Mechanical Engineering - Production Engineering - Discussion

Discussion Forum : Production Engineering - Section 3 (Q.No. 22)
22.
The cutting speed for drilling copper with high speed steel drills varies from
10 to 20 m/min
18 to 30 m/min
24 to 45 m/min
60 to 90 m/min
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

S.B said:   5 years ago
The answer is correct.
60-70 m/min is milling speed not drilling.
20 m/min is drilling speed for copper.

Raja said:   5 years ago
60-70 m/min is the correct answer.

Gujaratkumar said:   6 years ago
Hello.

@Akhil,

How 60-70? Please explain it in detail.

AKHIL said:   9 years ago
The correct answer is 60-70. But it is not in the option.

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