添加和不添加含碳气体的气体氮化、离子氮化和其它氮化工艺可以提高刀具的耐磨性。但是,这些方法的缺点是价格昂贵,设备操作复杂和生产效率低。从这个观点来看,利用无毒盐—氰酸盐和碳酸盐融浴在低温下使工具钢表面渗入碳、氮的工艺过程是具有明显优点的。 Nitriding, ion nitriding and other nitriding processes with and without the addition of carbon-containing gases increase tool wear resistance. However, these methods have the disadvantages of being expensive, complicated to operate, and inefficient. From this point of view, the use of non-toxic salt - cyanate and carbonate bath at low temperatures to infiltrate the tool steel surface carbon and nitrogen process has obvious advantages.