Compared with conventional hardening:
1. heat very quickly, expanding the scope of a transition temperature, shorten the time of change.
2. the quenched workpiece surface layer can be very thin, cryptocrystalline martensite, hardness is slightly higher (2~3HRC), less brittle and high fatigue strength.
3. the easy oxidation and decarburization process workpieces, even some artifacts can be assembled directly after use.
4. hardened layer depth, easy to control, ease of mechanisation and automation.