p1 metal enhancements Flashcards
1
Q
Hard and tempering
A
heating medium- or high carbon steels to give temperature
rapidly cooling via quenching and then heating to set a temp
2
Q
tempering colour
A
the colour seen on metal that indicates the temp at which brittleness is removed
3
Q
carburising
A
changes the chemical composition of the surface of low carbon steel so it absorbs carbon and increases hardness
4
Q
quenching
A
rapid cooling of heat treated metal
5
Q
case hardening
A
hardens the surface of steels with less than 0.4 per cent
6
Q
annealing
A
heating work-hardened metal and very slowly cooling it, making it easier to work
7
Q
work hardening
A
improves tensile strength and hardness in the localised area
