Consider these heat treatment processes for a high-grade steel file.
1. Tempering
2. Annealing
3. Hardening
4. Casting
Which of these is most suited for production of high grade steel file?
1
Only 1 and 2
2
Only 3
3
Only 1 and 3
4
Only 4
Consider these heat treatment processes for a high-grade steel file.
1. Tempering
2. Annealing
3. Hardening
4. Casting
Which of these is most suited for production of high grade steel file?