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Author Question: Which of the following is the correct RPM for drilling a 1.000 inch diameter hole in SAE 4140 if the ... (Read 23 times)

mikaylakyoung

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on: Jul 26, 2018
Which of the following is the correct RPM for drilling a 1.000 inch diameter hole in SAE 4140 if the CS is 50 SFPM?
 
  A) 25 B) 160 C) 250 D) 1600

Question 2

Which cutting fluid would be be best for reaming or tapping low carbon steel?
 
  A) Kerosene B) Lubricating oil C) Soluble oil D) Sulfurized oil


Brummell1998

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Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

D


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