Structure Design and Coating Performance of ZrN Coated Cutting Tools

The residual stress model of structure design of ZrN coated cutting tools had been established, and the residual stress among ZrN coating, substrate, and interlayer had also been calculated by finite element thermal-mechanical coupling method to ensure the structure of ZrN coated tools. ZrN coated cutting tools had been manufactured using arc ion plating technique and its performance had been investigated. The factors which affect residual stress of ZrN coated tools had been analyzed. Interlayer of coating can influence the gradient between coating and substrate, and it also had been researched, finally, the distribution rule of residual stress between coating and substrate had been found out.