Study of Surface Finishing Process using Magneto-rheological Fluid (MRF)

Yamaguchi, Hitomi; Shinmura, Takeo; Satō, Takashi; Taniguchi, Akira; Tomura, Takuya

doi:10.2493/jspe.72.100

Cited by 4 publications

(9 citation statements)

References 4 publications

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“…In the conventional method, used the silicon oil as the base slurry of MRF [3], detergency is bad although machining performance is good. Comparison with conventional method, in this method, we used the ordinary oily grinding lubricant as base slurry, good detergency and machining performance was acquired, and it can be cleaned in alcohol.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, although the high speed slurry flow finishing process [1] and magnetic fluid (MF) finishing prcess [2] were proposed until now, there are problems in finishing force and finishing efficiency. Moreover, an internal magnetic field assisted finishing with MRF (Magneto-rheological Fluid)-based slurry [3] was also proposed. In that process, an ultra-precision surface can be obtained, but detergency worsens because a special base slurry was used.…”

Section: Introductionmentioning

confidence: 99%

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Development of a New Ultra-Precision Magnetic Abrasive Finishing Process

Zou

Shinmura

2012

KEM

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To obtain an ultra-precision surface, this research developed a new type of magnetic finishing tool, “Ultra-precision Magnetic Abrasive Slurry”, for a magnetic field assisted internal finishing process. This ultra-precision magnetic abrasive slurry is made to mix simply the super-minute abrasive grains, super-minute globular iron particles, and oily grinding liquid. When the internal finishing was executed, the automatic mixing phenomenon of the Ultra-precision Magnetic Abrasive Slurry is caused, at the same time, super-minute abrasive grains and minute iron particles were uniformly distributed to the magnetic abrasive slurry. It was confirmed that a smooth mirror internal finishing for a SUS304 stainless steel tube is able to be achieved, by using the Ultra-precision Magnetic Abrasive Slurry that consists of the globular carbonyl iron particles (6μm in mean diameter) and diamond grains (0.25~0.75μm in mean diameter) and the oily grinding liquid. In this study, we examined the influence that the rotational speed of the magnetic pole exerted on the finishing characteristic. The results showed that the ultra-precision surface is successfully made, and the surface roughness has been improved from 320nm Ra to 3.37nm Ra .

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a New Ultra-Precision Magnetic Abrasive Finishing Process

Zou

Shinmura

2012

KEM

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“…Presently, finishing using magnetic abrasive takes a remarkable role in the finishing of different mechanical parts, even in diminutive size parts and diverse geometries (Kumari, C. and Chak, SK., 2018). MAF was developed as a novel finishing technique in this decade, particularly for very delicate and responsive to instruments for optically, medically, engine parts, and electrical component manufacturing (Yamaguchi, H., 2006). MAF process amalgamate the magnetism properties of the ferromagnetic grains (e.g., Fe) and machining properties of the abrasive grains (e.g., Al2O3, SiC) to compose a malleable finish tool.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surface Roughness in Modern Finishing Process Using Permanent Magnet

Ahmed,

Jabbar

2023

kje

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This work introduces an investigation of the surface roughness (Ra) during flat plate machining utilizing magnetic abrasive finishing process (MAF). In this study three parameters (Machining time, Mesh size, and Gap) were studied. The MAF tool is made from permanent magnet and the abrasive powder is consisting of 40% of SiC and 60% Fe powder with three Mesh size (100, 250, and 400 µm). The Taguchi L9 array was used in designing the experiments. The results show that the increasing machining time caused a decrease in Ra. The increase in mesh size and the gap will increase the surface roughness. The dominant factor that affect the surface roughness was the machining time due to enough time to machine the target surface.

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“…In most of the machining processes for ultra-smooth surfaces applied in various fields such as optics, imaging, biomedical engineering, and the aerospace and automotive fields [ 1 , 2 ], polishing is usually required as a final and crucial step to remove defects and to smoothen the surfaces. Different kinds of polishing technologies have been developed, including ion beam finishing [ 3 ], bonnet polishing [ 4 ], fluid jet polishing [ 5 ], plasma finishing [ 6 ], magnetic field assisted finishing (MFAF) [ 7 ], etc. MFAF technology, being one of the most promising technologies in achieving ultra-smooth surface finishing, was first developed in the 1930s and has been widely researched and applied in various industries such as aerospace, biomedical, optics, etc.…”

Section: Introductionmentioning

confidence: 99%

“…MFAF technology, being one of the most promising technologies in achieving ultra-smooth surface finishing, was first developed in the 1930s and has been widely researched and applied in various industries such as aerospace, biomedical, optics, etc. [ 7 , 8 , 9 ]. This technology shows advantages over polishing difficult-to-access surface [ 10 ], freeform surface [ 11 ] and microstructures [ 12 ] due to its high flexibility and conformity to the workpiece shape.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Effect of Surface Shape and Orientation in Magnetic Field Assisted Mass Polishing

et al. 2022

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Magnetic field assisted finishing (MFAF) technology has been widely used in industries such as aerospace, biomedical, and the optical field for both external and internal surface finishing due to its high conformability to complex surfaces and nanometric surface finishing. However, most of the MFAF methods only allow polishing piece-by-piece, leading to high post-processing costs and long processing times with the increasing demand for high precision products. Hence, a magnetic field-assisted mass polishing (MAMP) method was recently proposed, and an experimental investigation on the effect of surface posture is presented in this paper. Two groups of experiments were conducted with different workpiece shapes, including the square bar and roller bar, to examine the effect of surface orientation and polishing performance on different regions. A simulation of magnetic field distribution and computational fluid dynamics was also performed to support the results. Experimental results show that areas near the chamber wall experience better polishing performance, and the surface parallel or inclined to polishing direction generally allows better shearing and thus higher polishing efficiency. Both types of workpiece show notable polishing performance where an 80% surface roughness improvement was achieved after 20-min of rough polishing and 20-min of fine polishing reaching approximately 20 nm.

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Study of Surface Finishing Process using Magneto-rheological Fluid (MRF)

Cited by 4 publications

References 4 publications

Development of a New Ultra-Precision Magnetic Abrasive Finishing Process

Development of a New Ultra-Precision Magnetic Abrasive Finishing Process

Investigation of Surface Roughness in Modern Finishing Process Using Permanent Magnet

Experimental Investigation on the Effect of Surface Shape and Orientation in Magnetic Field Assisted Mass Polishing

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