3.1 Industrial Processes - Heat Treatments Flashcards
(9 cards)
1
Q
What does heat treatment do
A
alters metals properties
2
Q
What is hardening
A
heating then quenching metal in large bath
3
Q
What temperature is steel taken to for hardening
A
cherry red colour
4
Q
What is the downside of hardening
A
increases brittleness
5
Q
What is tempering
A
reducing hardness and brittleness by heating to certain temperature and leaving to air cool
6
Q
What is case hardening
A
Hardens surface of steel while inner core of metal retains original properties
7
Q
What is the case hardening process
A
heat steel then place in carbon
repeat multiple timesd
quench to finish
8
Q
What is annealing
A
heating and slow cooling of metal to make it more ductile
9
Q
What is normalising
A
create uniform grain structure
heat material then left to cool
