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Copy of SEMINAR ON MAGNETIC ABRASIVE FINISHING

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Transcript of Copy of SEMINAR ON MAGNETIC ABRASIVE FINISHING

SEMINAR ON MAGNETIC ABRASIVE FINISHING

CONTENTS
Introduction
Process principle
Types of MAF
Applications of MAF
Literature review
Research gaps and Opportunities
Proposed plan of work
Progress in work
References

SEMINAR ON MAGNETIC ABRASIVE FINISHING
PREPARED BY :-
AMIT RAINA
M.TECH (3rdSEM )
E.NO. 12540003



UNDER THE GUIDANCE OF – DR. AKSHAY DVIVEDI&
DR. RAHUL S. MULIK
Introduction
INTRODUCTION CONTINUED
Magnetic Abrasive Finishing (MAF) is the process which is capable of precision finishing of such work pieces.

Since MAF does not require direct contact with the tool, the particles can be introduced into areas which are hard to reach by conventional techniques.

MAP’s suitability for newly developed and wide-application non ferrous and composite materials has not to be determined clearly yet, thus further study is essential.

With that goal in sight, the present study we will test the MAP process with an non ferrous material Inconel 718 alloy.

Traditionally finishing processes are crucial, expensive, uncontrollable and a labor intensive phase in the overall production
It also contributes significantly to the total production time and cost. 
The ever increasing demand from industry for better quality & cost competitive products with complex designs & superior materials needs a well - suited finishing process.
The application of magnetic field in the control of manufacturing process has become an area of interest.
In case of a flat large size work piece made of hard-to-machine material, the traditional finishing processes do not qualify to give nano level surface finish.

Process principle
MAF is a process in which a mixture of non-ferromagnetic abrasives and ferromagnetic iron particles is taken and magnetically energized using a magnetic field.

The work piece is kept between the two poles (N and S pole) of a magnet.

Fig . Maf [V.K. Jain (2009)]
The working gap between the workpiece and the magnet is filled with magnetic abrasive particles (MAPs)
Map’s can be used as bonded or unbonded.
The magnetic abrasive particles join each other along the lines of magnetic force and form a flexible magnetic abrasive brush (FMAB).
This brush behaves like a multi-point cutting tool for the finishing operation.

Fig. Schematic view of a bonded magnetic abrasive particle[S.C. Jayswal ,etal(2005)]

Types of maf process
External surface magnetic finishing

Schematic view of external surface magnetic finishing,[T. Shinmura(1990)]

Plane (flat) surface magnetic abrasive finishing

Schematic view of plane (flat) magnetic abrasive finishing, [M.G.Patil (2012)]

Applications of maf process
Aerospace
Medical
Electronics
Precision dies
Automobile
Moulds as a part of their manufacturing activities

LITREATURE REVIEW
WORKPIECE MATERIAL : INCONEL 718
INCONEL 718
alloy is a high-strength, corrosion-resistant nickel chromium material and having high creep-rupture strength at high temperatures to about 700°C (1290°F)
Common Applications:
Aerospace, gas turbines, rocket motors, spacecraft, space shuttles, nuclear reactors, pumps, turbo pump seals, and tooling. 
Hardness:
225 BHN to 277 BHN 
Density:
8.19 g/cm3 
Melting Range:
1210-1344° C 
Magnetic Permeability:
1.0011 (Since, permeability is >1 , so it is paramagnetic in nature)
Co-Efficient of Expansion:
13.0 µm/m.°C

Research gaps and Opportunities

Inconel has a wide number of applications in the presentworld so it is an area of research
to work on .
MAF can be a promising finishing process for Inconel as finishing forces during MAF are relatively less.
Most of the maf work is done on stainless steel so work on inconel 718 wiil be a good area to work on as it is hard then steel
In most maf operations bonded abrasives are used very little work is done using unbonded abrasives

PROPOSED PLAN OF WORK
Objective of the project

1) Develop a set up for plane surface
magnetic abrasive finishing of
Inconel 718 workpiece.

2) Parametric analysis of various
process parameters in Magnetic
Abrasive Finishing.
 


Input process parameters:

1)Rotational speed of top magnet
2)Working gap between the upper magnet
and work piece
3)Mesh size of abrasive
4)Abrasive concentration

Output parameters:-

1) Surface roughness (Ra)
2) Material removal (MR)

Facilities required for the output parameters:-
 
1) Surface roughness tester
2) SEM


PROGRESS IN WORK
1) Literature review is done
2) Material purchased for set up and
experimentation
3) Process variables have been
decided.
4) Primary set up is been developed
in which permanent magnets are
used
5) They arearranged top and bottom
of the workpiece

Schematic of the setup to be developed[Tae-Wan Kim(2010)]
1.T. Mori, K. Hirota, Y. Kawashima, Clarification of magnetic abrasive finishing mechanism, Journal of Materials Processing Technology 143–144 (2003) 682–686

2.Dhirendra K. Singh1, V.K. Jain∗, V. Raghuram, Parametric study of magnetic abrasive finishing process, Journal of Materials Processing Technology 149 (2004) 22–29

3.T. Shinmura, Utsunomiya University; K. Takazawa, Kanagawa Institute of Technology; E. Hatano, M. Matsunaga, Study on Magnetic Abrasive Finishing, Toyo-kenmazai Co./Japan - Submitted by T. Matsuo

4.S.C. Jayswal · V.K. Jain · P.M. Dixit, Modeling and simulation of magnetic abrasive finishing process, Int J Adv Manuf Technol (2005) 26: 477–490

5.Shaohui Yin , Takeo Shinmura , Vertical vibration-assisted magnetic abrasive finishing and deburring for magnesium alloy, International Journal of Machine Tools & Manufacture 44 (2004) 1297–1303

6. Amit M. Wani, Vinod Yadava , Atul Khatri, Simulation for the prediction of surface roughness in magnetic abrasive flow finishing (MAFF), Journal of Materials Processing Technology 190
(2007) 282–290
 
7. V.K. Jain , Magnetic field assisted abrasive based micro-/nano-finishing , JournaL of Materials Processing Technology 209 (2009) 6022–6038
 
8. A.C.Wang , S.J.Lee, Study the characteristics of magnetic finishing with geL abrasive ,International Journal of Machine Tools & Manufacture 49 (2009) 1063– 1069
 
9. Tae-Wan Kim, Dae-Min Kang and Jae-Seob Kwak ,Application of magnetic abrasive polishing to composite materials, Journal of Mechanical Science and
Technology 24 (5) (2010) 1029~1034

10.  Jae-Seob Kwak , Enhanced magnetic abrasive polishing of non-ferrous metals utilizing a permanent magnet, International
Journal of Machine Tools & Manufacture49(2009)613–618

11. INCONEL® alloy 718, www.specialmetals.com.

12. Inconel 718 – Composition, Properties and Applications of Inconel 718 Nickel-Chromium Alloy by Alloy Wire International
 
13. Shinmura, T., 1987. Study on magnetic abrasive finishing-characteristics of finished surface. Journal of Japan Society of Precision Engineering 53 (11) 1791–1793
 
14. Kremen, G.Z., 1994. Machining time estimation for magnetic abrasive processes .International Journal of Production Research 32 (12), 2817–2825
 
15. M.G.Patil , K.Chandra, S.Misra, Magnetic Abrasive Finishing – A Review,Advanced Materials Research Vols. 418-420 (2012) pp 1577-1581

 

THANK YOU
REFERENCES
Gantt chart
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