Mathematical models for bit life of polycrystalline diamond compact (PDC) drill bits were developed for drilling small holes in hard abrasive media. Based on the wear-out criterion of an average 0.060 in. (1.5 mm) flank wear land, bit life equations were formulated in three forms: bit life versus rotary speed and feed rate, bit life versus rotary speed and penetration rate, and wear rate versus cutting speed and cutter engagement area. The traditional linear-logarithmic model proved inadequate to describe bit life, whereas the quadratic-logarithmic model provided the best bit life prediction equation. Consequently, it would be possible to predict the optimum economical drilling conditions more accurately by employing a quadratic-logarithmic based bit life equation. The equation demonstrated the ability to predict the bit life precisely under different modes of wear.
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December 1986
Research Papers
Life Models for Small-Diameter Polycrystalline Diamond Compact Bits in Hard Abrasive Media
C. L. Hough, Jr.,
C. L. Hough, Jr.
Department of Mechanical Engineering, Texas A & M University, College Station, Tex. 77843
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B. Das,
B. Das
Department of Industrial Engineering, Technical University of Nova Scotia, Halifax, Nova Scotia, Canada
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T. G. Rozgonyi
T. G. Rozgonyi
Department of Mining Engineering, Texas A & M University, College Station, Tex. 77843
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C. L. Hough, Jr.
Department of Mechanical Engineering, Texas A & M University, College Station, Tex. 77843
B. Das
Department of Industrial Engineering, Technical University of Nova Scotia, Halifax, Nova Scotia, Canada
T. G. Rozgonyi
Department of Mining Engineering, Texas A & M University, College Station, Tex. 77843
J. Energy Resour. Technol. Dec 1986, 108(4): 310-314 (5 pages)
Published Online: December 1, 1986
Article history
Received:
June 4, 1985
Revised:
August 1, 1986
Online:
October 22, 2009
Citation
Hough, C. L., Jr., Das, B., and Rozgonyi, T. G. (December 1, 1986). "Life Models for Small-Diameter Polycrystalline Diamond Compact Bits in Hard Abrasive Media." ASME. J. Energy Resour. Technol. December 1986; 108(4): 310–314. https://doi.org/10.1115/1.3231282
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