Wear behavior of materials in magnetically assisted abrasive flow machining

Singh, Sehijpal; Shan, H. S.; Kumar, Pradeep

doi:10.1016/s0924-0136(02)00442-9

Cited by 68 publications

(34 citation statements)

References 7 publications

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“…The media viscosity and geometrical shape of the workpiece also affect the flow pattern. A number of studies [6,[8][9][10][11][12] have shown that abrasion is pronounced in some initial cycles, after which both material removal rate and improvement in surface roughness get stabilised. It has also been observed that the greater the reduction ratio, the more is the material removal from the workpiece for a specified number of cycles.…”

Section: Literature Surveymentioning

confidence: 99%

Enhancing AFM process productivity through improved fixturing

Walia

Shan

Kumar

2009

Int J Adv Manuf Technol

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Abrasive flow machining (AFM) is a nonconventional finishing process that deburrs and polishes by forcing an abrasive laden media across the workpiece surface. The process embraces a wide range of applications from critical aerospace and medical components to highproduction volumes of parts. One serious limitation of this process is its low productivity in terms of rate of improvement in surface roughness. Limited efforts have hitherto been directed towards enhancing the productivity of this process with regard to better quality of workpiece surface. This paper discusses improved fixturing as a technique for productivity enhancement in terms of surface roughness (R a ). A rotating centrifugal-force-generating (CFG) rod is used inside the cylindrical workpiece which provides the centrifugal force to the abrasive particles normal to the axis of workpiece. The effect of the key parameters on the performance of process has been studied. The results shows that for a given improvement in R a value, the processing time can be reduced by as much as 70-80%. It is seen that the significant process parameters are revolutions per minute of CFG rod, extrusion pressure and abrasive mesh size.

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Section: Literature Surveymentioning

confidence: 99%

Enhancing AFM process productivity through improved fixturing

Walia

Shan

Kumar

2009

Int J Adv Manuf Technol

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“…Hence, search for economical, environmental friendly and efficient process is still on; -MRAFF process can't finish surfaces which have sharp edges because up and down motion of the MR fluid take away sharp edges first and destroy the shape of workpiece [15]. Finishing of spherical surfaces is also not possible by MAAF process; these MAAF processes are good for finishing the ferrous material, their rate of finishing decreases when we finish the non-ferrous materials [12]. Owing to low relative permeability of non ferrous materials as compared to ferrous materials, it is still a difficult job.…”

Section: Research Challenges Of Maafmentioning

confidence: 99%

“…The nature and strength of bonding material used to hold the abrasive particles together determine the extent of abrasion and quality of the finished surface. Advanced fine finishing processes in which efforts were made to precisely control the abrading forces are magnetic abrasive finishing (MAF) [12], magnetorheological abrasive honing (MRAH) [13], magnetorheological finishing (MRF), magnetorheological jet finishing (MRJF) [14], magnetorheological abrasive flow finishing (MRAFF) [15]. In MAF, MFP, MRAFF and MRJF, the magnetic field is used to control the abrading forces.…”

Section: Introductionmentioning

confidence: 99%

A review on magnetically assisted abrasive finishing and their critical process parameters

Kumari

Chak

2018

Manufacturing Rev.

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Magnetically assisted abrasive finishing (MAAF) processes are the precision material removal processes that have been applied to a large variety of materials from brittle to ductile and from magnetic to non magnetic. The MAAF process relies on a unique “smart fluid”, known as Magnetorheological (MR) fluid. MR fluids are suspensions of micron sized magnetizable particles such as carbonyl iron, dispersed in a non-magnetic carrier medium like silicone oil, mineral oil or water. The MAAF processes overcome the limitation of abrasive flow machining by deterministically control the abrading forces by applying magnetic field around the workpiece. MAAF process is divided into two parts; one is magnetorheological finishing (MRF) and another is magnetorheological abrasive flow finishing (MRAFF). The MRAFF process gives better results as compared to results of MRF because it has additional reciprocating motion of MR fluid. In this article the attempt has been made to review various technical papers related to MRF and MRAFF. The experimental setups, process parameters, MR fluid, modeling & optimization and applications are discussed in this paper. This review article will be useful to academicians, researchers and practitioners as it comprises significant knowledge pertaining to MAAF.

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“…The numerical simulation of viscous flow has been the topic of many researchers. The flow-formulation approach has presented in forming and extrusion, investigating two techniques, the pressure-velocity formulation with Lagrangian constraints and the penalty function approach [10].…”

Section: Introductionmentioning

confidence: 99%

Statistical Evaluation of Surface Roughness in Abrasive Flow Machining Process

Kohail

Mandy

Ahmed

2011

International Conference on Aerospace Sciences and Aviation Tec

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Abrasive flow machining (AFM) process is used in a wide range of applications to deburr, polish, radius edges, remove recast layers, and produce compressive residual stresses on the surface.The aim of the present work is to study the effects of the different process parameters, such as machining time, concentration and mesh size of abrasive, as well as media flow speed ... etc. on the produced surface roughness. A mathematical model to evaluate surface roughness has been presented using experimental design. This model is can be used for the prediction of the surface roughness. Comparisons between experimental and theoretical results are also presented.

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Wear behavior of materials in magnetically assisted abrasive flow machining

Cited by 68 publications

References 7 publications

Enhancing AFM process productivity through improved fixturing

Enhancing AFM process productivity through improved fixturing

A review on magnetically assisted abrasive finishing and their critical process parameters

Statistical Evaluation of Surface Roughness in Abrasive Flow Machining Process

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