Mechanical Engineering - Production Engineering - Discussion

Discussion Forum : Production Engineering - Section 2 (Q.No. 37)
37.
The cutting speed is minimum while machining __________ with a high speed steel tool.
cast iron
mild steel
brass
aluminium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
7 comments Page 1 of 1.

Jitu said:   8 years ago
Because cast iron is a brittle or hard material so cutting speed must be decreased otherwise friction occurs.
(1)

Balaji said:   1 decade ago
Because Cast iron is brittle.

Sikandar said:   9 years ago
It must be a mild steel.

Abhijeet said:   9 years ago
Maybe answer is Copper. Because the hss cutting speed with copper is 18-30 m/min, and if we seen the cast iron is 30-45 m/min.

Anurup said:   8 years ago
Why not brass?

Jayanta said:   8 years ago
Cast iron is the right answer.

Sohan said:   7 years ago
Harder the material & lower the speed.

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