ABSTRACT Cutting performances of TiCN–HfC (TH) and TiCN–HfC–WC (THW) ceramic tools in dry turning hardened AISI H13 was investigated. The optimal cutting parameters – cutting speed of 110 m/min, feed rate of 0.1 mm/rev and depth of cut of 0.15 mm – were obtained by the orthogonal experiment. At the optimal cutting parameters, the tool life of TH was 82 min higher than that of THW, which indicated that TH had better wear resistance than THW. Meanwhile, the workpiece had better surface quality after turned by TH than by THW. In addition, a crescent depression formed in the rake face and a jackboot-like shape appeared in the flank. The rake face took place crater wear, while the flank took place abrasive wear, oxidation wear and adhesive wear.

中文翻译：

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TiCN-HfC 和 TiCN-HfC-WC 陶瓷刀具在干车削硬化 AISI H13 中的切削性能

摘要 研究了 TiCN-HfC (TH) 和 TiCN-HfC-WC (THW) 陶瓷刀具在干车削硬化 AISI H13 中的切削性能。通过正交试验获得了最佳切削参数——110 m/min 的切削速度、0.1 mm/rev 的进给速度和 0.15 mm 的切削深度。在最佳切削参数下，TH 的刀具寿命比 THW 高 82 min，表明 TH 的耐磨性优于 THW。同时，TH车削后的工件表面质量优于THW车削。此外，前刀面形成了新月形凹陷，侧面出现了长靴状的形状。前刀面发生月牙洼磨损，后刀面发生磨粒磨损、氧化磨损和粘着磨损。