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为提高高速钢刀具切削性能延长刀具的使用寿命,赋与刀具以高硬度耐磨性、高抗粘屑性、良好耐蚀性能等,在气体氧氮碳共渗和气体软氮化基础上,试用离子冲击扩渗法进行离子氧氮化和离子软氮化处理。试验表明,离子氧氮化处理(550℃左右、10～25分钟氨氧比在1/100～1/70)可获得高硬度的渗层(1100HV以上)和良好的硬度分布,并在其外层复以薄的氧化层,使刀具具有优良性能和高度的使刚寿命。而且使用液化石油气有着来源方便、价格低廉之特点。两种工艺处理后刀具的使用寿命都能提高约5～8倍。同时,为扩大现有离子氮化炉的应用范围开辟了广阔道路,使离子冲击设备发挥更大作用。
In order to improve the cutting performance of high-speed steel cutting tools to extend the life of the tool, given the tool with high hardness wear resistance, high anti-chip, good corrosion resistance, gas nitrocarburizing and gas nitrocarburizing on the basis, Try ion bombardment infiltration method for ionoxynitridation and ion nitrocarburizing. Experiments show that the ion nitriding treatment (about 550 ℃, 10 to 25 minutes Ammonia ratio at 1/100 ~ 1/70) can be high hardness of the infiltration layer (1100HV above) and good hardness distribution, and outside Complex with a thin layer of oxide, the tool has excellent performance and a high degree of just life. And the use of liquefied petroleum gas has a convenient source, low prices. After two kinds of processing tools can increase the service life of about 5 to 8 times. At the same time, to expand the scope of the existing ion nitriding furnace opened up a broad road to ion impact equipment play a greater role.