MAGNETO ABRASIVE FLOW MACHINING

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MAGNETO ABRASIVE FLOW MACHINING

• SEMINAR BY
• SANTOSH BELLIKATTI
• USN 2GI02ME024
• BATCH NO 12

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INTRODUCTION

• What is Magneto Abrasive Flow Machining?
• Magnetic abrasives are emerging as
  important finishing methods for metals and
  ceramics.
• Extrude Hone Corporation, USA, originally
  developed the AFM process in 1966.
• Modeling of surface generation and process
  monitoring of AFM was conducted by Williams and
  Rajurkar during the late 1980s

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PRINCIPLE
a) Off-state MR fluid particles (b)
Aligning in an applied magnetic field
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TYPES OF MACHINES
One-way machines medium chamber adapted to
receive and extrude medium unidirectionally
across the internal surfaces of a work piece
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• Two-way machines
• The medium is extruded,
• hydraulically or mechanically,
• from the filled chamber to the
• empty chamber via the
• restricted passageway through
• or past the work piece surface to be abraded.

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Orbital Machines
Orbital MAFM Process
In orbital MAFM, the work piece is precisely
oscillated in two or three dimensions
Before start of finishing
Orbital MAFM concept is to provide transitional
motion to the work piece


While finishing
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PROCESS PARAMETERS

• 1. Flow rate (volume) of the medium.
• 2. Magnetic flux density.
• 3. Number of cycles.
• 4. Extrusion pressure.
• 5. Viscosity of the medium.
• 6. Grain size and concentration of the abrasive.
• 7. Work piece material.
• 8. Flow volume of the medium.

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ADVANTAGES

• A very high volume of internal deburring is
  possible.
• MAFM deburrs precision gears.
• MAFM polishes internal and external features of
  various components.
• MAFM removes recast layer from components.
• Effective on all metallic materials.
• Controllability, repeatability and cost
  effectiveness.
• Less Time Consumption.

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LIMITATIONS

• Abrasive materials tend to get embedded, if the
  work material is ductile.
• Require closed environment.
• Require start up hole.

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APPLICATIONS

• Automotives
• Medical implants
• Manufacturing industries

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REFERENCES

• V.K. Jain - Advanced (Non-traditional) Machining
  Processes (e-book)
• http//masters.donntu.edu.ua/2010/fimm/kondratenko
  /library/article9.htm
• http//www.sciencedirect.com/science