1 It is not necessary to heat the whole, the deformation of the workpiece is small, and the power consumption is small.
3 The heating speed is fast, and the surface of the workpiece is oxidized and decarburized lightly.
4 Surface hardened layer can be adjusted as needed and easy to control.
5 Heating equipment can be installed on the machining production line, easy to mechanize and automate, easy to manage, and can reduce transportation, save manpower and improve production efficiency.
6 The hardened layer has a fine martensite structure and high hardness, strength and toughness.
7 After surface quenching, the surface of the workpiece has large compressive internal stress, and the workpiece has high resistance to fatigue and breakage.