0 votes
0 votes

During the turning of a $20$ mm- diameter steel bar at a spindle speed of $400$ rpm, a tool life of $20$ minute is obtained. When the same bar is turned at $200$ rpm, the tool life becomes $60$ minute. Assume that Taylor's tool life equation is valid. When the bar is turned at $300$ rpm, the tool life (in minute) is approximately.

  1. $25$
  2. $32$
  3. $40$
  4. $50$
in Materials, Manufacturing and Industrial Engineering recategorized by
by
27.4k points

Please log in or register to answer this question.

Answer:

Related questions