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Machinist
Machinist Set-1
Heat Treatment
18

Heat Treatment MCQ - Machinist(Set-1) with Answers

18) A approximate hardness of HSS milling cutter is

45 HRC

52 HRC

62 HRC

75 HRC

Answer is:

62 HRC

Heat Treatment MCQ - Machinist(Set-1) with Answers

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Related Heat Treatment MCQ - Machinist(Set-1) with Answers

19) The purpose of heat treatment is

To change the mechanical properties of steel

To change the internal structure of steel

To change the appearance of the component

To change the chemical properties of steel

Answer is:

To change the mechanical properties of steel

20) One component of C50 steel is heated to 830 Degree Centigrade, soaked it for some time and then quenched in oil. Again it is heated to 600 Degree Centigrade and quenched in oil. Name this process of heat treatment.

Annealing

Normalizing

Hardening and tempering

Case hardening

Answer is:

Hardening and tempering

21) Which one of the following groups of quenching media is in order of their severity of the cooling rate, i.e. from slow to rapid cooling ?

Oil, forced air, brine solution

forced air, oil, brine solution

Brine solution, oil, forced air

Forced air, brine solution, oil

Answer is:

forced air, oil, brine solution

22) Which one of the following processes is adopted to improve the internal structure of steel, which has been subjected to severe hammering ?

Hardening

Annealing

Normalizing

Tempering

Answer is:

Normalizing

Which one of the following processes is adopted to improve the internal structure of steel, which has been subjected to severe hammering ?

Heat Treatment MCQ - Machinist(Set-1) with Answers

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