Flashcards in Chapter 12 - Annealing and Normalizing Deck (12)
How is the material cooled when normalizing?
set out to cool at room temperature.
difference between full annealing and normalizing
In full annealing the metal is slowly cooled in an oven and normalizing is cooling in air temperature.
What are some of the results of annealing and normalizing?
It creates a softer ad more ductile meal with less internal stress.
List four purposes for annealing and normalizing.
- Easier to machine,
- easier to form,
- relieve internal stresses, - refine the crystal structure of a part.
What effect does cold working have on the crystal shapes in steel?
It elongates the crystal structure.
How long should a sample be held at the full annealing temperatures before allowing it to cool?
Soak at high temp at least 1hr before
What is the advantage of process annealing over full annealing?
It takes less time.
To what temperature range is steel heated for process annealing?
Which takes longest to cool, a part that has been normalized, full annealed, or spheroidized?
In which process is the material heated the hottest?
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?