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TECHNICAL PAPERS

High Speed Grinding of Silicon Nitride With Electroplated Diamond Wheels, Part 1: Wear and Wheel Life

[+] Author and Article Information
T. W. Hwang, C. J. Evans, E. P. Whitenton

Manufacturing Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899

S. Malkin

Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA 01003

J. Manuf. Sci. Eng 122(1), 32-41 (Jun 01, 1999) (10 pages) doi:10.1115/1.538908 History: Received December 01, 1998; Revised June 01, 1999
Copyright © 2000 by ASME
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References

Figures

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Machine (spindle) power versus wheel velocity
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Grinding power per unit width versus grinding time: (a) wheel I (a=50.8 μm, vw=63.5 mm/s, vs=85 m/s); (b) wheels II and III (a=50.8 μm, vw=63.5 mm/s, vs=149 m/s); (c) wheel IV (a=25.4 μm, vw=127 mm/s, vs=149 m/s); (d) grinding power per unit width due to abrasive–workpiece interactions versus grinding time from (a)–(c)
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Ground surfaces at various grinding times (wheel I, a=50.8 μm, vw=63.5 mm/s, vs=85 m/s): (a) t=264 s; (b) t=1048 s; (c) t=1520 s
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Ground surfaces at various grinding times (wheel II, a=50.8 μm, vw=63.5 mm/s, vs=149 m/s): (a) t=514 s; (b) t=976 s; (c) t=1269 s
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Plot of normal force per unit width at a grinding time of 1300 s
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SEM micrographs of surface (wheel II, a=50.8 μm,vw=63.5 mm/s,vs=149 m/s,t=1269 s): (a) 200×; (b) 500×
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Isolated SEM micrographs of wear flats (wheel II, a=50.8 μm,vw=63.5 mm/s,vs=149 m/s,t=1269 s): (a) 1500×; (b) 1500×
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Optical micrographs of isolated wear flats (wheel II, a=50.8 μm,vw=63.5 mm/s,vs=149 m/s,t=1269 s): (a) 400×; (b) 1000×, (c) 1000×
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Accumulated radial wheel wear versus accumulated grinding time
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Accumulated grinding ratio (G ratio) versus accumulated grinding time
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Wear depth w versus sliding length per unit volumetric removal rate per unit width Ls
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Surface roughness versus (a) normal force per unit width and (b) power per unit width
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Surface roughness of ground specimen versus grinding time
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Schematic illustration of experimental method
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Normal grinding force per unit width versus grinding time: (a) wheel I (a=50.8 μm, vw=63.5 mm/s, vs=85 m/s); (b) wheels II and III (a=50.8 μm, vw=63.5 mm/s, vs=149 m/s); (c) wheel IV (a=25.4 μm, vw=127 mm/s, vs=149 m/s); (d) normal force per unit width due to abrasive–workpiece interactions versus grinding time taken from (a)–(c)
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Surface profiles of ground specimens at various grinding times (wheel I, a=50.8 μm,vw=63.5 mm/s,vs=85 m/s)

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