多晶立方氮化硼（PCBN）刀具材料已被证明能成功地加工许多不同的工件材料。汽车行业凭借制造的部件数量和范围，为PCBN刀具提供了许多应用领域。本文研究了两个具体的应用领域:相对较软铸铁的加工；以及硬化部件的精车，作为某些磨削操作的可行替代方案。随着高CBN含量和低CBN含量材料的可用性，加工实例强调了选择最合适类型的PCBN刀具材料的重要性。

POLCRYSTALLINE CUBIC BORON NITRIDE (PCBN) CUTTING TOOL MATERIALS HAVE PROVED SUCCESSFUL IN MACHINING MANY DIFFERENT WORKPIECE MATERIALS. THE AUTOMOTIVE INDUSTRY, BY VIRTUE OF THE VOLUME AND RANGE OF COMPONENTS MANUFACTURED, PROVIDES MANY APPLICATION AREAS FOR PCBN CUTTING TOOLS. IN THIS PAPER, TWO SPECIFIC APPLICATION AREAS ARE EXAMINED: THE MACHINING OF RELATIVELY SOFT CAST IRON; AND THE FINISH TURNING OF HARDENED COMPONENTS AS A VIABLE ALTERNATIVE TO CERTAIN GRINDING OPERATIONS. WITH THE AVAILABILITY OF BOTH HIGH AND LOW CBN CONTENT MATERIALS, MACHINING EXAMPLES HIGHLIGHT THE IMPORTANCE OF SELECTING THE MOST SUITABLE TYPE OF PCBN CUTTING TOOL MATERIAL.