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在我国辉光离子氮化工艺应用于生产已有十几年了。同应用最普遍的气体氮化相比,辉光离子氮化具有氮化速度快、能源消耗少,氮化质量高、工件变形小等优点;但其缺点是所用设备比较复杂,操作也比较麻烦,特别是工件上的孔、槽的屏蔽问题有待于解决。根据国内有关文献介绍采用金属屏蔽的方法,即φ1～φ4毫米的孔、槽容易引起弧光放电;φ4～φ10毫米的孔、槽容易引起温度严重不均匀,造成局部温度过高,应该用钢板屏蔽,或用销子螺钉堵住。
Glow ion nitriding process in our country has been used in production for more than 10 years. Compared with the most commonly used gas nitriding, glow ion nitriding has the advantages of high nitriding speed, low energy consumption, high nitriding quality and small deformation of the workpiece. However, the disadvantage is that the equipment used is complicated and the operation is troublesome , Especially the holes in the workpiece, the shielding of the trough needs to be solved. According to the domestic literature on the use of metal shielding method, that φ1 ~ φ4 mm hole, the groove easily lead to arc discharge; φ4 ~ φ10 mm hole, the groove is easy to cause serious temperature unevenness, resulting in local temperature is too high, should be used steel shield , Or blocked with pin screws.