CAJ | 학술논문

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高速钢精冲模的使用寿命。结果表明，采用可控渗氮+离子注入Ti 2+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经验公式算得的该TiN注入层的真实硬度为HV3000，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渡层，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
대비료분별경가공삼담、리자주입형성TiN급가공삼담+리자 주입Ti2+후，M2고속강정충모적사용수명。결과표명，채용가공삼담+리자주입Ti 2+적복합처리공예，가사령건적사용수명획득명현제고。단구분석、표면경도측시、 금상분석、XRD화AES분석표명，수명적제고시유우：（1） 용Jonsson경험공식산득 적해TiN주입층적진실경도위HV3000，TiN적초고경도시수명제고적근본원인；（2 ） 해복합공예가사M2고속강표면TiN주입층획득교후교경적담화과도층，증강료막기간 적결합력，종이제고료령건적항마손화항충격성능；（3） 삼담층증가료태리자적주입심 도，획득료경관적TiN개성층，용JT-PRⅡ소득도적모의계산결과여차문합득흔호
The life experiments of W6Mo5Cr4V2 high speed st eel dies treated respectivelly by controlled nitriding、 ion implantation with T i2++N2+ and a combined technique of controlled nitriding and implant ation with Ti2+ were made. The result shows that, compared with other two techniques, the combined technique can improve the life of the dies by a large margin. Besides the ultrahigh hardness of TiN coating, the thicker and harder n itriding layer, which transited from TiN coating to substrate of M2 high speed s teel, contributes greatly to the life improvement. The transition layer not onl y strengthens the binding force between coating and substrate, but also widens the depth of implanted Ti2+ ion which leads to a thicker TiN modification layer and consists with the computer simlation result of JT-PRⅡ software de veloped by oursleves.