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对比了分别经可控渗氮、离子注入形成TiN及可控渗氮 +离子注入Ti2 +后 ,M2高速钢零件(精冲模 )的寿命实验 .结果表明 ,采用可控渗氮 +离子注入Ti2 +的复合处理工艺 ,可使零件的使用寿命获得明显提高 .断口分析、表面硬度测试、金相分析、XRD和AES分析表明 ,寿命的提高是由于 :①用Jonsson经验公式测得的该TiN注入层的真实硬度为HV3 0 0 0 ,TiN的超高硬度是寿命提高的根本原因 .②该复合工艺可使M2高速钢表面TiN注入层获得较厚较硬的氮化过度层 ,增强了膜基间的结合力 ,从而提高了零件的抗磨损和抗冲击性能 .③渗氮层增加了钛离子的注入深度 ,获得了更宽的TiN改性层 ,用JT -PRII所得到的模拟计算结果与此吻合得很好 .
The life experiments of M2 high-speed steel parts (fine blanking die) after controlled nitriding and ion implantation to form TiN and controlled nitriding + ion implantation Ti2 + were compared.The results show that the controllable nitriding + ion implantation of Ti2 + Of the composite processing technology, can make the service life of the components can be significantly improved.Fracture analysis, surface hardness test, metallographic analysis, XRD and AES analysis show that the life expectancy is increased due to: ① measured by Jonsson empirical formula of the TiN injection layer The real hardness of HV3000, TiN superhardness is the fundamental reason for the increase of life.②The composite technology can make the TiN injection layer on the M2 high-speed steel surface to obtain thicker and harder nitrided layer, , Thereby improving the wear resistance and impact resistance of the parts.③The nitriding layer increases the implantation depth of titanium ions and obtains a wider TiN modification layer, and the simulation results obtained with JT-PRII are the same as Good agreement.