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This paper describes the development of a movable manual electromagnet with an adjustable flux density to improve the inner surface smoothness of a cone pipe using a magnetic abrasive finishing process. This method is fabricated to reduce further the roughness of the internal surface of the conic shape, which was modeled as an electromagnet oscillating in the work zone with a ball roller. Statistically significant improvement in the process was achieved using unbounded magnetic abrasive, light oil, flux density, controlled feed rate, and constant rotational speed in the experiment. The ball transfer equipped on the top of the electromagnet pole plays an essential role in spinning over the outer cone pipe during the experiment and helps reduce friction while the workpiece fluctuates. Furthermore, the flux density can be changed to control the magnetic force and select the most acceptable option. In addition, a procedure for finishing has been designed for finishing a cone pipe, and we sought to understand how the flux density affects the material in removal exterior roughness. As a result, the flux density is clarified, and a higher flux density achieves excellent removal of surface roughness of the inner deformed pipe from 1.68 μm to 0.39 μm within 24 min.
Jeong Su Kim; Sieb Chanchamnan; Lida Heng; Guenil Kim; Sung-Hoon Oh; Sang Don Mun. Development of an Inner Finishing Method for Brass Cone Pipe via a Movable Manual Electromagnet in a Magnetic Abrasive Finishing Process. Metals 2021, 11, 1379 .
AMA StyleJeong Su Kim, Sieb Chanchamnan, Lida Heng, Guenil Kim, Sung-Hoon Oh, Sang Don Mun. Development of an Inner Finishing Method for Brass Cone Pipe via a Movable Manual Electromagnet in a Magnetic Abrasive Finishing Process. Metals. 2021; 11 (9):1379.
Chicago/Turabian StyleJeong Su Kim; Sieb Chanchamnan; Lida Heng; Guenil Kim; Sung-Hoon Oh; Sang Don Mun. 2021. "Development of an Inner Finishing Method for Brass Cone Pipe via a Movable Manual Electromagnet in a Magnetic Abrasive Finishing Process." Metals 11, no. 9: 1379.
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.
Jeong Kim; Lida Heng; Sieb Chanchamnan; Sang Mun. Machining the Surface of Orthopedic Stent Wire Using a Non-Toxic Abrasive Compound in a Magnetic Abrasive Finishing Process. Applied Sciences 2021, 11, 7267 .
AMA StyleJeong Kim, Lida Heng, Sieb Chanchamnan, Sang Mun. Machining the Surface of Orthopedic Stent Wire Using a Non-Toxic Abrasive Compound in a Magnetic Abrasive Finishing Process. Applied Sciences. 2021; 11 (16):7267.
Chicago/Turabian StyleJeong Kim; Lida Heng; Sieb Chanchamnan; Sang Mun. 2021. "Machining the Surface of Orthopedic Stent Wire Using a Non-Toxic Abrasive Compound in a Magnetic Abrasive Finishing Process." Applied Sciences 11, no. 16: 7267.
In our previous studies, we have developed a wet process, denoted as laser surface implanting (LSI), to synthesize a copper/single-walled carbon nanotube (Cu–SWCNT) metal nanocomposite. The nanostructure of this Cu–SWCNT composite was shown to contain discernable SWCNT clusters in nanosizes inside the copper matrix. Its hardness could achieve up to three times that of pure copper, verified by micro-hardness and nano-hardness tests. A focus ion beam bombardment test and a plane strain compression test show 2.5 times toughness improvement for the Cu-SWCNT composite. Based on these strength improvements, two potential applications for the Cu-SWCNT nanocomposite are proposed and their feasibilities are verified using specially design test rigs. The first application is related to creating long lasting electric contacts. The result shows that the Cu-SWCNT nanocomposite is highly wear-resistant. The contact area of the simulated electric contacts increases after repeated impact loading, which potentially could lower the contact resistance. The second application is to use the Cu-SWCNT implants as high strength spot weld for joining copper foils. A smaller weld with a higher strength reduces the power requirement of the laser and, consequently, the thermal distortion for higher-dimensional precision. The specially designed test rig for the weld strength characterization is a new contribution, providing a new testing capability for small and non-homogeneous samples not suitable for a standard tensile test machine.
Jay Tu; Nilesh Rajule; Sang Mun. Laser Spot Welding and Electric Contact Points Using Copper/Single-Walled Carbon Nanotube Nanocomposite Synthesized by Laser Surface Implanting. Journal of Composites Science 2021, 5, 87 .
AMA StyleJay Tu, Nilesh Rajule, Sang Mun. Laser Spot Welding and Electric Contact Points Using Copper/Single-Walled Carbon Nanotube Nanocomposite Synthesized by Laser Surface Implanting. Journal of Composites Science. 2021; 5 (3):87.
Chicago/Turabian StyleJay Tu; Nilesh Rajule; Sang Mun. 2021. "Laser Spot Welding and Electric Contact Points Using Copper/Single-Walled Carbon Nanotube Nanocomposite Synthesized by Laser Surface Implanting." Journal of Composites Science 5, no. 3: 87.
Nickel-titanium (Ni-Ti) has been widely used to make shape-memory actuator wire for numerous medical industrial applications, with the result that it frequently comes into contact with the human body. High-quality and nontoxic surfaces of this material are therefore in high demand. We used a rotating magnetic field for an ultraprecision finishing of Ni-Ti stent wire biomaterials and evaluated the finishing technique’s efficacy with different processing oils. To create nontoxic Ni-Ti stent wire, the industrial processing oils that are generally used in the surface improvement process were exchanged for oils with low environmental impacts, and processed under rotating magnetic fields at different speeds and processing times. The processing performance of the different oils was compared and verified. The results show that ultraprecision magnetic abrasive finishing that uses olive and castor oil improves surface roughness by 66.67%, and 45.83%, respectively. SEM and energy-dispersive X-ray spectroscopy (EDX) analyses of the finished components (before and after processing) showed that the material composition of the Ni-Ti stent wire was not changed. Additionally, the magnetic abrasive tool composition was not found on the surface of the finished Ni-Ti stent wire. In conclusion, the environmentally friendly oil effectively improved the diameter of the Ni-Ti stent wire, demonstrating the utility of olive and castor oil in ultraprecision finishing of Ni-Ti stent wire biomaterials.
Jeong Su Kim; Sung Sik Nam; Lida Heng; Byeong Sam Kim; Sang Don Mun. Effect of Environmentally Friendly Oil on Ni-Ti Stent Wire Using Ultraprecision Magnetic Abrasive Finishing. Metals 2020, 10, 1309 .
AMA StyleJeong Su Kim, Sung Sik Nam, Lida Heng, Byeong Sam Kim, Sang Don Mun. Effect of Environmentally Friendly Oil on Ni-Ti Stent Wire Using Ultraprecision Magnetic Abrasive Finishing. Metals. 2020; 10 (10):1309.
Chicago/Turabian StyleJeong Su Kim; Sung Sik Nam; Lida Heng; Byeong Sam Kim; Sang Don Mun. 2020. "Effect of Environmentally Friendly Oil on Ni-Ti Stent Wire Using Ultraprecision Magnetic Abrasive Finishing." Metals 10, no. 10: 1309.
Titanium is often used in various important applications in transportation and the healthcare industry. The goal of this study was to determine the optimum processing of magnetic abrasives in beta-titanium wire, which is often used in frames for eyeglasses because of its excellent elasticity among titanium alloys. To check the performance of the magnetic abrasive finishing process, the surface roughness (Ra) was measured when the specimen was machined at various rotational speeds (700, 1500, and 2000 rpm) in the presence of diamond paste of various particle sizes (0.5, 1, and 3 μm). We concluded that the surface roughness (Ra) was the best at 2000 rpm, 1 μm particle size, and 300 s processing time, and the surface roughness of β-titanium improved from 0.32 to 0.05 μm. In addition, the optimal conditions were used to test the influence of the finishing gap, and it was found that the processing power was superior at a gap of 3 mm than at 5 mm when processing was conducted for 300 s.
Sung Sik Nam; Jeong Su Kim; Sang Don Mun. Magnetic Abrasive Finishing of Beta-Titanium Wire Using Multiple Transfer Movement Method. Applied Sciences 2020, 10, 6729 .
AMA StyleSung Sik Nam, Jeong Su Kim, Sang Don Mun. Magnetic Abrasive Finishing of Beta-Titanium Wire Using Multiple Transfer Movement Method. Applied Sciences. 2020; 10 (19):6729.
Chicago/Turabian StyleSung Sik Nam; Jeong Su Kim; Sang Don Mun. 2020. "Magnetic Abrasive Finishing of Beta-Titanium Wire Using Multiple Transfer Movement Method." Applied Sciences 10, no. 19: 6729.
Ultra-Precision Magnetic Abrasive Finishing (UPMAF) is a technique for enhancing the surface quality of products, such as medical devices. In the UPMAF process, magnetic poles connect magnets and magnetic abrasive particles to form magnetic abrasive brushes for controlling the surface finishing process. Different edge shapes of the magnetic pole achieve different surface finish results. In this study, three magnetic pole designs, with a sharp edge, a square edge, and a round edge, were studied regarding their resulting surface quality and roundness precision for meso-scale diameter ZrO2 bars. Experiments were conducted to quantify critical input parameters, including magnetic pole shape, diamond particle grain size, and magnetic pole vibration frequency at an ultra-high rotational speed of 35000 rpm. An FEM model for magnetic field is used to evaluate the magnetic flux density results of the different magnetic pole shapes. The results show that stock ZrO2 bars with an Ra surface roughness of 0.18 μm and a roundness error of 3.5 μm can be improved to 0.02 μm and 0.2 μm, respectively, with the following process parameters: magnetic poles with 2-mm square edges, 1-μm diamond abrasive particles, magnetic pole vibration frequency of 8 Hz, and a workpiece rotational speed of 35000 rpm for 40 s of finishing time.
Lida Heng; Jeong Su Kim; Juei-Feng Tu; Sang Don Mun. Fabrication of precision meso-scale diameter ZrO2 ceramic bars using new magnetic pole designs in ultra-precision magnetic abrasive finishing. Ceramics International 2020, 46, 17335 -17346.
AMA StyleLida Heng, Jeong Su Kim, Juei-Feng Tu, Sang Don Mun. Fabrication of precision meso-scale diameter ZrO2 ceramic bars using new magnetic pole designs in ultra-precision magnetic abrasive finishing. Ceramics International. 2020; 46 (11):17335-17346.
Chicago/Turabian StyleLida Heng; Jeong Su Kim; Juei-Feng Tu; Sang Don Mun. 2020. "Fabrication of precision meso-scale diameter ZrO2 ceramic bars using new magnetic pole designs in ultra-precision magnetic abrasive finishing." Ceramics International 46, no. 11: 17335-17346.
The research aims to describe the micro-machining characteristics in a high-speed magnetic abrasive finishing, which is applicable for achieving the high surface accuracy and dimensional accuracy of fine ceramic bars that are typically characterized by strong hardness and brittle susceptibility. In this paper, the high-speed magnetic abrasive finishing was applied to investigate how the finishing parameters would have effects on such output parameters as surface roughness, variation of diameters, roundness, and removed weight. The results showed that, under variants of diamond abrasives sizing between (1, 3 and 9 µm), 1 µm showed comparatively good values as for surface roughness and roundness within shortest processing time. When the optimal condition was used, the surface roughness Ra and roundness (LSC) were improved to 0.01 µm and 0.14 µm, respectively. The tendency of diameter change could be categorized into two regions—stable and unstable. The finding from the study was that the performance of ultra-precision processing linear controlling was possibly achievable for the stable region of diameter change, while linearly controlling diameters in the workpiece.
Joonhyuk Song; Takeo Shinmura; Sang Don Mun; Minyoung Sun. Micro-Machining Characteristics in High-Speed Magnetic Abrasive Finishing for Fine Ceramic Bar. Metals 2020, 10, 464 .
AMA StyleJoonhyuk Song, Takeo Shinmura, Sang Don Mun, Minyoung Sun. Micro-Machining Characteristics in High-Speed Magnetic Abrasive Finishing for Fine Ceramic Bar. Metals. 2020; 10 (4):464.
Chicago/Turabian StyleJoonhyuk Song; Takeo Shinmura; Sang Don Mun; Minyoung Sun. 2020. "Micro-Machining Characteristics in High-Speed Magnetic Abrasive Finishing for Fine Ceramic Bar." Metals 10, no. 4: 464.
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.
Cheng Yin; Lida Heng; Jeong Su Kim; Min Soo Kim; Sang Don Mun. Development of a New Ecological Magnetic Abrasive Tool for Finishing Bio-Wire Material. Materials 2019, 12, 714 .
AMA StyleCheng Yin, Lida Heng, Jeong Su Kim, Min Soo Kim, Sang Don Mun. Development of a New Ecological Magnetic Abrasive Tool for Finishing Bio-Wire Material. Materials. 2019; 12 (5):714.
Chicago/Turabian StyleCheng Yin; Lida Heng; Jeong Su Kim; Min Soo Kim; Sang Don Mun. 2019. "Development of a New Ecological Magnetic Abrasive Tool for Finishing Bio-Wire Material." Materials 12, no. 5: 714.
In this paper, we propose a new ultra-high-precision magnetic abrasive finishing method for wire material which is considered to be difficult with the existing finishing process. The processing method uses a rotating magnetic field system with unbonded magnetic abrasive type. It is believed that this process can efficiently perform the ultra-high-precision finishing for producing a smooth surface finish and removing a diameter of wire material. For such a processing improvement, the following parameters are considered; rotational speed of rotating magnetic field, vibration frequency of wire material, and unbonded magnetic abrasive grain size. In order to evaluate the performance of the new finishing process for the wire material, the American Iron and Steel Institute (AISI) 1085 steel wire was used as the wire workpiece. The experimental results showed that the original surface roughness of AISI 1085 steel wire was enhanced from 0.25 µm to 0.02 µm for 60 s at 800 rpm of rotational speed. Also, the performance of the removed diameter was excellent. As the result, a new ultra-high-precision magnetic abrasive finishing using a rotating magnetic field with unbonded magnetic abrasive type could be successfully adopted for improving the surface roughness and removing the diameter of AISI 1085 steel wire material.
Lida Heng; Cheng Yin; Seok Ho Han; Jun Hee Song; Sang Don Mun. Development of a New Ultra-High-Precision Magnetic Abrasive Finishing for Wire Material Using a Rotating Magnetic Field. Materials 2019, 12, 312 .
AMA StyleLida Heng, Cheng Yin, Seok Ho Han, Jun Hee Song, Sang Don Mun. Development of a New Ultra-High-Precision Magnetic Abrasive Finishing for Wire Material Using a Rotating Magnetic Field. Materials. 2019; 12 (2):312.
Chicago/Turabian StyleLida Heng; Cheng Yin; Seok Ho Han; Jun Hee Song; Sang Don Mun. 2019. "Development of a New Ultra-High-Precision Magnetic Abrasive Finishing for Wire Material Using a Rotating Magnetic Field." Materials 12, no. 2: 312.
Experiments were conducted to evaluate the effect of temperature during magnetic abrasive finishing of Mg alloy bars. A magnetic abrasive finishing process is an unconventional finishing technique that has been used to achieve high-quality surfaces with dimensional accuracy. In this study, a Mg alloy bar, which is widely used in automobiles, aircraft, IT, and the defense industry, was chosen as a cylindrical workpiece. The workpiece was then finished with a magnetic abrasive finishing process at three different temperatures, i.e., a cryogenic temperature, room temperature, and high temperature. In the cryogenic temperature condition, liquid nitrogen and argon gas were used as the cryogenic cooling gases in the finishing process; the results from this treatment were compared with those obtained at room temperature and high temperature conditions. At the room temperature condition, the finishing process of the cylindrical workpiece was performed at 24 °C. To carry out the high temperature condition, a hot air dryer was used to maintain a finishing temperature of 112 °C. The experimental results show that the room and cryogenic temperatures could yield excellent performance in terms of the surface roughness. However, in terms of the removal weight and change in diameter, the high temperature condition was found to be superior. In the present research, the improvements of the surface roughness (Ra) at room temperature (24 °C) and cryogenic temperature (-120 °C) conditions were 84.21 % and 55 %, respectively.
Rui Wang; Joo Hyun Park; Lida Heng; Yonjig Kim; Jin Yong Jeong; Sang Don Mun. Effect of temperature on the magnetic abrasive finishing process of Mg alloy bars. Journal of Mechanical Science and Technology 2018, 32, 2227 -2235.
AMA StyleRui Wang, Joo Hyun Park, Lida Heng, Yonjig Kim, Jin Yong Jeong, Sang Don Mun. Effect of temperature on the magnetic abrasive finishing process of Mg alloy bars. Journal of Mechanical Science and Technology. 2018; 32 (5):2227-2235.
Chicago/Turabian StyleRui Wang; Joo Hyun Park; Lida Heng; Yonjig Kim; Jin Yong Jeong; Sang Don Mun. 2018. "Effect of temperature on the magnetic abrasive finishing process of Mg alloy bars." Journal of Mechanical Science and Technology 32, no. 5: 2227-2235.
This research proposes an optimized magnetic abrasive machining process that uses an ultra-high-speed system to perform precision machining on a workpiece. The system can process several microns of material, either for machining surface roughness or for machining a workpiece for a precise micro-diameter. The stainless steel workpieces have been machined using an ultra-high-speed magnetic abrasive machining (UHSMAM) process. The experiments were performed analyzing the accuracy of the machined workpiece diameter, using response surface methodology. The results obtained after machining have been analyzed to determine the effect of different process parameters such as machining speed, machining time, machining frequencies, inert gas in/out, magnetic pole types, and magnetic abrasive mesh size for the individual workpiece, as well as to study various interaction effects that may significantly affect the machining performance of the process. The obtained outcomes of the analysis for different workpieces have been critically compared to understand the effect of the considered process parameters based on the resulting mechanical properties. Regression analysis was used to confirm the stability of the micro-diameter and the processing efficiency. Atomic force microscope (AFM) micrographs were also obtained to study the surface morphology of the precision-machined workpiece.
Rui Wang; Pyo Lim; Lida Heng; Sang Don Mun. Magnetic Abrasive Machining of Difficult-to-Cut Materials for Ultra-High-Speed Machining of AISI 304 Bars. Materials 2017, 10, 1029 .
AMA StyleRui Wang, Pyo Lim, Lida Heng, Sang Don Mun. Magnetic Abrasive Machining of Difficult-to-Cut Materials for Ultra-High-Speed Machining of AISI 304 Bars. Materials. 2017; 10 (9):1029.
Chicago/Turabian StyleRui Wang; Pyo Lim; Lida Heng; Sang Don Mun. 2017. "Magnetic Abrasive Machining of Difficult-to-Cut Materials for Ultra-High-Speed Machining of AISI 304 Bars." Materials 10, no. 9: 1029.
Magnetic abrasive machining (MAM) is a machining technique in which magnetic fields are used to control abrasive tools during the machining process of a material. Due to the development of engineering technologies, various properties such as surface accuracy, dimensional accuracy, and lightweight materials are required in current engineering applications. This study proposes the development of a new ultra-high-speed magnetic abrasive machining technique with the goal of improving the dimensional accuracy, surface accuracy and weight of a material. Moreover, to reduce machining time, this machining method was developed using an ultra-high-speed spindle, capable of rotating up to 80000 rpm. In this study, Ti-6Al-4V (Eli) bars were used as cylindrical workpieces and were machined via magnetic abrasive machining processes with an ultra-high-speed spindle. Results showed that improvements in the diameter and quantity of removed material were the highest at an operational speed of 80000 rpm, followed by 40000 rpm, 20000 rpm and 2000 rpm. The initial surface roughness of 0.21 μm Ra was improved to 0.04 μm Ra at 80000 rpm for 75 seconds. To evaluate the machining capabilities of the ultra-high-speed MAM process in terms of surface roughness, a descriptive statistical method was used. Precision weight data, laser scan micrometer data, roundness data, surface roughness data, and AFM images of the machined surface were recorded and studied.
Rui Wang; Pyo Lim; Lida Heng; Min Soo Kim; Sang Don Mun. Characteristics of ultra-high-speed micro processing machines using magnetic abrasive machining methods. Journal of Mechanical Science and Technology 2016, 30, 4687 -4695.
AMA StyleRui Wang, Pyo Lim, Lida Heng, Min Soo Kim, Sang Don Mun. Characteristics of ultra-high-speed micro processing machines using magnetic abrasive machining methods. Journal of Mechanical Science and Technology. 2016; 30 (10):4687-4695.
Chicago/Turabian StyleRui Wang; Pyo Lim; Lida Heng; Min Soo Kim; Sang Don Mun. 2016. "Characteristics of ultra-high-speed micro processing machines using magnetic abrasive machining methods." Journal of Mechanical Science and Technology 30, no. 10: 4687-4695.
The Magnetic abrasive finishing (MAF) process is a surface finishing technique in which a magnetic field is used to control abrasive particles during surface finishing of a material. Because smooth surfaces are required for general use, the magnetic abrasive finishing process was developed for finishing surfaces. We studied the effect of CNT particles on the surface roughness of a workpiece. Magnesium alloy bars were used as the cylindrical workpiece and were finished using an MAF process at high workpiece revolution speeds of 1000, 5000, 10000 and 25000 rpm; diamond pastes with diameters of 0.5, 1, and 3 μm were used for comparison. The best value for surface roughness was equivalent to treatment at 0.02 μm when 0.01 g of CNT particles was mixed together with the unbonded magnetic abrasive at 25000 rpm for 20 seconds. CNT particles were applied to the finishing process to improve the surface roughness of the material, because they have many advantageous properties such as very high strength, light weight, elasticity, and high thermal and air stability. CNT particles are particularly effective for the improvement of Mg alloy bar surface roughness in the MAF process.
Lida Heng; Gyun Eui Yang; Rui Wang; Min Soo Kim; Sang Don Mun. Effect of carbon nano tube (CNT) particles in magnetic abrasive finishing of Mg alloy bars. Journal of Mechanical Science and Technology 2015, 29, 5325 -5333.
AMA StyleLida Heng, Gyun Eui Yang, Rui Wang, Min Soo Kim, Sang Don Mun. Effect of carbon nano tube (CNT) particles in magnetic abrasive finishing of Mg alloy bars. Journal of Mechanical Science and Technology. 2015; 29 (12):5325-5333.
Chicago/Turabian StyleLida Heng; Gyun Eui Yang; Rui Wang; Min Soo Kim; Sang Don Mun. 2015. "Effect of carbon nano tube (CNT) particles in magnetic abrasive finishing of Mg alloy bars." Journal of Mechanical Science and Technology 29, no. 12: 5325-5333.
In this study, a magnetic pole vibration device that uses a proximity sensor for magnetic abrasive finishing equipment using a permanent magnet was developed, and the performance of this system was proved, focusing on how the surface roughness of STS 304 pipes is affected by the magnetic pole arrangement. The results of this study confirm that the resulting magnetic fields of different magnetic pole arrangements change the behavior of the magnetic abrasive mixture, thus impacting the abrasion effect. Among the four different pole arrangements investigated, the M-S-N magnetic pole arrangement provides the best surface finish. A mixture of iron particles and magnetic abrasive materials in a 3 to 1 ratio is found to be the most advantageous in terms of surface roughness and material removal rate. In addition, the wet processing, in which light oil is added to the magnetic abrasion mixture, is more effective than the dry processing. Finally, the effect of the spindle speed was also investigated for speeds from 200 to 1,400 rpm. At 1,400 rpm, the surface roughness shows approximately 76.1% improvement over that at 200 rpm.
Sung Yoon; Juei-Feng Tu; Jun Ho Lee; Gyun Eui Yang; Sang Don Mun. Effect of the magnetic pole arrangement on the surface roughness of STS 304 by magnetic abrasive machining. International Journal of Precision Engineering and Manufacturing 2014, 15, 1275 -1281.
AMA StyleSung Yoon, Juei-Feng Tu, Jun Ho Lee, Gyun Eui Yang, Sang Don Mun. Effect of the magnetic pole arrangement on the surface roughness of STS 304 by magnetic abrasive machining. International Journal of Precision Engineering and Manufacturing. 2014; 15 (7):1275-1281.
Chicago/Turabian StyleSung Yoon; Juei-Feng Tu; Jun Ho Lee; Gyun Eui Yang; Sang Don Mun. 2014. "Effect of the magnetic pole arrangement on the surface roughness of STS 304 by magnetic abrasive machining." International Journal of Precision Engineering and Manufacturing 15, no. 7: 1275-1281.