Magnetorheological finishing (MRF) is a precision optical finishing process traditionally limited to processing only nonmagnetic materials, e.g., optical glasses, ceramics, polymers, and metals. Here we demonstrate that MRF can be used for material removal from magnetic material surfaces. Our approach is to place an MRF spot on machined surfaces of magnetic WC-Co materials. The resulting surface roughness is comparable to that produced on nonmagnetic materials. This spotting technique may be used to evaluate the depth of subsurface damage, or deformed layer, induced by earlier manufacturing steps, such as grinding and lapping.
Issue Section:
Technical Briefs
Keywords:
tungsten carbide,
magnetorheological finishing,
deformed surface layer,
subsurface damage,
magnetic materials,
magnetorheology,
intelligent materials,
magnetic materials,
surface finishing,
grinding,
lapping (machining),
surface roughness,
tungsten compounds,
cobalt
Topics:
Damage,
Finishing,
Grinding,
Magnetic materials,
Surface roughness,
Cobalt,
Tungsten,
Optical glass
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.Copyright © 2007
by American Society of Mechanical Engineers
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