A study of wear on coated PCBN tools when turning hardened AISI 4340 using FEM simulation

Turning hardened steels can be a very challenging task, although it has been a preferred operation, in many cases to replace grinding. PCBN tools have been a good choice especially if coating can be added to further enhance its surface physical and mechanical properties. In the present work two TiAlN and one AlCrN coatings were tested, comparing with uncoated PCBN on turning hardened AISI 4340. Tests assessed tool wear, cutting forces and …