Chapter 12 - Annealing and Normalizing

Question 1

How is the material cooled when normalizing?

Answer 1

set out to cool at room temperature.

Question 2

difference between full annealing and normalizing

Answer 2

In full annealing the metal is slowly cooled in an oven and normalizing is cooling in air temperature.

Question 3

What are some of the results of annealing and normalizing?

Answer 3

It creates a softer ad more ductile meal with less internal stress.

Question 4

List four purposes for annealing and normalizing.

Answer 4

• Easier to machine,
• easier to form,
• relieve internal stresses, - refine the crystal structure of a part.

Question 5

What effect does cold working have on the crystal shapes in steel?

Answer 5

It elongates the crystal structure.

Question 6

How long should a sample be held at the full annealing temperatures before allowing it to cool?

Answer 6

Soak at high temp at least 1hr before

Question 7

What is the advantage of process annealing over full annealing?

Answer 7

It takes less time.

Question 8

To what temperature range is steel heated for process annealing?

Answer 8

1050-1300F

Question 9

Which takes longest to cool, a part that has been normalized, full annealed, or spheroidized?

Answer 9

Full annealing

Question 10

In which process is the material heated the hottest?

Answer 10

full annealing

Question 11

After a part has been treated to a high temperature, which of the following four cooling processes would cause the part to become the softest?

Answer 11

full annealing

Question 12

After a part has been heated to a high temperature, which of the following four cooling processes would cause the part to become the strongest?

Answer 12

air quenching