目前,高速钢工具表面强化的常用方法之一是低温液体碳氮共渗,而模具钢工具常用的则是氮化。莫斯科包曼高等技术学院1973年研制成功的无毒盐浴(氰酸盐)氰化是一种高效、经济、有前途的新方法。氰化时,碳、氮在工具表面同时进行扩渗,因此,渗层形成氰化物,能显著地提高疲劳强度、耐磨性、热稳定性和腐蚀疲劳抗力。苏联对高速钢(P18、P6M5、P6AM5、 At present, one of the commonly used methods for strengthening the surface of high-speed steel tools is cryogenic liquid carbonitriding, while the tool for tool steel is commonly nitrided. Moscow Bauman Institute of Technology in 1973 successfully developed non-toxic salt bath (cyanate) cyanide is an efficient, economical and promising new method. Cyanide, carbon and nitrogen in the tool surface at the same time to expand, therefore, the formation of cyanide layer, can significantly improve the fatigue strength, wear resistance, thermal stability and corrosion fatigue resistance. The Soviet Union on high-speed steel (P18, P6M5, P6AM5,