Changes in the Working Surfaces of High-Speed Tools during the Cutting Process

The article presents results of the changes in the structurally-phase state, current of exoelectron emission, micro hardness as well as dynamic performance and thermal emf when high-speed tools wear out during the cutting process. The results obtained show that the tool wear is determined by the competing influence of the hardening process due to the plastic deformation and surface softening due to the temperature factor. The changes in the constant components of the dynamic parameters and thermal emf during wear of the high-speed tools are close to linear. They can be used as diagnostic criteria in tool wear monitoring.

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