在车削硬化的AISI H13热加工模具钢（52 HRC）和硬化的AISI E52100轴承钢（62 HRC）时，给出了各种等级的常规陶瓷和PCBN刀具材料的刀具寿命数据。本文还详细介绍了粗加工和精加工后工件表面完整性的一些方面。这些包括表面纹理的3D映射以及微观结构和显微硬度变化的分析。结果表明，在加工热作模具钢和精加工轴承钢时，低浓度PCBN和混合氧化铝刀具的刀具寿命最长。

TOOL LIFE DATA ARE PRESENTED FOR VARIOUS GRADES OF CONVENTIONAL CERAMIC AND PCBN CUTTING TOOL MATERIALS WHEN TURNING HARDENED AISI H13 HOT WORK DIE STEEL (52 HRC) AND HARDENED AISI E52100 BEARING STEEL (62 HRC). THE PAPER ALSO DETAILS SOME ASPECTS OF WORKPIECE SURFACE INTEGRITY FOLLOWING ROUGHING AND FINISHING OPERATIONS. THESE INCLUDE 3D MAPPING OF SURFACE TEXTURE AND ANALYSIS OF MICROSTRUCTURE AND MICROHARDNESS VARIATION. THE RESULTS INDICATE THAT WHEN MACHINING THE HOT WORK DIE STEEL AND FINISHING THE BEARING STEEL, LOW CONCENTRATION PCBN AND MIXED ALUMINA TOOLING PROVIDE THE LONGEST TOOL LIVES.