Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

Engineering Materials

In spheroidising process, the steel is

Question: In spheroidising process, the steel is
[A].

heated below the lower critical temperature and then cooled slowly

[B].

heated upto the lower critical temperature and then cooled in still air

[C].

heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

[D].

none of the above

Answer: Option C

Explanation:

No answer description available for this question.

In spheroidising process, the steel is Read More »

Engineering Materials, Mechanical Engineering

In process annealing, the hypo-eutectoid steel is

Question: In process annealing, the hypo-eutectoid steel is
[A].

heated from 30° C to 50° C above the upper critical temperature and then cooled in still air

[B].

heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

[C].

heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace

[D].

heated below or close to the lower critical temperature and then cooled slowly

Answer: Option D

Explanation:

No answer description available for this question.

In process annealing, the hypo-eutectoid steel is Read More »

Engineering Materials, Mechanical Engineering

In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled

Question: In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled
[A].

in still air

[B].

slowly in the furnace

[C].

suddenly in a suitable cooling medium

[D].

any one of these

Answer: Option B

Explanation:

No answer description available for this question.

In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled Read More »

Engineering Materials, Mechanical Engineering

Which of the following statements are true for annealing of steels?

Question: Which of the following statements are true for annealing of steels?
[A].

Steels are heated to 500 to 700° C

[B].

Cooling is done slowly and steadily

[C].

Internal stresses are relieved

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Which of the following statements are true for annealing of steels? Read More »

Engineering Materials, Mechanical Engineering

In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.

Question: In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air. Read More »

Engineering Materials, Mechanical Engineering