The backwashof low frequency, high compressive strength, no powder, no hardening, high activity and large specific surface area, good regeneration effect.
反洗频率低，抗压强度高，不粉化、不板结，比表面积大，活性高，再生效果好。
2
Generally used in quenched and tempered state, can also carry on the carbonitriding and high-frequency surface hardening.
一般在调质状态下使用，还可以进行碳氮共渗和高频表面淬火处理。
3
Grinding hardening, the technology of hardening steel piece surface with grinding heat instead of high or medium frequency induction hardening heat, can integrate grinding surface hardening.