Rapid magneto-rheological finishing of Ti-6Al-4V for aerospace components

Satō, Takashi; Kum, Chun Wai; Venkatesh, V.C.

doi:10.1504/ijnm.2013.057590

Cited by 13 publications

(8 citation statements)

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“…It was observed that the final roughness of the external surface was not uniform and dependent on the angle between the tool and the normal of the surface. The inability to obtain a uniform change in surface texture without tilting the tool to follow the workpiece surface is consistent with initial observations made for the new process to be developed in this thesis [39].…”

Section: Ball End Magnetorheological Finishing (Bemrf)supporting

confidence: 84%

Process and media development of an MR fluid-based finishing for high efficiency material removal

Kum¹

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I am also very thankful and blessed to have met Gerald Fong Weng Seng and Mark Tan, who were MTG colleagues and 'buddies' during my early days in SIMTech. Both of them have since left SIMTech to explore other avenues in life. To this day, I am extremely grateful that both of you have faith and confidence in my ability to complete my Ph.D. research by agreeing to be my guarantors for the scholarship, despite our relatively short acquiescence. It is a touching gesture that will never be forgotten. Lastly, but definitely not the least, the deepest gratitude is reserved for my other significant half, who is the most important person in my life. Thank you for being the copilot during my most emotional journey in my life so far, for the endless emotional support, for the loving care and for the wonderful companionship. I look forward to writing many more chapters with you in the future, together. This thesis is dedicated to you.

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Section: Ball End Magnetorheological Finishing (Bemrf)supporting

confidence: 84%

Process and media development of an MR fluid-based finishing for high efficiency material removal

Kum¹

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“…Lastly, the abrasives are assumed to occupy the interstitial spaces in the carbonyl iron network without compromising the FCC configuration of the network. For the last assumption to be valid, the abrasive size must adhere to the abrasive size criterion, which is a condition typical to magnetic finishing processes [4,5,14]:…”

Section: Materials Removal Rate Model 21 Assumptionsmentioning

confidence: 99%

“…The most well-known is arguably the Magnetorheological Finishing (MRF) process, which is commercially available for superfinishing of high-value optics components [1]. Other MFAF processes include the magnetic abrasive finishing (MAF) process [2], an apparatus for finishing of ground glass edge [3], a double-magnet configuration for high material removal rate [4,5] that can also be mounted on a robotic arm [6], an apparatus for finishing of internal surface of tubes [7], an apparatus for finishing of micropore X-ray focusing mirrors [8], and a ball-end tool [9].…”

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confidence: 99%

“…The simulated value of magnetic flux density at the polishing spot (centre position, 1 mm away from the magnets) is 0.637 T. Measurement with a gaussmeter gave an averaged value within 0.05 T. Both of these factors result in a relatively high material removal rate for this MFAF process. The principles of the process and itscharacteristics have been reported in detail elsewhere[4]. For experiments, polishing is done at a single spot without any tool feed for a duration of 5 minutes for each condition.…”

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confidence: 99%

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A novel media properties-based material removal rate model for magnetic field-assisted finishing

Kum¹,

Satō²,

Guo³

et al. 2018

International Journal of Mechanical Sciences

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Magnetic field assisted finishing (MFAF) is a category of non-conventional finishing processes that use magnetic field to manipulate finishing media typically consisting of magnetic particles and non-magnetic abrasives suspended in a carrier fluid. In order to better control the process, an improved understanding of the actual removal process is needed. This paper will introduce a new material removal rate model for magnetic fieldassisted finishing (MFAF) that will aim do so. The model considers the complexity of finishing media used in MFAF processes, where two different types of particles are presented and interact with each other. The proposed material removal rate expression is based on contact mechanics and is a function of the number of active magnetic particles, number of active abrasives, force per magnetic particle, and force per abrasive. Expressions for particle numbers have been developed by considering an ideal facecentred cubic configuration for the magnetic particle network, while expressions for forces have been developed based on a proposed framework for the particle interactions. The model has been verified experimentally for a double-magnet MFAF process by varying the abrasive size and abrasive concentration. When the abrasive size was increased from 0.6 μm to 15 μm, the material removal rate decreased which is consistent 2 with the theoretical trend given by the model. Then, when abrasive concentration, given by the abrasives-to-carbonyl-iron volumetric ratio, was increased from 0 to 0.768, the material removal rate initially increased and then reached a maximum when the volume ratio is 0.259 before decreasing with further increase of the volume ratio. This is also in agreement with the theoretical trend given by the model.

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“…Magnetic field-assisted finishing can smooth surfaces [ 8 , 9 ], deburr workpiece edges [ 10 , 11 ], and alter surface hydrodynamic properties (e.g., wettability [ 12 ] and adhesion [ 13 ]), tribological properties (e.g., wear [ 14 , 15 ] and friction [ 16 ]), and optical properties [ 17 ]. It has been successfully applied in aerospace [ 18 , 19 ], electronics [ 20 ], textile [ 21 ], military [ 22 ], cosmetics [ 23 ], and the optics industry [ 24 ], improving product longevity and functionality.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field-assisted finishing processes: from bibliometric analysis to future trends

Souza

Silva

Ratay

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

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The need for ultraprecision finishing has grown, and magnetic field-assisted finishing has shown potential for overcoming some challenges. This study evaluates the scientific production and identifies future directions of magnetic field-assisted finishing based on a bibliometric analysis. Using Bibliometrix, network mapping and descriptive analysis were performed on 1558 documents related to magnetic field-assisted finishing-related research published over the past 51 years. The results of the comprehensive literature reviewed showed that the theme exhibits a rising trend of 56% in the last 10 years, being mainly conducted by Chinese, Indian, and American researchers. Different geometries and materials can be finished and which had surface roughness ranges from sub-nanometer- to micrometer-scale. Surface finishing of freeform dies and molds, optical components, and medical devices have been standing out as current process applications in tooling, aerospace, and biomedical industries. AISI 304 stainless steel was the most tested metal. Finally, potential areas of research were identified in the coming years, which could lead to new fields of application for magnetic field-assisted finishing in industry.

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Rapid magneto-rheological finishing of Ti-6Al-4V for aerospace components

Cited by 13 publications

References 0 publications

Process and media development of an MR fluid-based finishing for high efficiency material removal

Process and media development of an MR fluid-based finishing for high efficiency material removal

A novel media properties-based material removal rate model for magnetic field-assisted finishing

Magnetic field-assisted finishing processes: from bibliometric analysis to future trends

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