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Journal articles on the topic 'Magnetic abrasive powder'

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Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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1

Patil, Mahadev Gouda, Kamlesh Chandra, and P. S. Misra. "Study of Magnetic Abrasive Finishing Using Mechanically Alloyed Magnetic Abrasives." Advanced Materials Research 585 (November 2012): 517–21. http://dx.doi.org/10.4028/www.scientific.net/amr.585.517.

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The finishing characteristics of mechanically alloyed magnetic abrasives used in cylindrical magnetic abrasive finishing (MAF) are presented in this study. Mechanical alloying is a solid state powder processing technique, where the powder particles are subjected to impact by the balls in a high energy ball mill or attritor at room temperature. After the process, fine magnetic abrasives are obtained in which the abrasive particles are attached to the base metal matrix without any bonding material. The magnetic particle used in the magnetic abrasive production is iron powder and the abrasive is aluminium oxide. Magnetic abrasives play the role of cutting tools in MAF, which is emerging as an important non-conventional machining process. The experiments performed on stainless steel tubes examine the effects of varying the quantity of magnetic abrasives, magnetic flux density, speed of rotation of the workpiece and amount of lubricant. The surface roughness measurements demonstrate the effects of the abrasive behaviour on the surface modification. The surface roughness was analysed in terms of percentage improvement in surface finish (PISF). The obtained maximum PISF was 40 % and the minimum surface roughness was 0.63 μm Ra.
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2

Hanada, Kotaro, and Hitomi Yamaguchi. "Development of Spherical Iron-Based Composite Powder with Carried Alumina Abrasive Grains by Plasma Spray." Advanced Materials Research 75 (June 2009): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amr.75.43.

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This paper describes the development of spherical iron-based composite powder with carried alumina abrasive grains made by a plasma spray technique. Carbonyl iron powder (7.2 μm average size) and alumina abrasive grains (0.3 μm average size) are sprayed into the plasma flame from the respective nozzles simultaneously, or their mechanical mixture is directly plasma-sprayed. In case of the composite powder obtained by the direct spray method, the alumina abrasives are well carried on the carbonyl iron particles. However, a plasma current of more than 100 A causes melting and vaporizing of the alumina abrasives;, consequently the carbonyl iron and alumina abrasives are separated. The magnetic abrasive experiments with the composite powder developed are made for SUS304 stainless steel plate, and the result shows that the developed composite powder has high potential abrasive performance.
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3

Singh, Palwinder, Lakhvir Singh, and Sehijpal Singh. "Finishing of Tubes using Bonded Magnetic Abrasive Powder in an Abrasive Medium." Powder Metallurgy Progress 20, no. 1 (June 1, 2020): 1–11. http://dx.doi.org/10.2478/pmp-2020-0001.

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Abstract Magnetic abrasive flow finishing (MAFF) is an unconventional process capable of producing fine finishing with machining forces controlled by a magnetic field. This process can be utilized for hard to achieve inner surfaces through the activity of extrusion pressure, combined with abrasion activity of a magnetic abrasive powder (MAP) in a polymeric medium. MAP is the key component in securing systematic removal of material and a decent surface finish in MAFF. The research background disclosed various methods such as sintering, adhesive based, mechanical alloying, plasma based, chemical, etc. for the production of bonded MAP. This investigation proposes bonded MAP produced by mechanical alloying followed by heat treatment. The experiments have been conducted on aluminum tubes to investigate the influence of different parameters like magnetic field density, extrusion pressure and number of working cycles. The bonded magnetic abrasive powder used in MAFF is very effective to finish tubes’ inner surfaces and finishing is significantly improved after processing.
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4

Baron, Yuri M., S. L. Ko, and Jung Il Park. "Characterization of the Magnetic Abrasive Finishing Method and Its Application to Deburring." Key Engineering Materials 291-292 (August 2005): 291–96. http://dx.doi.org/10.4028/www.scientific.net/kem.291-292.291.

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This paper analyzes the effectiveness of using Magnetic Abrasive Finishing (MAF) to remove burrs on drilled holes located on planes. Basic elements of the equipment in this method are a magnetic inductor; powder with magnetic and abrasive properties, which serves as the cutting tool; and the face electromagnetic inductor and the vibrating table, which were developed for deburring and finishing on flat surfaces. The performance of magnetic abrasive powders produced by industry is also evaluated. A new technique was developed to compare the performance of the magnetic abrasive powders and to find the powder that is appropriate for finishing and deburring drilled holes placed on a plane steel surface.
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5

Yin, Cheng, Lida Heng, Jeong Kim, Min Kim, and Sang Mun. "Development of a New Ecological Magnetic Abrasive Tool for Finishing Bio-Wire Material." Materials 12, no. 5 (March 1, 2019): 714. http://dx.doi.org/10.3390/ma12050714.

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This study proposes a new wire magnetic abrasive finishing (WMAF) process for finishing 316L SUS wire using ecological magnetic abrasive tools. 316L SUS wire is a biomaterial that is generally used in medical applications (e.g., coronary stent, orthodontics, and implantation). In medical applications of this material, a smooth surface is commonly required. Therefore, a new WMAF process using ecological magnetic abrasive tools was developed to improve the surface quality and physical properties of this biomaterial. In this study, the WMAF process of 316L SUS wire is separated into two finishing processes: (i) WMAF with ecological magnetic abrasive tools, and (ii) WMAF with industrial magnetic abrasive tools. The ecological magnetic abrasive tools consist of cuttlefish bone abrasives, olive oil, electrolytic iron powder, and diamond abrasive paste. The finishing characteristics of the two types of abrasive tools were also explored for different input parameters (i.e., vibrating magnetic field and rotating magnetic field). The results show that ecological magnetic abrasive tools can improve the initial surface roughness of 316L SUS wire from 0.23 µm to 0.06 µm. It can be concluded that ecological magnetic abrasive tools can replace industrial magnetic abrasive tools.
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6

Zhao, Zeng Dian, Yu Hong Huang, and Yu Gang Zhao. "Preparation of Magnetic Abrasive by Sintering Method." Advanced Materials Research 135 (October 2010): 382–87. http://dx.doi.org/10.4028/www.scientific.net/amr.135.382.

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In this paper, ferrosilicon powder was used as the ferromagnetic phase, corundum powder as the abrasive phase, high temperature inorganic binder as the adhesive, and after the ferrosilicon powder was modified, a series of magnetic abrasive was obtained by sintering method. Scanning electron microscope (SEM) and Energy dispersive spectrometer (EDS) were respectively used to characterize the morphology and elemental composition of magnetic abrasive. and through experiments carried out on the magnetic abrasive grinding performance testing and durability analysis. The experimental results showed that the magnetic abrasive prepared had good polishing ability and longer using time, and the surface roughness of the grinding sample can reach 0.12μm and the using time is up to 25 min.
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7

Bansal, Ankit, Ravi Butola, M. S. Niranjan, Qasim Murtaza, and Umang Soni. "Synthesis and Characterization of Sintered Magnetic Abrasives Used in Advance Finishing Processes Through Powder Metallurgy Route." INTERNATIONAL JOURNAL OF ADVANCED PRODUCTION AND INDUSTRIAL ENGINEERING 5, no. 3 (July 5, 2020): 27–33. http://dx.doi.org/10.35121/ijapie202007345.

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The magnetic field-assisted surface finishing process needs a sintered magnetic abrasive powder which could be a mixture of SiC and CIP particles. Tube furnaces have been used to develop SiC-based sintered magnetic abrasives. The focus of this article is to investigate the anticipated results and to carry out the fabrication setup of sintered magnetic abrasive for the super-finishing of composite materials and their coating. The article depicts a significant effect on the mechanical properties such as microhardness and compressive strength and analyzes SiC and CIP composite-based microstructure. The synthesis of the powder involves four major processes like blending; compaction and sintering. Characterization of sintered magnetic abrasives has been done using SEM, EDS, XRD to study morphology, chemical composition, crystallography, and magnetic properties. The results have been compared with the un-bonded magnetic abrasives. This paper also presents a brief literature review of the state-of-the-art technology of high-performance surface finishing processes used in manufacturing industries. Finally, the downside and stray aspects of the related literature are spotlighted and a list of prospective issues for future research directions is recommended.
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8

Krymskii, M. D. "Magnetic properties of a powder magnetic-abrasive tool." Powder Metallurgy and Metal Ceramics 33, no. 1-2 (1995): 33–36. http://dx.doi.org/10.1007/bf00559704.

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9

Jo, S. R., S. L. Ko, and Yuri M. Baron. "Effective Deburring of the Burr at Intersecting Hole by Permanent Magnet Inductor." Advanced Materials Research 24-25 (September 2007): 29–38. http://dx.doi.org/10.4028/www.scientific.net/amr.24-25.29.

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The sharp burrs produced by plastic deformation during machining of the precision components deteriorates the precision and performance of a machine. Thus, effective removal of the burrs may improve productivity and performance of the machinery. This study was conducted based on the experiment to remove fine burrs produced during machining process using the magnetic abrasive finishing method. The magnetic abrasive finishing using the abrasive feature of an abrasive and the magnetic nature of iron is an abrasive method to brush the burrs with iron powder that has a cohesive power due to the line of induction. The purpose of this study is to remove the burrs at intersecting holes which are difficult to access with tools, using the magnetic abrasive finishing method. Special tool is designed for deburring micro burr at intersecting holes. To find the proper deburring condition, gap distance, rotational speed of inductor, components of powder and effect of coolant are analyzed.
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10

Tatarkin, Evgeniy, Aleksey Ikonnikov, Tatyana Schrayner, and Roman Grebenkov. "Modeling of the Magnetic Abrasive Machining Process of Flat Surface Workpieces on Numerically Controlled Machine Tools." Applied Mechanics and Materials 788 (August 2015): 69–74. http://dx.doi.org/10.4028/www.scientific.net/amm.788.69.

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The article describes a mathematical model of the circular motion trajectory of a magnetic abrasive powder portion which participates in the magnetic abrasive machining process of flat surface workpieces. The motion trajectory of a magnetic abrasive powder portion is observed. The main formulas, assumptions and recommendations on the implementation of the mathematical model are introduced. Taking into account the feed rate of the machine table, rotational speed and the radius of the cylindrical magnetic inductor, the model allows determining an optimal amount of the magnetic abrasive powder portion which can provide the required efficiency of the finishing process. The magnetic abrasive machining process does not have any fixed standard cutting parameters, so they have to be readjusted every time. The given model can be used to predict the parameters of the finishing process of sophisticated flat surface workpieces.
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11

Zhao, Zeng Dian, Yu Hong Huang, Yu Gang Zhao, and Xian Jin Yu. "Research on Preparation and Properties of Magnetic Abrasive by Conventional Solid-State Method." Key Engineering Materials 416 (September 2009): 553–57. http://dx.doi.org/10.4028/www.scientific.net/kem.416.553.

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The silicon-coated iron powder was evenly mixed with corundum powder and high temperature binder. After tabletting and sintering, followed by crushing and screening, the magnetic abrasive with a certain size was obtained. Scanning electron microscope (SEM), Energy dispersive spectrometer (EDS) and X-ray diffraction (XRD) were respectively used to characterize the morphology, elemental composition and the crystalloid structures of magnetic abrasive. The ferromagnetic phase and abrasive phase were combined firmly. The magnetic abrasive prepared showed a good grinding ability, whose durable time was up to 24 min. Irregular particles was obtained by smashing the magnetic abrasive, mainly composed of Al2O3, Fe2O3, α-Fe, AlFeO3, (Al, Fe)7BO3(SiO4)3O3.
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12

Panteleenko, F., G. Petrishin, and E. Panteleenko. "Magnetic-abrasive finishing with new diffusion-alloyed materials based on dispersed metal waste." Journal of Physics: Conference Series 2131, no. 4 (December 1, 2021): 042017. http://dx.doi.org/10.1088/1742-6596/2131/4/042017.

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Abstract The article discusses the issues of assessing the effectiveness of the use of new diffusion-alloyed ferromagnetic abrasive materials in the technology of magnetic abrasive finishing. The productivity of processing and the roughness of the processed surface were evaluated as they are considered to be the main performance criteria of ferric-abrasive powders (FAP). There were researched three types of powders: common Fe-TiC powder, obtained by the sintering (as a reference), and two new diffusion alloyed (borated and nitrocarburized) FAP, made of low-carbon finely dispersed ferrum-based wastes. Both new proposed diffusion-alloyed powders have better cutting characteristics then reference powder, explained by the structure features and their properties. Evaluation of productivity and roughness of surface shows, that there is their direct dependence of morphology, hardness and fragility of powder particles. The best cutting characteristics has borated powders, as they have microhardness 18,000-20,000 MPa and the tendency to brittle fracture, that leads to the new less-sized particles with sharp cutting edges creation.
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13

Gao, Yuewu, Yugang Zhao, Guixiang Zhang, Fengshi Yin, and Haiyun Zhang. "Modeling of material removal in magnetic abrasive finishing process with spherical magnetic abrasive powder." International Journal of Mechanical Sciences 177 (July 2020): 105601. http://dx.doi.org/10.1016/j.ijmecsci.2020.105601.

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14

Singh, Palwinder, Lakhvir Singh, and Sehijpal Singh. "Preparation, Microstructure Evaluation and Performance Analysis of Diamond-Iron Bonded Magnetic Abrasive Powder." Powder Metallurgy Progress 19, no. 2 (December 1, 2019): 82–89. http://dx.doi.org/10.1515/pmp-2019-0008.

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AbstractThe customary edged tool for machining is uneconomical for harder and hard to machine materials and furthermore the level of surface finish accomplished is not that great. As of late, a lot of consideration in mechanical engineering has been centered on finishing tasks. Not many investigations have been accounted for till date on the advancement of substitute magnetic abrasive powder (MAP). In this paper, to improve the finishing performance, the abrasive powder were prepared by mechanical alloying of diamond powder and iron (Fe) powder, compacting these with universal testing machine (UTM) and then sintered at different temperature in a sintering machine in an inert gas (H2) atmosphere. These compacts were crushed and sieved to obtain various sizes of MAP. This abrasive powder were micro-structurally examined. The results indicate that the densification increases and porosity decreases with increasing temperature. Moreover, the prepared bonded MAP has potential performance as a new MAP for fine finishing in Magnetic Abrasive Flow Machining (MAFM) process.
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15

Park, Sung Jun, and Sang Jo Lee. "Fabrication of the Fine Magnetic Abrasives by Using Mechanical Alloying Process and its Polishing Characteristics." Key Engineering Materials 326-328 (December 2006): 421–24. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.421.

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A new method to fabricate the fine magnetic abrasives by using mechanical alloying is proposed. The mechanical alloying process is a solid powder process where the powder particles are subjected to high energetic impact by the balls in a vial. As the powder particles in the vial are continuously impacted by the balls, cold welding between particles and fracturing of the particles take place repeatedly during the ball milling process using a planetary mill. After the manufacturing process, fine magnetic abrasives which the guest abrasive particles clung to the base metal matrix without bonding material can be obtained. The shape of the newly fabricated fine magnetic abrasives was investigated using SEM and its polishing performance was verified by experiment. It is very helpful to finishing the micro structures such as injection mold and MEMS applications in final polishing stage. The areal rms surface roughness of the workpiece after several polishing processes has decreased to a few nanometer scales.
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16

Shukla, Vipin C., and Pulak M. Pandey. "Experimental investigations into sintering of magnetic abrasive powder for ultrasonic assisted magnetic abrasive finishing process." Materials and Manufacturing Processes 32, no. 1 (September 27, 2016): 108–14. http://dx.doi.org/10.1080/10426914.2016.1176199.

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17

Maiboroda, Viktor S. "Rheological Properties of a Powder Magnetic Abrasive Tool." Powder Metallurgy and Metal Ceramics 42, no. 5/6 (May 2003): 315–21. http://dx.doi.org/10.1023/a:1025736116399.

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18

Gao, Yuewu, Yugang Zhao, Guixiang Zhang, Guiguan Zhang, and Fengshi Yin. "Polishing of paramagnetic materials using atomized magnetic abrasive powder." Materials and Manufacturing Processes 34, no. 6 (November 27, 2018): 604–11. http://dx.doi.org/10.1080/10426914.2018.1532087.

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19

Gao, Yuewu, Yugang Zhao, Guixiang Zhang, Fengshi Yin, Guoyong Zhao, and Hong Guo. "Characteristics of a novel atomized spherical magnetic abrasive powder." International Journal of Advanced Manufacturing Technology 110, no. 1-2 (August 12, 2020): 283–90. http://dx.doi.org/10.1007/s00170-020-05810-z.

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20

Mikheev, M. V., A. V. Bolotskaya, A. M. Stolin, and P. M. Bazhin. "Abrasive Powder Materials with Wear-Resistant and Magnetic Components." Inorganic Materials 57, no. 10 (October 2021): 1092–96. http://dx.doi.org/10.1134/s0020168521100083.

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21

Biloshytskyi, Mykola, Halyna Tatarchenko, Nataliia Biloshytska, and Pavlo Uvarov. "Operational lifetime increase of the pumping equipment when pumping-out contaminated groundwater." Mining of Mineral Deposits 15, no. 1 (2021): 42–49. http://dx.doi.org/10.33271/mining15.01.042.

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Purpose. Solving the problem of increasing the pumping equipment operational lifetime when pumping-out contaminated groundwater in the iron-ore industry by extracting the hard, abrasive part, using magnetic filters based on permanent ferrite magnets. Methods. To produce spherical hard-magnetic ferrite elements that catch finely-dispersed magnetic and weakly-magnetic abrasive particles when pumping-out contaminated groundwater in the iron-ore industry, barium ferrite powder BaО∙6Fe2O3 is applied, which is usually used for obtaining hard-magnetic ferrites. Spherical elements for filling a magnetic filtering installation are obtained by the method of spheroidizing the barium ferrite powder in a dragee machine. Sintering of spherical granules obtained from barium ferrite powder is conducted in a high-temperature atmospheric electric box furnace. The sintered spherical elements made of hard-magnetic barium ferrite are magnetized using a magnetic pulsed toroidal-shaped setup in a pulsed constant magnetic field. Findings. For continuous pumping-out and purification of contaminated groundwater from magnetic, weakly-magnetic and non-magnetic highly abrasive particles with the help of magnetic filters, a scheme of a filtering installation of two sections is pro-posed. A technology for producing spherical permanent magnets from barium ferrite powder has been developed for a filtering installation, which includes a coarse purification column with hollow-spherical permanent magnets of 16-17 mm in diameter and a fine purification column with full-bodied spherical barium ferrite magnets of 6-7 mm in diameter. Originality.The term of pumping equipment operation is doubled if to eliminate abrasive wear due to the filtering two-section installation by filling with barium ferrite spherical magnets. In the case of changing the filter, idle time is reduced by using the supplementary auxiliary column. The possibility of processing filtration products and their use in the field of construction and metallurgy without environmental pollution is substantiated. Practical implications. The scheme of magnetic groundwater purification in the iron-ore industry is proposed, consisting of a filtering column of coarse and fine purification from abrasive particles. A technology for producing spherical magnets with different diameters has been developed to ensure the quality of the process. The research results allow to increase the operational lifetime of pumping equipment by eliminating abrasive wear, which will lead to significant savings in the replacement and repair of centrifugal pumps. Keywords: pumping equipment, groundwater, wear, barium ferrite, spherical magnet, filter, iron-ore industry
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22

Zhang, Qin Lan, Zhi Yong Lu, and Xiang Liu. "Magnetic Spectral Analysis Method of Ferromagnetic Mixture." Applied Mechanics and Materials 602-605 (August 2014): 2721–25. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2721.

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There are different magnetic property of materials mixed in the mechanical wear of abrasive and powder processing. Depending on different alloy and magnetized material with different magnetic saturation characteristics, some substances reach the magnetic saturation in the magnetization processing soon, while some substances must be in a strong magnetic field to reach saturation, resulting in the magnetic property of combination material mixed with multi-component metal abrasive has multi-ingredient combination characteristics. Based on the PQ excitation measurement method, we analyze the magnetic property between the typical magnetic abrasive individual and combinations. We also build the magnetic spectral characteristics of the mixture which is made up of materials with different magnetic property, and finish the establishment of two mixtures mapping. This paper aims to explore the magnetic spectral analysis method of ferromagnetic mixture from the theory and experiment, and propose the magnetic spectrum analysis and calculation method of the mixture.
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23

Chow, Han Ming, Lieh Dai Yang, Yuan Feng Chen, Yung Ho Huang, and Yan Cherng Lin. "Development on Silicon Rubber Elastic Composite Magnetic Abrasive and Research on Internal Polishing." Applied Mechanics and Materials 620 (August 2014): 472–75. http://dx.doi.org/10.4028/www.scientific.net/amm.620.472.

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With the use of Magnetic Abrasive Finishing (MAF) to polish surfaces of the parts, roughness on the surfaces can reach a level like a mirror. We have devoted to the study of MAF for many years; the magnetic abrasive particle we have developed can yield a value of Ra 0.008μm (Rmax0.1μm), which is similar to the surface of a mirror. However, there is no way to absorb charging of abrasive particle during polishing for conventional stiff abrasive materials. Therefore, it is difficult to obtain the nanolevel mirror surface. The study is based on silicon rubber and mix Sic and pure iron powder to develop elastic magnetic abrasive particles. During the process, employing the micro elastic of the polymer elastic magnetic abrasive particle to make the particle shape change and increase the contact area, therefore to improve the surface roughness by micro polishing to achieve a nanolevel mirror polishing demand。 The particle could be made easily in a short time, therefore it could reduce production cost and achieve environmental protection simultaneously.
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24

Park, Jung Il, S. L. Ko, Y. H. Hanh, and Yuri M. Baron. "Effective Deburring of Micro Burr Using Magnetic Abrasive Finishing Method." Key Engineering Materials 291-292 (August 2005): 259–64. http://dx.doi.org/10.4028/www.scientific.net/kem.291-292.259.

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Micro burrs formed in micro parts are not subject to be removed by the conventional deburring method for marco parts. Magnetic abrasive deburring method which was proved to be effective for small burrs are applied for deburring the micro burr in electric gun parts used in TV monitor. A specific magnetic inductor is designed and manufactured for this part. To improve the deburring performance, vibration table is used for increasing the relative velocity. To evaluate the deburring capability and surface finishing, edge shape, surface roughness and composition of surface material are measured precisely. It is verified the chemical composition of surface is not affected by the powder composition when the proper powder are used with coolant.
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25

Chen, Y., and Dong Ying Ju. "Application of Rare Earth Permanent Magnet on Magnetic Abrasive Machining." Key Engineering Materials 336-338 (April 2007): 712–14. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.712.

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Because of the raw material elements and its purity and so on, the Nd-Fe-B permanent magnet, the strongest magnetic material, which needs artificial synthesis, can hardly be used directly. The performance of the permanent magnet has not yet been greatly developed owing to the limitation of the artificial synthesizing technology, of the powder sintering technology and that of the application. In this paper, the magnetic abrasive machining method as a new application is put forward, and from this viewpoint, are discussed the performance and the processing technology of the permanent magnet and the magnetic abrasive machining method. A sintering route combining the direction heat treatment technique to increase the magnetic energy is suggested.
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26

Ahmadi, Farshid, Hassan Beiramlou, and Pouria Yazdi. "Effect of abrasive particle morphology along with other influencing parameters in magnetic abrasive finishing process." Mechanics & Industry 22 (2021): 15. http://dx.doi.org/10.1051/meca/2021013.

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Surface characteristics play a very important role in medical implants and among surface features, surface roughness is very effective in some medical applications. Among the various methods used to improve surface roughness, magnetic abrasive finishing (MAF) process has been widely used in medical engineering. In this study, the effect of abrasive particle morphology along with four other process parameters, including type of work metal, finishing time, speed of finishing operation, and the type of abrasive powder were experimentally evaluated. Full factorial technique was used for design of experiment. Three commonly used metals in orthopedic implants i.e., Ti-6Al-4V alloy, AZ31 alloy and austenitic stainless-steel 316LVM, were selected for this study. Also, two types of magnetic abrasive particles with different shapes (spherical and rod-shaped) were considered in the experiments. The results of the experiments indicated that the morphology of the abrasive particles and the finishing time had the greatest effect on surface roughness and using rod-shaped abrasive particles resulted in better surface quality comparing to the spherical particles. Besides, the surface quality of steel 316LVM after MAF was the best among the other examined metals. Interaction plots of ANOVA also showed that interactions of material with morphology of abrasive particles, and material with machining time were found to be reasonably significant.
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27

Fang, S., and A. Frank. "A Metallographic Preparation Method for Three-Dimensional Microstructural Characterization of Machining Chips." Practical Metallography 58, no. 10 (October 1, 2021): 644–61. http://dx.doi.org/10.1515/pm-2021-0056.

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Abstract Chip formation is an important indicator of machining processes. Statistical characterization of machining chips’ geometric features can offer crucial information for evaluating the stability and productivity of the machining processes. In abrasive machining processes, an abundance of small chips are produced by the vast number of abrasives exposed to the cutting surfaces. Geometric features of abrasives, such as shape, dimension, and distribution, may be hierarchically passed on to the chips. Similar to those of the abrasives, geometric features of the chips may also vary to a certain extent and conform to some statistical distribution. To verify these characteristics, a metallographic preparation method in connection with chips formed in abrasive machining processes is proposed in this study. Challenges in collecting and segmenting chips have been successfully overcome through several steps using ultrasonic bath cleaning and powder cold embedding methods. Finally, a considerable amount of chips was formed and uniformly embedded in a resin mold, ready for microscopic characterization.
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28

Litvinenko, V. A. "Finishing of Shape Surfaces by Magnetic Abrasive Polishing Method with Rotating Working Area." Key Engineering Materials 291-292 (August 2005): 303–8. http://dx.doi.org/10.4028/www.scientific.net/kem.291-292.303.

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The stable industrial trends towards improvement of product accuracy and quality call for necessity to widen the nomenclature of details surfaces and materials, which need finishing. The method of magnetic abrasive finishing (MAF) helps to meet these challenges. This paper presents the results of study of technological potential of MAF equipment with rotating working area, filled with magnetic-abrasive powder. Such equipment allows to polish the cylindrical, conical and helical surfaces of core details made of magnetic and non-magnetic materials. Geometrical accuracy and roughness of the above mentioned surfaces after MAF and also the conditions of their performance theoretically and experimentally studied. It is established that MAF changes the fine structure of detail surface layer made of hardened high-speed steels, titanium and aluminum alloys and improves their surface performance.
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29

Gao, Yuewu, Yugang Zhao, Guixiang Zhang, Fengshi Yin, Guoyong Zhao, and Hong Guo. "Preparation and characterization of spherical diamond magnetic abrasive powder by atomization process." Diamond and Related Materials 102 (February 2020): 107658. http://dx.doi.org/10.1016/j.diamond.2019.107658.

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30

Wu, Yong Bo, and Kunio Shimada. "Quartz Wafer Machining Using MCF (Magnetic Compound Fluid) Polishing Liquid Frozen with Liquid Nitrogen." Key Engineering Materials 389-390 (September 2008): 187–92. http://dx.doi.org/10.4028/www.scientific.net/kem.389-390.187.

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This paper deals with the machining of quartz wafers using an MCF (Magnetic Compound Fluid) polishing liquid, frozen with liquid nitrogen. This type of polishing liquid is composed of water-based MF (Magnetic Fluid), iron powder, abrasive particle and α-cellulose, and consequently reacting to magnetic fields. Experiments of polishing quartz wafers using the MCF method were carried out on a previously developed apparatus. The results show that an MCF polishing liquid, frozen with liquid nitrogen, has greater material removal capability than one that has not been frozen. A frozen MCF polishing liquid containing larger abrasive particles yields a higher material removal rate, however the surface roughness deteriorates. The highest material removal rate and the best surface roughness were obtained when the percentage of water, in the frozen MCF polishing tool, was 34.7%.
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31

Yang, Sheng Fu, Chang Sing Hwang, Zong Yang Jhuang Shie, Chun Huang Tsai, Chun Liang Chang, and Te Jung Huang. "Development of Recovery System for Extracting Silicon Carbide from Photovoltaic Industry Abrasive Slurry." Key Engineering Materials 656-657 (July 2015): 28–32. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.28.

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Silicon carbide (SiC) is widely employed as an abrasive material in aqueous media for sawing silicon ingot into individual wafers in photovoltaic industry. After a series of cutting, grinding and polishing operation, a mixture of substances (Cutting fluid, SiC, Si and small amount of magnetic metal) is produced as a form of slurry. The used SiC can be preferably recovered and reused for another application, rather than disposed of as waste. In this study, a pilot scale system (25 kg/h) is developed to extract SiC from photovoltaic industry abrasive slurry. The recovery system is composed of physical and chemical separation processes to remove silicon particles and magnetic materials which are dispersed in the slurry. X-ray diffraction analysis showed that purified powder is in the 6H-SiC structure and powder consists only of silicon carbide and has no residual silicon. It might be applied again in silicon ingot cutting or for other purposes which require this kind of ceramic material.
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32

Oliker, V. E., A. F. Zhornyak, T. Ya Gridasova, and K. N. Chebotareva. "Functional role of the structural constituents of the particles of magnetic abrasive powder." Soviet Powder Metallurgy and Metal Ceramics 24, no. 9 (September 1985): 724–28. http://dx.doi.org/10.1007/bf00792173.

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Shukla, Vipin C., Pulak M. Pandey, Uday S. Dixit, Anish Roy, and Vadim Silberschmidt. "Modeling of normal force and finishing torque considering shearing and ploughing effects in ultrasonic assisted magnetic abrasive finishing process with sintered magnetic abrasive powder." Wear 390-391 (November 2017): 11–22. http://dx.doi.org/10.1016/j.wear.2017.06.017.

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34

Chen, Zhi Chun, Bo Wu, Wei Fan, and Ya Li Zhou. "Experimental Research on the Characteristics of the Magnetic Compound Fluid by Grinding Solar Wafers." Advanced Materials Research 1055 (November 2014): 63–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1055.63.

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This paper studies the grinding characteristics of magnetic compound fluid by conducting large amounts of experiments. Magnetic compound fluid (MCF) is formed by mixing abrasive grains, α-cellulose, iron powder and Magnetic-Fluid together according to a certain proportion. The experiments are conducted to test the effect of process parameters (such as different period of time, various speed of main axle and fluctuating magnetic field) on grinding results using Solar wafers. The results showed that the grinding surface of solar wafers is within Ra0.1 after 3 minutes and the microscopic appearance of the surface is flat and free of burns phenomenon.
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35

Alok, Anupam, M. S. Niranjan, Abhinav Kumar, Manjesh kumar, and Manas Das. "Synthesis and Characterization of Sintered Magnetic Abrasive Particles having Alumina and Carbonyl Iron Powder." IOP Conference Series: Materials Science and Engineering 804 (June 17, 2020): 012002. http://dx.doi.org/10.1088/1757-899x/804/1/012002.

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36

Titarenko, O., N. Zubkova, and S. Novak. "DETERMINING OF MAGNETIC ABRASIVE POLISHING OF OPTICAL POLYMERS FOR SENSITIVE ELEMENTS OF RADIATION INDICATORS." Collection of scientific works of the National Academyof the National Guard of Ukraine 2, no. 36 (2020): 26–34. http://dx.doi.org/10.33405/2409-7470/2020/2/36/223550.

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Extending the durability of functioning of the sensitive elements of radiation indicators and increasing their reliability and safety are the main requirements for producers of modern radiation reconnaissance and monitoring devices. The proposed solutions for construction improving of products provide for the usage of optical fibers and the corresponding formation of loop-shaped channels in the finished sensitive polymer element. Potential possibilities of using magnetic abrasive polishing for finishing channel surfaces are considered. For the chosen construction of the polishing head, the material and form of the powder particles composition and the process parameters are proposed. The effect of the frequency and amplitude of vibration of abrasive particles on the depth of their penetration into the surface layer of the polymer is investigated. It has been determined that the widest possibilities of using powders of the composition Fe - C - Si - Ti with a diameter of d = 50 – 400 μm have a mode when the pressure of the air flow by feeding particles is maintained at a level of 1 atm, the magnetic induction of the field in the working gap is 0.8 T, the vibration amplitude of the particles is a = 0.4 mm, and the vibration frequency varies in the range f = 25 – 30 Hz.
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Chumak, Anatolii, Sergey Klimenko, Sergei Klimenko, Andriy Manokhin, Artem Naydenko, Marina Kopeikina, Vitalii Burikin, Maksim Bondarenko, and Viktor Burlakov. "FINISH MACHINING OF THE CUTTING INSERTS FROM CUBIC BORINE NITRIDE BL GROUP COMPOSITE." Cutting & Tools in Technological System, no. 94 (June 16, 2021): 102–14. http://dx.doi.org/10.20998/2078-7405.2021.94.12.

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Finishing methods of machining of superhard composite’s working elements based on cubic boron nitride BL group are considered. The results of the microgeometry formation research of the cutting inserts’ surfaces during machining by free powders of synthetic diamond, grinding wheels and a method of vibro-magnetic-abrasive machining (VMAM) are presented. It is shown that during VMAM the friction between the inserts’ surfaces and the abrasive particles result in microremoval of the material, which reduces the roughness of the cutting inserts’ surfaces. It is established that additional fine grinding with 14/10 mkm synthetic diamond powder provides the absence of microgeometry defects of the cutting inserts’ surfaces left by pre-machining. The result of high-quality rounding of cutting edges and the formation of surfaces of cutting inserts with less roughness is an increase in strength and wear resistance of metal-cutting tools in high-speed machining under conditions of significant loads.
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38

Kim, Jeong Su, Lida Heng, Sieb Chanchamnan, and Sang Don Mun. "Machining the Surface of Orthopedic Stent Wire Using a Non-Toxic Abrasive Compound in a Magnetic Abrasive Finishing Process." Applied Sciences 11, no. 16 (August 6, 2021): 7267. http://dx.doi.org/10.3390/app11167267.

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The orthopedic stent wire is one of the critical medical components, which is mainly used for the replacement of physically damaged parts in the human body. Therefore, a smooth surface and lack of toxic substances on the surface of this component are highly demanded. In this study, a magnetic abrasive finishing (MAF) process was carried out using a non-toxic abrasive compound (a mixture of iron powder, diamond particles, cold cream, and eco-friendly oils) to achieve high-quality surface finishing of orthopedic stent wire. The surface roughness (Ra) of the stent wire was investigated according to various processing parameters: different rotational speeds (500, 1000, and 2000 rpm), diamond particle sizes (1.0 µm), and three eco-friendly oils (olive oil: C98H184O10; grapeseed oil: C18H32O2; and castor oil: C57H104O9) within 300 s of the finishing time. The results showed that the surface roughness of the wire was reduced to 0.04 µm with a rotation speed of 1000 rpm and a diamond particle size of 1 µm when using grapeseed oil. SEM microimages and EDS analysis showed that the MAF process using a non-toxic abrasive compound could improve the surface quality of orthopedic Ni-Ti stent wire with a lack of toxic substances on the surface finish.
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39

Kadhum, Ali H., and Hanan H. Murad. "Optimization of Material Removal Rate and Temperature in Magnetic Abrasive Finishing Process for Stainless Steel 304." Al-Khwarizmi Engineering Journal 13, no. 4 (March 19, 2019): 22–29. http://dx.doi.org/10.22153/kej.2017.06.001.

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The effect of the magnetic abrasive finishing (MAF) method on the temperature rise (TR), and material removal rate (MRR) has been investigated in this paper. Sixteen runs were to determine the optimum temperature in the contact area (between the abrasive powder and surface of workpiece) and the MRR according to Taguchi orthogonal array (OA). Four variable technological parameters (cutting speed, finishing time, working gap, and the current in the inductor) with four levels for each parameter were used, the matrix is known as a L16 (44) OA. The signal to noise ratio (S/N) ratio and analysis of the variance (ANOVA) were utilized to analyze the results using (MINITAB17) to find the optimum condition and identify the significant parameters affecting on the TR., and MRR of the steel 304. IR camera was used to measure the experimental temperature. The results showed that the optimum temperature in contact area of workpiece is 70.7 °C.
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40

Boopathi, Sampath, Alagu Thillaivanan, Mohammed Abdul Azeem, P. Shanmugam, and V. R. Pramod. "Experimental investigation on abrasive water jet machining of neem wood plastic composite." Functional Composites and Structures 4, no. 2 (April 6, 2022): 025001. http://dx.doi.org/10.1088/2631-6331/ac6152.

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Abstract In this article, the neem wood plastic composite material has been fabricated by mixing neem wood saw powder with polypropylene (PP) matrix by injection molding method to study the machining characteristics of the abrasive water jet machining process. The volume percentage of neem wood saw powder, the volume percentage of additive agent talc mixed with PP matrix (A), table traveling speed (Ts), and water-jet pressure (Wp) have been considered as process parameters. The experiments were conducted and analyzed to predict the optimum parameters setting for surface roughness (SR) and kerf angle (KA) using the Taguchi method. It was observed that KA and SR have been greatly impacted by the percentage of neem wood saw powder, table traveling speed, and water-jet pressure. The SR and KA were minimized by reducing the percentage of neem wood powder, table traveling speed, and water-jet pressure. The SR has been decreased by adding talc agent, conversely, the KA has been increased. The concurrent optimum process parameters setting to minimize both SR and KA had been estimated by the weighted product method (WPM). The predicted results from Taguchi and WPM had been verified by microscopic analysis and confirmation experiments.
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41

Zelinko, Andrii, Florian Welzel, Dirk Biermann, and Viktor Maiboroda. "Influence of Process Parameters and Initial Surface on Magnetic Abrasive Finishing of Flat Surfaces on CNC Machine Tools." Journal of Manufacturing and Materials Processing 5, no. 4 (October 14, 2021): 108. http://dx.doi.org/10.3390/jmmp5040108.

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Magnetic abrasive finishing (MAF) shows a high potential for use on computerized numerical control (CNC) machine tools as a standard tool to polish workpieces directly after the milling process. This paper presents a new MAF tool with a single, large permanent magnet and a novel top cover structure for finishing the plain ferromagnetic workpieces. The top cover structure of the MAF tool, combined with an optimized working gap, ensures the effect of mechanical powder compaction, which leads to a significant increase in process capability and surface roughness reduction. The influence of the process parameters such as feed rate, equivalent cutting speed, working gap (including for three grain sizes) and the gap to the magnet was investigated. In addition, the influence of the initial surface after face milling, end milling, ball end milling and grinding on the surface quality after MAF was investigated. Furthermore, three typical surfaces after milling and MAF were analyzed. By magnetic abrasive finishing, a significant surface quality improvement of the initial milled surfaces to roughness values up to Ra = 0.02 µm and Rz = 0.12 µm in one processing step could be achieved.
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42

Maiboroda, V. S. "Interaction of a powder magnetic-abrasive tool with the surface of an articles in annular gaps." Powder Metallurgy and Metal Ceramics 38, no. 7-8 (July 1999): 424–27. http://dx.doi.org/10.1007/bf02676181.

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43

Nepomnyashchii, V. V., S. M. Voloshchenko, T. V. Mosina, K. A. Gogaev, M. G. Askerov, and A. M. Miropol’skii. "Metal Surface Finishing With Magnetic Abrasive Powder Based on Iron With Ceramic Refractory Compounds (Mechanical Mixtures)." Refractories and Industrial Ceramics 54, no. 6 (March 2014): 471–74. http://dx.doi.org/10.1007/s11148-014-9635-x.

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44

Vernigorov, Yuri, Valery Lebedev, and Lidianna Chunakhova. "Selection of Non-Magnetic Fraction from the Slime Wastes of Metal Production in the Electromagnetic Field." MATEC Web of Conferences 297 (2019): 04002. http://dx.doi.org/10.1051/matecconf/201929704002.

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It is proved that the use of a variable inhomogeneous magnetic field, created by the superposition of constant and variable, strongly inhomogeneous fields, is considered to be very promising for the separation of non-magnetic fraction from powders of magnetic materials. This article introduces the effective technology of separation of non-magnetic fraction from the sludge wastes of metal production in the electromagnetic field, which allows to destroy the aggregates, to separate the abrasive and to get products of high purity. A complex on processing of grinding sludge includes the following blocks: the loading block with dispenser; block of preliminary squeezing and washing of DRC; the block of drying; the block of a refinement; the block of division of sludge fractions. Experimental approbation of the proposed technological scheme of sludge separation, which had been carried out on iron ore concentrate of class 63 microns with silica content of 4.57% of the mass, showed that with the field parameters close to the calculated, the magnetic vibrating layer of iron powder PZh-4M has the maximum development; increasing the separation time leads to more efficient separation in the interval of field induction gradient from 550 mT/ m to 610 mT/m.
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45

Wu, Yong Bo, Takashi Sato, Wei Min Lin, K. Yamamoto, and Kunio Shimada. "The Detailed Performance of MCF Polishing Liquid in Nano-Precision Surface Treatment of Acrylic Resin." Advanced Materials Research 76-78 (June 2009): 331–36. http://dx.doi.org/10.4028/www.scientific.net/amr.76-78.331.

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This paper deals with the experimental investigation on the detailed performance of MCF (magnetic compound fluid) polishing liquid (MPL) in nano-precision surface treatment of acrylic resin that is essentially required for producing the model in the process of developing an inaugural mechanical system. The MPL is produced in practice by mixing iron powder, abrasive particle and -cellulose fiber into a MF (magnetic fluid), and hence a kind of functional fluid reacting to magnetic fields. Following the previous works confirming the performance of MPL in the surface finishing of acrylic resin, in this work a series of experiments were conducted to reveal how the process parameters affect the machining characteristics in details in order to establish the new technique. The results showed that a mirror surface can be easily obtained once the process parameters have been set up optimally.
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46

Zhao, Yunhao, Jason Ratay, Kun Li, Hitomi Yamaguchi, and Wei Xiong. "Effects of Magnetic Abrasive Finishing on Microstructure and Mechanical Properties of Inconel 718 Processed by Laser Powder Bed Fusion." Journal of Manufacturing and Materials Processing 6, no. 2 (April 8, 2022): 43. http://dx.doi.org/10.3390/jmmp6020043.

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Surface finishing is challenging in the context of additively manufactured components with complex geometries. Magnetic abrasive finishing (MAF) is a promising surface finishing technology that can refine the surface quality of components with complex shapes produced by additive manufacturing. However, there is insufficient study regarding the impact of MAF on microstructure–property relationships for additively manufactured builds, which is critical for evaluating mechanical performance. In this work, we studied the effects of different combinations of MAF and heat treatment steps on the microstructure–property relationships of Inconel 718 superalloys made by laser powder bed fusion (LPBF). The application of MAF was found to significantly reduce the surface roughness and refine the grain size of aged alloys. Moreover, MAF was able to increase the alloy elongation, which could be further influenced by the sequence of MAF and different heat treatment steps. The highest elongation could be achieved when MAF was performed between homogenization and aging processes. This work indicates that an effective combination of surface finishing and heat treatment is critical for the improvement of alloy performance. Furthermore, it demonstrates a promising solution for improving the performance of LPBF Inconel 718 by integrating MAF and heat treatment, which provides new perspectives on the post-processing optimization of additively manufactured alloys.
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47

Baghani, Mohammad, Mahmood Aliofkhazraei, Amir Seyfoori, and Mehdi Askari. "Mechanical alloying of CuFe-alumina nanocomposite: study of microstructure, corrosion, and wear properties." Science and Engineering of Composite Materials 25, no. 6 (November 27, 2018): 1085–94. http://dx.doi.org/10.1515/secm-2016-0313.

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AbstractThe effects of adding Al2O3 nanoparticles on the microstructure, tribological, magnetic, and corrosion properties of CuFe-Al2O3 nanocomposites were investigated in this work. The mixture of Cu-25 wt.% Fe powder with 5 vol.% Al2O3 was mechanically milled. X-ray diffraction results revealed that after 60 h of mechanical alloying, CuFe solid solution was formed. Magnetic hysteresis loops of the mechanically alloyed powders were extracted at room temperature. The morphology and elemental analysis of the sintered specimens were studied by field emission scanning electron microscope (SEM). It was observed that uniform distribution and embedding of Al2O3 nanoparticles in the CuFe alloy matrix in nanocomposites were achieved, which exhibited excellent performances. Tribological properties were evaluated through a pin-on-disk wear test, and it was found that by the addition of Al2O3 nanoparticles to CuFe alloy, the weight loss rate was reduced by 30%. The existence of Al2O3 nanoparticles in the matrix of CuFe alloy causes the wear mechanism change from adhesive to abrasive, which means a considerable wear resistance was obtained in nanocomposites. The corrosion properties of the sintered samples in a solution of 3.5% NaCl were studied by potentiodynamic polarization. With the addition of Al2O3 nanoparticles, the corrosion rate of the alloy was reduced by 75%.
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48

Senyut, V. T. "Sintering of composite materials for tool appointment, based on impact diamonds, under high pressure and temperatures." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 66, no. 1 (April 2, 2021): 47–57. http://dx.doi.org/10.29235/1561-8358-2021-66-1-47-57.

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The article presents the results of a study of composite materials based on diamond-lonsdaleite abrasive (DLA) and various binders (Fe–Ti mechanocomposite, silicon carbide SiC). A metal-matrix composite material with a multimodal nano- and microlevel structure, characterized by increased adhesion of diamond grains to the binder, is obtained on the basis of impact diamonds and a Fe–Ti nano-mechanical composite. It is shown that the use of impact diamonds in comparison with synthetic diamonds makes it possible to reduce the pressure of thermobaric treatment by 30–50 % at the same sintering temperatures. The use of Fe–Ti–DLA composites in the process of magnetic-abrasive polishing (MAP) makes it possible to increase the removal rate of material based on silicon by 1.5–2 times and reduce the processing time by 30 % compared to ferroabrasive powder (FAP) based on synthetic diamonds. The effect of adding of silicon carbide on the process of obtaining a superhard composite material impact diamond – SiC is investigated. It is found that adding of SiC helps to reduce the defectiveness of the material and increase the homogeneity of its structure in comparison with the material without adding of a binder. In this case, an increase in the content of SiC and Si also leads to an inversion of the structure type of the superhard composite from polycrystalline to matrix. It is found that the additional use of amorphous soot and boron affects the refinement of the matrix structure of the composite material due to the formation of boron carbide and secondary finely dispersed silicon carbide.
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49

Barman, Anwesa, and Manas Das. "Magnetic field assisted finishing process for super-finished Ti alloy implant and its 3D surface characterization." Journal of Micromanufacturing 1, no. 2 (July 23, 2018): 154–69. http://dx.doi.org/10.1177/2516598418785506.

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Titanium alloy is used in medical industries due to its biocompatibility. Requirement of implant’s surface roughness and surface topography depends mainly upon its application. In the present study, application of titanium alloy is considered as femoral knee joint implant. The capability of magnetic field assisted finishing (MFAF) process and the polishing tool to provide implant worthy surface is analyzed here. In MFAF process, magnetorheological fluid mixed with abrasive powder in acidic base medium is used as the finishing medium. Characterization of the finished surface is carried out by analyzing 3D surface roughness parameters. The selected 3D surface parameters ( Sa, Spk, Sk and Svk) are considered due to their importance concerning load-bearing articulating surface of knee joint implant. Statistical design of experiment is used for experimental study and subsequently process parameters are optimized. From experimental investigation, the values of Sa, Spk, Sk and Svk are obtained as 11.32 nm, 15.82 nm, 6.51 nm and 41.15 nm, respectively, at optimum process parameter condition. The optimum process parameter values are 901 rpm of the tool, 0.60-mm working gap and 4.30 hrs of finishing time. The obtained values of 3D surface roughness parameters are in the nanometer range and the surface topography will render better wear properties, performance and longer implant life. Further confirmation experiments support the optimized values. The effect of individual process parameter on output responses is also analyzed.
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Mirian, Seyed Saeed, Alireza Fadaei, Seyed Mohsen Safavi, Mahmoud Farzin, and Mahmoud Salimi. "Improving the quality of surface in the polishing process with the magnetic abrasive powder polishing using a high-frequency induction heating source on CNC table." International Journal of Advanced Manufacturing Technology 55, no. 5-8 (December 16, 2010): 601–10. http://dx.doi.org/10.1007/s00170-010-3109-1.

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