To the Question of the Mechanism of the Effect of Coating on the Durability of Tools from PCBN

EasyChair Preprint no. 3049

Abstract

The paper discusses the results of the tool-life tests of PCBN cutting tool with PVD coating and the mechanism which could be accounted for declining of its wear rate. The results of research showed that in condition of finishing of hardened steel (52-54 HRC), PCBN with (TiAlSiY)N/CrN PVD coating demonstrated significantly lower wear rate parameter in comparison with a standard composite. The evidences were found of intensive plastic deformation occurring on the clearance face of the tool with protective coating caused by wear land topography peculiarities. Plastic flow-zone formed at this area can significantly reduce the abrasive effect on the tool surface and thus to increase the overall tool-life.

Keyphrases: Hard machining, PCBN, PVD coating, tool life, wear mechanism

@Booklet{EasyChair:3049,
  author = {Andrey Manokhin and Sergey Klimenko and Viacheslav Beresnev and Vadim Zakiev and Sergey Klimenko},
  title = {To the Question of the Mechanism of the Effect of Coating on the Durability of Tools from PCBN},
  howpublished = {EasyChair Preprint no. 3049},

  year = {EasyChair, 2020}}