MD

Question 1

Heating above the transformation range, usually 1300 F to 1350 F, and cooling slowly to soften the metal and increase in machining

a. Annealing
b. Hardening
c. Normalizing
d. Tempering

Answer 1

a. Annealing

Question 2

Heating above the transformation temperature and quenching usually in oil, for the purpose of increasing the hardness:

a. Annealing
b. Hardening
c. Normalizing
d. Tempering

Answer 2

b. Hardening

Question 3

Reheating to a temperature below the transformation range, followed by any desired rate of cooling to attain the desired properties of the metal.

a. Annealing
b. Hardening
c. Tempering
d. Stress Relieving

Answer 3

c. Tempering

Question 4

Heating to a subcritical temperature, about 1,100 F to 1,300 F and holding at that temperature for a suitable time for the purpose of reducing internal residual stresses.

a. Annealing
b. Hardening
c. Tempering
d. Stress Relieving

Answer 4

d. Stress Relieving

Question 5

Heating to some 100 F above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of the metal.

a. Annealing
b. Hardening
c. Normalizing
d. Tempering

Answer 5

c. Normalizing

Question 6

A machine tool used for producing holes in metal by the use of a cutting tool called drill.

a. Drilling machine
b. Boring machine
c. Milling machine
d. Broaching machine

Answer 6

a. Drilling machine