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Materials Science and Manufacturing Engineering Miscellaneous

Materials Science and Manufacturing Engineering

  1. Tool life testing on a lathe under dry cutting conditions gauge n and C of Taylor tool life equation as 0.12 and 130 m/min. respectively. When a coolant was used, C increased by 10%. The increased tool life with the use of coolant at a cutting speed of 90 m/min is
    1. 47.4 min
    2. 37.4 min
    3. 27.4 min
    4. 17.4 min
Correct Option: A

n = 0.12, c = 130 m /min
C1 = 130 × 1.1 = 143 m/min
V1 = 90 m /min
V1T1n = C1
90(T1)n = 143

T1 =
143
1/0.12
90

T1 = 47.4min



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