Q17
For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
A.
5 m/min
B.
10 m/min
C.
15 m/min
D.
30 m/min
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is 22 m/min and for a mild steel is 30 m/min