Normalising (Leaving Cert Engineering): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
What is normalising?
What is normalising?
Heat treatment for balanced material properties
Goal of normalising
Goal of normalising
Create tough material (not too soft or hard)
Heating temp in normalising
Heating temp in normalising
Approx. 2/3 of melting temperature
Cooling method in normalising
Cooling method in normalising
Air cooling at moderately fast rate
What process occurs during normalising?
What process occurs during normalising?
Recrystallisation
Grain structure from normalising
Grain structure from normalising
Small/fine grain structure
Effect of faster cooling on grains
Effect of faster cooling on grains
Smaller grains form
Effect of smaller grains on material
Effect of smaller grains on material
Tougher material
Normalising vs annealing: heating temp
Normalising vs annealing: heating temp
Both heat to 2/3 melting point
Key difference: normalising vs annealing
Key difference: normalising vs annealing
Normalising has faster cooling rate
Purpose of soaking stage
Purpose of soaking stage
Allow heat to spread evenly throughout
Normalised vs annealed material property
Normalised vs annealed material property
Tougher vs softer