Mechanical Engineering - Engineering Materials - Discussion

Discussion Forum : Engineering Materials - Section 4 (Q.No. 8)
8.
In spheroidising process, the steel is
heated below the lower critical temperature and then cooled slowly
heated upto the lower critical temperature and then cooled in still air
heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Rajat said:   6 years ago
For this process steel is heated either below the lower critical temperature or just above the lower critical temperature up to 770'C.

Which is slightly above the LCT to get the desired product then it is cooled up to 600'C so given answer is correct.

Piyush Rawat said:   6 years ago
I too agree, the answer is A.

Dhaval Chaudhary said:   7 years ago
Answer C is right. I agree with the given answer.

Aniket pisal said:   8 years ago
Spheroidizing of high carbon steel is a method of prolonged heating at a temperature below the eutectoid temperature. This answer is wrong. Correct answer is option A.

Sanjeev kumar said:   8 years ago
The Answer should be A.

Vishwajeet said:   1 decade ago
Answer should be A.

It is conducted at temperatures that are slightly below the eutectoid temperature followed by a slow cooling process. The resulting spheroidite contains sphere-like cementite particles. Is the most ductile and machinable form of steel.

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