pre-mixed micro AWJ machining system are tested, and some polishing experiments are conducted for hard-brittle materials such as silicon nitride. The results show the feasibility and the advantage of the pre-mixed micro abrasive water jet machining system for polishing hard-brittle materials.

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Grover, Punit, Sanjay Kumar i Qasim Murtaza. "Study of Aluminum Oxide Abrasive on Tempered Glass in Abrasive Jet Machining Using Taguchi Method". International Journal of Advance Research and Innovation 2, nr 1 (2014): 201–5. http://dx.doi.org/10.51976/ijari.211432.

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The abrasive jet machining (AJM) is a non-conventional machining process in which a abrasive particles are made to impinge on the work material at a high velocity. The jet of abrasive particles is carried by carrier gas or air. The high velocity stream of abrasive is generated by converting the pressure energy of the carrier gas or air to its kinetic energy . The high velocity abrasive particles remove the material by micro-cutting action as well as brittle fracture of the work material . Abrasive jet machining is generally good for cutting hard or brittle materials and is usually performed to furnish machining or finishing operation such as cutting, deburring, etching, etc. This project deals with the fabrication of the Abrasive Jet Machine and machining on tempered glass, calculating the material removal varying various performance parameters like pressure, angle abrasive grit size so on. Before performing the experiment ,fabrication done on AJM which are also discussed.. The different problem faced while machining on tempered glass are also discussed.Taguchi method and ANOVA is used for analysis of material removal rate .

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Janković, Predrag, Miroslav Radovanović, Oana Dodun, Miloš Madić i Dušan Petković. "Aspects of Machining Parameter Effect on Cut Quality in Abrasive Water Jet Cutting". Applied Mechanics and Materials 809-810 (listopad 2015): 201–6. http://dx.doi.org/10.4028/www.scientific.net/amm.809-810.201.

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Abrasive water jet machining is frequently used in industry. It is one of the most versatile processes in the world. The basic advantages of abrasive water jet machining is that no heat affected zones or mechanical stresses are left on an abrasive water jet cut surface, high flexibility and small cutting forces. Although this cutting technology includes many advantages, there are some drawbacks. For instance, abrasive water jet cutting can produce tapered edges on the kerf of workpiece being cut. This can limit the potential applications of abrasive water jet cutting, if further machining of the edges is needed to achieve the engineering tolerance required for the part. The machining parameters have a great influence on these phenomena. The aim of this paper is to investigate the cut quality of EN AW-6060 aluminium alloy sheets under abrasive water jets. The experimental results indicate that the feed rate (nozzle traverse speed) of the jet is a significant parameter on the surface morphology.

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Sreekesh, K., i P. Govindan. "Experimental Investigation and Analysis of Abrasive Water-Jet Machining Process". Asian Review of Mechanical Engineering 2, nr 2 (5.11.2013): 42–48. http://dx.doi.org/10.51983/arme-2013.2.2.2347.

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The abrasive water-jet machining is an unconventional and eco-friendly technology used for industrial applications. This paper presents a comprehensive experimental investigation of the process, based on the material removal mechanism. The quality of surfaces machined using the process is investigated in detail. The results have indicated that surface roughness values (Ra in μm) vary between 3.5 and 5.5. The flow of abrasives, their speed and size influence quality of the machined surfaces. As the abrasive flow increases, the surface finish improves drastically. The optimum abrasive flow rate for obtaining the minimum surface roughness of 4.2 μm was corresponding to the maximum level of 7 g/s. This study has also indicated a possibility of applying abrasive water jet machining for fine polishing of machined surfaces, thereby validating the earlier investigations.

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Wang, Hongqi, Ruifu Yuan, Xinmin Zhang, Penghui Zai i Junhao Deng. "Research Progress in Abrasive Water Jet Processing Technology". Micromachines 14, nr 8 (29.07.2023): 1526. http://dx.doi.org/10.3390/mi14081526.

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Abrasive water jet machining technology is an unconventional special process technology; its jet stream has high energy, and its machining process is characterized by no thermal deformation, no pollution, high applicability, and high flexibility. It has been widely used for processing different types of materials in different fields. This review elaborates on the basic principles and characteristics of abrasive water jet processing, the mechanism of erosion, the simulation of the processing, the influence of process parameters in machining removal, and the optimization of improvements, as well as introduces the current application status, new technology, and future development direction of abrasive water jet technology. This review can provide an important information reference for researchers studying the machining processing of abrasive water jet technology.

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Tsai, Feng Che, Yann Long Lee i Ju Chun Yeh. "The technical development of titanium alloy surface process using electrochemical abrasive jet machining". Industrial Lubrication and Tribology 70, nr 8 (12.11.2018): 1545–51. http://dx.doi.org/10.1108/ilt-05-2017-0119.

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Purpose This paper aims to develop an electrochemical abrasive jet machining (ECAJM) technology to investigate the surface machining effect of Ti-6Al-4V alloy. Design/methodology/approach First, the ECAJM equipment was set up, and a series of experiments for the surface machining of Ti-6Al-4V alloy was performed. Findings The experimental results show that the flowing abrasives of 0.05 Wt.% can effectively remove the TiO2 oxide film of Ti-6Al-4V alloy surface. In addition, the flowing abrasives produce cutting machining effect on the surface of titanium aluminum alloy, and the oxide film can be removed effectively. For the case of machining pressure of 0.4 Mpa and machining gap of 0.4 mm, the processing efficiency can be achieved up to 20 µm/s. Originality/value Under different machining pressure, the flowing abrasive with high kinetic energy impacting the Ti-6Al-4V alloy surface and the oxide film produced from the electrolytic reaction process can be removed effectively, thereby enhancing the efficiency of electrochemical machining process.

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Kurbegovic, Ramiz, i Mileta Janjic. "Jet lagging in abrasive water jet cutting of high-speed tool steel". IMK-14 - Istrazivanje i razvoj 27, nr 2 (2021): 73–80. http://dx.doi.org/10.5937/imk2102073k.

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Abrasive water jet machining is a very efficient unconventional method for contour cutting of different types of materials. As one of the main characteristics of the quality of surfaces machined with this method is curved lines that appear during machining. These lines are a consequence of the deviation of the abrasive water jet from its ideal vertical line, jet lagging, which are the cause of machining errors. The aim of this work is to investigate the influence of machining parameters on jet lagging. The samples of high-speed steel EN HS6-5-2 (JUS c.7680) were machined with an abrasive water jet under varying working pressure, traverse speed, abrasive mass flow rate, and stand-off distance. The jet lagging was measured at twenty places along with the depth of cut, and based on these results, the relationship between the jet lagging and machining parameters has been formed. In order to correctly select the process parameters, an empirical model for the prediction of jet lagging in abrasive waterjet cutting of high-speed steel EN HS6-5-2 was developed using regression analysis. This developed model has been verified with the experimental results that reveal high applicability of the model within the experimental range used.

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Zhang, Feng Lian. "Machining Mechanism of Abrasive Water Jet on Ceramics". Key Engineering Materials 426-427 (styczeń 2010): 212–15. http://dx.doi.org/10.4028/www.scientific.net/kem.426-427.212.

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Engineering ceramics feature resistance to high temperature, corrosion, wear and hot impact. However, it is difficult to machine this material in conventional machining methods because of its high hardness and brittleness as well as inconductivity, thus restricting its application area. In recent years, more and more importance has been attached to the new machining method of engineering ceramics, i.e. abrasive water-jet. Feature high efficiency and low cost, the method can be used to process the products of complex shape. However, abrasive water-jet machining of advanced ceramics is a very complex process. The effect of machining on brittle materials, and advanced ceramic materials in particular, have not yet been very well understood. The present research investigates the effect of abrasive water-jet machining on ceramics. The study will increase the general understanding of the machining phenomena for more successful application of abrasive water-jet machining on brittle materials.

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Shakouri, Ehsan, i Mohammad Abbasi. "Investigation of cutting quality and surface roughness in abrasive water jet machining of bone". Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 232, nr 9 (27.07.2018): 850–61. http://dx.doi.org/10.1177/0954411918790777.

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The abrasive water jet machining is known as a cold cutting process and can be effective for developing cut in the bone in orthopedic surgery to prevent thermal necrosis. This research examined surface roughness and cutting quality of bovine femur bone using abrasive water jet machining. Furthermore, the effect of three parameters was studied including water pressure, traverse speed, and the type of abrasive particles. The feed rate of the abrasive particles was considered 100 g/min, and the levels obtained from pure water jet cutting, bone powder abrasive water jet machining, and sugar abrasive water jet machining were compared with each other. Application of bone powder as an abrasive particle caused improved cutting quality, when compared with pure water jet, and in the best case, it resulted Ra and Rz values of 7.36 and 54.76 μm, respectively at the pressure of 3500 bar and traverse speed of 50 mm/min. The minimum surface roughness was obtained using sugar abrasive particles at the pressure of 3500 bar and traverse speed of 50 mm/min. The values of Ra and Rz parameters measured at the most desirable state were 3.87 and 19.72 μm, respectively. The results suggested that use of sugar as an abrasive material, in comparison with pure water jet and bone powder water jet, resulted in improved cutting quality. Furthermore, elevation of water pressure and reduction of traverse speed had a significant effect on improving surface roughness.

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OKITA, Yuji, i Keita KASHIWAGI. "Abrasive Suspension Jet Machining with Stabilized Abrasive Concentration". Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 (2020): 07a4. http://dx.doi.org/10.1299/jsmecs.2020.58.07a4.

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Nouraei, H., A. Wodoslawsky, M. Papini i J. K. Spelt. "Characteristics of abrasive slurry jet micro-machining: A comparison with abrasive air jet micro-machining". Journal of Materials Processing Technology 213, nr 10 (październik 2013): 1711–24. http://dx.doi.org/10.1016/j.jmatprotec.2013.03.024.

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Zhang, Yong, Cheng Guang Zhang, Hai Dai, Ying Mou Zhu i Yong Chao Ji. "Experimental Study on Electrochemical Abrasive Jet Machining". Key Engineering Materials 579-580 (wrzesień 2013): 310–13. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.310.

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This paper puts forward a kind of new technology for metal matrix difficult-to-machine materials based on compound energy field. The new technology combine electrochemical jet machining and abrasive jet machining technology, which obtain the high quality of processing surface and greatly improve processing efficiency. Aiming at the new technology, the experimental device of compound machining is established, a large number of process experiments are carried out. The different process parameters are studied for the influence of the machining efficiency, including the machining gap, voltage and jet pressure. The experimental results show that the compound machining can be applied to machining or polishing complex shape parts of metal matrix structure difficult-to-machine materials, so it has widely application prospects.

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Rai, Nikhil, i Keshav Kumar Jha. "Experiment of Input Parameters on Abrasive Water Jet Machining". Journal of University of Shanghai for Science and Technology 23, nr 05 (15.05.2021): 216–22. http://dx.doi.org/10.51201/jusst/21/05137.

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This analysis looks at the impact of modifying the coarse water jet wounding limitations on the disorder of the work piece’s superficial layer. Air Jet for Abrasiveness The aerospace industry mostly uses machining to remove high-métier components and additional composites. The majority of his uses are in the machining of a gas turbines, engines, spacecraft, atomic reactors, and pumps, among other things. Rough waterjet machining is a new machining technique in which materials a is removed by abrasion. A high-velocity watercourse of abrasive subdivisions combined through purified water is directed at the work superficial. The current research focuses on the experimental investigation and assessment of abrasive H2O jet machining procedure using reaction surface technique to assess the technical factors influencing the machining efficiency of CFRP laminate. Kerf candle, delamination, material elimination rate, and superficial roughness were found to be affected by standoff coldness, feedstuff rate, and jet strain. The material connected parameter, location of fiber, has been also found to touch the machining performance. Using Taguchi’s principle, Design of Experimentations are used to determine the impact of process strictures on optimal environment. To determine the best conditions, a series of tests are carried out. Method parameter optimization is expected. To verify the desired degree of Processes parameter prediction, a conformation experiment is carried out.

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Reddy, Y. Rameswara. "Response Optimization of Machining Parameters using MCDA-Vikor Method for Acrylic Glass with AHAJM". International Journal for Research in Applied Science and Engineering Technology 11, nr 7 (31.07.2023): 217–25. http://dx.doi.org/10.22214/ijraset.2023.54596.

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Abstract: Abrasive Hot Air Jet Machining (AHJM) is becoming one of the most prominent machining techniques forPolymethyl Methacrylate (PMMA) and other brittle materials. In this attempt has been made to combine abrasive and hot air to form an abrasive hot air jet. Abrasive hot air jet machining can be connected to different tasks, for example, boring, surface scratching, scoring and small scale completing on the glass and its composites. The impact of air temperature onthe material expulsion rate connected to the procedure of glass carving and scoring is talked about in this article. The unpleasantness of the machined surface is additionally investigated. It is discovered that the material removal rate (MRR) increments as the temperature of transporter media (air) is expanded. In the present work to be attempt to investigate machining characteristics of PMMA material on hot air abrasive jet machining. In hot air abrasive jet machining(HAJM) abrasive particles stay on abrasive particle stay molten by compacted air in a closed chamber and are intensive over the objective surface over a nozzle the stream of particles coming out of the nozzle through very high velocity’s (175-300m/s) impacts the objective surface and eliminates the material by destruction. The investigation has to be carried on to study the effect of process parameters as material removal rate(MRR) as surface roughness(SR) with different input parameters like Air Pressure, , Size Of Abrasives , Stand-Off Distance ,Temperature Of Carrier Gas. In this experimental process Tungstencarbide coated nozzles were to be used flow of silicon carbide(sic) particles will be used.The Poly(methyl methacrylate) (PMMA), furthermore saw as acrylic glass, acrylic material, or plexiglass as suitably as by using the change names Plexiglas, Crylux, Lucite, Acrylate. PMMA it is an unquestionable thermoplastic .the creation formula of PMMA is (C5O2H8)n it has incredible properties to, for instance, lightweight, 92% Transparent observable light effect inside 3mm of thick material, extraordinary solidarity to consider another polystyrene. it's for the most part important in these zones, for instance, Because of its direct properties, lightweight and preferable quality took a gander at over glass, It was broadly usedto make aircraft windshields, shades and weapon turrets. After this couple of different business applications were made for PMMA, for instance, glass material, façade arrangement, publicizing, vehicle headlamps, etc.,

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Sasikumar, KSK, KP Arulshri, K. Ponappa i M. Uthayakumar. "A study on kerf characteristics of hybrid aluminium 7075 metal matrix composites machined using abrasive water jet machining technology". Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 232, nr 4 (16.06.2016): 690–704. http://dx.doi.org/10.1177/0954405416654085.

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Metal matrix composites are difficult to machine in traditional machining methods. Abrasive water jet machining is a state-of-the art technology which enables machining of practically all engineering materials. This article deals with the investigation on optimization of process parameters of abrasive water jet machining of hybrid aluminium 7075 metal matrix composites with 5%, 10% and 15% of TiC and B4C (equal amount of each) reinforcement. The kerf characteristics such as kerf top width, kerf angle and surface roughness were studied against the abrasive water jet machining process parameters, namely, water jet pressure, jet traverse speed and standoff distance. Contribution of these parameters on responses was determined by analysis of variance. Regression models were obtained for kerf characteristics. Contribution of traverse speed was found to be more than other parameters in affecting top kerf width. Water jet pressure influenced more in affecting kerf angle and surface finish. The microstructures of machined surfaces were also analysed by scanning electron microscopy. The scanning electron microscopy investigations exposed the plastic deformation cutting of hybrid 7075 aluminium metal matrix composite. X-ray diffraction analysis results proved the non-entrapment of abrasive particle on the machined surface.

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Polák, Pavel, Ján Žitňanský, Petr Dostál i Katarína Kollárová. "Surface Analysis of Metal Materials After Water Jet Abrasive Machining". Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 63, nr 5 (2015): 1529–33. http://dx.doi.org/10.11118/actaun201563051529.

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In this article, we deal with a progressive production technology using the water jet cutting technology with the addition of abrasives for material removal. This technology is widely used in cutting various shapes, but also for the technology of machining such as turning, milling, drilling and cutting of threads. The aim of this article was to analyse the surface of selected types of metallic materials after abrasive machining, i.e. by assessing the impact of selected machining parameters on the surface roughness of metallic materials.

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Saito, T., S. Ito, Y. Mizukami i O. Horiuchi. "Precision Abrasive Jet Finishing of Cemented Carbide". Key Engineering Materials 291-292 (sierpień 2005): 371–76. http://dx.doi.org/10.4028/www.scientific.net/kem.291-292.371.

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Recently a technique has been developed to mold aspheric glass lenses by using cemented carbide dies at elevated temperature. The dies are precisely ground by an ultraprecision grinding machine. However the obtained form accuracy is generally around 100nm and is not enough high. In this study, to investigate a possibility of corrective figuring of the dies, a series of experiments of abrasive jet machining of cemented carbide was conducted and fundamental machining characteristics were examined. The used abrasives were fine grains of silicon carbide and aluminum oxide. The silicon carbide abrasives could accomplish a sufficient material removal. Both the material removal rate and the surface roughness increase as the collision angle increases up to 90 degrees. Therefore, in order to obtain a smooth surface finish, it was necessary to take a smaller collision angle and to slow down the material removal rate.

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Vinay, Sachin, Sachin Bhanwal i Sahil Yadav. "ABRASIVE JET MACHINING AND OPTIMIZATION OF PROCESS PARAMETERS". International Journal of Advanced Research 9, nr 5 (31.05.2021): 607–16. http://dx.doi.org/10.21474/ijar01/12883.

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Abrasive Jet Machining also known as micro-abrasive blasting or pencil blasting is one of the mechanical energy based economical non-traditional machining process for cutting, deburring, polishing, drilling, etching and cleaning of alloys, brittle metals and non-metallic materials due to its high degree of flexibility and low stress forces with less heat generation.In AJM process, fine abrasive grits (silicon carbides, Aluminium oxides, Sodium bicarbonate, Boron Carbides, Crushed glass and Dolomite etc.) of typically ~0.025 mm are accelerated in a high velocity (150-300 m/s) jet of gas stream or air which is generated by converting pressure energy of carrier gas or air to its Kinetic energy and hence high velocity jet and nozzle directs abrasive jet in a controlled manner towards the work surface. Small fractures are created after impacting abrasive particles on the work surface.

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Pal, Vijay Kumar, i Puneet Tandon. "Effect of Abrasive Flow Rate in Milling with Abrasive Water Jet". Applied Mechanics and Materials 110-116 (październik 2011): 196–201. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.196.

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This Abrasive Water Jet Machining (AWJM) process is usually used to cut the materials which are difficult to cut by conventional machining processes. In this work, controlled depth milling (CDM) is done using AWJM. This work primarily focuses on controlling the abrasive flow rate to reduce the time for machining the component. Here, an experimental setup is made with a modified attachment for abrasive feed system to machine stainless steel. The work also investigates the surface morphology, tolerance on depth of machining and surface waviness for the modified setup. With change in mass flow rate of abrasive, the traverse speed may also be altered and its effects on the machining time are controlled. This work also employs Non-destructive Testing (NDT) method i.e. ultrasonic flaw detector to find out internal defects and cracks in the milled material.

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Wang, Cheng Yong, M. D. Chen, P. X. Yang i Jing Ming Fan. "Hole Machining of Glass by Micro Abrasive Suspension Jets". Key Engineering Materials 389-390 (wrzesień 2008): 381–86. http://dx.doi.org/10.4028/www.scientific.net/kem.389-390.381.

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Abrasive Suspension Jets (ASJ) is a new micro processing technique developed for micro processing of hard and brittle materials based on the traditional Abrasive Water Jet (AWJ). Based on drilling experiments of glass using MASJ technology, the dependence of material removal, the depth and the diameter of the machined holes on the process parameters, such as working pressure, processing time, standoff distance, incidence angle and concentration of abrasives were investigated. Experimental results show that the material removal is approximately proportional to working pressure, processing time and concentration of abrasives, except the standoff distance. It is founded that the processing time is the most remarkable influence factor on the material removal and the depth of the holes. But the working pressure doesn’t show obvious effects to the material removal and the depth of hole with lower pressure in MASJ. The increase of standoff distance will decrease the material removal and depth of hole, and the concentration of abrasives can improve a few of drilling ability. Further, it is founded that longer processing time and smaller standoff distance will achieve higher MASJ drilling efficiency and better quality of hole, with 90 degree jet incidence angle.

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Ramachandran, N., i N. Ramakrishnan. "A review of abrasive jet machining". Journal of Materials Processing Technology 39, nr 1-2 (październik 1993): 21–31. http://dx.doi.org/10.1016/0924-0136(93)90005-q.

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Nesterenko, I. M. "Time calculations for abrasive-jet machining". Chemical and Petroleum Engineering 24, nr 5 (maj 1988): 244–45. http://dx.doi.org/10.1007/bf01174865.

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Meshcheryakov, A. V., i A. P. Shulepov. "Productivity of abrasive water-jet machining". Russian Engineering Research 37, nr 8 (sierpień 2017): 747–50. http://dx.doi.org/10.3103/s1068798x17080111.

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Balasubramanian, M., i S. Madhu. "Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle". Journal of Composite Materials 53, nr 6 (8.08.2018): 819–33. http://dx.doi.org/10.1177/0021998318791340.

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Carbon fibre-reinforced polymer composites are finding increased applications in the field of automotive manufacture and aircraft industries due to their appreciative combination of high strength and low weight. The machining of these composites with economically viable and high part qualities requires enhancement in machining strategies. Delamination and surface roughness are the undesirable geometrical defects inherent in abrasive jet machining of layered polymer composites. This investigation focuses on the mechanism of delamination and surface roughness in abrasive jet machining of carbon fibre-reinforced polymer composite. The paper endeavors at the exploration of the viability of imparting swirling motion to SiC abrasive particles by presenting internal threads in the newly designed nozzle. In this research, a novel threaded nozzle was introduced in the abrasive jet machine for making holes on the carbon fiber-reinforced polymer composites with the objective of reducing the delamination and surface roughness. This is a distinctive attempt of its kind and this has brought down the delamination factor considerably and, as a consequence, surface roughness obtained was minimum. Holes were made on carbon fiber-reinforced polymer composite by abrasive jet machining with a modified nozzle with and without an internal thread. The influence of abrasive jet parameters on the delamination factor (bottom and top) and surface roughness (Ra) was investigated. Maximum pressure and minimum SOD cause decrease in delamination and surface roughness in carbon fiber-reinforced polymer composite composites.

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Wang, Yong, Hong Tao Zhu, Chuan Zhen Huang, Jun Wang, Peng Yao i Zhong Wei Zhang. "A Study on Erosion of Alumina Wafer in Abrasive Water Jet Machining". Advanced Materials Research 1017 (wrzesień 2014): 228–33. http://dx.doi.org/10.4028/www.scientific.net/amr.1017.228.

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Abrasive water jet machining is considered as a promising technique in hard and brittle material processing. This paper studies the erosion performance of the alumina ceramics in the different process parameters. In the erosion experiments, alumina ceramics wafers were eroded by the abrasive waterjet machining. The single factor experiments were carried out to understand the effect of different process parameters (jet impact angle, standoff distance, water pressure, abrasive particle diameter) on the material removal rate (MRR), the removal depth and surface roughness (Ra). The experimental results can provide guidance for alumina ceramics abrasive water jet cutting and polishing.

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GOK, KADIR. "INVESTIGATION USING FINITE ELEMENT ANALYSIS OF EFFECT ON CRATER GEOMETRY OF DIFFERENT ABRASIVE TYPES IN ABRASIVE WATER JET MACHINING". Surface Review and Letters 28, nr 07 (28.04.2021): 2150060. http://dx.doi.org/10.1142/s0218625x21500608.

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Today, manufacturing methods are classified into two groups as conventional and non- conventional manufacturing methods. While turning, milling, and drilling are among the conventional manufacturing methods, processes such as laser, plasma, electro erosion, ultrasonic machining and water jet machining are among non-conventional, namely modern manufacturing methods. The cutting tool does not used in modern manufacturing methods. This situation is an advantage. There are some uncertainties on the machining performance of abrasive types, apart from the superior properties of the method. In this study, the effect of different abrasive types on machining performance in abrasive water jet machining (AWJM) was investigated by using computer aided finite element analysis.

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M.C., Kalai selvan, Hendry Thomas X, Siddharthan B i Divya Kumar P. "Mach inability Studies on Metal Matrix Composite’s Using Abrasive Water Jet Machining". Bulletin of Scientific Research 1, nr 1 (30.05.2019): 24–33. http://dx.doi.org/10.34256/bsr1914.

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The non-traditional machining of particulate reinforced metal matrix composites is relatively new. This paper covers studies on match inability of aluminium - Boron carbide metal matrix composites (Al-B4C MMCs) with abrasive water jets (AWJs). Two different compositions of Al-B4C MMCs were processed with various mesh size, abrasive flow rate, transverse rate and water pressure with a view to identify the performance of the abrasive water jet machine for effective processing of MMCs with AWJs. The maximum penetration ability of AWJs in different MMCs was examined by conducting the experiments on trapezoidal shaped Al-B4C MMC specimens, prepared with stir casting method. Optical micrographs of MMC samples and scanning electron microscopic (SEM) examination of AWJ cut surfaces enabled to explain the trends of material removal by the abrasives. Analysis of results clearly indicated the choice of 80 mesh size abrasives, higher water pressure and flow rate and lower transverse rate for effective processing of Al-B4C MMCs with AWJs.

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Fan, Jing Ming, Chang Ming Fan i Jun Wang. "Modeling the Material Removal Rate in Micro Abrasive Water Jet Machining of Glasses". Advanced Materials Research 135 (październik 2010): 370–75. http://dx.doi.org/10.4028/www.scientific.net/amr.135.370.

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Micro abrasive water jet (MAWJ) machining is a new promising micro machining technology for brittle material. The rate of material removal is one of the most important parameter for abrasive processes. Predictive mathematical model for the material removal rate is presented for micro channel machining by micro abrasive water jet (MAWJ). A dimensional analysis technique is used to formulate the model. The validity and predictive capability of the models are assessed and verified by an experimental investigation when machining glasses. It shows that the predictions of the models are in good agreement with the experimental data.

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Huang, Chuan Zhen, Jun Wang, Yan Xia Feng i Hong Tao Zhu. "Recent Development of Abrasive Water Jet Machining Technology". Key Engineering Materials 315-316 (lipiec 2006): 396–400. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.396.

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Abrasive waterjet (AWJ) machining is a new non-conventional machining technology. Compared with other conventional and non-conventional machining technologies, AWJ offers the following advantages: no thermal distortion, small machining force, high machining versatility, etc. Therefore this technology is regarded as a high potential technology in the field of machining difficult-to-cut materials. In this paper, a comprehensive review of research situation about the cutting performance, the cutting mechanism and the measures to improve the cutting quality is given. The application of abrasive waterjet machining in turning, milling and drilling is reviewed finally.

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Kantha Babu, M., i O. V. Krishnaiah Chetty. "Studies on Recharging of Abrasives in Abrasive Water Jet Machining". International Journal of Advanced Manufacturing Technology 19, nr 9 (15.05.2002): 697–703. http://dx.doi.org/10.1007/s001700200115.

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Behera, Ranjit Kumar, i Sudhansu Ranjan Das. "Modelling and optimization of technological parameters in hot abrasive jet machining of alumina ceramic". Matériaux & Techniques 107, nr 6 (2019): 603. http://dx.doi.org/10.1051/mattech/2020008.

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The present work focuses on the experimental investigation of hot abrasive jet machining (HAJM) and precision drilling operation on flat surfaces of K-60 alumina ceramic material using different grades of silicon carbide abrasives. The machining AJM setup is designed based on fluidized bed mixing chamber along with pressurized powder feed chamber. The experiments are performed as per Box-Behnken design of experiments (BBDOEs) with four process parameters (pressure, stand of distance, abrasive temperature and grain size) for parametric optimization in order to control the two technological response characteristics (material removal rate, flaring diameter) of the precision holes on K-60 alumina. Analysis of variance (ANOVA), response surface methodology (RSM) and genetic algorithm (GA) are subsequently proposed for predictive modelling and process optimization. Result shows that application of hot abrasives in AJM process has excellent performance in terms of improved material removal rate, and minimum dimensional deviation of drilled hole. Multi-response optimization GA technique presented the optimal setting of machining variables in HAJM process at air pressure of 6.682 kgf/cm2, abrasive temperature of 60.6 °C, stand-off-distance of 7.1124 mm, abrasive grain size of 275.755 µm, with estimated maximal material removal rate of 0.005 gm/s and minimal flaring diameter of 6.382 mm. The methodology described here is expected to be highly beneficial to manufacturing industries.

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Liu, Zeng Wen, Chuan Zhen Huang, H. T. Zhu, H. L. Liu i B. Zou. "Study on Jet Formation and Modeling for High Pressure Abrasive Water-Jet". Key Engineering Materials 487 (lipiec 2011): 468–72. http://dx.doi.org/10.4028/www.scientific.net/kem.487.468.

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High pressure abrasive water jet (HPAWJ) machining has many advantages in hard brittle material processing. In this paper, the hole formation on stone by HPAWJ is analyzed based on brittle and plastic fracture theories. The formation and construction of jet are studied. The distribution of jet velocity, abrasives and energy in the jet-beam section of HPAWJ is analyzed. It is shown that the cross-section of the hole is characterized by a ‘Reverse-bell’ shape on stones by a HPAWJ. The jet velocity of HPAWJ gets lower from jet center to jet margin and it’s distribution is consistent with normal distribution function along with jet center. The concentration of abrasives becomes smaller from jet margin to jet center and it’s distribution is consistent with normal distribution function along with jet margin. The distribution of jet velocity, abrasives and energy in the section of HPAWJ is modeled.

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Ahmed, Usman, i Dr Hassan Farid Khan. "Literature Review on Abrasive Jet Machining - Past and Present". Scandic Journal Of Advanced Research And Reviews 3, nr 2 (20.10.2022): 074–86. http://dx.doi.org/10.55966/sjarr.2022.3.2.0053.

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Abrasive jet machining is very simple and low cost technique in which different materials (hard, brittle, etc.) will be machined. This is low budget and very effective conventional machining process. It has many advantages like high machining versatility, less stress on specimen, high machining process flexibility, no heat distortion during the process and low cutting forces on edges as compared to the other non-conventional technologies. This review paper give insight of AJM from beginning to current status as well as latest development in abrasive jet machining process

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Sankar, V., R. Arravind i D. Manikandan. "Material synthesis, characterization, and machining performance of stir cast beryllium copper alloy composites". Transactions of the Canadian Society for Mechanical Engineering 43, nr 2 (1.06.2019): 143–52. http://dx.doi.org/10.1139/tcsme-2018-0103.

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Copper alloys have important industrial roles due to their excellent properties. Beryllium copper is one of the copper-based alloys with the highest strength and excellent metal working and machining properties. Beryllium copper alloy composite is fabricated by the stir casting method. Its characteristics are studied with scanning electron microscopy and energy dispersive analysis of X-rays. The material properties of the stir cast beryllium copper alloy composites are evaluated. Hardness can be increased by the addition of silicon carbide particles. Abrasive water jet machining is an effective unconventional machining process, in which high pressure water jet and abrasive particles are used to remove material. Response parameters such as material removal rate and circularity of holes are considered. Response parameters of abrasive water jet machining are compared to electrical discharge machining. The most influential factor for the responses is determined by analysis of variance. Optimization of machining parameters is performed with the Taguchi method.

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Wang, Tao, Rongguo Hou i Zhe Lv. "Experimental Investigation on the Material Removal of the Ultrasonic Vibration Assisted Abrasive Water Jet Machining Ceramics". Advances in Materials Science and Engineering 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/1365786.

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The ultrasonic vibration activated in the abrasive water jet nozzle is used to enhance the capability of the abrasive water jet machinery. The experiment devices of the ultrasonic vibration assisted abrasive water jet are established; they are composed of the ultrasonic vibration producing device, the abrasive supplying device, the abrasive water jet nozzle, the water jet intensifier pump, and so on. And the effect of process parameters such as the vibration amplitude, the system working pressure, the stand-off, and the abrasive diameter on the ceramics material removal is studied. The experimental result indicates that the depth and the volume removal are increased when the ultrasonic vibration is added on abrasive water jet. With the increase of vibration amplitude, the depth and the volume of material removal are also increased. The other parameters of the ultrasonic vibration assisted abrasive water jet also have an important role in the improvement of ceramic material erosion efficiency.

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Hynes, N. R. J., A. D. Asirvatham, S. Raja, B. Benita i J. Atchaya. "Investigation on surface roughness and kerf analysis in abrasive water jet machining of silicon carbide". Archives of Materials Science and Engineering 120, nr 1 (1.03.2023): 30–35. http://dx.doi.org/10.5604/01.3001.0053.6017.

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Machining silicon carbide (SiC) is challenging due to its brittle and maximum tensile nature. Lapping or laser beam are done with a high cost of manufacturing and low material removal rates. Water abrasive jet cutting is a promising candidate since the machining temperatures and processing force of ceramics are extremely low. Investigation into the abrasive water jet machining of silicon carbide is carried out in the present work.The variations in traverse speed while abrasive water jet cutting of silicon carbide and its effect on the surface roughness and kerf characteristics are studied. Silicon Carbide abrasive material is used as garnet consisting of 80 mesh. The surface roughness was calculated along with the depth of the cut made during the processing.The outcomes demonstrated that the traverse speed is more effective upon the surface roughness and is an important factor that damages the top kerf width and the kerf taper angle.Based on the hardness and thickness of the SiC plate, the taper angle is high, and for a feed rate of 10 mm/min, the surface roughness is low. Less thickness of the SiC plate could have a lower taper angle than with high thickness. The erosive force is provided by abrasive material along with the jet stream.Water abrasive fine jet could effectively machinate silicon carbide ceramic material with a better surface finish accurately. Suitable surface roughness with higher productivity can be attained with medium traverse speed.The effect of process parameters on kerf taper angle and top kerf width in the abrasive water jet machining of silicon carbide is explored, considering surface roughness as an important output parameter.

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Fan, Jing Ming, i Jun Wang. "A Visualization Study of Abrasive Flow Variation in Abrasive Air Jets". Advanced Materials Research 652-654 (styczeń 2013): 2123–28. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.2123.

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Abrasive jet machining is an efficient technology for the fabrication of three dimensional micro structures on brittle materials. In abrasive jet machining, the variation or fluctuation in the amount of abrasive supply has a significant effect on the quality of the machined structures. An image processing technique is employed in this study to study the abrasive flow rate variation, in which abrasive jet pictures are captured at different moments by a Particle Image Velocimetry technology and then processed using Labview Vision Assistant and MATLAB. It shows that the abrasive flow rate fluctuates with time under the jetting conditions considered. The abrasive flow from larger nozzles or at smaller air pressures shows more profound fluctuation. Although the abrasive flow fluctuation from smaller nozzles remains almost constant when the air pressure is changed, for larger nozzles, the magnitude of the fluctuation gradually decreases as the air pressure is increased.

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Gembalová, Lucie, Libor M. Hlaváč, Sławomir Spadło, Vladan Geryk i Luka Oros. "Notes on the Abrasive Water Jet (AWJ) Machining". Materials 14, nr 22 (19.11.2021): 7032. http://dx.doi.org/10.3390/ma14227032.

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The aim of the research was to investigate changes of abrasive grains on metals observing the kerf walls produced by the Abrasive Water Jet (AWJ). The microscopy observations of the sidewalls of kerfs cut by the AWJ in several metal materials with an identical thickness of 10 mm are presented. The observed sizes of abrasive grains were compared with the results of research aimed at the disintegration of the abrasive grains during the mixing process in the cutting head during the injection AWJ creation. Some correlations were discovered and verified. The kerf walls observations show the size of material disintegration caused by the individual abrasive grains and also indicate the size of these grains. One part of this short communication is devoted to a critical look at some of the conclusions of the older published studies, namely regarding the correlation of the number of interacting particles with the acoustic emissions measured on cut materials. The discussion is aimed at the abrasive grain size after the mixing process and changes of this size in the interaction with the target material.

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Varia, Manthan N. "Mathematical Modelling and Experimental Investigation of Abrasive Jet Machining for Various Abrasive Particles". International Journal for Research in Applied Science and Engineering Technology 9, nr 11 (30.11.2021): 979–91. http://dx.doi.org/10.22214/ijraset.2021.38952.

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Abstract: Abrasive water-jet machining operates by the impingements of a high velocity abrasive laden water-jet against the work piece. The jet is formed by mixing abrasive particles with high-velocity water in the mixing region and is forced through the orifice. The accelerated jet exiting the nozzle travels at a very high velocity and cuts as it passes through the work piece. It is a difficult task of predicting the values of major cutting performance measures in Abrasive Water Jet (AWJ) cutting. AWJ cutting process involves a large number of process and material parameters, which are related to the water-jet, the abrasive particles, and work-piece material. Those parameters are expected to affect the material removal rates and depth of penetration. In this paper, various models of wear by particle erosion and the most accepted models for predicting the depth of penetration in AWJ cutting are reviewed. However, there has been very little reported study on AWJ machining using various abrasive particles. In this paper, an attempt has been made for the development of the predictive mathematical model for AWJ cutting with various abrasive particles having different geometrical shapes and physical properties. Also, their effect on the target material has also been studied. Afterward, this model is verified with the experimental investigation. Keywords: AWJM, Abrasive, Mathematical-Modelling, Manufacturing, Water-Jet

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Gour, Ritesh. "A Review Article on Abrasive Jet Machining". International Journal for Research in Applied Science and Engineering Technology 10, nr 6 (30.06.2022): 2153–57. http://dx.doi.org/10.22214/ijraset.2022.44159.

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Abstract: Abrasive jet machining (AJM) is that the methodology of removing material from a piece piece by the applying of high speed stream of abrasive particles suspended in Associate in Nursing passing gas medium from a nozzle. the material removal methodology is very caused by brittle fracture by impingement and by erosion. AJM has varied distinct edges over the non-ancient cutting technologies like high machining state, no thermal distortion, minimum stresses on the work piece and by very little cutting forces. This paper presents Associate in Nursing precise summary of this state of analysis and development within the abrasive jet machining method any challenges and scope of future development in AJM are projected.

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Hou, Ya Li, Chang He Li i Yu Cheng Ding. "Modeling and Predicting Roughness of the Abrasive Jet Finishing with Grinding Wheel as Restraint". Applied Mechanics and Materials 44-47 (grudzień 2010): 975–79. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.975.

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Based on the modeling and experiments concerning the surface roughness in abrasive jet finishing with grinding wheel as restraint, the effect of abrasive size, abrasive fluid concentration, machining cycles, wheel velocity and carrier fluid on machined surface quality was investigated. Surface grinder M7120 was employed in a jet machining experiment conducted with W18Cr4V and 40Cr materials, profilometer TALYSURF was used to measure the micro geometrical parameters after machining, and SEM was used to observe surface micro-morphology. Experimental results show that with W7 Al2O3 powder at the mass fraction of 10% and antirust lubricating liquid being adopted in jet machining for 20 to 30 cycles, not only high surface shape precision can be kept or obtained, but also defect-free machined surface with the roughness of Ra0.15～1.6µm can be obtained with high efficiency. Experimental observation and experimental results proved that the experimental results agree well with a mechanism-based machining model.

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Li, Chang He, Zhan Rui Liu i Guang Qi Cai. "Theoretical Modeling and Experimental Verification of Surface Roughness in Abrasive Jet Finishing". Applied Mechanics and Materials 16-19 (październik 2009): 450–55. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.450.

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Based on the modeling and experiments concerning the surface roughness in abrasive jet finishing with grinding wheel as restraint, the effect of abrasive size, abrasive fluid concentration, machining cycle, wheel velocity and carrier fluid on machined surface quality was investigated. Surface grinder M7120 was employed in a jet machining experiment conducted with W18Cr4V and 40Cr materials, profilometer TALYSURF was used to measure the micro geometrical parameters after machining, and SEM was used to observe surface micro-morphology. Experimental results show that with W7 Al2O3 powder at the mass fraction of 10% and antirust lubricating liquid being adopted in jet machining for 20 to 30 cycles, not only high surface shape precision can be kept or obtained, but also defect-free machined surface with the roughness of Ra0.15～1.6µm can be obtained with high efficiency. Experimental observation and experimental results proved that the experimental results agree well with a mechanism-based machining model.

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Ali, Hussein M., Asif Iqbal i Majid Hashemipour. "Experimental Analysis of Hole Making in GFRP Composite Using Abrasive Water Jet Cutting Technology". Applied Mechanics and Materials 325-326 (czerwiec 2013): 1392–98. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.1392.

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Machining of composite materials for the production of bolt holes is essential in the assembly of the structural frames of many industrial applications of GFRP. Abrasive water jet cutting technology has been used in industry for such purposes. This technology has procured many overlapping applications and as the life of the joint in the assemble structure can be critically affected by the quality of the holes, it is thus important for the industry to understand the application of abrasive water jet cutting process on GFRP composite materials. The aim of the present work is to to assess the influence of abrasive water jet machining parameters on hole making process of woven laminated GFRP material. Statistical approach was used to understand the effects of the predicted variables on the response variables. Analysis of variance (ANOVA) was performed to isolate the effects of the parameters affecting the hole making in abrasive water jet. The result shows that cutting feed, water jet pressure, standoff distance and abrasive flow rate are influential parameters upon the response variables of the abrasive water jet cutting process of GFRP composite, type 3240.

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Mohd Ali, Afifah, Ahsan Ali Khan i Mohammad Yeakub Ali. "Effect of Process Parameters on Abrasive Contamination during Water Abrasive Jet Machining of Mild Steel". Advanced Materials Research 264-265 (czerwiec 2011): 1015–20. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1015.

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In the area of grit blasting, it is well known that microscopically small abrasive debris gets trapped on the surface, and due to impact the grits might cause the surface to fracture and a fraction of it to be embedded. The same problem appears in abrasive water jet (AWJ) machining especially in the so-called deformation wear zone or striation zone. The major aim in this study is to investigate the abrasive contamination on mild steel cutting surface. In the present study mild steel was used as the work material, since it is widely used in many industries. In order to analyze the pattern of the contaminations on the cut surface, the selected process parameters were abrasive flow rate, pressure and work feed rate. Abrasive contamination was measured at different depths along the path of the abrasives. The three selected zones for measuring abrasive contamination at different depths were the primary impact zone, the smoother zone and the deformation wear zone. It was found that contamination at the middle zone, i.e., the smoother zone had the least abrasive contamination while the initial impact zone and the deformation wear zone showed high abrasive contamination. It was also found that a higher pressure reduces abrasive contamination while a higher abrasive flow rate and work feed rate increase abrasive contamination.

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Hashish, M. "Comparative Evaluation of Abrasive Liquid Jet Machining Systems". Journal of Engineering for Industry 115, nr 1 (1.02.1993): 44–50. http://dx.doi.org/10.1115/1.2901637.

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This paper presents a comparison between two types of abrasive liquid jet cutting systems: entrainment systems, which typically use abrasive-waterjets (AWJs) to perform the cutting; and systems that use directly pumped abrasive slurry jets (ASJs) to perform the cutting. The hardware features and the performance characteristics of the two types of systems are addressed. A simplified analysis indicates that at an abrasive-to-liquid ratio of 1:1, high-pressure directly pumped ASJs are twice as efficient as entrainment AWJs in transferring energy to the particles. Also, directly pumped ASJs are potentially over 20 times as dense with regard to kinetic power delivery to the workpiece. However, high-pressure entrainment AWJs can be more effective than low-pressure directly pumped ASJs.

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Lin, Yan-Cherng, Jung-Chou Hung, Hsin-Min Lee, A.-Cheng Wang i Shih-Feng Fan. "Machining Performances of Electrical Discharge Machining Combined with Abrasive Jet Machining". Procedia CIRP 68 (2018): 162–67. http://dx.doi.org/10.1016/j.procir.2017.12.040.

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Panda, Anton, Marek Prislupčák, Jozef Jurko, Iveta Pandová i Peter Orendáč. "Vibration and Experimental Comparison of Machining Process". Key Engineering Materials 669 (październik 2015): 179–86. http://dx.doi.org/10.4028/www.scientific.net/kem.669.179.

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Abrasive water jet technology is among the unconventional ways of machining. In today's modern and progressive era is often used for cutting and machining of various types of materials because of lower costs and environmental impact, as the cutting tool is water, in our case, with the addition of abrasives. Objective of the measurements was to evaluate the impact of vibration on the technological head in abrasive water jet technology in changing the selected technological parameters and the flow rate of technological head. In the given experiment, the used material - steel Hardox 500 with a thickness of 10 mm. The effort was to investigate the effects of changes in the speed rate of technological head (by speeds - 40, 200, 400 mm / min) on the size of the vibration acceleration amplitude and its frequency. Based on the measured values of vibration to the technological head create the database and from it is evaluated the data in selected softwares (LabVIEW, SignalExpress and Microsoft Excel). Findings and conclusions are formulated on the basis of graphical dependencies, envelopes frequency spectra and comparison chart of envelopes.

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