In determining the various forces on the chip, Merchant assumed that the

  • ACutting edge of the tool is sharp and it does not make any flank contact with the workpiece
  • BOnly continuous chip without built-up-edge is produced
  • CCutting velocity remains constant
  • DAll of the above
Correct Answer : (D)

All of the above

Hints :

High speed steel tools retain their hardness up to a temperature of


For machining a mild steel work piece using carbide tool, the maximum material will be removed at a temperature of

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