Which of the following case hardening processes, result in a change in the composition of a steel component?
1. Carburizing
2. Cyaniding
3. Nitriding
4. Flame hardening
1
2, 3 and 4 only
2
1, 3 and 4 only
3
1, 2 and 3 only
4
1, 2, 3 and 4
Which of the following case hardening processes, result in a change in the composition of a steel component?
1. Carburizing
2. Cyaniding
3. Nitriding
4. Flame hardening