YT15硬质合金刀片深冷处理工艺实验研究

The Research on Process of Deep Cryogenic Treatment for YT15 Carbide Insert

采用正交试验法对YT15硬质合金车刀刀片深冷处理工艺进行了研究,分析了不同工艺参数对刀具性能的影响,并使用扫描电子显微镜(SEM)观察了深冷处理前后的刀具磨损情况。结果表明,深冷温度对刀片性能影响最大,其次是冷却速度,再次是回火温度。深冷处理促使硬质合金的粘结相Co发生了多性型马氏体转变,从而提高了刀具的硬度和耐磨性。

The paper studies the deep cryogenic treatment process of YT15 carbide insert by orthogonal experiment method,and analyses the effects of various cryogenic treatment process parameters on mechanical properties,and observes microstructure before and after deep cryogenic treatment by the SEM.The results show that the effect of soaking temperature on the properties of inserts is the first factor,the cooling rate and the tempering temperature are secondary and tertiary.Deep cryogenic treatment improves the multi-type martensite transformation of Co.Therefore deep cryogenic treatment increases hardness and enhances wear resistance of the carbide insert.